JP7078773B1 - rubber seal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packing having high versatility and easy to install. SOLUTION: The packing 1 is mounted between a wall body (bearing wall 2) through which a tie rod 3 is inserted and a nut 6 mounted on the tie rod 3, and the tie rod 3 is inserted inside and an outer peripheral portion thereof. An inner cylinder member 10 having a male screw portion 11 formed therein, and an outer cylinder member 30 having a female screw portion 31 formed with a female screw portion 31 into which the male screw portion 11 is screwed into the inner peripheral portion while the inner cylinder member 10 is inserted. It is provided with an urging means 50 that urges a rotational force that relatively rotates the other with respect to one of the inner cylinder member 10 and the outer cylinder member 30. The inner cylinder member 10 is inserted through the tie rod 3 in a non-locked state, and the urging means 50 is characterized in that the inner cylinder member 10 urges a rotational force in a direction protruding from the outer cylinder member 30. [Selection diagram] Fig. 1

Description

The present invention relates to packing.

As a technique for preventing the bearing wall from rising in a wooden building, a method of installing a hole-down hardware on the bearing wall leg to connect the pillar to the foundation and the pillar on the lower floor is common.

However, in recent years, with the increase in strength of bearing walls and the middle layer of wooden buildings, the pulling force acting on the edges of bearing walls in the event of a typhoon or earthquake has increased, and with existing hole-down hardware, bearing walls have increased. It may not be possible to prevent the floating of the wall.

As a coping method for such a problem, a method of installing a tie rod so as to penetrate multiple floors from the lowest floor can be considered. In this method, the tie rod is inserted into the through hole formed in the upper and lower frames of each layer, the beam, etc., and the tie rod is tightened and fixed to the beam, etc. of each layer with a nut to disperse and support the pulling force. ..

By the way, in wooden buildings, it is known that wood such as columns and beams shrinks over time due to drying, and the gaps between members shrink due to vertical load, resulting in subduction of the entire building. It is also known that the amount of subduction is larger in medium-rise buildings than in low-rise buildings. Therefore, when a tie rod is used for a medium-rise building, a large gap is created between the beam or the like (specifically, the steel plate mounted on the beam or the like) and the nut due to the shrinkage of the wood, and the tie rod is used. There is a risk that the lifting prevention function will not be exhibited and it will not be possible to prevent the lifting of the bearing wall due to an earthquake or the like.

Therefore, conventionally, a large number of techniques for demonstrating the function of preventing the tie rod from floating even when the wood shrinks or the like have been developed and put into practical use.

For example, Patent Document 1 describes a coupler for connecting the ends of a pair of vertically divided tie rods, to which an outer cylinder member to which one tie rod is connected and an outer cylinder member to which the other tie rod is connected and outer. It includes an inner cylinder member that is rotatably inserted into the cylinder member and moves along the axial direction of the outer cylinder member, and an elastic member that rotationally urges the inner cylinder member in the insertion direction with respect to the outer cylinder member. .. The outer cylinder member has a first female screw portion formed on the inner peripheral surface, and the inner cylinder member has a first male screw portion formed on the outer peripheral surface and screwed into the first female screw portion of the outer cylinder member. And a second female threaded portion formed on the inner peripheral surface and into which a second male threaded portion formed on the outer peripheral surface of the other tie rod is screwed. In such a coupler, when the shrinkage of wood or the like occurs, the inner cylinder member moves relative to the inside of the outer cylinder member while rotating due to the urging force of the elastic member, and is drawn into the outer cylinder member. .. Further, with the relative movement of the inner cylinder member, the other tie rod moves relative to the inside of the outer cylinder member and is drawn into the outer cylinder member. This makes it possible to prevent the tie rods from rising due to the shrinkage of the wood.

Japanese Unexamined Patent Publication No. 2014-20423

However, in the coupler described in Patent Document 1, the tie rods are divided into upper and lower parts, and each tie rod must be attached to each of the outer cylinder member and the inner cylinder member, which requires a lot of labor and time. .. Further, the outer cylinder member and the inner cylinder member had to be prepared according to the outer diameter dimension of the tie rod, and the versatility was low.

