Hand-fold and workbench system

Abstract

To reduce a gap between adjacent handrails.SOLUTION: A handrail attached to a top plate 110 of a workbench 100 comprises two support members 33 along a substantially vertical direction, and a crosspiece member 37 arranged along a lateral direction at a position spaced below top ends of the two support members 33. The crosspiece member 37 is located so that the ends thereof are located outside the two strut members 33 when viewed from a direction orthogonal to the substantially vertical direction and the lateral direction.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a handrail and a workbench system.

Background Art

[0002] Conventionally, temporary handrails have been used at work sites. Patent Document 1 discloses a handrail with a cross member for a construction site having a fence body, an F-shaped frame body, a main cross member, and an auxiliary cross member, and fitting and attaching the lower ends of the left and right vertical members to a receiving tool.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] This The invention aims to To be able to absorb the force when the operator leans on it achieve something.

Means for Solving the Problems

[0005] The present invention is a handrail attached to the top plate portion of a workbench, having at least two support members along a substantially vertical direction, and a horizontal member supported by the two support members and arranged along a horizontal direction. Each of the support members has a first support portion located on the upper side and a second support portion located on the lower side, both along a substantially vertical direction. The first support portion has lower rigidity than the second support portion The support member is inclined such that, when the handrail is attached to the top plate portion and an operator leans against the handrail from the inside to the outside of the work area of the top plate portion and contacts it, the support member is located more outside the work area as it goes upward on the handrail.

Effects of the Invention

[0006] According to the present invention, Absorb the force when the operator leans on it something can be achieved.

Brief Description of the Drawings

[0007]

Figure 1A

Figure 1B

Figure 1C

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0008] Hereinafter, the handrail and the workbench system according to the present embodiment will be described with reference to the drawings. (First Embodiment) FIG. 1A is a plan view showing an example of the configuration of the workbench system 10. FIG. 1B is a front view of the configuration of the workbench system 10 as viewed from the front side. FIG. 1C is a side view of the configuration of the workbench system 10 as viewed from the left side. FIG. 2 is a perspective view of a part of the workbench system 10 as viewed from the left side. FIG. 3 is a perspective view of a part of the workbench system 10 as viewed from the front side. For ease of explanation, in each figure, the front side is shown as Fr, the rear side as Rr, the right side as R, and the left side as L as necessary. Note that the front-rear direction and the left-right direction are substantially orthogonal.

[0009] The workbench system 10 is composed of multiple types of component materials such as a predetermined number of workbenches 100, a predetermined number of bridge trolleys 200, a predetermined number of bridges 300, a handrail part 30, a ladder part 60, etc. By connecting a predetermined number of workbenches 100, a predetermined number of bridge trolleys 200, and a predetermined number of bridges 300, a wide work plane in a substantially rectangular shape is formed where workers can perform work at heights. The workbench system 10 of this embodiment has, as specific quantities for forming a substantially rectangular work plane, 9 workbenches 100 (100a to 100i), 6 (6 sheets) bridge trolleys 200 (200a to 200f), and 30 sheets of bridges 300. The work plane of this embodiment has a length in the front-rear direction of, for example, 7700 mm to 7900 mm and a length in the left-right direction of, for example, 5000 mm to 6100 mm. Such a size of the work plane is such that when the work site is a building, the work plane can fit within the column spacing on the floor.

[0010] Note that the 9 workbenches 100a to 100i each have the same configuration, and when there is no need to distinguish them, they will simply be referred to as workbench 100 hereinafter. Also, the 6 bridge trolleys 200a to 200f each have the same configuration, and when there is no need to distinguish them, they will simply be referred to as bridge trolley 200 hereinafter. Also, the 30 sheets of bridges 300 each have the same configuration.

[0011] Specifically, the workbench system 10 is composed of three row units 20a to 20c along the front-rear direction, which are composed of workbenches 100 and bridge trolleys 200. These row units 20a to 20c are the reference in constructing the workbench system 10. The three row units 20a to 20c are each arranged in the order of workbench 100, bridge trolley 200, workbench 100, bridge trolley 200, workbench 100 from the rear side to the front side. In this embodiment, in plan view, the workbench 100 and the bridge trolley 200 are substantially the same size and are in a substantially rectangular shape where the front-rear direction (longitudinal direction) is longer than the left-right direction (lateral direction). More specifically, for the workbench 100 and the bridge trolley 200, the ratio of the length in the front-rear direction to the length in the left-right direction is approximately 3:2.

[0012] Further, the workbench system 10 is configured by bridging a plurality of bridges 300 without gaps between three column units 20a to 20c arranged in parallel at intervals in the left - right direction. In this embodiment, in a plan view, the bridge 300 has a substantially rectangular shape in which the front - rear direction (short - side direction) is shorter than the left - right direction (long - side direction). More specifically, the ratio of the length in the front - rear direction to the length in the left - right direction of the bridge 300 is approximately 1:3. Also, the length in the front - rear direction of the workbench 100 and the bridge carriage 200 is substantially the same as the length in the left - right direction of the bridge 300, and the ratio of the length in the front - rear direction of the workbench 100 and the bridge carriage 200 to the length in the front - rear direction of the bridge 300 is approximately 3:1. Therefore, three bridges 300 can be bridged between the workbenches 100 arranged apart, and three bridges 300 can be bridged between the bridge carriages 200 arranged apart. As a result, 15 bridges 300 are arranged between the column unit 20a and the column unit 20b, and 15 bridges 300 are arranged between the column unit 20b and the column unit 20c.

