JP2008309200A - Fitting with one-sided locking piece, electrical power tool for the fitting, and fitting installation unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique capable of installation to a floor or a ceiling by handling a fitting with a one-sided locking piece in which a shaft penetrates, from one side of a mounting target member, a through hole formed in the mounting target member and the locking piece provided in a freely rotatable manner is turned on the other side of the mounting target member to make the locking piece engaged with and mounted on the mounting target member. <P>SOLUTION: In the fitting 10 with a one-sided locking piece according to the present invention, a shaft 11 to be inserted into a hole of the mounting target member is formed with a tool engaging portion 17 intended to engage with an electrical power tool 30 for turning the shaft 11. By turning the shaft 11, an engaging piece 13, pivotally supported by the shaft 11 so as to become unbalanced with a spindle 12 defined as the center, can get into a protruded posture perpendicular to an axial direction of the shaft 11 by centrifugal force. The electrical power tool 30 includes a nut locking member 34 used for loosening prevention of a nut 15 screwed on an externally threaded portion 14 of the shaft 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a fitting with a locking piece suitable for use when attaching various articles (attachments) to a hollow structure or the like that cannot be accessed by an operator such as a wall or a ceiling, The present invention relates to an electric tool for a mounting bracket for construction, a mounting bracket construction unit comprising the mounting bracket with a locking piece and the electric tool for mounting bracket.

Conventionally, this type of mounting bracket with a locking piece is provided on one end side of a shaft portion that is sufficiently longer than the thickness of a member to which the mounting bracket with a locking piece (a mounting target member) is attached, such as a component member of a hollow structure. In addition, a support shaft is provided in a direction orthogonal to the axial direction of the shaft portion, and a locking piece is rotatably provided on the support shaft. The locking piece has an axial orientation in which the longitudinal direction is oriented in a direction parallel to the axial direction of the shaft portion by rotation about the support shaft, and the longitudinal direction is the axial center of the shaft portion. It is possible to switch between a projecting posture that is directed in a direction orthogonal to the direction and projects from the shaft portion to both sides (or one side) (see Patent Documents 1 and 2).
When the locking piece is in the overhanging posture, it is in a state of largely protruding out of the range of the diameter of the shaft portion.

The attachment of the mounting bracket with the locking piece having the above structure to the hollow structure is made by opening a hole having a diameter slightly larger than the diameter of the shaft portion at the attachment position of the wall or the like of the hollow structure, The locking piece and the shaft portion thus inserted are inserted, and the locking piece pivotally supported on one end side of the shaft portion is passed through the hole and disposed in the inner space of the hollow structure. Since the mounting piece with the locking piece is rotatably mounted so that the locking piece is unbalanced with respect to the shaft portion around the support shaft, the locking piece rotates by gravity and assumes an overhanging posture. . Thereby, the attachment fitting with a locking piece inserted into the hole of the hollow structure is prevented from coming out from the hole of the wall or the like. Further, by tightening a nut screwed to the male thread portion formed on the shaft portion, the mounting bracket with a locking piece can be attached to the hollow structure (specifically, the wall portion of the hollow structure, the shaft portion and the engagement member). It is possible to fix to a member in which a hole for passing a stop piece is formed. Various articles can be attached to the front side of the hollow structure via the mounting bracket with the locking piece fixed to the hollow structure.
Japanese Utility Model Publication No. 3-14573 JP 11-44311 A

However, the conventional mounting bracket with a locking piece has a construction in which the locking piece that has passed through the hole in the axial orientation is rotated by its own weight and has an overhanging posture. Construction) was impossible.
In addition, when the conventional mounting bracket with a locking piece is fixed to a mounting target member such as a wall (in the case of sideways construction), after the locking piece is passed through the hole, the locking piece rotates and protrudes by its own weight. Since it is necessary to fasten the nut in a state where the shaft portion is fixed in the orientation to be fixed and fix it to a member to be attached (such as a component member of a hollow structure), there was dissatisfaction with workability. For this reason, when many attachment brackets with a locking piece are constructed, there is a problem that the construction time becomes long.

  In view of the above-described problems, an object of the present invention is to provide a mounting bracket with a locking piece, an electric tool for mounting bracket, and a mounting bracket construction unit that can be easily constructed in a short period of time and can realize downward construction on a floor or the like.

In order to solve the above problems, the present invention provides the following configuration.
The first invention is a shaft portion, an elongated locking piece rotatably supported on a support shaft in a direction orthogonal to the axial direction of the shaft portion on one end side of the shaft portion, and the shaft portion A nut screwed to the male screw portion formed on the outer peripheral portion, and the locking piece is turned in a direction parallel to the axial direction of the shaft portion by rotation about the support shaft. A mounting bracket with a locking piece that is switchable between an axial orientation and a projecting orientation in which the longitudinal direction is perpendicular to the axial direction of the shaft. Provided is a mounting bracket with a locking piece, characterized in that a tool engaging portion with which a tool for rotating the shaft portion is engaged is formed on the end side.
According to a second aspect of the present invention, there is provided the mounting bracket with a locking piece according to the second aspect, wherein the tool engaging portion is a polygonal columnar protrusion projecting from the other end of the shaft portion. .
According to a third aspect of the present invention, there is provided the mounting bracket with a locking piece according to the first aspect, wherein the tool engaging portion is a wrench hole recessed from an end surface of the other end portion of the shaft portion.
The fourth aspect of the invention further includes a rotation auxiliary member engaged with the tool engagement portion and mounted so as to be integrally rotatable with the shaft portion, and the rotation auxiliary member is not limited to the shaft portion. Auxiliary member main body formed with a shaft engaging portion that engages with the end portion on the end side and engages in an integrally rotatable manner, and is formed on the side of the auxiliary member main body opposite to the shaft engaging portion. And an auxiliary member tool engaging portion to which a tool for rotating the shaft portion is engaged, and the rotating auxiliary member is entirely or partially a buffer portion made of synthetic resin, A transmission path for transmitting a rotational driving force from the tool fitted to the auxiliary member tool engaging portion to the tool engaging portion of the shaft portion engaged with the shaft portion engaging portion via the buffer portion. The mounting bracket with a locking piece according to any one of the first to third aspects of the invention is provided.
The fifth invention further includes a rotation auxiliary member engaged with the tool engagement portion and mounted so as to be integrally rotatable with the shaft portion, and the rotation auxiliary member is a member other than the shaft portion. Auxiliary member main body formed with a shaft engaging portion that engages with the end portion on the end side and engages in an integrally rotatable manner, and is formed on the side of the auxiliary member main body opposite to the shaft engaging portion. An auxiliary member tool engaging portion to which a tool for rotating the shaft portion is engaged, and the auxiliary member for rotation includes the auxiliary member tool engaging portion and the shaft portion engaging portion. The tool fitted to the auxiliary member tool engaging portion via an easily breakable portion provided in at least one of the auxiliary member tool engaging portion and the shaft portion engaging portion. A transmission path for transmitting a rotational driving force to the tool engaging portion of the shaft portion engaged with the shaft portion engaging portion. Providing locking Katazuki mounting bracket of the fourth invention of any one of that.
6th invention is the said auxiliary | assistant for rotation of the said tool engaging part of the said axial part of the attachment metal fitting with a locking piece of any one of 1-3 invention, or the attachment metal fitting with a locking piece of 4th or 5th invention. An auxiliary tool tool engaging portion of a member, a power tool for a mounting bracket that engages with an engaging portion for rotational force transmission that is a rotating force transmission engaging portion, and a tool main body from which a rotational drive shaft protrudes; A rotational force transmission member provided at a tip of the rotational drive shaft and removably engaged with the rotational force transmission engaging portion of the mounting bracket with the locking piece, and a nut locking member attached to the tool body The nut locking member is mounted on the tool body, and is provided along the rotational drive shaft of the tool body so as to protrude from the mounting section, and the mounting with the locking piece. To the nut screwed to the male threaded portion of the shaft portion of the metal fitting To provide an electric tool mounting bracket, characterized by comprising a nut engaging piece for restricting the rotation of the nut by engagement.
In a seventh aspect of the present invention, the nut locking piece of the nut locking member is formed in a cylindrical shape that houses the rotational drive shaft and the rotational force transmitting member of the tool body, and protrudes from the mounting portion. 6. A mounting according to a sixth aspect of the present invention, wherein a nut locking portion that engages with the nut of the mounting bracket with a locking piece and restricts the rotation of the nut is provided at the tip of the nut locking piece. Provide a power tool for metal fittings.
In an eighth aspect of the present invention, the rotational force transmitting member is detachably fitted to a driving socket provided at a tip of the rotational driving shaft of the tool body, and is attached to the rotational driving shaft. The member includes a fitting portion for fitting that fits into the drive socket, and a shaft portion engaging portion that is engaged with the engaging portion for transmitting the rotational force of the fitting with the locking piece. The rotation auxiliary member is entirely or partially a buffer portion made of synthetic resin, and transmits the rotational force engaged with the shaft engaging portion from the drive socket fitted to the fitting fitting portion. An electric power tool for a mounting bracket according to the sixth or seventh aspect is provided, wherein a transmission path for transmitting a rotational driving force to the engagement portion via the buffer portion is configured.
According to a ninth aspect of the present invention, there is provided a mounting bracket construction unit comprising the mounting bracket with a locking piece according to any one of the first to fifth aspects and the electric tool for a mounting bracket according to any one of the sixth to eighth aspects. provide.

