JPH0616554U - Knee muscle fixing device - Google Patents

Abstract

(57) [Summary] [Structure] An inverted U-shaped portion 11 and both leg portions 11a of the inverted U-shaped portion 11, which are made of a wire material having springiness.
11a from the lower end to the torsion coil spring portions 12, 1 respectively
A pair of arm portions 1 extended to the same lateral side via 2
3 and 13, and the arm portions 13 and 13 are configured to be swingable downward against the elasticity of the torsion coil spring portions 12 and 12. [Effect] Even if the height of the upper flange of the beam-shaped steel from the upper surface of the knitting muscle is significantly different, it is possible to deal with it with one fixing tool, and therefore the type of fixing tool is much different. The number is small, which is extremely advantageous in the management and handling of the fixing tool.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a fixture for fixing a knitting muscle to a beam-shaped steel.

[0002]

[Prior art]

 When building a beam made of steel reinforced concrete, main bars are placed at four locations outside the four corners in the cross-sectional shape of the I-type or H-type beam-type steel, and the four main bars are arranged parallel to the length direction of the beam-type steel. The accessory muscles (hoop muscles) are wound so as to surround them. In that case, the upper two main muscles must be supported at both ends of the muscles placed on the beam-shaped steel. It is necessary to fix it to the beam steel.

[0003] Therefore, as a conventional device for fixing the knee muscles of this type, there is one described in Japanese Utility Model Publication No. 54-42514. This device for fixing the muscles of the knees is such that the top of the device is fitted over the muscles of the beam placed on the upper flange of the beam-shaped steel, and the hooks protruding from one lower end on one side to the one side on the lower surface of the flange. And the elastically deformable knitting muscle pressing portion formed on the top portion is pressed against the knitting muscle, so that the knitting muscle is fixed on the upper flange of the beam-shaped steel.

[0004]

[Problems to be solved by the device]

 In the conventional fixing tool as described above, since the knitting muscle is pressed and fixed by the reaction force due to the elastic deformation of the knitting muscle pressing portion, even if the thickness of the upper flange or the diameter of the knitting muscle is different, the error is One fixing tool can be used within the elastic deformation range of the pressing part, but the range in which the pressing part can bend is extremely small due to the structure of the fixing tool, and the thickness of the upper flange and the touching pin are at best. It was only possible to deal with the range of the diameter of the muscle that varies depending on manufacturing errors.

In view of this, the present invention can be applied, for example, to a case in which the knot muscle is directly placed on the flange and a case where the knot muscle is placed on the flange via a spacer having a thickness about the diameter of the knot muscle. Thus, even if the height from the upper surface of the flange to the upper surface of the muscle of the knee is significantly different depending on the use mode, it is an object of the present invention to provide a tool of fixing the muscle of muscle that can be accommodated by one fixture.

[0006]

[Means for Solving the Problems]

 The device for fixing the knee muscle of the present invention, which is made to achieve the above object, is composed of a wire material having a spring property, and has a twisted coil spring from the inverted U-shaped portion and the lower ends of both legs of the inverted U-shaped portion. A pair of arm portions extending in the same lateral direction through the portions, and the arm portions are configured to be able to swing downward against the elasticity of the torsion coil spring portion. To do.

[0007]

【Example】

 An embodiment will be described with reference to the drawings. FIG. 1 shows a use state of a fixing tool of the present invention. In FIG. The main bar 6 is a secondary bar wound around the main bars 2 to 5, 7 is a knitting bar made of a round steel material, and 8 is a knitting bar fixing device according to the present invention. The knitting bar 7 is placed on the upper flange 9 of the beam-shaped steel 1 via a pair of left and right spacers 10, and the upper two main bars 2 at both ends of the knitting bar 7 projecting in the flange width direction. , 3 are supported. As shown in the figure, the knot muscle fixing device 8 according to the present invention is used as a pair for each knot muscle 7. The spacer 10 has an appropriate length in the lengthwise direction of the beam steel, and its thickness is about the same as the diameter of the knitting bar 7.

