JPS6339014Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tool that can be used for assembling and dismantling concrete formwork, and in particular to a spanner for constructing concrete formwork that enables tightening of bolts of various sizes with a single spanner. It is something.

The formwork construction spanner of the present invention (hereinafter simply referred to as a spanner) consists of two types of members that engage with hexagonal bolt heads and nuts, and three types of members that engage with the flat parts of bolts, etc. It has a handle member that protrudes from the end of the main body on both sides and can be fixed in that position, so that ordinary formwork assembly and disassembly work can be performed only with the wrench of the present invention. It is something.

In addition, because the handle is formed so that it can be moved on both sides of the spanner, it is more versatile than conventional boxes and spanners, which have limited uses due to the directional nature of their handles. Its use is not limited at all and can be adapted to any situation.

In places such as concrete formwork construction sites, where the footing is poor, cluttered, and workers have a wide range of movement, it is very difficult to use different tools such as spanners for different types of screws. However, the present invention completely eliminates these inconveniences, and also has the advantage that all work can be done with a single wrench due to its extremely simple structure. .

In particular, in the present invention, since the small diameter part of the hexagonal nut can be engaged with the hexagonal bolt head provided inside the cone-shaped locking member, the cone-shaped locking member, which conventionally required a special tool, This also has the advantage that handling of the stopper member is extremely easy.

Before explaining the spanner of the present invention, the concrete formwork to which the tool of the present invention is applied will be described.As shown in FIG. The spacing rod 37 embedded in the concrete wall 20 and the large diameter portion 31 of the formwork support 30 attached to the tip thereof touch and support the inside of the formwork panel 21, and the outside of the formwork Then, the washer 23 supported by the formwork fastening rod 25
2 is fixed.

The formwork fastening rod 25 has a bolt portion 26 formed at one end to fix the washer 23 with a nut 24, and a large diameter portion 27 formed at the other end, which is drilled from the end at the center. A female threaded portion 28 is provided, and by screwing the bolt 35 of the formwork support 30 that protrudes through the hole in the formwork into this female thread and tightening it, the end of the large diameter portion 27 and The formwork panel 21 is sandwiched between the large diameter portion 31 and supported.

Further, a flat portion 29 is provided at the base of the large diameter portion 27 of the formwork fastening rod 25, and is used as a locking portion for rotating the rod 25.

The formwork support 30 is cone-shaped, and the large diameter portion 3
1 and a small diameter part 32, the small diameter part 32 is provided with a female thread 33 drilled inward from the end thereof, and the male thread of the form spacing retaining rod 37 is screwed into this threaded part 33 and engaged. be stopped.

The end of the large diameter portion 31 is formed into a thin annular shape, and a bolt portion 35 is provided to protrude from the center of the recess 34 .

A hexagonal head 36 is formed at the base of the bolt 35, and when fixing or removing the holding rod 37 to the threaded portion 33, a wrench is hooked to the head 36 to tighten the support 30. I'm trying to rotate it.

The spanner 1 of the present invention has a main body 1' having a thickness of 5
It is made in the shape of a flat plate with a width of about m/m, and is formed so that the width becomes narrower from the wide middle part 4 toward the front and rear.

A front end opening 3 is provided in the front end 2 of the main body 1' so as to cut inward from its tip, and in the embodiment, the opening 3 has a diameter that decreases as it goes deeper. Large diameter part 3A, medium diameter part 3
Three stages of engagement portions, B and small diameter portion 3C, are provided, and each can be used properly depending on its purpose, as will be described later.

A hole 4' is bored in the central wide portion 4, and a box member 5 is passed through this hole and fixed.

The box member 5 has a large diameter portion at one end and a small diameter portion at the other end, and has a large diameter hole 6 and a small diameter hole 6' inside.
The inner walls of the holes 6, 6' are each provided with a notched step so as to engage with a hexagonal head of a bolt or nut. Note that the main body 1' other than the handle member described later can be integrally formed by casting or the like.

A rectangular hole 8 is provided in the approximately central portion 7 of the main body 1'.
Similar to the opening 3, the hole is engaged with a flat portion formed by crushing the end portion or the like, or is used for tightening metal fittings for fixing the column member.

