JP5113130B2 - Concrete top edge indicator - Google Patents

Description

  The present invention relates to a concrete top end indicator for displaying the top end position of concrete to be placed in laying work of reinforced floor concrete.

  As this type of conventional top end indicator, there is known a structure in which attachment means for attaching and fixing the top end indicator to the reinforcing bar is different for the vertical and horizontal bars (for example, (See Patent Document 1).

Japanese Patent Laid-Open No. 2006-152611

However, in the conventional top end indicator, the mounting means for attaching and fixing the top end indicator to the reinforcing bar has a different structure for the vertical and horizontal bars, so the number of parts increases. Not only is the production cost high, but it is also necessary to prepare two types of reinforced floor concrete, and to select and use one of the two types of top and bottom bars for each of the vertical and horizontal bars. There was a problem of being bad.
The problem to be solved by the present invention is to reduce the cost by reducing the number of parts of the concrete top end indicator by enabling the use of both vertical and horizontal bars, and the work efficiency in laying the reinforced floor concrete The object of the present invention is to provide a concrete top end indicator that can enhance the height of the concrete.

  In order to solve the above-described problem, the concrete top end indicator according to claim 1 is provided with an attaching means that can be attached and fixed to a reinforcing bar, a pole that is attached and fixed to the reinforcing bar by the attaching means, and is movable up and down with respect to the pole. A top end display member having a top end display portion to be mounted; and a fixing means capable of fixing the top end display member at an arbitrary movement position of the pole; and the attachment means includes a clip body and a fastening member. The clip body is formed in a substantially U-shape provided with a pair of substantially parallel two-surface portions facing each other by bending a strip-shaped steel plate and a substantially semicircular back surface portion connecting these, A bolt insertion hole is formed in the substantially parallel two-surface portion, and the other substantially parallel two-surface portion is formed in a cross-like shape constituted by a long hole long in the longitudinal direction of the clip body and a long hole orthogonal to the long hole. A hole is drilled and the fastening member is terminated Both elongated holes are composed of a fastening bolt having a wide wedge-shaped head and a fastening nut screwed to the fastening bolt, and the wedge-shaped head forms a cross-shaped hole drilled in the substantially parallel two-surface portion. The wedge-shaped head has a narrow width at the tip thereof that can be inserted and locked, and the fastening bolt is configured to be able to be inserted into a bolt insertion hole formed in the substantially parallel two-surface portion. A female screw hole for detachably attaching the pole to the wide part at the end of the part, and a male screw capable of being screwed into the female screw hole is provided at the lower end of the pole; did.

  The concrete top end indicator according to claim 2 is the concrete top end indicator according to claim 1, wherein two or more bolt insertion holes are formed along a longitudinal direction of the clip body. It was set as means.

  The concrete top end indicator according to claim 3 is the concrete top end indicator according to claim 1 or 2, wherein the male screw and the pole are connected via a flexible connecting member. It was set as means.

  The concrete top end indicator according to claim 4 is the concrete top end indicator according to claim 3, wherein the flexible connecting member is formed of a rubber pipe, and an upper end portion of the male screw is inserted into the axial hole from both ends. And the lower end of the pole is press-fitted so that the male screw and the pole are connected so as to be bendable.

  The concrete top end indicator according to claim 5 is the concrete top end indicator according to claim 4, wherein a groove along the longitudinal direction of the pole is formed on a side surface of the pole press-fitted into the rubber pipe. It was set as the characteristic feature.

  The concrete top end indicator according to claim 6 is the concrete top end indicator according to claim 3 or 4, wherein a groove along the longitudinal direction of the pole is formed on a side surface of the pole press-fitted into the rubber pipe. It was set as the means characterized by. A groove along the longitudinal direction of the pole is formed on the side surface of the pole press-fitted into the rubber pipe.