The present invention has been devised from such a viewpoint, and an object of the present invention is to provide a packing having high versatility and easy to install.

In order to solve the above problems, the present invention is a packing mounted between a wall body into which a tie rod is inserted and a nut mounted on the tie rod, and the tie rod is inserted inside and a male on the outer peripheral portion. An inner cylinder member in which a threaded portion is formed, an outer cylinder member in which a female screw portion into which the inner cylinder member is inserted and a female screw portion into which the male screw portion is screwed is formed, the inner cylinder member and the said. The inner cylinder member includes an urging means for urging one of the outer cylinder members to rotate the other relative to each other, the inner cylinder member inserts the tie rod in a non-locked state, and the urging means means. The inner cylinder member urges a rotational force in a direction protruding from the outer cylinder member, and is a coil spring arranged so as to surround the outer cylinder member. One end of the coil spring is the inner cylinder member. The other end of the coil spring is connected to the outer cylinder member .

According to the packing of the present invention, when the wood such as the wall body dries and shrinks, the gap between the nut and the wall body or the like (specifically, the steel plate on the wall body side) becomes large, but the urging means is inside. Since the cylinder member is rotated relative to the outer cylinder member to project the inner cylinder member from the outer cylinder member, the packing expands in accordance with the increase in the gap. As a result, the looseness of the nut can be eliminated, and the wall body is securely fixed. Further, the packing can be easily installed by installing it on the wall body, inserting the tie rod into the wall in a non-locked state, and tightening the nut 6. Further, if the outer dimension of the tie rod is smaller than the inner diameter of the inner cylinder member, it is possible to handle tie rods having a plurality of diameters, and the versatility is increased. Further, if the coil spring is connected to both the outer cylinder member and the inner cylinder member in a compressed state, the coil spring is restored to the original shape when the gap between the wall body and the nut becomes large, so that the inner cylinder member is restored. Automatically rotates and protrudes from the outer cylinder member.

The packing of the present invention preferably further includes a stopper for fixing the inner cylinder member to the outer cylinder member in a state where the inner cylinder member is retracted with respect to the outer cylinder member. According to such a configuration, the packing in the extension standby state can be easily installed by removing the stopper after installing the packing between the wall body and the nut with the inner cylinder member fixed to the outer cylinder member by the stopper. can do.

In the packing of the present invention, it is preferable that a flat surface portion for locking the spanner is formed on at least one of the outer peripheral portion of the inner cylinder member and the outer peripheral portion of the outer cylinder member. According to such a configuration, the packing work can be easily tightened.

In the packing of the present invention, the male-threaded portion and the female-threaded portion are reverse-threaded, and the inner cylinder member preferably extends from the outer cylinder member while rotating clockwise when viewed from above. According to such a configuration, since the nut in contact with the upper part of the inner cylinder member also rotates to the right at the same time as the rotation, the nut goes down, and the packing is extended and pushed down. That is, it is possible to obtain a stretching effect twice the screw pitch with respect to the rotation of the inner cylinder member.

The packing of the present invention is highly versatile and can be easily installed.

It is a perspective view which shows the packing which concerns on embodiment of this invention. It is an exploded perspective view which shows the packing which concerns on embodiment of this invention. It is a figure which shows the packing which concerns on embodiment of this invention, (a) is a plan view, (b) is a side view. It is a figure which shows the packing which concerns on embodiment of this invention, (a) is a horizontal sectional view, (b) is a vertical sectional view. It is a vertical sectional view which shows the extended state of the packing which concerns on embodiment of this invention. It is a figure which shows the state which installed the packing which concerns on embodiment of this invention, (a) is the vertical sectional view which shows the original state of packing, (b) is the vertical sectional view which shows the extended state of packing.

The packing according to the embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same elements are designated by the same reference numerals, and duplicate description will be omitted.

