JP2007197107A - Object movement prevention mechanism and passenger conveyor tread with the same - Google Patents

Abstract

An object of the present invention is to provide an object movement prevention mechanism that can be easily attached and detached, and a tread of a passenger conveyor equipped with the mechanism.
In the present invention, the axial movement of an object (4A, 4B) such as a shaft support member fitted on a shaft (3) is formed in a C shape mounted in an annular groove 9 formed on the shaft surface. In the object movement prevention mechanism configured to be blocked by the formed annular locking device 10, the annular locking device is formed of an elastic body having knobs 12, 12A, 12B protruding to the outer periphery.
By providing such knobs 12, 12 </ b> A, 12 </ b> B on the annular locking tool 10, it is possible to work by grasping the knob when attaching to and detaching from the shaft (3), so it is easy even in a narrow area. Can work on.
[Selection] Figure 2

Description

  The present invention relates to an object movement prevention mechanism and a tread of a passenger conveyor equipped with the same, and in particular, an axial movement of an object such as a shaft support member fitted on a shaft is fitted in an annular groove formed on the shaft surface. The present invention relates to an object movement prevention mechanism configured to be blocked by an annular locking tool formed in a C-shape and a passenger conveyor tread having the same.

  Object movement configured to prevent axial movement of an object such as a shaft support member fitted on the shaft by an annular locking tool formed in a C-shape fitted in an annular groove formed on the shaft surface. The prevention mechanism is already known as shown in Patent Document 1, for example.

Japanese Utility Model Publication No. 57-91767 (FIGS. 4 and 5)

  The above-mentioned conventional object movement prevention mechanism is difficult to attach and detach when attaching or detaching the annular locking tool to or from the shaft when the shaft support member for preventing the movement is mounted in a narrow area. Yes, especially when removing the annular locking device once mounted on the shaft, the C-shaped end portion of the annular locking device must be searched for, and the end portion must be lifted and removed. There was a problem that was extremely troublesome.

  An object of the present invention is to provide an object movement preventing mechanism that can be easily attached and detached, and a passenger conveyor tread having the same.

  In order to achieve the above-mentioned object, the present invention provides an annular locking formed in a C-shape in which an axial movement of an object such as a shaft support member fitted on a shaft is mounted in an annular groove formed on the shaft surface. In the object movement prevention mechanism configured to be blocked by a tool, the annular locking tool is formed of an elastic body having a knob protruding to the outer periphery.

  In this way, by providing a knob protruding on the outer periphery of the annular locking tool, when attaching to and detaching from the shaft, it is possible to work by grasping the knob, so that the work can be easily performed even in a narrow area. be able to.

  As described above, according to the present invention, it is possible to obtain an object movement prevention mechanism that can be easily attached and detached, and a footboard of a passenger conveyor equipped with the mechanism.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a passenger conditioned air tread equipped with an object movement prevention mechanism according to the present invention will be described below based on a movement prevention mechanism of a shaft support member mounted on an axle of a escalator step shown in FIGS.

  The escalator step 1 is provided so as to straddle the main shaft 3 that rotatably supports the wheels 2A and 2B at both ends, the shaft supporting members 4A and 4B fitted to the main shaft 3, and the shaft supporting members 4A and 4B. Bracket 5, a passenger mounting portion 6 fixed to the bracket 5, and a pair of rear wheels 7 </ b> A and 7 </ b> B fixed to the bracket 5. An endless tread chain (not shown) is connected to and driven by the chain engaging portions 8A and 8B.

  The main shaft 3 has a small diameter portion 3A on both sides and a large diameter portion 3B on an intermediate portion. The shaft supporting members 4A and 4B are fitted from the small diameter portions 3A on both sides and positioned by the large diameter portions 3B. An annular groove 9 concentric with the main shaft 3 is formed in the small-diameter portion 3A at the position where the shaft support members 4A and 4B are positioned, and an annular locking tool 10 is fitted into the annular groove 9 so that the shaft Displacement in the axial direction of the support members 4A and 4B is prevented.

