JP7136506B1 - Fastening device for wedge fastening scaffolding - Google Patents

Abstract

A binding device for a wedge binding type scaffold that reduces the load acting on predetermined components when binding is released, improves durability, and more reliably prevents a wedge from escaping upward from a wedge guide member. I will provide a. A binding device for a wedge binding type scaffold consists of a receiving metal fitting 2 joined to the outer periphery of a post 1 and a locking metal fitting 4 attached to the end of a cloth material 3. The locking metal fitting 4 is a flat surface. A wedge guide member 5 having a forward opening when viewed from above, and a wedge 6 having a substantially vertically elongated plate-like shape and arranged vertically movably within the wedge guide member 5 so that a part of its length protrudes. is provided at the lower end of the wedge 6 so that the lower end of the wedge 6 is knocked up and can contact the lower end of the wedge guide member 5 when the wedge 6 is moved upward. A stop 62 is provided. [Selection drawing] Fig. 4

Description

The present invention relates to a binding device for wedge binding scaffolding.

In this specification and the scope of claims, regarding the relationship between the strut and the cloth material, the front means the side on which the strut to be tied is located, and the rear means the side on which the cloth material is stretched.

As a binding device in a wedge binding type scaffold, for example, a receiving metal fitting joined to the outer circumference of the post at a predetermined height and a wedge-shaped locking metal fitting fixed to the end of the cloth material passed between the two posts. It is known that a wedge-shaped locking metal fitting is hammered into a receiving metal fitting from above with a tool such as a hammer to lock the post and the fabric material. In such a binding device, when releasing the binding between the strut and the cloth material, the lower end of the wedge-shaped locking metal fitting of the cloth material is tapped up with a tool to release the locking of the wedge-shaped locking metal fitting. In Patent Document 1 below, a wedge-shaped locking fitting is inclined forward and downward at approximately the same inclination as the central wall of the front edge and the receiving fitting, which has a vertical portion that contacts the support when it is lowered for tightening. A vertically elongated plate-like wedge with a rim, a U-shaped part that protrudes downward from the cloth material and is sized to fit in the bracket when viewed from the top, and the central wall is inclined forward and downward at the same angle as the central wall of the bracket. a wedge guide member into which the wedge is vertically movably inserted; the portion below the fabric material of the wedge guide member is used as an insertion portion for the receiving metal fitting; The bar (wedge holding bar) is stopped, and the wedge escape prevention bar traverses and has a vertical length required for the vertical movement stroke of the wedge. A cinch device is disclosed in which the portions are wedged.

Japanese Patent No. 5648145

In the binding device for the conventional wedge binding type scaffold, when the lower end of the wedge is hit with a tool such as a hammer in order to release the binding between the post and the cloth material, the wedge moves when the hitting force is strong. Since the wedge escape prevention bar rises to the upper limit of the stroke, i.e., the position where the wedge escape prevention bar comes in contact with the lower edge of the vertical slot or the forward notch, the wedge escape prevention bar will also be repeatedly It abuts against the lower edge of the notch and receives a load. Therefore, it is required to improve the durability of the binding device by reducing the load applied to the wedge escape prevention bar.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has a simple configuration that reduces the load applied to the wedge escape prevention bar when releasing the binding between the strut and the arm, thereby improving the durability of the binding device. To provide a tying device for a wedge tying scaffolding, which is capable of improving safety and more reliably preventing a wedge from escaping upward from a wedge guide member.

This invention consists of the following aspects in order to achieve said objective.

It consists of a central wall inclined forward and downward, and a pair of side walls extending forward from the left and right ends of the central wall, and the front ends of the pair of side walls being joined to the outer surface of the column at a predetermined height. A U-shaped receiving bracket with a front opening when viewed from the plane where it is located,
It consists of a locking metal fitting that is provided in a hanging shape at the end of the cloth material and is inserted into the receiving metal fitting from above,
The locking fitting has a rear wall and a pair of side walls extending forward from left and right ends of the rear wall, respectively, and is attached to the end of the cloth material so as to protrude downward from the cloth material. A U-shaped wedge guide that opens forward when viewed from the plane so that the lower part of the rear wall is aligned with the inner surface of the central wall of the receiving metal fitting when the locking metal fitting is inserted into the receiving metal fitting from above. The wedge guide member has a substantially vertically elongated plate-like shape, and is arranged in the wedge guide member such that a part of the length protrudes so that the wedge guide member can move up and down. and a wedge that presses against the inner surface of the rear wall at a predetermined location so that the rear wall can be pressed against the inner surface of the central wall,
A front opening recess or slot of a required length extending in the vertical direction is provided at an intermediate portion of the length of the wedge. a retaining wedge retaining bar is bridged between both side walls of the wedge guide member;
Further, a wedge upward retainer projecting horizontally outward from the lower end of the wedge so as to come into contact with the lower end of the wedge guide member when the wedge is moved upward by striking the lower end of the wedge upward. A binding device in a wedge binding scaffold provided with a section.