A round hole 10 is provided in the rear end 9 of the main body 1'.
A handle 14 is provided through the hole 10.

The handle 14 consists of a cylinder 15 in the center, large diameter parts 17 at both ends, and a groove 16 provided in the front part of the large diameter part 17. When the groove 6 is engaged with the ball 12, the handle 14 It is designed to be fixed in a state where it protrudes to one side.

A spring 13 is inserted into the back of a small diameter hole 11 that is bored inward from the rear end of the rear end portion 9 of the main body 1' so as to pass through the center of the hole 10. is placed. The ball 12 is adapted to fix the handle 14.

Each engaging member 3 of the spanner 1 of the present invention described above,
5, 8, and 10 must be provided so that their centers coincide with the center of the main body 1', and unless there is a special need, they are not provided eccentrically.

Next, in order to assemble or disassemble concrete formwork using the wrench of the present invention, please refer to Figures 3 and 4.
As an example can be seen in the figure, each member of the spanner 1 is used as follows.

Each stage of the opening 3 of the front end 2 of the spanner 1 is connected to the flat part 29 of the formwork fastening rod 25 or the formwork spacing holding rod 37.
It is used to engage and rotate members of various sizes, such as the flat part of the.

The large diameter hole 6 and the small diameter hole 6', which engage the hexagonal bolt head, engage the nut 24 and the hexagonal head 36, respectively, to rotate them.

Although not shown in this embodiment, the hole 8 in the central portion 7 is used for rotating a member having a flat end, such as a joint member used for fixing a beam.

When the handle member uses the engagement hole 6 of a nut or the like, the handle 14 is used with the ball 12 engaged in the groove 16', and the spanner 1 can be easily inserted by hand without the handle hitting other members. It is designed so that it can be rotated.

Further, when using the engagement hole 6', the ball 12 is adapted to be engaged with the groove 16.

As mentioned above, with the spanner of the present invention,
A series of operations such as assembling and dismantling concrete forms have the advantage that they are simpler and easier to handle than conventional methods, and can be performed reliably.

[Brief explanation of the drawing]

The drawings show the spanner of the present invention and its embodiments; Fig. 1 is a side view of the spanner, Fig. 2 is a plan view,
3 and 4 are schematic diagrams showing examples of use, FIG. 5 is a layout diagram of each member during construction of a concrete form, and FIGS. 6A and 6B are cross-sectional and side views of the cone-shaped member. In the figure, 1...Spanner, 1'...Body, 2...Front end, 3...Front end opening, 3A...Large diameter part, 3B
...Medium diameter part, 3C...Small diameter part, 4...Central wide part, 4'...Hole, 5...Box member, 6...Large diameter hole, 6'...Small diameter hole, 7...Center Part, 8... hole,
9...Rear end, 10...Round hole, 11...Small diameter hole,
12...Ball, 13...Spring, 14...Handle, 15...Cylindrical part, 16, 16'...Groove, 1
7, 17'...Large diameter part, 20...Concrete wall,
21...Formwork panel, 22...Butter material, 23...
Washer, 24...Nut, 25...Formwork fastening rod, 2
6... Bolt, 27... Large diameter part, 28... Female threaded part, 29... Flat part, 30... Concrete form support, 31... Large diameter part, 32... Small diameter part, 3
3... Female thread, 34... Recess, 35... Bolt,
36... Hexagonal bolt head, 37... Formwork spacing retaining rod.

Claims (1)

[Scope of utility model registration request] It is formed of an elongated plate-like body, and has a front end opening at the front end, a long hole at the center, and a handle supported in the hole provided at the rear end so that the position of the handle can be adjusted. A box member is fixed approximately in the middle of the elongated hole, and a plurality of stepped scissors are formed in the front end opening so that they can be engaged with various flat parts, and the box member includes: A large diameter opening and a small diameter opening are provided from both sides toward the center, and a protrusion that engages with the outer periphery of the nut is provided on the inner circumferential wall of the opening, and the handle member has a cross section approximately half in diameter near both ends thereof. A spanner for constructing concrete formwork, characterized in that a circular groove is provided and the handle can be fixed in a state protruding to one side by a stopper member consisting of a spring and a ball provided in a hole in the spanner body.