JP2008037646A - Screw slip-off preventing fitting for passenger conveyor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a fault that a screw for fixing an inner deck cover gets loose to injure passengers or falls off to cause the inner deck cover to come off. <P>SOLUTION: A screw hole position of the screw 6 fixing the lower end 4A of the inner deck cover 4 is provided with a screw slip-off preventing fitting 8 formed in approximately U-shape with a slip-off stopping piece 8A rising on the surface side of the inner deck cover 4, and a fall stopping piece 8B rising on the back face side, and comprising a screw fixing piece 9 having a cut out part 9A in the slip-off stopping piece. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

Claims

  The present invention relates to a passenger conveyor such as an escalator that continuously transports people, and more particularly to a screw retaining metal fitting for a deck cover.

  Conventionally, as a structure for fixing an inner deck cover of a passenger conveyor with screws (screws), for example, a structure disclosed in a patent document is known.

  The fixing structure described in Patent Document 1 includes a substantially U-shaped screw cover made up of a head removal prevention piece exposed on the step side of a screw for fixing the inner deck cover and a fall prevention piece on the back side of the lower end of the inner deck cover. By providing it, it prevents the screw from slipping out.

JP 2005-162474 A

  In the above-mentioned Patent Document 1, the slip-off prevention piece located on the surface side of the lower end portion of the inner deck cover is convex so as to cover the head of the screw. There has been a problem that shoes, baggage, baby carriage wheels, etc. are in sliding contact with each other and are deformed by the force of stripping off the slip-off prevention piece from the inner deck cover, causing the passenger to be injured.

  In addition to solving the above problems, an object of the present invention is to provide a configuration in which a retaining bracket can be easily detached from a screw and an inner deck cover can be easily assembled and removed.

  In order to achieve the above object, the present invention includes a skirt guard arranged on both sides of a step that is connected endlessly and a balustrade configured to fix the inner deck cover to the reinforcing member with screws. In this case, at the screw hole position of the screw provided at the lower end portion of the inner deck cover, there is a substantially U-shaped blockage piece that rises on the inner deck cover surface side and a fall prevention piece that rises on the back side of the inner deck cover. Provided with a screw retaining bracket having a letter shape, and further provided with a screw fixing piece on the back side of the slip-off preventing piece, engaged with the slip-off preventing piece, and having a cut portion through which the screw portion of the screw passes, The screw retaining bracket is configured such that when the screw is tightened, the slip-off preventing piece is in close contact with the lower end portion of the inner deck cover.

  Thus, according to the screw retaining bracket of the present invention, when the screw is screwed by the engagement of the retaining piece with the screw fixing piece, the retaining member is brought into close contact with the lower end portion of the inner deck cover. This eliminates the conventional deformation, and the screw fixing piece has a notch through which the screw thread part penetrates, so it can be inserted into the screw through the notch opening, so the screw retaining bracket can be easily attached and detached. This also has the effect of improving work efficiency.

  Hereinafter, an embodiment of a screw retaining metal fitting for a passenger conveyor according to the present invention will be described based on an escalator shown in FIGS.

  In the drawing, the escalator 1 includes a skirt guard 3 disposed on both sides of a step 2 connected endlessly and a balustrade 7 configured to fix the inner deck cover 4 to the reinforcing member 5 with screws 6. A screw retaining metal fitting 8 is attached to each attachment position of the screw 6 that fixes the lower end portion 4A of the inner deck cover 4. In this case, as shown in FIGS. 2 to 4, the screw retaining bracket 8 includes a retaining member 8 </ b> A that rises on the surface side of the lower end 4 </ b> A and a retaining member 8 </ b> B that rises between the skirt guard 3 on the back surface side. It is substantially U-shaped. The slip-off prevention piece 8A is provided with a tool insertion hole 8C in accordance with the mounting position of the screw 6 (FIG. 3), and is substantially C-shaped in plan view, so as to prevent the collision object from crashing. And a bag-like portion 8F for housing the head 6A of the screw 6 formed by the bent portion 8E. Further, the fall-preventing piece 8B on the back surface side is provided with an oblong hole 8G so that the screw retaining metal fitting 8 is not detached from the screw 6 in the temporarily tightened (loosened) state shown in FIG. . Further, in the bag-like portion 8F, there is an upward opening corresponding to the width W and through which the screw portion 6B of the screw 6 passes so as to be engaged with the bent portion 8E within the interval W between the bent portions 8E. A screw fixing piece 9 having a notch 9A is provided.

  Here, assembling of the inner deck cover 4 to the reinforcing body 5 is performed by adjusting the screw retaining metal fitting 8 to the position of the fixing hole 4A of the inner deck cover 4 as in the temporarily tightened state shown in FIG. A screw 6 is temporarily screwed into the screw through hole 3A of the guard 3 and the screw hole 5A formed in the reinforcing body 5, and the fall prevention piece 8B is interposed between the inner deck cover 4 and the skirt guard 3. At that time, the screw fixing piece 9 is in the bag-like portion 8F, and in this state, the screw retaining fitting 8 is pushed up as shown by an arrow C (FIG. 5), and a screwdriver is inserted into the tool insertion hole 8C with respect to the screw 6. When screwed, the head 6A of the screw 6 exerts a strong tightening force so that the screw fixing piece 9, the slip-off preventing piece 8A and the lower end 4A are brought into close contact with the skirt guard 3.

  On the other hand, to remove the inner deck cover 4 from the reinforcing body 5, when the screw 6 is loosened in the state of FIG. 3, the tightening force is released and the state shown in FIG. 5 is released, and the screw 6 is further loosened and released from the reinforcing body 5. This is possible.

  In the above description, when the cut portion 9A is a simple round hole, the push-up method as shown by the arrow C (FIG. 5) cannot be applied, and there is a drawback that it becomes a rather complicated assembly method.

  By doing so, the effect of preventing the screws 6 from being removed is improved, and the inner deck cover 4 can be easily assembled and removed.

  In the above embodiment, a general escalator has been described as an example. However, it can also be applied to all passenger conveyors such as moving sidewalks without steps between adjacent steps, and other fields having a similar fixing structure. There is no problem even if it is made of synthetic resin as well as metal.

  The side view which shows one Embodiment of the screw retaining metal fittings of the passenger conveyor by this invention.   The expanded sectional view of the A section of FIG. 1 of this invention.   Sectional drawing which follows the BB line of FIG. 2 of this invention.   The single-piece | unit perspective view of the screw retaining metal fitting of this invention.   Sectional drawing which supplements FIG. 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Escalator, 2 ... Step, 3 ... Skirt guard 4 ... Inner deck cover, 4A ... Lower end part, 5 ... Reinforcement material, 6 ... Screw 8 ... Screw Detachment bracket, 8A ... Detachment prevention piece, 8B ... Fall prevention piece 9 ... Screw fixing piece, 9A ... Notch

Claims (1)

  A skirt guard arranged on both sides of a step that is connected endlessly and a balustrade configured to fix the inner deck cover to a reinforcing member with a screw, at the lower end of the inner deck cover At the screw hole position of the provided screw, there is provided a screw retaining bracket that is substantially U-shaped with a slip prevention piece rising on the inner deck cover surface side and a fall prevention piece standing on the back side of the inner deck cover, and A screw fixing piece is provided on the back side of the slip-off prevention piece, which engages with the slip-off prevention piece and has a notch through which the screw portion of the screw passes, and when the screw is tightened, the slip-off prevention piece is A screw retaining metal fitting for a passenger conveyor, characterized in that it is in close contact with the lower end of the deck cover.

Images