JPH0332676Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention a. Industrial application field The present invention is an expandable metal fitting for temporary construction, such as a wall connecting metal fitting to connect a vertical frame pipe and a wall to prevent the collapse of scaffolding, and an expandable metal fitting for balconies, etc. This relates to the improvement of projecting part support fittings, reinforcing bar support fittings for foundation reinforcement work, etc.

b. Prior Art Conventional extensible fittings for temporary construction such as those mentioned above include, for example, those that use bar screws to adjust the dimensions by the length thereof, and those that expand and contract and connect pipes with a double structure inside and outside. There are those that can be stopped, or those that can be finely adjusted using the rod screw in addition to that.

The latter type of expansion/contraction locking means involves inserting, for example, a simple rod-shaped pin into an adjustment hole formed in the inner or outer pipe, or pushing the pin provided on the outer pipe toward the inner pipe using a spring. Some types are equipped with a locking means for pushing, and others are equipped with a locking means for pushing a pin provided on the inner pipe side toward the outer pipe side using a spring.

c. Problems that the invention aims to solve Among the conventional expandable fittings for temporary construction mentioned above, those that use only rod screws for dimensional adjustment have a limited range of expansion and contraction, so several types are available, from long to short. There is a need. In addition, the pipe has a double structure that allows it to expand and contract.
A lockable type has the advantage that one type can be used for both long and short lengths. However, there is a problem with the expansion/contraction locking means, and if a rod-shaped pin is simply inserted from the outer pipe to the inner pipe, it is necessary to pull out the pin once and insert it each time the expansion/contraction adjustment is made, resulting in poor workability. In addition, when the outer pipe is equipped with a locking means that uses a spring to push the pin toward the inner pipe, it is difficult to work because it requires a considerable amount of force to pinch the pin head and pull it out against the spring when adjusting the expansion and contraction. However, since the pin head directly related to locking is always exposed,
If cement, etc. adheres to the pin during construction or if it is handled roughly, the pin head etc. may be quickly damaged and may become inoperable. Furthermore, if the inner pipe is equipped with a locking means that uses a coil spring to push the pin toward the outer pipe, it is necessary to push the tip of the pin protruding from the hole in the outer pipe against the spring when adjusting the expansion or contraction.
It cannot be done by hand, and requires a thin rod-like tool such as a screwdriver, which is inconvenient.

In addition, there is also the problem that those having a threaded rod often become unrotatable due to cement etc. adhering to the threaded portion during construction.

The present invention is an attempt to solve the problems of the conventional expandable fittings for temporary construction. That is,
The purpose of this is not only to be able to adjust dimensions from short to long with a single pin, but also to improve workability by making it easy to operate the pin in and out when adjusting expansion and contraction, and to prevent cement adhesion and damage. To provide an extensible metal fitting for temporary construction, which eliminates malfunctions caused by.

(b) Structure of the invention (a) Means for solving the problem This invention is based on the expansion and contraction adjustment holes 2 formed in the inner pipe 1.
One of the telescopic fittings for temporary construction is equipped with a telescopic locking means A that engages a pin 4 from an outer pipe 3 to lock both pipes 1 and 3, as the telescopic locking means A. A pin 4 is placed inside the box-shaped case 6 provided on the outer pipe 3.
can protrude toward the expansion/contraction adjustment hole 2 side of the inner pipe 1,
A spring 9 is provided, and a lever 8 rotatably supported on a horizontal shaft 7 is provided, one side of the lever 8 is connected to the pin 4, and the other side of the lever 8 is connected to the lever 8. Pressing part 1 for pulling out the pin, pushing the other side against the force of the spring 9
0 is provided from the outside of the case 6 toward the inside.

In the above configuration, the material is preferably iron. The spring 9 of the telescopic locking means A is attached to the lever 8 as shown in the figure.
It may be provided between the side on which the pin 4 is provided and the inner surface of the case 6, but it is not limited thereto, and it may be provided between the outside pipe 3 and the side on which the holding portion 10 of the lever 8 is formed. . The holding part 10 may be provided separately from the lever 8 so as to protrude above the case 6 as shown in the figure, but a part of the lever 8 may also be used as the holding part 10, or it may be provided as a part of the lever 8 to the side of the case 6. It may be provided so as to protrude. In the figure, 12 is a pin hole formed in the outer pipe 3.

In addition, as shown in FIG. 3, it is desirable that a protective pipe 11 be enclosed in a device having an adjusting threaded rod 5. The protective pipe 11 is longer than the maximum length that the threaded rod 5 can be drawn out, and has a thickness that allows it to be fitted onto the pipe 1 on which the threaded rod 5 is screwed. It is best to install it closer to the front.

b. Function The use condition of the telescopic fitting for temporary construction of the present invention is as follows. First, to adjust the dimensions, press the holding part 10 of the telescopic locking means A. As a result, the pin 4 is locked on the opposite side of the lever 8 whose central portion is supported by the shaft 7.
is pulled out from the state where it had been engaged with the adjusting hole 2 of the inner pipe 1 under the force of the spring 9.
Now, the inner pipe 1 and the outer pipe 3 are free, so if you loosen the presser part 10 at the position where the appropriate dimensions are obtained while stretching or contracting both 1 and 3, the spring 9
The pressed pin 4 engages with any adjustment hole 2 of the inner pipe 1. If the holding part 10 is then removed, the pin 4 is inserted into the adjustment hole 2 by the force of the spring 9 and is locked in this state.

