JP2018150751A - Wedge tightening tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold a binder 20 that is wedge-fastened to a flange Y of a support column X in a posture that does not prevent attachment/detachment to/from the flange Y.SOLUTION: A wedge tightening tool comprises at least: a main body member 10 having a notch 11 that can be accommodated so as to vertically sandwich the flange Y; a binder 20 vertically movable so as to block the notch 11 and capable of being inserted into a coupling hole Z provided in the flange Y; and a posture control member 30 interposed between the main body member 10 and the binder 20. A recess 222 is provided on a back surface of a sliding portion 22 constituting the binder 20, and on a front surface of the posture control member 30, a protruding portion 321 to be urged forward by an elastic force is provided. The binder 20 is held in a self-supporting posture with respect to the main body member 10 by accommodating the protruding portion 321 in the recess 222.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a wedge binding tool used when connecting structural members of a temporary structure such as a temporary scaffold.

In a temporary scaffolding and the like, a wide variety of structures have been conceived for wedge binding devices for attaching horizontal materials such as handrails and horizontal members, and diagonal materials such as braces and handrails for stairway scaffolds to a column.
For example, Patent Document 1 discloses a connecting device for connecting steel pipes at right angles, and a flange is provided on the outer periphery of one steel pipe side, and the flange is formed in a notch of a holder member provided at the tip of the other steel pipe. And a coupling device that couples the two by a coupling member that can be inserted into a coupling hole provided in the flange.
Then, the coupling member has a bifurcated shape with a wedge portion and a hook-shaped portion, and the hook-shaped portion is provided with a locking step portion for a temporary placement portion provided at a lower portion of the holder member, In a non-bonded state, the coupling member can be temporarily placed on the holder member, thereby improving workability during coupling and disassembly.

Japanese Patent No. 4040802

However, in the coupling device described in the above-mentioned Patent Document 1, the locking step portion is detached from the temporary placement portion with a slight swing or inclination.
Therefore, in actual use, a worker holding a steel pipe temporarily places the coupling member temporarily in the temporary placement portion of the holder member, and the coupling work is performed while considering the posture of the coupling device so that the temporary placement state is maintained. Had to do.

  Therefore, the present invention can hold the binding material tightly coupled to the flange of the column in a posture that does not prevent the column from being attached to or detached from the flange of the column, and the operator can easily switch between maintaining and releasing the holding state manually. One of the purposes is to provide means.

The first invention of the present application, which has been made to solve the above-mentioned problems, is a wedge binding device that is coupled to a flange provided on the side periphery of a column in a wedge-tight scaffold, and can be accommodated so as to sandwich the flange vertically. A body material having a notch, a binding material that is vertically movable so as to block the notch and can be inserted into a coupling hole provided in a flange, and the body material between the body material and the coupling material. A posture control member that is biased forward by an elastic force, and a wedge portion that can be inserted into the coupling hole and a contact surface between the posture control member and Having at least a sliding portion, and engaging the sliding portion and the attitude control material at least in one position at a position where the wedge portion does not interfere with the housing operation of the flange by the main body material, For the body material Characterized in that it is capable of positioning the serial binder.
Further, according to a second invention of the present application, in the first invention, the engagement mechanism between the sliding portion and the posture control material includes a recess portion provided on a back surface of the sliding portion, and a front surface of the posture control material. And the bonding material can be positioned with respect to the main body material by fitting the protrusion into the recess.
Further, according to a third invention of the present application, in the first invention, an engagement mechanism between the sliding portion and the posture control material includes a convex portion provided on a back surface of the sliding portion, and a front surface of the posture control material. And the protruding portion is placed on the protruding portion so that the binding material can be positioned with respect to the main body material.
According to a fourth aspect of the present invention, in the first aspect, the engagement mechanism between the sliding portion and the posture control material includes a convex portion provided on a back surface of the sliding portion, and a front surface of the posture control material. And the concave portion is provided so that the binding material can be positioned with respect to the main body material by fitting the convex portion into the concave portion.
According to a fifth invention of the present application, in the invention according to any one of the first to fourth inventions, the stopper prevents the binding material from coming out of the main body material at a lower end of the sliding portion. A portion is provided.
Further, a sixth invention of the present application is the invention according to any one of the first to fifth inventions, wherein the main body material has a connecting portion with a horizontal material or a diagonal material constituting a scaffold at the rear end. It is characterized by.
According to a seventh invention of the present application, in any one of the first to fifth inventions, the main body material also serves as a horizontal material or a diagonal material constituting a scaffold. .

