Hand rail 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 work platform system. [Background technology]

[0002] Temporary handrails have traditionally been used at work sites. Patent Document 1 discloses a handrail with baseboard for use at construction sites, which has a fence body, an F-shaped frame body, a main baseboard, and an auxiliary baseboard, and is attached by fitting the lower ends of the left and right vertical shaft members into receiving fixtures. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-119291 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when multiple handrails disclosed in Patent Document 1 are arranged side by side, a gap occurs between the vertical shaft of one adjacent handrail and the vertical shaft of the other handrail, resulting in a large gap between the adjacent handrails. The present invention has been made in consideration of the above-mentioned problems, and has an object to reduce the gap between adjacent handrails. [Means for solving the problem]

[0005] The present invention is a handrail attached to the top plate of a workbench, comprising two support members aligned in a generally vertical direction and a first horizontal member arranged in a horizontal direction at a position spaced below the upper ends of the two support members, the first horizontal member having an end positioned outside the two support members when viewed from a direction perpendicular to the generally vertical direction and the horizontal direction. [Effects of the Invention]

[0006] According to the present invention, the gap between adjacent handrails can be reduced. [Brief explanation of the drawings]

[0007] [Figure 1A] FIG. 1 is a plan view showing an example of the configuration of a workbench system. [Figure 1B] FIG. 1 is a front view showing an example of the configuration of a workbench system. [Figure 1C] FIG. 1 is a side view showing an example of the configuration of a workbench system. [Figure 2] FIG. 1 is a perspective view showing an example of the configuration of a workbench system. [Figure 3] FIG. 1 is a perspective view showing an example of the configuration of a workbench system. [Figure 4] FIG. 2 is a diagram illustrating an example of the configuration of a workbench. [Figure 5] FIG. 2 is a diagram illustrating an example of the configuration of a bridge carriage. [Figure 6] FIG. 10 illustrates an example of a bridge configuration. [Figure 7] FIG. 10 is a diagram showing an example of the configuration of a longitudinal handrail. [Figure 8] FIG. 1 is a perspective view showing an example of the configuration of a longitudinal handrail. [Figure 9] FIG. 10 is a diagram for explaining a method for attaching a long handrail and a short handrail. [Figure 10] FIG. 2 is a cross-sectional view showing an example of the configuration of a longitudinal handrail and a top plate portion. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, the handrail and work platform system according to this embodiment will be described with reference to the drawings. (First embodiment) FIG. 1A is a plan view showing an example of the configuration of workbench system 10. FIG. 1B is a front view of the configuration of workbench system 10 as seen from the front side. FIG. 1C is a side view of the configuration of workbench system 10 as seen from the left side. FIG. 2 is a perspective view of a part of workbench system 10 as seen from the left side. FIG. 3 is a perspective view of a part of workbench system 10 as seen from the front side. For ease of explanation, in each figure, the front side is indicated as Fr, the rear side as Rr, the right side as R, and the left side as L, as necessary. The front-to-back direction and the left-to-right direction are approximately perpendicular to each other.

[0009] The work platform system 10 is made up of multiple types of components such as a predetermined number of work platforms 100, a predetermined number of bridge carts 200, a predetermined number of bridges 300, handrail sections 30, and ladder sections 60. By connecting a predetermined number of work platforms 100, a predetermined number of bridge carts 200, and a predetermined number of bridges 300, a large, approximately rectangular work plane is formed on which workers can work at heights. The workbench system 10 of this embodiment has nine workbenches 100 (100a-100i), six (six) bridge carts 200 (200a-200f), and 30 bridges 300, which are specific quantities that form a roughly rectangular work plane. The work plane of this embodiment has a length in the front-to-rear direction of, for example, 7700 mm to 7900 mm, and a length in the left-to-right direction of, for example, 5000 mm to 6100 mm. The size of such a work plane is such that it can fit between pillars located on the floor if the work site is a building.

[0010] The nine work platforms 100a to 100i each have the same configuration, and when there is no need to distinguish between them, they will be simply referred to as work platform 100 below. The six bridge carriages 200a to 200f each have the same configuration, and when there is no need to distinguish between them, they will be simply referred to as bridge carriage 200 below. The 30 bridges 300 each have the same configuration.

[0011] Specifically, the work platform system 10 is composed of three row units 20a to 20c arranged along the front-to-rear direction, each row unit consisting of a work platform 100 and a bridge carriage 200. These row units 20a to 20c serve as the basis for configuring the work platform system 10. The three row units 20a to 20c are arranged in the following order from rear to front: work platform 100, bridge carriage 200, work platform 100, bridge carriage 200, work platform 100. In this embodiment, in a plan view, the work platform 100 and the bridge carriage 200 are approximately the same size and have a substantially rectangular shape with the front-to-rear direction (longitudinal direction) longer than the left-to-right direction (transverse direction). More specifically, the ratio of the length in the front-to-rear direction to the length in the left-to-right direction of the work platform 100 and the bridge carriage 200 is approximately 3:2.