In the present embodiment, as shown in FIG. 6, a case where the packing 1 is installed at the upper end portion of the tie rod 3 penetrating the bearing wall 2 in the wooden building will be described as an example. The lower end of the tie rod 3 projects downward from the lower end of the bearing wall 2 and is embedded in the foundation 4. The upper end of the tie rod 3 projects upward from the upper end of the bearing wall 2. A steel plate 5 serving as a washer is laid on the upper surface of the bearing wall 2. A through hole is formed in the steel plate 5, and the upper end portion of the tie rod 3 inserts the through hole of the steel plate 5. A packing 1 is inserted through the upper end of the tie rod 3 into which the steel plate 5 is inserted, and a nut 6 is screwed into the tie rod 3 that further protrudes above the packing 1. When the wooden building has a plurality of floors, the tie rod 3 penetrates the plurality of floors.

The packing 1 is mounted between the steel plate 5 laid on the bearing wall (wall body) 2 into which the tie rod 3 is inserted and the nut 6 mounted on the tie rod 3. As shown in FIGS. 1 and 2, the packing 1 includes an inner cylinder member 10, an outer cylinder member 30, and an urging means 50.

As shown in FIGS. 3 to 4, the inner cylinder member 10 is a cylindrical member into which the tie rod 3 can be inserted in a non-locked state (not screwed) inside, and is from the outer diameter of the tie rod 3. Also has a large inner diameter. A male screw portion 11 is formed on the outer peripheral portion of the inner cylinder member 10. The male screw portion 11 is formed in a portion inserted into the outer cylinder member 30 at the lower portion of the inner cylinder member 10. The male screw portion 11 is not formed on the upper end portion of the outer circumference of the inner cylinder member 10, and is a columnar circumferential portion 12. The upper end of the inner cylinder member 10 projects upward from the outer cylinder member 30, and the upper end surface of the inner cylinder member 10 abuts on the nut 6.

The circumferential portion 12 is formed with a stopper locking hole 13 and a urging means locking hole 14. The stopper locking hole 13 is a hole into which one end of the stopper 25, which will be described later, is inserted, and extends along the radial direction of the inner cylinder member 10. The locking hole 14 for the urging means is a hole into which one end (upper end) of the coil spring 51 constituting the urging means 50 is inserted, and extends along the tangential direction of the inner peripheral surface of the inner cylinder member 10. ing.

A flat surface portion 15 is formed on the upper end edge of the circumferential portion 12. The flat surface portions 15 are for locking the spanners, and are formed in pairs so as to be parallel to each other.

The outer cylinder member 30 has an inner cylinder member 10 inserted therein, and a female screw portion 31 is formed on the inner peripheral portion. The male screw portion 11 of the inner cylinder member 10 is screwed into the female screw portion 31, and when the inner cylinder member 10 rotates relative to the outer cylinder member 30, the inner cylinder member 10 becomes the outer cylinder member 30. Moves in the axial direction with respect to. The male screw portion 11 and the female screw portion 31 are reverse threads, and when the inner cylinder member 10 rotates clockwise when viewed from above, the male screw portion 11 and the female screw portion 31 rise with respect to the outer cylinder member 30.

A stopper locking hole 33 is formed on the upper end surface of the outer cylinder member 30. The stopper locking hole 33 is a hole into which the other end (lower end) of the stopper 25 is inserted, and extends downward from the upper end surface. The stopper locking holes 33 are provided at four locations, and are arranged on the upper end surface of the outer cylinder member 30 at predetermined equal intervals. The stopper 25 is a rod-shaped member for preventing the inner cylinder member 10 from rotating with respect to the outer cylinder member 30, and is hung between the stopper locking holes 13 and 33.

A locking hole 34 for urging means is formed at the lower end of the outer peripheral surface of the outer cylinder member 30. The locking hole 34 for urging means is a hole into which the other end (lower end) of the coil spring 51 is inserted, and extends along the radial direction from the outer peripheral surface of the outer cylinder member 30.

