JP2014234294A - Hand rail drive device for passenger conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that, in a case of manufacturing a sheave main body part by casting, since casting skin shall be removed by applying cutting processing to the outer peripheral surface before sticking rubber etc. because of existence of roughness due to casting skin on the outer peripheral surface, the number of processing processes becomes large, and the mass becomes large because the minimum thickness is required for casting.SOLUTION: In a hand rail drive device for a passenger conveyor which comprises an endless-state hand rail provided at a railing part of the passenger conveyor, a sheave for drive-traveling the hand rail by friction force of a hand rail winding part, and a pressing part for pressing the hand rail to the sheave, as the sheave part, formed are a discoid disc part which a sheave flange formed by applying bending processing to circular edge parts of plural metal plate members is fitted to for fixing by combination of rivets and screws, and a cylindrical hand rail winding part, and a friction member is fitted to the cylindrical surface of the cylindrical hand rail winding part.

Description

  The present invention relates to a handrail drive device for a passenger conveyor, and more particularly to a handrail drive device for a passenger conveyor in which a main portion of a sheave is formed by a plurality of sheet metals.

  The main part of the sheave of the handrail drive device for passenger conveyor is mainly manufactured by casting. In the automobile field, sheet metal pulleys in which a frictional force acts on the outer periphery are in practical use.

JP 2006-193295 A Japanese Utility Model Publication No. 7-28258

  In the conventional handrail drive device for passenger conveyors, when the sheave main part is manufactured by casting, the outer peripheral surface has a roughened surface, so the outer peripheral surface is cut before pasting rubber, etc. Since it needs to be removed, there is a problem that the number of processing steps increases. Moreover, in order to cast, the minimum thickness was required, and there existed a problem that mass became large for that (patent document 1). Moreover, the sheet metal pulley used in the automobile field is not a size necessary for the sheave (Patent Document 2).

  A handrail drive device for a passenger conveyor according to the present invention includes a sheave having a handrail winding portion that winds an endless handrail provided on a balustrade portion of the passenger conveyor, and a pressing portion that presses the handrail against the sheave. A handrail drive device for a passenger conveyor, wherein the sheave is attached to a cylindrical sheave main portion formed by combining a plurality of fan-shaped sheet metal members formed by bending an outer peripheral arc portion, and the handrail winding portion And a friction member.

  According to the handrail drive device for a passenger conveyor of the present invention, by constituting the sheave main body portion with a plurality of sheet metal members, it is possible to reduce the component parts, and it is possible to perform molding with a small processing machine, and productivity is improved. improves. In addition, since the connecting portion between the parts serves as a reinforcement, the thickness of the plate of the sheave main portion can be reduced and the weight can be reduced, and the productivity is improved. Further, since the friction member has the same thickness as the conventional sheave, the same level of handrail driving force as that of the conventional sheave can be obtained. Further, by configuring the sheave main body with a sheet metal member, there is no roughness of the casting surface on the outer peripheral surface, and there is no need to cut the outer peripheral surface of the sheave main portion.

It is an enlarged view of sheave 11 vicinity in the handrail drive device part of the passenger conveyor in Embodiment 1 of this invention. It is a side view which shows the whole passenger conveyor structure in Embodiment 1 of this invention. It is explanatory drawing which shows the principle which a driving force generate | occur | produces in a handrail by a sheave in the handrail drive device part of the passenger conveyor in Embodiment 1 of this invention. It is a figure which shows an example of a structure of the sheave of the handrail drive device of the passenger conveyor in Embodiment 1 of this invention. It is sectional drawing which shows the whole structure at the time of attaching a sheave to the drive shaft in Embodiment 1 of this invention. It is a figure which shows the structure of the sheave part of the handrail drive device of the passenger conveyor in Embodiment 2 of this invention. It is a figure which shows one part of the sheave part of the handrail drive device of the passenger conveyor in Embodiment 3 of this invention. It is sectional drawing which expanded and showed the outer peripheral part of the sheave part of the handrail drive device of the passenger conveyor in Embodiment 4 of this invention. It is sectional drawing which expanded and showed the outer peripheral part of the sheave part of the handrail drive device of the passenger conveyor in Embodiment 5 of this invention.