If the device has a threaded rod 5 for fine adjustment, it may be expanded or contracted by turning it. This will now make the telescopic fitting the desired size.

In the above case, the operation of the locking means A during expansion/contraction adjustment is simply an act of pushing the presser foot 10, so it is very easy to operate, unlike the act of pulling out with force, and there is no other need. It is convenient because no tools are required. Also, the protruding part from case 6 is
Normally, only a part of the holding part 10 is exposed and the inside is protected, so there is almost no chance of cement etc. adhering to it and causing malfunction. Similarly, even if handled roughly, the parts other than the presser part 10 are protected within the case 6, so they will not become unusable due to damage. It will be safer if the holding part 10 is made separate from the lever 8 as shown in the figure, or if the holding part 10 is provided on the side.

In addition, if the screw rod 5 for adjustment is provided as described above, and the protective pipe 11 is attached to the screw rod 5, when the screw rod 5 is pulled out, the protective pipe 11 will also be removed by the same amount as the screw rod 5. be drawn out. Therefore, the threaded rod 5 is always protected by being surrounded by the pipe 11, and there is no possibility that the threaded rod 5 becomes unrotatable due to adhesion of cement or the like, and there is no need for cleaning.

c. Example The one shown in Fig. 3 is one in which the present invention is used as a wall connecting fitting, and the three ends of the outer pipe are connected to the inner wall 13.
An eye bolt 15 is attached to the joint part 14 of the screw rod 5, and a vertical frame pipe 1 is attached to the tip of the threaded rod 5.
A clamp 17 for connection to 6 is attached. For other types of metal fittings, such as overhang support metal fittings and reinforcing bar support metal fittings, members suitable for each purpose may be attached to both ends of the main metal fitting.

C. Effects of the invention As is clear from the above, the extensible fitting for temporary construction of the invention has the following effects.

a With this invention, the dimensions can be adjusted from short to long due to the double structure of the inner and outer pipes and the locking means, and the dimensions can be finely adjusted with the threaded rod, so it can be used in any size. I can do it.

b. Easy to operate when adjusting expansion and contraction. That is, unlike the conventional expansion and contraction locking means, in the present invention, the pin is pulled out from the adjustment hole of the inner pipe by simply pressing the presser part 1 lightly, and after expansion and contraction, the user only needs to remove his finger from the presser part. Therefore, unlike conventional products, no other tools are required, and it can be operated easily and quickly even while wearing gloves at the work site.
It is extremely easy to work with.

c Fewer breakdowns, etc. In other words, since the locking means of the present invention is located inside the case, compared to conventional pin heads with exposed pins, it is less likely to get stuck with cement or be handled roughly, resulting in malfunction or failure. It can be prevented as much as possible.

In addition, if the device has a threaded rod for adjustment and a protective pipe as described above is fitted therein, as the threaded rod is pulled out, the protective pipe is also pulled out by that amount. Therefore, since the threaded rod is always covered with the protective pipe, there is no adhesion of cement or the like to the threaded portion, and the threaded rod can always be rotated smoothly without the need for cleaning or other effort.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, in which Fig. 1 is a cutaway plan view of the main part when the telescopic locking means is locked, Fig. 2 is a cutaway plan view of the main part when the locking is released, and Fig. 3 is a cutaway plan view of the main part when the locking means is released. FIG. 3 is a partially cutaway plan view of the wall connection fitting. Drawing code A... Telescopic locking means A, 1... Inner pipe,
2... Adjustment hole, 3... Outer pipe, 4... Pin, 5... Threaded rod, 6... Case, 7... Short shaft, 8... Lever, 9... Spring, 10... Presser part, 11... Protective pipe.

Claims (1)

[Claims for Utility Model Registration] In one of the expansion/contraction adjustment holes 2 formed in the inner pipe 1,
Engage the pin 4 from the outer pipe 3, and connect both pipes 1,
In the telescopic fitting for temporary construction with a telescopic locking means A designed to lock the pin 4, the pin 4 is provided in a box-shaped case 6 provided on the outer pipe 3 as the telescopic locking means A.
can protrude toward the expansion/contraction adjustment hole 2 side of the inner pipe 1,
A spring 9 is provided, and a lever 8 rotatably supported on a horizontal shaft 7 is provided, one side of the lever 8 is connected to the pin 4, and the other side of the lever 8 is connected to the lever 8. Pressing part 1 for pulling out the pin, pushing the other side against the force of the spring 9
0 is provided from the outside of the case 6 to the inside.