JP3515754B2 - Tightening fixture - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a fastening fixture suitable for fixing an electric circuit member to a grooved rail.

[0002]

2. Description of the Related Art In electric line construction, it is essential to fix an electric line member represented by a girder-like member for forming a raceway or a duct to a groove rail. Various proposals have heretofore been made as tightening fixtures for such purposes, for example, for fixing cable conduits, a vane plate nut is rotatably screwed into a bolt passing through a seat of the metal fitting body. Is proposed. As another type of tightening fixture, there has been proposed one in which a pair of left and right tightening blades that can tilt and expand and contract are pivotally supported by a central nut, and a bolt that passes through a seat of a metal fitting body is screwed through the nut. ing.

[0003]

The latter type is a type which is pushed in such a manner that it is positioned in a relationship orthogonal to the groove of the grooved rail, so that the blade is squeezed in contact with the inlet groove wall and passes through the inlet groove wall. This is a portable device that can be expanded again. Due to this relationship, there are problems that the number of parts is large and it takes time to assemble them, resulting in high product cost. In addition, since the tightening tool tilts the tightening blades by tilting them about the horizontal axis as a fulcrum, the tightening blades are block-shaped as a whole and have a large height. Therefore, it cannot be applied unless the groove-shaped rail is considerably deep, and there is a problem that it cannot be used in the case of a shallow groove.

On the other hand, the former turning type is
Compared to the latter, the structure is simple and cost effective.
However, the conventional tightening fixture is cumbersome to operate because the plate-shaped nut must be adjusted in a predetermined direction (the longitudinal direction is parallel to the rail groove) before use. In addition, the direction of the plate-shaped nut easily changes due to vibration or contact with other objects. Further, after inserting the plate-shaped nut into the groove of the rail, the bolt head must be operated to rotate the plate-shaped nut 90 degrees so as to be orthogonal to the groove-shaped rail. At this time, if the bolt is accidentally turned to the loosening side, the plate nut will be detached from the bolt and fall into the groove-shaped rail. For this reason, many work mistakes occur, and the work time for this kind of work in which a large number of screws are fastened is long and the efficiency is low.

Further, the conventional tightening fixture is essentially to regulate the rotation of the plate nut by abutting both longitudinal ends of the plate nut against the inner wall of the flange of the grooved rail. For this reason, the size of the plate-shaped nut becomes particularly large, and when the bolt is strongly tightened, the plate-shaped nut is liable to bend. To prevent this, it is necessary to increase the thickness of the plate-shaped nut. . As a result, there is a problem that the entire tightening fixture is large and heavy, and handling during transportation and work is troublesome.

Further, since both ends of the plate nut in the longitudinal direction are brought into contact with the inner wall of the flange of the grooved rail, it cannot be applied when the inner width dimension of the grooved rail is changed, and the inside of the grooved rail cannot be applied. It was uneconomical to prepare various types of plate nuts according to the width dimension, and it was not possible to use it for structures (hole type) that do not have walls on both inner sides other than grooved rails. was there.

Further, since the rotation of the plate-shaped nut is stopped by abutting the longitudinal ends of the plate-shaped nut on the inner wall of the flange of the grooved rail, the surface quality of the inner wall of the flange of the grooved rail is greatly affected. That is, if the inner wall of the flange of the groove-shaped rail is roughened or has irregularities, the plate-shaped nut will not be orthogonal to the longitudinal direction of the rail groove and will be caught at an angle, making it impossible to rotate the screw or the plate-shaped nut. The nut will rise diagonally when viewed from above. As a result, the grooved rail is tightened without securing a sufficient tightening area with the inlet groove wall, and unstable or uncertain tightening is likely to occur, resulting in poor reliability of fixing performance.

The present invention has been made in order to solve the problems of the prior art, and its object is to fix the fixing target member by an extremely simple operation regardless of the depth of the rail groove and the size of the flange inner width. An object of the present invention is to provide a tightening fixture that can perform temporary fixing and tightening and fixing, yet has a simple and small structure, has a small number of parts, and can achieve cost reduction.

Another object of the present invention is to provide a tightening fixture applicable not only to the groove-shaped rail but also to a member with a hole having no wall inside.

[0010]

In order to achieve the above object, the tightening fixture of the present invention is a metal fitting body for fixing a solid object to a grooved rail or a member with a hole, and a shaft portion is inserted into the metal fitting body. And a tightening fixture comprising a tightening nut consisting of a single vane plate-shaped member having a female screw hole to be screwed with the shank of the screw, wherein the metal fitting body is on the inlet wall of the grooved rail or A seat for seating on the hole entrance of the holed member, the seat having a bar-shaped hanging piece extending parallel to the shaft of the screw for restricting rotation of the tightening nut; The nut has a short piece and a long side that is relatively larger than this, and has a hole at the edge of the long side that penetrates the bar-shaped hanging piece, and the bar-shaped hanging piece penetrates through this hole to tighten the nut. The long side of is held parallel to the front and rear edges of the seat, Seat horizontal direction by directing to intersect the longitudinal bore inlet of the inlet channel or hole member with grooved rails, the clamping nut is inserted inside through inlet groove or hole inlet, the bracket body in this state It is characterized in that the long side of the tightening nut is oriented below the inlet wall forming the inlet groove or hole and orthogonally to the inlet wall by rotating 90 degrees.