According to the present invention, by using the tool engaging portion (or the auxiliary member tool engaging portion of the rotation auxiliary member) provided in the shaft portion of the mounting bracket with the locking piece, the shaft portion is rotated, The locking piece rotatably provided on the shaft portion by the support shaft can be brought into an overhanging posture by centrifugal force. The locking piece of the mounting bracket with the locking piece is inserted into the hole (through hole) formed in the member to be mounted with the mounting bracket with the locking piece (hereinafter also referred to as mounting target member) along with the shaft portion in the axial orientation. After passing from one side (front side) and placing on the other side (back side) of the attachment target member, the shaft piece is rotated by work on one side (front side) of the attachment target member, so that the locking piece is The posture can be changed to the overhanging posture. For this reason, even if it is downward construction with respect to members, such as a floor (construction which makes the upper side of an attachment object member the "front side"), fixation to an attachment object member is possible.
In addition, the mounting bracket with the locking piece has a shaft in a state where the rotation of the nut screwed to the male thread portion of the shaft portion of the mounting bracket with the locking piece is restricted by the operation on one side (front side) of the member. By rotating the portion, the shaft portion that is inserted through the hole of the attachment target member moves so as to increase the projecting dimension to one side of the member. Engage with the target member. That is, the rotation of the shaft portion is an operation for bringing the locking piece into an overhanging posture and an operation for engaging the locking piece with the attachment target member. For this reason, the operation | work which attaches the attachment metal fitting with a locking piece to an attachment object member can be performed easily in a short time.
Further, if the electric tool for a mounting bracket according to the present invention is used, the nut locking piece of the nut locking member restricts the rotation of the nut screwed to the male thread portion of the shaft portion of the mounting bracket with the locking piece. However, since the shaft portion can be rotated, it is possible to efficiently perform the work of attaching the attachment fitting with the locking piece to the attachment target member.

Hereinafter, a mounting bracket with a locking piece, a power tool for mounting bracket, and a mounting bracket installation unit according to the present invention will be described with reference to the drawings.
1A and 1B are views showing a mounting bracket 10 with a locking piece according to the present invention (hereinafter sometimes abbreviated as mounting bracket), where FIG. 1A is a plan view and FIG. FIG. 2C is an exploded front view, FIG. 2 is a view showing the vicinity of the tool engaging portion 17 on the other end side of the mounting bracket 10, and FIG. 2A is the axial direction of the shaft portion 11. The figure which shows the structure seen from the other end side, (b) is a front view, FIG. 3 (a)-(c) and FIG. 4 (a)-(c) are the figures explaining the construction procedure of the attachment metal fitting 10 in order. It is.

As shown in FIGS. 1A to 1C and FIGS. 2A and 2B, the mounting bracket 10 includes a shaft portion 11 and an axial center direction of the shaft portion 11 on one end side of the shaft portion 11. An elongated locking piece 13 that is rotatably supported by a support shaft 12 in a direction orthogonal to the axis, a nut 15 that is screwed to a male screw portion 14 formed on the shaft portion 11, and an outer portion that is attached to the shaft portion 11. And an inserted washer 15a.
The washer 15 a is provided on the other end side of the shaft portion 11 with respect to the nut 15.
Although the washer 15a is separate from the nut 15, it goes without saying that a nut with a washer in which both are integrated can also be adopted.

The support shaft 12 extends in a direction orthogonal to the axial center direction of the shaft portion 11 so as to cross the locking piece storage groove 16 that divides one end portion (end portion on one end side) of the shaft portion 11 into two. Is provided.
The locking piece storage groove 16 is formed so as to be cut from the tip on one end side of the shaft portion 11 toward the other end side. The groove bottom 16 a located on the other end side in the axial direction of the shaft portion 11 of the locking piece storage groove 16 is located on the other end side of the shaft portion 11 with respect to the support shaft 12.

The locking piece 13 of the mounting bracket 10 is an elongated plate member.
In the longitudinal direction of the locking piece 13, the position of the center of gravity (center of gravity 13 a) is shifted from the center of rotation about the support shaft 12. Hereinafter, with respect to the locking piece 13, the side where the center of gravity 13 a is located from the support shaft 12 is also referred to as the weight side, and the opposite side is also referred to as the lightweight side. With respect to the locking piece 13 of the mounting bracket 10 in the illustrated example, the length from the support shaft 12 to the one end in the longitudinal direction is longer than the length from the support shaft 12 to the other end in the longitudinal direction. The longer side is the weight side and the opposite side is the light side.

In the illustrated example, the locking piece 13 is rotated around the support shaft 12 so that the lightweight side portion is changed to a portion of the locking piece storage groove 16 located on the other end side of the shaft portion 11 from the support shaft 12. Can be stored.
On the other hand, the portion of the locking piece 13 on the weight side, which is longer than the lighter side than the lightweight side, has an extension length L1 from the supporting shaft 12 and the locking piece storage groove 16 from the supporting shaft 12. Since it is longer than the distance L2 to the groove bottom 16a, the locking piece storage groove 16 cannot be stored in the portion located on the other end side of the shaft portion 11 from the support shaft 12.
However, the present invention is not limited to this, and it is also possible to adopt a configuration in which both the locking piece 13 on both sides (weight side and light side) from the support shaft 12 can be stored in the locking piece storage groove 16.

  The locking piece 13 is housed in a portion on the light weight side in a portion located on the other end side of the shaft portion 11 from the support shaft 12 of the locking piece storage groove 16, and the longitudinal direction of the locking piece 13 is that of the shaft portion 11. The axial orientation can be set in a direction parallel to the axial direction. The locking piece 13 has an axial orientation in which the longitudinal direction is directed in a direction parallel to the axial direction of the shaft portion 11 by rotation about the support shaft 12, and the longitudinal direction is the shaft portion. It is possible to switch between the overhanging postures oriented in the direction orthogonal to the axial direction of the eleven axes.

