JP6851883B2 - Folding workbench - Google Patents

Description

The present invention is configured so that a workbench in a folded state can be suitably installed for transportation and storage in a workbench in which the legs are stored under the top plate and folded so as to be in a closed leg posture. Regarding folding workbench.

Conventionally, legs are provided at both ends in the girder direction of the top plate, and the posture is between the open leg posture in which the legs are held downward from the top plate and the closed leg posture stored under the top plate. Folding worktables that can be freely changed are known.

Regarding such folding of the leg body, the applicant applies the folding work in which one leg body is in the closed leg posture and the other leg body is placed in the closed leg posture by overlapping the lower side of the leg body. A stand is proposed (Patent Document 1).

JP-A-2002-339564

When the work table proposed in Patent Document 1 is installed on the floor with the legs folded for transportation and storage, the lower leg in the closed leg posture is placed in contact with the floor surface. Therefore, there is a risk that the metal legs made of aluminum or the like will be damaged.

In addition, when stacking multiple workbenches in a folded state for transportation and storage, etc., the legs in the closed leg posture of the upper workbench should be placed on the top plate of the lower workbench. However, at that time, the legs of the upper workbench are not placed in a well-balanced contact with the top plate of the lower workbench, and there is a problem that the laminated state is unstable and easily collapses. .. Moreover, in this case as well, the top plate and the legs that come into contact with each other may be damaged.

Further, during transportation or the like, the legs in the closed leg posture under the top plate of the folded workbench cause rattling, which causes problems such as noise.

The present invention provides a folding workbench that solves the above problems.

Therefore, where the present invention is configured as a means, the first leg body and the second leg body provided with the grounding shoe at the tip portion are interposed at both ends in the girder direction of the top plate via the first pivot axis and the second pivot axis, respectively. It is a folding work table that is rotatably pivotally connected and the posture can be freely changed between the open leg posture in which both legs are held downward from the top plate and the closed leg posture stored under the top plate. The first leg body that rotates about the first pivot axis and the second leg body that rotates about the second pivot axis are of the first leg body in a state where the first leg body is in the closed leg posture. In the configuration in which the second leg is placed on the lower side and the second leg is in the closed leg posture, the second leg is provided with an auxiliary shoe at the base end portion separated from the tip portion provided with the grounding shoe, and the second leg body is provided. The grounding shoe and the auxiliary shoe are configured to form a seating surface that is a downward surface when the legs are closed, and both seating surfaces are arranged along a plane M2 that is substantially parallel to the plane M1 of the top plate. The ground shoe is provided with a holding means for holding the first leg body in a closed leg posture .

In the embodiment of the present invention, the turning radius R1 of the first leg centered on the first pivot axis and the turning radius R2 of the second leg centering on the second pivot axis are formed in R1 <R2. By doing so, the first leg is in the closed leg posture, and the second leg is placed on the lower side of the first leg in the closed leg posture.

The holding means provided on the grounding shoe of the second leg preferably holds the lower surface and the side surface of the first leg, and at this time, the holding means is elastically contacted with the lower surface and the side surface of the first leg. It is preferably formed of an elastic material.

Two workbenches with the first leg and the second leg in the open leg posture are arranged between the top plates of both workbenches with their second legs facing each other with a gap from each other. In the configuration in which the extension top plate is erected, it is preferable that the auxiliary shoe is provided with locking means facing the lower surface and the side surface of the extension top plate so as to be lockable.

According to the present invention, the second leg 3B located on the lower side of the workbench 1 is a top plate 2 in a state where the workbench 1 is folded by setting the first leg 3A and the second leg 3B in a closed leg posture. Since the seat surface 18 of the ground shoe 6 and the seat surface 21 of the auxiliary shoe 20 can be placed along the plane M2 substantially parallel to the plane M1, the workbench 1 in the folded state is installed on the horizontal floor surface. When this is done, by placing the seat surfaces 18 and 21 on the floor surface, it is possible to prevent the second leg body 3B from directly contacting the floor surface, and a plurality of operations in the folded state. When stacking the pedestals 1, the seating surfaces 18 and 21 of the second pedestal 3B on the upper workbench 1 are placed on the top plate 2 of the lower workbench 1 so that the second pedestal 3B is stacked. And the top plate 2 can be prevented from coming into contact with each other. Moreover, at that time, since the top plate 2 of the workbench 1 to be sequentially laminated is laminated while holding a horizontal plane parallel to the floor surface, it is preferably prevented from collapsing due to lateral displacement movement.