In the concrete top end display tool according to claim 1, as described above, the attachment means includes a clip body and a fastening member, and the clip body includes a pair of substantially parallel two-face portions facing each other by bending a belt-shaped steel plate. It is formed in a substantially U shape provided with a substantially semicircular back surface portion for connecting them, a bolt insertion hole is drilled in one approximately parallel two surface portion, and a clip body is formed in the other approximately parallel two surface portion 12. A cross-shaped hole is formed by a long hole that is long in the longitudinal direction and a long hole that is orthogonal to the long hole, and the fastening member is screwed to the fastening bolt having a wedge-shaped head with a wide end and a screw. The wedge-shaped head is inserted and locked with either of the narrow holes at the tip of the wedge-shaped head in either of the long holes that form a cross-shaped hole drilled in approximately two parallel surfaces. Bolt insertion hole that is configured to be possible and the fastening bolt is drilled in approximately parallel two-surface parts A structure that can be inserted, a female screw hole for removably attaching the pole is formed in the wide part at the end of the wedge-shaped head, and a male screw that can be screwed into the female screw hole is provided at the lower end of the pole It was.
For this reason, when attaching the pole to the vertical bar, attach the clip body from the horizontal direction to the vertical bar, insert the fastening bolt of the fastening member through the cross-shaped hole of the parallel two-sided part, and insert the bolt on the parallel two-sided part When penetrating the hole, it is inserted so that the narrow portion of the wedge-shaped head is inserted and locked into the long hole extending in the longitudinal direction of the clip body. Then, by fastening and fastening the fastening nut to the fastening bolt that has penetrated the bolt insertion hole, the pole can be vertically fixed to the vertical bar via the attaching means.
In addition, when attaching the pole to the horizontal stripe, attach the clip body to the horizontal stripe from either the top or bottom, insert the fastening bolt of the fastening member through the cross-shaped hole on the parallel two-sided part, and insert the bolt on the parallel two-sided part Penetrate the hole. In that case, it inserts so that the narrow part of a wedge-shaped head may be inserted and locked in the long hole orthogonal to the long long hole toward the longitudinal direction of the clip body. Then, by fastening and fastening the fastening nut to the fastening bolt penetrating the bolt insertion hole, the pole can be attached and fixed to the transverse bar vertically via the attaching means.
As described above, it is possible to attach and fix to both the vertical and horizontal bars simply by manufacturing and preparing one type of top panel display, thus reducing the cost by reducing the number of parts of the concrete top edge display. In addition, it is possible to increase the work efficiency in the laying work of the reinforced floor concrete.

  The concrete top end indicator according to claim 2, wherein, as described above, one or more types of top plate indicators are provided by forming two or more bolt insertion holes along the longitudinal direction of the clip body. The mounting means can be attached to a plurality of reinforcing bars with different diameters just by manufacturing and preparing the material, thereby reducing the cost by reducing the number of parts of the concrete top end indicator and laying the reinforced floor concrete. Work efficiency can be improved.

  In the concrete top end indicator according to claim 3, as described above, the male screw and the pole are connected via the flexible connecting member, so that the concrete supply pipe moves while moving. However, the flexible connecting member is not hindered by the bending of the flexible connecting member, and the safety of the worker can be ensured. The top end display function can be maintained.

  In the concrete top end indicator according to claim 4, as described above, the flexible connecting member is formed of a rubber pipe, and the upper end portion of the male screw and the lower end portion of the pole are respectively press-fitted into the axial hole from both ends. With the configuration in which the male screw and the pole are connected so as to be bendable, the male screw and the pole can be easily connected only by press-fitting work.

In the concrete top end indicator according to claim 5, as described above, the male screw for the rubber pipe is provided with a structure in which the round bar-like connecting portion that can be press-fitted into the rubber pipe via the flange is integrally provided at the upper end of the male screw. The press-fitting work can be easily performed.
In addition, since the flange is provided, the male screw can be aligned only by inserting the round bar-like connecting portion until the flange comes into contact with the lower end surface of the rubber pipe.

  In the concrete top end display tool according to claim 6, as described above, a groove along the longitudinal direction of the pole is formed on the side surface of the pole press-fitted into the rubber pipe. Since it acts as an air vent when press-fitting into the shaft hole of the pole, the press-fitting work of the pole can be performed easily.