Embodiment 1 FIG.
Based on FIGS. 1-5, the structure of the handrail drive device of the passenger conveyor in Embodiment 1 is demonstrated.
In FIG. 2, a main body frame 1 spanned between adjacent floors is connected endlessly between a balustrade 2 disposed opposite to both sides in the longitudinal direction of the main body frame 1 and the balustrade 2. A plurality of traveling steps 3, an upper step sprocket 4, and a lower step sprocket 5, and the step chain 6 is wound between the upper step sprocket 4 and the lower step sprocket 5.
7 is a drive sprocket provided coaxially with the upper step sprocket 4, and 8 is a drive machine. A drive chain 9 is wound between the drive machine 8 and the drive sprocket 7.
The steps 3 are connected endlessly by a step chain 6, and the steps 3 circulate and move when the step chain 6 is driven by the drive machine 8 via the drive chain 9, the drive sprocket 7, and the upper step sprocket 4. . 10 is an endless handrail attached to the peripheral portion of the balustrade 2 so as to be able to circulate, and 11 is a sheave on which a part of the handrail 10 is wound and the handrail 10 is caused to travel by the frictional force of the wound portion, Reference numeral 12 denotes a drive shaft of the sheave 11. The drive shaft 12 is driven by the drive unit 8 or a unique drive source (not shown), and drives the handrail 10 by rotationally driving the sheave 11 as described in detail in FIG.

  In FIG. 1, reference numeral 13 denotes a bendable holder, and reference numeral 14 denotes a plurality of pressure rollers that constitute a pressing portion for pressing the handrail 10 against the sheave 11. The pressure rollers are wound around the sheave 11. It is disposed along the longitudinal direction of the holder 13 in a fixed section of the handrail portion, and is attached rotatably at a fixed interval. Note that this pressing portion can be implemented by a belt (not shown) instead of the pressure roller.

In FIG. 3, the handrail 10 is wound around the handrail winding portion 10 a of the sheave 11 and is pressed by the pressurizing force 21 by the plurality of pressure rollers 14, and a driving amount 20 is given by the frictional force. At this time, the friction force with the handrail 10 and the applied pressure 21 act on the sheave 11.
In FIG. 3, the drive shaft 12 and the sheave 11 are attached via a sheave flange (not shown).

Next, the configuration of the sheave 11 will be described with reference to FIGS.
4 is a diagram showing an example of the configuration of the sheave 11 according to the first embodiment of the present invention. FIG. 4 (a) is a front view, FIG. 4 (b) is a side view, and FIG. 4 (c) is a diagram. FIG. 4B is an enlarged view of a portion including the friction member of the sheave 4 (b) (portion indicated by “A” in the drawing), and FIG. 4D is a cross-sectional view showing the coupling portion in an enlarged manner. . FIG. 5 is a cross-sectional view showing the overall structure when the sheave shown in FIG. 4 is attached to the drive shaft according to the first embodiment of the present invention.