According to the binding device in the above-mentioned wedge binding type scaffolding, the wedge upper retaining part is provided at the lower end of the wedge, so that when the lower end of the wedge is struck up and the wedge is moved upward, the wedge guide member Since the wedge upper retaining portion abuts against the lower end of the wedge, the wedge is more reliably prevented from being detached upward from the wedge guide member. As a result, as compared with the prior art described in Patent Document 1, the workability of releasing the binding is improved, and the load applied to the wedge holding bar is eliminated or reduced, so that the durability of the binding device is improved. The frequency of parts replacement is reduced, and running costs can be reduced.

1 is a horizontal sectional view showing a state before use of a binding device in a wedge binding type scaffold according to an embodiment of the present invention; FIG. FIG. 2 is a partially cutaway side view of the wedge guide member and fabric material showing the tying device in the wedge tying scaffold in the state of FIG. 1; A wedge guide member that is inserted from above into a receiving metal fitting of a fastening device in a wedge binding type scaffolding according to an embodiment of the present invention, and drives the wedge downward to indicate a state of being tied to the receiving metal fitting, and It is the side view which notched a part of cloth material. FIG. 4 is a partially cutaway side view of the wedge guide member and the cloth material, showing a state in which the fastening device in the wedge fastening type scaffolding of FIG. . FIG. 5 is a vertical sectional view along line VV of FIG. 4;

BEST MODE FOR CARRYING OUT THE INVENTION A binding device for a wedge binding scaffold according to an embodiment of the present invention will be described in detail below with reference to the drawings.

The binding device for the wedge binding type scaffolding shown in Figures 1 to 5 consists of a bracket (2) joined to the outer surface of the post (1) at a predetermined height, and a cloth material (3) hanging down at the end. It consists of a locking metal fitting (4) inserted into the receiving metal fitting (2) from above. The bracket (2) has a forward-opening U-shape when viewed from above, and has a central wall (21) inclined forward and downward, and a pair of brackets extending forward from the left and right ends of the central wall (21). It consists of a side wall and is joined to the outer surface of the column (1) at a predetermined height. The locking fitting (4) has a wedge guide member (5) attached to the end of the cloth material (3), and a wedge (6) arranged in the wedge guide member so as to be vertically movable. .

Specifically, the wedge guide member (5) has a forward opening U-shape when viewed from a plane having a rear wall (51) and a pair of side walls extending forward from the left and right ends of the rear wall (51), It is attached to the end of the cloth material (3) in a hanging shape. Preferably, the wedge guide member (5) has a vertical length slightly longer than the sum of the outer diameter of the cloth material (3) and the length of the receiving fitting (2). The wedge guide member (5) is fitted into U-shaped recesses (31) and (32) formed at the top and bottom of the front end, and the lower part of the wedge guide member (5) protrudes downward from the cloth material (3), and the locking metal fitting (4) The upper and lower U-shaped recesses (31) and (32) are formed so that the lower end of the wedge guide member (5) can protrude downward from the lower end of the receiving metal fitting (2) when inserted into the receiving metal fitting (2) from above. affixed to the edge of the The rear wall (51) is arranged so that the lower part of the rear wall (51) is aligned with the inner surface of the center wall (21) of the receiving metal fitting (2) when the locking metal fitting (4) is inserted into the receiving metal fitting (2) from above. has been made.

The wedge (6) is formed of a substantially vertically elongated plate-like body, and has a protruding head (61) formed so as to protrude outward in the left-right direction from the upper end of the wedge (6). The front face of the wedge (6) is mostly vertical except that the lower part is slightly inclined backward, and in the middle there is a forward opening recess (63) of the required length. The rear surface of the wedge (6) is inclined forward and downward at the same angle as the inclination angle of the central wall (21) of the bracket (2), and a rear opening recess (64) of a required length is provided in the middle. there is The rear opening recess (64) has a lower portion that slopes forward and has an L-shaped depression (65) at the lower end, and two arc-shaped depressions (66) that continue to the lower portion that slopes forward and downward. formed. The lower end of the wedge (6) is provided with a protrusion (62) that protrudes horizontally outward (laterally outward in this embodiment) from the lower end of the wedge (6). Details of the projecting portion (62) will be described later. The wedge (6) is held between the side walls of the wedge guide member (5) and held by the wedge (6) by a wedge retaining bar (54) located in the forward opening recess (64) of the wedge (6). ) is movably held vertically so that a part of its length is accommodated in the wedge guide member (5).

