JP2951920B2 - Footrest mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a foot portion, a side portion located on both sides of the foot portion, and a leg portion. The foot portion and the side portion are formed of a cored bar and a synthetic resin covering the core bar. The present invention relates to a device for mounting a footrest mounted on a manhole.

[0002]

2. Description of the Related Art Conventionally, a foot part, a side part located on both sides of the foot part, and a leg part are formed. For example, as shown in Japanese Utility Model Publication No. 4-4040, a hook-shaped leg is extended from both sides and the hook-shaped leg is attached to the wall of the manhole. There is a device which is inserted into a hole for fixing a footrest formed therein to fix the footrest (hereinafter referred to as the former).

Further, as shown in, for example, Japanese Utility Model Laid-Open Publication No. Hei 6-71899, a leg with a sharpened tip is extended from both sides, and this leg is driven into a wall of a manhole to fix a footrest. There is a thing which did to do it (hereinafter, the latter).

[0004]

However, in the above-mentioned known device, the hook-shaped legs are inserted into holes for fixing the hooks formed in the wall of the manhole, so that they are inevitably large. Holes need to be drilled, which is cumbersome.

In the latter case, it is necessary to drive the leg into the wall of the manhole, which requires an excessive amount of force and requires skill to drive both legs evenly, which makes the driving operation troublesome. There is a problem.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide a pre-installed insert in a concrete wall of a manhole.
By connecting the connecting member and the insert guide with the connecting member fixed to the leg of the footrest, the mounting of the footrest can be done easily, easily and securely.
In addition, an object of the present invention is to provide a device for mounting a footrest that can be easily replaced.

[0007]

In order to achieve the above-mentioned object, the present invention provides an apparatus for mounting a footrest according to the present invention, wherein a protrusion for retaining is formed on the outer periphery of a cylindrical body, and the protrusion is formed on the inner periphery of the cylindrical body. Insert the insert guide with the female screw into the manhole concrete.
And a locking portion is formed by forming a notched groove around the entire circumference in the vicinity of the tip of the leg portion, and a screw screwed with the female screw of the insert guide is formed on the outer circumference. A through hole through which the leg portion can penetrate is formed in the axial direction of the connection member provided, and a split washer is engaged with the notch groove protruding from the connection member in a state where the leg portion is inserted into the through hole. The connecting member is rotatably engaged with the leg, and the connecting member is connected to the insert guide after the leg is engaged with the connecting member.

[0008]

1 and 2 relate to an embodiment of the present invention. FIG. 1 is a plan view showing a part of a footrest mounted in a sectional view, and FIG. FIG. 3 is an exploded explanatory view of a fixture mounting device.

In the drawings, reference numeral 1 denotes the entire footrest, and the footrest 1 has side portions 4 and 4 each having a leg 3 fixed in a concrete 2 of a manhole. And a foot portion 5 disposed between the tip portions of the side portions 4 and 4.

The step portion 5 is formed by coating a linear cored bar 6 with a synthetic resin 7. The synthetic resin 7 is coated from the center of the step portion 5 to both ends once or less. The synthetic resin 7 is formed so as to increase in thickness at a loft angle of 5 degrees, and irregularities for a non-slip 8 are formed on the upper surface of the synthetic resin 7 and corrugated grips 9 are formed on the side surfaces. The reflectors 10 and 10 are attached to the outer periphery of 7.

The side portion 4 is also formed by covering a straight metal core 6 (continuous with the foot portion 5) with a synthetic resin 7 (continuous with the foot portion 5). And side 4
The metal core 6 is further extended from the tip of the leg 3 to form the leg 3.

The leg 3 is constituted by the metal core 6 as described above, and a notch groove 11 is formed in the vicinity of the distal end of the leg 3 over the entire circumference. doing.

Reference numeral 12 denotes a connecting member made of stainless steel. On the outer periphery of the connecting member 12, a screw 13 to be screwed with a female screw of an insert guide described later is screwed.
A flange 14 is formed at the base of the rubber material, and a rubber packing 15 is inserted on the flange 14. A through-hole 16 is formed in the connecting member 12 in the axial direction, and the leg 3 of the footrest 1 is penetrated through the through-hole 16. Reference numeral 17 denotes a split washer which is locked in the notched concave groove 11 protruding from the connecting member 12 in a state where the leg 3 is inserted into the through hole 16.

Reference numeral 18 denotes an insert guide made of a stainless steel tubular body which has been preliminarily implanted (at the time of producing the concrete wall) in the concrete 2 of the manhole. In order to prevent the insert guide 18 from slipping out of the wall of the concrete 2, a ring-shaped retaining projection 19 is formed, and on its inner periphery, a screw 13 screwed to the connecting member 12 and a screw 13 are formed. A mating female screw 20 is formed.