  The annular locking device 10 is formed of a wire material which is an elastic body and is formed in a C shape, and has a diameter larger than the depth of the annular groove 9, preferably a circle having a diameter twice as large as the groove depth. It has a cross section. Then, on both ends of the C-shaped annular locking tool 10, mounting guide portions 11 A and 11 B wound toward the outside of the annular groove 9 are formed so that the C-shaped opening side is widened toward the end. Yes. Furthermore, a knob 12 formed by being wound toward the outside of the annular groove 9 is formed at a position equidistant from the mounting guide portions 11A and 11B.

  As described above, since the knob 12 is formed on the annular locking tool 10, when the spindle 3 is attached to or detached from the annular groove 9, the knob 12 can be held and the attachment work is facilitated. And since the fitting position of the annular locking tool 10 of the step 1 is a narrow region when it is incorporated in the escalator, the attachment / detachment work must be carried out by hand, but with the knob 12, the attachment guide 11 </ b> A. , 11B can be easily attached to the annular groove 9. Further, since the knob 12 protrudes greatly to the outside of the annular groove 9, the removal work of the annular locking tool 10 can easily find the knob 12 by hand search, and thereafter, just pulling with the knob 12. It can be easily removed. At the time of removing the annular locking device 10, the annular locking device 10 can be easily removed by hooking the tip of a tool such as a hook into the engagement hole formed by the winding of the knob 12 and pulling it as it is. , Work in a narrow area can be facilitated.

  FIG. 4 is a modification of the annular locking device 10 shown in FIG. 3, and a plurality (two) of knobs 12A and 12B are provided on the annular locking device 10. The effect is the same as that of the above embodiment. is there.

  As described above, according to the above-described embodiment, the attaching / detaching work of the annular locking tool 10 can be easily performed.

  In the above embodiment, an escalator step is described as an example of a passenger conveyor step board. For example, the movement of a shaft support member on a main shaft in a step board of an electric road is prevented, or other devices are fitted on the shaft. Needless to say, the present invention can also be applied to prevent the movement of the object.

  Furthermore, in the said embodiment, although the cyclic | annular locking tool was formed with the wire which consists of an elastic body, as long as it has step property, a material and cross-sectional shape will not ask | require.

The front view of the step of the escalator which shows one Embodiment of the foot board of a passenger conveyor provided with the object movement prevention mechanism by this invention. The expansion perspective view of the P section of FIG. Sectional drawing of the mounting part of the annular locking tool shown in FIG. Sectional drawing which shows the modification of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Step, 2A, 2B ... Wheel, 3 ... Main shaft, 3A ... Thin diameter part, 3B ... Large diameter part, 4A, 4B ... Shaft support member, 5 ... Bracket, 6 ... Passenger mounting part, 9 ... Annular groove, 10 ... Angular lock, 11A, 11B ... Guide for mounting, 12, 12A, 12B ... Pick.

Claims (6)

  In the object movement prevention mechanism configured to prevent the movement of the object fitted on the shaft in the axial direction by an annular locking tool formed in a C-shape mounted in an annular groove formed on the surface of the shaft. An object movement prevention mechanism characterized in that the locking tool is formed of an elastic body having a knob protruding on the outer peripheral portion.   The object movement preventing mechanism according to claim 1, wherein a plurality of the knobs are provided.   3. The object movement preventing mechanism according to claim 1, wherein the knob is formed at an equal distance from both ends of the C-shape.   2. The object movement preventing mechanism according to claim 1, wherein the annular locking member has a C-shaped end portion and a widening guide portion for mounting.   5. The object movement preventing mechanism according to claim 1, wherein the annular locking member has an engaging hole in a knob.   6. An object movement prevention mechanism according to claim 1, 2, 3, 4 or 5, wherein the shaft is an axle, and an object fitted on the shaft is a shaft support member, and a passenger is connected to the shaft support member via a bracket. A passenger conveyor tread characterized by fixing a mounting portion.

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