At this time, if the holding means 19 is formed by the grounding shoe 6, the holding means 19 of the grounding shoe 6 provided on the second leg 3B which is in the closed leg posture from the lower side in the folded state of the workbench 1 Since it is possible to hold the lower surface and the side surface of the second leg body 3A which is in the closed leg posture on the upper side. The first leg 3A does not rattle or the like during transportation or the like.

Moreover, in the folded workbench 1, the seat surface 21 of the auxiliary shoe 20 of the second leg body 3B and the seat surface of the grounding shoe 6 are stably installed on the floor surface, and the first leg body 3A is placed on the seat surface. Since the top plate 2 is supported in a horizontal state via the top plate 2, it can be used as a stepping stone with the floor height of the top plate 2 set to LH.

Further, if the locking means 22 is formed, the auxiliary shoe 20 engages with the lower surface and the side surface of the extension top plate 23 when the extension top plate 23 is erected between the two workbenches 1 and 1. By stopping, it becomes possible to preferably support in the locked state.

The folding workbench according to one embodiment of the present invention is shown, (A) is a perspective view in a state of being in an open leg posture, and (B) is a perspective view in a state of being in a closed leg posture. It is a perspective view which shows the folding mechanism of the 1st leg body. It is a perspective view which shows the folding mechanism of the 2nd leg body. (A) is a perspective view of the ground shoe, and (B) is a perspective view of the auxiliary shoe. It is a front view which shows the action which changes the leg body from an open leg posture to a closed leg posture. Regarding the folded state in which the legs are in the closed leg posture, (A) is a front view showing the whole, and (B) is a perspective view showing the action of the holding means provided on the ground shoe. An example of the case where the extension top plate is erected on two workbenches is shown. (A) is a front view showing a state in which the extension top plate is erected, and (B) and (C) are both ends of the extension top plate. It is sectional drawing which shows the connection mechanism provided in the part. It is a perspective view which shows the state in which the extension top plate is locked with the locking part of the auxiliary shoe with respect to the action of the auxiliary shoe.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, the workbench 1 is provided with a rectangular top plate 2, with the X direction in the drawing as the girder direction and the Y direction as the wife direction, and the first leg 3A and the second leg at both ends in the girder direction. The body 3B is provided. When the top plate 2 is rectangular, the girder direction is preferably the girder direction in the X direction in the longitudinal direction, but when it is substantially square as shown in the figure, any direction is X. It may be the girder direction of the direction. The top plate 2 is provided with side surface members 2b on both side portions extending in the girder direction of the floor material 2a, and end face members 2c are provided on both side portions extending in the end direction.

Both the first leg 3A and the second leg 3B are provided with a pair of column bases 5 and 5 connected by a tread 4, and a ground shoe 6 is provided at the tip of each column base 5. When the column bases 5 and 5 include the telescopic legs 5a and 5a as shown in the figure, the grounding shoe 6 is provided at the tip of the telescopic legs 5a.

The first leg 3A and the second leg 3B are provided with folding mechanisms 7A and 7B between both ends of the top plate 2 in the girder direction and the upper end of the column base 5, respectively, and are held downward from the top plate 2. The posture can be freely changed between the open leg posture (FIG. 1 (A)) and the closed leg posture (FIG. 1 (B)) stored under the top plate 2.

(1st leg)
As shown in FIG. 2, the folding mechanism 7A of the first leg 3A includes a support bracket 8A fixed to the side member 2b of the top plate 2 and a pivot bracket fixed to the upper end side surface of the column base 5. 9A is rotatably connected by the first pivot 10A, whereby the first leg 3A is configured to rotate around the first pivot 10A between the open leg posture and the closed leg posture. A lock mechanism 11A for non-rotatably locking both brackets 8A and 9A is provided in the open leg posture and the closed leg posture.

