JP5139456B2 - securing bracket - Google Patents

Description

  The present invention relates to a fixing metal fitting in which a screw rod is inserted into a through hole communicating with a closed space or a narrow space and a member to be fastened is tightened with a nut.

  As a fastener for fixing a member to be fastened to a wall surface having a closed internal space in which a bolt cannot be inserted and a nut cannot be screwed by inserting a hand into the back side of the through hole, a blind bolt or the like Blind fasteners called "" are widely used. An example is shown in FIG. The blind fastener 31 includes a screw rod 32 and an anchor head 34 that is rotatably attached to one end side of the screw rod 32 by a pin 33, and a nut 35 is screwed to the screw rod 32 from the other end side. The anchor head 34 is pivotally supported by the pin 33 at a position slightly deviated in one direction from the axial center.

  In order to fix the fastened member 37 on the gantry 36 using the blind fastener 31, first, the anchor head 34 is rotated so that its axis coincides with the axis of the screw rod 32 as shown in FIG. 11B. . Next, together with the anchor head 34, one end side of the screw rod 32 is inserted into the through hole 36a of the mount 36 from the front side, and as shown in FIG. 11C, when the screw rod 32 is rotated 180 ° around the axis, It rotates around the pin 33 due to unbalance and faces in the direction orthogonal to the axis of the screw rod 32. When the screw rod 32 is pulled to the front side of the through hole 36a in this state, the anchor head 34 comes into contact with the back side of the through hole 36a as shown in FIG. 11D. Next, a fastened member 37 is attached on the gantry 36, and the screw rod 32 is inserted into the insertion hole 37 a of the fastened member 37 and fastened with the nut 35.

JP 2004-150604 A (FIGS. 1 to 5)

In the conventional blind fastener 31, when the nut 35 is screwed together, if the screw rod 32 is not held by one hand, the screw rod 32 rotates together. 35 cannot be tightened. It is inefficient to tighten the nut using a manual tool. When it is necessary to make it impossible to remove the fastened member for the purpose of preventing theft or the like, extraneous additional work such as welding a nut after fastening is required.
Therefore, in the invention according to this application, the nut can be easily tightened by using the electric tool without rotating the screw rod, and additional work such as welding of the nut is not required. It is an object of the present invention to provide a fixing bracket that can be fixed to a gantry with difficulty in removing a fastening member.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above-described problems, the fixing metal fitting 1 of the invention according to this application includes a screw rod 2, an anchor head 3, a nut 4 screwed into the screw rod 2, and a pressing member 5. The anchor head 3 is pivotally supported on one end side of the screw rod 2 by a pivot pin 6 penetrating in the direction orthogonal to the axis of the screw head 2, and is inserted substantially parallel to the screw rod 2. It can freely rotate between the lock positions. The nut 4 is screwed to the other end side of the screw rod 2. Pressing member 5 is disposed between the nut 4 and the anchor head 3 is fitted with two workpieces into threaded rod 2 so that pressed on the gantry 36.
The threaded rod 2 has a notch plane 2a on at least a part of its outer periphery. After the screw rod 2 is fitted into the nut 4 and the pressing member 5 , the enlarged portion 2 b can be formed in advance at the other end in the manufacturing factory . The enlarged portion 2 b is formed by crimping and crushing the end portion in the axial direction, or by melting and deforming the end portion, and prevents the nut 4 and the pressing member 5 from coming off from the screw rod 2.
The pressing member 5 includes an insertion hole 5 a having a shape that allows the screw rod 2 to be inserted in a relatively non-rotatable manner, and an engaging portion 5 b that engages the fastened member 37. The engaging portion 5 b can take various different shapes corresponding to the shape of the fastened member 37.

  According to the fixing bracket of the invention according to this application, the engaging portion 5b of the pressing member 5 is engaged with the fastened member 37, so that the nut 4 can be secured using the electric tool without rotating the screw rod 2 together. The tightening operation can be performed efficiently. Since the nut 4 and the pressing member 5 are stopped by the enlarged portion 2b and cannot be removed from the screw rod 2, the fastened member 37 cannot be easily removed and theft or the like can be prevented.

It is a disassembled perspective view of the fixing metal fitting which concerns on this invention. It is a front view of the fixing metal fitting of FIG. It is a side view of the fixing metal fitting of FIG. It is a front view which shows the use condition of the fixing metal fitting of FIG. It is a front view which shows the use condition of the fixing metal fitting of FIG. It is a front view which shows the use condition of the fixing metal fitting of FIG. It is a front view which shows the use condition of the fixing metal fitting of FIG. It is a top view of the pressing member in the fixing metal fitting of FIG. It is a disassembled perspective view of the fixing metal fitting of other embodiment. It is a front view which shows the use condition of the fixing metal fitting of FIG. It is explanatory drawing of the conventional fixing metal fitting.

Embodiments of the present invention will be described with reference to the drawings. The fixture 1 includes a screw rod 2, an anchor head 3, a nut 4 screwed into the screw rod 2, and a pressing member 5. 7 is a plain washer and an 8 spring washer, and is interposed between the nut 4 and the pressing member 5 as necessary.

The anchor head 3 is pivotally supported on one end side of the screw rod 2 by a pivot pin 6 penetrating in the direction orthogonal to the axis of the anchor head 3, and is inserted substantially parallel to the screw rod 2 (FIGS. 4 and 5), It is rotatable between the rod 2 and a lock position (FIGS. 2 and 7) arranged in the orthogonal direction.