[0012] The workbench system 10 is configured by a plurality of bridges 300 that are seamlessly bridged between three row units 20a to 20c that are arranged parallel to each other with a gap in the left-right direction. In this embodiment, the bridge 300 has a substantially rectangular shape in a plan view, with the front-to-rear direction (short side) being shorter than the left-to-right direction (long side). More specifically, the ratio of the front-to-rear length of the bridge 300 to the left-to-right direction is approximately 1:3. Furthermore, the front-to-rear length of the workbench 100 and the bridge cart 200 and the left-to-right length of the bridge 300 are approximately the same, and the ratio of the front-to-rear length of the workbench 100 and the bridge cart 200 to the front-to-rear length of the bridge 300 is approximately 3:1. Therefore, three bridges 300 can be bridged between workbenches 100 that are spaced apart, and three bridges 300 can be bridged between bridge carts 200 that are spaced apart. As a result, 15 bridges 300 are arranged between the row unit 20a and the row unit 20b, and 15 bridges 300 are arranged between the row unit 20b and the row unit 20c.

[0013] The handrail unit 30 is attachable and detachable, and surrounds the outer periphery of the work plane by being attached along the outer periphery of the work plane. When a worker works on the work plane, part of the worker's body comes into contact with the handrail unit 30, allowing the worker to recognize that he or she is at the edge of the work plane. The handrail unit 30 has multiple handrails. The handrail section 30 of this embodiment has long handrails 31 and short handrails 32, and the specific numbers of long handrails 31 and short handrails 32 surrounding the outer periphery of the work plane are 13 units.

[0014] The longitudinal handrails 31 have approximately the same length as the longitudinal lengths of the work platform 100, the bridge cart 200, and the bridge 300 in a plan view. The longitudinal handrails 31 are attached to the longitudinal ends of the work platform 100, the bridge cart 200, and the bridge 300, which are located on the periphery of the work plane. However, in the work platform 100c shown in Fig. 1A, short handrails 32 are attached instead of the longitudinal handrails 31 in order to attach the ladder section 60 to the longitudinal ends. Furthermore, in a plan view, the short handrails 32 have approximately the same length in the short direction as the lengths of the work platform 100 and the bridge cart 200. The short handrails 32 are attached to the short end portions of the work platform 100 and the bridge cart 200 located on the periphery of the work plane.

[0015] The ladder section 60 is attached to the outer periphery of the work surface, allowing the worker to ascend and descend between the work surface and the floor. The work platform system 10 of this embodiment specifically has one ladder unit 60. In plan view, the ladder unit 60 has a length that is appropriately shorter than the short-side lengths of the work platform 100 and the bridge 300. The ladder unit 60 is attached to the long-side end or the short-side end of the work platform 100, the bridge cart 200, or the bridge 300 located on the 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 panel 110 , legs 130 , a rotating part 150 , and a running part 180 . The top panel 110 serves as a foothold for workers working at height. In a plan view, the top panel 110 has a generally rectangular shape that is long in the front-to-rear direction. In this embodiment, the length of the top panel 110 in the front-to-rear direction (longitudinal direction) is, for example, approximately 1550 mm, and the length in the left-to-right direction (shortitudinal direction) is, for example, approximately 1010 mm. The top panel 110 is also, for example, approximately 1000 mm to approximately 1500 mm high from the floor. Note that the lengths of the top panel 110 in the front-to-rear direction and left-to-right direction may be approximately equal.

[0017] The top panel 110 has multiple anti-slip protrusions on its surface, which serves as a work surface. The top panel 110 also has a connecting bar 114 located near the outer periphery. The top panel 110 also has multiple connecting holes 118 located near the outer periphery. The connecting holes 118 are located at each of the long side end (first end) and the short side end (second end) of the top panel 110. For example, six connecting holes 118 are formed at each of the long side end and four connecting holes 118 are formed at each of the short side end. The connecting holes 118 are holes for connecting to connecting pins 221 of the bridge cart 200, connecting pins 321 of the bridge 300, or connecting bars 114 of another work table 100 when the work table 100 is placed directly adjacent to the other work table 100. The top panel 110 also has a plurality of handrail holes 125 for attaching the handrail section 30 near the outer periphery. The handrail holes 125 are located at the long end (first end) and the short end (second end) of the top panel 110. For example, six handrail holes 125 are formed at the long end, and two at the short end. Note that FIG. 4 only shows two handrail holes 125 for attaching the long handrail 31 to the long end of the top panel 110. Here, the pitch of the two handrail holes 125 at the short end is different from the pitch of the two handrail holes 125 at the long end.