[0013] The handrail part 30 is attachable and detachable, and is attached along the outer peripheral edge of the work plane to surround the outer peripheral edge of the work plane. When a part of the operator's body contacts the handrail part 30 while the operator is working on the work plane, the operator can recognize that it is the edge of the work plane. The handrail part 30 has a plurality of handrails. The handrail part 30 of this embodiment has a long - side handrail 31 and a short - side handrail 32, and has 13 long - side handrails 31 and 7 short - side handrails 32 as specific quantities surrounding the outer peripheral edge of the work plane.

[0014] The long - side handrail 31 has a length substantially the same as the length in the long - side direction of the workbench 100, the bridge carriage 200, and the bridge 300 in a plan view. The long - side handrail 31 is attached to the longitudinal - side ends of the workbench 100, the bridge carriage 200, and the bridge 300 located on the outer periphery of the work plane. However, in the workbench 100c shown in FIG. 1A, a short - side handrail 32 is attached instead of the long - side handrail 31 in order to attach the ladder part 60 to the longitudinal - side end. Further, the short-side handrail 32 has a length substantially the same as the length in the short-side direction of the workbench 100 and the bridge carriage 200 in a plan view. The short-side handrail 32 is attached to the short-side end of each of the workbench 100 and the bridge carriage 200 located on the outer periphery of the work plane.

[0015] The ladder portion 60 is attached to the outer peripheral edge of the work plane so that an operator can move up and down between the work plane and the floor surface. The workbench system 10 of the present embodiment has one ladder portion 60 as a specific quantity. The ladder portion 60 has a length moderately shorter than the length in the short-side direction of the workbench 100 and the bridge 300 in a plan view. The ladder portion 60 is attached to the longitudinal-side end or the short-side end of the workbench 100, the bridge carriage 200, or the bridge 300 located on the outer periphery of the work plane.

[0016] Next, the configuration of the workbench 100 will be described with reference to FIG. 4. FIG. 4 is a plan view, a front view, and a side view showing an example of the configuration of the workbench 100. The workbench 100 has a top plate portion 110, leg portions 130, a rotating portion 150, and a traveling portion 180. The top plate portion 110 serves as a footing for an operator performing high-place work. The top plate portion 110 is substantially rectangular in a plan view and is long in the front-rear direction. In the present embodiment, the length of the top plate portion 110 in the front-rear direction (longitudinal direction) is, for example, approximately 1550 mm, and the length in the left-right direction (short-side direction) is, for example, approximately 1010 mm. Further, the top plate portion 110 is at a height of, for example, approximately 1000 mm to approximately 1500 mm from the floor surface. Note that the lengths in the front-rear direction and the left-right direction of the top plate portion 110 may be substantially equal.

[0017] The top plate portion 110 has a plurality of anti-slip protrusions on the surface that serves as the working surface. Also, the top plate portion 110 has a connecting bar 114 at a position close to the outer peripheral edge. Further, the top plate portion 110 has a plurality of connecting holes 118 at a position close to the outer peripheral edge. The connecting holes 118 are respectively located at the longitudinal end (the first end) and the transverse end (the second end) of the top plate portion 110. For example, six connecting holes 118 are formed at the longitudinal end and four connecting holes 118 are formed at the transverse end. The connecting holes 118 are holes for connecting with the connecting pin 221 of the bridge carriage 200, the connecting pin 321 of the bridge 300, or the connecting bar 114 of another workbench 100 when another workbench 100 is directly adjacent. Also, the top plate portion 110 has a plurality of handrail holes 125 for attaching the handrail portion 30 at a position close to the outer peripheral edge. The handrail holes 125 are respectively located at the longitudinal end (the first end) and the transverse end (the second end) of the top plate portion 110. For example, six handrail holes 125 are formed at the longitudinal end and two handrail holes 125 are formed at the transverse end. In FIG. 4, only two handrail holes 125 for attaching the longitudinal handrail 31 are shown at the longitudinal end of the top plate portion 110. Here, the pitch of the two handrail holes 125 at the transverse end is different from the pitch of the two handrail holes 125 at the longitudinal end.

[0018] The leg portion 130 serves to support the load of the top plate portion 110 and the load of the operator working on the top plate portion 110. Also, the leg portion 130 is connected below the top plate portion 110 and is rotatable with respect to the top plate portion 110. By rotating the leg portion 130, the leg portion 130 is folded so as to overlap the top plate portion 110. Specifically, the leg portion 130 has four leg members 131a to 131d. In FIG. 4, the leg member 131b is not shown because it is hidden by the leg members 131a and 131d. The leg members 131a to 131d respectively extend from positions close to the four corners of the top plate portion 110 toward the floor surface.

[0019] Further, between the leg members 131a and 131b, and between the leg members 131c and 131d, a horizontal cross member 137 is horizontally spanned along the horizontal direction. By horizontally spanning the cross member 137 between the leg members 131a and 131b, and between the leg members 131c and 131d, the leg members 131a and 131b are configured as one unit, that is, the first leg body, and the leg members 131c and 131d are configured as one unit, that is, the second leg body. Therefore, when the leg 130 rotates with respect to the top plate portion 110, the leg members 131a and 131b rotate integrally, and the leg members 131c and 131d rotate integrally. Note that the leg members 131a and 131b, and the leg members 131c and 131d can be telescopically extended and retracted stepwise in the height direction.

[0020] Also, in the open-leg posture of the workbench 100 of the present embodiment, the legs 130 do not extend completely vertically, but are inclined with respect to the vertical direction in order to improve stability. That is, when the workbench 100 is viewed along the left-right direction, the pair of leg bodies are inclined so as to separate from each other as they go from the upper end to the lower end.