The tightening nut preferably has a short side having a width dimension narrower than the inlet groove width dimension of the grooved rail and a length dimension longer than the inlet groove width dimension but shorter than the grooved rail inner width dimension. It has a long side. Therefore, the tightening nut is compact, and one type of tightening fixture can be used no matter how large the inner width dimension of the grooved rail is.

[0012] The tightening nut is basically a single blade-plate-shaped component, and in addition to a flat plate,
It includes the case of a groove-shaped cross-section having rising walls at the long side edges or the short side edges. When the rising wall is provided in this way, the strength increases due to the angle effect,
Even if the plate thickness of the tightening nut is thin, it can be firmly fixed.

[0013]

The "hole" includes not only the closed contour but also a groove partially communicating with the outside. In such a case, the hanging piece has a single bar shape that penetrates the hole. When the guide portion has the hole structure as described above, the detachment of the hanging piece is completely eliminated, so that both functions of the rotation stopper and the guide can be ensured.

In the present invention, preferably, an elastic member for urging the tightening nut in the direction opposite to the metal fitting body is interposed between the lower surface of the metal fitting body and the tightening nut. According to this structure, the tightening nut can be kept at a predetermined interval with respect to the metal fitting body without wobbling before the full-scale tightening and fixing. In addition, since the head of the screw does not float when tightened and fixed, the screw can be smoothly rotated.
Further, after the tightening, the pressing force of the elastic member acts on the tightening nut, so that the screw does not loosen due to vibration or the like.

Preferably, the shaft portion of the screw has a retaining portion at the lower end. The retaining portion not only separates from the tightening nut but also functions in cooperation with the elastic member to set the setting position (downward limit) of the tightening nut.

The metal fitting body of the present invention is not limited to the case where it is a single component integrally formed with a hanging piece. That is, the metal fitting body includes a normal first body having a seat portion that is seated on the inlet wall of the grooved rail, and a second body that is combined with the first body, and This includes the case where the second body has a portion (main portion) that comes into contact with the seat portion of the first body and a hanging piece that descends at a right angle from the tip of the main portion.

In the present invention, the "fixed object" is a concept including various members in electric circuit work, for example, girder materials such as parent girders and child girders, partition plates, outlet boxes, separators, and other shapes and structures. . Therefore, the metal fitting body of the present invention also includes various shapes and structures according to the fixed object. However, in any case, the metal fitting body is a main part (hold part) for fixing the fixing target to the grooved rail or the member with holes, that is, engaging with or catching the fixing target, It has parts that engage with each other and combine with each other.

[0019]

[Function] Since the direction of the tightening nut does not change relative to the metal fitting body due to the relationship between the bar-shaped hanging piece and the hole, hold the metal fitting body by hand to enter the groove-shaped rail entrance groove or hole of the holed member. Oriented so that the long side of the tightening nut is automatically parallel to the inlet groove and the tightening nut is inserted internally through the inlet of the groove or hole in the grooved rail.

When the metal fitting body is rotated 90 degrees in the clockwise or counterclockwise direction while holding the metal fitting body, the long side of the tightening nut is below the inlet wall forming the inlet groove or hole and is not connected to the inlet wall. Oriented orthogonally. Therefore, the temporary fixing state can be achieved by hooking the main part of the metal fitting body to the object to be fixed, engaging or contacting it. Then, when the screw is rotated, the tightening nut rises along the hanging piece while keeping the long side orthogonal to the inlet wall or hole,
The upper surface is in strong contact with the lower surface of the inlet wall, and is firmly clamped and fixed to the metal fitting body. Therefore, it is possible to easily and quickly fix the solid object to various grooved rails or members with holes without side walls.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 6 show a first embodiment of a tightening fixture according to the present invention. In this first embodiment, ducts (girder members) A arranged in a cross shape on the groove-shaped rail 2 are provided.
The example applied to the steady rest is shown.

Although only one groove-shaped rail 2 is shown in the drawing, a large number of groove-shaped rails 2 are arranged in parallel at a predetermined interval and are supported from the ceiling by hanging metal fittings. Channel rail 2
As shown in FIGS. 1 and 3A, the bottom wall 203, the side walls 202, 202 rising from both ends in the width direction, and the side walls 2
And a pair of inlet walls 201, 201 extending inwardly from the top of 02, 202 to form an inlet groove 200. The inlet walls 201, 201 are bent obliquely from the tops of the side walls in this example, but as will be described later, the side walls 202, 20
It may be bent so as to extend horizontally from the tops of the two, or may be bent horizontally from the tops of the side walls 202 and 202 and further bent at right angles from the bent ends.

The duct A as an object to be fixed is made of an extruded material, and the entrance wall 20 of the groove-shaped rail 2 is provided at the lower end of the back surface A1.
1, 201 has a bottom portion A3 which is placed in a cross shape, and a top portion which has a top portion A2 to be held by the metal fitting body 3. The bottom portion A3 and the top portion A2 are portions bent at right angles to the back surface A1.

In this example, the metal fitting body 3 is a steady rest fitting, and includes a screw 4, a tightening nut 1 and an elastic member 5. The metal fitting body 3 is formed with a rising portion 30 to be in contact with the back surface A1 of the duct A, a bent portion formed on the top portion of the rising portion 30, a hook portion 31 for the top portion A2 of the duct A, and a hook portion 31 from the lower end of the rising portion 30. The seat portion 32 is formed to be bent in the opposite direction. The seat portion 32 is a portion that is seated on the inlet walls 201, 201 of the groove-shaped rail 2.

