JPS6132948Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a fixing device for a step guide rail of a passenger conveyor such as an escalator.

First, a conventional fixing device for a step guide rail of a passenger conveyor will be explained with reference to FIGS. 1 to 3. In FIGS. 1 to 3, reference numeral 1 denotes a footboard of a passenger conveyor, which is fixed to a footboard shaft 3 passing through left and right endless footboard chains 2, respectively. Left and right front wheels 4 are attached to both ends of these step shafts 3, left and right rear wheels 1b are attached to the bracket 1a of the step board 1, and a total of four wheels are attached to the guide rails 5, 6, and 6, respectively. Guided by 7. These guide rails 5, 6, and 7 are fixed to the main frame 8 at appropriate pitches. For safety reasons, it is necessary to maintain the gap G between both ends of the footboard 1 and the skirt guard 9 to a constant minimum size, and for this reason, the footboard 1 must be moved linearly. Therefore, for one side, that is, the width of the front wheel 4 on the right side of Fig. 2,
The inner width of the front wheel guide rail 5, which has a substantially U-shaped cross section, horizontally guides the footboard 1 with a slight gap g. Note that the other guide rails 6 and 7 are for the front wheel 4 and the rear wheel 1.
It has play in the horizontal direction with respect to b, and does not contribute to horizontal (left and right) direction guidance.

Conventionally, the step guide rail 5 that guides in the horizontal direction as described above is fixed by welding stud bolts 10 to the guide rail 5, or by directly connecting the step guide rail 5 and the main frame 8 side member (not shown). Since the guide rail 5 is welded, welding heat is applied to the guide rail 5 itself, and as a result of distortion, a decrease in straightness is unavoidable, and it is difficult to adjust the gap G between the tread 1 and the skirt guard 9. It was hot.

This idea attempts to eliminate the drawbacks of the conventional ones mentioned above, and fixes the step guide rail that horizontally guides the front wheels to the main frame side with clips and bolts without welding or drilling. Accordingly, it is an object of the present invention to provide a step guide rail fixing device that can improve the straightness of a long guide rail.

An embodiment of this invention will be described below with reference to Figs. 4 and 5. In Figs. 4 and 5, which show enlarged views of the fixing portion of the guide rail 5 that guides the front wheels 4 in the horizontal direction, reference numeral 11 denotes a clip having a substantially U-shaped cross section. The clip 11 has a dimensional margin inside the U-shape so that it can be inserted and attached at any position relative to the step guide rail 5 having a substantially U-shaped cross section. Engagement portions 11b are cut out on the inner surface of the upper end of each of the side walls 11a of the clip 11, and these engagement portions 11b are formed so as to come into contact with and engage with the rising portions 5a on both sides of the guide rail 5 from above and outside, respectively. A bracket 8b is welded to a rail mounting plate 8a, which is a part of the main frame 8 of the passenger conveyor, and the lower surface of the guide rail 5 is supported by the bracket 8b. The bracket 8
The bolt 12 inserted from below b is
The clip 11 is screwed into a tapped hole 11c provided in the bottom of the bracket 8b, and by tightening the bolt 12, the lower surface of the guide rail 5 and the upper end of the bracket 8b are brought into contact with each other, and the engaging portion of the clip 11 and the guide rail 5 are brought into contact with each other.
The guide rail 5 is held and fixed to the bracket 8b by the frictional force caused by the tightening force of the bolt 12.

In this embodiment, the guide rail 5 is fixed at a plurality of locations in the longitudinal direction with required mutual spacing in the same manner as described above. Further, the configuration and operation of this embodiment other than those described above are the same as those of the conventional system shown in FIGS. 1 to 3, and therefore their explanation will be omitted.

As explained above, according to this invention, there is no need to perform welding or drilling on the front wheel guide rail 5, which is generally several meters long, and therefore eliminates distortion-causing factors such as welding heat. Clip 1
By using simple parts such as 1, the step guide rail 5 can be fixed to the main frame 8 side of the passenger conveyor with high precision without impairing the straightness, and the gap between the tread and the skirt guard can be easily and easily fixed. The advantage is that passenger conveyors such as escalators can be economically kept to a minimum constant size and economically safer.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing a conventional passenger conveyor, Fig. 2 is an enlarged sectional view taken along the - line in Fig. 1, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 is a sectional view taken along the - line in Fig. 2. FIG. 5 is a partially enlarged side view corresponding to the part shown in FIG. 3, showing a step guide rail fixing device according to an embodiment of the invention, and FIG. 5 is a sectional view taken along the line - in FIG. 4. 1...Treadboard, 4...Front wheel, 5...Front wheel guide rail, 5a...Rising part, 8...Main frame, 8a...
Rail mounting plate, 8b...bracket, 11...clip, 11b...engaging portion, 12...bolt. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A clip 11 having a substantially U-shaped cross section that engages with rising portions 5a on both sides of a front wheel guide rail 5 having a substantially U-shaped cross section that guides the footboard 1 in the horizontal direction is fixed to the main frame 8 side with bolts 12, and is attached to the front wheel guide rail 5. A fixing device for a step guide rail of a passenger conveyor, characterized in that the rail 5 is fastened and fixed to the main frame 8 side with the clip 11.