JP2981161B2 - Base bracket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base fitting connected to a lower end of a pillar constituting a scaffold or the like so as to be adjustable in height.

[0002]

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

[0003] Such a base fitting is generally composed of a base fitting main body having a male screw portion projecting from a grounding seat plate and a height adjusting nut screwed into the male screw portion. Insert the male thread into the lower end of the pillar,
The lower end of the pillar is supported by the upper end of the height adjusting nut, and the height of the connection is adjustable by raising and lowering the screw position of the height adjusting nut.

[0004]

However, in the above-mentioned conventional base fitting, since the male screw portion is merely fitted into the lower end of the pillar, the base fitting falls off from the pillar when the scaffold is moved or disassembled. There was something.

[0005] In this case, it is inconvenient to carry and the like because the pillar and the base bracket are separated, and it is dangerous for an operator to drop during transportation.

In some cases, the base fitting and the pedestal are connected by a wire or the like to prevent the fall. However, in this case, when the height of the scaffold is to be changed halfway, the wire or the like must be released. It was troublesome and troublesome.

An object of the present invention is to provide a base fitting capable of solving the above problems.

[0008]

According to the present invention, there is provided a base metal fitting body in which a male screw portion projecting from a grounding seat plate can be fitted into a lower end of a pipe-shaped pillar constituting a scaffold or the like, A nut for adjusting the height of the connection between the base fitting main body and the pillar by supporting the lower end of the pillar at the upper end thereof, and fitting the outer circumference to the lower end of the pillar. An engaging cylinder having a projection on its surface, and a pair with the height adjusting nut,
An engagement fitting which loosely fits on the outer peripheral surface of the nut and engages with the projection of the engagement cylinder to prevent the base fitting body from falling off. .

Further, in the present invention, the engaging metal fitting is provided with a ring part which is loosely fitted on the outer peripheral surface of the height adjusting nut, and an engaging part which is detachably engageable with the projection of the engaging cylindrical body. Configure
Further, the ring portion is supported by a retaining member externally fitted to 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 fitting A according to the present invention, FIG. 2 is an explanatory view showing a connected state of the base fitting A, FIG. 3 is a sectional view of the same, and FIG. 4 is an exploded perspective view of the same.

In FIGS. 2 to 4, B denotes a pillar which forms 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 pillar B so as to be able to support a scaffold or the like so that the connecting height can be adjusted. A tubular male screw portion 3 having a male screw 31 formed on the outer peripheral surface thereof protrudes from a grounding seat plate 2 which is a metal fitting body, and the upper end of the male screw portion 3 can be fitted into the lower end of the pillar B. And Note that the external thread portion 3 may be rod-shaped instead of tubular.

Reference numeral 4 denotes a height adjusting nut, which has a female screw 41 corresponding to the male screw 31 on the inner peripheral surface, a handle 42 protruding from the outer peripheral surface, and a flange portion 43 provided at the upper end. .

Then, the nut 4 for adjusting the height is screwed into the male screw portion 3, the lower end of the pillar B is supported by the flange portion 43, and the handle 42 is gripped and rotated, and Is moved up and down to change the screwing position, and the connection height between the base metal body 1 and the pillar B is made variable. 44
Is a retaining material mounting groove for fitting a retaining material 9 described later.

Reference numeral 5 denotes an engagement cylinder which is externally fitted to the lower end of the pillar B. The engagement cylinder 5 has a pin-like shape whose base end is continuously connected to the peripheral surface and which protrudes outward. A projection 51 is provided.

Reference numeral 6 denotes an engagement fitting for preventing the male screw portion 3 of the base metal fitting 1 from dropping when the male fitting 3 is fitted into the pillar 1, and forms a pair with the height adjusting nut 4. 4 is loosely fitted to the outer peripheral surface thereof and is engageable with the projection 51 of the engagement cylinder 5.

The engagement fitting 6 has a ring portion 6a loosely fitted on the outer peripheral surface of the height adjusting nut 4 and an engagement portion 6b which is detachably engageable with the projection 51 of the engagement cylinder 5. Retaining member 9 having the ring portion 6a externally fitted to the height adjusting nut 4.
Supported by Therefore, the engagement fitting 6 is slidably mounted on the peripheral surface of the height adjusting nut 4 and does not fall off the nut 4.

In the present embodiment, the retaining member 9 is
Formed by a C-shaped spring, and a height adjusting nut 4
It can be easily packaged.

As shown in FIGS. 1 to 5, the engaging portion 6b has a guide notch groove 71 for slidingly guiding the projection 51 from above on a support piece 7 formed in an L-shape in 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 denote ear portions provided on the left and right sides 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 freely bent as shown in FIG.

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. As shown in FIG. 6, a locking portion 82 that engages with the projection 51 is integrally formed on the portion by extrusion or the like.