[0021] The rotating portion 150 plays a role of rotating the leg 130 with respect to the top plate portion 110. By rotating the leg 130 with respect to the top plate portion 110 via the rotating portion 150, the leg 130 changes between an open-leg posture in which it extends downward and a closed-leg posture in which the leg 130 overlaps the top plate portion 110 and is folded. Specifically, the rotating portion 150 has four rotating bodies 151a to 151d. In FIG. 4, the rotating bodies 151b and 151d are not shown because they are hidden by the rotating bodies 151a and 151c, respectively. The rotating bodies 151a to 151d are respectively disposed between the leg members 131a to 131d and the top plate portion 110. Here, the rotation fulcrum P1 of the rotating bodies 151a and 151b is offset upward, that is, toward the top plate portion 110 side, from the rotation fulcrum P2 of the rotating bodies 151c and 151d.

[0022] The traveling unit 180 is responsible for moving the workbench 100 to an arbitrary position while supporting the top plate portion 110 and the leg portion 130. The traveling unit 180 is connected to the lower side of the leg portion 130. Specifically, the traveling unit 180 has four casters 181a to 181d. In FIG. 4, the caster 181b is not shown because it is hidden by the casters 181a and 181d. The casters 181a to 181d are rotatably connected to the lower ends of the leg members 131a to 131d, respectively. Further, the casters 181a to 181d are casters with stoppers that can fix the rotation of the wheels according to the operation of the operator. When the operator performs high-altitude work, the operator can safely perform high-altitude work without the workbench 100 moving by operating the pedals of the casters 181a to 181d of the traveling unit 180 to fix the rotation of the wheels.

[0023] Next, the configuration of the bridge carriage 200 will be described with reference to FIG. 5. FIG. 5 is a plan view, a front view, and a side view showing an example of the configuration of the bridge carriage 200. The bridge carriage 200 is bridged over the top plate portion 110 of the workbench 100 arranged apart in the front-rear direction. Further, the bridge carriage 200 not only serves as a scaffold for simply performing high-altitude work but also functions as a transport carriage capable of loading the constituent members of the workbench system 10. The bridge carriage 200 corresponds to an example of the first bridge.

[0024] The bridge carriage 200 has a main body portion 210 and a traveling unit 230. The main body portion 210 serves as a scaffold for workers performing high-altitude work. Also, when the bridge carriage 200 functions as a transport carriage, the main body portion 210 serves as a loading portion when loading the workbench 100. In plan view, the main body portion 210 is substantially rectangular and long in the front-rear direction. In this embodiment, the length of the main body portion 210 in the front-rear direction (longitudinal direction) is, for example, approximately 1550 mm, and the length in the left-right direction (lateral direction) is, for example, approximately 1010 mm. The size of the main body portion 210 of the bridge carriage 200 is substantially the same as the size of the top plate portion 110 of the workbench 100. However, the size of the main body portion 210 and the size of the top plate portion 110 are not limited to being substantially the same. Also, the lengths of the main body portion 210 in the front-rear direction and the left-right direction may be substantially equal.

[0025] The main body portion 210 has a plurality of protrusions for anti-slip on the surface that serves as the working surface. Also, the main body portion 210 has a plurality of connection holes 218 at positions close to the outer peripheral edge. The connection holes 218 are formed, for example, at six positions at the longitudinal end. The connection holes 218 are holes for connecting with the connection pins 321 of the bridge 300. Also, the main body portion 210 has a plurality of handrail holes 225 for attaching the handrail portion 30 at a position close to the outer peripheral edge and at the longitudinal end. The handrail holes 225 are formed, for example, at six positions at the longitudinal end. In FIG. 5, only two handrail holes 225 for attaching the longitudinal handrail 31 at the longitudinal end of the main body portion 210 are shown. Here, the pitch of the two handrail holes 225 at the longitudinal end shown in FIG. 5 is substantially the same as the pitch of the two handrail holes 125 at the longitudinal end shown in FIG. 4. In addition, the main body 210 has connecting pins 221 at the ends on the short side that is connected to the workbench 100. Specifically, the connecting pins 221 are provided at both ends of each of the ends on the short side (front end and rear end). The connecting pins 221 are attached to plate-shaped brackets 222 that extend forward and backward from the ends on the short side (front end and rear end) of the main body 210. The connecting pins 221 protrude downward from the lower surface of the brackets 222. By inserting the connecting pins 221 into the connecting holes 118 of the workbench 100 from above, the bridge carriage 200 and the workbench 100 are connected. Here, the connecting pins 221 and the brackets 222 correspond to an example of a connecting portion.

[0026] When the traveling unit 230 functions as a carrier truck for the bridge carriage 200, it plays a role of traveling on the floor surface while supporting the loads of the main body 210 and the cargo. The traveling unit 230 is located below the main body 210 and has a plurality (four) of casters 231a to 231d arranged at the four corners. In FIG. 5, the caster 231b is not shown because it is hidden by the casters 231a and 231d. The casters 231a to 231d are attached to the lower side of the main body 210. The casters 231a to 231d are rotatable about the axis of the swivel axis O along the vertical direction. In FIG. 5, the wheels 233 are facing in the front-rear direction, but by rotating the wheels 233 about the axis of the swivel axis O, the bridge carriage 200 can travel in any direction including the front, rear, left, and right, not limited to the front side.

[0027] The casters 231a to 231d are casters with brakes that can be braked or the brakes can be released according to the operation of the operator. Specifically, the casters 231a to 231d have a wheel 233, a fork member 234 as a support portion, and a brake pedal 235. The fork member 234 rotatably supports the wheel 233. The brake pedal 235 is swingable in the vertical direction with respect to the fork member 234. The brake pedal 235 has an operation portion 236 at the tip for stepping on with the foot. When the operator operates to step on the operation portion 236 downward during braking, the outer peripheral surface of the wheel 233 is pressed, and the wheel 233 is braked. Note that when the operator further steps on the operation portion 236, the wheel 233 is held in a braked state.