[0018] The legs 130 support the weight of the tabletop 110 and the weight of a worker working on the tabletop 110. The legs 130 are connected to the underside of the tabletop 110 and are rotatable relative to the tabletop 110. When the legs 130 rotate, the legs 130 are folded so that they overlap the tabletop 110. Specifically, the legs 130 have four leg members 131a to 131d. Note that 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 extend from positions close to the four corners of the tabletop 110 toward the floor.

[0019] Furthermore, horizontal beam members 137 are provided horizontally between leg members 131a and 131b and between leg members 131c and 131d. By providing horizontal beam members 137 between leg members 131a and 131b and between leg members 131c and 131d, leg members 131a and 131b form a single unit, i.e., a first leg body, and leg members 131c and 131d form a single unit, i.e., a second leg body. Therefore, when leg portion 130 rotates relative to top panel portion 110, leg members 131a and 131b rotate together, and leg members 131c and 131d rotate together. The leg members 131a and 131b, and the leg members 131c and 131d can be extended and retracted in stages in the height direction.

[0020] Furthermore, in the workbench 100 of this embodiment, the legs 130 do not extend completely vertically in the spread-leg position, but are inclined relative to the vertical to improve stability. That is, when the workbench 100 is viewed in the left-right direction, the pair of legs are inclined away from each other as they move from the upper end to the lower end.

[0021] The pivoting unit 150 serves to pivot the leg unit 130 relative to the top panel 110. By pivoting the leg unit 130 relative to the top panel 110 via the pivoting unit 150, the leg unit 130 changes between an open-leg posture in which the leg unit 130 extends downward and a closed-leg posture in which the leg unit 130 overlaps the top panel 110 and is folded. Specifically, the pivoting unit 150 has four pivoting bodies 151a to 151d. Note that in FIG. 4, pivoting bodies 151b and 151d are not shown because they are hidden by pivoting bodies 151a and 151c, respectively. The pivoting bodies 151a to 151d are arranged between the leg members 131a to 131d and the top panel 110, respectively. Here, the rotation support point P1 of the rotating bodies 151a and 151b is positioned above the rotation support point P2 of the rotating bodies 151c and 151d, that is, offset toward the top panel portion 110.

[0022] The running unit 180 supports the top panel 110 and the legs 130 and moves the workbench 100 to any position. The running unit 180 is connected to the underside of the legs 130. Specifically, the running unit 180 has four casters 181a to 181d. Note that 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. Furthermore, the casters 181a to 181d are each equipped with a stopper that can lock the rotation of the wheels in response to operation by the worker. When working at height, the worker can operate the pedals of the casters 181a to 181d of the running unit 180 to lock the rotation of the wheels, thereby allowing the work at height to be performed safely without the workbench 100 moving.

[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 cart 200 is spanned across the top plate portions 110 of the work platforms 100, which are arranged at a distance in the front-to-rear direction. The bridge cart 200 not only serves as a scaffold for performing high-altitude work, but also functions as a transport cart capable of carrying the components of the work platform system 10. The bridge cart 200 corresponds to an example of a first bridge.

[0024] The bridge carriage 200 has a main body 210 and a running section 230 . The main body 210 serves as a foothold for workers working at height. The main body 210 also serves as a loading section for loading the work platform 100 when the bridge cart 200 is used as a transport cart. The main body 210 has a generally rectangular shape that is long in the front-to-rear direction in a plan view. In this embodiment, the length of the main body 210 in the front-to-rear direction (longitudinal direction) is, for example, approximately 1550 mm, and the length in the left-to-right direction (transverse direction) is, for example, approximately 1010 mm. The size of the main body 210 of the bridge cart 200 and the size of the top panel 110 of the work platform 100 are generally the same. However, the size of the main body 210 and the size of the top panel 110 are not limited to being generally the same. The length of the main body 210 in the front-to-rear direction and the left-to-right direction may be generally the same.