It is a perspective view of the attachment state with respect to the vertical streak which shows the concrete top end indicator of Example 1. FIG. It is a top view which shows the clip main body in the concrete top end indicator of Example 1. FIG. It is an expanded view which shows the clip main body in the concrete top end indicator of Example 1. FIG. It is a perspective view which shows the fixing means in the concrete top edge display tool of Example 1. FIG. It is a longitudinal cross-sectional view which shows the pole part in the concrete top end indicator of Example 1. FIG. It is a perspective view of the attachment state with respect to a horizontal streak which shows the concrete top end indicator of an Example. It is an expanded view which shows the clip main body in the concrete top edge display tool of Example 2. It is a perspective view which shows the attachment state with respect to the vertical streak in the concrete top end indicator of Example 2. FIG. It is an expanded view which shows the other example of a clip main body.

  Embodiments of the present invention will be described below with reference to the drawings.

The concrete top end indicator of Example 1 corresponds to the inventions described in claims 1 and 3 to 6.
First, the concrete top end display of Example 1 will be described with reference to the drawings.

FIG. 1 is a perspective view of the concrete top end display device according to the first embodiment attached to the longitudinal bars, FIG. 2 is a plan view showing the clip body, FIG. 3 is a development view showing the clip body, and FIG. FIG. 5 is a longitudinal sectional view showing the pole portion, and FIG. 6 is a perspective view of the concrete top end indicator of the first embodiment attached to the horizontal stripes.
As shown in FIG. 1, the concrete top end indicator includes an attachment means 1, a pole 2, a top end display member 3, a fixing means 4, a pole attachment means 5, and a flexible connecting member 6. It is provided as the main configuration.

  More specifically, the attachment means 1 is means for attaching and fixing the lower end portion of the pole 2 to either the vertical bars 7 or the horizontal bars 8, and is constituted by a clip body 1a and a fastening member 1b. ing.

As shown in FIGS. 2 and 3, the clip body 1 a is provided with a pair of substantially parallel two-surface portions 11 and 12 facing each other by bending a strip-shaped steel plate, and a substantially semicircular rear surface portion 13 connecting them. It is formed in a substantially U shape.
A long hole 13a that is long in the longitudinal direction is formed in the center portion in the width direction of the substantially semicircular back surface portion 13.
One substantially parallel two-surface portion 11 is provided with a bolt insertion hole 11a, and the other substantially parallel two-surface portion 12 has a long hole 12a which is long in the longitudinal direction of the clip body 1a and a long hole 12b which is orthogonal to the long hole 12a. And a cross-shaped hole A is formed.
In addition, the long hole 13a drilled in the back surface portion 13 serves to improve the entrance of the concrete into the back surface portion 13 when placing concrete.

As shown in FIGS. 1 and 4, the fastening member 1b serves to fasten and fix a reinforcing bar to the clip body 1a. The fastening bolt 15 has a wedge-shaped head 14 with a wide end, and the fastening bolt 15 And a fastening nut 16 that is screwed onto the screw.
The wedge-shaped head portion 14 has a narrow-width portion 14a at the tip thereof inserted and locked in either the long hole 12a or the long hole 12b constituting the cross-shaped hole A formed in the substantially parallel two-surface portion 12 shown in FIG. The fastening bolt 15 can be inserted into a bolt insertion hole 11 a formed in the substantially parallel two-surface portion 11. The central portion of the cross-shaped hole A is set to a size that allows the fastening bolt 15 to be inserted.
A female threaded hole 51 constituting one of the pole attaching means 5 for detachably attaching the pole 2 is formed in the wide portion 14b at the end of the wedge-shaped head 14.
That is, the wide end portion 1b at the end of the wedge-shaped head portion 14 is formed to be wider than the longitudinal widths of the long holes 12a and 12b constituting the cross-shaped hole A.

As shown in FIG. 5, the pole 2 is composed of a flexible synthetic resin round bar such as diracon.
A male screw 52 is provided on the lower end side of the pole 2 so as to be detachably screwed into a female screw hole 51 formed in the wide end portion 14 b of the wedge-shaped head portion 14.
The male screw 52 constitutes the pole mounting means 5 together with the female screw hole 51, and a round bar-like connecting portion 52b having substantially the same diameter as the pole 2 is integrally provided at the upper end of the male screw 52 via a flange 52a.