According to the present invention, at least one of the effects described below is achieved.
(1) A stable self-supporting posture can be maintained.
Because the elastic material of the posture control material is used to maintain the self-supporting posture of the binder, the self-supporting posture is not solved even when the wedge binding device itself is shaken or tilted.
Therefore, it is not necessary to consider the posture of the wedge tying tool when the worker holds the hand.
(2) A self-supporting posture can be easily found.
If the sliding part that constitutes the binding material is moved up and down with the fingers of the worker, the engagement mechanism between the sliding part and the posture control material is automatically operated to switch to a self-supporting posture. The self-standing posture of the binder can be easily found without looking at the hand.

1 is a schematic exploded view of a wedge binding tool according to Embodiment 1. FIG. 1 is a schematic plan view of a wedge binding tool according to Embodiment 1. FIG. The schematic side view which shows the use condition of the wedge binding tool which concerns on Example 1. FIG. The schematic side view which shows the self-supporting attitude | position of the wedge binding tool which concerns on Example 2. FIG. The schematic side view which shows the self-supporting attitude | position of the wedge binding tool which concerns on Example 3. FIG.

  Embodiments of the present invention will be described below with reference to the drawings.

<1> Overall configuration The wedge binding tool according to the present embodiment is a wedge binding type scaffolding of a horizontal material constituting the scaffold so as to be coupled to a flange Y provided on a side periphery of the column X via a coupling hole Z. It is a member provided at the end.
As shown in FIG. 1, the wedge binding device according to the present embodiment mainly includes at least a main body material 10, a binding material 20, and a posture control material 30.
An engagement mechanism A is provided between the binding material 20 and the attitude control material 30 to engage them.
Details of each component will be described below.

<2> Main Body Material The main body material 10 is a member for sandwiching the flange Y provided radially on the outer peripheral wall of the support column X from above and below.
As shown in FIG. 1, the main body member 10 has a substantially U shape when viewed from the side.
Further, as shown in FIG. 2, the main body 10 has a tapered shape on the front side in plan view, and is configured such that the tip thereof is in contact with the outer wall of the column X.
Details of each component will be described below.

<2.1> Front end structure of main body material The front end side of the main body material 10 has at least a notch 11 capable of sandwiching the flange Y vertically and an insertion hole 12 through which the bonding material 20 is inserted.
Details of each component will be described below.

<2.1.1> Notch The notch 11 is an element for accommodating the flange Y of the column X.
The notch 11 according to the present embodiment opens the front end side of the main body material 10 and penetrates in the side surface direction, and the notch 11 opens the front end of the main body material 10 in a side view. It has a substantially U shape.
A protrusion for positioning the flange Y may be separately provided on the inner wall portion constituting the notch 11.

<2.1.2> Insertion Hole The insertion hole 12 is an element that accommodates the binding material 20 in a vertically movable manner.
The insertion hole 12 according to the present embodiment has a lower portion separated in two places along with a bifurcated shape of a coupling member described later, and accommodates a front side hole 121 that accommodates a wedge portion 21 described later, and a sliding portion 22. The shape provided with the rear side hole 122 to exhibit is exhibited.

<2.2> Rear end structure of main body material On the rear end side of the main body material 10, an accommodation space that can accommodate the connecting portion 13 with a horizontal material or a diagonal material connected to the column X and the posture control material 30. 14 and at least. Details of each component will be described below.

<2.2.1> Connection Part The connection part 13 is an element for connecting to a horizontal member to be connected to the support column X.
In the present embodiment, the connecting portion 13 corresponds to the inner wall 141 of a horizontal member made of a steel pipe, and is constituted by claws 131 formed at four locations along the circumferential direction of the steel pipe.
A wedge binding tool can be provided at the end of the horizontal member by inserting the claw 131 into the end of the horizontal member and welding the contact portions of both.

<2.2.2> Storage Space The storage space 14 is an element for storing the attitude control material 30.
In the present embodiment, the accommodation space 14 is formed inside the main body material 10.
The front side of the accommodation space 14 communicates with the insertion hole 12.
The upper, lower, left, and right sides of the accommodation space 14 are surrounded by the inner wall 141 of the solid part of the main body material 10.
A part on the rear side of the accommodation space 14 is surrounded by an inner wall 141 of the solid part of the main body member 10, and a communication hole 142 communicating with the rear end of the main body member 10 is formed in the other part. .

<3> Binding Material The binding material 20 is a member for binding to the flange Y of the column X.
The binding material 20 according to the present embodiment has a bifurcated shape that separates back and forth with respect to the vertical direction.
This bifurcated shape is divided into a wedge part 21 on the front side and a sliding part 22 on the rear side. Details of each component will be described below.

<3.1> Wedge Part The wedge part 21 is an element that is inserted into the coupling hole Z provided in the flange Y of the support post X and is wedge-tightened.
The wedge part 21 is provided with a taper 211 that tapers downward.
The head portion of the wedge portion 21 is provided with a striking portion 212 for driving the wedge portion 21 downward with a hammer or the like during the tightening operation.

