passenger conveyor

Abstract

To provide a passenger conveyor capable of more stable operation. [Solution] The passenger conveyor comprises a handrail 7, a drive roller, and a handrail guide 18. The handrail 7 includes a canvas 14 and a main body 12 that is an extrusion molded body of thermoplastic elastomer and has the canvas 14 as a lining. The drive roller contacts the canvas 14 to move the handrail 7 in a circular motion. The handrail guide 18 contacts the canvas 14 to guide the movement of the handrail 7 in the longitudinal direction. The handrail guide 18 is made of a polymer alloy of polyethylene and polyacetal. The polymer alloy does not contain an adhesion inhibitor as an additive.

Description

[Technical Field]

[0001] The present disclosure relates to passenger conveyors. [Background technology]

[0002] Patent Document 1 discloses an example of a passenger conveyor. The passenger conveyor includes circulating steps and balustrade assemblies disposed on both the left and right sides of the steps. The balustrade assemblies include handrails and handrail guides. The handrails move in the same direction and at the same speed as the steps so that passengers can support themselves. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2012-524007 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the passenger conveyor of Patent Document 1, the handrail guide is made of polyethylene. Generally, polyethylene has a low deflection temperature under load, and it may soften due to heat generated by friction with the handrail. In this case, the handrail guide may deform or fall off, which may cause the passenger conveyor to be unable to operate stably.

[0005] The present disclosure relates to solving such problems and provides a passenger conveyor that can operate more stably. [Means for solving the problem]

[0006] The passenger conveyor according to the present disclosure comprises a handrail including a canvas and a main body that is an extrusion molded product of thermoplastic elastomer and has the canvas as a lining, a drive roller that contacts the canvas of the handrail to move the handrail in a circular motion, and a handrail guide that contacts the canvas of the handrail to guide the movement of the handrail in the longitudinal direction, the handrail guide being made of a polymer alloy of polyethylene and polyacetal, and the polymer alloy that forms the handrail guide does not contain any of the following additives: silicone, fluorine compounds, molybdenum disulfide, tungsten disulfide, graphite, polyethylene glycol, or stearate-based compounds. The passenger conveyor according to the present disclosure comprises a handrail including a canvas and a main body that is an extrusion molded product of a thermoplastic elastomer and has the canvas as a lining, a drive roller that contacts the canvas of the handrail to move the handrail in a circular motion, and a handrail guide that contacts the canvas of the handrail to guide the movement of the handrail in the longitudinal direction, the handrail guide being made of a polymer alloy of polyethylene and polyacetal, and the polymer alloy that forms the handrail guide does not contain an adhesion inhibitor as an additive. [Effects of the Invention]

[0007] The passenger conveyor according to the present disclosure enables more stable operation. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a side view of a passenger conveyor according to a first embodiment. [Figure 2] 1 is a side view of a handrail drive unit of a passenger conveyor according to the first embodiment. FIG. [Figure 3] 1 is a cross-sectional view perpendicular to the longitudinal direction of a handrail of a passenger conveyor according to the first embodiment. [Figure 4] 1 is a cross-sectional view perpendicular to the longitudinal direction of a handrail of a passenger conveyor according to the first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following describes embodiments of the subject matter of the present disclosure with reference to the accompanying drawings. In each drawing, identical or corresponding parts are designated by the same reference numerals, and redundant explanations are appropriately simplified or omitted. Note that the subject matter of the present disclosure is not limited to the following embodiments, and any component of the embodiments may be modified or omitted within the scope of the gist of the present disclosure.

[0010] Embodiment 1 FIG. 1 is a side view of a passenger conveyor 1 according to the first embodiment.