As shown in FIG. 3A, the seat portion 32 has an upper surface plate portion 320 and a lower surface plate portion 321 that is inverted and bent from the tip of the upper surface plate portion 320 and overlapped with the upper surface plate portion 320. Through holes for inserting the shaft portion 42 of the screw 4 are provided in the upper surface plate portion 320 and the lower surface plate portion 321. The lower surface plate portion 321 is provided with a hanging piece 33 extending in parallel with the shaft portion 42 of the screw at a position forward of the base end of the seat portion 32 (the position where the rising portion 30 starts). The hanging piece 33 is in the form of a strip plate, and has a lower end (free end) that reaches a level equivalent to the tip of the shaft portion 42 of the screw 4 or a level slightly longer than that.
have.

The tightening nut 1 is usually made of ferrous or non-ferrous metal, and has a rectangular shape or a similar shape in plan view due to the short side and the long side relatively larger than this. There is. The width w (dimension of the short side) of the tightening nut 1 is equal to the width of the inlet groove 20 of the groove-shaped rail 2 shown in FIG.
The width (long side) l of the tightening nut 1 is longer than the width W1 of the inlet groove 200 of the groove-shaped rail 2, but the inner width W2 of the groove-shaped rail, that is, both side walls. The dimensions are shorter than the distance between the inner surfaces. The width w and the length l are the same in each example described later.

A female screw hole 10 into which a screw shaft portion 42 inserted through a through hole of a seat portion of the metal fitting body 3 is screwed is provided at a central portion of the tightening nut 1, and both sides of the female screw hole 10 are provided. A ridge 12 for slip prevention is formed.

A guide portion 11 is integrally formed in the central portion of the long side edge portion of the tightening nut 1. The guide portion 11 cooperates with the hanging piece 33 of the metal fitting body 3 so that the tightening nut 1 is always integrated with the metal fitting body 3 during rotation, and allows movement only in the vertical direction, that is, in the direction parallel to the screw shaft portion. Is a means to In this example, the guide portion 11 is formed as a T-shaped protrusion when viewed from the top, and is a relatively short protrusion 1 that extends in a direction perpendicular to the long side edge portion.
10 and an overhanging portion 111 extending from the tip end thereof to both sides
And have.

As shown in FIGS. 1 and 3 (a), (b) and (c), the hanging piece 33 of the metal fitting body 3 has a width slightly larger than the width of the projection 110 in the projection serving as the guide portion 11. Has a vertical groove 330 in the middle, and the thickness of the hanging piece 33 is appropriately smaller than the length dimension of the protrusion 110. The hanging piece 33 does not necessarily have to be separated into the right and left until reaching the base end.

The elastic member 5 is interposed between the seat portion 32 and the tightening nut 1 and biases the tightening nut 1 toward the opposite seat portion. The elastic member 5 may be a cylinder made of rubber or plastic, but normally a coil spring is used and is arranged around the shaft portion 42 of the screw 4.

A retaining portion 40 is provided at the tip of the shaft portion 42 of the screw 4 in order to prevent the tightening nut 1 from separating and to set the setting position (lower limit) of the tightening nut 1.
In this example, the retaining portion 40 has an enlarged diameter portion formed on the lower end of the shaft portion 42 of the screw 4 by caulking or local bulging. The retaining portion is provided after the tightening nut 1 is threaded through the shaft portion 42 of the screw 4.

The use and operation of the first embodiment will be described below.
In the normal state, the tightening nut 1 is positioned near the lower end of the shaft portion 42 of the screw 4 by the retaining portion 40 and the elastic member 5. Further, since the protrusion 110 of the guide portion 11 protruding from the long side edge portion is fitted into the vertical groove 330 of the hanging piece 33 that descends from the seat portion 32, the configuration shown in FIG.
As shown in (c), the long side 100 of the tightening nut 1 is the seat 3
It is held so that it is parallel to 2. Therefore, screw 4
The position of the tightening nut 1 does not change even if is accidentally rotated or when another object collides with the tightening nut 1.

In use, the metal fitting body 3 is grasped by hand, and as shown in FIG. 1 and FIG.
The width direction of 2 crosses the entrance groove 200 of the groove-shaped rail 2. In this way, the long side 100 of the tightening nut 1
Automatically becomes parallel to the inlet groove 200, so if the metal fitting body 3 is lowered as it is, the tightening nut 1 is inserted inside through the inlet groove 200 of the groove-shaped rail 2 as shown in FIG.

At the same time, as shown in FIG. 4 (b), while holding the metal fitting body 3 by hand, the metal fitting body 3 is moved in the clockwise or counterclockwise direction 9
When rotated by 0 degrees, the direction of the tightening nut 1 does not change relative to the metal fitting body 3 due to the fitting relationship between the vertical groove 330 of the hanging piece 33 and the guide portion 11, so that the tightening nut 1 does not move with the metal fitting body 3. Rotate together and tighten the long side 10 of the nut 1.
0 is oriented below the inlet walls 201, 201 forming the inlet groove 200 and orthogonally.

5 (a) to 5 (c) show a state in which the rotating operation of the metal fitting body 3 is completed. Since the tightening nut 1 is at the lower limit position and has a required space in the height direction between the inlet walls 201, 201, the metal fitting body 3 is used as a fixing object as shown by an arrow in FIG. The duct 31 can be easily engaged with the apex A2 of the duct A by bringing it closer to the duct A of the duct A and lifting it as shown by the phantom line in FIG. it can.

