JP3410715B2 - Fixing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device used for firmly fixing sheet metal fittings used in, for example, a concrete form holding device to a wall surface, and retains even if a large force is applied. The present invention relates to a fixing device in which a member does not come out of a mounting hole.

[0002]

2. Description of the Related Art Conventionally, when a concrete wall is formed on the outer surface side of a wall body such as a mountain retaining wall or a continuous underground wall, the end portion of the sheet metal fitting is fixed to the wall body and the sheet metal fitting is also used. To the base end of the, one end side of the separator is screwed and connected,
A method is adopted in which the concrete frame is supported from the inside by a pecon attached to the other end of the separator, and ready-mixed concrete is placed between the frame and the wall body.

By the way, conventionally, as a method of fixing the tip portion of the sheet metal fitting to the wall body, a screw member is attached to the H-shaped steel forming the wall body, and the sheet metal fitting is screwed and connected to this screw member. Generally, when there is no H-shaped steel at the position where the sheet metal fittings should be fixed, a mounting hole is formed in the wall body, and a retaining member and a retaining block are provided in the mounting hole. Further, a method is employed in which the operation shaft is arranged, the retaining member is fixed in the mounting hole by operating the operation shaft, and then the sheet pile support fitting is connected to the operation shaft. The inventors of the present invention have previously proposed a fixing device of this type as shown in, for example, Japanese Patent Laid-Open No. 8-303004.

[0004]

In the fixing device previously proposed by the present inventors, the retaining member is attached only by mounting the electric tool on the end of the sheet metal fitting and rotating the sheet metal fitting. Since it can be fixed in the hole, it has the advantage of extremely good workability, etc. However, if a force of 1 ton or more is applied to the sheet metal fitting, the retaining member will slip out of the mounting hole. , There is a problem that the formwork collapses.

The present invention has been made in view of the present situation, and even when a large force is applied to the operating shaft,
It is an object of the present invention to provide a fixing device in which the retaining member does not come out of the mounting hole.

Another object of the present invention is to provide a fixing device capable of further increasing the fixing force of the retaining member to the mounting hole.

Another object of the present invention is to provide a fixing device capable of further improving the biting strength of the protrusion to the inner peripheral surface of the mounting hole.

Another object of the present invention is to provide a fixing device having a simplified structure.

Another object of the present invention is to provide a fixing device capable of deforming a deforming portion more smoothly.

Another object of the present invention is to provide a fixing device capable of adjusting the moving speed of the retaining block by adjusting the pitch of the male screw tip.

Another object of the present invention is to provide a fixing device in which a retaining member, a retaining block, and an operating shaft can be attached in advance to the tip end position of the sheet metal fitting.

Another object of the present invention is to provide a fixing device in which only the retaining member, the retaining block, and the operating shaft are previously fixed in the mounting holes, and the sheet metal fitting can be mounted at any time. is there.

Another object of the present invention is to provide a fixing device capable of operating the operating shaft to fix the retaining member in the mounting hole without pressing the retaining member.

Another object of the present invention is to provide a fixing device which does not have a problem that the operation shaft interferes with the work even when the reinforcing bar is arranged on the front side of the mounting hole. There is.

Another object of the present invention is to provide a fixing device capable of completely suppressing the return of the once deformed deformed portion.

Still another object of the present invention is to provide a fixing device capable of stabilizing the fixing force of the retaining member to the mounting hole.

[0017]

In order to achieve the above object, the present invention has a cylindrical shape having a deformable portion which is inserted into a mounting hole formed in a wall surface and is divided into a plurality of circumferentially divided portions at an insertion tip end portion. A retainer member; a retainer block disposed on the tip side of the retainer member and having an operation portion that deforms the deformable portion on at least a part of the peripheral surface; the retainer block on the retainer member side by rotation around an axis And an operating shaft for deforming the deformable portion to the outer diameter side to fix the retaining member in the mounting hole; and an operating portion of the retaining block that gradually expands toward the tip. ; continuously on the distal end side of the tapered portion, the pressing portion and forming a tapered surface or substantially parallel plane nearly parallel than the tapered portion; projecting stepped radially outwardly disposed on the distal end position of the pressing portion,
The stepped portion and the abutting portion with which the tip end surface of the deforming portion abuts; And
By configuring the operation part of the retaining block with the tapered part and the pressing part, the pressing part can prevent the deformed part expanded by the tapered part from returning to the inner diameter side after passing through the tapered part. This makes it possible to significantly improve the fixing force of the retaining member in the mounting hole. Further, since the abutting portion with which the tip end surface of the deforming portion abuts is provided at the tip position of the pressing portion, the retaining block is prevented from entering the retaining member more than necessary, and the deforming portion once deformed It will be possible to completely suppress the return of.