The nut 4 is screwed to the other end side of the screw rod 2. Pressing member 5, as shown in FIG. 6, FIG. 7, in the mounted state, is arranged between the workpieces 37 and a nut 4, the screw rod so that pressing both sides of the fastening member 37 on the pedestal 36 2 is fitted.

The screw rod 2 includes a cut-out plane 2a extending from the other end to almost the entire length on the outer periphery thereof. Therefore, the screw rod 2 is formed in a circular cross-sectional cutout shape. In addition, the notch plane 2a is not limited to single. Further, after the nut 4 and the pressing member 5 are fitted to the other end of the screw rod 2, the enlarged portion 2b can be formed in advance at the manufacturing factory. The enlarged portion 2 b is formed by crimping and crushing the end portion in the axial direction, or by melting and deforming the end portion, and prevents the nut 4 and the pressing member 5 from coming off from the screw rod 2.

In the embodiment of FIGS. 1-8, the pressing member 5 is formed by bending a strip-shaped metal plate material, and has a notch circular shape similar to the cross section of the screw rod for allowing the screw rod 2 to be inserted in a relatively non-rotatable manner. An insertion hole 5a is provided. The insertion hole 5a can take various different shapes according to the cross-sectional shape of the screw rod 2 in order to allow the screw rod 2 to be inserted in a relatively non-rotatable manner. The pressing member 5 includes bent engagement portions 5b for engaging with the fastened member 37 at both ends. The engaging portion 5 b can take various different shapes corresponding to the shape of the fastened member 37.
FIG. 9 shows a fixing bracket provided with pressing members 5 having different shapes for application to the fastened members 37 having different shapes.

  In order to fix the member 37 to be fastened on the gantry 36 using the fixing bracket 1, first, the anchor head 3 is rotated, and the anchor head 3 is erected and parallel to the screw rod 2 as shown in FIGS. Place and hold close. Next, together with the anchor head 3, one end side of the screw rod 2 is inserted into the through hole 36a of the mount 36 from the front side, and the anchor head 3 is oriented in the direction orthogonal to the axis of the screw rod 2 by unbalance as shown in FIG. At the same time, the engaging portion 5 b of the pressing member 5 is engaged with the fastened member 37. In this state, the power tool 38 is hung on the nut 4 and tightened. Since the rotation of the screw rod 2 together with the pressing member 5 is restricted, the screw rod 2 does not rotate with the nut 4 and the tightening operation is performed smoothly. Since the nut 4 and the pressing member 5 are stopped by the enlarged portion 2 b and cannot be removed from the screw rod 2, it is impossible to remove the fastened member 37 from the mount 36. As a result, the to-be-fastened member 37 can be prevented from being stolen.

The engaging portion 5b of the pressing member 5 in the other embodiment shown in FIGS. 9 and 10 bends in the opposite direction (upward) to that of the previous embodiment and abuts against the opposite side surfaces of the two fastened members. An interval holding portion that regulates the mutual interval between the two members to be fastened, and a pressing portion that bends outward at a right angle at both ends and engages the upper surfaces of the two members to be fastened, and presses the fastened member onto the gantry. It has. The pressing member 5 is seated on the gantry 36 and engages with fastened members 37 on both sides arranged on the gantry 36, thereby pressing the fastening member 37 onto the gantry 36 and adjacent fastened members. Configured to maintain a distance of

DESCRIPTION OF SYMBOLS 1 Fixing metal fixture 2 Threaded rod 2a Notch plane 3 Anchor head 4 Nut 5 Holding member 5a Insertion hole 5b Engagement part 6 Pivot pin 36 Base 37 Fastened member

Claims (3)

A bracket for fixing two fastened members on a gantry in a state where they are adjacent to each other while maintaining a predetermined interval,
A screw rod having one end passing through the through-hole of the gantry and an intermediate portion extending within the interval between the two fastened members; and a pivot pin penetrating the screw rod in the direction perpendicular to the axis on one end of the screw rod An anchor head pivotally supported and rotatable between an insertion position arranged substantially parallel to the screw rod and a lock position arranged orthogonal to the screw rod; and screwed to the other end of the screw rod nuts and; is disposed between the anchor head and the nut, the two workpieces comprising a pressing member to be fitted to the threaded rod so that pressing on said frame,
The screw rod comprises a cut-out plane at least at a part of the outer periphery ,
The anchor head can pass through the through hole of the gantry together with the screw rod at the insertion position, but is configured in a shape that cannot pass through the through hole at the lock position,
The pressing member includes an insertion hole having a shape that allows the screw rod to pass through in a relatively non-rotatable manner; and an engaging portion that engages with the two fastened members to prevent the screw rod from rotating together during a nut tightening operation. Equipped,
The engaging portion of the pressing member is engaged with the upper surface of the two fastened members and presses the fastened member onto the gantry, and the opposite side surfaces of the two fastened members are in contact with both the fastened members. An adjacent fixing bracket for a panel material, comprising: an interval holding portion that regulates an interval between the fastening members .   The fixing bracket according to claim 1, wherein the screw rod has an enlarged portion at the other end for preventing the nut and the pressing member from coming off.   The screw rod has a single notch plane and is formed in a circular cutout cross section, and the insertion hole of the pressing member has a corresponding cutout circle shape so that the screw rod can be inserted in a relatively non-rotatable manner. The fixing bracket according to claim 1, wherein the fixing bracket is formed.

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