JPWO2019171497A1 - Steps for passenger conveyor with lock mechanism - Google Patents

Abstract

(EN) Provided is a passenger conveyor step with a lock mechanism capable of preventing the bolt from falling off the step shaft even when the bolt is not tightened. The step for a passenger conveyor with a lock mechanism according to the present invention is fixed to a bracket (9) and is attached to the bracket (9) via an upper base (15) facing the step shaft (14) from above and a rotating shaft. , A lower part that can be fixed to the upper base (15) with bolts (23) while rotating so as to face the step shaft (14) from below and sandwiching the step shaft (14) with the upper base (15) A latch member attached to the base (16) and the upper base (15) and hooked on the lower base (16) with the step shaft (14) sandwiched between the upper base (15) and the lower base (16). And (17).

Description

  This invention relates to passenger conveyor steps.

  The passenger conveyor step is attached to the step chain, for example, by sandwiching the step shaft with a mouthpiece. The base is fixed to the step shaft with a bolt, for example. As a passenger conveyor step, for example, there is one described in Patent Document 1 below.

Japanese Unexamined Patent Publication No. 2015-147666

  For example, if the bolts are forgotten to be tightened during installation work, or if the bolts are loosely tightened, the step may fall off the step shaft.

  The present invention has been made to solve the above problems. An object of the invention is to provide a step for a passenger conveyor with a lock mechanism that can prevent the bolt from falling off the step shaft even when the bolt is not tightened.

  The step for the passenger conveyor with the lock mechanism according to the present invention is fixed to the bracket, is attached to the bracket through the upper shaft which faces the step shaft from above and the rotating shaft, and rotates so as to face the step shaft from below. Attached to the upper base and the lower base that can be fixed to the upper base with bolts while the step shaft is sandwiched between the upper base and the lower base with the step shaft being sandwiched between the upper base and the lower base. And a latch member hooked on the base.

  According to the present invention, the latch member is attached to the upper base and is hooked on the lower base with the step shaft being sandwiched between the upper base and the lower base. Therefore, it is possible to prevent the step from falling off the step shaft even when the bolt is not tightened.

It is a perspective view which shows an example of an escalator. FIG. 5 is a side view of steps in the first embodiment. FIG. 5 is a top view of steps in the first embodiment. FIG. 5 is a first side view showing an enlarged main part of steps in the first embodiment. FIG. 6 is a second side view showing an enlarged main part of steps in the first embodiment. FIG. 7 is a third side view showing an enlarged main part of steps in the first embodiment. FIG. 9 is a fourth side view showing an enlarged main part of steps in the first embodiment.

  Embodiments will be described below with reference to the accompanying drawings. In each drawing, the same or corresponding parts are designated by the same reference numerals. The overlapping description will be simplified or omitted as appropriate.

  In the embodiments, an escalator will be specifically described as an example of a passenger conveyor. Description of other passenger conveyors such as moving walkways will be omitted.

Embodiment 1.
FIG. 1 is a perspective view showing an example of an escalator.

  As shown in FIG. 1, the escalator includes a truss 1. The truss 1 is laid between the upper floor and the lower floor. Inside the truss 1, a drive device 2, a main sprocket 3, a lower sprocket 4 and an unillustrated upper sprocket are provided. The drive device 2, the main sprocket 3 and the upper sprocket are arranged in the upper machine room. The lower sprocket 4 is arranged in the lower machine room. The upper sprocket is provided coaxially with the main sprocket 3.

  The drive device 2 includes a speed reducer sprocket 2a. An endless drive chain 5 is wound around the speed reducer sprocket 2 a and the main sprocket 3. An endless step chain 6 is wound around the upper sprocket and the lower sprocket 4.

  The escalator comprises a plurality of steps 7 and handrails 8. The plurality of steps 7 are connected by the step chain 6 so as to line up from the lower floor to the upper floor. The handrail 8 is formed in an endless shape. The handrails 8 are provided on both left and right sides of the step 7. The step 7 and the handrail 8 cyclically move between the upper floor and the lower floor when the drive device 2 operates.

  FIG. 2 is a side view of steps in the first embodiment.

  Step 7 includes a pair of brackets 9, a pair of rollers 10, a tread 11, a riser 12 and a pair of bases 13.

  The roller 10 is attached to the bracket 9 via a shaft (not shown), for example. The roller 10 travels on a rail provided inside the truss 1.