According to the present invention, there is further provided a tubular retaining member which is inserted into a mounting hole formed in a wall surface and has a plurality of deformed portions at the insertion tip portion in the circumferential direction; and a distal end side of the retaining member. And a retaining block having an operation portion for deforming the deforming portion on at least a part of the peripheral surface; and moving the retaining block toward the retaining member side by rotation about an axis to move the deforming portion to the outer diameter side. An operation shaft for fixing the retaining member in the mounting hole by deforming the retaining member; and a taper portion that gradually expands the operating portion of the retaining block toward the tip; And a pressing portion that has a tapered surface or a substantially parallel surface that is closer to parallel than the tapered portion, and the retaining member has a large inner diameter portion corresponding to the deformed portion and a small inner diameter portion other than that portion. Stepped in between Is provided with a regulating portion, this restricting portion, stepped formed between the tapered portion proximal end and the operating shaft
The retaining portion is brought into contact with the retaining portion so as to have a function of restricting the amount of the retaining block entering the retaining member. As a result, like the abutting portion, the retaining block does not enter the retaining member more than necessary, and the fixing force of the retaining member in the mounting hole can be stabilized.

The present invention is also characterized in that the outer peripheral surface on the insertion tip side of the deformable portion is provided with a protrusion that bites into the inner surface of the mounting hole. As a result, when the deformed portion is expanded to the outer diameter side by the retaining block, the protruding portion bites into the inner surface of the mounting hole, further increasing the fixing force of the retaining member to the mounting hole. It becomes possible.

The present invention is also characterized in that the projection has a shape elongated in the circumferential direction. As a result, it becomes possible to significantly improve the proof stress against the force of pulling out the retaining member from the mounting hole.

The present invention is also characterized in that the retaining block is integrally connected to the operating shaft. As a result, the retaining member and the operating shaft can be simultaneously manufactured from a single material, and the cost can be reduced by simplifying the structure.

The present invention is also characterized in that the retaining block is rotatably connected to the operating shaft.
As a result, the retaining block can be moved to the retaining member side without rotating, and even if the contact resistance with the deforming portion, especially the contact resistance in the rotation direction is large, the deforming portion can be smoothly moved. It becomes possible to transform into. Therefore, the outer peripheral surface of the retaining block is
It does not necessarily have to be circular, and there is no particular problem even if it is non-circular such as polygonal.

The present invention is also characterized in that the retaining block is screwed into the male thread portion at the tip of the operating shaft. With this, even if the rotation speed of the operation shaft is constant, it is possible to adjust the moving speed of the retaining block by adjusting the pitch of the male threaded end portion.

The present invention is also characterized in that the base end portion of the operating shaft is provided with a base end male screw portion to be screwed to the sheet metal fitting. This makes it possible to previously attach the retaining member, the retaining block, and the operation shaft to the tip position of the sheet metal fitting, similarly to fixing the sheet metal fitting to the screw member fixed to the wall surface. In the work of
It becomes possible to attach the sheet metal fittings to the wall surface.

The present invention is also characterized in that the base end portion of the operating shaft is provided with a tool hanging portion for mounting and operating the tool in the axial direction. With this, it is possible to directly operate the operating shaft with a tool without using the sheet metal fittings, and only the retaining member, the retaining block and the operating shaft are previously fixed in the mounting holes, and the sheet metal fittings are attached. It can be installed at any time.

The present invention is also characterized in that an intermediate male screw portion screwed into the female screw portion of the retaining member is provided in the intermediate portion of the operation shaft. Thus, even if the retaining member is not pressed, it is possible to operate the operation shaft to fix the retaining member in the mounting hole.

