JP3364716B2 - Seismic foundation anchor bolt - Google Patents

Description

Detailed Description of the Invention

[0001]

[Detailed Description of the Invention]

[0002]

2. Description of the Related Art In a conventional building such as a wooden construction, an anchor bolt for fixing a base to a foundation is embedded in concrete of the foundation so that the upper portion projects and the projecting upper portion penetrates the foundation. The nut was screwed on and fixed from the base.

[0003]

Therefore, since the vibration at the time of the earthquake is directly transmitted from the foundation to the fixed base, the building vibrates as it is, the furniture falls, the painted wall is peeled or dropped, the roof tile falls, etc. Is easy to occur and has problems.

[0004]

In view of the above, the present invention has been earnestly studied, and as a result, the seismic-resistant foundation anchor bolt according to claim 1 is provided with a fixing portion for fixing to the foundation and a lower bolt male screw portion. The lower bolt, the saucer recessed portion, the saucer male screw portion and the saucer portion provided with the connecting male screw portion, and the female screw portion for screwing and connecting the lower bolt male screw portion and the connecting male screw portion Joint nut, an upper bolt with a spherical body and an external thread for the upper bolt, a cap-shaped nut with a central hole, a recessed portion for the nut, and a female thread for the nut, and an anti-seismic material with an expanded diameter. And a fastening nut that is screwed to the upper bolt male thread portion by interposing a washer member.

Further, the seismic-resistant foundation anchor bolt according to the second aspect of the invention is a bottom bolt provided with a fixing portion for fixing to a foundation, a saucer recessed portion, and a saucer portion having a saucer male screw portion, and a sphere provided with an upper portion. An upper bolt with a male thread on the bolt, a bag-shaped nut with a central hole, a recessed portion for the nut, and a female thread on the nut, a seismic mitigation material that expands upward, and a washer member on the male thread on the upper bolt. It is provided with a fastening nut that is screwed by interposing.

Further, in the earthquake-resistant foundation anchor bolt according to claim 3, an earthquake-resistant mat is provided between the foundation of the building and the base, and the upper bolt is penetrated through the earthquake-resistant mat.

An object of the present invention is to provide an anchor bolt with a universal joint means composed of a saucer recessed portion, a spherical body and a nut recessed portion,
By providing a substantially conical seismic mitigation material, it is possible to easily shake the upper bolt in the horizontal direction by the universal joint means against horizontal vibration during an earthquake, and to prevent the upper bolt from shaking in a substantially conical shape. (EN) An anchor bolt which can be permitted by the space inside the relaxation material.

[0008]

According to the present invention, a lower anchor bolt and an upper anchor bolt are used as a base anchor bolt for fixing a base to a foundation of a building, a sphere is provided at a lower end of the upper bolt, and the sphere is internally connected to or fixed to a lower bolt. The universal joint means composed of the saucer recessed portion of the saucer portion and the nut recessed portion of the bag-shaped nut is interposed, and the upwardly expanded substantially conical seismic mitigation material formed of an elastic member is provided. Allows the upper bolt to vibrate horizontally in an earthquake,
Therefore, it becomes possible to reduce the horizontal vibration in the event of an earthquake, and further, the effect is increased by interposing a seismic mat between the foundation and the foundation.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a seismic base anchor bolt of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic explanatory view showing a state where a seismic anchor bolt of the present invention is embedded in a concrete foundation, and FIG. 2 is a main part of an embodiment of the seismic anchor bolt of the present invention. FIG. 3 is an assembly perspective view, FIG. 3 is an exploded view of essential parts of an embodiment of the earthquake-resistant anchor bolt of the present invention, and FIG. 4 is an assembly of essential parts of the embodiment of the earthquake-resistant anchor bolt of the present invention. FIG. 5 is a cross-sectional view, FIG. 5 is an exploded cross-sectional view of an essential part of an embodiment of the earthquake-resistant anchor bolt of the present invention, and FIG. 6 is an exploded view of an essential part of the next embodiment of the earthquake-resistant anchor bolt of the present invention. FIG.