[0028] Note that FIG. 5 shows a state where the brake is not applied (the state when the brake is released). As shown in FIG. 5, for the casters 231a and 231b that are on the rear side when the bridge carriage 200 is traveling, the operation portion 236 of the brake pedal 235 is located and exposed behind the rear end of the main body portion 210. Further, the operation portion 236 is positioned so as not to overlap the connecting pin 221 and the bracket 222 in a plan view when the brake is released and the wheel 233 is oriented in the front-rear direction. Therefore, when the operator needs to apply the brake, the operator can easily step on the operation portion 236 without being interfered with by the connecting pin 221 and the bracket 222.

[0029] Next, the configuration of the bridge 300 will be described with reference to FIG. 6. FIG. 6 is a plan view, a front view, and a side view showing an example of the configuration of the bridge 300. The bridge 300 is bridged over the top plate portion 110 of the workbench 100 arranged apart in the left-right direction. Further, the bridge 300 is bridged over the main body portion 210 of the bridge carriage 200 arranged apart in the left-right direction. The bridge 300 corresponds to an example of a second bridge.

[0030] The bridge 300 has a main body portion 310. The main body part 310 serves as a foothold for workers performing high-altitude work. The main body part 310 is substantially rectangular in a plan view and is long in the left-right direction. In this embodiment, the length of the main body part 310 in the front-rear direction (the short side direction) is, for example, approximately 500 mm, and the length in the left-right direction (the short side direction) is, for example, approximately 1530 mm. Note that the lengths of the main body part 310 in the front-rear direction and the left-right direction may be substantially equal.

[0031] The main body part 310 has a plurality of protrusions for anti-slip on the surface that serves as the working surface. Further, the main body part 310 has a plurality of handrail holes 325 for attaching the handrail part 30 at positions close to the outer peripheral edge and at the longitudinal end portions. For example, six handrail holes 325 are formed at the longitudinal end portions. Note that in FIG. 6, only two handrail holes 325 for attaching the longitudinal handrail 31 at the longitudinal end portion of the main body part 310 are shown. Here, the pitch of the two handrail holes 325 at the longitudinal end portion shown in FIG. 6 is substantially the same as the pitch of the two handrail holes 225 at the longitudinal end portion shown in FIG. 5 and the pitch of the two handrail holes 125 at the longitudinal end portion shown in FIG. 4.

[0032] Also, the main body part 310 has connecting pins 321 at the short side end portions on the side connected to the workbench 100 or the bridge carriage 200. Specifically, the connecting pins 321 are provided at both ends of each of the short side end portions (the right end portion and the left end portion). The connecting pins 321 are attached to plate-shaped brackets 322 that extend from the short side end portions (the right end portion and the left end portion) of the main body part 310 toward the right side and the left side, respectively. The connecting pins 321 protrude downward from the lower surface of the brackets 322. By inserting the connecting pins 321 into the connecting holes 118 of the workbench 100 or the connecting holes 218 of the bridge carriage 200 from above, the main body part 310 is connected to the workbench 100 or the bridge carriage 200. Here, the connecting pins 321 and the brackets 322 correspond to an example of the connecting portion.

[0033] Next, the configuration of the handrail portion 30 will be described with reference to FIGS. 7 and 8. Since the longitudinal handrail 31 and the lateral handrail 32 have substantially the same configuration except for the length, the longitudinal handrail 31 will be mainly described. Further, hereinafter, the case where the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100 will be mainly described, but the case where it is attached to the main body portion 210 of the bridge carriage 200 or the main body portion 310 of the bridge 300 is the same. FIGS. 7(a) to 7(c) are a plan view, a front view, and a side view of the longitudinal handrail 31. Note that FIG. 7(b) is a view of the longitudinal handrail 31 as seen from the work area. The work area is a space above the work plane and overlapping the work plane in a plan view. FIG. 8 is an exploded perspective view of the longitudinal handrail 31.

[0034] The longitudinal handrail 31 has two support members 33, an upper cross member 36, a middle cross member 37, a sill member 38, two support members 43, two abutting members 50, and two insertion pins 55. The upper cross member 36 corresponds to an example of the second horizontal member. The middle cross member 37 corresponds to an example of the first horizontal member. The sill member 38 corresponds to an example of the third horizontal member.

[0035] The support member 33 supports the upper cross member 36, the middle cross member 37, and the sill member 38. The support member 33 is substantially rod-shaped and extends linearly along the substantially vertical direction. In the present embodiment, the length of the support member 33 is, for example, approximately 1000 mm. Further, when the longitudinal handrail 31 is attached to the top plate portion 110, the height from the surface of the top plate portion 110 to the upper end of the support member 33 is, for example, approximately 800 mm to approximately 1000 mm. The support member 33 has a first support portion 34 that supports the upper cross member 36 and the middle cross member 37, and a second support portion 35 that supports the sill member 38. The first support portion 34 and the second support portion 35 are fixed so as to be along the substantially vertical direction. In the present embodiment, the length of the first support portion 34 is longer than the length of the second support portion 34.

[0036] The first support column portion 34 and the second support column portion 35 are, for example, substantially rectangular in cross-section and hollow. Here, the first support column portion 34 and the second support column portion 35 are made of different materials, and a material that is more easily bent than the second support column portion 35 is used for the first support column portion 34. Also, the first support column portion 34 has lower rigidity than the second support column portion 35. Specifically, the first support column portion 34 is made of, for example, synthetic resin, and the second support column portion 35 is made of, for example, an aluminum alloy. The second support column portion 35 is fixed by screws, rivets (including blind rivets), etc. in a state where its outer periphery is fitted into the first support column portion 34. However, the support column member 33 may be constituted by a single member. In this case, the support column member 33 can be made of a material that is more easily bent than the top plate portion 110, for example, synthetic resin. Also, a plurality (two) of the support column members 33 are arranged at intervals. Also, a resin protection cap is attached to the upper end of the support column member 33.