The present invention is further characterized in that the base end portion of the operating shaft is located in the mounting hole. As a result, the retaining member, the retaining block and the operating shaft are all accommodated in the mounting hole,
Even when reinforcing bars are installed on the front side of the mounting holes, there is no risk that the operation shaft will interfere with the work.

[0028]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings. FIG. 1 shows a fixing device according to a first embodiment of the present invention. The fixing device 1 is inserted into a mounting hole 3 formed in a wall body 2 such as a mountain retaining wall or a continuous underground wall. The fixing device 1 is provided with a retaining member 5, a retaining block 6, and an operating shaft 7 that are arranged. The fixing device 1 is preliminarily attached to the tip of a sheet metal fitting 8 and the sheet metal fitting 8 is attached to a tool body 9 of an electric tool. It is firmly fixed in the mounting hole 3 by rotating the same.

As shown in FIGS. 1 and 2, the retaining member 5 is formed in a cylindrical shape having a diameter slightly smaller than the inner diameter of the mounting hole 3, and the slit 1 is formed at the tip of its insertion.
The deformable portion 10 is divided into a plurality of pieces in the circumferential direction by 0a.

The deformable portion 10 of the retaining member 5 is shown in FIG.
As shown in FIG. 5, the inner diameter is formed to be larger than that of the other portion, so that the stepped regulation portion 11 is formed between the deformation portion 10 and the other portion. There is. A retaining block 6 to be described later comes into contact with the restricting portion 11 to prevent the retaining block 6 from further entering the retaining member 5.

Further, on the outer peripheral surface of the tip of the deforming portion 10,
As shown in FIG. 2, by providing a ring groove 12 at a position near the base end of the burr at the tip, a protrusion 13 for engaging the inner peripheral surface of the mounting hole 3 is provided. The part 13 has a long shape in the circumferential direction. As a result, the biting strength to the inner peripheral surface of the mounting hole 3 can be improved.

As shown in FIGS. 1 and 3, the retaining block 6 includes an operating portion 14 for deforming the deforming portion 10 to the outer diameter side, and a flange-like portion formed at the tip of the operating portion 14, for example. The contact portion 15 can prevent the retaining block 6 from further entering the retaining member 5 by contacting with the deforming portion 10. There is.

As shown in FIG. 3, the operating portion 14 has a frustoconical taper portion 1 whose diameter gradually increases toward the tip.
6 and a pressing portion 17 that is continuous to the tip end side of the taper portion 16. The pressing portion 17 has a smaller taper angle than the taper portion 16, that is, a truncated cone shape that is nearly parallel. The pressing portion 17 can prevent the deformed portion 10 deformed to the outer diameter side by the taper portion 16 from returning to the inner diameter side after passing through the taper portion 16.

On the other hand, as shown in FIGS. 1 and 3, the operating shaft 7 is composed of a male screw member which is connected to the base end of the tapered portion 16 in a stepped manner.
Has an integral structure with the retaining block 6, and its length is set so as not to project from the mounting hole 3.
Then, as shown in FIG. 1, a sheet metal fitting 8 is screwed and coupled to a base end portion of the operation shaft 7.
As a result, the fixing device 1 can be attached to the sheet metal fitting 8 in advance.

The sheet metal fitting 8 is, as shown in FIG.
The tip end portion of the cylindrical member is provided with a tip female screw portion 8a, and the base end portion is reduced in diameter to provide a female screw portion 8b for a separator on the inner surface thereof. For example, a hexagonal nut-shaped tool mounting portion 8c for mounting the tool body 9 in the axial direction is provided in the portion.

Next, the operation of this embodiment will be described. When fixing the fixing device 1, first, as shown in FIG. 1, a mounting hole 3 is formed in the wall body 2 by using a tool such as a drill.

Next, the fixing device 1 is attached to the tip of the sheet metal fitting 8.
Attach and insert into the mounting hole 3 in this state. Then, the tool body 9 is attached to the tool attachment portion 8c of the sheet metal fitting 8, and the tool body 9 is rotated by using, for example, an electric tool having a torque limiting mechanism. At this time, the tool body 9 presses the sheet metal fitting 8 toward the wall 2 side. Then,
Since the tip of the retaining block 6 comes into contact with the bottom of the mounting hole 3 to prevent rotation, as a result, the retaining member 5
Also, the rotation of the operation shaft 7 is blocked, and only the sheet metal fitting 8 rotates.