  The locking piece 13 in the axial orientation is positioned within the range of the diameter of the shaft portion 11 having a circular cross section, or slightly protrudes from the range of the diameter of the shaft portion 11. Even when the locking piece 13 in the axial orientation is slightly protruded from the range of the diameter of the shaft portion 11, the protruding dimension of the portion protruding from the range of the diameter of the shaft portion 11 of the locking piece 13 is A hole (for example, FIGS. 3A to 3C) and FIGS. 4A to 4A (FIG. 4A to FIG. It is needless to say that the projecting dimension is so small that it does not hinder the operation of passing through the hole 22) formed in the floor 21 of c).

The end 13b on the weight side of the locking piece 13 in the illustrated example is formed in a triangular shape.
If one end (or both ends) of the locking piece 13 in the longitudinal direction is formed in a triangular shape, the locking piece 13 and the shaft portion 11 are penetrated through the structural member (for example, floor) of the hollow structure. When passing through the hole, it is advantageous for avoiding catching with the inner surface of the hole, and the operation can be performed smoothly.
On the other hand, the end 13c on the lightweight side of the locking piece 13 in the illustrated example forms an end surface perpendicular to the longitudinal direction of the locking piece 13, but the end 13c on the lightweight side is also formed in a triangular shape. Needless to say, you can.

A tool for rotating the shaft portion 11 (for example, the electric tool 30 for mounting bracket illustrated in FIG. 6) is associated with the other end portion of the shaft portion 11 (the end portion opposite to the one end side). A tool engaging portion 17 to be joined is formed.
The groove bottom 16a of the locking piece storage groove 16 and the tool engaging portion 17 are positioned apart from each other in the axial direction of the shaft portion 11 through the external thread portion 14 having a bar shape.

As shown in FIGS. 2A and 2B, the tool engaging portion 17 (rotating force transmitting engaging portion) of the mounting bracket 10 in the illustrated example is specifically the other end portion of the shaft portion 11. These are prismatic projections (small projections, hereinafter also referred to as square portions 171).
However, the tool engaging portion 17 is not limited to the square portion 171, and may be a projection having a polygonal column shape (a cross section perpendicular to the axial direction is a polygon) other than the rectangular column shape such as a hexagonal column shape.
Further, as shown in FIGS. 5A and 5B, a rectangular or hexagonal wrench hole 172 that is recessed from the other end surface 11a of the shaft portion 11 (in FIGS. 5A and 5B, a rectangular wrench). Hole) etc. can also be adopted.
The tool engaging portion 17 is formed on the shaft center of the shaft portion 11 in order to smoothly rotate the shaft portion 11 around the shaft center of the shaft portion 11 by a tool.

(Electric tool for mounting bracket)
Next, the mounting bracket power tool 30 (hereinafter also simply referred to as a power tool) will be described.
As shown in FIG. 6, the electric power tool 30 is provided with a tool main body 31 containing a motor (not shown), and projecting on the tool main body 31 (specifically, projecting on a motor built-in portion 311 of the tool main body 31). A rotational force transmitting member provided at the tip of the rotational drive shaft 32 so as to be rotatable integrally with the rotational drive shaft 32 and detachably engaged with the tool engaging portion 17 of the shaft portion 11 of the mounting bracket 10. 33 and a nut locking member 34 for restricting the rotation of the nut 15 screwed to the male threaded portion 14 of the shaft portion 11 of the mounting bracket 10.
In the illustrated electric power tool 30, the rotational force transmission member 33 and the rotational drive shaft 32 are an integral part, but the rotational force transmission member 33 is detachable from the rotational drive shaft 32. Can also be adopted.

The rotational force transmitting member 33 is formed with a shaft engaging portion 33 a that is detachably engaged with the tool engaging portion 17 of the shaft 11 of the mounting bracket 10. The rotational force transmission member 33 is rotated integrally with the rotational drive shaft 32 in a state in which the shaft portion engaging portion 33a is engaged with the tool engaging portion 17 of the shaft portion 11, thereby rotating the rotational drive shaft. The rotational driving force of 32 is transmitted to the shaft part 11 and the shaft part 11 is rotated.
For example, as shown in FIGS. 3B and 3C and FIGS. 4A to 4C, when the tool engaging portion 17 is a polygonal columnar protrusion, As the shaft portion engaging portion 33a, an engagement hole 33a1 that is detachably engaged with the tool engaging portion 17 of the shaft portion 11 of the mounting bracket 10 is formed.

  When the tool engaging portion 17 is a wrench hole 172 (FIGS. 5A and 5B), the shaft engaging portion 33a of the rotational force transmitting member 33 is removably fitted into the wrench hole 172. Thus, a protrusion (for example, a protrusion 33a2 in FIG. 13) that engages with the shaft portion 11 and can transmit the rotational driving force of the rotational drive shaft 32 to the shaft portion 11 is formed. It goes without saying that the protrusion is formed in a shape that engages the shaft portion 11 so that the rotational driving force of the rotational driving shaft 32 can be transmitted in accordance with the shape of the wrench hole 172. For example, quadrangular columnar and hexagonal columnar protrusions are employed for the rectangular and hexagonal wrench holes 172.

As shown in FIG. 6, the nut locking member 34 includes a mounting portion 341 for mounting to the tool body 31 and a nut locking piece 342 projecting from the mounting portion 341.
The nut locking member 34 illustrated in FIG. 6 has a cylindrical female threaded portion 341a as a mounting portion 341 at one end (end on one side in the axial direction) of a cylindrical nut locking piece 342, one as a whole. It is formed in a cylindrical shape.

  The nut locking member 34 is configured such that the female screw portion 341 a is screwed to the male screw cylindrical portion 31 a of the tool body 31, which is a cylindrical projecting wall surrounding the rotation drive shaft 32, and the inner side of the nut locking piece 342 is engaged. The rotary drive shaft 32 and the rotational force transmission member 33 of the tool body 31 are accommodated (see FIG. 3C) and attached to the tool body 31. The male screw cylindrical portion 31a protrudes from one end in the axial direction of the external cylindrical motor built-in portion 311. The rotary drive shaft 32 of the tool body 31 penetrates from the motor built-in portion 311 to the inside of the male screw cylindrical portion 31a. And protruding.

  The end (tip) of the nut locking piece 342 on the side opposite to the mounting portion 341 is a hexagonal hole into which the nut 15 screwed to the male screw portion 14 of the mounting bracket 10 can be fitted. A nut locking portion 342b is formed by opening 342a. The nut locking piece 342 is extrapolated from the other end side to the shaft portion 11 of the mounting bracket 10 and the nut 15 is fitted into the nut locking portion 342a, whereby the rotation of the nut 15 can be restricted. As a result, as shown in FIG. 3C and the like, the shaft portion 11 is driven to rotate through the rotational force transmitting member 33 engaged with the tool engaging portion 17 of the shaft portion 11 of the mounting bracket 10. When rotating the shaft portion 11 by transmitting the rotational driving force of the shaft 32, the rotation of the nut 15 relative to the shaft portion 11 can be restricted.

The attachment portion 341 of the nut locking member 34 for attaching to the tool main body 31 is not limited to the female screw portion 341a for screwing to the tool main body 31, and various configurations can be adopted.
As an example, FIG. 7 illustrates a nut locking member 34 (denoted by reference numeral 34A in the drawing) including an attachment portion 341b that is mounted so as to surround the external cylindrical portion 311 having a cylindrical shape. In the case of the nut locking member 34A, the nut locking member 34A can be mounted on the tool body 31 that does not include the male thread cylindrical portion 31a. The nut locking member 34A illustrated in FIG. 7 includes a cover-like attachment portion 341b that is attached so as to cover the outer surface of the motor built-in portion 311. However, the attachment portion is not limited to this, and for example, binding It is also possible to employ one that is attached to the motor built-in portion 311 by a fixing band.
Further, various design changes can be made to the nut locking pieces of the nut locking member 34. The nut locking piece is not limited to the cylindrical shape as described above as long as it functions to prevent the nut 15 of the mounting bracket 10 from rotating. For example, a rod-shaped support protruding from the mounting portion It is also possible to employ a configuration having a nut locking portion engaged with the nut 15 at the tip of the piece.