[0025] The main body 210 has multiple anti-slip protrusions on its surface, which serves as the work surface. The main body 210 also has multiple connecting holes 218 at positions close to the outer periphery. For example, six connecting holes 218 are formed at the end on the longitudinal side. The connecting holes 218 are holes for connecting to connecting pins 321 of the bridge 300. The main body 210 also has a plurality of handrail holes 225 for attaching the handrail section 30 at a position close to the outer periphery and at the end on the longitudinal side. For example, six handrail holes 225 are formed at the end on the longitudinal side. Note that Fig. 5 only shows two handrail holes 225 for attaching the longitudinal handrail 31 at the end on the longitudinal side of the main body 210. Here, the pitch between the two handrail holes 225 at the end on the longitudinal side shown in Fig. 5 is approximately the same as the pitch between the two handrail holes 125 at the end on the longitudinal side shown in Fig. 4. The main body 210 also has connecting pins 221 at its short end, which is the side that connects to the workbench 100. Specifically, the connecting pins 221 are provided at both ends of the short end (front end and rear end). The connecting pins 221 are attached to plate-shaped brackets 222 that extend from the short end (front end and rear end) of the main body 210 toward the front and rear, respectively. The connecting pins 221 protrude downward from the underside of the brackets 222. The bridge cart 200 and the workbench 100 are connected by inserting the connecting pins 221 from above into the connecting holes 118 of the workbench 100. Here, the connecting pins 221 and the brackets 222 correspond to an example of a connecting portion.

[0026] The running unit 230 has a role of running on the floor surface while supporting the weight of the main body 210 and the cargo when the bridge cart 200 is functioning as a transport cart. The running unit 230 is located below the main body 210 and has a plurality of (four) casters 231a to 231d arranged at the four corners. Note that 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 underside of the main body 210. The casters 231a to 231d are rotatable around the axis of a rotation shaft O that is aligned in the vertical direction. In FIG. 5, the wheels 233 are oriented in the front-to-rear direction, but by rotating the wheels 233 around the axis of the rotation shaft O, the bridge cart 200 can travel in any direction, including front-to-rear, left-to-right, and not just forward.

[0027] Casters 231a to 231d are brake-equipped casters that can apply or release the brakes in response to an operator's operation. Specifically, casters 231a to 231d each have a wheel 233, a fork member 234 as a support member, and a brake pedal 235. Fork member 234 rotatably supports wheel 233. Brake pedal 235 can swing up and down relative to fork member 234. Brake pedal 235 has an operating unit 236 at its tip that is depressed with the foot. When an operator operates operating unit 236 to brake, the outer circumferential surface of wheel 233 is pressed, and wheel 233 is braked. When the operator further depresses operating unit 236, wheel 233 is maintained in a braked state.

[0028] 5 shows a state in which the brakes are not applied (a state in which the brakes are released). As shown in FIG. 5, casters 231a and 231b, which are on the rear side when the bridge cart 200 is traveling, have operating parts 236 of brake pedals 235 located rearward of the rear end of the main body 210 and exposed. Furthermore, when the brake is released and the wheels 233 are facing forward and backward, the operating part 236 is positioned so as not to overlap with the connecting pin 221 and the bracket 222 in a plan view. Therefore, when it is necessary to apply the brakes, the operator can easily depress the operating part 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 spanned across the top plate portions 110 of the workbenches 100, which are arranged apart in the left-right direction. The bridge 300 is also spanned across the main body portions 210 of the bridge carts 200, which are arranged apart in the left-right direction. The bridge 300 corresponds to an example of a second bridge.

[0030] The bridge 300 has a body portion 310 . The main body 310 serves as a foothold for workers working at height. In a plan view, the main body 310 has a generally rectangular shape that is long in the left-right direction. In this embodiment, the length of the main body 310 in the front-to-rear direction (short side direction) is, for example, about 500 mm, and the length in the left-to-right direction (short side direction) is, for example, about 1530 mm. Note that the length of the main body 310 in the front-to-rear direction and the left-to-right direction may be generally equal.

[0031] The main body 310 has multiple anti-slip protrusions on its surface, which serves as a work surface. The main body 310 also has multiple handrail holes 325 for attaching the handrail section 30 at its longitudinal end, near its outer periphery. Six handrail holes 325, for example, are formed at the longitudinal end. Note that FIG. 6 only shows two handrail holes 325 for attaching the longitudinal handrail 31 at the longitudinal end of the main body 310. The pitch between the two handrail holes 325 at the longitudinal end shown in FIG. 6 is approximately the same as the pitch between the two handrail holes 225 at the longitudinal end shown in FIG. 5 and the pitch between the two handrail holes 125 at the longitudinal end shown in FIG. 4.