[0011] The passenger conveyor 1 is applied to, for example, a building. The passenger conveyor 1 is, for example, an escalator that spans between upper and lower floors of a building. In this case, the passenger conveyor 1 transports passengers between the upper and lower floors. One of the upper and lower floor sides of the passenger conveyor 1 is the departure side where passengers board the passenger conveyor 1. The other of the upper and lower floor sides of the passenger conveyor 1 is the arrival side where passengers disembark from the passenger conveyor 1. The passenger conveyor 1 includes a main frame 2, a drive unit 3, a plurality of steps 4, a pair of balustrades 5, and a control unit 6.

[0012] The main frame 2 is a portion that is long in the front-to-rear direction of the passenger conveyor 1 and supports the structure of the passenger conveyor 1. The main frame 2 is, for example, a truss.

[0013] The drive unit 3 is a device that generates a driving force and includes, for example, a motor. The drive unit 3 is disposed in a machine room provided on the upper floor side of the main frame 2, for example.

[0014] Each step 4 is a device that moves in a circular motion by the driving force generated by the drive unit 3. Each step 4 moves on an outward path from the departure side to the arrival side, and moves on a return path that is lower than the outward path from the arrival side to the departure side. The multiple steps 4 are arranged in a staircase-like pattern on the outward path.

[0015] One balustrade 5 is positioned on the left side of the multiple steps 4. The other balustrade 5 is positioned on the right side of the multiple steps 5. Each balustrade 5 includes a handrail 7, a handrail drive unit 8, and a handrail support unit 9. The handrail 7 is a device that moves in a circular motion on the left or right side of the multiple steps 4. The handrail 7 moves on an outward path from the departure side to the arrival side, and on a return path that is lower than the outward path from the arrival side to the departure side. The handrail 7 turns back at a bend on the arrival side or departure side between the outward and return paths. On the outward path, the handrail 7 moves in the same direction and at the same speed as the multiple steps 4. The handrail 7 is made of a flexible annular member. The handrail drive unit 8 transmits the driving force for the circular motion to the handrail 7. The handrail drive unit 8 moves the handrail 7 in a circular motion in conjunction with the multiple steps 4 using the driving force generated by the drive device 3. The handrail support portion 9 is a portion that supports and guides the handrail 7 that moves in the traveling direction.

[0016] The control device 6 is a device that controls the operation of the passenger conveyor 1. The control device 6 is disposed in a machine room provided on the upper floor side of the main frame 2, for example.

[0017] During normal operation, the passenger conveyor 1 transports passengers who are standing on one of the steps 4 while holding onto one of the handrails 7, for example, by using the driving force generated by the drive unit 3 under the control of the control unit 6. At this time, each step 4 moves in the direction of travel from the departure side to the arrival side on the outbound journey. Each handrail 7 moves in a circular motion at a speed corresponding to the moving speed of each step 4.

[0018] FIG. 2 is a side view of the handrail driving unit 8 of the passenger conveyor 1 according to the first embodiment.

[0019] The handrail driving unit 8 includes a driving roller 10 and a pressure roller 11.

[0020] The drive rollers 10 are rollers that transmit driving force to the handrail 7 by friction drive. The handrail drive unit 8 is equipped with one or more drive rollers 10. The drive rollers 10 contact the back side of the handrail 7. The drive rollers 10 receive driving force generated by the drive device 3 and transmit the driving force to the handrail 7. The drive rollers 10 receive driving force from the drive device 3 via, for example, a chain or belt and a sprocket or pulley.

[0021] The pressure roller 11 is a roller that applies pressure to the handrail 7, pressing it against the drive roller 10. The handrail drive unit 8 is equipped with one or more pressure rollers 11. The pressure roller 11 contacts the handrail 7 from the side opposite the drive roller 10, i.e., from the front side in this example. The pressure roller 11 presses the handrail 7 against the drive roller 10, for example, by elastic force such as a spring, gravity, or other force.

[0022] FIG. 3 is a cross-sectional view perpendicular to the longitudinal direction of the handrail 7 of the passenger conveyor 1 according to the first embodiment. In FIG. 3, a cross section of the handrail 7 at the position of the handrail drive 8 is shown.