<3.2> Sliding Part The sliding part 22 is an element for preventing the binding material 20 from coming out of the main body material 10.
A through hole 221 is provided at the lower end of the sliding portion 22, and a recess 222 is provided on the back surface of the sliding portion 22. Details of each component will be described below.

<3.2.1> Through-hole The through-hole 221 is an element that is provided at the lower end of the sliding portion 22 and attaches a rivet, a bolt, and a nut (not shown).
When assembling the wedge binding tool, first, the bonding material 20 is inserted into the insertion hole 12 of the main body material 10, and the through hole 221 is exposed from the lower end of the main body material 10, and then a rivet or a bolt nut is attached to the through hole 221. Form a stop.
This retaining portion interferes with the insertion hole 12 to prevent the binding material 20 from slipping out from above the main body material 10.

<3.2.2> Recessed portion Recessed portion 222 is an element for positioning bonding material 20 at a predetermined position by contact with posture control material 30.
The recessed portion 222 is formed by providing a recess on the front side of the sliding portion 22 with respect to the contact surface 223 formed on a substantially flat surface on the back side of the sliding portion 22.
The recessed portion 222 is formed in such a manner that the flange Y can be accommodated in the main body material 10 without the wedge portion 21 blocking the notch 11 in a state where the bonding material 20 is positioned at a predetermined position by the recessed portion 222. It becomes a position to become.

<4> Posture Control Material The posture control material 30 is a member for positioning the binding material 20 at a predetermined position with respect to the main body material 10 by the elastic force of the posture control material 30.
The posture control material 30 is interposed between the main body material 10 and the bonding material 20 and has an elastic force so as to urge the main body material 10 to push the bonding material 20 forward. This is a flat spring-like member.
Hereinafter, details of each part of the posture control member 30 will be described.

<4.1> Folded portion The attitude control member 30 is disposed in the accommodating space 14 of the main body 10 so that the folded portion 31 that bends the flat thin plate at the intermediate portion is positioned above.
The posture control member 30 is divided into a front piece 32 and a rear piece 33 that are in contact with the binding material 20 with the folded portion 31 in between, and the front piece 32 and the rear piece 33 are in a predetermined positional relationship. Has elastic force to restore.

<4.2> Front Piece / Protrusion The front piece 32 is provided with a protrusion 321 that is bent so as to protrude forward while extending in a plane toward the lower side.
The outer shape of the protruding portion 321 is a shape corresponding to the recessed shape of the recessed portion 222.
Further, the lower end of the front piece 32 is bent backward so as not to interfere with the sliding portion 22.

<4.3> Rear piece / receiving portion The rear piece 33 is provided with a receiving portion 331 that is bent rearward while extending in a planar shape toward the lower side.
By arranging the receiving portion 331 so as to abut on the intersecting portion of the inner wall 141 of the solid portion of the main body member 10 and the peripheral wall of the communication hole 142, the posture control member 30 is controlled at a fixed position in the accommodation space 14. be able to.
Further, the lower end of the rear piece 33 is bent forward so as not to interfere with the main body material 10.

<5> Engagement Mechanism The engagement mechanism A is a mechanism for positioning at least one location between the binding material 20 and the attitude control material 30 and positioning the binding material 20 with respect to the main body material 10. .
In this embodiment, the engagement mechanism A is configured by the engagement relationship between the recess 222 provided in the binding material 20 and the protrusion 321 provided in the posture control material 30.

<6> Usage Mode Next, a usage mode of the wedge binding device according to the present embodiment will be described with reference to FIGS. 1 and 3.

<6.1> Assembly of each member (Fig. 1)
First, the posture control member 30 is inserted from the insertion hole 12 of the main body member 10 and disposed in the accommodation space 14.
Then, the position of the binding material 20 in the front-rear direction is inserted into the insertion hole 12 with the position slightly shifted forward.
Then, with the contact surface 223a below the recess 222, the front piece 32 of the posture control member 30 is pushed backward to place the binding member 20 in the correct position in the front-rear direction. insert.
At this time, the front piece 32 of the posture control member 30 is in a state of being biased forward so as to restore the initial shape.

<6.2> Free-standing posture of binder (FIG. 3 (a))
As insertion of the binding material 20 proceeds, the protruding portion 321 of the attitude control material 30 is pushed forward so as to fill a gap formed by the recess 222 of the sliding portion 22.
At this time, the binding material 20 is positioned so as to maintain a self-supporting posture by the locking state between the recess 222 and the protrusion 321.
Moreover, the lower end of the wedge part 21 is not yet exposed to the notch 11, and the main body material 10 can be accommodated in the flange Y of the column X.
Further, since the self-standing state of the binding material 20 is maintained by the bias of the posture control material 30 described above, the self-standing state is released even if the wedge binding device itself is shaken or tilted. There is nothing.
Therefore, it is not necessary for the worker to be aware of the posture control of the binding material 20 during the attachment work to the flange Y.