For this reason, the operating shaft 7 is screwed toward the sheet metal fitting 8 side, and the deformable portion 10 of the retaining member 5 is deformed to the outer diameter side by the movement of the retaining block 6, and the inner surface of the mounting hole 3 is moved. Will eat into. As a result, the retaining member 5
Is fixed in the mounting hole 3, and together with this, the operating shaft 7 is also fixed in the mounting hole 3.

By the way, the operation portion 1 of the retaining block 6
Reference numeral 4 includes a taper portion 16 and a pressing portion 17. Here, in the case where there is only the tapered portion 16 as in the conventional case, there is no member on the distal end side of the deformable portion 10 that suppresses the deformation return to the inner diameter side after the tapered portion 16 has passed, so that the mounting hole 3 There is a problem that a large fixing force cannot be obtained because it returns to the inner diameter side without biting into the inner surface,
In the present embodiment, since the pressing portion 17 can prevent the deformation return of the tip end side of the deformation portion 10 toward the inner diameter side, the protrusion 13 at the tip end of the deformation portion 10 is surely bited into the inner surface of the mounting hole 3. I can do it.

Then, the operation portion 1 of the retaining block 6
Since 4 is composed of the tapered portion 16 and the pressing portion 17, the deformable portion 10 of the retaining member 5 can be surely bited into the inner surface of the mounting hole 3. Therefore, the fixing force of the retaining member 5 in the mounting hole 3 can be significantly improved.

In the first embodiment,
The case where both the restricting portion 11 and the contact portion 15 are provided in order to restrict the amount of the retaining block 6 entering the retaining member 5 has been described, but the desired effect can be expected with only one of them.

Further, in the first embodiment,
The case where the pressing portion 17 of the operating portion 14 has a taper shape similar to the taper portion 16 has been described, but the outer edge may be a parallel surface, that is, a bar shape having the same diameter at various places, and if the taper angle is small. The tapered shape may be such that the diameter gradually decreases toward the contact portion 15.

In addition, in the first embodiment,
The retaining member 5, the retaining block 6, and the operating shaft 7
However, the case where all are housed in the mounting hole 3 has been described, but the proximal ends of the operation shaft 7 and the retaining member 5 may be projected from the mounting hole 3 to the outside. By doing so, even if the sheet metal fitting 8 has a larger diameter than the mounting hole 3, the fixing device 1 can be fixed in the mounting hole 3 without any problem.

FIG. 4 shows a second embodiment of the present invention, in which a fixing device 21 is used in place of the fixing device 1 in the first embodiment.

That is, as shown in FIG. 4, the fixing device 21 is provided with a retaining member 25, a retaining block 26 and an operating shaft 27. By rotating the operating shaft 27 directly with the tool body 9 or the like. , Can be firmly fixed in the mounting hole 3.

As shown in FIG. 4, the retaining member 25 has a structure in which a female screw portion 25a is provided on the inner peripheral surface in addition to the configuration of the retaining member 5 in the first embodiment. The retaining member 25 is adapted to be screwed to an operation shaft 27, which will be described later, via the female screw portion 25a.

The retaining block 26 is shown in FIG.
As shown in FIG. 5, in addition to the structure of the retaining block 6 in the first embodiment, the retaining hole 26 and the recess 29 are provided, and the retaining block 26 has the retaining hole 28 and the recess 29. Via the operation shaft 2 to be described later
It is designed to be rotatably attached to the tip of 7.

On the other hand, as shown in FIG. 4, the operating shaft 27 is formed of a male screw material having a tip head portion 27a and a tool mounting portion 27b at the base end.
By passing the operating shaft 27 through the insertion hole 28 with the 7a arranged in the recess 29, the retaining block 26 is rotatably attached to the distal end portion of the operating shaft 27, and the retaining shaft 25 is attached to the retaining member 25. The fixing device 21 can be assembled without being separated by being screwed into the female screw portion 25a. The other points are the same as those of the first embodiment, and the operation is the same.