The locking portion 82 has a rounded upper surface so that when the projection 51 of the engagement cylinder 5 is inserted from above, the projection 51 slidably pushes the leaf spring 8 outward. On the other hand, the lower end is formed in a straight line so that it can be securely locked to the projection 51 when engaged.

With this configuration, when the base fitting main body 1 is fitted into the pillar B having the engagement cylindrical body 5 fitted to the lower end thereof, FIG.
As shown in the figure, the leaf spring 8 of the projection 51 of the engagement cylinder 5 is provided.
When inserted into the insertion hole 81, the locking portion 82 is
In the case where the pillar B is moved, the engaging fitting 6 is loosely fitted to the outer peripheral surface of the engaging metal fitting 6 and the base body which is screwed to the nut 4. 1 does not fall off from the pillar B.

Here, the engaging metal fitting 6 is
7 (a), first, the ring portion 6a of the engagement fitting 6 is loosely fitted from the lower end of the height adjusting nut 4 before the handle 42 is 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). A retaining member 9 is fitted to the engaging metal member 6 to prevent the engaging metal member 6 from falling off.

Then, on the outer peripheral surface of the height adjusting nut 4,
The handle 42 is attached (FIG. 7 (c)).

Here, they are continuously provided by welding.

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

Here, a case where the base 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 pillar B, and the height adjusting nut 4 in which the engaging fitting 6 is assembled to the male screw portion 3 of the base fitting main body 1 is screwed into an appropriate position. Keep it.

Then, the male screw portion 3 is fitted from the lower end of the pillar B, and the support piece 7 of the engagement fitting 6 is connected to the engagement cylinder 5.
The position of the protrusion 51 is adjusted to correspond to the protrusion 51 so that the protrusion 51 is guided by the guide notch groove 71 of the support piece 7.

The distal end of the projection 51 is inserted into the insertion hole 81 of the leaf spring 8 so that the engagement portion 82 is engaged with the upper surface of the projection 51, and the connection of the base A to the pillar 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 fitting main body 1 and the pillar B. Make adjustments.

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

On the other hand, when moving or disassembling a scaffold or the like, the base fitting 1 is connected to the pillar B via a height adjusting nut 4, an engaging fitting 6, and an engaging cylinder 5. Since it is held in the locked state, it does not fall
It can be moved and carried along with the camera, saving time and effort.

[0036]

According to the present invention, a base metal fitting main body in which a male screw portion projecting a base metal from a grounding seat plate can be fitted into a lower end of a pipe-shaped pillar constituting a scaffold or the like; A nut for adjusting the height of the connection between the base fitting main body and the pillar by supporting the lower end of the pillar at the upper end thereof, and fitting the outer circumference to the lower end of the pillar. A base having a projection on its surface and a nut for height adjustment, which is loosely fitted on the outer peripheral surface of the nut and engages with the projection of the engagement cylinder to form a base metal body; When the scaffold or the like is moved or disassembled and carried, the base metal does not fall off from the pillar, and the base metal can be moved together with the pillar. It is portable and hassle-free.

Further, the above-mentioned engagement metal fitting is constituted by connecting an engagement portion which is detachably engageable with a projection of the engagement cylinder to a ring portion which is loosely fitted on the outer peripheral surface of the height adjusting nut, Further, by supporting the ring portion with a retaining member externally fitted to the height adjustment nut, the height adjustment nut and the engagement metal fittings can be attached to the base metal body as a set.
The engagement fitting is not lost and handling is easy.

[Brief description of the drawings]

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

FIG. 2 is an explanatory diagram showing a connection state between the base metal fitting and a pillar.

FIG. 3 is a cross-sectional view showing a connection state between the base fitting and a pillar.

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

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

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

FIG. 7 is an explanatory view showing an assembling procedure of a height adjusting nut and an engagement fitting.

[Explanation of symbols]

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

Claims (1)

(57) [Claims] An externally threaded portion (3) protruding from a grounding seat plate (2).
Into the base end of a pipe-shaped footnote (B) that constitutes a scaffold, etc., and screwed into the male screw part (3), and the lower end of the pillar (B) at the upper end A height adjusting nut (4) that supports the base metal body (1) and the connecting height of the pillar (B) is variable, and is externally fitted to the lower end of the pillar (B) and has a peripheral surface. A pair of an engaging cylinder (5) provided with a projection (51) and the height adjusting nut (4), which is loosely fitted on the outer peripheral surface of the nut (4), and Engagement fitting that engages with the projection (51) of (5) to prevent the base fitting body (1) from falling off
(6) , wherein the engaging fitting (6) is attached to the outer peripheral surface of the height adjusting nut (4).
The loose fitting ring (6a) and the projection (51) of the engaging cylinder (5)
An engaging part (6b) which can be freely engaged and disengaged is continuously provided, and further,
Pull out the ring (6a), which is fitted over the height adjustment nut (4).
A base metal fitting supported by a cleat (9) .