The lock mechanism 11A includes a rod 12 extending from the lower side of the top plate 2 through the support bracket 8A, and the tip portion 12a of the rod 12 is selected as the open leg lock hole 13a and the closed leg lock hole 13b of the pivot bracket 9A. It is configured to be inserted as a target. The rod 12 is provided with an operation portion 12b that can be operated from the lower side of the top plate 2, and is urged by a spring 14 in a direction in which the tip portion 12a is inserted into the hole.

Therefore, when the operator moves the rod 12 against the spring 14 in the direction of the arrow shown in the drawing via the operation unit 12b, the lock is released, and as described above, the pivot bracket 9A is moved together with the first leg 3A. It can be rotated around one pivot 10A.

Therefore, when the first leg 3A is in the open leg posture by rotating around the first pivot 10A, the open leg lock hole 13a faces the tip portion 12a of the rod 12, and is attached by the spring 14. The tip portion 12a of the urged rod 12 is inserted into the open leg lock hole 13a to maintain the open leg posture. On the contrary, when the first leg body 3A is in the closed leg posture, the closed leg lock hole 13b faces the tip end portion 12a of the rod 12, so that the tip end portion 12a of the rod 12 urged by the spring 14 is the closed leg lock hole 13b. It is inserted into and keeps the closed leg posture.

(2nd leg)
As shown in FIG. 3, the folding mechanism 7B of the second leg 3B includes a support bracket 8B fixed to the side member 2b of the top plate 2 and a pivot bracket fixed to the upper end side surface of the column base 5. 9B is rotatably connected by the second pivot 10B, whereby the second leg 3B is configured to rotate around the second pivot 10B between the open leg posture and the closed leg posture. A lock mechanism 11B is provided to lock both brackets 8B and 9B so as not to rotate in the open leg posture and the closed leg posture.

Since the lock mechanism 11B has the same configuration as the lock mechanism 11A provided for the first leg body 3A described above, duplicate description will be omitted by indicating the same reference numerals. Similarly to the above, when the operator moves the rod 12 against the spring 14 in the direction of the arrow shown in the drawing via the operation unit 12b, the lock is released and the pivot bracket 9B is moved to the second pivot along with the second leg 3B. It can be rotated around 10B. When the second leg 3B is in the open leg posture, the tip portion 12a of the rod 12 is inserted into the open leg lock hole 13a to maintain the open leg posture, and when the second leg 3B is in the closed leg posture, The tip portion 12a of the rod 12 is inserted into the closed leg lock hole 13b to maintain the closed leg posture.

(Ground shoe)
The grounding shoe 6 attached to the column base 5 of the second leg 3B will be described with reference to FIGS. 3 and 4 (A). The ground contact shoes 6 attached to the column base 5 of the second leg body 3B located on the opposite side of the column base 5 in the figure are formed symmetrically with each other. Hereinafter, the outside of the column base 5 in the X direction in the girder direction will be described as X1, the inside will be described as X2, the outside of the column base 5 in the Y direction in the wife direction will be described as Y1, and the inside will be described as Y2.

As shown in FIGS. 3 and 4A, the grounding shoe 6 has a bottomed box-shaped insertion portion 15 into which the tip end portion of the column base 5 is inserted, and the grounding shoe 6 directed from the insertion portion 15 in the Y2 direction. An extension portion 16 is provided, and the tip portion of the column base 5 is inserted into the insertion portion 15 and is fixed by a fixing tool such as a bolt. Regarding the grounding shoe 6 mounted on the column base 5 of the second leg 3B shown in FIG. 3, (a) in FIG. 4 (A) is a perspective view seen from the X1 side, and (b) is a perspective view seen from the opposite X2 side. The perspective view is shown. As shown in the figure, the insertion portion 15 and the extension portion 16 form a ground contact surface 17 that is grounded to the floor surface by forming a bottom surface when the legs are in the open leg posture, and the side surface on the X1 side is formed. As shown in FIG. 6, when the second leg body 3B is folded in the closed leg posture, it faces downward to form a seat surface 18 to be placed on the floor surface.

In the embodiment of the example, the grounding shoes 6 and 6 of the present invention configured symmetrically with respect to the column bases 5 and 5 of the second leg 3B are mounted, and the grounding shoes of the present invention are the same common parts. 6 and 6 are also attached to the column bases 5 and 5 of the first leg body 3A. However, known ground shoes other than those of the present invention may be attached to the column bases 5 and 5 of the first leg body 3A.