Although the fixing device 21 in this embodiment can be attached to the tip of the sheet metal fitting 8 in advance, the operating shaft 27 can be directly operated by the tool body 9 or the like. Attach only the fixing device 21 in advance
The sheet metal fitting 8 (see FIG. 1) can be connected to the operation shaft 27 when the mold is assembled.

In the case of the fixing device 1 according to the first embodiment as well, it is possible to fix the fixing device 1 in the mounting hole 3 and then remove the sheet metal fitting 8 by rotating it in the reverse direction. In the case of the fixing device 21 in the present embodiment, it is not necessary to remove the sheet pile holding metal fitting 8.

FIG. 5 shows a third embodiment of the present invention, in which a fixing device 31 is used in place of the fixing device 1 in the first embodiment.

That is, as shown in FIG. 5, the fixing device 31 is provided with a retaining member 35, a retaining block 36 and an operating shaft 37. By rotating the operating shaft 37 directly with the tool body 9 or the like. , Can be firmly fixed in the mounting hole 3.

As shown in FIG. 5, the retaining member 35 has the same structure as the retaining member 5 in the first embodiment, and the retaining block 36.
Is the retaining block 6 in the first embodiment.
In addition to the above configuration, a female screw portion 36a is provided at the shaft center portion.

As shown in FIG. 5, the operating shaft 37 is made of a male screw material having a tool mounting portion 37b at its base end, and the female screw portion 36a is formed at the distal end of the operating shaft 37. The retaining block 36 is screwed and connected via the stopper block 36. The other points are the same as those of the first embodiment, and the operation is the same.

In the fixing device 31 of this embodiment, however, the operating shaft 37 can be directly operated by the tool body 9 or the like, so that the same effect as that of the second embodiment can be expected. Further, by adjusting the pitch of the male screw of the operation shaft 37, the moving speed of the retaining block 36 can be adjusted even if the rotation speed of the operation shaft 37 is constant.

In the third embodiment,
The fixing shaft 31 is attached to the mounting hole 3 by rotating the operating shaft 37 directly.
Although the case of fixing inside is explained, it may be attached to the tip of the sheet metal fitting 8 in advance.

In this case, however, the operating shaft 37 may not rotate. In this case, the tip female screw portion 8a of the sheet metal fitting 8 is adjusted so that the operating shaft 37 is screwed into the female screw portion 8a by a certain amount. So that it won't be screwed in anymore,
It is preferable that the sheet metal fitting 8 and the operating shaft 37 rotate integrally.

Further, in the above-mentioned respective embodiments, the retaining members 5, 25, 35 and the retaining blocks 6, 2 are provided.
Although the case where 6 and 36 have a circular cross section has been described, there is no particular problem even if they have a non-circular shape such as a polygonal cross section.

In each of the above-described embodiments, the case where the sheet metal fitting 8 is attached to the wall 2 has been described as an example. However, hook engaging fittings or the like may be attached to the operation shafts 7, 27 and 37. If so, it can be applied as a hook fixing device or the like.

Further, the present invention is not limited to the above-mentioned respective embodiments, and the configurations in the above-mentioned respective embodiments can be used in combination with each other.

[0061]

As described above, according to the present invention, there is provided a tubular retaining member which is inserted into a mounting hole formed in a wall surface and has a plurality of deformed portions in the circumferential direction at the insertion tip end portion; A retaining block arranged on the tip side of the retaining member and having an operating portion for deforming the deformable portion on at least a part of the peripheral surface; moving the retaining block to the retaining member side by rotation around an axis; An operation shaft for fixing the retaining member in the mounting hole by deforming the deformable portion to the outer diameter side;
And a taper portion that gradually expands the operation portion of the retaining block toward the tip; and a pressing portion that is continuous with the tip end side of the taper portion and has a tapered surface or a substantially parallel surface that is closer to parallel to the taper portion. And an abutting portion which is provided at the tip position of the pressing portion and projects in a stepped shape toward the outer diameter side, and the tip end surface of the deforming portion comes into contact with the stepped portion. Therefore, by configuring the operation part of the retaining block with the taper part and the pressing part, the deformation part expanded by the taper part does not return to the inner diameter side after passing through the taper part. With this, it is possible to greatly improve the fixing force of the retaining member in the mounting hole. Further, since the abutting portion with which the tip end surface of the deforming portion abuts is provided at the tip position of the pressing portion, the retaining block is prevented from entering the retaining member more than necessary, and the deforming portion once deformed Can completely suppress his return.