[0032] The main body 310 also has a connecting pin 321 at its short end, which is the side that connects to the work platform 100 or the bridge cart 200. Specifically, the connecting pin 321 is provided at each end of the short end (right end and left end). The connecting pin 321 is attached to a plate-shaped bracket 322 that extends to the right and left from the short end (right end and left end) of the main body 310. The connecting pin 321 protrudes downward from the underside of the bracket 322. The connecting pin 321 is connected to the work platform 100 or the bridge cart 200 by inserting it from above into the connecting hole 118 of the work platform 100 or the connecting hole 218 of the bridge cart 200. Here, the connecting pin 321 and the bracket 322 correspond to an example of a connecting portion.

[0033] Next, the configuration of the handrail section 30 will be described with reference to Figures 7 and 8. The long handrail 31 and the short handrail 32 have substantially the same configuration except for their lengths, so the long handrail 31 will be mainly described. The following mainly describes the case where the long handrail 31 is attached to the top plate 110 of the work platform 100, but the same applies when attaching it to the main body 210 of the bridge cart 200 or the main body 310 of the bridge 300. 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 refers to the space above the work plane, which overlaps with 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 rail member 36, a middle rail member 37, a baseboard member 38, two support members 43, two abutment members 50, and two insertion pins 55. The upper rail member 36 corresponds to an example of a second horizontal member. The middle rail member 37 corresponds to an example of a first horizontal member. The baseboard member 38 corresponds to an example of a third horizontal member.

[0035] The support member 33 supports the upper rail member 36, the middle rail member 37, and the baseboard member 38. The support member 33 is generally rod-shaped and extends linearly in a generally vertical direction. In this embodiment, the length of the support member 33 is, for example, approximately 1000 mm. When the long 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 rail member 36 and the middle rail member 37, and a second support portion 35 that supports the baseboard member 38. The first support portion 34 and the second support portion 35 are fixed so as to extend generally vertically. In this 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 34 and the second support column 35 have, for example, a hollow, substantially rectangular cross section. Here, the first support column 34 and the second support column 35 are made of different materials, with the first support column 34 being made of a material that is more flexible than the second support column 35. The first support column 34 has lower rigidity than the second support column 35. Specifically, the first support column 34 is made of, for example, a synthetic resin, and the second support column 35 is made of, for example, an aluminum alloy. The second support column 35 is fixed with screws, rivets (including blind rivets), or the like, with its outer periphery fitted into the first support column 34. However, the support column member 33 may be formed of a single member. In this case, the support column member 33 can be made of a material that is more flexible than the top panel portion 110, for example, a synthetic resin. Furthermore, a plurality of support column members 33 (two in total) are arranged at an interval. Furthermore, a protective cap made of resin is attached to the upper end of the support member 33.

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

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

[0039] The upper rail member 36 and the middle rail member 37 are fixed to the two support members 33 in a state in which they cross each other. As shown in FIG. 7(b), when viewed from a direction perpendicular to the vertical and horizontal directions, both ends of the upper rail member 36 and the middle rail member 37 are located outside the two support members 33. In other words, the ends of the upper rail member 36 and the middle rail member 37 are not located between the two support members 33, but protrude beyond the support members 33 in the horizontal direction. In this embodiment, the protrusion amounts L of the upper rail member 36 and the middle rail member 37 from the support members 33 are approximately the same, for example, approximately 100 mm to approximately 300 mm. Also, as shown in Figure 8, the upper rail member 36 and the middle rail member 37 are fixed using mounting members 40 with screws, rivets, etc., while 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 is generally hat-shaped in plan view and has a generally U-shaped cover portion 41 that covers three sides of the support member 33 from outside the work area, and a flange portion 42 that contacts the upper rail member 36 and the middle rail member 37. The mounting member 40 is made of, for example, an aluminum alloy or iron. The cover portion 41 and the flange portion 42 each have holes formed therein for inserting screws, rivets, etc. The mounting member 40 fixes the upper rail member 36 and the middle rail member 37 to the support member 33.

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

[0042] The baseboard member 38 is fixed to the second support portions 35 of the two support members 33. Specifically, as shown in Fig. 8, the baseboard member 38 is fixed to the second support portions 35 of the two support members 33, which are spaced apart, with the baseboard member 38 in contact with the opposing side surfaces 35a of the second support portions 35, using support members 43 and L-shaped members 48 with screws, rivets, or the like.