[0037] The upper crossbar member 36 is supported by two support column members 33 spaced apart. The upper crossbar member 36 is substantially rod-shaped and extends linearly along the lateral direction (substantially horizontal direction). The length of the upper crossbar member 36 is substantially equal to the length of the top plate portion 110 in the longitudinal direction. The upper crossbar member 36 is, for example, substantially rectangular in cross-section and hollow or solid. Here, the upper crossbar member 36 is made of the same material as the first support column portion 34, for example, synthetic resin. However, the upper crossbar member 36 may be made of a material that is less easily bent than the first support column portion 34, for example, an aluminum alloy. Also, the upper crossbar member 36 is fixed to the upper end portion of the first support column portion 34 of the support column member 33. Also, resin protection caps are attached to both ends of the upper crossbar member 36, respectively.

[0038] The middle cross member 37 is supported by two spaced-apart support members 33. The middle cross member 37 is substantially rod-shaped and extends linearly along the lateral direction (substantially horizontal direction). The middle cross member 37 has a length substantially equal to the longitudinal length of the top plate portion 110. That is, the lengths of the middle cross member 37 and the upper cross member 36 are substantially equal. The middle cross member 37 has, for example, a substantially rectangular cross-section that is hollow or solid. Here, the middle cross member 37 is made of the same material as the first support portion 34, for example, made of synthetic resin. However, the middle cross member 37 may be made of a material that is less likely to bend than the first support portion 34, for example, made of an aluminum alloy. Also, the middle cross member 37 is fixed at a position below the upper end portion of the support member 33. The middle cross member 37 is below the upper cross member 36 and above the sill member 38. Also, resin protection caps are attached to both ends of the middle cross member 37, respectively.

[0039] The upper cross member 36 and the middle cross member 37 are fixed to the support members 33 in a state of intersecting the two support members 33. Also, as shown in FIG. 7(b), when viewed from a direction substantially orthogonal to the vertical direction and the lateral direction, both ends of the upper cross member 36 and the middle cross member 37 are located outside the two support members 33. That is, the ends of the upper cross member 36 and the middle cross member 37 do not locate between the two support members 33, but project beyond the support members 33 in the lateral direction. In the present embodiment, the protruding amounts L of the upper cross member 36 and the middle cross member 37 from the support member 33 are substantially the same, for example, substantially 100 mm to substantially 300 mm. Also, as shown in FIG. 8, the upper cross member 36 and the middle cross member 37 are fixed with screws, rivets, etc. using the attachment member 40 in a state of being in contact with the side surface 34a of the first support portion 34 facing the inside of the work area.

[0040] The mounting member 40 has a substantially hat shape in plan view, and includes a substantially U-shaped covering portion 41 that covers three side surfaces of the column member 33 from the outside of the work area, and a flange portion 42 that contacts the upper crosspiece member 36 and the middle crosspiece member 37. The mounting member 40 is made of, for example, an aluminum alloy or iron. Holes for inserting screws, rivets, etc. are formed in the covering portion 41 and the flange portion 42, respectively. The upper crosspiece member 36 and the middle crosspiece member 37 are fixed to the column member 33 by the mounting member 40.

[0041] The sill member 38 is substantially rod-shaped and extends linearly along the lateral direction (substantially horizontal direction). The length of the sill member 38 is substantially equal to the distance between the two column members 33. That is, the sill member 38 is fixed so as to span between the two column members 33. The sill member 38 has, for example, a substantially rectangular cross-section that is hollow or solid, and is made of an aluminum alloy. Also, the sill member 38 is fixed at a position below the middle crosspiece member 37 and above the lower end of the column member 33.

[0042] The sill member 38 is fixed to the second column portion 35 of the two column members 33. Specifically, as shown in FIG. 8, the sill member 38 is fixed with screws, rivets, etc. using the support member 43 and the L-shaped member 48 while being in contact with the opposing side surfaces 35a of the second column portions 35 of the two spaced column members 33.

[0043] The support member 43 supports the load of the entire longitudinal handrail 31 when the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100. The support member 43 corresponds to an example of an attachment portion. The support member 43 is located below the lower portion of the support column member 33. The support member 43 is in the shape of a plate bent at a substantially right angle and has a support portion 44 extending in a substantially horizontal direction and a standing portion 45 extending in a substantially vertical direction and contacting the support column member 33 and the crosspiece member 38. The support member 43 is made of, for example, an aluminum alloy or iron. When the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100, the support portion 44 supports the load of the entire longitudinal handrail 31 by being placed on the surface of the top plate portion 110 and transmits the load of the longitudinal handrail 31 to the top plate portion 110. Further, two insertion holes 46a and 46b for inserting the insertion pin 55 are formed apart from each other in the support portion 44. Here, the insertion holes 46a and 46b are long oblong holes along the longitudinal direction of the upper cross member 36 and the middle cross member 37. Further, a plurality of holes through which screws, rivets, etc. for connecting both the support column member 33 and the crosspiece member 38 are inserted are formed in the standing portion 45. Note that the insertion hole 46a is a hole that communicates with the handrail hole 125 formed at the longitudinal end portion of the top plate portion 110 when the longitudinal handrail 31 is attached to the longitudinal end portion of the top plate portion 110. On the other hand, the insertion hole 46b is a hole that communicates with the handrail hole 125 formed at the short-side end portion of the top plate portion 110 when the short handrail 32 is attached to the short-side end portion of the top plate portion 110. In this way, by forming the insertion holes 46a and 46b for attaching the longitudinal handrail 31 and the short handrail 32 to the support portion 44 of the support member 43, the support member 43 can be used for both the longitudinal handrail 31 and the short handrail 32, and the standardization of parts can be achieved.

