JPH09125687A - Base metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a base metal fitting from falling off a bent or the like. SOLUTION: The main body 1 of a base metal fitting is so constituted that a projecting external thread part 3 provided on a base plate 2 for grounding can be fitted in the lower end of a pipe-shaped bent B constituting a scaffold or the like. The base metal fitting is made up of a nut 4 for regulating height which is screwed on the external thread part 3, supports the lower end of the bent B on the upper end thereof and makes variable the height of connection between the main body 1 of the base metal fitting and the bent B, a tube body 5 for engagement which is fitted on the lower end of the bent B and has a projecting body provided on the peripheral surface and an engagement metal fitting 6 which makes a set with the nut 4 for regulating height, being fitted freely on the outer peripheral surface of the nut 4 and preventing the main body 1 of the base metal fitting from falling off, in engagement with the projecting body 51 of the tube body 5 for engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base metal fitting which is height-adjustably connected to a lower end of a pedestal which constitutes a scaffold or the like.

[0002]

2. Description of the Related Art Conventionally, in a scaffold used for construction work, a base metal fitting for supporting the scaffold on the ground is connected to a lower end of a scaffold.

Such a base metal fitting is generally composed of a base metal fitting main body in which a male screw portion is projectingly provided on a seat plate for grounding, and a height adjusting nut screwed into the male screw portion. While inserting the male screw part into the lower end of the pedestal,
The upper end of the height adjusting nut supports the lower end of the pedestal, and the connecting height can be adjusted by moving the screwing position of the height adjusting nut up and down.

[0004]

However, in the above-described conventional base metal fitting, the male screw portion is simply fitted into the lower end of the pedestal, so that when the scaffold is moved or disassembled, it falls off from the pedestal. There was an occasion.

In this case, the pedestal and the base metal member are separated from each other, which is inconvenient to carry, and it is dangerous for the operator if they fall during transportation.

Therefore, the base metal fitting and the pedestal may be connected with a wire or the like to prevent a drop. However, in this case, when the height of the scaffold is to be changed midway, the wire or the like must be unraveled. It was troublesome and troublesome.

An object of the present invention is to provide a base metal fitting that can solve the above problems.

[0008]

According to the present invention, there is provided a base metal fitting main body in which a male screw portion projecting from a grounding seat plate can be fitted into a lower end of a pipe-shaped pedestal constituting a scaffold or the like, and the male screw. A height adjusting nut that is screwed to the base and supports the lower end of the pedestal at the upper end to make the connecting height between the base metal fitting main body and the pedestal variable, and is fitted to the lower end of the pedestal and fitted around the circumference. A cylinder for engagement having a protrusion on the surface and a pair with the height adjusting nut are formed,
A base metal fitting, comprising: an engaging metal fitting that is loosely fitted to an outer peripheral surface of the nut and that engages with a protrusion of the engaging cylinder to prevent the base metal body from falling off. .

Further, according to the present invention, the above-mentioned engaging metal fitting is provided with a ring portion which is loosely fitted on the outer peripheral surface of the height adjusting nut, and an engaging portion which is engageable with and disengageable from the protrusion of the engaging cylinder. It is also characterized in that the ring portion is supported by a retaining member fitted onto the height adjusting nut.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a base metal fitting A according to the present invention, FIG. 2 is an explanatory view showing a connected state of the base metal fitting A, FIG. 3 is a sectional view of the same, and FIG. 4 is an exploded perspective view of the same.

2 to 4, B is a pedestal that constitutes a scaffold or the like at a construction site or the like, and is formed in a pipe shape.

As shown in FIGS. 1 to 4, the base metal fitting A is fitted into the lower end of the pedestal B so that the scaffold or the like can be supported so that the connecting height can be adjusted. It is a metal fitting body, and a tubular male screw portion 3 having a male screw 31 formed on the outer peripheral surface is projectingly provided on the grounding seat plate 2, and the upper end of the male screw portion 3 can be fitted into the lower end of the pedestal B. I am trying. The male screw portion 3 may have a rod shape instead of a tubular shape.

A height adjusting nut 4 has a female screw 41 corresponding to the male screw 31 formed on the inner peripheral surface thereof, a handle 42 projecting from the outer peripheral surface thereof, and a flange portion 43 provided at the upper end thereof. .

Then, the same height adjusting nut 4 is screwed into the male screw portion 3, the lower end of the pedestal B is supported by the flange portion 43, and the grip 42 is gripped and rotated to rotate the male screw portion 3 above. The screwing position is changed by moving up and down to make the connection height between the base metal fitting body 1 and the pedestal B variable. 44
Is a retaining member mounting groove for fitting a retaining member 9 described later.