The present invention also includes a tubular retaining member which is inserted into a mounting hole formed in a wall surface and has a plurality of circumferentially divided deformable portions at the insertion distal end; and the distal end side of the retaining member. And a retaining block having an operation portion for deforming the deforming portion on at least a part of the peripheral surface; and moving the retaining block toward the retaining member side by rotation about an axis to move the deforming portion to the outer diameter side. An operation shaft for fixing the retaining member in the mounting hole by deforming the retaining member; and a taper portion that gradually expands the operating portion of the retaining block toward the tip; And a pressing portion that has a tapered surface or a substantially parallel surface that is closer to parallel than the tapered portion, and the retaining member has a large inner diameter portion corresponding to the deformed portion and a small inner diameter portion other than that portion. Stepped in between Is provided with a regulating portion, this restricting portion, stepped formed between the tapered portion proximal end and the operating shaft
Since the retaining block has a function of restricting the amount of the retaining block coming into the retaining member, the retaining block is provided with a retaining member more than necessary like the abutting portion. Since it does not enter the inside, the fixing force of the retaining member in the mounting hole can be stabilized.

Further, according to the present invention, since the projecting portion that bites into the inner surface of the mounting hole is provided on the outer peripheral surface of the deformable portion on the insertion tip side, the deformable portion is expanded to the outer diameter side by the retaining block. In this case, the protrusion will bite into the inner surface of the mounting hole, and the fixing force of the retaining member to the mounting hole can be further increased.

Further, according to the present invention, since the projection is formed to be long in the circumferential direction, the proof stress against the force of pulling out the retaining member from the mounting hole can be greatly improved.

Further, according to the present invention, since the retaining block is integrally connected to the operating shaft, the retaining member and the operating shaft can be simultaneously manufactured from a single material, which simplifies the structure. Therefore, the cost can be reduced.

Further, according to the present invention, since the retaining block is rotatably connected to the operation shaft, the retaining block can be moved to the retaining member side without rotating, and the retaining block can be moved to the deforming portion. Even if the contact resistance of, especially, the contact resistance in the rotation direction is large, the deformable portion can be smoothly deformed. Therefore, the outer peripheral surface of the retaining block does not necessarily have to be circular, and may have a non-circular shape such as a polygonal shape.

Further, according to the present invention, the retaining block is screwed to the male thread portion at the tip of the operation shaft.
Even if the rotation speed of the operation shaft is constant, the moving speed of the retaining block can be adjusted by adjusting the pitch of the male screw tip.

Further, according to the present invention, since the base end portion of the operating shaft is provided with the base end male screw portion to be screwed to the sheet metal fitting, the retaining member and the retaining member are provided at the tip of the sheet metal fitting. The block and the operation shaft can be attached in advance, and the sheet pile holding metal fitting can be attached to the wall surface by the same operation as that of fixing the sheet pile holding metal fitting to the screw member fixed to the wall surface.

Further, according to the present invention, the base end portion of the operating shaft is provided with the tool hooking portion for mounting and operating the tool in the axial direction. The operation axis can be operated and the retaining member,
By fixing only the retaining block and the operation shaft in the mounting hole in advance, metal fittings such as sheet metal fittings can be mounted at any time.

Further, according to the present invention, since the intermediate male screw portion screwed to the female screw portion of the retaining member is provided in the intermediate portion of the operating shaft, the operating shaft can be operated without pressing the retaining member. The retaining member can be operated and fixed in the mounting hole.

Further , according to the present invention, since the base end portion of the operating shaft is located in the mounting hole, the retaining member, the retaining block and the operating shaft are all accommodated in the mounting hole, and the mounting is performed. Even when reinforcing bars are installed on the front side of the hole, there is no risk that the operation shaft will interfere with the work.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a fixing device according to a first embodiment of the present invention.

FIG. 2 is a detailed view showing the configuration of the retaining member of FIG.

FIG. 3 is a detailed view showing a configuration of a retaining block of FIG.

FIG. 4 is a view, corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 5 is a view, corresponding to FIG. 1, showing a third embodiment of the present invention.