  The tread 11 is supported by the bracket 9 from below. The riser 12 is provided so as to hang down from one end of the tread 11 in the front-rear direction. The base 13 is provided below the other end of the tread 11 in the front-rear direction. That is, the base 13 is located below the end of the tread 11 on the side opposite to the riser 12 side in the front-back direction.

  The base 13 is detachably attached to the step shaft 14. The step shaft 14 is bridged between the pair of step chains 6 along the left-right direction.

  A pair of attaching / detaching holes 11 a are formed in the tread 11. The attachment / detachment hole 11a penetrates from the upper surface to the lower surface of the tread 11. The attachment / detachment hole 11 a is located above the base 13. The base 13 is attached / detached using a tool inserted through the attachment / detachment hole 11a.

  FIG. 3 is a top view of steps in the first embodiment.

  The lower side in FIG. 3 is one end side of the tread 11 in the front-back direction. The upper side in FIG. 3 is the other end side in the front-back direction of the tread 11.

  The attachment / detachment hole 11a is located near the other end of the tread 11 in the front-rear direction. One attachment / detachment hole 11a is located near the left end of the tread 11. The other attachment / detachment hole 11a is located near the right end of the tread 11.

  FIG. 4 is a first side view showing an enlarged main part of steps in the first embodiment.

  FIG. 4 shows a state in which the base 13 is fixed to the step shaft 14.

  The base 13 includes an upper base 15, a lower base 16 and a latch member 17.

  The upper base 15 is fixed to the bracket 9. The upper base 15 has an upper curved portion 18 and an upper protruding portion 19. The upper curved portion 18 faces the step shaft 14 from above. The upper protruding portion 19 protrudes from the upper curved portion 18 toward the side opposite to the riser 12 side in the front-back direction of the tread 11.

  The upper protrusion 19 has a recess 19a and a first mounting hole 19b. The recess 19a is formed so as to reach a certain depth from the upper surface of the upper protrusion 19. The first mounting hole 19b penetrates from the bottom surface of the recess 19a to the lower surface of the upper protruding portion 19. The width of the recess 19a is larger than the width of the first mounting hole 19b.

  The lower ferrule 16 is attached to the bracket 9 via a rotary shaft extending along the longitudinal direction of the step shaft 14. The lower ferrule 16 has a lower curved portion 20, a lower protruding portion 21, and a ferrule lever 22. The lower curved portion 20 faces the step shaft 14 from below. The lower protruding portion 21 protrudes from the lower curved portion 20 toward the side opposite to the riser 12 side in the front-back direction of the tread 11. The lower protrusion 21 has, for example, a shape in which the lower surface is inclined with respect to the upper surface such that the thickness in the up-down direction becomes smaller with increasing distance from the lower curved portion 20.

  A second mounting hole 21a is formed in the lower protrusion 21. The second mounting hole 21a penetrates from the upper surface to the lower surface of the lower protruding portion 21. The width of the second mounting hole 21a is equal to the width of the first mounting hole 19b.

  A protrusion 21b is formed on the lower surface of the lower protrusion 21. The protrusion 21b protrudes downward from an end of the lower surface of the lower protrusion 21 opposite to the riser 12 side in the front-rear direction of the tread 11. The angle of the tip of the protrusion 21b in the viewpoint of FIG. 4 is, for example, a right angle.

  In the base 13, the bolt 23 is attached to the first attachment hole 19b and the second attachment hole 21a from above in a state where the step shaft 14 is sandwiched between the upper curved portion 18 and the lower curved portion 20, and thus the step is performed. It is fixed to the shaft 14. The width of the recess 19a is formed so that the head of the bolt 23 can be inserted therein.

  The latch member 17 is arranged, for example, on the side opposite to the riser 12 side in the front-back direction of the tread 11 with respect to the mouthpiece 13. The upper end of the latch member 17 is attached to the upper protrusion 19 via a hinge 24. A spring 25 is provided around the hinge 24. The spring 25 is, for example, a torsion spring.

  A release lever portion 26 is formed at the upper end of the latch member 17. The release lever portion 26 projects laterally toward the riser 12 side in the front-back direction of the tread 11. The tip of the release lever is located inside the recess 19a.

  A hook-shaped portion 27 is formed at the lower end of the latch member 17. The hook 27 projects toward the riser 12 side in the front-back direction of the tread 11. The angle inside the hook-shaped portion 27 from the viewpoint of FIG. 4 is, for example, a right angle.