The extension portion 16 of the ground contact shoe 6 forms a thick support wall 16b on the X1 side and a thin holding wall 16c on the X2 side separated via a recess 16a, and is formed by a bottom wall 16d constituting the ground contact surface 17. Both walls 16b and 16c are connected.

The attachment portion 15 of the grounding shoe 6 is provided with a holding protrusion 15a protruding from the holding wall 16c on the X2 side, and forms a recess 15b that recesses the surface of the holding protrusion 15a.

(Holding means)
When the first leg body 3A and the second leg body 3B are folded in the closed leg posture, the ground contact shoe 6 attached to the column base 5 of the second leg body 3B has a first holding protrusion 15a and a holding wall 16c. The holding means 19 for holding the column base 5 of the 1-leg body 3A is configured. As shown in FIG. 6, the column base 5 (indicated by 5A) of the first leg 3A that was first in the closed leg posture is compared with the column base 5 (5B) of the second leg 3B that was subsequently in the closed leg posture. (Indicated by) is stacked from the lower side and holds the column base 5A with the holding means 19 of the ground shoe 6 facing upward. At this time, the holding wall 16c holds the lower surface of the column base 5A, and the holding projection 15a holds the outer surface of the column base 5A, thereby holding the column base 5A so as not to cause rattling in the vertical and horizontal directions.

The grounding shoe 6 is preferably integrally formed of an elastic material such as rubber, whereby the holding wall 16c is elastically contacted with the lower surface of the column base 5A, and the holding projection 15a is the outer surface of the column base 5A. The column base 5A can be elastically held by the holding means 19.

(Auxiliary shoe)
As shown in FIGS. 3 and 4B, an auxiliary shoe 20 is provided at the base end portion (upper end portion in the drawing) of the column base 5 of the second leg body 3B. The auxiliary shoe 20 includes a substrate portion 20a extending in the vertical direction while being overlapped with the surface of the column base 5 on the X1 side, and a refracting portion 20b extending in the Y2 direction from the lower portion of the substrate portion 20a. The tongue piece portion 20c extending in the X2 direction from the side edge of the substrate portion 20a on the Y1 side is provided, and the side surface of the column base 5 on the X1 side and the side surface on the Y1 side are provided by the refraction portion 20b and the tongue piece portion 20c. It is fixed by a fixing tool such as a bolt while holding the.

As shown in FIG. 6, the surfaces of the substrate portion 20a and the refracting portion 20b on the X1 side are oriented downward when the second leg body 3B is folded in the closed leg posture, so that the seat is placed on the floor surface. The surface 21 is formed.

The auxiliary shoe 20 constitutes a locking means 22 by a lateral edge portion 22a of the upper edge portion of the refraction portion 20b and a vertical edge portion 22b of the side edge portion on the Y2 side of the substrate portion 20a, which will be described later. When the extension top plate 23 is provided as described above, as shown in FIG. 8, the lower surface of the side surface member 23b of the extension top plate 23 faces the lateral edge portion 22a so as to be locked, and the side surface of the side surface member 23b faces the lateral edge portion 22a. It is configured to face the vertical edge portion 22b so as to be lockable.

(Action)
As shown in FIG. 1A, the workbench 1 is used by holding the first leg 3A and the second leg 3B downward from the top plate 2 in an open leg posture, whereby the operator Can work at heights by boarding the top plate 2. When the workbench 1 is used for transportation and storage without using it, as shown in FIG. 1 (B), the first leg 3A and the second leg 3B are placed in a closed leg posture in which the first leg 3A and the second leg 3B are stored under the top plate 2. By doing so, it can be folded compactly, and a plurality of workbenches 1 can be stacked one above the other.

For folding, as shown in FIG. 5, first, the first leg 3A is rotated around the first pivot 10A to take a closed leg posture, and then the second leg 3B is moved around the second pivot 10B. The legs are closed so that they can be overlapped on the lower side of the first leg 3A by rotating.