[0023] The cross section of the handrail 7 perpendicular to the longitudinal direction is roughly C-shaped. The handrail 7 has a central portion 7a extending longitudinally in the center in the left-right direction, and ear portions 7b folded back from both left and right ends of the central portion 7a to the back side. In the handrail 7, the central portion 7a and the left and right ear portions 7b are formed integrally. In this example, the handrail 7 is made up of a main body portion 12, a surface portion 13, canvas 14, and a tension member 15. The main body portion 12, surface portion 13, and canvas 14 make up the handrail 7, extending from one ear portion 7b to the central portion 7a and the other ear portion 7b.

[0024] The main body 12 is an extrusion molded body formed by extrusion molding of a thermoplastic elastomer, such as a thermoplastic urethane elastomer.

[0025] The surface portion 13 is the portion on the front side of the handrail 7 that passengers can grab. The surface portion 13 forms the decorative surface of the handrail 7. The surface portion 13 may be made of a different material from the main body portion 12, or may be made of the same material as the main body portion 12. The surface portion 13 and the main body portion 12 may be integrated and not separated.

[0026] The canvas 14 is a fabric woven from polyester fibers such as PET (polyethylene terephthalate). The canvas 14 is provided on the back side of the main body 12. The canvas 14 forms the lining of the handrail 7, extending from one edge 7b to the center 7a and the other edge 7b.

[0027] The tension member 15 is, for example, a steel tape or a strand of steel wire. The tension member 15 is contained inside the main body 12. The tension member 15 is arranged in the central portion 7a of the handrail 7 along the longitudinal direction of the handrail 7. The tension member 15 is a member that provides tensile strength to the handrail 7, thereby preventing the handrail 7 from stretching.

[0028] Pressure roller 11 of handrail drive unit 8 contacts surface portion 13 at center portion 7a of handrail 7 and applies pressure to drive roller 10 side to handrail 7. Drive roller 10 of handrail drive unit 8 contacts canvas 14 at center portion 7a of handrail 7 and transmits the driving force for circular movement to handrail 7.

[0029] FIG. 4 is a cross-sectional view perpendicular to the longitudinal direction of the handrail 7 of the passenger conveyor 1 according to the first embodiment. In FIG. 4, a cross section of the handrail support 9 and the handrail 7 is shown.

[0030] The handrail support section 9 includes a support body 16, a guide rail 17, and a handrail guide 18. The support body 16 supports the weight of the circulating handrail 7. The support body 16 is, for example, a panel provided on the left and right sides of the outbound path of the passenger conveyor 1. The guide rail 17 and handrail guide 18 guide the moving handrail 7 in the direction of travel. The handrail 7 circulates along the guide rail 17 and handrail guide 18. In this example, the guide rail 17 is supported by the support body 16. The guide rail 17 is made of, for example, metal. In this example, the guide rail 17 does not directly contact the handrail 7. The guide rail 17 may be integral with the support body 16. The handrail guide 18 is arranged along the guide rail 17. In this example, the handrail guides 18 are arranged separately on the left side of the guide rail 17 and the right side of the guide rail 17. The handrail guides 18 guide the movement of the handrail 7 by sliding in contact with the canvas 14 at the left and right ears 7b of the handrail 7.

[0031] The handrail guide 18 is formed from a polymer alloy of polyethylene (PE) and polyacetal (POM). This polymer alloy does not contain an adhesion inhibitor as an additive. The adhesion inhibitor reduces the coefficient of friction between the formed material and the resin to which it is added. The adhesion inhibitor is an additive that suppresses the progression of adhesive wear of the formed material due to sliding by reducing the coefficient of friction between the formed material and a contacting material to which wear powder from the formed material, generated by sliding, is transferred. Examples of adhesion inhibitors include silicone, fluorine compounds, molybdenum disulfide, tungsten disulfide, graphite, polyethylene glycol, and stearate-based compounds. The polymer alloy forming the handrail guide 18 does not contain such an adhesion inhibitor as an additive. The polymer alloy forming the handrail guide 18 has a sea-island structure with polyacetal as the sea phase and polyethylene as the island phase. The polyethylene used has a higher melt viscosity than polyacetal. Furthermore, the coefficient of dynamic friction between the canvas 14 of the handrail 7 and the polymer alloy forming the handrail guide 18 is equivalent to the coefficient of friction between the polymer alloys forming the handrail guide 18 themselves.