A flat surface portion 35 is formed on the lower end edge of the outer peripheral surface of the outer cylinder member 30. The flat surface portions 35 are for locking the spanners, and are formed in pairs so as to be parallel to each other.

The urging means 50 urges one of the inner cylinder member 10 and the outer cylinder member 30 to rotate the other relative to each other. In the present embodiment, the urging means 50 rotates the inner cylinder member 10 relative to the outer cylinder member 30. The urging means 50 urges the rotational force in the direction in which the inner cylinder member 10 protrudes from the outer cylinder member 30 (the direction in which the inner cylinder member 10 rotates clockwise when viewed from above). The urging means 50 is composed of a coil spring 51 arranged so as to surround the outer cylinder member 30.

The coil spring 51 is mounted in a wound and compressed state, and the coil spring 51 expands while rotating to urge the inner cylinder member 10 in a clockwise rotation direction. One end (upper end) of the coil spring 51 is connected to the inner cylinder member 10, and the other end (lower end) of the coil spring 51 is connected to the outer cylinder member 30. Specifically, the coil spring 51 includes a coil main body wound in a coil shape, a rising portion 52a rising upward from the coil main body, and a horizontal portion 52b bent from the tip of the rising portion 52 and extending horizontally. It is provided with a protruding portion 52c that protrudes inward in the radial direction at the lower end of the coil body. The horizontal portion 52b at the upper end of the coil spring 51 is inserted into the locking hole 14 for urging means of the inner cylinder member 10, and the tip portion thereof faces in the direction of rotating the inner cylinder member 10 to the right. The protruding portion 52c at the lower end of the coil spring 51 is inserted into the locking hole 34 for urging means of the outer cylinder member 30 and faces the center side of the outer cylinder member 30. In this way, the coil spring 51 does not shift in the radial direction because the protruding portion 52c projects and is locked in the radial direction of the outer cylinder member 30. Further, since the horizontal portion 52b at the upper end of the coil spring 51 projects in the tangential direction of the inner cylinder member 10, it is easy to rotate the inner cylinder member 10.

As shown in FIG. 6A, the packing 1 having the above configuration is laid on the bearing wall (wall body) 2, the tie rod 3 is inserted therein, and the nut 6 is inserted at the upper end of the tie rod 3. It is easy to install because it can be installed just by tightening. The packing 1 is sandwiched between the steel plate 5 and the nut 6 screwed to the upper end portion of the tie rod 3 in a compressed state (rolled state) of the coil spring 51. Before the packing 1 is installed, the inner cylinder member 10 is non-rotatably fixed to the outer cylinder member 30 by the stopper 25, so that the compressed state of the coil spring 51 is maintained. After the packing 1 is installed, the inner cylinder member 10 can rotate with respect to the outer cylinder member 30 by removing the stopper 25. At this time, by tightening the nut 6, the inner cylinder member 10 cannot protrude upward, so that the compressed state of the coil spring 51 of the packing 1 is maintained.

When the wood shrinks from this state due to drying, vertical load, or the like, as shown in FIG. 6B, the upper end portion of the bearing wall 2 and the steel plate 5 are lowered, and the gap between the bearing wall 2 and the nut 6 is increased. Then, the inner cylinder member 10 can move upward, and the inner cylinder member 10 rotates clockwise by the urging means 50 and rises with respect to the outer cylinder member 30 (see FIG. 5). The inner cylinder member 10 rotates and rises to a position where the nut 6 is pressed from below. That is, the gap between the nut 6 and the steel plate 5 on the bearing wall 2 side becomes large, but the urging means 50 rotates the inner cylinder member 10 to the right relative to the outer cylinder member 30, and the inner cylinder member Since the 10 is projected from the outer cylinder member 30, the packing 1 expands following the increase in the gap. As a result, the looseness of the nut 6 can be eliminated, and the bearing wall 2 is securely fixed.

