JP3024774U - Fixture - Google Patents

Abstract

(57) [Abstract] (Correction) [Problem] To enable to firmly fix the bar arrangement without loosening even if any external force acts. SOLUTION: A locking portion 6 composed of an opening 6a and a locking window 6b is continuously provided to a screw hole 5 screwed in a substantially central portion of a metal plate-shaped member, and the locking portion 6 is formed in the screw hole 5. They are arranged symmetrically with respect to. This plate-like member is bent in a U-shape, and two rising portions 2 are provided at a right angle on one bottom surface portion. In order to fix the bar arrangement, the bar arrangements are introduced into both the rising parts 2 with the plane directions of both rising parts parallel to the bar arrangement, and the fixing device is rotated 90 degrees with respect to the bar arrangement to engage the locking part. Locking window 6
After being brought into contact with the inside of b, a fixing bolt is screwed into the screw hole 5 of the protruding portion and tightened, whereby the bar arrangement is strongly pressed and fixed in the major axis direction of the locking window.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixture for a reinforcing bar member used in construction or the like.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, for example, a device shown in FIG. 5 has been generally used as a device for fixing a reinforcing bar member as a long circular cross-section member used in construction and the like. Fix the bar arrangement member by introducing it into the opening with the same shape formed at the rising part, holding the bar arrangement member at the bottom, and screwing the bolt into the screw hole screwed on the bottom surface and tightening it. It is supposed to do.

[0003]

[Problems to be solved by the device]

 In the conventional fixing device for the reinforcing bar member as described above, after the fixing in this way, the reinforcing bar member may escape from the opening of the fixing device due to an impact when concrete is placed. . Even if there is an accident that deviates from the fixture, it cannot be easily confirmed after embedding it in concrete, and it can only be found when the concrete structure is dismantled. This is the current situation. The present invention was devised in order to solve the problems of the prior art as described above. The object is to provide a strong fixing device that does not loosen the lock.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides two rising portions having a locking portion for bending a metal plate member to lock a long bar arrangement member, and fixing the bar arrangement member. Fixing device having a bottom part provided with a screw hole into which a screw for inserting is formed, the locking part is at a right angle to the peripheral edge of the rising part and is larger than the diameter of the bar arrangement member. An opening having a width and a locking window having a width substantially the same as that of the opening are formed in an L shape in a direction perpendicular to the opening in a direction from the bottom surface portion toward the tip of the rising portion. An imaginary plane passing through substantially the centers of the two locking windows in the two rising portions is configured to pass through the center of the screw hole provided in the bottom portion.

Next, in the second fixing device of the present application, the two openings in the two rising portions are symmetrically opened with respect to an imaginary plane passing through substantially the centers of the two locking windows. It is a feature.

Next, the third fixing device of the present application is characterized in that the screw hole is provided in a protruding portion of the burring portion in the bottom surface portion.

Further, in the fourth fixing device of the present application, when a screw for fixing the bar arrangement member is screwed in the two locking windows, the direction in which the thread of the screw moves is such that the opening is open. It is characterized in that it is the same as the direction.

[0008]

[Action]

 According to the configuration of the present invention as described above, the rising portion of the fixing device is placed in parallel with the reinforcing member as a long-section circular member to be fixed so that it is close to both rising portions. When the bar member is rotated 90 degrees in a predetermined direction to be introduced into the opening, the bar arrangement member is introduced from the openings provided at the two rising portions and abuts and locks on the peripheral edge of the locking window. It In this state, the fixing bolts are screwed into the screw holes screwed on the bottom surface to move forward, and come into contact with the reinforcing bar members in a T-shape to strongly press them. Is fixed in the locking window. In this state, even if an external force is applied in the direction to rotate the bar arrangement member in the opposite direction to that when the bar element is introduced, the bar arrangement member should be pressed more strongly to the peripheral edge of one of the two rising portions of the locking window. Does not change the state of being firmly held. (Claims 1 and 2)

Further, the screw hole is subjected to burring processing on the bottom surface portion between the two rising portions, and is screwed to this burring processing portion to increase the number of effective threads of the screw portion. As a result, the tightening force of the fixing bolt is evenly distributed over the entire contact area including the increase in the number of effective threads, and as a result, even if the fixing bolt is strongly tightened to fix the reinforcing bar member, The screw part is not destroyed. (Claim 3)