  An inclined portion 28 is formed at the lower end of the latch member 17 and continues from the tip of the hook-shaped portion 27. The inclined portion 28 is inclined so that the portion farther from the tip of the hook portion 27 is located on the side opposite to the riser 12 side in the front-back direction of the tread 11.

  The latch member 17 is rotatable around the hinge 24. The spring 25 applies a force to the latch member 17 in the clockwise direction in the viewpoint of FIG. That is, a force is exerted on the latch member 17 in the direction in which it is pressed against the upper protruding portion 19. Due to this force, the tip of the hook-shaped portion 27 is caught by the protrusion 21b of the lower protruding portion 21 in a state where the mouthpiece 13 is closed. The base 13 is maintained in the closed state regardless of whether or not the bolt 23 is tightened by the hook-shaped portion 27 being caught by the protrusion 21b of the lower protruding portion 21. As described above, step 7 in the first embodiment has a lock mechanism that locks the base 13.

  FIG. 5 is a second side view showing an enlarged main part of steps in the first embodiment.

  FIG. 5 shows how the bolt 23 is attached and detached.

  The bolt 23 is attached / detached using a tool 29 inserted from the top of the tread 11 through the attachment / detachment hole 11a. The tool 29 is, for example, a hexagon wrench or the like.

  When the tool 29 is inserted into the recess 19a during the attachment / detachment work of the bolt 23, the release lever portion 26 is pushed downward by the tool 29. When the release lever portion 26 is pushed downward, the latch member 17 rotates about the hinge 24 in the counterclockwise direction in the viewpoint of FIG. That is, when the release lever portion 26 is pushed downward, the latch member 17 moves so that the hook-shaped portion 27 is disengaged from the protrusion 21b of the lower protruding portion 21. In this way, when the bolt 23 is attached and detached, the lock of the base 13 is released.

  FIG. 6 is a third side view showing an enlarged main part of steps in the first embodiment. FIG. 7 is a fourth side view showing an enlarged main part of steps in the first embodiment.

  6 and 7 show how the step 7 is attached to the step shaft 14.

  The step 7 is attached by lowering it from above the step shaft 14 with the mouthpiece 13 open. At this time, as shown in FIG. 6, the base lever 22 is pushed up by the step shaft 14. When the mouthpiece lever 22 is pushed up, the lower mouthpiece 16 rotates so as to face the step shaft 14 from below.

  As the lower ferrule 16 rotates, the inclined portion 28 of the latch member 17 is pushed upward by the lower protruding portion 21, as shown in FIG. 7. When the inclined portion 28 is pushed upward, the latch member 17 rotates about the hinge 24 in the counterclockwise direction in the viewpoint of FIG. 7. That is, when the inclined portion 28 is pushed upward, the latch member 17 moves so that the hook-shaped portion 27 is caught by the protrusion 21b of the lower protruding portion 21. In this way, the base 13 is automatically locked when the step 7 is attached.

  According to the first embodiment, the step for the passenger conveyor with the lock mechanism includes the upper base 15, the lower base 16 and the latch member 17. The upper base 15 is fixed to the bracket 9 and faces the step shaft 14 from above. The lower ferrule 16 is attached to the bracket 9 via a rotating shaft, and is rotated so as to face the step shaft 14 from below and the step shaft 14 is sandwiched between the lower ferrule 16 and the upper ferrule 15. It can be fixed with. The latch member 17 is attached to the upper base 15 and hooks on the lower base 16 with the step shaft 14 sandwiched between the upper base 15 and the lower base 16 regardless of whether or not the bolt 23 is tightened. . Therefore, even when the bolt 23 is not tightened, the step 7 can be prevented from falling off the step shaft 14. As a result, damage inside the truss 1 and occurrence of user disaster can be prevented.

  According to the first embodiment, at the upper end portion of the latch member 17, the release lever portion 26 that laterally protrudes inside the recess 19a is formed. At the lower end portion of the latch member 17, a hook-shaped portion 27 that is hooked on the lower protruding portion 21 is formed. When the release lever portion 26 is pushed downward, the latch member 17 moves so that the hook-shaped portion 27 is disengaged from the lower protruding portion 21. Therefore, when the bolt 23 is loosened and the step 7 is removed, the lock of the base 13 can be released without performing a special releasing operation.