[Explanation of symbols] 1,21,31 fixing device 2 walls 3 mounting holes 5,25,35 retaining member 6,26,36 retaining block 7, 27, 37 Operation axis 8 sheet metal fittings 8a Female thread on tip 8b Female thread for separator 8c, 27b, 37b Tool mounting part 9 Tool body 10 Deformation part 10a slit 11 Regulation Department 12 ring groove 13 Projection 14 Operation part 15 Contact part 16 Tapered part 17 Holding part 25a, 36a Female thread part 27a head 28 insertion holes 29 recess

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-10-338972 (JP, A) JP-A-10-89325 (JP, A) JP-A-4-249608 (JP, A) JP-A-2000-130416 (JP, A) JP 2000-230520 (JP, A) JP 10-131302 (JP, A) Actual opening Sho 52-65756 (JP, U) Actual opening Sho 50-119857 (JP, U) Actual opening Sho 62-105204 (JP, U) Japanese Patent Sho 46-16206 (JP, B1) Jikkou Hei 5-8331 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E04B 1 / 41 503

Claims (11)

(57) [Claims] 1. A tubular retaining member which is inserted into a mounting hole formed in a wall surface and has a plurality of deformed portions at the insertion tip portion in the circumferential direction; and a tubular retaining member disposed on the tip side of the retaining member. A retaining block having an operation portion that deforms the deforming portion on at least a part of the peripheral surface; and moving the retaining block toward the retaining member side by rotation about an axis to deform the deforming portion toward the outer diameter side. An operation shaft for fixing the retaining member in the mounting hole; and an operating portion of the retaining block, which has a taper portion that gradually expands toward the tip; And a pressing portion that has a taper surface or a substantially parallel surface that is closer to parallel than that;
An abutting portion which is provided at a tip end position of the pressing portion and projects in a stepped shape toward the outer diameter side, and a tip end surface of the deformable portion abuts on the stepped portion. And the fixing device. 2. A tubular retaining member that is inserted into a mounting hole formed in a wall surface and has a plurality of circumferentially divided deformable portions at the insertion tip end; and a distal end of the retaining member. A retaining block having an operation portion that deforms the deforming portion on at least a part of the peripheral surface; and moving the retaining block toward the retaining member side by rotation about an axis to deform the deforming portion toward the outer diameter side. An operation shaft for fixing the retaining member in the mounting hole; and an operating portion of the retaining block, which has a taper portion that gradually expands toward the tip; And a pressing portion that has a taper surface or a substantially parallel surface that is closer to parallel than that;
And the retaining member includes a regulation portion formed in a stepped shape between the large inner diameter portion corresponding to the deformed portion and the small inner diameter portion of the other portion, and the regulation portion is A fixing device, characterized in that a stepped portion formed between a base end of the taper portion and the operation shaft is brought into contact with each other to regulate the amount of the retaining block entering the retaining member. 3. The deformable portion has an outer peripheral surface on the insertion tip side,
The fixing device according to claim 1 or 2, wherein the fixing device has a projecting portion that bites into the inner surface of the mounting hole. 4. The fixing device according to claim 3, wherein the protrusion has a shape elongated in the circumferential direction. 5. The fixing device according to claim 1, 2, 3 or 4, wherein the retaining block is integrally connected to the operating shaft. 6. The fixing device according to claim 1, 2, 3 or 4, wherein the retaining block is rotatably connected to the operation shaft. 7. The retaining block is screwed into a male thread portion at the tip of the operating shaft.
The fixing device according to 2, 3, or 4. 8. The operation shaft has a base end male screw part screwed to the sheet metal fitting at its base end part, 1, 2, 3, 4, 5, 6 or 7. The fixing device according to 7. 9. The operation shaft has a tool hooking part for mounting and operating a tool in an axial direction at a base end part of the operation shaft. , 6, 7 or 8 fixing device. 10. The operating shaft has an intermediate male screw portion screwed to the female screw portion of the retaining member at the intermediate portion thereof. , 7, 8 or 9 fixing device. 11. The operating shaft is characterized in that the base end portion thereof is located in the mounting hole.
The fixing device according to 5, 6, 7, 8, 9 or 10.