A tie rod having an outer diameter smaller than the inner diameter of the inner cylinder member 10 can be used for tie rods having a plurality of diameters, and has high versatility.

Since the urging means 50 is a coil spring 51 and is hung between the outer cylinder member 30 and the inner cylinder member 10 in a compressed state, the coil spring is used when the gap between the steel plate 5 and the nut 6 becomes large. When the 51 is restored to its original shape, the inner cylinder member 10 automatically rotates and protrudes from the outer cylinder member 30, so that it is possible to always follow the increase in the gap.

In the present embodiment, since the stopper 25 for fixing the inner cylinder member 10 to the outer cylinder member 30 in a state where the inner cylinder member 10 is retracted with respect to the outer cylinder member 30 is further provided, the stopper 25 is used. By removing the stopper 25 after installing the packing 1 with the cylinder member 10 fixed to the outer cylinder member 30, the packing 1 in the extension standby state can be easily installed.

Since the flat surface portions 15 and 35 for locking the spanner are formed on the inner cylinder member 10 and the outer cylinder member 30, the packing 1 can be easily tightened.

Further, in the present embodiment, as shown in FIG. 5, when the inner cylinder member 10 rotates clockwise, the nut 6 in contact with the upper portion due to the frictional force between the upper end surface of the inner cylinder member 10 and the lower end surface of the nut 6. Also rotates to the right. Here, since the male screw portion 11 and the female screw portion 31 are reverse threads, when both are rotated clockwise, the inner cylinder member 10 rises relatively with respect to the outer cylinder member 30, and the nut 6 with respect to the tie rod 3. Will go down. That is, since the packing 1 is stretched and pushed downward by the nut 6, it is possible to obtain an stretching effect (effect of filling the gap) twice the screw pitch with respect to the rotation of the inner cylinder member 10.

Although the embodiment for carrying out the present invention has been described above, the present invention is not limited to the above-described embodiment, and the design can be appropriately changed without departing from the spirit of the present invention. For example, in the above embodiment, the stopper 25 is hung between the stopper locking holes 13 and 33, but the stopper 25 is not limited to this. One may be locked to the flat surface portion 15 of the inner cylinder member 10, and the other may be locked to the stopper locking hole 33 of the outer cylinder member 30.
Further, the urging means 50 is composed of a coil spring 51, but is not limited thereto.

1 Packing 2 Bearing wall (wall body)
3 Tie rod 6 Nut 10 Inner cylinder member 11 Male screw part 15 Flat part 21 Coil spring 25 Stopper 30 Outer cylinder member 31 Female screw part 35 Flat part 50 Biasing means 51 Coil spring

Claims (4)

A packing attached between the wall body into which the tie rod is inserted and the nut attached to the tie rod.
An inner cylinder member in which the tie rod is inserted and a male screw portion is formed in the outer peripheral portion, and a female screw portion in which the inner cylinder member is inserted and the male screw portion is screwed are formed in the inner peripheral portion. The outer cylinder member and the urging means for urging one of the inner cylinder member and the outer cylinder member to rotate the other relative to each other are provided.
The inner cylinder member is inserted through the tie rod in a non-locked state.
The urging means is a coil spring that urges a rotational force in a direction in which the inner cylinder member protrudes from the outer cylinder member and is arranged so as to surround the outer cylinder member.
A packing characterized in that one end of the coil spring is connected to the inner cylinder member, and the other end of the coil spring is connected to the outer cylinder member. The packing according to claim 1 , further comprising a stopper for fixing the inner cylinder member to the outer cylinder member in a state where the inner cylinder member is retracted with respect to the outer cylinder member. The packing according to claim 1 or 2 , wherein a flat surface portion for locking a spanner is formed on at least one of an outer peripheral portion of the inner cylinder member and an outer peripheral portion of the outer cylinder member. The male threaded portion and the female threaded portion are reverse threads.
The packing according to any one of claims 1 to 3 , wherein the inner cylinder member extends from the outer cylinder member while rotating clockwise when viewed from above.

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