Since the footrest having the above-described structure is mounted on the concrete 2, first, the concrete 2 is inserted into the concrete 2 of the manhole. Insert guides 18 which are opened on the inner wall at the time of casting are implanted at predetermined intervals (the width of the leg 3 of the footrest 1). Then, when actually attaching the footrest 1, the legs 3 of the footrest 1 are inserted into the through holes 16 of the connection member 12, respectively, and are inserted into the cutout grooves 11 of the leg 3 as described above. After the split washer 17 is locked and the leg 3 is rotatably locked to the connecting member 12, the connecting member 12 is brought closer to an insert guide 18 planted in the concrete 2, By screwing the screw 13 screwed into the connecting member 12 to the female screw 20 of the insert guide 18 while rotating the connecting member 12, the footrest 1 can be connected to the connecting member 12 and the insert guide 1.
8 and held in concrete 2. Thus, the fixing of the footrest 1 to the concrete 2 is completed.

As described above, the footrest 1 is fixed to the concrete 2 by locking the leg 3 of the footrest 1 to the connecting member 12 in a rotatable state. Is completed only by connecting the connecting member 12 and the insert guide 18 while rotating the insert guide 1, so that the footrest 1 can be easily and easily and reliably mounted.
8 is provided with a projection 19 for retaining, so that the footwear 1 does not fall out of the concrete 2, and
Since the leg 3 is securely locked to the connecting member 12,
Since the leg 3 does not come off from the connecting member 12 and the connection between the connecting member 12 and the insert guide 18 is a screw connection, it is extremely easy to replace the footrest 1 by rotating the connecting member 12. Can be done.

[0017]

According to the present invention, an insert guide having a cylindrical body having a retaining projection formed on the outer periphery thereof and a female screw threaded on the inner periphery of the cylindrical body is provided on the concrete wall of the manhole. And a locking portion is formed by forming a notched groove around the entire periphery in the vicinity of the tip of the leg portion, and a screw screwed with the female screw of the insert guide is provided on the outer periphery. A connection hole is formed in the axial direction of the connection member so that the leg portion can penetrate therethrough, and a split washer is engaged with the notch groove protruding from the connection member in a state where the leg portion is inserted into the through hole and connected. The legs are rotatably locked to the member, and the legs are locked to the connecting member, and then the connecting member is connected to the insert guide. Therefore, the attachment of the footrest is simple, easy, and reliable. It is easy to change the footwear without falling out of the concrete. The Kakegu of the mounting device.

[Brief description of the drawings]

FIG. 1 is a plan view showing a part of an assembled footrest according to an embodiment of the present invention.

FIG. 2 is an exploded explanatory view of an attachment device for a footrest.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Footrest 2 Concrete 3 Leg 4 Side 5 Foot step 6 Core metal 7 Synthetic resin 11 Notch groove 12 Connection member 13 Screw 16 Through hole 17 Split washer 18 Insert guide 19 Retaining projection 20 Female screw

Continuation of the front page (56) References JP-A-4-124394 (JP, A) JP-A-9-291553 (JP, A) JP-A-9-13408 (JP, A) JP-A-60-151942 (JP) , U) Japanese Utility Model Hei 7-44214 (JP, U) Japanese Utility Model Utility Model 55-62652 (JP, U) Japanese Utility Model Utility Model 28-3617 (JP, Y1) (58) Fields surveyed (Int. Cl. ⁶ , DB Name) E02D 29/12 E06C 1/00-9/14

Claims (1)

(57) [Claims] 1. A stepping portion having a foot portion, side portions located on both sides thereof, and a leg portion, wherein the stepping portion and the side portion are formed of a metal core and a synthetic resin covering the metal core, and a core from the side portion is provided. An insert guide in which a leg is formed by extending gold and which is attached to a manhole, wherein a retaining projection is formed on an outer periphery of a cylindrical body and a female screw is screwed on an inner periphery of the cylindrical body. Is implanted in advance in the concrete wall of the manhole, and a notch groove is formed around the entire periphery near the tip of the leg to form a locking portion, and the female screw of the insert guide is formed on the outer periphery. A notch formed in the connecting member provided with a screw that is screwed with the notch groove, the notch groove protruding from the connecting member in a state where the leg is inserted into the through hole in the axial direction of the connecting member; , The legs are rotatably locked to the connecting member, and the legs are locked to the connecting member. Capacitors - mounting device footrests tool is characterized in that so as to connect to Togaido.