When the user hits the lower end of the wedge (6) with a hammer or the like to move the wedge (6) upward, the protrusion (62) provided at the lower end of the wedge (6) is 62) abuts on the lower end of the wedge guide member (5) to prevent the wedge (6) from rising any further and prevent the wedge (6) from escaping upward from the wedge guide member (5). It functions as an upper retainer (62) and substantially defines the upper limit of the vertical movement stroke of the wedge (6). Although the upper wedge retaining portion (62) projects outward in the left-right direction in this embodiment, the direction in which it projects is not limited, and the upper wedge retaining portion (62) can come into contact with the lower end of the wedge guide member (5). It should be done as follows. Also, the wedge upper retainer (62) may be composed of a separate member attached to the lower end of the wedge (6). If the wedge (6) is constructed by the projecting portion (62) that is formed integrally with the wedge (6), it is easy to manufacture the wedge (6), and it is also advantageous in terms of load-bearing strength.

The front opening recess (63) of the wedge (6) may be elongated. Also, the vertical length of the front opening recess (63) or long hole, and the wedge holding bar (54) held between the front opening recess (63) or the long hole and both side walls of the wedge guide member (5). The positional relationship of is appropriately set within a range in which the wedge (6) can be moved up and down so that the fastening function of the locking fitting (4) can be sufficiently achieved. 5) In order to prevent an upward load from acting on the wedge holding bar (54) at the upper limit of the vertical movement stroke of the wedge (6) with which the lower end abuts, the front opening recess (63) or It is preferable that the bottom edge of the slot and the wedge retaining bar (54) just touch, and a slight gap is formed between the front opening recess (63) or the bottom edge of the slot and the wedge retaining bar (54). is more preferred.

An upper through hole (52) is formed in the rear wall (51) of the wedge guide member (5) at a position above the lower front end of the fabric member (3) when fitted in the bracket (2). A lower penetration is provided at a position facing the L-shaped recess (65) of the wedge (6) with the projection (62) of the wedge (6) in contact with the lower end of the wedge guide member (5). Holes (53) are drilled. From the lower oblique forward extension (71) having a V-shaped side surface opening forward, the lower oblique portion extending forward, and the front end of the lower oblique forward extension (71) A leaf spring (7) formed with a depending vertical portion (72) is positioned across the cloth material (3) and the latch (4). The lower obliquely forward extension portion (21) of the leaf spring (7) is inserted forward through the upper through hole (52). The upper end of the leaf spring (7) is received by the rear wall (51) of the wedge guide member (5). A wedge retaining pin (8) is attached to the lower end of the vertical portion (72) of the leaf spring (7) so as to protrude in the longitudinal direction from the lower end of the vertical portion (72) of the leaf spring (7). The rear end of the wedge retaining pin (8) is inserted into the lower through hole (53) of the rear wall (51) of the wedge guide member (5), and the front end of the wedge retaining pin (8) part is fitted into the L-shaped recess (65) of the wedge (6). In the center wall (21) of the bracket (2), there is a lower through hole (53) of the rear wall (51) of the wedge guide member (5) when the locking bracket (4) is inserted into the bracket (2). A through hole (22) is formed at a location facing the .

Two arcuate depressions (66) are formed above the L-shaped depression (65) so that the wedge (6) can be lowered in two stages. ) may be one, or two or more. The structure of the wedge guide member (5) and the method of attaching the wedge guide member (5) to the cloth member (3) are not limited to those described above, and can be changed as appropriate within the scope of their function.

To fasten the cloth material (3) to the post (1), first, the locking fitting (4) consisting of the wedge (6) and the wedge guide member (5) is attached to the support fitting (1) fixed to the post (1). 2) and put it in the state shown in Fig.3. Next, the protruding head (61) of the wedge (6) is struck with a hammer or the like to lower the wedge (6). As a result, the front surface of the wedge (6) is pressed against the outer surface (1) of the column, and the lower portion of the rear surface of the wedge (6) is pressed against the rear wall (51) of the wedge guide member (5). 51) is pressed against the inner surface of the center wall (21) of the bracket (2). Thus, the locking fitting (4) is fixed to the receiving fitting (2). Furthermore, when the wedge (6) descends, the front end of the wedge retaining pin (8) slips out of the L-shaped recess (65) of the wedge (6) and moves obliquely upwards and backwards into the arc recess (66) above it. ), the wedge retaining pin (8) is pushed rearward, and the rear end of the wedge retaining pin (8) moves into the lower through hole (53) of the rear wall (51) of the wedge guide member (5). It projects further rearward from the bracket (2) and is fitted into the through hole (22) of the central wall (21) of the bracket (2). As a result, the locking fitting (4) is firmly fixed by the receiving fitting (2), and the cloth material (3) is stably bound to the support (1).