The present invention relates to a base anchor bolt for seismic resistance, which absorbs and reduces the vibration in a horizontal direction particularly during an earthquake of a wooden building. More specifically, it is freely attached between the lower bolt 1 and the upper bolt 4. The seismic anchor bolt according to claim 1, wherein the seismic anchor bolt is provided with a substantially cone-shaped seismic mitigating material 6 that allows the upper bolt 4 to vibrate in a horizontal direction while interposing a joint means. Is a foundation anchor bolt for fixing the base B to the foundation A of the building, which is a lower bolt 1 in which a fixing portion 1a for fixing the foundation B in the foundation A and a lower bolt male screw portion 1b are screwed upward.
A saucer portion 2 having a hemispherical shape, a saucer recessed portion 2a having a hemispherical shape, a saucer male screw portion 2b at an upper edge portion, and a connecting male screw portion 2c provided below, and the lower bolt male screw portion 1b. Female screw part 3a for screwing and connecting with the male screw part 2c for connection
A joint nut 3 in which a screw is installed, and an upper bolt 4 in which a spherical body 4a to be inserted into the saucer recessed portion 2a of the saucer portion 2 is provided at a lower end and an upper bolt male screw portion 4b is screwed above the base B to penetrate the base B. A central hole 5a through which the upper bolt 4 penetrates, a hemispherical nut concave portion 5b into which the upper portion of the spherical body 4a is inserted, and a nut female screw portion 5c which is screwed to the saucer male screw portion 2b of the saucer portion 2 are screwed. A bag-shaped nut 5 and a substantially conical seismic shock absorber 6 in which the lower end is attached to the center hole 5a of the bag-shaped nut 5, the diameter is increased upward and the upper bolt 4 is penetrated.
And a fastening nut 8 that is screwed into the upper bolt male screw portion 4b of the upper bolt 4 with a washer member 7 interposed therebetween.

Furthermore, the seismic resistant anchor bolt according to claim 2 is a base anchor bolt for fixing a base B to a foundation A of a building, and a fixing portion 1 for fixing the base B in the foundation A below.
a, a lower bolt 1 provided with a substantially top-shaped saucer portion 2 having a hemispherical saucer recessed portion 2a and a saucer male screw portion 2b at an upper edge, and a saucer recessed portion 2a of the saucer portion 2 A ball 4a to be inserted is provided at the lower end, and an upper bolt 4 having an upper bolt male screw portion 4b screwed above the base B is inserted, and a central hole 5a through which the upper bolt 4 is inserted and the upper part of the ball 4a are inserted. A female female screw portion 5c of the hemispherical nut which is screwed to the male concave portion 5b of the nut 5 and the male male screw portion 2b of the tray 2.
And a center hole 5 of the bag-shaped nut 5
a substantially cone-shaped seismic mitigation material 6 having a lower end attached to a, a diameter increased upward, and the upper bolt 4 penetrating, and the upper bolt 4
The upper bolt male screw portion 4b is provided with a washer member 7 and a fastening nut 8 screwed together.

Furthermore, the seismic resistant anchor bolt according to claim 3 is the seismic resistant anchor bolt according to claim 1 or 2, wherein a single layer or a layer is provided between the foundation A and the foundation B of the building. A plurality of layers of seismic resistant mats 9 are interposed and the upper bolts 4 are penetrated through the seismic resistant mat 9.

That is, the seismic base anchor bolt of the present invention is made of a material such as iron. The bottom part is fixed to the base A, and the top part of the base A is projected upward so that the projected part is The base B is fixed to the foundation A of the building by penetrating the base B and fixing the upper end.

As shown in FIG. 1, the lower bolt 1 has a fixing portion 1a which is fixed in the lower foundation A and is bent at a right angle, and the tip of the fixing portion 1a is bent in a substantially U shape. Even if a strong force is applied, it does not fall off, and a lower bolt male screw portion 1b to be screwed with a female screw portion 3a of the joint nut 3 described later is screwed on the upper side.