Further, when a reinforcing bar member that is continuous in the vertical direction is fixed and a concrete is placed from above, the force (impact force) applied to the fixing device is the right and left on the central axis of the fixing bolt. The larger the surface area of the rising portion located at, the larger the surface area, so that the rising portion on the side with the larger surface area works counterclockwise around the central axis of the fixing bolt. At this time, the fixing bolt is fixed to the steel beam, etc., and the slightest rotation of the rising portion with respect to the fixing bolt in the immobile state is locked in the rising portion with some clearance. The reinforcing bar members are made to abut more strongly on the peripheral portions of both locking windows, more specifically, on the leading edge side of both locking windows at the rising portion in the major axis direction of both locking windows. . At the same time, the fixing bolts are screwed slightly in the direction in which they are pressed harder against the reinforcing bar material to be fixed, so that the reinforcing bar members are held more firmly to the fixing device. Become. (Claim 4)

[0011]

【Example】

 A preferred embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing an embodiment of the fixing device of the present invention, FIG. 2 is a development view showing a state where the fixing device of the present invention is developed in a plane, FIG. 3 is a perspective view showing a use state, and FIG. FIG. 5 is an explanatory view showing an operation when an external force acts when fixing the bar arrangement member, and FIG. 5 is a perspective view showing a conventional example. Reference numeral 1 denotes a fixing device according to the present invention, which is made of a suitable metal material such as mild steel, and is formed by bending a plate-like member having a predetermined thickness into a U-shape. As shown in FIGS. 1 and 2, the fixing device 1 has two rising portions 2 and one bottom surface portion 3 between the rising portions 2, and the center portion of the bottom surface portion 3 has a predetermined diameter. A screw hole 5 having a thread is provided.

As is apparent from FIG. 2 in which the fixing device of the present invention is developed in a plane, the two standing portions 2 face the peripheral portions substantially parallel to the left and right, and the bar arrangement members are locked. The engaging portions 6 for forming are formed so as to open in left and right opposite directions, respectively. This locking portion 6 has an opening width dimension having an opening 6a which is substantially perpendicular to the opening edge portion and having a dimension slightly larger than the diameter dimension of the reinforcing bar member 9 to be fixed, and the opening width dimension The locking windows 6b are continuously provided so as to have a short diameter dimension substantially the same as the above and have an elliptical shape having a long diameter direction toward the leading end side of the rising portion 2.

In the present embodiment, the locking window 6b is formed to have an elliptical shape, but an appropriate shape suitable for the cross-sectional shape of the reinforcing bar to be fixed, such as a rectangle or a rhombus. It can also be formed into a parallelogram such as. In other words, the shape of the locking window extending in the L shape on the tip side can be formed to be a straight line or a mountain shape.

Further, in the present embodiment, the shape of the opening portion has a constant width, forms a right angle from the peripheral edge portion of the opening, and has a linear introduction portion parallel to the reinforcing member to be fixed. Although formed, one or more appropriate convex portions may be provided in the middle of this opening to make it more difficult to pull out the reinforcing member to be fixed.

Further, an appropriate inclined portion may be provided in a part or the whole of the opening having the parallel and linear introduction portions. In short, it is easy to introduce the reinforcing member to be fixed and to prevent the reinforcement member from coming off easily. The shape of the introduction portion may be any as long as it is as follows.

One end of the locking window 6b in the major axis direction is in contact with one end of the opening 6a, and the other end extends beyond the opening width of the opening 6a and extends a predetermined distance toward the U-shaped tip end side. It is provided. Therefore, the short diameter of the locking window 6b is closer to the tip side of the rising portion 2 than the center line of the opening 6a.

Further, an imaginary plane connecting the major axes of the locking windows 6 b in the two rising portions 2 passes through the center of the screw hole 5 provided in the bottom surface portion 3. As a result, the center line of the screw screwed into the screw hole 5 is on a virtual plane connecting the major axis of the locking window 6b, and the center line of the bar arrangement member 9 to be locked in the locking window 6b and T. It will intersect like a letter.

The screw hole 5 threaded on the bottom surface part 3 is screwed on the burring part 4 formed by burring, following the step of forming the rising part 2 and the bottom part 3 by press working. As a result, the number of effective threads is increased compared to the case where screws are installed on the flat plate material.

In the present embodiment, the burring portion 4 is formed so as to project below the bottom surface portion 3 as shown in FIG. 4A, but it is projected above the bottom surface portion 3. It may be formed as described above. The point is that the protruding direction does not matter as long as the burring portion capable of increasing the number of effective threads is provided.