[0044] The L-shaped member 48 is in the shape of a substantially L-shaped plate and is made of, for example, an aluminum alloy or iron. A plurality of holes through which screws, rivets, etc. for connecting both the support column member 33 and the crosspiece member 38 are inserted are formed in the L-shaped member 48. The crosspiece member 38 is fixed to the two support column members 33 by the support member 43 and the L-shaped member 48.

[0045] When the contact member 50 abuts against the top plate portion 110 of the workbench 100 from below when the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100. The contact member 50 corresponds to an example of the attachment portion. The contact member 50 is located at the lower end portion of the support member 33. The contact member 50 has two fixing portions 51 fixed to the side surface of the lower end portion of the support member 33, an extending portion 52 extending substantially horizontally from the fixing portion 51, and a contact portion 53 located at the tip of the extending portion 52. The contact member 50 is made of, for example, an aluminum alloy or iron. The two fixing portions 51 are fixed to the lower end portion of the support member 33 by screws, rivets, etc. in such a manner as to sandwich the second support portion 35 of the support member 33 from both sides. The extending portion 52 extends horizontally from the fixing portion 51 and then extends obliquely upward so as to reach inside the top plate portion 110 without interfering with the end portion of the top plate portion 110 when the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100. The contact portion 53 is located at the tip of the extending portion 52 and abuts against the top plate portion 110 from below inside the top plate portion 110 when the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100.

[0046] The insertion pin 55 is a pin inserted into the insertion holes 46a and 46b of the support portion 44 of the support member 43. The insertion pin 55 is connected to the support member 33 by, for example, a string-like member so as not to come off.

[0047] Next, a method for assembling the workbench system 10 described above will be explained. First, an operator assembles three column units 20a to 20c along the front-rear direction as a reference. Specifically, with the longitudinal directions of the workbenches 100a to 100c, the workbenches 100d to 100f, and the workbenches 100g to 100i being in the front-rear direction, they are arranged at regular intervals in the front-rear direction (one direction).

[0048] Next, the operator bridges the bridge carriage 200 between the top plate portions 110 of the workbenches 100 spaced apart from each other in the front and rear directions. That is, the bridge carriages 200a, 200c, 200e are bridged between the workbenches 100a, 100d, 100g and the workbenches 100b, 100e, 100h, and the bridge carriages 200b, 200d, 200f are bridged between the workbenches 100b, 100e, 100h and the workbenches 100c, 100f, 100i. Specifically, the connecting pins 221 of the main body portion 210 of the bridge carriage 200 are respectively inserted into the connecting holes 118 of the workbench 100. Accordingly, the bridge carriage 200 is connected to the workbench 100. At this time, a space is formed between the traveling portion 230 of the bridge carriage 200, that is, the casters 231a to 231d and the floor surface.

[0049] Next, the operator bridges a plurality of bridges 300 between the three row units 20a to 20c arranged at regular intervals in the left - right direction (or other direction). That is, the bridge 300 is bridged between the workbenches 100a, 100b, 100c and the workbenches 100d, 100e, 100f, and the bridge 300 is bridged between the workbenches 100d, 100e, 100f and the workbenches 100g, 100h, 100i. Also, the bridge 300 is bridged between the bridge carriages 200a, 200b and the bridge carriages 200c, 200d, and the bridge 300 is bridged between the bridge carriages 200c, 200d and the bridge carriages 200e, 200f. Specifically, the connecting pins 321 of the main body portion 310 of the bridge 300 are respectively inserted into the connecting holes 118 of the workbench 100 or the connecting holes 218 of the bridge carriage 200. Accordingly, the bridge 300 is connected to the adjacent workbench 100 and the bridge carriage 200. By connecting the workbench 100, the bridge carriage 200, and the bridge 300 in this way, a working plane for the operator to perform work at heights is formed. At this time, a space is formed between the bridge 300 and the floor surface. Here, since 15 bridges 300 are arranged in the front - rear direction, a long space along the front - rear direction is formed between the 15 bridges 300 and the floor surface, and this long space can be used as a space for accommodating temporary equipment and materials.

[0050] Next, the operator attaches the handrail portion 30 to the outer peripheral edge of the work plane. Specifically, the longitudinal handrail 31 is attached to the left end portions of the workbench 100a, the bridge carriage 200a, the workbench 100b, the bridge carriage 200b, the left end portion of the workbench 100g, the bridge carriage 200e, the workbench 100h, the bridge carriage 200f, and the right end portion of the workbench 100i. Also, the longitudinal handrail 31 is attached to the front end portion of the bridge 300 located on the front side of the work plane and the rear end portion of the bridge 300 located on the rear side of the work plane. Further, the transverse handrail 32 is attached to the rear end portions of the workbenches 100a, 100d, 100g, the front end portions of the workbenches 100c, 100f, 100i, and the left end portion of the workbench 100c.

[0051] Here, the case where the longitudinal handrail 31 is attached to the top plate portion 110 of the workbench 100 will be described with reference to FIGS. 9 and 10. FIG. 9 is a perspective view showing a case where the longitudinal handrail 31 is attached to the left end portion, which is the longitudinal end portion of the workbench 100a, and the transverse handrail 32 is attached to the rear end portion, which is the transverse end portion of the workbench 100a. FIG. 10 is a cross-sectional view taken by cutting along the I-I line in a substantially vertical direction and viewed from the arrow direction with the longitudinal handrail 31 attached to the left end portion, which is the longitudinal end portion of the workbench 100a in FIG. 9.

