JPS597957Y2 - formwork board - Google Patents

Description

[Detailed description of the invention] The present invention is attached to the formwork plate and can be assembled and disassembled to increase or decrease the number of face plates, and by adopting a retaining member of a commensurate length, the length of the face plate in the connecting direction can be increased. It is designed so that it can be determined appropriately and also maintain sufficient strength.A specific example thereof will be described in detail with reference to the drawings as follows.

1 is a face plate, 2 is an end plate, 3 is a dovetail groove member, 4 is a retaining member, 5 is a restraining member, 6 is a bolt, and 7 is a nut.

The face plate 1 has a regulating surface on the front surface 11, a protrusion 14 with an open groove 13 each having a convex cross section in the center of the back surface 12, step-shaped engaging portions 15a and 15b on both ends, and Each one of the protruding strips 16 a , 16 facing away from each other of the flat protruding strip 16 without the upper step 14 a of the protruding strip 14 on both side ends
It is equipped with b.

The end plate 2 is located at the starting end and the end when a suitable number of face plates 1 are installed in series, and has almost the same structure as the face plate 1.
The structure is such that the step-shaped engaging portions 15a or 15b on different sides of the face plate 1 are eliminated depending on the starting end side or the terminal end side.

Therefore, the reference numerals for face plate 1 are used.

The dovetail groove member 3 closely engages with the side end surface of the end plate 2 that does not have the stepped engagement portion.

That is, it also has a protrusion 31 that engages with the groove formed by the protrusion strip 16a or 16b.

Further, a projecting strip 16a or 16 extends on the back surface 12 of the end plate 2.
Form the groove 32 that embraces
The rear surface of this extended portion is provided with a dovetail groove 35 along the corner edge in the longitudinal direction and a dovetail groove 36 whose operating directions parallel to each other on the inner side thereof form an angle of 90 degrees.

The dovetail groove 35 forms an angle with the surface 11 and acts as shown in FIG. 3, and the dovetail groove 36 acts in the direction of the surface 11, that is, as shown in FIG. 2. Alternatively, if the connection is limited to one of the connections shown in FIG. 3, it is not necessary to provide both.

The retaining member 4 is provided across the back surface through each connected face plate, and its length is determined depending on the length of the connected face plates.

This member 4 has central protrusions 14 on both ends of separate end plates 2, 2.
, 14, the jaws 41, 41 can rest on the shoulders 42, 42, and reliefs 43, 44 for the central protrusion 14 of each face plate 1 and the flat protrusion 16 appearing on the back surface of the connecting part are bored in the middle. , and bolt holes 46 . are provided at positions facing the grooves 13 and 45 of each protrusion 14 and 16 . 47 is worn.

In the central protrusion 14 of the face plate 1, a notch 48 is provided in the upper part 14a to allow the bridge to cross, so the relief 43 formed in this member is
has the same shape as the relief 44 of the flat protrusion 16.

A contact piece 49 is formed between each protrusion and comes into contact with the back surface of each face plate.

The restraining member 5 has a groove-shaped cross section that fits into the upper part 14a of the central protrusion 14 of the end plate 2, and one sleeve piece 51 is thicker than the other sleeve piece 52 by the thickness of the jaw 34 of the dovetail groove member 3. It's shorter.

Then, the engagement hole 53 of the retaining member 4 is inserted into this longer sleeve piece 52.
is drilled, and a bolt hole 54 is formed facing the groove 13 of the protrusion 14.
are drilled at appropriate intervals.

The bolt 6 may be an ordinary bolt, and the nut 7 may be of any suitable shape, but should be large enough to prevent free rotation when inserted into the groove 13 or 45.

In the drawings, reference numeral 81 denotes a fixing device having separate dovetails 82 and 83 that fit into the dovetail grooves 35 and 36, and the rotation of the cam 84 brings the dovetails 82 and 83 closer together to connect the formwork plates. It is something.

The illustrated formwork plate is constructed as follows.

A required number of face plates 1 are engaged at the step portions 15 a and 15 b at the side ends, and end plates 2 are similarly arranged at both ends.