4 and 5, the sheave 11 includes a sheave main body 15 and a friction member 16. Here, the sheave main body 15 is formed by bending the peripheral edges of a plurality of sheet metal members 15a, 15b, and 15c having a substantially fan shape and the same shape by drawing or the like (in the drawing, the outer peripheral arc portion is bent). ), A driving device for driving a handrail by using a fixing member 19 such as a rivet or a screw and combining and fixing each other at a coupling portion 18 located at the boundary of the outer edge of each sheet metal member This includes an inlay 17 that forms a disc-like disk portion to which a sheave flange 22 attached to the drive shaft 12 is attached, a handrail winding portion 10a for attaching the friction member 16 to the outer peripheral surface of the cylinder, and the like. Then, by providing the inlay 17 in the sheave main body 15, it is possible to facilitate the assembly by fitting with the sheave flange 22 attached to the drive shaft 12. Assembly with the sheave flange 22 can be performed by fixing the sheave main body 15 with a bolt in a screw hole machined into the sheave flange 22.
The friction member 16 is made of a material such as rubber having a higher coefficient of friction than iron. After the sheave main body 15 is fixed by a fixing member 19 such as a rivet or a screw, the structure is integrated. It is manufactured by pouring a material such as rubber by a transfer method or injection method in a mold of the required size.
And since the coupling | bond part 18 of the some sheet-metal member 15a, 15b, 15c plays the role of reinforcement, while the thickness of the sheave main-body part 15 can be made thin and lightweight, the productivity of a sheave also improves.

  Thus, the strength required by the sheave main body 15 is ensured, and the friction member 16 can secure the same rubber thickness as that of the conventional sheave, so that it can obtain the same level of handrail driving force as the conventional sheave. Can do. In FIG. 4, the sheave main body 15 is composed of three sheet metal members 15a, 15b, and 15c, but any number of sheets such as two or four can be used.

  In addition, by providing the inlay 17 in the sheave main body 15, the assembly can be facilitated by fitting with the sheave flange 22 attached to the drive shaft 12. Assembling with the sheave flange 22 can be performed by bolting the screw hole machined into the sheave flange 22.

  When the sheave main body 15 is manufactured with a plate thickness of 2.3 mm, the mass of the sheave main body is 4.6 kg, which is 4.4 kg lighter than the mass of 9 kg when the sheave main body is manufactured with a conventional casting. Thus, the diameter and width of the sheave 11 (here, the width of the sheave is the size of the portion to which the friction member is attached, the length of the portion indicated as Lb in the figure, the same applies hereinafter). Thus, the mass is reduced.

  Further, by forming the sheave main body 15 with a sheet metal member, there is no roughness of the cast surface on the outer peripheral surface, and there is no need to cut the outer peripheral surface of the sheave main body. Further, by dividing the sheave main body portion 15 into a plurality of components, it is possible to reduce the size of the component parts, and it is possible to perform molding with a small processing machine, and productivity is improved as compared with integral molding.

Embodiment 2. FIG.
6A and 6B are diagrams showing the configuration of the sheave 11 according to the second embodiment of the present invention. FIG. 6A is a front view, and FIG. 6B is a side view (cross-sectional view). FIG. 6C is an enlarged cross-sectional view of the coupling portion 18.
As shown in FIGS. 6 (a) and 6 (c), the sheet metal members overlap each other at the connecting portions 18 of the plurality of sheet metal members 15a, 15b, 15c, and 15d, thereby serving as a reinforcement. Can be made thinner and lighter, and productivity can be improved.

  Accordingly, the strength required by the sheave main body 15 is ensured, and the friction member 16 has the same rubber thickness as that of the conventional sheave, so that it is possible to obtain the same level of handrail driving force as that of the conventional sheave. . In FIG. 6, the sheave main body 15 is composed of four sheet metal members 15a, 15b, 15c, and 15d, but any number of sheets such as two or three can be used.

  Further, the manufacture of the sheave main body 15 having the shape shown in FIG. 6 can be realized by drawing as in the first embodiment. Also in this case, by providing the inlay 17 in the sheave main body 15, the assembly can be facilitated by fitting with the sheave flange 22 attached to the drive shaft 12. Since other details are the same as those in the first embodiment, the description thereof is omitted here.

  When the sheave main body 15 is manufactured with a thickness of 3.2 mm, the mass of the sheave main body is 5.3 kg, which is 3.7 kg lighter than the mass of 9 kg when the sheave main body is manufactured with a conventional casting. Thus, the diameter and width of the sheave 11 (here, the width of the sheave is the size of the portion to which the friction member is attached, and the length of the portion indicated as Lb in the figure) is the same as the conventional mass. Becomes smaller.

