JPH0620743U - Scaffolding board support device - Google Patents

Abstract

(57) [Summary] [Structure] A stopper 5 is provided at the base end of the expandable rod 4, and a side wall 1b of the horizontal rod 1 protrudes like a tongue toward the inside 1a of the pipe and engages with the stopper 5. 6 is integrally formed. [Effect] Since it is only necessary to form the tongue-shaped engagement piece 6 on the horizontal rod 1, the processing is very easy, and the engagement piece 6 is also provided.
Since it has a tongue-like shape, when the stopper 5 of the telescopic rod 4 collides with the engaging piece 6 of the horizontal rod 1, the engaging piece 6 does not bite into the stopper 5 and is simply in the contact state. Therefore, the smooth movement of the telescopic rod 4 can be ensured for a long period of time without blocking the subsequent movement of the telescopic rod 4. Also, it does not become bulky during transportation and storage.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a support device for horizontally supporting a scaffold plate on a scaffold frame.

[0002]

[Prior art]

 When attaching a scaffolding board to a temporary scaffolding frame that is framed at a construction site, a supporting device generally called an expansion bracket is used, but this scaffolding board has a wide width and a narrow width. The horizontal part of the support device that receives the scaffolding plate is designed to expand and contract according to its width.

As shown in FIG. 4 and FIG. 5, the prior art of the expansion / contraction structure of the horizontal portion is such that the expansion / contraction rod 16 is retractably housed in the pipe of the horizontal rod 15 and is longitudinally arranged on the peripheral wall of the expansion / contraction rod 16. A pair of concave grooves 17 are formed from the base end to the vicinity of the tip, and a stopper 18 protruding from the outer peripheral surface of the telescopic rod 16 is provided at the base end of the telescopic rod 16 so as to correspond thereto. It has a structure in which a convex projection 19 that engages with the groove 17 is provided near the tip of 15 so as to project inside the pipe. When a narrow scaffold plate is placed on the horizontal rod 15, the telescopic rod 16 With almost the entire length stored in the pipe of the horizontal rod 15, a scaffold plate is placed on the horizontal rod 15, and the side face of the scaffold plate is applied to the abutment plate 20 at the tip of the expansion and contraction rod 16 so as to prevent the fall. When the scaffolding board is wide, the expansion rod 16 is used as a stopper at its base end. Until the 18 collides with the projection 19 of the horizontal rod 15, it is pulled out from the horizontal rod 15 to be in an extended state, and the scaffolding plate is placed and used between the extendable rod 16 and the horizontal rod 15 in this extended state. .

[0004]

[Problems to be solved by the device]

 By the way, with this conventional structure, a pair of guide grooves 17 must be formed in the telescopic rod 16 in the longitudinal direction as described above, which is of course troublesome to process, and the telescopic rod 16 is also required. By expanding and contracting the inside of the horizontal rod 15, the concave groove 17 of the expandable rod 16 is moved by using the convex projection 19 provided on the horizontal rod 15 as a guide, and the end wall 21 and the base end of the distal end of the concave groove 17 are moved. When the convex projection 19 collides with the stopper 18 of the portion, the projection 19 bites into the end wall 21 or the stopper 18 in a wedge shape, and even if the expansion rod 16 is tried to expand and contract again, the projection 19 will end up in the end wall 21 or the stopper. Since 18 was locked in a wedge state, it often happened that both could not be separated.

Further, as shown in FIG. 4B, the abutment plate 20 at the tip end of the expansion and contraction rod 16 has an upper end edge 20 a at the upper end edge 20 a in order to ensure sufficient engagement with the scaffold plate. There is a problem in that the upper end protruding portion 20a of the contact plate 20 becomes an obstacle and becomes bulky when the supporting device is transported or stored, because it protrudes considerably further upward. In this case, if the telescopic rod 16 can be rotated to the vertical rod 2 (Fig. 1) side, it will not be bulky, but as is clear from Fig. 5, the horizontal rod 15 and the telescopic rod 16 are convex to each other. Since the expansion rod 16 cannot be rotated in the circumferential direction by being engaged with the protrusion 19 and the concave groove 17, the expansion rod 16 cannot be rotated to the vertical rod 2 side. However, there was a difficulty that the above-mentioned difficulties could not be eliminated.

In view of the above-mentioned problems, the present invention eliminates the trouble of forming a recessed groove, which is relatively long in the longitudinal direction, in the telescopic rod as in the prior art, and reduces the contracted end of the telescopic rod. The purpose of the present invention is to eliminate the occurrence of the above-mentioned wedge-shaped engagement at the extension end, and to prevent the support device from becoming bulky during transportation and storage.

[0007]

[Means for Solving the Problems]

 In order to solve the above problems, in the present invention, the reference numeral of the embodiment is attached and the horizontal rod 1, the vertical rod 2 and the reinforcing rod 3 are provided, and the pipe 1a of the horizontal rod 1 is telescopically moved. In a scaffolding plate supporting device provided with a telescopic rod 4 which is provided with a stopper 5, a stopper 5 is projected at the base end of the telescopic rod 4, and a tongue-like protrusion is formed on the side wall 1b of the horizontal rod 1 toward the inside 1a of the pipe. It is also possible to adopt a configuration in which the engaging piece 6 that engages with the stopper 5 is integrally formed.