The flexible connecting member 6 connects the male screw 52 and the pole 2 and is composed of a flexible rubber pipe, and the shaft center hole 6a is connected to the round rod-like connecting portion 52b of the male screw 52 and the pole 2 from both ends. The male screw 52 and the pole 2 are connected so as to be bendable by press-fitting the lower end portion of the pin.
A groove 2 a is formed along the longitudinal direction of the side surface of the pole 2 as an air vent when press-fitted into the axial hole 6 a of the flexible connecting member 6.

  The top end display member 3 serves to display the top end position, and a cylindrical portion 31 that can be mounted on the outer periphery of the pole 2 so as to be movable up and down, and a disc shape formed at the lower end of the cylindrical portion 31 The top end position display plate (plate-like top end display portion) 32 is integrally formed of synthetic resin.

  The fixing means 4 serves to fix the top end display member 3 at an arbitrary movement position of the pole 2, and is mounted and fixed to the outer periphery of a small diameter portion 31a formed on the upper end side of the cylindrical portion 31. The nut-shaped metal fitting 41 and a thumbscrew 42 screwed into a female screw hole 41a formed in a state of penetrating the side wall of the nut-shaped metal fitting 41 are configured.

  Then, by screwing the thumbscrew 42, the tip of the thumbscrew 42 pushes the side wall of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31 inward to press-contact with the pole 2, thereby displaying the top end display. The member 3 can be fixed at a predetermined position of the pole 2.

Next, operations and effects of the first embodiment will be described.
First, the case where the pole 2 is attached to the longitudinal bars 7 will be described with reference to FIGS.
Since the concrete top end indicator of Example 1 is configured as described above, the clip main body 1a is attached to the longitudinal bars 7 from the lateral direction, and the fastening bolts 15 of the fastening member 1b are connected to the cross of the parallel two-surface portion 12. It inserts from the hole A of the shape, and penetrates the bolt insertion hole 11a of the parallel two-surface part 11. In that case, it inserts so that the narrow part 14a of the wedge-shaped head part 14 may be inserted and latched in the long hole 13a long toward the longitudinal direction of the clip main body 1a. Then, the fastening nut 16 is screwed and fastened to the fastening bolt 15 penetrating the bolt insertion hole 11a, so that the pole 2 is vertically attached and fixed to the vertical bar 7 via the attaching means 1.

Next, the case where the pole 2 is attached to the transverse bar 8 will be described with reference to FIGS.
Since the concrete top end indicator of the first embodiment is configured as described above, the clip main body 1a is attached to the horizontal stripe 8 from either the upper or lower direction (upward in this embodiment), and the fastening member 1b The fastening bolt 15 is inserted from the cross-shaped hole A of the parallel two-surface portion 12 to pass through the bolt insertion hole 11 a of the parallel two-surface portion 11. In that case, it inserts so that the narrow part 14a of the wedge-shaped head 14 may be inserted and locked in the long hole 13b orthogonal to the long long hole 13a toward the longitudinal direction of the clip main body 1a. Then, the fastening nut 16 is screwed and fastened to the fastening bolt 15 penetrating the bolt insertion hole 11a, so that the pole 2 is vertically attached and fixed to the horizontal bar 8 via the attaching means 1.

  Next, when adjusting the position of the top end position display plate 32 to the target top end position, if the thumbscrew 42 is loosened, the pressure contact state of the small diameter portion 31a with respect to the pole 2 is released, and the pole 2 of the top end display member 3 is released. Since the fixed state is released, the top end display member 3 is moved up and down with respect to the pole 2 to adjust the top end position display plate 32 to the target top end position, and the thumbscrew 42 is screwed in this state. As a result, the tip of the thumbscrew 42 pushes the side wall of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31 inward to press-contact the pole 2 so that the top end display member 3 is positioned at a predetermined position on the pole 2. Can be fixed to.