  Further, by forming the sheave main body 15 with a sheet metal member, there is no roughness of the cast surface on the outer peripheral surface, and there is no need to cut the outer peripheral surface of the sheave main body. Further, by dividing the sheave main part into a plurality of parts, the component parts can be made smaller, and molding can be performed with a small processing machine, so that productivity is improved as compared with the case of integral molding.

Embodiment 3 FIG.
7A and 7B are diagrams showing components of the sheave 11 according to Embodiment 3 of the present invention. FIG. 7A is a front view, and FIG. 7B is a side view. A friction member 16 made of a material having a higher friction coefficient than that of iron such as rubber is attached to a flat outer peripheral surface which is a part of a cylinder, and is fixed to other parts using a fixing member 19 such as a rivet or a screw. By combining them, the sheave 11 is configured using three sheet metal members as in FIG.

According to the third embodiment, the sheave 11 is composed of divided members and is combined and integrated at the time of attachment, so that the mass at the time of component attachment is reduced, so that the work load becomes easier.
In addition, since the connecting portion 18 of the plurality of sheet metal members 15a, 15b, and 15c serves as a reinforcement, the sheave main portion 15 can be reduced in thickness and weight, and productivity can be improved.

Accordingly, the strength required by the sheave main body 15 is ensured, and the friction member 16 has the same rubber thickness as that of the conventional sheave, so that it is possible to obtain the same level of handrail driving force as that of the conventional sheave. . Further, in FIG. 7, the sheave main body portion 15 is constituted by three sheet metal members corresponding to the sheet metal members 15b and 15c of FIG. 4 in addition to the sheet metal member 15a. But it is configurable.

  By providing the spigot 17 in the sheave main body 15, the assembly can be facilitated by fitting with the sheave flange 22 attached to the drive shaft 12 as described above. Assembling with the sheave flange 22 can be performed by bolting the screw hole machined into the sheave flange 22.

  When the sheave main body 15 is manufactured with a plate thickness of 2.3 mm, the mass of the sheave main body is 4.6 kg, which is 4.4 kg lighter than the mass of 9 kg when the sheave main body is manufactured with a conventional casting. Thus, the diameter and width of the sheave 11 (here, the width of the sheave is the size of the portion to which the friction member is attached, and the length of the portion indicated as Lb in the figure) is the same as the conventional mass. Becomes smaller.

Further, by forming the sheave main body 15 with a sheet metal member, there is no roughness of the cast surface on the outer peripheral surface, and there is no need to cut the outer peripheral surface of the sheave main body. Furthermore, since the component parts can be reduced by dividing into a plurality of parts, the forming process can be performed with a small processing machine, and the productivity is improved as compared with the integral molding.

Embodiment 4 FIG.
FIG. 8 is an enlarged cross-sectional view showing an outer peripheral portion and a handrail portion of a sheave portion of a handrail drive device for a passenger conveyor according to Embodiment 4 of the present invention.
The sheave main body 15 shown in FIG. 8 is assumed to have the same shape as that in FIG. 4, but the same effect can be obtained with the shape of the second embodiment, that is, the shape shown in FIG. The same effect can be obtained with the shape of the third embodiment, that is, the shape shown in FIG.

In the sheave main portion 15 of FIG. 8, when the friction member 16 such as rubber is attached to the cylindrical handrail winding portion 10a, in addition to the cylindrical outer peripheral surface, both end portions 16a and 16b in the axial direction from the cylindrical surface are also rubbed. It is affixed so as to be covered with rubber which is one of the members.
As described in the drawing, the handrail 10 may move left and right with respect to the sheave 11 depending on the movement state of the handrail, and may come into contact with the sheave 11. According to the fourth embodiment, at this time, the direct contact between the handrail 10 and the sheave main portion 15 can be prevented by the presence of the friction member 16, and the sound generated by the direct contact can be prevented. Can do. Further, the handrail can be prevented from being damaged.