Further, as shown in FIGS. 3 to 5, the tray portion 2 is of a substantially top shape, and has a hemispherical shape into which a lower hemisphere of a spherical body 4a provided at the lower end of an upper bolt 4 described later is inserted. And a saucer male screw portion 2 for forming a saucer recessed portion 2a of the
b is screwed, and a connecting male screw portion 2c for screwing with a joint nut 3 described later is further provided below.

Next, the joint nut 3 is a female member for screwing the lower bolt male screw portion 1b screwed above the lower bolt 1 and the connecting male screw portion 2c screwed under the pan 2 respectively. The screw portion 3a is screwed inside.

Next, the upper bolt 4 is provided at its lower end with a sphere 4a to be inserted into the saucer recessed portion 2a of the saucer portion 2, and the upper portion is made to project from the upper surface of the base A so that the projected portion penetrates the base B. Then, a fastening nut 8 described later is screwed and fixed to the upper bolt male screw portion 4b screwed upward on the upper surface of the base B.

Further, the bag-shaped nut 5 is substantially cup-shaped, and the center hole 5 through which the upper bolt 4 penetrates is formed at the center of the bottom portion.
While forming a, a hemispherical nut concave portion 5b into which the upper hemisphere of the spherical body 4a provided at the lower end of the upper bolt 4 is inserted is formed. A nut female screw portion 5c that is screwed with the saucer male screw portion 2b of the saucer portion 2 is screwed.

The substantially conical seismic relaxation material 6 is made of a flexible material such as rubber or synthetic resin, and has a substantially conical cylindrical shape whose diameter is expanded upward. The lower end is attached to the center hole 5a of the bag-shaped nut 5, and the upper bolt 4 is penetrated inside.

Further, the fastening nut 8 is the upper bolt 4
Although it is screwed to the upper bolt male screw portion 4b screwed above, the space between the upper surface of the base B and the fastening nut 8 is made of flexible rubber as a cushioning material or metal for preventing loosening. The washer member 7 made of, for example, is interposed.

In order to embed the foundation anchor bolt of the present invention in the foundation A, first, the lower bolt male screw portion 1b of the lower bolt 1 and the connecting male screw portion 2c of the saucer portion 2 are joint nuts. 3 and the female screw portion 3a of the cap nut 3 are connected by screwing, and the upper bolt 4 is penetrated through the center hole 5a of the bag-shaped nut 5 to be provided in the nut recess 5b of the bag-shaped nut 5 at the lower end of the upper bolt 4. The upper hemisphere of the spherical body 4a is inserted, and the lower hemisphere of the spherical body 4a is inserted into the saucer recessed portion 2a formed in the saucer portion 2, and the saucer male screw portion 2b of the saucer portion 2 and the nut female of the bag-shaped nut 5 are inserted. The screw portion 5c is securely screwed, the substantially cone-shaped seismic shock absorbing material 6 is passed through the upper bolt 4, and the lower end is attached to the center hole 5a of the cap nut 5.

In this state, it is embedded in the concrete of the foundation A, and the portion below the universal joint means is completely adhered to the concrete. A space is created by the material 6, and further, the base B is penetrated above the upper bolt 4 to screw the fastening nut 8 into the upper bolt male screw portion 4b.

Next, the seismic-resistant basic anchor bolt according to claim 2 is intended to reduce the joint nut 3 and to be made into a small component. The saucer portion 2 is directly provided above the lower bolt 1, and the like. Is the same as the seismic-resistant foundation anchor bolt according to claim 1, and therefore its detailed description is omitted.

Further, in the seismic-resistant foundation anchor bolt according to claim 3, a seismic-resistant mat 9 is interposed between the foundation A and the base B. The seismic-resistant mat 9 may be a single layer or a plurality of laminated layers. A multi-layer structure may be used, and a through hole is formed in the earthquake-resistant mat 9 together with the base B and the upper bolt 4 is penetrated.

