JPH0654806U - Mounting device for the underfloor ventilation port using a driving formwork - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] The present invention is an underfloor ventilation by a driving method formwork in which a driving formwork is integrally formed in the foundation concrete and an underfloor ventilation port is easily attached to this. The present invention relates to a mouth mounting device, which reduces foundation work costs, promotes labor saving, and improves the construction accuracy of construction work. [Structure] Inside the concrete foundation 1, the driving form 2
Are integrated with each other by interposing a step portion 3 on the inner periphery of the driving form 2, and the step portion 3 is superposed with protrusions protruding on both sides of the ventilation port and on the outside of the lower part to form the ventilation port and the driving form 2 A metal spring bent in a U shape is interposed between and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an installation device for an underfloor ventilation port using a driving formwork, characterized in that a driving formwork is integrally formed inside a basic concrete, and an underfloor ventilation port is easily attached to this.

[0002]

[Prior art]

 As shown in Fig. 10, the conventional ventilation frame is mounted by setting the foundation concrete a and hardening the concrete so that the opening for attaching the ventilation port is formed in a part of the concrete form. Remove the concrete formwork, place the wooden base b on the foundation concrete a, insert the ventilation port c into the opening, and drive the nail d into the wooden base b from the ventilation port c to open the ventilation port c. It was installed by filling the space between both sides and the lower part of the base with the concrete a.

[0003]

[Problems to be solved by the device]

 If the ventilation opening is installed as described above, after the foundation concrete is placed, the formwork is removed, the opening for the underfloor ventilation opening is modified, or if the opening is too small, the inner surface of the opening will be It took a long time and a lot of labor because the concrete was installed and the underfloor ventilation port was attached with mortar.

[0004]

[Means for Solving the Problems]

 Therefore, the present invention was proposed in order to reduce the foundation construction cost, promote labor saving, and improve the construction accuracy of the construction work, and the structure is predetermined in advance inside the foundation concrete formwork. Place the driving formwork in the position, and after the concrete hardens, provide a step on the inner circumference of the integrated driving formwork, and overlap the ridges protruding on both sides of the ventilation port and the outside of the lower part on that step. A metal spring is interposed between the ventilation port and the driving form. By doing so, the casting formwork and the foundation concrete will be integrated, and the work of installing mortar and installing the underfloor ventilation port is no longer necessary as in the conventional construction. Conventionally, not only was it difficult to replace or damage the underfloor ventilation opening in the rear, and it was difficult to replace it, but mortar work and painting work were also required, but under this method, removing metal springs made it possible to carry out underfloor ventilation. It is easy to replace the mouth.

[0005]

【Example】

 Next, the structure will be described with reference to the drawings. Reference numeral 1 is a foundation concrete, which is integrally formed with a square driving form 2 interposed at the time of its placement. 3 is a stepped portion provided on the inner circumference of the driving form 2. Reference numeral 4 denotes a ventilation port that fits inside the driving form 2, and projecting ridges 5 are provided on the left and right sides of the ventilation port, which are overlapped with the step portion 3 provided on the inner circumference of the driving form 2. 6 is a metal spring, for example, a leaf spring is bent in a U shape, and its free end is formed into an arc 7. This is press-fitted and fixed between the inner surface of the driving form 2 and the ventilation port 4. Reference numeral 8 denotes a concave portion on the inner periphery of the driving form 2 in which a portion into which the metal spring 6 is pressed is deeply cut out. Reference numeral 9 denotes a ridge (may be a groove) provided on the outer periphery of the driving form 2 in order to integrate the driving form 2 well with the basic concrete 1. Reference numeral 10 is a base placed on the foundation concrete 1. 11 is a mortar for the outer wall.

[0006]

[Action]

 Since the present invention has the above-mentioned structure, it is integrated with the basic concrete 1 through the interposition of the square concrete driving form 2 at the same time as the placing of the basic concrete 1, and the step 3 in the driving form 2 is The protrusions 5 of the ventilation frame opening are overlapped, and a metal spring 6 is press-fitted and fixed between the side surface of the ventilation opening 4 and the inner surface of the driving mold 2. To remove the ventilation port 4, insert a metal spring 6 between the inner surface of the driving form 2 and the side surface of the ventilation port 4 and pry it off to remove the metal spring 6. You can remove the mouth 4.

[0007]

[Effect of device]

 According to the present invention, since the driving form 2 is installed on the form of the foundation concrete 1 and integrated by concrete placing, the formwork for the underfloor ventilation port is unnecessary, and the placing of the foundation concrete as in the past is not required. There is no occasional deformation, lifting, or displacement of the ventilation frame, eliminating the chiseling work to adjust the concrete after curing it, and shortening the foundation construction period, saving labor in construction work. It has the effect of accelerating the conversion.

[Brief description of drawings]

FIG. 1 is a front view of the device of the present invention without a ventilation port.

FIG. 2 is a plan view of FIG.

3 is a cross-sectional view of FIG.

FIG. 4 is a cross-sectional view of the device of the present invention.

5 is a vertical sectional side view taken along the line AA of FIG.

6 is a vertical cross-sectional view taken along line BB of FIG.

[Figure 7] Front view of the ventilation port

FIG. 8 is a perspective view of a metal spring.

FIG. 9 Partial front view

FIG. 10 is a conventional vertical sectional side view.

[Explanation of symbols]

 1 Basic concrete 2 Driving form 3 Steps 4 Ventilation port 5 Projection 6 Metal spring

Claims (1)

[Scope of utility model registration request] Inside the basic concrete 1, the driving form 2 is interposed and integrated, and the step 3 is provided on the inner circumference of the driving form 2, and the step 3 protrudes to both sides of the ventilation port 4 and the outside of the lower part. Article 5
A device for mounting an underfloor ventilation port by a driving type mold, characterized in that a metal spring 6 bent in a U shape is interposed between the ventilation port 4 and the driving mold 2.