A dovetail groove member 3 is slidably fitted onto the end surface of the end plate 2 on the side of the non-engaging step portion.

A retaining member 4 is provided across the back surface of all the face plates, a restraining member 5 is fitted into the central protrusion 14 of the face plate at both ends, and a bolt 6 is screwed into a nut 7 inserted in a groove 13 and tightened.

Each bolt hole 46 of the retaining member 4. Bolts 6 are also inserted through 47 and screwed together with nuts 7 placed in each groove 13.45 and tightened.

In the dovetail groove member 3, the protrusion 31 fits into the groove of the protrusion piece 16a or 16b, the groove 32 embraces the protrusion piece 16a or 16b, and the jaw 34 engages the shoulder 33 of the protrusion 14 with the restraining member 5. Since it is restrained, the force that tends to rotate due to the tightening force of the dovetail groove 35 or 36 is restrained by the restraining member 5.

Also, the deviation in the direction of the protrusions between the face plates is caused by the notch 48 and the retaining member 4.
The displacement in the direction perpendicular to the protrusions is prevented by the engagement of each protrusion with the notches 43 and 44 of the retaining member 4.

Furthermore, each protrusion acts as a rib on each face plate itself, increasing the pressure against it.

When you want to disassemble it, remove the bolt 6, remove the restraining member 5,
Once the retaining member 4 is removed, the rest is easy.

According to the present invention, since it is constructed as described above, by suitably combining a small number of parts, it is possible to easily provide a die-cutting board that is strong and has the required dimensions. It has various effects, such as being able to be easily disassembled and used for the next use.

[Brief explanation of drawings]

Fig. 1 is a partially exploded and partially omitted perspective view showing a concrete example of the form plate according to the present invention, in which one face plate and two end plates are used; FIG. 3 is a plan view schematically showing how the formwork plates are connected. 1... Face plate, 2... End plate, 3...
...Dovetail groove member, 4...Retention member, 5...
... Suppression member, 6 ... Bolt, 7 ...
・Nut, 12...Back surface, 13...Open groove, 14...Central protrusion, 14a...
Upper stage part, 15a, 15b...Stepped engagement part, 16...Flat protrusion, 16a, 16b.
... Protruding strip, 31... Protruding strip, 32...
... groove, 33 ... eyebrows, 34 ... chin,
35, 36...Dovetail groove, 41...Jaw,
42...shoulder, 43.44...run away, 4
5...Groove, 46.47...Bolt hole,
48... Notch, 49... Cover piece, 51
．． 52...Sleeve piece, 53...Engagement hole, 5
4...Bolt hole.

Claims (4)

[Scope of utility model registration request] (1) An open grooved protrusion with a convex cross section in the center of the back surface, a step-shaped engagement part at both ends, and a flat protrusion without an upper step of the protrusion, one protrusion facing away from each other. an end face plate having a structure without a step-like engagement part on one side of the face plate, and a shoulder of the central protrusion of the face plate that closely engages with the end face of the unattached part of the end face plate; A dovetail groove member having a jaw that rests on the back surface and a longitudinal dovetail groove on the back surface, and a dovetail groove member that is provided on the back surface through each connected face plate, and both ends reach the central protrusion of each end plate, and each protrusion member is provided in the middle. A retaining member that fits into the notch in the upper part, and a retaining member that fits in the upper part of the central protrusion of the end plate to restrain the jaws of the dovetail groove member. A form plate provided with a restraining member having an engagement hole and a bolt hole, a bolt inserted into the bolt hole, and a nut that slides into a groove of a protrusion and screws with the bolt. (2) The form board according to claim (1), wherein the dovetail member has two dovetail grooves arranged at 90 degrees to each other. (3) The retaining member has a contact piece that abuts the back surface of each face plate between each protrusion. Utility model registration claim No. 1 (1)
Formwork board described in ). (4) The form board according to claim (1) of the utility model registration, wherein both ends of the retaining member are provided with jaws that rest on the shoulders of the central protrusions of the respective end plates.