[0026]

The seismic-resistant foundation anchor bolt of the present invention is
With the above-mentioned configuration, the universal joint means composed of the saucer recessed portion of the saucer portion, the spherical body of the upper bolt, and the nut recessed portion of the cap nut makes it possible to freely vibrate the upper bolt in the horizontal direction in the event of an earthquake. By providing a seismic mitigation material, a space is created in the concrete of the foundation, and horizontal vibration of the upper bolt is allowed, so sudden vibration of the base is suppressed and vibration of the upper building is reduced. It is also possible to recover after the earthquake,
Even when the building is returned to its original position without significant damage to the foundation, etc., the anchor vault can be moved by the universal joint means, so it can be easily moved and restored.
It is an epoch-making and highly practical invention.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing a state in which an earthquake-resistant anchor bolt according to an embodiment of the present invention is embedded in a concrete foundation.

FIG. 2 is a perspective view for assembling essential parts of the embodiment of the earthquake-resistant anchor bolt of the present invention.

FIG. 3 is an exploded explanatory view of essential parts of an embodiment of an earthquake-resistant anchor bolt of the present invention.

FIG. 4 is an assembled sectional view of a main part of an embodiment of an earthquake-resistant anchor bolt of the present invention.

FIG. 5 is an exploded cross-sectional view of essential parts of an embodiment of an earthquake-resistant anchor bolt of the present invention.

FIG. 6 is an exploded cross-sectional view of an essential part of a seismic resistant anchor bolt according to a next embodiment of the present invention.

[Explanation of symbols]

A basics B foundation 1 Lower bolt 1a Fixed part 1b Lower bolt male thread 2 saucer 2a saucer recess 2b Receptacle male screw part 2c male thread for connection 3 joint nut 3a Female screw part 4 Upper bolt 4a sphere 4b Male part of upper bolt 5 bag nuts 5a central hole 5b Nut recess 5c nut female thread 6 Seismic mitigation material 7 Washer member 8 Fastening nut 9 Earthquake-resistant mat

Claims (3)

(57) [Claims] 1. A foundation anchor bolt for fixing a base to a foundation of a building, a fixing portion for fixing the foundation in a lower portion, a lower bolt having a lower bolt male screw portion screwed upward, and a hemispherical upper portion. Of the saucer recessed portion and the saucer male screw portion on the upper edge and the male screw portion on the lower side provided with the connecting male screw portion, the lower bolt male screw portion and the connecting male screw portion are screwed together. A joint nut in which a female screw portion to be connected is screwed, a sphere to be inserted into the saucer concave portion of the saucer portion is provided at the lower end, and an upper bolt in which an upper bolt male screw portion is screwed above the base through which the base is penetrated, A central hole through which the upper bolt penetrates, a hemispherical nut recess for inserting the upper part of the sphere, a nut that engages with the pan male screw portion of the pan portion, and a female nut portion that is screwed, and a bag-shaped nut. Attach the lower end to the center hole of the nut and expand the diameter upward An earthquake-resistant basic anchor comprising: a substantially cone-shaped seismic damping material that penetrates the upper bolt; and a fastening nut that is screwed onto the upper bolt male thread portion of the upper bolt with a washer member interposed therebetween. bolt. 2. A foundation anchor bolt for fixing a base to a foundation of a building, comprising a fixing portion for fixing in the foundation below, a hemispherical saucer recessed portion above and a saucer male screw portion at an upper edge. A lower bolt provided with a substantially top-shaped saucer portion provided with, and an upper bolt having an upper bolt male screw portion screwed above through which the sphere is provided at the lower end of which a sphere to be inserted into the saucer recessed portion of the saucer portion is provided, A central hole through which the upper bolt penetrates, a hemispherical nut recess for inserting the upper part of the sphere, and a nut nut that is screwed with a pan male screw part of the pan part, and a bag-shaped nut, and the bag. -Shaped seismic mitigation material that attaches the lower end to the center hole of the shaped nut, expands the diameter upward, and penetrates the upper bolt, and screwing the upper bolt male thread of the upper bolt with a washer member And a fastening nut for Seismic for the foundation anchor bolts. 3. A single-layer or multi-layer earthquake-resistant mat is interposed between the foundation of the building and the base, and the upper bolt is penetrated through the earthquake-resistant mat. The seismic-resistant foundation anchor bolt according to claim 2.