[0052] To attach the longitudinal handle 31 to the top plate portion 110, the operator brings the longitudinal handle 31 closer to the top plate portion 110 in a state where the lower side of the longitudinal handle 31 is inclined so as to approach the top plate portion 110. Next, after inserting and hooking the tip of the contact member 50 into the rib 126 (see FIG. 10) formed at the lower part of the top plate portion 110, the operator rotates the longitudinal handle 31 so as to raise it around the tip of the contact member 50. When the support column member 33 of the longitudinal handle 31 is substantially in the vertical direction, the support portion 44 of the support member 43 is placed on the surface of the top plate portion 110. At this time, the insertion hole 46a of the support portion 44 and the handle hole 125 communicate with each other. Then, the operator can attach the longitudinal handle 31 to the top plate portion 110 by inserting the insertion pin 55 into the insertion hole 46a and the handle hole 125. Since the insertion hole 46a of the support portion 44 is an elongated hole, even if the longitudinal handle 31 is slightly displaced along the outer peripheral edge of the top plate portion 110, the insertion hole 46a of the support portion 44 and the handle hole 125 can be made to communicate with each other. Here, the case of attaching the longitudinal handle 31 to the top plate portion 110 of the workbench 100 has been described, but the same applies when attaching the longitudinal handle 31 or the short handle 32 to the top plate portion 110 of the workbench 100, the main body portion 210 of the bridge carriage 200, or the main body portion 310 of the bridge 300.

[0053] Next, the operator attaches the ladder portion 60 to the outer peripheral edge of the work plane. Specifically, the ladder portion 60 is attached to the left end of the workbench 100c. Note that the position where the ladder portion 60 is attached can be changed as appropriate, and the attachment position of the short handle 32 can be changed according to the attachment position of the ladder portion 60.

[0054] In the workbench system 10 assembled in this way, since the handle portion 30 can surround the work plane, the operator can safely perform high-altitude work. Here, in the longitudinal handrail 31 and the lateral handrail 32 of the present embodiment, when viewed from the work area, both ends of the upper rail member 36 and the middle rail member 37 are located outside the two support members 33. That is, instead of being located between the two support members 33, both ends of the upper rail member 36 and the middle rail member 37 protrude beyond the support members 33 in the lateral direction. Therefore, the ends of the upper rail member 36 and the middle rail member 37 can be brought close to the ends of the adjacent longitudinal handrail 31 or the adjacent lateral handrail 32, so that the gap between adjacent handrails can be reduced.

[0055] In the state where the handrail portion 30 is attached, as shown by the two-dot chain line in FIG. 8, the ends of the upper rail member 36 and the middle rail member 37 of the adjacent longitudinal handrail 31 or lateral handrail 32 face each other at substantially the same height, so that the gap between the ends can be reduced. In this way, by being able to reduce the gap, when the operator is working on the work plane, a part of the operator's body is likely to come into contact with the upper rail member 36 and the middle rail member 37. It should be noted that it is preferable that, when viewed from the work area, both ends of the upper rail member 36 and the middle rail member 37 of the longitudinal handrail 31 and the lateral handrail 32 are located outside the two support members 43 or the two support members 33.

[0056] Also, as shown in FIG. 10, in the longitudinal handrail 31 and the lateral handrail 32 of the present embodiment, the upper rail member 36 and the middle rail member 37 are located closer to the inside of the work area of the workbench 100 than the two support members 33. Specifically, the support member 33 and the top plate portion 110 do not substantially overlap in the vertical direction, but the upper rail member 36 and the middle rail member 37 and the top plate portion 110 substantially overlap in the vertical direction. Therefore, a part of the operator's body is likely to come into contact with the upper rail member 36 or the middle rail member 37, so that when the operator is working near the end of the work plane, the operator can recognize that it is the end of the work plane at an early stage. On the other hand, the ledger member 38 is located closer to the outside of the working area of the workbench 100 than the upper cross member 36 and the middle cross member 37. Specifically, as shown in FIG. 8, the ledger member 38 is located between the two support members 33. Therefore, it is possible to suppress the surface of the top plate portion 110 of the workbench 100 from being covered by the ledger member 38, and a wide working plane of the top plate portion 110 can be secured.

[0057] Further, at least a part of the support member 33, for example, more than half of the length, is made of a material that is easily bendable. Therefore, when an operator contacts and leans on the longitudinal handrail 31 and the lateral handrail 32 from the inside to the outside of the working area, the support member 33 bends, causing the longitudinal handrail 31 and the lateral handrail 32 to incline toward the outside of the working area. That is, the longitudinal handrail 31 and the lateral handrail 32 incline so that they are located more toward the outside of the working area as they go upward. In this way, by bending the support member 33 to incline the longitudinal handrail 31 and the lateral handrail 32, the support member 33 absorbs the force when leaning. Therefore, it is possible to suppress the force when leaning from being transmitted from the support member 33 to the top plate portion 110 of the workbench 100, the main body portion 210 of the bridge carriage 200, or the main body portion 310 of the bridge 300, and prevent the workbench 100 or the like from tipping over. In addition, since the upper cross member 36 and the middle cross member 37 are made of a material that is easily bendable, the upper cross member 36 and the middle cross member 37 can similarly absorb the force when an operator leans on them.

[0058] Further, the support member 33 has a lower rigidity in the first support portion 34 located on the upper side than in the second support portion 35 located on the lower side. In other words, the support member 33 has a higher rigidity in the second support portion 35 located on the lower side than in the first support portion 34 located on the upper side. By increasing the rigidity of the lower side in this way, it is possible to prevent the support member 33 from breaking when it bends. Note that the first support portion 34 and the second support portion 35 are not limited to changing the rigidity or the ease of bending by the material, and may be changed by the shape.