[0008]

[Action]

 When the telescopic rod 4 extends in the pipe 1a of the horizontal rod 1 and reaches its extension end, the tip end of the engaging piece 6 integrally formed on the side wall 1b of the horizontal rod 1 becomes a stopper 5 at the base end of the telescopic rod 4. Although it collides, at this time, since the engaging piece 6 is protrudingly provided in the shape of a tongue, it does not bite into the stopper 5 in a wedge shape, and the telescopic rod 4 can be smoothly moved when contracting and moving again. You can

Further, the engaging piece 6 can be formed by simply cutting and raising a part of the side wall 1b of the horizontal rod 1, so that the working operation is easy.

Further, since the telescopic rod 4 can be rotated in the circumferential direction with respect to the horizontal rod 1, the tip 8a of the abutting plate 8 at the tip of the telescopic rod 4 is a vertical rod when not in use. It can be turned to face the 2 side.

[0011]

【Example】

 In FIG. 1, a tubular vertical rod 2 is integrally formed at a base end portion of a tubular horizontal rod 1 at a right angle, and a reinforcing rod 3 is integrally connected in a glaze shape between the two. A tubular expansion rod 4 is also fitted in the pipe 1a of the horizontal rod 1 so as to be extendable and retractable, and the base end portion of the extension rod 4 is a circle whose outer peripheral edge protrudes from the outer peripheral surface of the extension rod 4. A plate-shaped or ring-shaped stopper 5 (Fig. 5) is fixed, and the end of the telescopic rod 4 has the same outer diameter as the horizontal flat rod 1 and is flush with the outer peripheral surface of the horizontal rod 1. An abutment plate 8 is fixed via a tube 7. Further, the abutment plate 8 has its upper end projecting portion 8a facing upward when it is used, and supports the scaffolding plate abutting against the abutment plate 8 with a sufficient margin to prevent it from coming off. The upper end projecting portion 8a of the plate 8 can be rotated so as to face the vertical rod 2 side.

A fixing screw 9 is screwed into the horizontal rod 1 at a side wall 1b of the horizontal rod 1 so as to penetrate the inside of the pipe 1a. The fixing screw 9 is screwed in so that its tip end is pressed against the outer peripheral surface of the telescopic rod 4. Thus, the telescopic rod 4 can be fixed to the horizontal rod 1 at a required telescopic movement position. Further, the vertical rod 2 is provided with a holding tool 11 such as a clamp fitting by a mounting screw 10 and a splicing tool 12 in a V-U shape in a plan view on the lower side thereof. It is designed to be fixed to the vertical rail.

On the side wall 1b of the horizontal rod 1, a hooking piece 6 which is an essential part of the present invention is integrally formed.

As shown in FIGS. 2 and 3, the engaging piece 6 has a pair of notches 13 formed on both lateral sides of the side wall 1b of the horizontal rod 1 while avoiding the upper surface side on which the scaffold plate is placed. The tongue-shaped protrusion 14 may be formed, and then the protrusion 14 may be raised toward the inside 1a of the horizontal rod 1 to form the pair of engaging pieces 6. However, the engaging piece 6 may be formed by cutting and raising at the same time as making the notch 13. As described above, the engaging pieces 6 are provided on both lateral sides of the side wall 1b instead of on the upper surface side in order to prevent foreign matter from entering the inside of the pipe 1a through the notches 13 formed when the engaging pieces 6 are formed. .

In this state, however, the telescopic rod 4 moves in the pipe 1a of the horizontal rod 1, and the stopper 5 at the base end of the telescopic rod 4 collides with the engaging piece 6 of the horizontal rod 1 so that the telescopic rod 4 is in the most extended state. Therefore, the engaging piece 6 does not bite into the stopper 5 simply because they are in contact with each other, and does not prevent the telescopic rod 4 from moving thereafter.

[0016]

[Effect of device]

 According to the present invention, unlike the conventional case, a complicated process such as forming a long groove having a concave shape in the longitudinal direction of the telescopic rod is not required, and a tongue-shaped engaging piece is simply formed on the horizontal rod. It is very easy to process because it is enough.

Moreover, since the engaging piece has a tongue-like shape, when the stopper of the telescopic rod collides with the engaging piece of the horizontal rod, the engaging piece does not bite into the stopper and is simply in the contact state. Therefore, it is possible to guarantee smooth movement of the telescopic rod for a long period of time without blocking the subsequent movement of the telescopic rod.

Further, since the telescopic rod is formed so as to be rotatable in the circumferential direction with respect to the horizontal rod, the telescopic rod is pivoted so that the upper end projection of the abutment plate at the tip of the telescopic rod faces the vertical rod side when not in use. By doing so, the abutting plate hardly protrudes upward from the horizontal rod, and since it does not become bulky, it can be packed compactly, which is convenient for transportation and storage.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a front view of the main part.

FIG. 3 is a vertical plan view of the main part.

FIG. 4 is a front view of a main part of a conventional example.

5 is a sectional view taken along line AA of FIG.
[Fig. 4] is a side view of a main part.

[Explanation of symbols]

 1 Horizontal Rod 2 Vertical Rod 3 Reinforcing Rod 4 Telescopic Rod 5 Stopper 6 Engagement Piece

Claims (1)

[Scope of utility model registration request] 1. A scaffolding plate supporting device comprising a horizontal rod, a vertical rod, and a reinforcing rod, which is provided with an extendable rod that extends and contracts in a pipe of the horizontal rod, wherein a stopper is projected from a base end portion of the horizontal rod. A scaffolding board support device comprising a tongue-shaped projecting piece that projects toward the inside of the pipe on the side wall of the horizontal rod, and integrally forms a hooking piece that engages with the stopper.