Next, the relationship between the fixing device 1 according to the present invention and the bar arrangement member 7 to be fixed will be described with reference to FIG. FIG. 4 (a) is a plan view of the fixing device 1 for locking and fixing the bar arrangement members 7 continuous in the vertical direction as seen from above, and FIG. 4 (b) is a vertical view as seen from the fixing bolt 8 side. The plan view and FIG. 4C are plan views seen from below. As shown in FIG. 4 (a), when the fixing bolt 8 for tightening and fixing the bar arrangement member 7 is a “right screw”, that is, the fixing bolt 8 is screwed into the fixing device 1 and screwed. At this time (in FIG. 4 (a), the screw is inserted in the direction from the bottom to the top). The directions of the two openings are set to be opposite to each other so that the direction in which the point P2 moves matches the P2 direction of the other opening 6a.

Next, a method of using the fixing device according to the present invention will be described with reference to FIG. After making the plane directions of both rising portions 2 of the fixing device 1 parallel to the direction of the reinforcing member 7 to be fixed, the reinforcing member 7 is introduced into both rising portions 2 and On the other hand, by rotating the fixing device 1 by 90 degrees in a predetermined direction, the bar arrangement member 7 is brought into contact with the peripheral edge of the locking window 6b of the locking portion 6 through the opening 6a and locked. In this state, the fixing bolts 8 for fastening are screwed into the screw holes 5 screwed in the bottom surface portion 3 and are screwed forward to tighten the bar arrangement member 7. At this time, as described above, the central axis of the fixing bolt 8 is orthogonal to the central axis of the fixed bar arrangement member 7 in a T-shape. As a result, the pressing force of the fixing bolt 8 is transmitted in the central axis direction of the bar arrangement member 7 and in the major axis direction of the locking window 6b, and the bar arrangement member 7 is inside the locking window 6b and is extremely open from the opening 6a. It is firmly fixed when it is difficult to remove.

The operation when an external force is applied to the fixing device to which the reinforcing member is fixed will be described with reference to FIG. Here, the plane of the rising portion 2 of the fixing device 1 is present in the horizontal direction so as to be orthogonal to the reinforcing member 7 having a predetermined length and continuous in the vertical direction (vertical direction). . The striking force F that acts when placing concrete from above against the fixture 1 arranged in this way is vertically applied to the plane of the rising portion 2, but in general, the striking force F is the surface area. It is loaded in proportion to the size of.

As shown in FIG. 4 (a), when a vertical plane is imaginary passing through the center of the fixing bolt 8, the two rising portions 2 on the center of the reinforcing member 7 are left and right by this imaginary plane. Is divided into parts. At this time, the surface area of the left half part is larger than the surface area of the right half part, so that the impact force applied to the left half part of the rising portion 2 acts more than the impact force applied to the right half part. Will be done. Due to the difference in the impact force, a moment M is generated with respect to the central axis of the fixing bolt 8, and the fixing device 1 is operated to rotate counterclockwise around the central axis of the fixing bolt 8. easy.

At this time, the other end side of the fixing bolt 8 screwed into the fixing device 1 is fixedly fixed to the steel frame beam of the building frame, and the moment M generated by the impact F on the fixing device 1 is generated. 4 acts to rotate the fixing device 1 in the direction of the moment M in FIG. 4 (b), and a slight rotation of the fixing device 1 causes a slight clearance within the locking window 6b. The bar arrangement member 7 that is locked by being pressed more strongly against the peripheral portion in the direction in which the locking window 6b extends, that is, in the major axis direction of the locking window 6b toward the peripheral portion on the leading end side of the rising portion. Contact.

That is, as shown in FIG. 4 (a), the fixing device 1 moves to the side of the lower building frame so as to be slightly advanced, so that the reinforcing bar member 7 is more strongly applied to the upper peripheral edge of the locking window 6 b. It will be in a fixed state. As described above, the difference in the impact force with respect to the different surface areas in the right and left portions of the upper rising portion 2 with the fixing bolt 8 as the center has no difference with respect to the fixing condition between the fixing device 1 and the reinforcing member 7. It does not cause any inconvenience, but rather acts as a stronger fixation.