Then, the duct A on the grooved rail 2 is appropriately used.
After adjusting the position of, the head 41 of the screw 4 is rotated by a tool T such as a screwdriver. The guide portion 11 protruding from the long edge portion of the tightening nut 1 is provided with the vertical groove 33 of the hanging piece 33.
Since the tightening nut 1 cannot rotate, the long side 100 is elastic according to the rotation of the screw while keeping the orthogonal relationship with the inlet walls 201, 201 forming the inlet groove 200. It rises in parallel along the hanging piece 33 against the urging force of the member 5, makes strong contact with the lower surfaces of the inlet walls 201, 201, and is firmly tightened and fixed to the seat portion 32. Figure 6
(A) and FIG. 6 (b) show a state in which the tightening and fixing are completed, and since the pressing force of the elastic member 5 acts on the tightening nut 1 thereafter, the loosening of the screw does not occur even by vibration or the like.

In the present invention, it is simple since there is no need to operate the screw 4 until the time of final tightening. Moreover,
The tightening nut 1 is integrated with the metal fitting body 3 with respect to rotation, and the orientation of the metal fitting body 3 is changed as it is without rotating 90 degrees relative to the metal fitting body 3. Is. For this reason, mistakes in work do not occur at all.

Further, the tightening nut 1 is restricted from rotating independently by the relationship between the guide portion 11 and the hanging piece 33 as described above, and is movable only in the vertical direction. Therefore, the length 1 of the tightening nut 1 is equal to the side wall 20 of the groove-shaped rail 2.
The size that does not contact 2,202 at all is sufficient. Therefore, the inner width dimension of the grooved rail 2 is not selected, and the grooved rail 2 can be applied to any grooved rail 2 as long as the length 1 is larger than the inlet groove width W1. At the same time, the metal fitting body 3 can be turned clockwise or counterclockwise, so that the situation of the fixing place can be freely accommodated.

Since the tightening nut 1 has a low height,
By making the shaft portion 42 of the screw 4 and the hanging piece 33 a length dimension corresponding to the depth of the groove-shaped rail 2, it is possible to correspond to the groove-shaped rails of various depths H and H'as shown in FIG. 6 (b). can do.

7 to 18 show various modes of the tightening nut 1 suitable for application to the present invention. Figure 7
(A), (b) and (c) and FIGS. 8 (a) and (b) show a second example of the tightening nut 1 and a tightening fixture using the same. In this example, the tightening nut 1 is not a flat plate, but the edge of the long side 100 has a pair of rising walls 13, 13.
And has a groove-shaped cross section as a whole. By doing so, even if a material having a relatively thin plate thickness is used, the strength can be increased by the angle effect, and a strong tightening fixation can be realized. The guide portion 11 is formed on the upper end portion of one rising wall 13.

A short cylinder portion 17 is formed on the bottom plate portion of the tightening nut 1 by burring or the like. The female screw hole 10 is formed in this, and the end of the elastic member 5 is formed on the outer periphery of the short cylinder portion 17. A spring hooking protrusion 171 is formed for locking and preventing disengagement. In this example, the short tubular portion 17 is formed upward. In this way, spring-loaded protrusion 1
When 71 is provided, the elastic member 5 serves as a unit with the tightening nut 1, so that the assembly to the metal fitting body 3 becomes very easy. Since other configurations are the same as those of the first embodiment, the same reference numerals are given to the same portions, and the description of the first embodiment is cited for the description.

FIG. 8 (a) shows the step of holding the metal fitting body 3 by hand and inserting it into the groove-shaped rail 2, and FIG. 8 (b) shows the state where the fastening and fixing is completed. The usage and operation are also the same as those in the first embodiment except that the upper surfaces of the rising walls 13, 13 are in strong contact with the inlet walls 201, 201 during tightening, and therefore the description is incorporated.

9 (a) (b) (c) and FIG. 10 (a)
(B) shows a third example of the tightening nut 1 and a tightening fixture using the same. This example is the same as the second example described above except that the short tubular portion 17 having the female screw hole 10 is formed downward of the bottom plate portion. Second example and third
The example has an advantage that the torque for tightening and fixing can be made strong because the screwing length of the short tube portion 17 with the shaft portion 42 of the screw 4 increases. FIG. 10 (a) shows the step of holding the metal fitting body 2 and inserting it into the grooved rail 2.
0 (b) shows the state of completion of tightening and fixing.

FIGS. 11A, 11B, 11C and 11D show a fourth example of the tightening nut 1. In this example, the tightening nut 1 has a pair of rising walls 14, 14 at the edge on the short side.
In addition, a pair of reinforcing walls 15 are formed at the edge portion on the long side, facing downward as shown in FIG. 11 (a) or facing upward as shown in FIG. 11 (b). The strength can be further increased by the angle effect of the bent portions in the two directions. The guide portion 11 is formed on one reinforcing wall 15. 11 (a) and 11 (b), the short tubular portion 17 forming the female screw hole 10 is formed on the upper surface side.
You may form on the lower surface side like (c).

In the fourth example, as shown in FIG. 11D, the tops of the rising walls 14 and 14 on the short side are in strong contact with the inlet walls 201 and 201 forming the inlet groove 200. Therefore, it is suitable in the case of a grooved rail of the type in which the inlet walls 201, 201 are bent horizontally from the tops of the side walls 202, 202. The rest of the configuration and operation are the same as in the first embodiment, so the description will be incorporated.

12A and 12B show a fifth example of the tightening nut 1. In FIG. 12A, a protrusion 115 having a rectangular or planar-shaped hole 113 similar to this is formed as a guide portion 11 on the long side edge portion of the tightening nut 1. In FIG. 12B, the hole 11 is formed at the tip of the protrusion 115.
3, a groove 114 communicating with No. 3 is formed.