[0032] Next, the materials forming the handrail guide 18 were evaluated. Experimental Examples A, B, and C were conducted using different grades of polyacetal. Experimental Example A evaluated a general-purpose polyacetal containing neither polyethylene nor an adhesion inhibitor. Experimental Example B evaluated polyacetal with an added adhesion inhibitor. In Experimental Example B, low-molecular-weight silicone was used as the adhesion inhibitor added to the polyacetal. Experimental Example C evaluated a polymer alloy of polyethylene and polyacetal. For each experiment, test specimens such as flat plates were prepared. The test specimens were prepared using a DSM Xplore injection molding machine with a tabletop mixer. The mixing conditions for preparing the test specimens were a mixing temperature of 190°C for 2 minutes, and a mold temperature of 70°C. Furthermore, for the evaluation of the handrails used in each experiment, a handrail equipped with a woven PET fiber canvas was used.

[0033] The dynamic friction coefficient for each experimental example was evaluated as follows. A hemispherical plate with a diameter of 10 mm and a flat plate with dimensions of 40 mm wide, 40 mm long, and 2 mm thick was prepared as a test specimen. An injection molding machine (NEX1104-9EG, Nissei Plastic Industrial Co., Ltd.) was used to prepare the hemispherical plate. The injection molding conditions were a mixing temperature of 190°C and a mold temperature of 70°C. The prepared hemispherical plate was attached to an abrasion and friction tester (Tribogear Type: 14FW, Shinto Scientific Co., Ltd.), and the dynamic friction coefficient against the canvas surface of the cut-out handrail and the dynamic friction coefficient against the same material were measured. To measure the dynamic friction coefficient against the canvas surface, the edge of the cut-out handrail was cut off and the center was processed into a flat plate. The dynamic friction coefficient between the canvas surface of the handrail on the processed flat plate and the hemispherical plate was measured. In measuring the coefficient of dynamic friction for the same material, a plate 30 mm wide, 80 mm long, and 2 mm thick was created using the same material as the plate with hemisphere to be measured, and the coefficient of dynamic friction between this plate and the plate with hemisphere was measured.

[0034] In each experimental example, the abrasion resistance was evaluated as follows. A flat plate measuring 30 mm wide, 80 mm long, and 2 mm thick was prepared as a test specimen. The prepared flat plate test specimen was rubbed against the canvas surface of a handrail cut into 10 mm squares using a rubbing tester (Imoto Manufacturing Co., Ltd., Model IMC-071B). The operating conditions for the rubbing tester were a reciprocating operation frequency of 160 times / min, a total number of rubbings of 10,000, an operating distance of 60 mm, a load of 2 kgf, and room temperature (approximately 23°C). The amount of wear was determined as the weight loss of the flat plate test specimen before and after sliding with the rubbing tester, and the amount of wear was measured three times for each experimental example.

[0035] In each experimental example, the flexural modulus and deflection temperature under load were evaluated. The flexural modulus was measured in accordance with ISO 178. The deflection temperature under load was measured in accordance with ISO 75-1 and ISO 75-2.