In order to enable such a stacked closed leg posture, the turning radius R1 of the first leg body 3A centered on the first pivot axis 10A and the second leg body 3B centered on the second pivot axis 10B. The turning radius R2 is formed so that R1 <R2. That is, the first pivot 10A of the pivot bracket 8A is provided at a position that shortens the separation distance (R1) from the first leg 3A, and the second pivot 10B of the pivot bracket 8B is from the second leg 3B. It is provided at a position where the separation distance (R2) of the above is lengthened. In the case of the illustrated embodiment, the second pivot 10B is further provided at a position lower than the first pivot 10A as shown by the height H, whereby the difference in turning radius (R2-R1) is increased. Even if it is relatively small, it is possible to rotate the second leg 3B so that the second leg 3B is placed on the lower side of the first leg 3A in the closed leg posture so as to be in a substantially horizontal closed leg posture.

As shown in FIG. 6A, the second leg 3B located on the lower side in the state where the work table 1 is folded by setting the first leg 3A and the second leg 3B in the closed leg posture is shown. With respect to the plane M1 of the top plate 2, the seat surface 18 of the grounding shoe 6 and the seat surface 21 of the auxiliary shoe 20 are aligned with the plane M2 substantially parallel to the plane M1. Therefore, when the folded work table 1 is installed on a horizontal floor surface, the seat surfaces 18 and 21 are placed on the floor surface, so that the second leg body 3B made of metal such as aluminum is placed on the floor surface. It is possible to prevent contact with each other, and the top plate 2 is installed along a horizontal plane parallel to the floor surface. Therefore, when a plurality of workbenches 1 in a folded state are laminated, the seat surfaces 18 and 21 of the second leg body 3B on the upper workbench 1 are suitably mounted on the top plate 2 of the lower workbench 1. The second leg 3B made of metal such as aluminum and the top plate 2 are preferably prevented from coming into contact with each other, and the top plate 2 of the workbench 1 which is sequentially laminated forms a horizontal plane parallel to the floor surface. Since it is laminated while being held, there is no risk of it collapsing due to lateral slip movement.

In the state where the workbench 1 is folded, as shown in FIG. 6B, the ground contact shoe 6 on the lower second leg 3B is provided with the pillar base 5 on the upper second leg 3A by the holding means 19. It preferably holds the lower surface and the side surface of the. Therefore, the monopod 3A does not rattle or the like during transportation or the like.

Further, as shown in FIG. 6, the folded workbench 1 has the seat surface 21 of the auxiliary shoe 20 of the second leg 3B and the seat surface of the grounding shoe 6 stably installed on the floor surface. Since the top plate 2 is supported in a horizontal state via the first leg body 3A, it can be used as a stepping stone with the floor height of the top plate 2 as LH. At this time, the top plate 2 is located directly above the auxiliary shoe 20 of the second leg 3B and is supported by the pivot bracket 9B, and is located directly above the grounding shoe 6 of the second leg 3B by the holding means 19. Since it is supported by the held first leg body 3A and the pivot bracket 9A, it can withstand a load firmly.

(Extension top plate)
When working at a high place by arranging two workbenches 1 and 1 in an open leg posture side by side, as shown in FIG. 7, an extended ceiling is provided between the top plates 2 of the two workbenches 1 and 1. By erection of the plate 23, the area of the work floor is expanded.

The extension top plate 23 is provided as conforming to the standard of the top plate 2 of the workbench 1. Side members 23b are provided on both side portions extending in the girder direction of the floor material 23a, and the end face member 23c in the end direction is in the girder direction. A protruding polymer plate 23d is extended.

When connecting the extension top plate 23 to the workbench 1, as shown in FIGS. 7B and 7C, the tip of the overlapping plate 23d of the extension top plate 23 is overlapped with the top plate 2 of the workbench 1 and faces downward. Pin 24 is inserted into and locked in the vertical hole 25 of the top plate 2, and the tip of a rod 27 slidably provided under the floor material 23a of the extension top plate 23 via a spring 26 is used as an end face member. By inserting and locking from 23c, the tip end portion of the rod is inserted and locked in the lateral hole 28 provided in the end face member 2c of the workbench 1.

In the workbench 1 of the present invention, when the extension top plate 23 is erected, the two workbenches 1 and 1 are arranged so that their second legs 3B face each other with a gap from each other, and in that state. , The extension top plate 23 is connected by the above method.

