JPS61196065A - Mold frame for constructing foundation of concrete - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to formwork for constructing concrete foundations.

[Conventional technology]

Reinforced concrete foundations for residential buildings have a convex cross-section, and concrete is poured into the mold using a pair of inverted-shaped lower formwork made of 2M thick iron plates and an upper formwork made of the same material. It was constructed by pouring, but assembling the upper and lower formwork was troublesome.

[Problem that the invention seeks to solve]

For this reason, the present inventor has already proposed in Japanese Patent Application No. 59-269316 a structure in which the upper and lower formworks are easily and reliably supported by a support consisting of a bottom plate and a vertical frame; The problem is that the grooves on the bottom of the frame get clogged with concrete, making repeated use difficult.

[Means for solving problems]

The present invention involves cutting and raising the upper end of the lower formwork in places with a width corresponding to the width of the vertical frame, bending the upper end of this cut and raised part horizontally, and fitting the upper end into the groove of the vertical frame. The upper edge of the lower formwork was positioned below the groove of the upper formwork.

[For production]

Therefore, in the present invention, the grooves of the upper formwork are not clogged with concrete.

〔Example〕

As shown in the first diagram, a horizontally elongated rectangular plastic bottom plate 2.2 is provided in the upper groove 1 for foundation construction.
... are placed at regular intervals. Figure 2 (a).

As shown in FIG. 3(A), the plastic vertical frame 3 erected on the bottom plate 2 has an upper side 3a as shown in FIG. 2(A).
has a horizontal chevron shape and has four legs 4, 4, 5°5 extending downward from both sides of the upper side 38 and the outer end of the oblique side 3b. The upper surface of the bottom plate 2 has four locking portions 6.6.7.7 into which the lower ends of the bottom plate 714 and 4°5.5 are fitted.

As shown in FIG. 2(0), this locking portion 6.7 consists of a pair of protrusions 10 and 11 whose upper ends are open in a Y-shape, and one of the protrusions 10 has a pair of guide pieces whose upper ends are open. Frame 12, leg 4 with 12
, 5 are formed, and the other protruding piece 11 is formed with a projection 15 that engages with the groove 14 at the lower end of the leg 4.5.

A reinforcing bar 1 extending in the longitudinal direction of the groove 1 is provided at the outer end of the oblique side 3b.
6. Grooves 17, 17 for fitting are formed.

At both ends of the upper surface of the bottom plate 2, locking portions 21, 21 are provided to receive the lower ends of the inverted lower mold frame 20 made of a steel plate having a thickness of 211 mm. As shown in FIG. 2(0), this locking portion 21 and 21 also consist of a pair of protrusions 22 and 23 whose upper ends are open in a Y-shape, and as shown in FIG. 3(a), one of the protrusions is The piece 22 is provided with a protrusion 25 with which a protrusion 24 formed by folding the lower formwork 20 engages. The upper end edge 28 of this lower formwork 20 is cut and raised in places with a width corresponding to the width of the vertical frame 3, and the upper end 27 of this cut and raised part 26 is bent horizontally. Instead of providing the protrusion 24, a hole 29 into which the protrusion 25 fits as shown in FIG. 3(b) may be provided.

As shown in FIGS. 2 and 3 (A), projections 30, 30 are provided on both sides of the upper side 3a of the vertical frame 3, and the upper end of the cut-out portion 26 of the lower formwork 20 is provided on the outside of the projections 30, 30. Grooves 31 , 31 into which 27 are fitted are provided in the horizontal direction, and these grooves 31 , 3
1 is provided with a stopper 32° 32 for locking the upper end 27 of the lower formwork 20.

As shown in FIG. 2(a), the upper formwork 33 made of a steel plate with a thickness of 2 mm is made up of a pair of box-shaped members 34, 34, and the bottom surface thereof has a longitudinally extending portion into which the projection 30 is fitted. Groove 35
has.