[0036] For each experimental example, a comprehensive evaluation was performed based on the above measured values. The handrail guide 18 of the passenger conveyor 1 is required to have properties such as retention stability, attachment, wear resistance, low sliding resistance, and movement stability. Retention stability refers to the ability of the handrail guide 18 to be stably attached to the guide rail 17 without coming off. Retention stability is evaluated based on the deflection temperature under load. Attachment refers to the ability of the handrail guide 18 to be attached to the guide rail 17 throughout the entire path of the handrail 7, including bends. Attachment is evaluated based on the flexural modulus. Wear resistance refers to the ability of the handrail guide 18 to experience minimal wear due to sliding with the handrail 7. Wear resistance is evaluated based on the amount of wear before and after sliding using a rubbing tester. Low sliding resistance refers to the ability of the handrail guide 18 to experience low sliding resistance when the handrail 7 moves. Low sliding resistance is evaluated based on the coefficient of dynamic friction with the canvas. Movement stability is the property of maintaining a constant movement speed of the handrail 7. When the handrail guide 18 slides against the canvas 14 lining the handrail 7, wear debris from the handrail guide 18 is transferred to the canvas 14 and, through the canvas 14, to the drive roller 10 that frictionally drives the handrail 7. As a result, as the passenger conveyor 1 continues to operate, the magnitude of friction between the handrail guide 18 and the canvas 14 or drive roller 10 is determined by the coefficient of friction between the polymer alloys that form the handrail guide 18. For this reason, movement stability is evaluated based on the difference between the coefficient of dynamic friction with respect to the canvas 14 and the coefficient of dynamic friction with respect to the same material. A handrail guide 18 that satisfies all of the above required properties is judged to be good in the overall evaluation.

[0037] The results of the above evaluation are shown in Table 1 below.

[0038] [Table 1]

[0039] A sufficiently high deflection temperature under load was obtained in all of Experimental Examples A, B, and C. For comparison, the typical deflection temperature under load of polyethylene is around 40 to 50°C. If the deflection temperature under load is low, as is the case with polyethylene, there is a possibility that the handrail guide 18 will fall off the guide rail 17 due to the temperature rise caused by friction during sliding. On the other hand, a sufficiently high deflection temperature under load reduces the possibility that the handrail guide 18 will fall off the guide rail 17 due to the temperature rise caused by friction during sliding. For this reason, it can be determined that Experimental Examples A, B, and C all have good retention stability.

[0040] A sufficiently low bending modulus was obtained in all of Experimental Examples A, B, and C. A sufficiently low bending modulus makes it possible to easily attach the handrail guide 18 to the guide rail 17 over the entire travel path of the handrail 7, including the bends. For this reason, all of Experimental Examples A, B, and C can be judged to be good in terms of ease of attachment.

[0041] A relatively large amount of wear was observed in Experimental Example A. PET canvas is harder than polyacetal, and generally, friction between resins leads to increased adhesion. For this reason, Experimental Example A is deemed to have poor wear resistance. On the other hand, Experimental Examples B and C achieved sufficiently small amounts of wear. In Experimental Example B, the adhesion inhibitor reduced the friction coefficient between the test specimen and the canvas to which wear debris from the test specimen transferred during sliding, thereby suppressing the progression of adhesive wear. In Experimental Example C, where no adhesion inhibitor was used, the progression of adhesive wear was suppressed by a different mechanism than in Experimental Example B, where an adhesion inhibitor was used. In the polymer alloy of Experimental Example C, polyethylene is dispersed in polyacetal using a sea-island structure. Because polyethylene has a higher melt viscosity than polyacetal, the polyethylene in the test specimen acts as a fulcrum at the sliding interface, even during sliding with elevated temperatures, reducing the true contact area between the test specimen and the canvas. In this way, in Experimental Example C, the progress of adhesive wear is suppressed by reducing the true contact area. With sufficiently small wear amounts and sufficient wear resistance as in Experimental Examples B and C, wear on the handrail guide 18 due to sliding with the handrail 7 is suppressed, allowing the passenger conveyor 1 to operate stably for a long period of time. For this reason, Experimental Examples B and C can be judged to be good in terms of wear resistance.