Reference numeral 5 denotes an engaging cylinder which is externally fitted to the lower end of the pillar B. The engaging cylinder 5 has a pin-like shape in which the base end is connected to the peripheral surface and protrudes outward. Protrusions 51 are provided.

Reference numeral 6 denotes an engaging metal fitting for preventing the male screw portion 3 of the base metal fitting body 1 from falling off when it is fitted into the pedestal 1, and is a pair with the height adjusting nut 4. 4 is loosely fitted to the outer peripheral surface of the engaging member 4 and can be engaged with the protrusion 51 of the engaging cylinder 5.

The engaging metal fitting 6 has a ring portion 6a loosely fitted on the outer peripheral surface of the height adjusting nut 4 and an engaging portion 6b which is detachably engageable with the projection 51 of the engaging tubular body 5 and is continuously provided. The retaining member 9 in which the ring portion 6a is externally fitted to the height adjusting nut 4
Supported by Therefore, the engaging fitting 6 is slidably attached to the peripheral surface of the height adjusting nut 4 and does not fall off from the nut 4.

In the present embodiment, the retaining member 9 is
Formed by C-shaped spring, height adjustment nut 4
It can be easily exteriorized.

As shown in FIGS. 1 to 5, the engaging portion 6b is provided with a guide notch groove 71 for slidingly guiding the projection 51 from above in a supporting piece 7 formed in an L shape in a side view. At the same time (see FIG. 5), the leaf spring 8 is brought into contact with the outer surface of the support piece 7.
Is installed. Reference numerals 72, 72 are ears provided on the left and right of the support piece 7.

The lower end of the leaf spring 8 is cantilevered below the guide notch groove 71, and the upper end is free to bend as shown in FIG.

Further, the leaf spring 8 is provided with an insertion hole 81 through which the projection 51 can be inserted, corresponding to the lower end position of the guide notch groove 71, and moreover, the upper edge of the insertion hole 81. As shown in FIG. 6, a locking portion 82 that engages with the protrusion 51 is integrally formed on the portion by extrusion processing or the like.

The locking portion 82 has a rounded upper surface so that when the projection 51 of the engaging cylinder 5 is inserted from above, the projection 51 pushes the leaf spring 8 outward while slidingly contacting the projection 51. On the other hand, the lower end portion is formed linearly so that it can be surely locked to the projection 51 at the time of engagement.

With this structure, when the base metal fitting body 1 is fitted into the pedestal B having the engaging cylinder body 5 fitted on the lower end thereof, as shown in FIG.
As shown in FIG. 5, the leaf spring 8 of the protrusion 51 of the engagement cylinder 5 is
When it is inserted into the insertion hole 81 of the
When the pedestal B is moved, the engaging metal fitting 6 is loosely fitted to the height adjusting nut 4 and the base body is screwed to the nut 4. 1 does not fall out from the pedestal B.

Here, the height adjusting nut 4 is attached to the engaging fitting 6
The procedure for assembling is described. First, as shown in FIG. 7 (a), first, the ring portion 6a of the engaging fitting 6 is loosely fitted from the lower end of the height adjusting nut 4 in a state before the grips 42 are continuously provided. .

Next, as shown in FIG. 7 (b), a retaining member mounting groove 44 formed on the outer peripheral surface of the height adjusting nut 4 is formed.
(See FIG. 3) is fitted with a retaining member 9 to prevent the engagement fitting 6 from falling off.

Then, on the outer peripheral surface of the height adjusting nut 4,
Attach the handle 42 (Fig. 7 (c)).

Here, they are connected by welding.

As described above, since the height adjusting nut 4 and the engaging metal fitting 6 are screwed to the base metal fitting body 1 as a set, the engaging metal fitting 6 is not lost and is handled. Will be easier.

Here, a case where the base metal fitting A according to the present invention is actually used will be described below.

In advance, the engaging cylinder 5 is externally fitted to the lower end of the pedestal B, and the height adjusting nut 4 in which the engaging metal fitting 6 is attached to the male screw portion 3 of the base metal fitting body 1 is screwed into an appropriate position. I'll do it.

Then, the male screw portion 3 is fitted from the lower end of the pedestal B, and the support piece 7 of the engaging fitting 6 is attached to the engaging tubular body 5.
The position of the protrusion 51 is adjusted so as to correspond to that of the protrusion 51, so that the protrusion 51 is guided to the guide cutout groove 71 of the support piece 7.