  Since the lower end of the sliding portion 22 is exposed from the main body material 10 in the self-standing state of the binding material 20, a rivet 23 or the like may be provided in the through hole 221 to form a retaining portion at the first assembly. .

<6.3> Tightened state of the binder (FIG. 3B)
By hitting the striking portion 212 of the binding material 20 with a hammer, the binding material 20 is pushed down.
At this time, the contact surface 223b above the depression 222 pushes the front piece 32 of the posture control member 30 backward again, so that the protrusion 321 does not interfere with the downward movement of the binding member 20.
In this way, the connecting operation is completed when the wedge portion 21 is sufficiently tightened with the coupling hole Z.

<6.4> Releasing the Tightened State When releasing the connection between the support column X and the horizontal member, such as when the scaffold is dismantled, the lower end of the sliding portion 22 is struck with a hammer to move the binder 20 upward, Releases wedge binding.
At this time, if a retaining portion such as a rivet 23 is provided, the bonding material 20 does not come out of the main body material 10.
Moreover, in the state where the tight state is released, the self-standing posture of the binding material 20 can be easily found by moving the sliding portion 22 up and down with the fingers of the operator.

Next, a second embodiment of the wedge binding device according to the present invention will be described with reference to FIG.
In this embodiment, a convex portion 224 is provided on the back surface of the sliding portion 22 constituting the binding material 20, and the convex portion 224 is placed on the shoulder portion of the protruding portion 321 provided on the front piece portion 32 of the attitude control material 30. In this state, the binder 20 is configured to exhibit a self-supporting posture.
According to the present embodiment, the same effect as that of the first embodiment can be obtained.

Next, a third embodiment of the wedge binding device according to the present invention will be described with reference to FIG.
In this embodiment, a convex portion 224 is provided on the back surface of the sliding portion 22 constituting the binding material 20, and the convex portion 224 is formed in a concave portion 323 in which the front piece 32 on the front surface of the posture control material 30 is recessed on the back surface side. It is comprised so that the self-standing attitude | position of the binding material 20 may be exhibited in the state which is settled.
According to this embodiment, the same effects as those of Embodiments 1 and 2 can be obtained.

A Engagement mechanism X Post Y Flange Z Joint hole 10 Body material 11 Notch 12 Insertion hole 121 Front hole 122 Rear hole 13 Connection part 131 Claw 14 Housing space 141 Inner wall 142 Communication hole 20 Binding material 21 Wedge part 211 Taper 212 Strike Protruding part 22 Sliding part 221 Through hole 222 Depressed part 223 Contact surface 224 Protruding part 23 Rivet 30 Attitude control material 31 Folding part 32 Front piece 321 Protruding part 322 Recess 33 Rear piece 331 Receiving part

Claims (7)

A wedge binding tool that is coupled to a flange provided on the side periphery of the column in the wedge binding type scaffold,
A main body having a notch that can be accommodated so as to sandwich the flange vertically,
A binding material that moves up and down so as to block the notch and can be inserted into a coupling hole provided in the flange;
An attitude control material interposed between the main body material and the binding material and biased forward by an elastic force; and
The binder is
A wedge portion that can be inserted into the coupling hole;
A sliding portion having a contact surface with the posture control material,
The coupling member is positioned with respect to the main body material by engaging the sliding portion and the attitude control material at least at one position in a position where the wedge portion does not hinder the housing operation of the flange by the main body material. Characterized by being possible,
Wedge binding tool. The engagement mechanism between the sliding part and the posture control material is
A recess provided on the back surface of the sliding portion;
A protrusion provided on the front surface of the attitude control material,
When the protruding portion is accommodated in the hollow portion, the binding material can be positioned with respect to the main body material,
The wedge binding tool according to claim 1. The engagement mechanism between the sliding part and the posture control material is
A convex portion provided on the back surface of the sliding portion;
A protrusion provided on the front surface of the attitude control material,
By placing the convex portion on the protruding portion, the binding material can be positioned with respect to the main body material,
The wedge binding tool according to claim 1. The engagement mechanism between the sliding part and the posture control material is
A convex portion provided on the back surface of the sliding portion;
A concave portion provided on the front surface of the posture control material,
When the convex portion is accommodated in the concave portion, the binding material can be positioned with respect to the main body material,
The wedge binding tool according to claim 1. The lower end of the sliding portion is provided with a retaining portion that prevents the binding material from coming out of the main body material,
The wedge binding tool according to any one of claims 1 to 4. The rear end of the main body material has a connecting portion with a horizontal material or a diagonal material constituting a scaffold,
The wedge binding tool according to any one of claims 1 to 5. The main body material is also used as a horizontal material or a diagonal material constituting a scaffold,
The wedge binding tool according to any one of claims 1 to 5.

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