Here, when the fixing bolt to be used is a “left screw”, that is, in FIG. 4B, the direction in which the points P1 and P2 move due to the screwing of the fixing bolt is opposite to the illustrated direction. At this time, when the striking force acts on the fixture 1 for fixing the bar arrangement member 7, the fixture 1 is loosened from the fixing bolt 8 fixed to the building frame, that is, in FIG. As a result of the fixing device 1 acting to move upward in (1), the reinforcing bar member 7 moves in a direction in which it is separated from the state in which it is strongly abutted and fixed to the upper peripheral edge of the locking window 6b. As a result, the locking of the bar arrangement member 7 becomes loose, and the risk of the bar arrangement member 7 deviating from the locking portion 6 increases depending on how the shock is applied thereafter.

[0027]

[Effect of device]

 As described above, according to the fixing device according to the first and second aspects of the present invention, when the fixing device is rotated with respect to the reinforcing member in the direction in which the reinforcing member is introduced into the locking window, The reinforcing bar members are respectively brought into contact with the peripheral portions of the locking windows provided on the two rising portions, and in this state, the fixing bolt is screwed into the screw hole screwed in the center of the bottom surface to advance. Tighten and fix more. At this time, the central axis of the fixing bolt should be orthogonal to the central axis of the reinforcing bar, and the virtual plane including the central axis of the fixing bolt and the central axis of the reinforcing bar should coincide with the major axis direction of the locking window. As a result, the tightening force of the fixing bolt can firmly fix the central axis of the bar arrangement member by pressing it strongly in the major axis direction of the locking window.

According to the fixing device of the third aspect, in addition to the effect of the first aspect, the number of effective screws of the screw portion is increased, so that the fixing bolt for fixing the reinforcing bar member is fixed. Even if the bolt is strongly tightened, the screw part is not destroyed by this, and the fixing work can be continued without paying particular attention to the tightening torque of the fixing bolt. It can greatly contribute to the reduction of defects such as part destruction and the improvement of fixing quality.

According to the fixing device of the fourth aspect, in addition to the effect of the first aspect, the impact force applied to the fixing device to which the bar arrangement members continuous in the vertical direction are fixed is on the central axis of the fixing bolt. It acts more toward the larger surface area of the rising parts located on the left and right of the, and works to rotate it counterclockwise around the center axis of the fixing bolt, and it has some clearance and locks. The reinforced bar members are abutted more strongly on the peripheral portions of both locking windows. At the same time, the fixing bolt allows the fixing device to slightly advance in the direction in which it is pressed more strongly with respect to the reinforcing member to be fixed, so that the reinforcing member can be held more strongly with respect to the fixing device. As a result, no matter what kind of impact force is applied to the fixing device after fixing the reinforcing member, the reinforcing member does not deviate from the fixing device and the firmly held state changes. There is no remarkable effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a fixing device according to an embodiment of the present invention.

FIG. 2 is a development view showing a state of being developed in a plane shape.

FIG. 3 is a perspective view showing a usage state.

FIG. 4 is an explanatory diagram showing an operation when an external force is applied when the reinforcing bar member is fixed.

FIG. 5 is a perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fixing device 2 Standing part 3 Bottom part 4 Burring processed part 5 Screw hole 6 Locking part 6a Opening 6b Locking window 7 Reinforcement member 8 Fixing bolt

Claims (4)

[Scope of utility model registration request] 1. A metal plate member is bent to have two rising portions having locking portions for locking a long bar arrangement member, and a screw for fixing the bar arrangement member is screwed therein. In the fixture having a bottom surface portion provided with a possible screw hole, the locking portion has an opening that is perpendicular to the peripheral edge of the rising portion and has a width larger than the diameter of the reinforcing bar member, and the opening. A locking window having a width substantially the same as that of the opening is formed in an L-shape in a direction perpendicular to the opening in a direction from the bottom surface portion toward the tip of the rising portion, and An imaginary plane that passes through substantially the center of one of the locking windows passes through the center of a screw hole provided in the bottom surface portion. 2. The two of the two rising portions
The fixture according to claim 1, wherein the two openings are symmetrically opened with respect to an imaginary plane passing through substantially the centers of the two locking windows. 3. The fixing device according to claim 1, wherein the screw hole is provided in a protruding portion of a burring portion on the bottom surface portion. 4. When the screw for fixing the reinforcing bar member is screwed into the two locking windows, the moving direction of the thread of the screw is the same as the opening direction of the opening. The fixing device according to claim 1, which is characterized in that.