13A and 13B show a sixth example of the tightening nut 1. Although these are based on the same idea as the fifth example, in FIG. 13 (a), the width w of the tightening nut 1 is enlarged and a rectangular or similar plane-shaped hole 113 is provided inside the long side edge portion. There is. In FIG. 13B, a groove 114 communicating with the long side 100 is formed in the hole 113. 14
(A) and (b) show a tightening fixture using the tightening nut 1 of the fifth example, in which the seat portion 32 of the metal fitting body 1 has a flat bar-shaped cross section corresponding to the hole 113 of the guide portion 11. It has a hanging piece 33 having a shape, and this hanging piece 33 is a hole 1
It penetrates through 13. In this tightening fixture, the hanging piece 33 penetrates the hole 113 of the tightening nut 1 to exert both functions of a rotation stop and a parallel rising guide. Further, since the hanging piece 33 need only be a single piece having a relatively narrow width, the structure is simple. The rest of the configuration, usage and operation are the same as in the first embodiment, so the description will be incorporated.

15 (a), 15 (b), 15 (c), 15 (d) and 15 (e) show a seventh example of the tightening nut 1. These examples are
Protrusion 11 having a hole 113 at the long side edge of the tightening nut 1.
5 is formed as a guide portion 11, and a hanging piece 33 extending from the metal fitting body 3 is passed through the hole 113. Moreover, the tightening nut 1 is not a flat plate, but has a pair of rising walls 13, 13 at the long side edge portions as in the second example, and has a groove-shaped cross section. Further, the female screw hole 10 has a short tubular portion 17 formed by burring or the like. Since other configurations are the same as those of the second example and the fifth example, the corresponding parts are designated by the same reference numerals and the description thereof will be omitted.

To make the tightening nut 1 shown in FIGS. 15 (a) to 15 (d), the rising wall forming portion 1 of the tightening nut material 1'is shown in the unfolded state in FIG. 15 (e).
3'is provided with notches 130, 130 having a predetermined length and a protrusion forming portion 115 'is extended. Then, after bending the rising wall forming portion 13 ',
This is completed by bending the protrusion forming portion 115 'at a right angle to the rising wall forming portion 13'. The same method is used in the second to fourth examples described above.

16 and 17 (a) and (b) are the same as FIG.
The tightening fixture which applied the tightening nut 1 of (a) and (b) is shown. 16 and 17 (a) show a state in which the tightening nut 1 is inserted into the groove-shaped rail 2, and FIG.
7 (b) shows the state when the tightening is completed. The details of the method of use and the operation are incorporated in the description of the first embodiment.

18A, 18B and 18C show an eighth example of the tightening nut 1. In this mode, the tightening nut 1
It is the same as the fifth example that the protrusion 115 having the hole 113 is formed at the long side edge portion of the metal to form the guide portion 11 and the hanging piece 33 extending from the metal fitting body 3 penetrates the hole 113. However, the tightening nut 1 has a pair of rising walls 14 and 14 at its short side edges, and has a pair of downwardly or upwardly facing reinforcing walls 15 and 15 at its long side edges. The difference is that a protrusion 115 having a hole 113 is formed in the base. The female screw hole 10 has a short tube portion 17 formed by burring and the like.
In (a) and (b), it projects to the upper surface side, and in FIG. 18 (c), it projects to the lower surface side.

Illustrated are some aspects of the invention and are not limited thereto. First, the tightening nut 1 is generally preferably made by pressing, but may be made by casting or the like. Guide part 1
In addition to the case where the fastening nut 1 is integrally formed with the tightening nut 1, the fastening nut 1 may be formed as a separate member and joined by welding, adhesion or the like.

One guide portion 11 is usually sufficient, but 2
It may be more than one. For example, the hanging piece 33 of the metal fitting body 3
1 is a bifurcated shape as shown in FIG. 1 or the like, the guide portion 11 of the fourth to eighth examples has the projection 1 having the hole 113.
Two 15 may be provided.

The inlet groove wall 20 of the target groove-shaped rail 2
The cross-sectional shape of 1, 201 is not limited. The present invention can be applied to all types such as a sloped type, a horizontal L type, and a horizontal type.

The metal fitting body 3 is selected to have an arbitrary shape and structure corresponding to the solid object. 19 (a) and 19 (b) show an example thereof, which shows a metal fitting body 3 suitable for fixing a girder material (cable tray) made of, for example, I-shaped steel to the grooved rail 2 as an object to be fixed. . The metal fitting body 3 is provided with a locking portion 3b for a solid object at one end of a flat plate-shaped main portion 3a, and an angle portion 3 on the side opposite to the locking portion 3b.
The hanging piece 33 is formed via c. The hanging piece 33 of FIG. 19A corresponds to the guide portion 11 of the tightening nut 1 of the first to fourth examples. FIG. 19B shows the hanging piece 3.
3 has a shape corresponding to the guide portion 11 of the tightening nut 1 of the fifth to fifth examples. The main part 3a
The screw insertion hole 35 may be a round hole or a long hole.