The electric power tool 30 illustrated in FIG. 6 has a structure in which a handle portion 312 for a user to grip is protruded from a side portion (outer peripheral surface) of a motor built-in portion 311 having a cylindrical shape.
A drive button 313 for forward rotation of the motor (hereinafter referred to as a forward drive button) and a drive button 314 for reverse rotation (hereinafter referred to as a reverse drive button) are projected from the handle portion 312. The motor of the tool body 31 is driven to rotate only when the forward rotation drive button 313 or the reverse rotation drive button 314 is pushed into the handle portion 312. When the button is pushed back to the state where it protrudes from the handle portion 312 by releasing the pushing force, the rotational drive is stopped.
Here, “forward rotation” is a rotation drive that gives the shaft portion 11 rotation to the positive screw in the screwing direction, and “reverse rotation” is rotation that gives the shaft portion 11 rotation to the positive screw in the direction opposite to the screwing direction. Refers to driving.
The electric power tool 30 can be attached to various sockets such as a drill by exchanging the socket attached to the rotary drive shaft 32.

The male thread portion 14 and the nut 15 of the mounting bracket 10 are formed with positive thread threads.
Positive thread threads are also formed on the male thread cylindrical portion 31 a of the tool main body 31 of the electric power tool 30 and the female thread portion 341 a of the nut locking member 34.
When the mounting bracket 10 is constructed (fixed to a wall, floor, ceiling, etc.) using the power tool 30 described above, the tool of the shaft portion 11 of the mounting bracket 10 as shown in FIG. The motor 17 of the electric power tool 30 is driven to rotate in the reverse direction (described later) while the engaging portion 17 is engaged with the rotational force transmitting member 33 fixed to the tip of the rotary driving shaft 32. Since the male thread cylindrical portion 31a of the tool body 31 and the female thread portion 341a of the nut locking member 34 are formed with positive thread threads, the male thread cylinder of the tool body 31 is driven by the rotational driving force transmitted from the nut 15. There is no concern about the loosened state of the nut locking member 34, which is fixed by tightening the female screw portion 341a with respect to the portion 31a.
The mounting bracket 10 and the power tool 30 constitute a mounting bracket construction unit according to the present invention.

(Construction method)
Next, the construction procedure of the mounting bracket 10 will be described.
3 (a) to 3 (c) and FIGS. 4 (a) to 4 (c) sequentially show the procedure in the case of constructing the mounting bracket 10 on the mounting target member 21. FIG.
3A to 3C and FIGS. 4A to 4C illustrate the floor as the attachment target member 21 (hereinafter also simply referred to as a member), and the mounting bracket 10 is used. The case where the attachment 24 is fixed on the floor 21 is shown.
A working space for rotating operation of the shaft portion 11 of the mounting bracket 10 is provided on one of the two sides via the member 21 (a front side described later. In the figure, above the floor 21). Is secured. Further, the entire locking piece 13 of the mounting bracket 10 can be arranged on the other side (the back side described later, below the floor 21 in the drawing), and the locking piece by the rotation of the shaft portion 11 can be arranged. A sufficient space (locking piece rotation space, space 23) to allow 13 rotations is secured.

3 (a) to 3 (c) and 4 (a) to 4 (c), the attachment 24 is fixed to the member 21 (here, the floor) using the mounting bracket 10 by the work on the front side of the member 21. The case will be described.
As shown in FIG. 3A, first, the attachment 24 is superposed on the member 21 (in the figure, the attachment 24 is placed on the floor 21), and the attachment 24 and the member 21 are attached using a drill or the like. A through hole 22 (through hole) is formed. The hole 22 is formed with a diameter (inner diameter) slightly larger than the outer diameter of the shaft portion 11 of the mounting bracket 10. In addition, as the attachment 24, you may employ | adopt the thing in which the hole for letting the attachment metal fitting 10 pass previously was formed.
Next, the locking piece 13 of the mounting bracket 10 and the shaft portion 11 are passed through the hole 22 (FIG. 3B), and then the electric tool 30 is set on the mounting bracket 10 (FIG. 3C). After that, the electric tool 30 is driven to rotate the shaft portion 11 of the mounting bracket 10 (FIGS. 4A and 4B).

As shown in FIG. 3 (b), the mounting bracket 10 is configured so that the locking piece 13, which is in the axial orientation by the work from the front side (one side, the upper surface side of the floor 21) of the member 21, together with the shaft portion 11 Then, it is inserted into the hole 22 from the attachment 24 side.
As shown in FIG. 3C, the set of the electric tool 30 with respect to the mounting bracket 10 is a rotational force transmitting member 33 attached to the tip of the rotary drive shaft 32 to the tool engaging portion 17 of the shaft portion 11 of the mounting bracket 10. And the nut locking portion 342b at the tip of the nut locking member 34 of the electric tool 30 is engaged with the nut 15 of the mounting bracket 10 so as to be engaged.

The locking piece 13 needs to be disposed entirely on the back side of the member 21 before driving the electric tool 30. Further, the nut 15 that is screwed to the male screw portion 14 of the shaft portion 11 is pressed against the member 21. The nut 15 has a shaft so that it can be engaged with the nut locking portion 342b of the nut locking member 34 of the electric power tool 30 in which the rotational force transmitting member 33 is engaged with the tool engaging portion 17 of the shaft portion 11. The screwing position of the part 11 in the axial direction is adjusted.
The mounting bracket 10 is sufficiently long in view of the length of the hole 22 so that the entire locking piece 13 can be disposed on the back side of the member 21 when the nut 15 is pressed against the attachment 24. The one having the shaft portion 11 is adopted.

The driving of the electric tool 30 is rotation in the reverse direction.
When the shaft portion 11 of the mounting bracket 10 is rotated by the rotational drive of the electric tool 30 (rotational drive in the reverse direction), the shaft portion 11 is guided by the nut 15 that is prevented from rotating by the nut locking member 34, and the member It moves so that the protrusion dimension to the front side of 21 may increase (FIG. 4 (a), (b)).

Further, at this time, the locking piece 13 of the mounting bracket 10 is brought into an overhanging posture by the rotation applied to the shaft portion 11. The locking piece 13 assumes an overhanging posture due to the centrifugal force applied by the rotation of the shaft portion 11.
When the member 21 is a floor, the construction of the mounting bracket 10 is a downward construction. When the locking piece 13 of the mounting bracket 10 passes through the floor 21 by being inserted into the hole 22 and is disposed in the space 23 (locking piece rotation space) on the lower side (back side) of the floor 21, the weight of the locking piece 13 is reduced. It becomes an axial orientation posture. In the present invention, the locking piece 13 of the mounting bracket 10 is brought into the overhanging posture by the rotation applied to the shaft portion 11 by the electric power tool 30, so that the construction can be performed even in the downward construction.
Further, as described above, the rotated shaft portion 11 moves so as to increase the protrusion dimension of the member 21 to the front side while being guided by the nut 15 that is prevented from rotating by the nut locking member 34. Then, the locking piece 13 in the overhanging posture can be engaged with the member 21 (FIG. 4B). Thereby, the attachment metal fitting 10 is latched by the member 21, and the extraction from the member 21 is controlled.