  According to the first embodiment, for example, the lower protrusion 21 is formed such that the lower surface is inclined with respect to the upper surface such that the lower protrusion 21 has a smaller thickness in the vertical direction as the distance from the lower curved portion 20 increases. A protrusion 21 b that receives the hook-shaped portion 27 of the latch member 17 is formed on the lower surface of the lower protruding portion 21. The protrusion 21b is formed, for example, at a right angle at its tip. In the latch member 17, for example, the inside angle of the hook-shaped portion 27 is formed to be a right angle. In this case, it is possible to prevent the latch member 17 from coming off from the lower protrusion 21 more easily than when the angle of the tip of the protrusion 21b and the angle of the inside of the hook 27 are acute. Further, in this case, it is possible to prevent the latch member 17 from being easily disengaged from the lower protrusion 21 as compared with the case where the angle of the tip of the protrusion 21b and the angle of the inside of the hook 27 are obtuse.

  According to the first embodiment, when the lower protrusion 16 pushes the inclined portion 28 upward when the lower ferrule 16 rotates so as to face the step shaft 14 from below, the hook-shaped portion is formed. 27 moves so as to be caught by the lower protruding portion 21. In this case, the base 13 can be automatically locked when attaching the step 7.

  INDUSTRIAL APPLICABILITY The present invention can be used for a passenger conveyor in which steps are attached to and detached from a step shaft.

1 truss 2 drive device 2a speed reducer sprocket 3 main sprocket 4 lower sprocket 5 drive chain 6 step chain 7 step 8 handrail 9 bracket 10 roller 11 step plate 11a attachment / detachment hole 12 riser 13 cap 14 step shaft 15 upper cap 16 lower cap 17 latch member 18 Upper Curved Part 19 Upper Projected Part 19a Recessed 19b First Mounting Hole 20 Lower Curved Part 21 Lower Projected Part 21a Second Mounting Hole 21b Projection 22 Base Lever 23 Bolt 24 Hinge 25 Spring 26 Release Lever Part 27 Hooked Part 28 Inclined part 29 Tool

Claims (4)

An upper base fixed to the bracket and facing the step axis from above,
Attached to the bracket via the rotating shaft, the lower base that can be fixed to the upper base with bolts while rotating so as to face the step shaft from below and sandwiching the step shaft between the upper base and the upper base,
A latch member attached to the upper base and hooked on the lower base in a state where a step shaft is sandwiched between the upper base and the lower base,
Step for passenger conveyor with lock mechanism equipped with. The upper base is
An upper curved portion facing the step axis from above,
An upper protruding portion protruding from the upper curved portion and having a recess extending from the upper surface to a certain depth and a first mounting hole penetrating from the bottom surface to the lower surface of the recess;
Have
The lower base is
A lower curved portion facing the step axis from below,
A lower protrusion that protrudes from the lower curved portion and has a second mounting hole that penetrates from the upper surface to the lower surface;
Have
The bolt is attached to the first mounting hole and the second mounting hole from above with the step shaft being sandwiched between the upper curved portion and the lower curved portion,
A release lever portion that protrudes inside the recess is formed at the upper end portion of the latch member,
On the lower end of the latch member, a hook-shaped portion that is hooked on the lower protrusion is formed.
The step for a passenger conveyor with a lock mechanism according to claim 1, wherein the latch member moves so that the hook-shaped portion is disengaged from the lower protruding portion when the release lever portion is pushed downward. The lower protrusion is formed such that the lower surface is inclined with respect to the upper surface such that the thickness in the vertical direction becomes smaller as the distance from the lower curved portion increases,
A protrusion for receiving the hook-shaped portion of the latch member is formed on a lower surface of the lower protrusion,
The protrusion is formed with a right angle at the tip,
The step for a passenger conveyer with a lock mechanism according to claim 2, wherein the latch member is formed such that an angle inside the hook-shaped portion is formed at a right angle. An inclined portion continuous from the tip of the hook-shaped portion is formed at the lower end of the latch member,
In the latch member, when the lower protruding portion pushes the inclined portion upward when the lower ferrule rotates so as to face the step shaft from below, the hook-shaped portion is hooked on the lower protruding portion. 4. The step for a passenger conveyor with a lock mechanism according to claim 2 or 3, wherein the step is performed as follows.

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