[0043] The support member 43 supports the weight of the entire long handrail 31 when the long handrail 31 is attached to the top panel 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 support member 33. The support member 43 is a plate-shaped member bent at a substantially right angle and has a support portion 44 extending substantially horizontally and an upright portion 45 extending substantially vertically and contacting the support member 33 and the baseboard member 38. The support member 43 is made of, for example, an aluminum alloy or iron. When the long handrail 31 is attached to the top panel 110 of the workbench 100, the support portion 44 rests on the surface of the top panel 110 to support the weight of the entire long handrail 31 and transmit the weight of the long handrail 31 to the top panel 110. The support portion 44 also has two insertion holes 46a, 46b formed at a distance from each other for inserting an insertion pin 55. Here, the insertion holes 46a, 46b are elongated holes that extend along the longitudinal direction of the upper rail member 36 and the middle rail member 37. The standing portion 45 also has a plurality of holes formed therein through which screws, rivets, etc., for connecting the support member 33 and the baseboard member 38 are inserted. The insertion hole 46a is a hole that communicates with the handrail hole 125 formed in the long end of the tabletop portion 110 when the long handrail 31 is attached to the long end of the tabletop portion 110. On the other hand, the insertion hole 46b is a hole that communicates with the handrail hole 125 formed in the short end of the tabletop portion 110 when the short handrail 32 is attached to the short end of the tabletop portion 110. In this way, by forming the insertion holes 46a, 46b for attaching the long handrail 31 and the short handrail 32 in the support portion 44 of the support member 43, the support member 43 can be used for both the long handrail 31 and the short handrail 32, allowing for standardization of parts.

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

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

[0046] The insertion pin 55 is a pin that is inserted into the insertion holes 46a, 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 described. First, the worker assembles three row units 20a to 20c aligned along the front-to-rear direction as a reference. Specifically, the workbenches 100a to 100c, 100d to 100f, and 100g to 100i are arranged with their longitudinal directions aligned along the front-to-rear direction, and are spaced apart at regular intervals in one direction.

[0048] Next, the worker bridges the bridge cart 200 between the top plate portions 110 of the work tables 100 that are separated in the front and rear. That is, the bridge carts 200a, 200c, and 200e are bridged between the work tables 100a, 100d, and 100g and the work tables 100b, 100e, and 100h, and the bridge carts 200b, 200d, and 200f are bridged between the work tables 100b, 100e, and 100h and the work tables 100c, 100f, and 100i. Specifically, the connecting pins 221 of the main body 210 of the bridge cart 200 are inserted into the connecting holes 118 of the workbench 100. Thus, the bridge cart 200 is connected to the workbench 100. At this time, a space is formed between the running parts 230 of the bridge cart 200, i.e., the casters 231a to 231d, and the floor surface.

[0049] Next, the worker spans multiple bridges 300 between the three row units 20a to 20c arranged at regular intervals in the left-right direction (other direction). That is, the worker spans bridges 300 between work platforms 100a, 100b, 100c and 100d, 100e, 100f, and between work platforms 100d, 100e, 100f and 100g, 100h, 100i. The worker also spans bridges 300 between bridge carts 200a, 200b and 200c, 200d, and between bridge carts 200c, 200d and 200e, 200f. Specifically, the connecting pins 321 of the main body 310 of the bridge 300 are inserted into the connecting holes 118 of the work platform 100 or the connecting holes 218 of the bridge cart 200. Thus, the bridge 300 is connected to the adjacent work platform 100 and bridge cart 200. By connecting the work platform 100, the bridge cart 200, and the bridge 300 in this way, a work plane is formed where workers can work at height. At this time, a space is formed between the bridge 300 and the floor. Here, since 15 bridges 300 are arranged in the front-to-rear direction, a long space is formed between the 15 bridges 300 and the floor in the front-to-rear direction, and this long space can be used to store temporary equipment and materials.

[0050] Next, the worker attaches the handrail section 30 to the outer periphery of the work plane. Specifically, the worker attaches the long handrails 31 to the left ends of the work platforms 100a, 200a, 100b, and 200b, and to the right ends of the work platforms 100g, 200e, 100h, 200f, and 100i. The worker also attaches the long handrails 31 to the front end of the bridge 300 located at the front side of the work plane and the rear end of the bridge 300 located at the rear side of the work plane. The worker also attaches the short handrails 32 to the rear ends of the work platforms 100a, 100d, and 100g, the front ends of the work platforms 100c, 100f, and 100i, and the left end of the work platform 100c.

[0051] Here, the case where the longitudinal handrail 31 is attached to the top panel portion 110 of the workbench 100 will be described with reference to FIGS. Figure 9 is an oblique view showing a case where a long handrail 31 is attached to the left end, which is the long side end, of the workbench 100a, and a short handrail 32 is attached to the rear end, which is the short side end, of the workbench 100a. 10 is a cross-sectional view taken along line II in the substantially vertical direction and viewed from the direction of the arrow in FIG. 9, with the longitudinal handrail 31 attached to the left end, which is the end on the longitudinal side, of the workbench 100a.