That is, according to the present invention, by rotating the shaft portion 11 with the electric tool 30, the locking piece 13 of the mounting bracket 10 is brought into the overhanging posture, and the engagement of the locking piece 13 with the member 21 is also realized. .
When the locking piece 13 is engaged with the member 21, the attachment 24 is pressed into the member 21 by the nut 15 and the washer 15 a, and the member 21 and the attachment 24 are connected to the nut 15, the washer 15 a, and the locking piece 13. The mounting bracket 10 is fixed to the member 21 because it is sandwiched between them. Fixing of the mounting bracket 10 to the member 21 is also realized.
Thereby, fixation of the attachment 24 with respect to the member 21 and fixation of the attachment metal fitting 10 are realizable in a short time.
Moreover, since the mounting bracket 10 according to the present invention can be installed downward, as described above, the mounting bracket 10 is not limited to the case where the mounting bracket 10 is fixed to the floor by work from above the floor. It can be constructed even at the construction site. That is, there is no limitation for the construction direction.

  After the locking piece 13 is engaged with the member 21, the nut 15 is further tightened (for example, tightened with 5 N · m. FIG. 4C) using the hand tool 40 to obtain a desired fixing force. However, tightening of the nut 15 shown in FIG. 4C is performed when the fixing force of the mounting bracket 10 to the member 21 is sufficiently secured by adjusting the rotational torque by the electric tool 30 or the like. In the case where a strong fixing force is not required (in the case where it is necessary to fix the member 21 with a weak fixing force in view of the material of the member 21), it can be omitted.

Needless to say, the present invention is not limited to the construction (attachment) of the mounting bracket 10 to the floor 21 of the building, but can also be applied to, for example, construction (attachment) to a ceiling or a wall.
For example, when installing a mounting bracket with a conventional structure on a wall, the locking piece that has passed through the wall through a hole formed in the wall changes its position from the axial orientation to the overhanging posture by its own weight. It is necessary to fix the orientation of the shaft portion of the mounting bracket manually and tighten the nut that is screwed to the male screw portion of the shaft portion while maintaining this state. On the other hand, the installation of the mounting bracket 10 according to the present invention is inserted into the hole 22 to rotate the shaft portion 11 so that the locking piece 13 is brought into an overhanging posture by the centrifugal force applied to the locking piece 13. The adjustment of the orientation of the shaft portion 11 is unnecessary, and the rotation of the shaft portion 11 itself is also an operation of engaging the locking piece 13 with the member 21, so that it can be easily performed in a shorter time than conventional. .

Further, the mounting bracket 10 according to the present invention has a structure in which a tool engaging portion 17 is formed at the other end of the shaft portion 11 as a configuration for placing the locking piece 13 in an overhanging posture. There is no need for a means for setting 13 to an overhanging posture.
As a configuration for setting the locking piece 13 in an overhanging posture, if the tool engaging portion 17 is formed at the other end of the shaft portion 11, the portion of the mounting bracket 10 that is inserted into the hole 22 There is no need to provide a configuration that hinders the insertion operation into the hole 22. For this reason, the attachment metal fitting 10 can be made into the structure which can insert smoothly into the hole 22 of the axial part 11 and the latching piece 13. FIG.

As shown in FIGS. 4A to 4C and the like, on the outer peripheral surface of the male screw portion 14 of the shaft portion 11, a loosening prevention portion 18 which is a rubber-based resin coating for preventing the nut 15 from loosening is provided on the shaft portion. 11 extending along the axial direction.
When the nut 15 is tightened with respect to the member 21 in the steps shown in FIGS. 4B and 4C, the nut 15 is positioned in the formation range of the loosening prevention portion 18 in the axial direction of the shaft portion 11. To do. Thereby, loosening of the tightening state is prevented.

Needless to say, the mounting bracket 10 can be fixed to the member 21 without the attachment 24 interposed between the nut 15 and the washer 15a and the member 21.
The mounting bracket 10 that has been attached to the member can separately use the portion of the shaft portion 11 protruding from the nut 15 (protruding from the nut 15 to the side opposite to the member 21) to fix the attachment.

(Another aspect of electric tools)
8 and 9, the rotational force transmitting member 33 is detachably fitted to the drive socket 35 provided integrally with the distal end of the rotational drive shaft 32 of the tool body 31 so that the rotational drive shaft 32 is attached to the rotational drive shaft 32. An example in which the unit is configured to be integrally rotatable is shown.
The rotational force transmission member 33 illustrated here (denoted by reference numeral 36 in the drawing) is protruded from the block-shaped transmission member main body 361 and the transmission member main body 361, and is inserted into the bit fitting hole 35 a of the drive socket 35. A fitting projection 362 (fitting fitting portion) to be fitted and a shaft portion engaging portion 33a formed on the opposite side of the transmission member main body 361 from the fitting projection 362 are provided. The rotational force transmitting member 36 is attached to the rotary drive shaft 32 of the tool body 31 so as to be integrally rotatable by fitting the fitting protrusion 362 into the bit fitting hole 35a of the drive socket 35. The shaft portion engaging portion 33a may be either an engaging hole 33a1 or a protrusion (in the illustrated example, the engaging hole 33a1).
The transmission member main body 361 of the rotational force transmission member 36 in the illustrated example has a columnar shape, and the fitting protrusion 362 and the shaft portion engaging portion 33 a are formed on the axis of the transmission member main body 361. However, the shape of the transmission member main body 361 is not limited to a cylindrical shape, and may be a prismatic shape, for example.

As the rotational force transmission member 36, for example, an integrally molded product made of synthetic resin can be adopted. In this case, the entire rotational force transmission member 36 functions as a buffer portion according to the present invention. In the case of this rotational force transmitting member 36, the tool of the shaft portion 11 engaged with the shaft portion engaging portion 33a from the drive socket 35 in which the fitting portion for fitting (fitting protrusion 362) is fitted. The entire transmission path of the rotational driving force of the rotational drive shaft 11 to the engaging portion 17 is configured by the buffer portion made of synthetic resin.
In the buffer portion, the locking piece 13 comes into contact with the member 21 by the movement of the shaft portion 11 of the mounting bracket 10 rotated by using the electric tool 30 (movement that increases the protruding dimension of the member 21 to the front side). Shock is shocked. Thereby, the effects of preventing damage to the member 21 due to impact force and preventing damage to the tool engaging portion 17 of the shaft portion 11 are obtained. Further, it is possible to prevent a problem that the user of the power tool 30 drops the power tool 30 when the impact is strong.

As the rotational force transmission member 33, a configuration in which only a part of the rotational force transmission member 33 is provided with a buffer portion may be employed.
For example, the rotational force transmission member 33 (denoted by reference numeral 37 in the drawing) shown in FIG. 10A is a synthetic resin that constitutes the transmission member main body 361 by insert molding of the metal member 371 constituting the fitting projection 362. It has a structure embedded and fixed inside. The rotational force transmitting member 37 has the same configuration as the auxiliary rotation member illustrated in FIGS. 8 and 9 except for the embedding and fixing of the metal member 371. The other components than the metal member 371 are made of synthetic resin. In the rotational force transmitting member 37, the synthetic resin portion functions as the buffer portion 372.
In the case of the rotational force transmitting member 37, the tool of the shaft portion 11 engaged with the shaft portion engaging portion 33a from the drive socket 35 fitted to the fitting portion for fitting (fitting protrusion 362). A part of the transmission path of the rotational driving force of the rotational drive shaft 11 to the engaging portion 17 is constituted by the buffer portion made of synthetic resin.

The rotational force transmitting member 33 (denoted by reference numeral 38 in the figure) shown in FIG. 10B is a fitting protrusion 362 and shaft portion of the transmitting member main body 361 of the rotational force transmitting member 33 shown in FIGS. A narrow portion 381 in which the transmission member main body 361 is locally narrowed is provided in the central portion (center portion in the axial direction of the transmission member main body 361) between the joint portion 33a.
In the case of the rotational force transmitting member 38, a high buffering effect is obtained by the deformation of the narrow portion 381. Further, by adjusting the thickness of the narrow portion 381, excessive impact is caused when the locking piece 13 is brought into contact with the member 21 due to movement of the shaft portion 11 (movement that increases the protruding dimension of the member 21 to the front side) accompanying rotation. When a force is generated, the narrow portion 381 can be broken, and the influence of an impact acting on the electric power tool 30 and the mounting bracket 10 can be reduced.