The upper ends of the members 34, 34 are connected to each other by connectors 36 as shown in FIG. 1 (El). The lower surface of this connector 36 has a groove 37°3 into which the upper end of the member 34 is fitted and held.
7 is formed by protrusions 38, 38, .

Next, how to use this device will be explained. As shown in the first diagram, bottom plates 2, 2, . . . are placed laterally in the soil groove 1 at regular intervals. Next, on top of that, for example, Utility Application 57-1180
Place a cylinder frame as shown in No. 15. Next, insert the legs 4.4.5.5 of the vertical frame 3 between the cylinder frames, and fit the lower ends into the locking parts 6.6.7°7 of the bottom plate 2. and a reinforcing bar 16 extending in the longitudinal direction of the frame within the groove 17.17.
, 16 are fitted. In this way, the lower ends of the lower forms 20, 20 are engaged with the locking parts 21, 21, and the upper ends 27 of the cut and raised parts 26 are fitted into the grooves 31, 31. Next, the upper formwork 33
, 33 are fitted into the upper projections 30 , 30, and the upper ends of the upper formworks 33 , 33 are connected in places with the connecting tools j.
6, and are connected to each other at a constant interval.

When concrete is poured between the upper formworks 33, 33 and the lower formworks 20, 20 and hardened, a foundation having a convex cross section is constructed. At this time, since the upper edge 28 of the lower formwork 20 is located below the groove 35 of the upper formwork 33, the groove 35 will not be clogged with concrete. Next, by removing the connectors 36, 36, the upper forms 33, 33 can be removed.

Also, break the stoppers 32 , 32 and insert a chisel or the like from above to
By breaking 2, the lower forms 20 and 20 can also be removed.

FIG. 4 shows another example of the upper formwork 20, in which an embankment 2 is provided at the upper edge 28 to prevent concrete from flowing out.
8a is formed vertically.

〔effect〕

As described above, in the present invention, when the upper end of the cut edge of the lower end is fitted into the groove of the vertical frame, the upper edge of the lower form is located below the groove of the upper form, and the upper edge of the lower form is located below the groove of the upper form. The grooves are not clogged with concrete, and the upper formwork can be used repeatedly.

[Brief explanation of drawings]

FIG. 1(A) shows an outline of an embodiment of the present invention.
(U) is an end view of the connector, Figure 2 (A) is a front view of the vertical frame, (El) is a front view of the bottom plate, and Figure 3 (A) is a perspective view of the upper and lower formwork of the vertical frame. FIG. 4A is a perspective view of another example of the lower formwork, and FIG. 4 is a perspective view of another example of the lower formwork. 2...Bottom plate, 3...Vertical frame, 4,5...
...Leg, 6゜7...Locking part, 16...
...Reinforcement bar, 17...Groove, 20...Lower formwork, 21...Locking part, 26...Cut part, 27... ...Top edge, 28...Top edge, 3
1... Groove, 33... Upper formwork, 34...
...Groove, 30...Protrusion. Note 3 field book g

Claims (2)

[Claims] (1) Consisting of a bottom plate extending horizontally to the foundation and a vertical frame erected on the bottom plate, the top surface of the bottom plate is provided with a locking part that engages the lower legs of the vertical frame, and the top surface of the bottom plate is provided with a locking part that engages with the lower legs of the vertical frame. A locking part is provided to receive the lower end of the inverted L-shaped lower form, and the upper edge of this lower form is cut and raised in places with a width corresponding to the width of the vertical frame, and the upper end of this cut and raised part is made horizontally. A formwork for constructing a foundation for a concrete groove, which is bent and has a groove for receiving the upper end of the inverted L-shaped lower formwork on both sides of the upper part of the vertical frame, and a part for fitting the lower end of the upper formwork. (2) The formwork for constructing a concrete foundation according to claim 1, wherein the bottom plate and the vertical frame are made of synthetic resin.