[0052] To attach the long handrail 31 to the tabletop 110, the worker brings the long handrail 31 close to the tabletop 110 while tilting the underside of the long handrail 31 so that it approaches the tabletop 110. Next, the worker inserts and hooks the tip of the abutment member 50 into a rib 126 (see FIG. 10 ) formed on the bottom of the tabletop 110, and then rotates the long handrail 31 around the tip of the abutment member 50 to raise it up. With the support member 33 of the long handrail 31 oriented approximately vertically, the support portion 44 of the support member 43 rests on the surface of the tabletop 110. At this time, the insertion hole 46a of the support portion 44 communicates with the handrail hole 125. The worker then inserts the insertion pin 55 into the insertion hole 46a and the handrail hole 125 to attach the long handrail 31 to the tabletop 110. Furthermore, since the insertion hole 46a of the support part 44 is a long hole, even if the longitudinal handrail 31 is slightly misaligned along the outer peripheral edge of the top plate part 110, the insertion hole 46a of the support part 44 and the handrail hole 125 can be connected. Here, we have explained the case where the long handrail 31 is attached to the top plate 110 of the work platform 100, but the same applies when the long handrail 31 or the short handrail 32 is attached to the top plate 110 of the work platform 100, the main body 210 of the bridge cart 200, or the main body 310 of the bridge 300.

[0053] Next, the worker attaches the ladder section 60 to the outer periphery of the work surface. Specifically, the ladder section 60 is attached to the left end of the work platform 100c. The position where the ladder section 60 is attached can be changed as needed, and the attachment position of the short handrail 32 can be changed depending on the attachment position of the ladder section 60.

[0054] In the work platform system 10 assembled in this manner, the handrail section 30 can surround the work plane, allowing the worker to work at height safely. Here, when viewed from the working area, the long handrail 31 and short handrail 32 of this embodiment have both end portions of the upper rail member 36 and middle rail member 37 located outside the two support members 33. In other words, both end portions of the upper rail member 36 and middle rail member 37 are not located between the two support members 33, but rather protrude laterally beyond the support members 33. Therefore, the ends of the upper rail member 36 and middle rail member 37 can be placed close to the end portion of the adjacent long handrail 31 or adjacent short handrail 32, thereby reducing the gap between adjacent handrails.

[0055] When the handrail section 30 is attached, the ends of the upper rail members 36 and middle rail members 37 of adjacent long handrails 31 or short handrails 32 face each other at approximately the same height, reducing the gap between the ends, as shown by the two-dot chain line in Figure 8. Reducing the gap in this way makes it easier for parts of the worker's body to come into contact with the upper rail member 36 and middle rail member 37 when working on the work surface. Furthermore, it is preferable that the long handrail 31 and the short handrail 32 are arranged so that both ends of the upper rail member 36 and the middle rail member 37 are positioned outside the two support members 43 or the two support members 33 when viewed from the work area.

[0056] 10, the long handrails 31 and short handrails 32 of this embodiment have the upper rail member 36 and middle rail member 37 positioned closer to the inside of the work area of ​​the workbench 100 than the two support members 33. Specifically, the support members 33 and the top panel 110 do not substantially overlap in the vertical direction, but the upper rail member 36 and middle rail member 37 and the top panel 110 substantially overlap in the vertical direction. This makes it easier for part of the worker's body to come into contact with the upper rail member 36 or middle rail member 37, allowing the worker to recognize the end of the work plane at an early stage when working near the edge of the work plane. On the other hand, the baseboard member 38 is positioned closer to the outside of the working area of ​​the workbench 100 than the upper and middle rail members 36 and 37. Specifically, as shown in Fig. 8, the baseboard member 38 is positioned between the two support members 33. This prevents the surface of the top panel 110 of the workbench 100 from being covered by the baseboard member 38, ensuring a wide working surface for the top panel 110.

[0057] Furthermore, at least a portion of the support members 33, for example, more than half of its length, is made of a flexible material. Therefore, when a worker leans against the long handrails 31 and the short handrails 32 from the inside to the outside of the work area, the support members 33 bend, causing the long handrails 31 and the short handrails 32 to tilt toward the outside of the work area. In other words, the longer the long handrails 31 and the short handrails 32 are, the more they tilt toward the outside of the work area. In this way, by bending the support members 33 and tilting the long handrails 31 and the short handrails 32, the support members 33 absorb the force generated when the worker leans against them. Therefore, the force generated when the worker leans against them can be prevented from being transmitted from the support members 33 to the top panel 110 of the work platform 100, the main body 210 of the bridge cart 200, or the main body 310 of the bridge 300, thereby preventing the work platform 100 and the like from tipping over. Furthermore, since the upper and middle rail members 36 and 37 are made of a flexible material, the upper and middle rail members 36 and 37 can also absorb the force when the worker leans against them.