FIG. 20 shows a state in which the metal fitting body 3 of FIGS. 19 (a) and 19 (b) is used. The guide piece 11 of the tightening nut 1 is inserted into the hanging piece 33 of the metal fitting body 3 to assemble the metal fitting body 3. In this state, as in the first embodiment, first, the metal fitting body 3 is arranged so that the long side of the tightening nut 1 is parallel to the inlet groove 200.
Gripping and inserting the tightening nut 1 together with the hanging piece 33 into the inlet groove, and then changing the direction of the metal fitting body 3 to bring the tightening nut 1 into a relationship orthogonal to the inlet groove 200, and the locking portion 3b to the girder material. Put it on the designated part of A'and screw 4 after positioning.
Just tighten.

Further, the present invention is not limited to the case where the metal fitting body is made of a single piece and the hanging piece is formed on the single metal fitting body. That is, it includes a case where the metal fitting body is made up of a combination of a first part body having no hanging piece and only having a seat portion and a second part body having a hanging piece. In this case, the second body functions as an attachment or a sub fitting body. An advantage of this mode is that the object of the present invention can be achieved by effectively utilizing the existing metal fitting body as the first body.

FIGS. 21 (a) and 21 (b) show a first mode of the combination form of the first body and the second body. Reference numeral 3'denotes a second body, and a hanging piece 33 is formed at one end of the plate-shaped main portion 3a via the angle portion 3c.
FIG. 22 shows a usage example of the first example, in which the main part 3a of the second part body 3'is overlapped with the seat part 32 'of the first part body 3 "which does not have the hanging piece. The shaft portion 42 of the screw 4 is inserted into the screw insertion holes 35, 35 provided in the seat 32 'and the seat 32', and the elastic member 5 is interposed between the seat 32 'and the tightening nut 1. The usage is the same as that described in the first embodiment, etc. The tightening nut 1 may have any of the structures of the first to eighth embodiments.

FIGS. 23 (a) and 23 (b) show a second mode of the combined form of the first body and the second body. The width of the second body 3'is narrower than the width of the seat 32 'of the first body 3 ",
It is preferably made smaller than the width of the inlet groove of the channel rail. The second body 3'is the same as the first example in that the hanging piece 33 is formed at one end of the plate-shaped main portion 3a via the angle portion 3c, but the base portion is provided at the other end side. It has a sandwiching piece 3d connected to the main portion 3a. The sandwiching piece 3d has a rising portion corresponding to the thickness of the seat portion 32 'of the first body 3 ",
It extends horizontally from the upper end of this rising portion, thereby sandwiching the seat portion 32 'from above and below by the sandwiching piece 3d and a part of the main portion,
The second body 3'is integrated with the first body 3 ". On the lower surface of the sandwiching piece 3d, the seat 3 of the first body 3" is formed.
A protrusion 36 that can be locked to 2'is provided.

FIGS. 24 (a) and 24 (b) show an example of use of the second mode, in which the seat portion 32 'of the first body 3 "is provided with an elongated screw insertion hole 35'. The main portion 3a of the second body 3'is abutted against the lower surface of the seat portion 32 ', and the sandwiching piece 3d is projected through the elongated screw insertion hole 35', and then the main portion 3 '.
Slide a. As a result, the seat 32 'is sandwiched from above and below by the sandwiching piece 3d and a part of the main portion, and the second body 3'is moved to the first position.
The body 3 "can be integrated. Therefore, the second
Although the body 3'is attached to the lower surface of the seat of the first body 3 ", it is easy to assemble, and the second body is assembled during the subsequent assembly work of the screw 4, the tightening nut 1 and the elastic member 5. Since it is not necessary to hold 3 ′ from the first body 3 ″ so as not to separate it, workability and work efficiency are improved.

The advantage of this second mode is that the hanging pieces 33 can be freely arranged at the base end side position and the free end side position of the seat portion of the metal fitting body. FIG. 25 shows an example thereof, in which the sandwiching piece 3d is protruded through the long hole-shaped screw insertion hole 35 'with the direction of the second body 3'reversed, and the hanging piece 3d is slid.
Can be provided on the front side. Therefore, it is possible to obtain an optimum set that immediately corresponds to the tightening strength of the tightening nut, the strength and shape of the metal fitting body, the groove rail shape, and the like. In addition, the sandwiching piece 3d may face in the opposite direction, that is, the main portion 3 in some cases.
It may be formed so as to rise from the vicinity of the front end of a and extend in the direction of the hole 35. In this case, the rising wall is the first
At the tip of the seat 32 'of the body 3 ", the seat 32' is vertically sandwiched between the sandwiching piece 3d and the tip of the main portion.

Further, when the hanging piece 33 is provided integrally with the metal fitting body 3, the hanging piece 33 is not necessarily limited to being provided at a position near the base of the seat portion 32. As shown in FIG. 26, the tip of the seat portion 32 of the metal fitting body 3 may be bent and formed.

The retaining portion of the present invention is formed not only on the shaft portion itself of the screw 4 as described above, but also by fitting an E ring 40 'as shown in FIG. 28 (a), or as shown in FIG. 28 (b). As described above, the thread groove of the screw shaft may be filled with the synthetic resin 40 ″.

Further, the tightening fixture of the present invention is not limited to the case of electrical line construction, but the metal fitting body for a desired object to be fixed to the plate-like or box-like member 2'illustrated in FIG. For example, it can be applied when fixing an angle member or a stay. In this case, the member 2'is the hole 2
00 'is required, but the hole 200' does not necessarily have to be rectangular and may have a shape having a major axis and a minor axis, such as an elliptical shape.
The relationship between the hole 200 ′ and the tightening nut 1 is such that the width w of the tightening nut 1 has a dimension smaller than the width (short side) W of the hole 200 ′, and the length 1 of the tightening nut 1 is equal to the hole 200. The length is shorter than the long side L of the ', and is appropriately longer than the width W of the hole 200'.