  Next, after placing the ready-mixed concrete and before hardening the ready-mixed concrete, the state in which the male screw 52 is engaged with the female screw hole 51 is released by turning the pole 2 counterclockwise, and the pole 2 can be easily removed from the ready-mixed concrete. Can be extracted.

  As described above in detail, in the concrete top end indicator of the first embodiment, one substantially parallel two-surface portion 11 of the clip body 1a is provided with a bolt insertion hole 11a, and the other substantially parallel two-surface portion. 12 has a cross-shaped hole A composed of a long hole 12a that is long in the longitudinal direction of the clip body 1a and a long hole 12b that is orthogonal to the long hole 12a. Since it can be attached and fixed to either the vertical bars 7 or the horizontal bars 8 simply by manufacturing and preparing the display, the cost can be reduced by reducing the number of parts of the concrete top end display and the work of laying the reinforced floor concrete The effect that it becomes possible to raise the working efficiency in is obtained.

  Further, since the male screw 52 and the pole 2 are connected via the flexible connecting member 6, the flexible connecting member 6 bends even when contacting the concrete supply pipe during movement. Therefore, it is possible to secure the operator's safety and maintain the top end display function because the flexible connecting member 6 is returned to its original shape due to its flexibility. Can be made.

  Further, the flexible connecting member 6 is formed of a rubber pipe, and can be bent between the male screw 52 and the pole 2 by press-fitting the upper end portion of the male screw 52 and the lower end portion of the pole 2 from both ends into the shaft center hole 6a. With this configuration, the male screw 52 and the pole 2 can be easily connected only by press-fitting work.

Further, since the round bar-like connecting portion 52b that can be press-fitted into the rubber pipe via the flange 52a is integrally provided at the upper end of the male screw 52, it is possible to easily press-fit the male screw 52 into the rubber pipe.
Further, since the flange 52a is provided, the male screw 52 can be aligned only by inserting the round bar-like connecting portion 52b until the flange 52a comes into contact with the lower end surface of the rubber pipe.

  Further, since the groove along the longitudinal direction of the pole 2 is formed on the side surface of the pole 2 to be press-fitted into the rubber pipe, the air can be removed when press-fitting into the axial hole 6a of the flexible connecting member 6. Therefore, the press-fitting work of the pole 2 can be performed easily.

  The top end display member 3 includes a cylindrical portion 31 that can be mounted on the outer periphery of the pole 2 so as to be movable up and down, and a disk-like top end position display plate 32 formed at the lower end of the cylindrical portion 31. Thus, the top end display position can be adjusted accurately.

  The fixing means 4 has a nut-like metal fitting 41 attached and fixed to the outer periphery of the small-diameter portion 31a formed on the upper end side of the cylindrical portion 31, and a female screw hole formed so as to penetrate the side wall of the nut-like metal fitting 41. By being composed of the butterfly screw 42 screwed to 41a, the position of the top end position indicator plate 32 can be easily adjusted by loosening the butterfly screw 42, and the thumbscrew 42 is screwed in. Thus, it can be fixed at an arbitrary position.

  Next, another embodiment will be described. In the description of the other embodiments, the same components as those of the first embodiment are not shown, or the same reference numerals are given and the description thereof is omitted, and only the differences are described.

This Example 2 shows the modification of the clip main body 1a in the concrete top end indicator of the said Example 1, and respond | corresponds to the invention of Claim 1,2.
That is, in the second embodiment, as shown in the development view of FIG. 7, two bolt insertion holes 11a and 11b are formed along the longitudinal direction of the clip body 1a in the substantially parallel two-surface portion 11 of the clip body 1a. This is different from the first embodiment.

  Since the second embodiment is configured as described above, as shown in the perspective view of FIG. 8A, the clip main body 1a is fastened to the small-diameter reinforcing bar by inserting the fastening bolt 15 into the bolt insertion hole 11a. As shown in the perspective view of FIG. 8 (b), the clip body 1a can be fastened to the large-diameter reinforcing bar by inserting the fastening bolt 15 into the bolt insertion hole 11b.