(Mounting bracket with locking piece with auxiliary member for rotation)
FIGS. 11A and 11B show a mounting bracket 10 having a rotation auxiliary member (hereinafter, this mounting bracket will be described with reference numeral 50).
The mounting bracket 50 has a configuration in which a cap-shaped auxiliary member for rotation 51 is fitted and attached to the other end of the shaft portion 11 of the mounting bracket 10 described above. That is, the mounting bracket 50 has a configuration in which the auxiliary rotation member 51 is added to the mounting bracket 10 described above.

The rotation auxiliary member 51 includes a block-shaped auxiliary member main body 511, a shaft portion engaging portion 512 that is engaged with the tool engaging portion 17 of the shaft portion 11, and a tool for rotating the shaft portion 11. For example, an auxiliary member tool engaging portion 513 (rotating force transmitting engaging portion) with which the electric tool 30 is engaged is formed.
Then, as shown in FIG. 12, the tool engaged with the auxiliary member tool engaging portion 513 (FIG. 12) with the shaft engaging portion 512 engaged with the tool engaging portion 17 of the shaft 11. Then, it is rotated integrally with the shaft portion 11 by being rotated by the electric tool 30).
The shaft engaging portion 512 and the auxiliary member tool engaging portion 513 of the rotation auxiliary member 51 are formed so as to be located on the axis of the shaft portion 11.

  The shaft engaging portion 512 of the auxiliary rotation member 51 illustrated in FIGS. 11A, 11 </ b> B, and 12 is a polygonal columnar protrusion (specifically, a square portion 171) of the shaft 11. An engagement hole 512 a that engages with the tool engagement portion 17 by fitting a certain tool engagement portion 17. The engagement hole 512 a is a recess formed in the auxiliary member main body 511. The rotation auxiliary member 51 is engaged with the tool engaging portion 17 of the shaft portion 11 by fitting the shaft portion engaging portion 512 (the engagement holes 512a in FIGS. 11A and 11B and FIG. 12). The shaft portion engaging portion 512 is engaged with the tool engaging portion 17 so as to be able to transmit a rotational driving force from the tool, and can rotate integrally with the shaft portion 11.

  The shaft engaging portion 512 of the auxiliary rotation member 51 is engaged with the tool engaging portion 17 of the shaft portion 11 so as to transmit a rotational driving force from the tool to the tool engaging portion 17. Therefore, the design can be changed as appropriate according to the tool engaging portion 17 of the shaft portion 11. For example, as illustrated in FIGS. 5A and 5B, when the tool engaging portion 17 is a wrench hole 172, a protruding shaft engaging portion protruding from the auxiliary member main body 511 is employed. The protruding shaft engaging portion is formed in a shape that engages the tool engaging portion 17 so that the rotational driving force can be transmitted from the tool by being inserted into the wrench hole 172 and fitted therein. In this case, the rotation auxiliary member 51 may be configured to be attached to the shaft portion 11 only by the fitting force between the protruding shaft portion engaging portion and the wrench hole 172. A configuration in which a fitting cylindrical wall is provided so as to surround the protruding shaft engaging portion, and the other end of the shaft portion 11 is fitted inside the fitting cylindrical wall (cap shape) Can also be adopted.

The rotation auxiliary member 51 is attached to the shaft portion 11 by fitting the shaft portion engaging portion 512 to the tool engaging portion 17 of the shaft portion 11.
The rotation auxiliary member 51 in the illustrated example is in a state in which the other end portion of the shaft portion 11 is fitted inside the auxiliary member main body 511 by fitting the engagement hole 512a with the tool engagement portion 17 of the shaft portion 11. The shaft portion 11 is mounted. The engagement hole 512 a is a space inside the fitting cylindrical wall 515 that protrudes from the auxiliary member main body 511. The fitting cylindrical wall 515 is formed so as to surround the shaft portion engaging portion 512.

The auxiliary member tool engaging portion 513 is formed on the side opposite to the shaft engaging portion 512 in the auxiliary member main body 511.
The auxiliary member tool engaging portion 513 of the auxiliary member 51 for rotation of the mounting bracket 50 in the illustrated example is specifically a prismatic protrusion 513a (square portion), but is not limited to this, for example, a hexagonal columnar shape or the like The projection may be a polygonal columnar shape other than a prismatic shape (a cross section perpendicular to the axial direction is a polygon). Further, as shown in FIG. 13, the auxiliary member tool engaging portion 513 may be a concave wrench hole 513b formed in the auxiliary member main body 511, such as a square hole or a hexagonal hole.

12 and 13 show a state where the rotational force transmission member 33 of the electric tool 30 is engaged with the auxiliary member tool engaging portion 513 of the auxiliary member 51 for rotation of the mounting bracket 50.
However, as described with reference to FIG. 6 and the like, the electric tool 30 exemplified here is directly attached to the rotational drive shaft 32 and directly attached to the rotational drive shaft 32 without using the drive socket 35. The rotational force transmitting member 33) is provided.

The electric tool 30 engages the shaft portion engaging portion 33 a of the rotational force transmitting member 33 with the auxiliary member tool engaging portion 513 of the rotation auxiliary member 51 of the mounting bracket 50. Further, the nut locking member 34 is engaged with the nut 15 of the mounting bracket 50.
In order to allow the nut locking member 34 to be engaged and disengaged with respect to the nut 15 of the mounting bracket 50, the auxiliary rotation member 51 is provided in a range that does not protrude from the outer peripheral surface of the nut 15 in a state of being attached to the shaft portion 11. Size and shape.

The shaft engaging portion 33a of the rotational force transmitting member 33 of the electric tool 30 is fitted into the auxiliary member tool engaging portion 513 in accordance with the shape of the auxiliary member tool engaging portion 513 of the rotation auxiliary member 51 of the mounting bracket 50. Needless to say, a configuration in which the rotational drive force of the rotational drive shaft 32 can be engaged so as to be transmitted can be adopted.
As shown in FIG. 13, when the auxiliary member tool engaging portion 513 is a wrench hole 513b, a projection 33a2 that can be engaged by being fitted in the wrench hole 513b is employed as the shaft portion engaging portion 33a.

As the auxiliary member 51 for rotation, for example, an integrally molded product made entirely of synthetic resin can be adopted. In this case, the entire rotation auxiliary member 51 functions as the buffer portion according to the present invention. In the case of the auxiliary member 51 for rotation, the entire transmission path of the rotational driving force of the rotational driving shaft 11 from the rotational force transmitting member 33 of the electric tool 50 to the tool engaging portion 17 of the shaft portion 11 is made of synthetic resin. Thus, the shock when the locking piece 13 comes into contact with the member 21 by the rotation of the shaft portion 11 can be buffered.
Moreover, as the auxiliary member 51 for rotation, the structure which formed one part with the metal member similarly to the rotational force transmission member 37 illustrated to Fig.10 (a), for example can also be employ | adopted. However, even when a part is a metal member, all or part of the transmission path of the rotational driving force of the rotational drive shaft 11 from the rotational force transmission member 33 of the electric tool 50 to the tool engaging portion 17 of the shaft portion 11. Is constituted by a buffer part made of synthetic resin.

FIGS. 14A and 14B show an example in which an easily breakable portion 516 is provided in the auxiliary rotation member 51.
An easily breakable portion 516 shown in FIG. 14A is a narrow portion 516a in which a part of the auxiliary member main body 511 is locally narrowed. The narrow portion 516a is destroyed by the impact force when the locking piece 13 comes into contact with the member 21 by the rotation of the shaft portion 11, and the shaft portion is engaged from the auxiliary member tool engaging portion 513 side of the auxiliary member 51 for rotation. The rotational driving force of the electric tool is not transmitted to the part 512.