The tip of the protrusion 51 is inserted into the insertion hole 81 of the leaf spring 8 and the engaging portion 82 is engaged with the upper surface of the protrusion 51, and the connection of the base metal A to the pedestal B is completed.

Then, the grip 42 of the height adjusting nut 4 is gripped and rotated, and the screwing position is changed by moving the male screw portion 3 up and down to change the connecting height between the base metal fitting body 1 and the pedestal B. Adjust the height.

At this time, since the engaging metal fitting 6 is loosely fitted to the height adjusting nut 4, only the nut 4 rotates, and the relative connecting length between the male screw portion 3 of the base metal fitting 1 and the pedestal B. Can be changed easily.

On the other hand, when the scaffold or the like is moved or disassembled and carried, the base metal fitting 1 is connected to the pedestal B through the height adjusting nut 4, the engaging metal fitting 6 and the engaging cylinder 5. Since it is held in a closed state, it will not fall out and the pedestal B
It is possible to move and carry with and it does not take time.

[0036]

Advantageous Effects of Invention According to the present invention, a base metal fitting main body in which a male threaded portion of a base metal fitting projecting from a seating plate for grounding can be fitted into the lower end of a pipe-shaped pedestal that constitutes a scaffolding, and the male thread. A height adjusting nut that is screwed to the base and supports the lower end of the pedestal at the upper end to make the connecting height between the base metal fitting main body and the pedestal variable, and is fitted to the lower end of the pedestal and fitted around the circumference. A pair of an engaging cylinder having a protrusion on its surface and the height adjusting nut is formed, and the nut is loosely fitted on the outer peripheral surface of the nut and engages with the protrusion of the engaging cylinder to form a base metal fitting body. The base metal fittings do not fall out of the pedestal when the scaffolding is moved or disassembled and carried, and it is possible to move together with the pedestal. It can be carried around with no hassle.

Further, the above-mentioned engaging fitting is constituted by connecting a ring portion which is loosely fitted to the outer peripheral surface of the height adjusting nut with an engaging portion which is freely engageable with and disengageable from the protrusion of the engaging cylinder. Further, since the ring portion is supported by the retaining member that is externally fitted to the height adjusting nut, the height adjusting nut and the engaging metal fitting can be attached to the base metal fitting body as a set,
The engagement fitting is not lost, and the handling is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a base metal fitting according to the present invention.

FIG. 2 is an explanatory diagram showing a connected state of the base metal fitting and the pedestal.

FIG. 3 is a cross-sectional view showing a connected state of the base metal fitting and the pedestal.

FIG. 4 is an exploded perspective view of the base metal fitting.

FIG. 5 is an explanatory view of the engagement fitting in plan view.

FIG. 6 is an explanatory diagram of a leaf spring.

FIG. 7 is an explanatory view showing a procedure for assembling the height adjusting nut and the engaging fitting.

[Explanation of symbols]

 A base metal fitting B pedestal 1 base metal fitting body 2 seat plate 3 male screw part 4 height adjusting nut 5 engaging cylinder 6 engaging metal fitting 6a ring part 6b engaging part 7 support piece 8 leaf spring

Claims (2)

[Claims] 1. A male screw portion (3) projecting from a grounding seat plate (2).
With a base metal fitting body (1) that can be fitted into the lower end of a pipe-shaped pedestal (B) that constitutes a scaffold, and the male screw part (3), and the upper end of the pedestal (B). A height adjusting nut (4) that supports the lower end and allows the connection height between the base metal fitting body (1) and the pedestal (B) to be variable, and is fitted onto the lower end of the pedestal (B) and fitted around the circumference. The engaging cylinder (5) provided with a protrusion on its surface and the height adjusting nut (4) are paired, and the nut (4) is loosely fitted to the engaging cylinder (5). ) Engaging metal fittings that prevent the base metal fitting body (1) from falling off by engaging with the protrusions (51)
(6) A base metal fitting comprising: 2. A height adjusting nut for fitting the engaging metal fitting (6).
The ring portion (6a) loosely fitted to the outer peripheral surface of (4) is fitted with the engaging cylinder (5).
The protruding portion (51) is formed by continuously connecting the engaging portion (6b) which can be engaged and disengaged, and the ring portion (6a) is further provided with a height adjusting nut.
2. The base metal fitting according to claim 1, wherein the base metal fitting is supported by a retaining member (9) fitted onto the (4).