Hold the metal fitting body 3 and put the hanging piece 3 in the hole 200 '.
3 and the tightening nut 1 are inserted, and the direction of the metal fitting body 3 is changed to 90
When the tightening nut 1 is displaced once, the long side of the tightening nut 1 is automatically orthogonal to the short side of the hole 200 ′ from the state shown in FIG. When the screw 4 is rotated, the tightening nut 1 rises in parallel with the hanging piece 33 as a guide, and is strongly tightened and fixed to the inlet walls 201 'and 201' on the two sides of the hole 200 '. Therefore, even if there is no wall in the hole 200 ', the metal fitting body 3 can be firmly tightened and fixed to the lower surface of the hole of the member 2'.

Needless to say, the present invention can be applied to the case where the entrance groove 200 of the groove-shaped rail 2 or the hole 200 'of the member 2'is directed downward and the object to be fixed is fixed to this. Nor.

[0067]

According to the first aspect of the present invention described above, the tightening nut 1 is always constant in its relative orientation with respect to the metal fitting body, and moreover, the bar-shaped hanging piece 33 of the metal fitting body 3 and the tightening nut. With the hole 113 penetrating the bar-shaped hanging piece 33, the horizontal rotation stop and the guide action can be secured, and the groove rail 2 having a desired depth and a desired inner width can be obtained by a simple operation. It is excellent in that it can be easily and quickly fixed to the holed member 2'without working mistakes, and while having such characteristics, the structure is simple and small, the number of parts is small, and the cost is low. The effect is obtained.

According to claim 2, the tightening nut piece 1 is
Width w narrower than width W1 of the entrance groove 200 of the grooved rail 2
Since the length l is longer than the width W1 of the inlet groove 200 but shorter than the inner width W2 of the grooved rail, it is compact and the inner width of the grooved rail 2 is not restricted. It has the excellent effect that it can be accommodated by various kinds of tightening fixtures and can be applied to a member having no wall on both inner sides.

According to claim 3, the tightening nut piece 1 is
Standing wall 13, 13, 14, 14 on the long side or the short side
Since it has the above, it has an excellent effect that it is strong and can be firmly fixed.

[0070]

According to the fourth aspect, the effect described in the first aspect can be obtained by using an existing metal fitting body, not the one having a hanging piece as the metal fitting body, so that the range of application can be expanded. In addition to being able to do so, the excellent effect that the cost can be reduced can be obtained.

According to the fifth aspect, the elastic member 5 is interposed between the metal fitting body 3 and the tightening nut 1, and the elastic member 5 urges the tightening nut 1 in the direction opposite to the metal fitting body.
Prior to full-scale tightening and fixing, the tightening nut can be kept at a specified distance from the metal fitting body without wobbling.Because the head of the screw does not float when tightening and fixing, Dynamic operation can be performed smoothly. Further, after the tightening, the pressing force of the elastic member acts on the tightening nut, so that an excellent effect that the screw is not loosened due to vibration or the like is obtained. According to claim 6, since the screw 4 has the retaining portion 40 at the lower end,
The retaining portion 40 has an excellent effect that the tightening nut piece 1 can be prevented from being separated and the lower limit position can be easily set.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a tightening fixture of the present invention in a state at the start of use.

FIG. 2 is a perspective view of a tightening nut used in the first embodiment.

3A is a vertical cross-sectional side view showing a state at the start of use of the first embodiment, FIG. 3B is a partially enlarged view of FIG. 3A, and FIG.
FIG. 3 is a plan view showing the embodiment in a state at the start of use, and (d) is a partially enlarged view of (c).

FIG. 4 (a) is a vertical sectional side view showing a state in which the first embodiment has been inserted into the grooved rail, and FIG. 4 (b) shows the direction of the metal fitting body for temporary fixing after being inserted into the grooved rail. It is a top view showing the state where it is.

FIG. 5A is a vertical sectional side view showing a state at the time of starting temporary fixing of the first embodiment, and FIG. 5B is another vertical sectional side view of the same.
Similarly, (c) is a plan view thereof.

FIG. 6A is a vertical sectional side view showing the first embodiment in a tightened state, and FIG. 6B is a vertical sectional side view of the same.

7A is a plan view showing a second example of the tightening nut according to the present invention, FIG. 7B is a front view of the same, and FIG. 7C is a sectional view taken along line VII-VII of FIG. 7B.

FIG. 8A is a vertical cross-sectional side view showing a usage state of a tightening fixture to which the second example of the tightening nut is applied, and FIG. 8B is a vertical cross-sectional side view in the same tightening completed state.

9A is a plan view showing a third example of the tightening nut of the present invention, FIG. 9B is a front view of the same, and FIG. 9C is a sectional view taken along line VIII-VIII of FIG. 9B.

FIG. 10A is a vertical cross-sectional side view showing a usage state of a tightening fixture to which a third example of a tightening nut is applied, and FIG. 10B is a vertical cross-sectional side view of the same tightening completed state.

11A is a perspective view showing a fourth example of the tightening nut, FIG. 11B is a perspective view showing another aspect of the fourth example of the tightening nut, and FIG. 11C is a further view of the fourth example of the tightening nut. FIG. 7D is a partially cutaway front view showing another embodiment, and FIG. 9D is a vertical sectional side view showing a tightening fixture to which the fourth example of the tightening nut is applied, in a completed tightening state.