Since the second leg bodies 3B of the two workbenches 1 and 1 facing each other are provided with auxiliary shoes 20, as shown in FIG. 8, the locking means 22 of the auxiliary shoes 20 is an extension top plate. The lower surface and the side surface of the side surface member 23b of the 23 can be locked. That is, the lateral edge portion 22a constituting the locking means 22 is faced to the lower surface of the side surface member 23b so as to be able to be locked, and the vertical edge portion 22b is faced to the outer surface of the side surface member 23b so as to be lockable.

Therefore, downward deformation due to the load of the extension top plate 23 is prevented by locking the lateral edge portion 22a, and the lateral (Y direction) misalignment of the extension top plate 23 is affected by the vertical edge portion 22b. It is prevented by stopping.

In the case of the illustrated embodiment, the locking means 22 formed by the auxiliary shoe 20 is configured to face the lower surface and the side surface of the side surface member 23b of the extension top plate 23 so as to be able to be locked, but is extended to the workbench 1. The top plate 23 may be connected to the lower surface and the side surface of the side surface member 23b so as to be abutted and locked.

Further, although the illustrated configuration shows an embodiment in which the auxiliary shoe 20 is provided on the second leg 3B, a similar auxiliary shoe 20 may be provided on the first leg 3A.

1 Workbench 2 Top plate 2a Floor material 2b Side member 2c End face member 3A 1st leg 3B 2nd leg 4 Step rail 5 Pillar base 5a Telescopic leg 6 Ground shoe 7A, 7B Folding mechanism 8A, 8B Support bracket 9A, 9B Plywood bracket 10A 1st pivot 10B 2nd pivot 11A, 11B Lock mechanism 12 Rod 12a Tip 12b Operation part 13a Open leg lock hole 13b Closed leg lock hole 14 Spring 15 Insertion part 15a Holding protrusion 15b Recess 16 Extension 16a Recess 16b Support wall 16c Holding wall 16d Bottom wall 17 Grounding surface 18 Seating surface 19 Holding means 20 Auxiliary shoe 20a Board part 20b Refracting part 20c Tongue piece part 21 Seating surface 22 Locking means 22a Horizontal edge part 22b Vertical edge part 23 Extended ceiling Plate 23a Floor material 23b Side member 23c End surface member 23d Laminated plate 24 Pin 25 Vertical hole 26 Spring 27 Rod 28 Horizontal hole

Claims (4)

The first leg (3A) and the second leg (3B) provided with a grounding shoe at the tip are the first pivot (10A) and the second pivot (10B) at both ends in the girder direction of the top plate (2), respectively. A folding workbench that is rotatably pivoted via the top plate and allows the posture to be changed between the open leg posture in which both legs are held downward from the top plate and the closed leg posture stored under the top plate. And
The first leg (3A) that rotates around the first pivot (10A) and the second leg (3B) that rotates around the second pivot (10B) close the first leg. In the configuration in which the second leg is in the closed leg posture by overlapping the lower side of the first leg in the posture.
The second leg body (3B) is provided with an auxiliary shoe (20) at a base end portion separated from the tip portion provided with the ground contact shoe (6).
The ground contact shoe (6) and the auxiliary shoe (20) of the second leg body (3B) form seat surfaces (18) and (21) that are downward surfaces when the legs are closed, and both seat surfaces (18). ) (21) is configured to be arranged along a plane M2 substantially parallel to the plane M1 of the top plate.
The grounding shoe (6) is a folding workbench provided with a holding means (19) for holding the first leg body (3A) in a closed leg posture. By forming the turning radius R1 of the first leg centered on the first pivot axis and the turning radius R2 of the second leg body centered on the second pivot axis in R1 <R2, the first leg The folding work table according to claim 1, wherein the folding work table is configured such that the second leg is in the closed leg posture while being overlapped on the lower side of the first leg in the closed leg posture. It said retaining means (19), workbench folding according to claim 1 or 2, characterized in that formed by forming an elastic member for holding the lower surface and the side surface of the first leg. Two workbenches (1) and (1) with the first leg (3A) and the second leg (3B) in the open leg posture are opposed to each other with their second legs (3B) at intervals. In the configuration in which the extension top plate (23) is erected between the top plates of both workbenches in the state of being arranged so as to be
The folding according to claim 1, 2 or 3 , wherein the auxiliary shoe (20) is provided with locking means (22) so as to be able to be locked on the lower surface and the side surface of the extension top plate (23). Workbench.

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