14B, in the rotation auxiliary member 51 employing the engagement hole 512a as the shaft engagement portion 512, a plurality of portions other than the auxiliary member tool engagement portion 513 (two in FIG. 14B) are provided. The structure divided | segmented by the slit 516b of) is illustrated. The entire portion other than the auxiliary member tool engaging portion 513 functions as an easily breakable portion.
The slits 516 b extend in a direction along the axis of the rotation auxiliary member 51 (rotation center; coincides with the axis of the shaft portion 11), and are provided at a plurality of locations in the outer circumferential direction of the rotation auxiliary member 51. Is formed. In the case of the auxiliary member 51 for rotation, when an impact force is applied when the locking piece 13 comes into contact with the member 21 by the rotation of the shaft portion 11, portions other than the auxiliary member tool engaging portion 513 are engaged. The hole 512a is deformed so as to be enlarged, and the engagement of the shaft portion engaging portion 512 with the tool engaging portion 17 (projection) of the shaft portion 11 is released. Further, at this time, the rotation auxiliary member 51 falls off from the shaft portion 11 or can be easily removed.

The easy-to-break portion 516 is configured to be broken when an impact force exceeding the set breaking strength or an excessive rotational torque is applied by adjusting the breaking strength. However, it is needless to say that the breaking strength sufficient to enable the shaft portion 11 for the installation of the mounting bracket 50 is ensured.
Note that the rotation auxiliary member 51 having the configuration in which the easily breakable portion 516 is provided does not necessarily need to be made of a synthetic resin, and for example, an entirely metal member can be adopted. However, it is preferably made of a synthetic resin in terms of obtaining a buffering effect for buffering an impact when the locking piece 13 comes into contact with the member 21 by the rotation of the shaft portion 11 and in terms of manufacturability.

The configuration of the rotation auxiliary member 51 for obtaining a buffering effect for buffering an impact when the locking piece 13 comes into contact with the member 21 by the rotation of the shaft portion 11 is not limited to the above.
For example, due to the clearance between the shaft engaging portion 512 and the tool engaging portion 17 of the shaft portion 11, the shaft portion is caused by an impact force when the locking piece 13 contacts the member 21 due to the rotation of the shaft portion 11. It is also possible to employ a configuration in which the rotation auxiliary member 51 slides and rotates with respect to the eleven tool engaging portions 17.

  As an electric tool for rotating the shaft portion 11 of the mounting bracket 50 including the auxiliary member 51 for rotation, as illustrated in FIG. 8, the rotational force is transmitted to the rotational drive shaft 32 via the drive socket 35. An electric tool having a configuration in which the member 33 is attached can also be employed.

FIG. 15 illustrates a case where the electric tool 301 that does not include the nut locking member 34 is employed.
The electric power tool 301 has a configuration in which the nut locking member 34 and the external thread cylindrical portion 31a of the tool main body 31 for attaching the nut locking member 34 are omitted from the electric power tool 30 described above.
In the case of FIG. 15 as well, engaging the rotational force transmitting member 33 of the electric tool 301 with the auxiliary member tool engaging portion 513 of the auxiliary member for rotation 51 of the mounting bracket 50 is the same as in FIGS. However, a hand tool 40 such as a wrench is used to restrict the rotation of the nut 15 when the shaft portion 11 rotates.

In addition, this invention is not limited to the above-mentioned embodiment, It is possible to change a design suitably in the range which does not change the main point.
(A) In the above-described embodiment, the position of the center of gravity (center of gravity 13a) of the elongated plate-like locking piece 13 is shifted from the center of rotation about the support shaft 12 in the longitudinal direction of the locking piece 13. The length of one end in the longitudinal direction from the support shaft 12 of the locking piece 13 is exemplified as being longer than the length from the support shaft 12 to the other end in the longitudinal direction. As shown in FIG. 16, an elongated plate-like locking piece 13 is formed with a hole 13d penetrating the thickness of the locking piece 13 (in FIG. 11, this locking piece 13 is denoted by reference numeral 13A). It is also possible to do.
In this case, the lengths of the portions of the locking piece extending from the support shaft 12 to the both sides can be made equal to each other. It is possible to prevent the rotation radius of the locking piece during the rotation of the shaft portion 11 from being unnecessarily large as compared with the case where the lengths are different. Further, it is possible to reduce the weight of the locking piece, thereby reducing the rotational force required to rotate the shaft portion 11, and the locking piece abutting against the target member to which the mounting bracket is fixed. It is possible to alleviate the impact.
(B) The member (attachment target member) to which the mounting bracket is fixed is not limited to the structural member of the hollow structure, and various members can be employed. The mounting bracket according to the present invention can secure a working space for rotating the shaft portion on one side via a member to which the mounting bracket is fixed, and the hole formed in the member on the other side. The entire locking piece inserted with the shaft portion from one side of the member and passed through the member can be arranged, and the space (engagement sufficient to enable rotation of the locking piece by the rotation of the shaft portion). If it is the construction place which can ensure a (stop piece rotation space), the attachment work with respect to a member can be performed.
(C) The locking piece of the mounting bracket with the locking piece according to the present invention is configured such that when the shaft portion is rotated (rotation about an axis about the shaft center of the shaft portion), the support shaft is centered by centrifugal force. The center of gravity is not necessarily limited to a configuration in which the center of gravity is shifted from the center of rotation about the support shaft in the longitudinal direction of the locking piece.
In the present invention, for example, a support shaft insertion hole for allowing a support shaft to pass through the locking piece is formed larger than the thickness of the support shaft, and the support shaft insertion hole passes through the support shaft insertion hole. The structure etc. which ensured the clearance which enables the locking piece to move with respect to a spindle are also included. The support shaft insertion hole may be, for example, a long hole.