To release the ties between the post (1) and the fabric material (3), hit the lower end of the wedge (6) protruding downward from the bracket (2) with a hammer and move the wedge (6) upward. Let As a result, the wedge (6) is released from the support (1) and the wedge guide member (5), and the front end of the wedge retaining pin (8) moves L from the arcuate recess (66) of the wedge (6). The wedge retaining pin (8) comes out of the through hole (22) in the central wall (21) of the bracket (2), so that the locking bracket (4) is held in place by the bracket (2). be free from Therefore, if the locking metal fittings (4) provided at the ends of the cloth material (3) are pulled upward from the receiving metal fittings (2), the strut (1) and the cloth material (3) are released from the tightening. At this time, since the wedge upper retaining portion (62) is provided, the wedge guide member ( Since the wedge upper retaining portion (62) abuts against the lower end of the wedge (6), the wedge (6) is reliably prevented from coming off the wedge guide member (5). As a result, the workability of unfastening is improved. Furthermore, since the load applied to the wedge holding bar (54) is reduced, the durability of the binding device is improved, the frequency of parts replacement is reduced, and running costs can be reduced.

(1) Post
(2) Bracket
(21) Center wall
(22) Through hole
(3) Cloth material
(4) Locking fitting
(5) Central wall of wedge guide member receiving bracket
(51) Back wall
(52) Upper through hole
(53) Lower through hole
(54) Wedge Retaining Bar
(6) Wedge
(61) protruding head
(62) Upper wedge retainer (projection)
(63) Front opening recess
(64) Rear opening recess
(65) L-shaped indentation
(66) Arc recess
(7) leaf spring
(71) Forward extension
(72) Vertical
(8) Wedge retaining pin

Claims (2)

It consists of a central wall inclined forward and downward, and a pair of side walls extending forward from the left and right ends of the central wall, and the front ends of the pair of side walls being joined to the outer surface of the column at a predetermined height. A U-shaped receiving bracket with a front opening when viewed from the plane where it is located,
It consists of a locking metal fitting that is provided in a hanging shape at the end of the cloth material and is inserted into the receiving metal fitting from above,
The locking fitting has a rear wall and a pair of side walls extending forward from left and right ends of the rear wall, respectively, and is attached to the end of the cloth material so as to protrude downward from the cloth material. A U-shaped wedge guide that opens forward when viewed from the plane so that the lower part of the rear wall is aligned with the inner surface of the central wall of the receiving metal fitting when the locking metal fitting is inserted into the receiving metal fitting from above. The wedge guide member has a substantially vertically elongated plate-like shape, and is arranged in the wedge guide member such that a part of the length protrudes so that the wedge guide member can move up and down. and a wedge that presses against the inner surface of the rear wall at a predetermined location so that the rear wall can be pressed against the inner surface of the central wall,
A front opening recess or long hole having a required length extending vertically is provided in the intermediate portion of the length of the wedge, and the wedge is arranged in the front opening recess or the long hole so that the wedge can move up and down. a retaining wedge retaining bar is bridged between both side walls of the wedge guide member;
Further, the upper limit of the vertical movement stroke of the wedge is abutted against the lower end of the wedge guide member at a predetermined position when the lower end of the wedge is pushed up to move the wedge upward. an upper wedge retaining portion protruding horizontally outward for preventing an upward load from being applied to the wedge retaining bar by defining the wedge retaining bar ;
The wedge upper retaining portion is formed integrally with the wedge by swelling the lower end portion of the wedge ,
When the upper wedge retaining portion and the lower end of the wedge guide member abut, at the same time, the lower edge of the front opening recess or the elongated hole and the wedge holding bar are in contact, or the front opening recess or A binding device in a wedge binding scaffold in which a small gap is formed between the lower edge of the slot and the wedge holding bar . 2. The method according to claim 1, wherein the upper wedge retaining portion has an upper surface capable of making surface contact with the lower end surface of the wedge guide member when the upper wedge retaining portion and the lower end of the wedge guide member come into contact with each other. A binding device in a wedge binding scaffold as described.

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