  As described above, in the second embodiment, two types of bolt insertion holes 11a and 11b are formed along the longitudinal direction of the clip body 1a, so that one type of top panel display is manufactured and The mounting means 1 can be attached to two or more types of reinforcing bars with different diameters just by preparing them, thereby reducing costs by reducing the number of parts of the concrete top end indicator and laying the reinforced floor concrete An additional effect is obtained in that work efficiency can be increased.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within a scope not departing from the gist of the present invention are included in the present invention.
For example, in the embodiment, a nut-like metal fitting 41 is used as the fixing means 4 and a thumbscrew hole 41a into which the thumbscrew 42 is screwed is formed in the nut-like metal fitting 41. However, the nut-like metal fitting 41 is omitted and the cylindrical portion 31 is directly formed. A thumbscrew hole may be formed.

  Moreover, in Example 2, the same effect is acquired even if the volt | bolt penetration hole 11a is integrally connected with the long hole 13a, as shown in the expanded view of FIG.

A cross-shaped hole 1 mounting means 1a clip body 1b fastening member 11 substantially parallel two-surface portion 11a bolt insertion hole 11b bolt insertion hole 12 substantially parallel two-surface portion 12a elongated hole 12b elongated hole 13 back surface portion 13a elongated hole 14 wedge-shaped head portion 14a width Narrow part 14b Wide part 15 Fastening bolt 16 Fastening nut 2 Pole 3 Top end display member 31 Cylindrical part 31a Small diameter part 32 Disk-like top end position display plate 4 Fixing means 41 Nut-like metal fitting 41a Female screw hole 42 Butterfly screw 5 Pole mounting means 51 Female Threaded Hole 52 Male Thread 52a Flange 52b Round Bar Joint 6 Flexible Connecting Member 6a Shaft Center Hole 7 Vertical Muscle 8 Horizontal Muscle

Claims (6)

Mounting means that can be fixed to the reinforcing bars;
A pole fixed to the reinforcing bar by the mounting means;
A top end display member having a top end display portion mounted on the pole so as to be movable up and down;
Fixing means capable of fixing the top end display member at an arbitrary movement position of the pole;
Consists of
The attachment means includes a clip body and a fastening member,
The clip body is formed in a substantially U-shape provided with a pair of substantially parallel two-surface portions facing each other by bending a strip-shaped steel plate and a substantially semicircular back surface portion connecting them.
A bolt insertion hole is formed in the one substantially parallel two-surface portion, and the other substantially parallel two-surface portion is constituted by a long hole extending in the longitudinal direction of the clip body and a long hole orthogonal to the long hole. A cross-shaped hole is drilled,
The fastening member is composed of a fastening bolt having a wedge-shaped head having a wide end and a fastening nut screwed to the fastening bolt,
The wedge-shaped head is configured such that the narrow portion at the tip of the wedge-shaped head can be inserted and locked in either of the long holes constituting the cross-shaped hole formed in the substantially parallel two-surface portion,
The fastening bolt is configured to be able to be inserted into a bolt insertion hole formed in the substantially parallel two-surface portion,
A female screw hole for removably attaching a pole is formed in the wide portion at the end of the wedge-shaped head,
A concrete top end indicator, wherein the lower end of the pole is provided with a male screw that can be screwed into the female screw hole. In the concrete top end indicator according to claim 1,
Two or more bolt insertion holes are drilled along the longitudinal direction of the clip body. In the concrete top end indicator according to claim 1 or 2,
A concrete top end indicator, wherein the male screw and the pole are connected via a flexible connecting member. In the concrete top end indicator according to claim 3,
The flexible connecting member is formed of a rubber pipe, and the male screw and the pole are connected to each other so as to be bent by press-fitting the upper end portion of the male screw and the lower end portion of the pole from both ends into the axial hole. Concrete top end indicator characterized by. In the concrete top end indicator according to claim 4,
A concrete top end indicator, wherein a round bar-like connecting portion capable of being press-fitted into the rubber pipe via a flange is integrally provided at an upper end of the male screw. In the concrete top end indicator according to claim 3 or 4,
A concrete top end indicator, characterized in that a groove along the longitudinal direction of the pole is formed on a side surface of the pole press-fitted into the rubber pipe.

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