[0042] A sufficiently low value was obtained as the coefficient of dynamic friction against the canvas in all of Experimental Examples A, B, and C. A sufficiently low coefficient of dynamic friction against the canvas means that the sliding resistance between the handrail 7 and the handrail guide 18 when it moves is sufficiently small. For this reason, all of Experimental Examples A, B, and C can be judged to be good in terms of low sliding resistance.

[0043] In Experimental Examples A and C, the kinetic friction coefficients for the same material were equivalent to those for canvas. In Experimental Example A, the kinetic friction coefficient for canvas was 0.12, while the kinetic friction coefficient for the same material was 0.15, a difference of only about 20%. In particular, in Experimental Example C, the kinetic friction coefficient for canvas was 0.14, while the kinetic friction coefficient for the same material was 0.14, a similar value, consistent to within two significant digits. As a result, even if wear debris is transferred to the canvas and drive roller, there is no significant change in the driving force transmitted by friction from the drive roller or the magnitude of the sliding resistance between the canvas and the drive roller. Because the kinetic friction coefficient for canvas is equivalent to that for the same material, there is no significant change in the driving force and sliding resistance driving the handrail 7 during operation of the passenger conveyor 1, and the movement speed of the handrail 7 is maintained stable. For this reason, Experimental Examples A and C can be judged to have good movement stability. On the other hand, in Experimental Example B, the dynamic friction coefficient against canvas was 0.12, while the dynamic friction coefficient against the same material was 0.05, a difference of about two times. When wear debris containing adhesion inhibitors, which can also act as solid lubricants, is transferred to the canvas and drive roller, the driving force transmitted by friction from the drive roller can be significantly reduced. For this reason, Experimental Example B is judged to have poor movement stability.

[0044] As described above, experimental example A is good in terms of movement stability, etc., but not good in terms of wear resistance, and is therefore judged to be not good overall. Furthermore, experimental example B is good in terms of wear resistance, etc., but not good in terms of movement stability due to the action of the adhesion inhibitor, and is therefore judged to be not good overall. On the other hand, experimental example C is good in all of the properties required of the handrail guide 18, including wear resistance and movement stability, and is therefore judged to be good overall.

[0045] In the passenger conveyor 1 according to the first embodiment, the handrail guide 18 is formed from a polymer alloy of polyethylene and polyacetal that does not contain an adhesion inhibitor, as in Experimental Example C. In this case, the handrail guide 18 exhibits good properties in terms of retention stability, attachment ability, abrasion resistance, low sliding resistance, and movement stability, enabling the passenger conveyor 1 to operate stably over a long period of time. Furthermore, compared to when a polyamide such as nylon is used for the handrail guide, a handrail guide 18 that uses a polymer alloy of polyethylene and polyacetal exhibits better properties in terms of low sliding resistance, abrasion resistance, etc.

[0046] Furthermore, the coefficient of dynamic friction between the canvas 14 of the handrail 7 and the polymer alloy that forms the handrail guide 18 is equivalent to the coefficient of friction between the polymer alloys that form the handrail guide 18. As a result, even if wear debris from the handrail guide 18 is transferred to the canvas 14 and drive roller 10, there are no significant changes in the driving force and sliding resistance that drive the handrail 7 throughout the operation of the passenger conveyor 1, and the moving speed of the handrail 7 is maintained stable.

[0047] Furthermore, the polymer alloy that forms the handrail guide 18 has a sea-island structure with polyacetal as the sea phase and polyethylene as the island phase. This phase structure allows the polyethylene in the polymer alloy to serve as a fulcrum at the sliding interface, even during sliding that involves temperature increases, reducing the actual contact area between the handrail guide 18 and the canvas 14. This increases the wear resistance of the handrail guide 18 without the need for an adhesion inhibitor, which could potentially impair movement stability due to wear debris from the handrail guide 18.