FIG. 12A is a plan view showing a fifth example of the tightening nut, and FIG. 12B is a plan view showing another aspect of the fifth example.

13A is a plan view showing a sixth example of the tightening nut, and FIG. 13B is a plan view showing another aspect of the sixth example.

FIG. 14A is a vertical sectional side view showing a usage state of the fifth example, and FIG. 14B is a vertical sectional side view showing the same fastening completed state.

15A is a plan view showing a seventh example of the tightening nut, FIG. 15B is a vertical sectional side view showing the seventh example in a used state, FIG.
FIG. 7C is a plan view showing another aspect of the seventh example, and FIG.
Sectional drawing which shows the use condition of the other aspect of an example, (e) is a top view which shows partially the raw material of the tightening nut of a 7th example.

16 (a) is a perspective view of the tightening fixture to which FIG. 15 (a) is applied.

FIG. 17 (a) is a vertical sectional side view showing a usage state of a tightening fixture to which the seventh example is applied, and FIG. 17 (b) is a vertical sectional side view showing the same tightening completed state.

18A is a perspective view showing an eighth example of a tightening nut, FIG. 18B is a perspective view showing another aspect of the eighth example, and FIG. 18C is a portion showing yet another aspect of the eighth example. It is a notch front view.

19 (a) is a perspective view showing another example of the metal fitting body of the present invention, and FIG. 19 (b) is a perspective view showing another example of the metal fitting body of the present invention.

FIG. 20 is a partial side view showing an example of use of the metal fitting body of FIG. 19 (b) in a completely tightened state.

FIG. 21 (a) is a perspective view showing an example of a second part body of the metal fitting body according to the present invention, and FIG. 21 (b) is a perspective view showing another example of the second part body of the metal fitting body according to the present invention.

FIG. 22 is a partial side view showing a usage example of the metal fitting body of FIG. 21 (b) in a completed tightening state.

23A is a perspective view showing another example of the second part body of the metal fitting body in the present invention, and FIG. 23B is a perspective view showing another example of the second part body of the metal fitting body.

FIG. 24 (a) is a cross-sectional view showing a first example of the usage state of FIG. 23 (a), and FIG. 24 (b) is a plan view showing the first example of the usage state of FIG. 23 (a).

25 is a cross-sectional view showing a second example of the usage state of the second body of FIG. 23 (a).

FIG. 26 is a side view showing another example of the metal fitting body in the present invention.

FIG. 27 is a perspective view showing an example in which the tightening fixture of the present invention is used for a member with holes.

FIG. 28 (a) is a side view showing another example of the screw retaining portion according to the present invention, and FIG. 28 (b) is a side view showing another example of the retaining portion.

[Explanation of symbols]

1 Tightening nut piece 2 groove rail 2'Hole member 3 body 4 screws 5 Elastic member 10 Female screw hole 11 Guide section 13,13,14,14 Rising wall 40 retaining part 110 Projection 111 Overhanging part 113 holes 114 groove 200 entrance groove 330 vertical groove

Claims (6)

(57) [Claims] 1. A metal fitting body (3) for fixing a solid object to a grooved rail (2) or a member (2 ') having a hole, and a screw (4) having a shaft portion inserted through the metal fitting body. A tightening fixture comprising a tightening nut (1) made of a single blade plate-shaped member having a female screw hole to be screwed with a shaft portion of a screw, wherein the metal fitting body (3) is on an inlet wall of a grooved rail. Alternatively, the bar-shaped hanging piece (33) has a seat portion that is seated on the hole entrance of the holed member, and the seat portion extends parallel to the shaft portion of the screw to restrict the rotation of the tightening nut (1). ), The tightening nut (1) has a short piece and a long side relatively larger than this, and has a hole (113) penetrating the bar-shaped hanging piece (33) at the long side edge portion. Then, the bar-shaped hanging piece (33) penetrates this hole (113) so that the long side of the tightening nut (1) is located at the front and rear edges of the seat portion. So that the metal fitting body (3) crosses the seat body left-right direction with the longitudinal direction of the inlet groove (200) of the grooved rail (2) or the hole inlet (200 ') of the holed member. The tightening nut (1) is inserted into the inside through the inlet groove or hole entrance, and the metal fitting body (3) is rotated by 90 degrees in this state, so that the long side of the tightening nut (1) enters the inlet groove or the hole. Inlet walls (201), (201), (201 '), (20) that make up the holes
1 ') A clamping fixture, characterized in that it is arranged below and perpendicular to the inlet wall. 2. A tightening nut (1) has a short side having a width w narrower than a width W1 of an inlet groove of the grooved rail and a length longer than the width W1 of the inlet groove but shorter than an inner width W2 of the grooved rail. The tightening fixture according to claim 1, having a long side of a length l. 3. The tightening fixture according to claim 1, wherein the tightening nut (1) has a pair of rising walls (13), (14) on a long side portion or a short side portion. 4. The metal fitting body (3) comprises a first part body having a seat part to be seated on the grooved rail, and a second part body (3 ') combined with the first part body, Second body (3 ')
The fastening fixture according to claim 1, wherein the fastening member has a main portion that contacts the seat portion, and a hanging piece that is bent and extends from the main portion. 5. An elastic member (5) is interposed between the metal fitting body (3) and the tightening nut (1), and the elastic member (5) biases the tightening nut (1) in the direction opposite to the metal fitting body. The tightening fixture according to Item 1. 6. The tightening fixture according to claim 1, wherein the shaft portion of the screw has a retaining portion (40) at its lower end for preventing the tightening nut from coming off.