JP2008008052A - Hook of temporary horizontal member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hook capable of fixing a temporary horizontal member such as a scaffold board to a horizontal round bar to prevent it from rising without sacrificing the convenience of excellent detachability. <P>SOLUTION: This hook comprises a holding part having an opening capable of being hooked to the horizontal round bar from the upper side, a locking part capable of holding the horizontal round bar by closing a part of the opening, a slide shaft formed integrally with the locking part, a support part in which the slide shaft is inserted and which slidingly rotatably supports the slide shaft, and a spring interposed between the support part and a spring receiver fitted to near the locking part of the slide shaft and biasing the locking part in the closing direction. The holding part is opened in the slide shaft by compressing the spring. An opening holding pin capable of being locked to the support part at the position to which the locking part is rotated. A slit allowing the opening holding pin to extend therethrough when the locking part is so directed as to be able to close the opening is formed in the support part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a hook that is provided at an end of a temporary horizontal member such as a scaffold plate and is used when the horizontal member is hung on a horizontal round member of a scaffold.

  For example, as shown in Patent Document 1 and Non-Patent Document 1, a conventional scaffold plate structure is constructed by first constructing a horizontal material on a scaffold and hooking a gripping portion provided at an end portion of the scaffold plate on the horizontal material. The scaffolding board is constructed by

  In addition, since what was shown by patent document 1 is the structure where the holding part protruded from the both ends of the work board, a clearance gap will be made between a horizontal member and a work board by the protrusion part. This gap not only causes a crawl when an operator walks, but also forms a complete cavity, and there is a risk of tools falling.

  On the other hand, what is shown in Non-Patent Document 1 is that the gripping portion is formed by uneven processing at both ends of the work plate and both ends are staggered, so that the adjacent scaffold plates when spanned over the horizontal member The scaffolding plate can be constructed in a state where the both end shapes match and there is no gap.

Japanese Utility Model Publication No. 1-18753 (page 3, Fig. 2) NS Internet <URL: http://www.nisso-sangyo.co.jp/silkroad.html>

  By the way, the conventional holding part of temporary horizontal members, such as a scaffold board, was comprised only by the opening according to the external shape of a horizontal material. For this reason, there was a problem that if the gust blows from below, the temporary horizontal member easily floats. In addition, when the temporary horizontal member is a scaffold plate, warping may occur over time, and at this time, there is a risk that both ends of the scaffold plate are lifted and cause a whip.

  The present invention has been made in view of the above-described problems, and the object of the present invention is to prevent a temporary horizontal member such as a scaffolding plate from floating with respect to a horizontal round member without sacrificing detachable stool. It is to provide a hook that can be fixed.

  In order to achieve the above-described object, in the present invention, a holding part provided with an opening that can be hooked from above on a horizontal round member, a retaining part that can block a part of the opening and hold the horizontal round part, Between a slide shaft that is integrally provided with a retaining portion at the tip, a receiving portion that slidably and rotatably supports the slide shaft, and a spring receiver that is provided near the retaining portion of the slide shaft. And a spring that urges the retaining portion in the closing direction, further compresses the spring to open the gripping portion on the slide shaft, and rotates the retaining portion at the position where the retaining portion is rotated. An opening holding pin that can be locked with the opening is provided, and the receiving portion is provided with a slit through which the opening holding pin can pass when the retaining portion is oriented to close the opening.

  According to the above-described means, when the retaining portion is in the closed posture, the slit passes through the receiving portion, and the opening of the grip portion is partially closed by the spring bias. On the other hand, by retreating the slide shaft against the spring bias from this state, the opening of the gripping part can be attached to and detached from the horizontal round member. In this open state, the slide shaft is further rotated by a predetermined angle. Thus, the opening holding pin is locked and held with the receiving portion.

  The receiving portion is formed in a substantially U-shape with a downward opening, and means that the front wall is used as a spring receiver and the slit is provided in the rear wall.

  Furthermore, in order to ensure operability, the rear end of the slide shaft is bent in an L shape in the same direction as the retaining portion, and a knob is provided integrally. By this means, the posture of the retaining portion can be easily known from the posture of the knob, and erroneous operation is prevented.

  In addition, it is preferable that the opening of the gripping portion and the retaining portion form a continuous arc of 180 degrees or more in the closed state because it more reliably prevents the horizontal round member from falling off.

  In addition, if this invention is applied to a scaffold board, construction | assembly of a scaffold board can be performed simply and the safety | security of a scaffold can be improved more, and it is preferable.

  As described above, according to the present invention, the temporary horizontal member can be reliably fixed with a simple configuration and a simple operation. Moreover, since the opening state of a holding part is also hold | maintained, removal | desorption can be performed easily.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 3 are operation transition diagrams of a hook according to an embodiment of the present invention. First, in FIG. 1, reference numeral 1 denotes a holding portion having an opening on the lower surface and an opening surface 1 a having a 180-degree arc, which is applied to a round pipe as a horizontal round member S. Reference numeral 2 denotes a slide shaft that is slidably and rotatably inserted into a U-shaped receiving portion 3 having an opening on the lower surface. Further, 4 is a retaining portion integrally provided at the tip of the slide shaft 2, and is configured to form an arc of 180 degrees or more continuously with the opening surface 1a of the gripping portion 1, and the opening of the gripping portion 1 is formed. The horizontal round material S is held by closing.