[0048] The passenger conveyor 1 may be a passenger conveyor in which the steps 4 are not arranged in a stepped manner on the outbound path. The passenger conveyor 1 may be either a horizontal type or an inclined type passenger conveyor.

[0049] To summarize the above explanation, possible configurations of the technology according to the present disclosure include the configurations listed below as appendices. (Appendix 1) A handrail including a canvas and a main body that is an extrusion molded body of a thermoplastic elastomer and has the canvas as a lining; A drive roller that contacts the canvas of the handrail and moves the handrail in a circular motion; A handrail guide that contacts the canvas of the handrail and guides movement of the handrail in the longitudinal direction; Equipped with The handrail guide is made of a polymer alloy of polyethylene and polyacetal, The polymer alloy forming the handrail guide does not contain any of silicone, fluorine compounds, molybdenum disulfide, tungsten disulfide, graphite, polyethylene glycol, and stearate-based compounds as additives. Passenger conveyor. (Appendix 2) A handrail including a canvas and a main body that is an extrusion molded body of a thermoplastic elastomer and has the canvas as a lining; A drive roller that contacts the canvas of the handrail and moves the handrail in a circular motion; A handrail guide that contacts the canvas of the handrail and guides movement of the handrail in the longitudinal direction; Equipped with The handrail guide is made of a polymer alloy of polyethylene and polyacetal, The polymer alloy forming the handrail guide does not contain an adhesion inhibitor as an additive; Passenger conveyor. (Appendix 3) The dynamic friction coefficient between the canvas of the handrail and the polymer alloy forming the handrail guide is equivalent to the friction coefficient between the polymer alloys forming the handrail guide. A passenger conveyor as described in Appendix 1 or Appendix 2. (Appendix 4) The polymer alloy forming the handrail guide has a sea-island structure in which polyacetal is a sea phase and polyethylene is an island phase. 1. A passenger conveyor as described in any one of Annexes 1 to 3. [Explanation of symbols]

[0050] REFERENCE SIGNS LIST 1 passenger conveyor, 2 main frame, 3 drive unit, 4 step, 5 balustrade, 6 control unit, 7 handrail, 7a center portion, 7b ear portion, 8 handrail drive unit, 9 handrail support portion, 10 drive roller, 11 pressure roller, 12 main body portion, 13 surface portion, 14 canvas, 15 tension body, 16 support, 17 guide rail, 18 handrail guide

Claims

1. A handrail including a canvas and a main body that is an extrusion molded body of a thermoplastic elastomer and has the canvas as a lining; A drive roller that contacts the canvas of the handrail and moves the handrail in a circular motion; A handrail guide that contacts the canvas of the handrail and guides movement of the handrail in the longitudinal direction; Equipped with The handrail guide is made of a polymer alloy of polyethylene and polyacetal, The polymer alloy forming the handrail guide does not contain any of silicone, fluorine compounds, molybdenum disulfide, tungsten disulfide, graphite, polyethylene glycol, and stearate-based compounds as additives. Passenger conveyor.

2. A handrail including a canvas and a main body that is an extrusion molded body of a thermoplastic elastomer and has the canvas as a lining; A drive roller that contacts the canvas of the handrail and moves the handrail in a circular motion; A handrail guide that contacts the canvas of the handrail and guides movement of the handrail in the longitudinal direction; Equipped with The handrail guide is made of a polymer alloy of polyethylene and polyacetal, The polymer alloy forming the handrail guide does not contain an adhesion inhibitor as an additive; Passenger conveyor.

3. The coefficient of dynamic friction between the canvas of the handrail and the polymer alloy forming the handrail guide is equivalent to the coefficient of friction between the polymer alloys forming the handrail guide. A passenger conveyor according to claim 1 or 2.

4. The polymer alloy forming the handrail guide has a sea-island structure in which polyacetal is a sea phase and polyethylene is an island phase. A passenger conveyor according to claim 1 or 2.

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