[0059] Incidentally, in the present embodiment, before assembling the workbench system 10, when storing the constituent members of the workbench system 10 in a warehouse or the like, they can be stored in a state where they are loaded on the bridge carriage 200. It is preferable to distribute and load different types of constituent members on each of the bridge carriages 200a to 200f so that they are easy for an operator to handle. By storing the constituent members of the workbench system 10 on the bridge carriage 200 in this way, since the bridge carriage 200 functions as a transport carriage, it can be easily shipped out of the warehouse. Also, even when changing the storage location of the workbench system 10 in the warehouse, the storage location can be easily changed.

[0060] As described above, the present invention has been described with reference to the above-described embodiments. However, the present invention is not limited to only the above-described embodiments, and modifications and the like are possible within the scope of the present invention. In the above-described embodiment, the case where the longitudinal handrail 31 and the lateral handrail 32 have two support members 33 has been described. However, the present invention is not limited to this case, and they may have three or more support members 33. In this case, the upper cross member 36 and the middle cross member 37 can be configured to be located outside the two outermost support members 33 among the three or more support members 33 at both ends. Also, in the above-described embodiment, the case where the handrail portion 30 has two types of handrails, i.e., the longitudinal handrail 31 and the lateral handrail 32, has been described. However, the present invention is not limited to this case, and it may have one type of handrail, or may have three or more types of handrails.

[0061] Also, in the above-described embodiment, the case where the longitudinal handrail 31 and the lateral handrail 32 have one middle cross member 37 has been described. However, the present invention is not limited to this case, and they may have two or more middle cross members. Also, in the above-described embodiment, the case where three bridges 300 are connected to one longitudinal end of the workbench 100 or the bridge carriage 200 has been described. However, the present invention is not limited to this case. For example, instead of the bridges 300, one bridge formed by combining three juxtaposed bridges 300 may be used.

[0062] In addition, in the workbench system 10 described above, the case of forming a substantially rectangular work plane has been described. However, for example, when there is a column at the work site, a part of the bridge 300 can be removed, and the column can be inserted through the removed position to prevent interference with the column. In addition, in the above-described bridge carriage 200, the case of having the traveling unit 230 has been described. However, the present invention is not limited to this case, and a simple bridge without the traveling unit 230 or a workbench 100 may be used. When the bridge carriage 200 is used as the workbench 100, the workbenches 100 are adjacent to each other.

[0063] In addition, in the present embodiment, the case where the end portion of the middle cross member 37 is located outside the two support members 33 when viewed from a direction substantially perpendicular to the vertical direction and the horizontal direction has been described. However, the present invention is not limited to this case, and it can be appropriately changed according to problems and the like.

Explanation of Reference Numerals

[0064] 10: Workbench system 30: Handrail portion 33: Support member 36: Upper cross member 37: Middle cross member 38: Skirting member 43: Support member 50: Contact member 100(100a~100i): Workbench 110: Top plate portion 130: Leg portion 200(200a~200d): Bridge carriage 210: Main body portion 300: Bridge 310: Main body portion

Claims

1. A handrail attached to the top plate of a workbench, having at least two support members extending substantially in the vertical direction, and a horizontal member supported by the two support members and arranged along the horizontal direction. The support member has a first support portion located on the upper side and a second support portion located on the lower side, each extending substantially in the vertical direction. The first support portion has lower rigidity than the second support portion. The support member is inclined such that when an operator leans against the handrail from the inside to the outside of the work area on the top plate with the handrail attached to the top plate, the upper side of the handrail is located further outside the work area.

2. A handrail attached to the top plate of a workbench, having at least two support members extending substantially in the vertical direction, and a horizontal member supported by the two support members and arranged along the horizontal direction. The support member has a first support portion located on the upper side and a second support portion located on the lower side, each extending substantially in the vertical direction. The first support portion is made of a material different from that of the second support portion and is more flexible than the second support portion. The support member is inclined such that when an operator leans against the handrail from the inside to the outside of the work area on the top plate with the handrail attached to the top plate, the upper side of the handrail is located further outside the work area.

3. The support member is inclined by bending such that when an operator leans against the handrail from the inside to the outside of the work area on the top plate, the upper side of the handrail is located further outside the work area, as claimed in claim 1 or 2.

4. The first support portion is made of synthetic resin, as claimed in any one of claims 1 to 3.

5. The horizontal member is supported by the first support portion, as claimed in any one of claims 1 to 4.

6. The horizontal member is made of a material different from that of the second support portion and is more flexible than the second support portion, as claimed in any one of claims 1 to 5.

7. The horizontal member is made of synthetic resin, as claimed in any one of claims 1 to 6.

8. A workbench system having a foot portion and a top plate portion, and a handrail attached to the top plate portion, wherein the handrail has at least two support members extending substantially in the vertical direction, and a horizontal member supported by the two support members and arranged along the horizontal direction, and each of the support members has a first support portion located on the upper side and a second support portion located on the lower side, both extending substantially in the vertical direction, and the first support portion has lower rigidity than the second support portion, and each of the support members is inclined such that, when the handrail is attached to the top plate portion and an operator leans against the handrail from the inside to the outside of the working area of the top plate portion and makes contact, the upper side of the handrail is located further outside the working area. A workbench system characterized by this. **Claim 9** A workbench system having a foot portion and a top plate portion, and a handrail attached to the top plate portion, wherein the handrail has at least two support members extending substantially in the vertical direction, and a horizontal member supported by the two support members and arranged along the horizontal direction, and each of the support members has a first support portion located on the upper side and a second support portion located on the lower side, both extending substantially in the vertical direction, and the first support portion is made of a material different from that of the second support portion and is a material that is more easily bent than the second support portion, and each of the support members is inclined such that, when the handrail is attached to the top plate portion and an operator leans against the handrail from the inside to the outside of the working area of the top plate portion and makes contact, the upper side of the handrail is located further outside the working area. A workbench system characterized by this.

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