  Here, the retaining portion 4 is a coil spring-like spring 5 interposed between a pin-shaped spring receiver 2 a protruding in front of the slide shaft 2 (near the retaining portion 4) and the front wall 3 a of the receiving portion 3. Is always biased in the closing direction.

  Reference numeral 6 denotes a knob formed by bending the rear end of the slide shaft 2 into an L shape, and the slide shaft 2 is retracted against the spring 5 or the slide shaft 2 is rotated by a predetermined angle. . In particular, in this embodiment, the knob 6 is bent in the same direction as the retaining portion 4 (drawing, downward). With this configuration, if the position of the knob 6 is in the vertical direction, it can be seen that the retaining portion 4 is also in a position in which the horizontal round member S can be held, and erroneous operation can be prevented. However, the knob 6 may be provided arbitrarily, and may be T-shaped, knurled, or any other shape.

  In such a configuration, further features of the present invention will be described. First, a longitudinal slit 7 is formed in the rear wall 3 b of the receiving portion 3. On the other hand, an opening holding pin 8 projects from the slide shaft 2 in the same direction as the retaining portion 4 (the drawing, the vertical direction). Here, the opening holding pin 8 has a shape capable of passing through the slit 7.

  Next, the operation of the hook will be described with reference to FIGS. 2 and 3. When the slide shaft 2 is retracted against the bias of the spring 5 from the holding state (mainly fixed state) in FIG. As shown, the opening of the grip portion 1 is opened, and the hook can be removed from the horizontal round material S or temporarily fixed to the horizontal round material S. At this time, since the opening holding pin 8 passes through the slit 7 of the receiving portion 3, the slide shaft 2 is allowed to move backward.

  Subsequently, by rotating the slide shaft 2 by a predetermined angle from the state of FIG. 2 (90 degrees in front of the drawing in this embodiment), the opening holding pin 8 becomes the rear wall 3b of the receiving portion 3 as shown in FIG. And lock. The state which compressed the spring 5 and open | released the opening of the holding part 1 by the said latching is hold | maintained. That is, the state of FIG. 3 shows that the temporarily fixed state when the hook is fixed to the horizontal round member S or removed from the horizontal round member S is maintained.

  On the other hand, it goes without saying that in order to change the hook from temporary fixing to permanent fixing, the hook may be operated in the reverse order.

  The hook can be applied to any horizontal member as long as it is for the horizontal round member S. However, as the most suitable example, as shown in FIG. Can be mentioned. That is, when this hook is applied to the scaffolding plate F, the gripping portions 1 are provided at both ends of the scaffolding plate F, and the retaining portions 4 are configured to be able to protrude toward the gripping portion 1. As a more preferable example, it is possible to provide one gripping portion 1 so as to be uneven and to provide staggered portions at both ends of the scaffold plate F. By using such a scaffolding plate F, a plurality of scaffolding plates F can be connected in a state where there is no gap on the abutting surface, and the lifting is reliably prevented by the hook. In addition, when this hook is applied to the scaffolding board F, since the operation is performed from the lower floor, the scaffolding board F can be fixed in advance and a safer scaffolding can be constructed.

The side view of a hook concerning one embodiment of the present invention (main fixed state) Same (sliding state of slide shaft) Same (temporarily fixed) Bottom view of scaffolding board to which the hook is applied

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holding part 2 Slide shaft 3 Receiving part 4 Retaining part 5 Spring 6 Knob 7 Slit 8 Opening holding pin

Claims (5)

A gripping part provided with an opening that can be hooked from above on a horizontal round member, a retaining part that can partially hold the horizontal round member by closing a part of the opening, and a slide shaft provided integrally with the retaining part; It is interposed between a receiving part for inserting and supporting the slide shaft so as to be slidably rotatable, and a spring receiver provided near the retaining part of the slide shaft and the sliding shaft, and urges the retaining part in the closing direction. The slide shaft is provided with an opening holding pin that compresses the spring to open the gripping portion and can be engaged with the receiving portion at a position where the retaining portion is rotated. The hook of the temporary horizontal member characterized by providing the part with a slit through which the opening holding pin can pass when the retaining portion is in a direction capable of closing the opening. The hook of the temporary horizontal member according to claim 1, wherein the receiving portion is formed in a substantially U-shape with a downward opening, and the front wall thereof is used as a spring receiver, and the slit is provided in the rear wall. The temporary horizontal member hook according to claim 1 or 2, wherein the rear end of the slide shaft is bent in an L shape in the same direction as the retaining portion and the knob is integrally provided. The temporary horizontal member hook according to claim 1, 2 or 3, wherein the opening of the gripping portion and the retaining portion form an arc of 180 degrees or more in the closed state. The temporary horizontal member hook according to any one of claims 1 to 4, wherein the temporary horizontal member is a scaffold plate.

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