It is a figure which shows the attachment metal fitting with a locking piece concerning this invention, Comprising: (a) is a top view, (b) is a figure which shows the structure seen from the one end side of a axial part, (c) is a front view. It is a figure which shows the tool engaging part vicinity of the other end side of the attachment metal fitting with a locking piece of FIG. 1, Comprising: (a) is a figure which shows the structure seen from the axial direction other end side of the axial part, (b) It is a front view. (A)-(c) is a construction procedure figure which shows the procedure in the case of constructing the attachment metal fitting with a locking piece in the structural member (floor) of a hollow structure in order. (A)-(c) is a construction procedure figure which shows the procedure in the case of constructing the attachment metal fitting with a locking piece in the structural member (floor) of a hollow structure in order. It is a figure which shows the structure which used the tool engaging part of the axial part of the attachment metal fitting with a locking piece as the wrench hole recessed from the other end side end surface of an axial part, Comprising: (a) is an axial direction other end side of an axial part The figure which shows the structure seen from (b) is a front view. It is a figure which shows an example of the electric tool for mounting brackets concerning this invention. It is a figure which shows another aspect of the nut latching member of the electric tool for mounting brackets. It is a figure which shows another aspect of the auxiliary member for rotation of the electric tool for attachment metal fittings. It is a perspective view which shows the drive socket and auxiliary member for rotation of the electric tool for mounting brackets of FIG. (A), (b) is a figure which shows another aspect of the auxiliary member for rotation. It is a figure which shows the tool engaging part vicinity of the other end side of the attachment bracket with a locking piece which comprises the auxiliary member for rotation, (a) is a figure which shows the structure seen from the axial direction other end side of the axial part, (B) is a front view. It is a figure which shows the state which engaged the rotational force transmission member of the electric tool for attachment metal fittings to the auxiliary member tool engagement part of the auxiliary member for rotation of the attachment metal fitting with a locking piece of FIG. It is a figure which shows another aspect of the auxiliary member tool engaging part of the auxiliary member for rotation of the attachment metal fitting with a locking piece of FIG. 11, and another aspect of the rotational force transmission member of the electric tool for attachment metal fitting. It is a figure which shows the example of the auxiliary member for rotation provided with the easily breakable part, Comprising: (a) is a front sectional view which shows the example which provided the narrow part as an easily breakable part, (b) is the auxiliary for rotation provided with the slit. It is a perspective view which shows the example of a member. It is a figure explaining the case where the attachment metal fitting with a locking piece is constructed using the electric tool which is not equipped with the nut locking member. It is a figure which shows the attachment metal fitting with a locking piece which comprises the locking piece which formed the hole.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Mounting bracket with a locking piece, 11 ... Shaft part, 11a ... End surface on the other end, 12 ... Support shaft, 13, 13A ... Locking piece, 13a ... Center of gravity, 13b ... End part on the weight side, 13c ... End part, 13d ... hole, 14 ... male screw part, 15 ... nut, 16 ... locking piece storage groove, 16a ... groove bottom, 17 ... tool engaging part, 171 ... tool engaging part (square part), 172 ... tool Engagement part (wrench hole), 18 ... Loosening prevention part, 21 ... Attachment target member (floor), 22 ... Hole (through hole), 23 ... Space (locking piece rotation space), 24 ... Attachment, 30 ... Attachment Power tool for metal fitting, 31 ... Tool body, 31a ... Male thread cylindrical part, 301 ... Electric tool, 311 ... Motor built-in part, 312 ... Handle part, 313 ... Drive button for forward rotation, 314 ... Drive button for reverse rotation, 32 ... Rotation drive Shaft, 33 ... Auxiliary member for rotation, 33a ... Shaft engaging portion, 33a1 ... Shaft Engagement portion (engagement hole), 34, 34A ... nut locking member, 341 ... mounting portion, 341a ... mounting portion (female screw portion), 341b ... mounting portion, 342 ... nut locking piece, 342a ... hexagonal hole, 342b DESCRIPTION OF SYMBOLS Nut latching part, 35 ... Drive socket, 35a ... Bit fitting hole, 36 ... Auxiliary member for rotation, 361 ... Auxiliary member main body, 362 ... Fitting part for fitting (fitting protrusion), 37 ... Auxiliary member for rotation 371 ... Metal member, 372 ... Buffer part, 38 ... Rotary auxiliary member, 381 ... Narrow part, 40 ... Hand tool, 50 ... Mounting bracket with locking piece, 51 ... Rotary auxiliary member, 511 ... Auxiliary member main body, 512 ... shaft part engaging part, 512a ... engaging hole, 513 ... auxiliary member tool engaging part, 513a ... auxiliary member tool engaging part (protrusion), 513b ... auxiliary member tool engaging part (wrench hole), 515 ... fitting Cylindrical cylindrical wall, 516. a ... frangible portion (narrow portion), 516b ... slit.

Claims (9)

A shaft portion, an elongated locking piece rotatably supported on a support shaft in a direction orthogonal to the axial direction of the shaft portion on one end side of the shaft portion, and a male screw portion formed on the shaft portion An axial orientation in which the longitudinal direction of the locking piece is oriented in a direction parallel to the axial direction of the shaft portion by rotation about the support shaft. A mounting bracket with a locking piece that is switchable between a projecting posture in which the longitudinal direction is oriented in a direction orthogonal to the axial direction of the shaft portion,
A mounting bracket with a locking piece, wherein a tool engaging portion with which a tool for rotating the shaft portion is engaged is formed on the other end side of the shaft portion.   2. The mounting bracket with a locking piece according to claim 1, wherein the tool engaging portion is a polygonal columnar protrusion protruding from the other end portion of the shaft portion.   The attachment tool with a locking piece according to claim 1, wherein the tool engaging portion is a wrench hole recessed from an end surface of the other end portion of the shaft portion. Furthermore, it comprises an auxiliary member for rotation that is engaged with the tool engaging portion and is mounted so as to be integrally rotatable with the shaft portion,
The auxiliary member for rotation includes an auxiliary member main body formed with a shaft engaging portion that engages with an end portion on the other end side of the shaft portion so as to be integrally rotatable and the auxiliary member main body. An auxiliary member tool engaging portion that is formed on the opposite side of the shaft portion engaging portion and that is engaged with a tool for rotating the shaft portion;
In addition, the rotation auxiliary member is entirely or partially a buffer portion made of synthetic resin, and the tool engaged with the auxiliary member tool engaging portion is engaged with the shaft portion engaging portion. The mounting bracket with a locking piece according to any one of claims 1 to 3, wherein a transmission path for transmitting a rotational driving force to the tool engaging portion of the shaft portion via the buffer portion is configured. Furthermore, it comprises an auxiliary member for rotation that is engaged with the tool engaging portion and is mounted so as to be integrally rotatable with the shaft portion,
The auxiliary member for rotation includes an auxiliary member main body formed with a shaft engaging portion that engages with an end portion on the other end side of the shaft portion so as to be integrally rotatable and the auxiliary member main body. An auxiliary member tool engaging portion that is formed on the opposite side of the shaft portion engaging portion and that is engaged with a tool for rotating the shaft portion;
In addition, the rotation auxiliary member is provided in at least one of the auxiliary member tool engaging portion, the shaft engaging portion, and the auxiliary member tool engaging portion and the shaft engaging portion. Rotational driving force is transmitted from the tool fitted to the auxiliary member tool engaging portion to the tool engaging portion of the shaft portion engaged to the shaft portion engaging portion via the easily breakable portion. The mounting bracket with a locking piece according to any one of claims 1 to 4, wherein a transmission path is formed. The said auxiliary member tool of the said auxiliary member for rotation of the said tool engagement part of the said axial part of the attachment metal fitting with a locking piece in any one of Claims 1-3, or the attachment metal fitting with a locking piece of Claim 4 or 5 An electric tool for a mounting bracket that engages with an engaging portion for rotating force transmission that is an engaging portion, and rotates the shaft portion,
A tool main body from which a rotational drive shaft is projected; and a rotational force transmission member that is provided at a tip of the rotational drive shaft and is detachably engaged with the engagement portion for rotational force transmission of the mounting bracket with the locking piece; A nut locking member attached to the tool body,
The nut locking member is provided with an attachment portion attached to the tool main body, and provided along the rotational drive shaft of the tool main body so as to protrude from the attachment portion, and the shaft portion of the attachment fitting with the locking piece. And a nut locking piece for restricting rotation of the nut by engaging with the nut screwed to the male screw portion.   The nut locking piece of the nut locking member is formed in a cylindrical shape that houses the rotational drive shaft and the rotational force transmission member of the tool body, and the nut locking piece protruding from the mounting portion The power tool for a mounting bracket according to claim 6, wherein a nut locking portion that engages with the nut of the mounting bracket with the locking piece and restricts rotation of the nut is provided at a tip. The rotational force transmission member is detachably fitted to a drive socket provided at the tip of the rotary drive shaft of the tool body and is attached to the rotary drive shaft.
The rotational force transmission member includes an attachment fitting portion that fits into the drive socket, and a shaft portion engagement portion that engages with the rotational force transmission engagement portion of the mounting piece with the locking piece. ,
In addition, the rotation auxiliary member is entirely or partially made of a synthetic resin buffer, and is engaged with the shaft engaging portion from the drive socket fitted to the fitting fitting portion. The electric tool for a mounting bracket according to claim 6 or 7, wherein a transmission path for transmitting a rotational driving force to the engaging portion for transmitting the rotational force via the buffer portion is configured.   A mounting bracket construction unit comprising the mounting bracket with a locking piece according to any one of claims 1 to 5 and the electric tool for mounting bracket according to any one of claims 6 to 8.

Images