Each of the knitting muscle fixing tools 8 is formed of a metal wire material having a spring property, and as shown in FIGS. 2 and 3, the inverted U-shaped portion 11 and the inverted U-shaped portion 11 are formed. A pair of arm portions 13 and 13 extending from the lower ends of both leg portions 11a and 11a to the same lateral side through the torsion coil spring portions 12 and 12, respectively, and each arm portion 13 of the torsion coil spring portion 12 are provided. It is constructed so that it can swing downward against elasticity. As is apparent from FIG. 2, the inverted U-shaped portion 11 has its upper portion bent to the extending side of the arm portion 13 to form a bent portion 11b. Further, the tip portion 13a of each arm portion 13 is formed in a downward curved shape.

When using the knitting muscle fixing tool 8 having the above-described structure, as shown in FIG. 4, the kneading muscles 7 placed on the upper flange 9 of the beam-shaped steel 1 via the spacer 10 are connected. The inverted U-shaped portion 11 is fitted over each end portion, and both arm portions 13 and 13 are moved downward against the elasticity of the torsion coil spring portions 12 and 12 while holding the inverted U-shaped portion 11. By swinging the arm portions 13 and 13 toward the top of the inverted U-shaped portion 11 so that the arm portions 13 and 13 are moved to the opposite legs of the inverted U-shaped portion 11. The parts 11a, 11a are pushed into the lower side of the flange 9 until they come into contact with the side edges of the upper flange 9.

As a result, due to the torsional elastic reaction force of the torsion coil spring portions 12, 12, the tip end portions 13a, 13a of both arm portions 13, 13 are pressed upward against the lower side surface of the flange 9, and the inverted U Since the apex of the character-shaped portion 11 is pressed against the upper surface of the knitting muscle 7, the knitting muscle 7 is fixed on the flange 9. Therefore, the both arm portions 13 and 13 utilize the torsional elastic deformation of the torsion coil spring portions 12 and 12 as shown in FIG. Since it can be swung downward in a very large angle range up to a lying posture that is directed almost horizontally, the upper pressing action point that presses against the upper surface of the knitting muscle 7 and the lower side that presses against the lower side surface of the beam-shaped steel flange 9 The range of clamping and fixing operation with the side pressure contact is very large.

Therefore, the above description with the solid line diagram of FIG. 4 is for the case where the maximum diameter knitting bar 7 is placed on the flange 9 via the spacer 10 and the clamping and fixing action range is maximum. As an example, as shown by the phantom line in the figure, when the knitting muscle 17 having the smallest diameter is placed directly on the flange 9 and the knitting muscle 17 is fixed, the above-mentioned clamping and fixing action range is described. Even when the number is minimum, it is possible to use the same knee pin fixing tool 8 as that used in the case shown by the solid line. That is, as shown in the phantom diagram of FIG. 4, the inverted U-shaped portion 11 of the knee muscle fixing device 8 is fitted over the end of the knee muscle 17 directly mounted on the upper flange 9. , The arm portions 13, 13 are swung downward against the elasticity of the torsion coil spring portions 12, 12 to widen the gap between the tops of the inverted U-shaped portions 11 into relatively narrow eyes. In this state, both arm portions 13 and 13 may be pushed into the lower side of the flange 9 until the both leg portions 11a and 11a come into contact with the end surface of the flange 9.

The knot muscle fixing device 8 has a bent portion 11b formed by bending the upper portion of the inverted U-shaped portion 11 toward the side where the arm portion 13 extends, as described below. This is due to the reason.

That is, as in the case of the muscle fixation device 18 shown in FIG. 6, when the inverted U-shaped portion 11 is formed straight from the lower portion to the upper portion, the U-shaped portion 11 has a top portion. The horizontal separation distance between the contact position with the knitting muscles 7 and 17 and the contact position between the tip of the arm 13 and the lower surface of the flange 9 becomes large, and moreover, the top of the U-shaped portion 11 and the contact point. The contact position with the streaks 7 and 17 projects laterally outward from the side edge of the beam-shaped steel flange 9 in the use state. In such a situation, when only one end of the knitting muscle is fixed to the side edge of the beam-shaped steel flange 9 by the knotting muscle fixing device 8, the knitting muscle fixing device 8 moves to the knotting muscles 7 and 17. Due to the downward pressing force that acts, the falling moment acting on the knitting muscle 7 becomes large, and the other end side of the knitting muscle 7 to which the fixing tool 8 is not yet attached jumps upward, which is inconvenient for work. . In particular, as shown in the figure, in the case of supporting the stiletto muscle via the spacer 10, the possibility of the stilt muscle falling down becomes very large.