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

[0059] In this embodiment, before the work platform system 10 is assembled, when the components of the work platform system 10 are stored in a warehouse or the like, the components can be stored loaded onto the bridge cart 200. It is preferable to load different types of components onto each of the bridge carts 200a to 200f so that they are easy for workers to handle. By storing the components of the work platform system 10 loaded onto the bridge cart 200 in this manner, the bridge cart 200 functions as a transport cart, making it easy to remove from the warehouse. Furthermore, when the storage location of the work platform system 10 is changed within the warehouse, the storage location can be easily changed.

[0060] Although the present invention has been described above with reference to the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment, and modifications and the like are possible within the scope of the present invention. In the above embodiment, the long handrail 31 and the short handrail 32 have been described as having two support members 33, but this is not limited to this and they may have three or more support members 33. In this case, the upper rail member 36 and the middle rail member 37 can be configured so that both ends are located outside the two support members 33 that are located outermost among the three or more support members 33. In addition, in the above-described embodiment, the handrail section 30 has been described as having two types of handrails, a long handrail 31 and a short handrail 32, but this is not limited to this case and may have one type of handrail, or three or more types of handrails.

[0061] Furthermore, in the above-described embodiment, the long handrail 31 and the short handrail 32 have one central crosspiece member 37, but this is not limitative and they may have two or more central crosspiece members. In the above-described embodiment, the case where three bridges 300 are connected to one longitudinal end of the work platform 100 or the bridge cart 200 has been described, but the present invention is not limited to this. For example, instead of the bridge 300, a single bridge formed by combining three arranged bridges 300 may be used.

[0062] Furthermore, the above-mentioned workbench system 10 has been described as forming an approximately rectangular work plane, but if there is a pillar at the work site, for example, interference with the pillar can be prevented by removing a portion of the bridge 300 and inserting the pillar into the removed position. Furthermore, the bridge cart 200 described above has been described as having the running section 230, but this is not limited to this case, and the bridge cart may simply be a bridge without the running section 230, or may be a work platform 100. When the bridge cart 200 is used as a work platform 100, the work platforms 100 are adjacent to each other.

[0063] In this embodiment, the case where the end of the middle sash member 37 is located outside the two support members 33 when viewed from a direction perpendicular to the vertical and horizontal directions has been described, but this is not limited to this case and can be modified as appropriate depending on the issues, etc. [Explanation of symbols]

[0064] 10: Workbench system 30: Handrail section 33: Support member 36: Upper rail member 37: Middle rail member 38: Baseboard member 43: Support member 50: Contact member 100 (100a to 100i): Workbench 110: Top plate section 130: Leg section 200 (200a to 200d): Bridge cart 210: Main body section 300: Bridge 310: Main body section

Claims

1. A handrail attached to the top plate of a workbench, Two support members extending substantially in the vertical direction; a first horizontal member disposed along the horizontal direction at a position spaced downward from the upper ends of the two support members; When viewed from a direction perpendicular to the substantially vertical direction and the lateral direction, the first horizontal member: A handrail characterized in that its ends are located outside the two support members.

2. The handrail according to claim 1, wherein the support member has a mounting portion for mounting the handrail to the top plate portion at a position lower than the first horizontal member.

3. When the handrail is attached to the top plate portion, 3. The handrail according to claim 1, wherein the first horizontal member is positioned closer to the inside of the working area than the two support members.

4. a second horizontal member disposed laterally along the upper end portions of the two support members; When viewed from a direction perpendicular to the substantially vertical direction and the lateral direction, the second horizontal member:

4. The handrail according to claim 1, wherein the end portions are located outside the two support members.

5. a third cross member disposed laterally below the first cross member; When the handrail is attached to the top plate portion, 5. The handrail according to claim 1, wherein the third horizontal member is positioned closer to the outside of the working area than the first horizontal member.

6. 6. The handrail according to claim 1, wherein the support member is flexible.

7. a workbench having legs and a top plate; a bridge connected to the work platform; A first handrail attached to a top plate portion of the workbench; a second handrail attached to the bridge, The first handrail and the second handrail are each Two support members extending substantially in the vertical direction; a horizontal member that is disposed along the horizontal direction at a position spaced downward from the upper ends of the two support members, and whose end is located outside the two support members when viewed in the direction orthogonal to the approximately vertical direction and the horizontal direction, A work platform system characterized in that an end of the horizontal member of the first handrail and an end of the horizontal member of the second handrail face each other at approximately the same height.

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