  In addition, as a manufacturing method of the friction member 16 of FIG. 8, it can be manufactured by winding the friction member 16 such as rubber in a soft state excessively by a steaming method and then vulcanizing it, and then shaving it leaving a necessary amount. is there.

Embodiment 5 FIG.
FIG. 9 is a diagram showing an example in Embodiment 5 of the present invention, and is an enlarged sectional view showing only an outer peripheral portion of a sheave portion of a handrail drive device of a passenger conveyor.
In this figure, the sheave main part 15 (a part of the figure) shows an example using the same shape as that of FIG. 4, but the shape of the second embodiment, that is, the shape shown in FIG. The same effect can be obtained by the shape of the third embodiment, that is, the shape shown in FIG.

In the sheave main portion 15 of FIG. 9, when the friction member 16 such as rubber is attached to the cylindrical handrail winding portion 10a, the friction member 16 has a cylindrical outer peripheral portion and axial end portions 16a and 16b (see FIG. 8). In addition, it is affixed to the entire inner and outer periphery up to the back surface of the handrail winding portion 10a so as to cover the entire handrail winding portion 10a.
According to the fourth embodiment, it is possible to prevent the friction member 16 such as rubber from peeling from the sheave main body 15.

  In the above description, in all of the embodiments, the plurality of fan-shaped sheet metal members have been described as having the same shape. However, the present invention is not limited to this, and the fan-shaped central angles may be all different combinations. Even if, for example, two combinations of the same shape are used, as a result of the combination, the same effect can be obtained as long as the combination is a cylindrical shape as a whole (a combination having a central angle of 360 degrees as a whole). Further, within the scope of the present invention, the present invention can be freely combined with each other, and each embodiment can be appropriately modified or omitted.

  1 body frame, balustrade, 3 steps, 4 upper step sprocket, 5 lower step sprocket, 6 step chain, 7 drive sprocket, 8 drive machine, 9 drive chain, 10 handrail, 10a handrail winding part, 11 sheave, 12 drive Shaft, 13 Holder, 14 Pressure roller, 15 Sheave main part, 15a, 15b, 15c, 15d Sheave main part divided parts, 16 Friction member (sheave rubber), 17 Inlay, 18 Coupling part, 19 Fixing member, 20 Driving force, 21 Pressure, 22 Sheave flange, Lb Sheave width.

Claims (6)

A sheave having a handrail winding part for winding an endless handrail provided in a balustrade part of a passenger conveyor;
A pressing portion for pressing the handrail against the sheave;
A handrail drive device for a passenger conveyor comprising:
The sheave is
A cylindrical sheave main portion configured by combining a plurality of fan-shaped sheet metal members formed by bending the outer circumferential arc portion;
A friction member mounted on the handrail winding portion;
A handrail drive device for a passenger conveyor. The handrail winding part;
A disk part connected to the drive shaft of the sheave and being a part of the fan-shaped sheet metal member;
The handrail drive device for a passenger conveyor according to claim 1, wherein is integrally molded. The fan-shaped sheet metal member is
The outer peripheral abutting part formed by being continuously bent to the outer peripheral arc part is provided, and the outer peripheral abutting part is fixed to the outer peripheral abutting part of the adjacent fan-shaped sheet metal member. The handrail drive device for passenger conveyors of 2. The fan-shaped sheet metal member is
The plate-like convex part cut | disconnected from the said outer periphery circular arc part and bend | folded and formed, This plate-like convex part is overlapped and fixed with a part of said adjacent fan-shaped sheet metal member, or it is characterized by the above-mentioned. The handrail drive device for passenger conveyors according to claim 2.   The handrail drive device for a passenger conveyor according to any one of claims 1 to 4, wherein the sheave main portion includes an outer peripheral side surface covered with the friction member.   The handrail drive device for a passenger conveyor according to any one of claims 1 to 4, wherein the sheave main portion includes an outer peripheral side surface covered with the friction member and a rear surface thereof.

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