However, as described above, by bending the upper portion of the inverted U-shaped portion 11 toward the extension side of the arm portion 13 to form the folded portion 11b, the U-shaped portion 11 and the top portion of the U-shaped portion 11 can be formed. If the contact position with the knitting muscle is brought closer to the contact position between the tip of the arm portion 13 and the lower surface of the flange 9 in the horizontal direction, the above-described tipping moment will not work at all or will be very small. Therefore, it is possible to improve workability. Of course, even when the spacer 10 is used in combination, if the spacer 10 is arranged just below the contact point between the apex of the U-shaped portion 11 and the knitting muscle, no overturning moment is generated in the knitting muscle.

[0015]

[Operation and effect of the device]

 As described above, the knitting muscle fixing device of the present invention is made of a wire material having a spring property, and is made to extend in the same lateral direction from the inverted U-shaped portion and the lower ends of both legs of the inverted U-shaped portion through the torsion coil spring portions. And a pair of arms, and the arm is configured to be able to swing downward against the elasticity of the torsion coil spring portion.In using it, the hairpin placed on the upper flange of the beam-shaped steel. While straddling the inverted U-shaped portion on the muscle, swing both arms downwards against the elasticity of the torsion coil springs, so that the tips of both arms and the top of the inverted U-shaped portion. By widening the interval facing each other and pushing both arms to the lower side of the inverted U-shaped portion until the two legs contact the side edge of the beam-shaped steel flange, Place the muscles on the upper hula It can be fixed on di.

[0016] Accordingly, according to the device for fixing the stapes muscle of the present invention, the clamping and fixing action between the upper pressing action contact which presses against the upper face of the connecting muscle and the lower pressing action contact which presses against the lower surface of the beam-type steel flange. The range is a very large range from the minimum value when both arms are in the initial standing posture to the maximum value when both arms are swung downward against the elasticity of the torsion coil spring part. Therefore, for example, when placing the smallest diameter knot muscle directly on the flange, and when placing the largest diameter knot muscle on the flange via a spacer of appropriate thickness. However, even if the height from the upper surface of the flange to the upper surface of the knitting muscle is significantly different, it is possible to handle it with one fixing tool. Therefore, the number of types of fixing tools is much smaller than that of conventional ones, which is extremely advantageous in management and handling of the fixing tools.

Further, as described in claim 2, when the upper portion of the inverted U-shaped portion is bent toward the extending side of the arm portion, the top of the U-shaped portion and the knitting muscle The position of the upper pressing contact that pushes down the knitting muscle downwardly when in use is brought closer to the contact position between the tip of the arm and the lower surface of the flange in the horizontal direction. It can be located inside the edge. Therefore, when only one end side is fixed to the beam steel with the fixing tool of the present invention, it is possible to completely prevent the knot muscle from falling, or make it difficult to fall, and the work of attaching the knot muscle is easy and safe. You can do it all.

[Brief description of drawings]

FIG. 1 is an overall front view showing a usage state of a device for fixing the muscles of the knuckle according to an embodiment of the present invention.

FIG. 2 is a side view of the device for fixing the muscles of the knuckle;

FIG. 3 is a rear view of the device for fixing the knuckle muscle.

FIG. 4 is an enlarged detailed explanatory view showing a method of using the device for fixing the knuckle muscle.

FIG. 5 is an end view of FIG.

FIG. 6 is a side view showing a modified embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam type steel 2 Main bar 3 Main bar 4 Main bar 5 Main bar 6 Secondary bar 7 Knuckle bar 8 Fixing tool for the Knuckle bar 9 of the present invention 9 Upper flange of beam beam 10 Spacer 11 Inverted U-shaped part 11a Leg 11b Bending part 12 Torsional coil spring Part 13 Arm 17 Knee muscle 18 Knee muscle fixing device of the present invention

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. An inverted U-shaped portion made of a wire material having a spring property, and a pair of legs extending from the lower ends of both legs of the inverted U-shaped portion to the same lateral side through torsion coil spring portions. And an arm portion, wherein the arm portion is configured to be swingable downward against the elasticity of the torsion coil spring portion. 2. The device for fixing the knee muscles according to claim 1, wherein the upper portion of the inverted U-shaped portion is bent toward the extending side of the arm portion.