JP3327861B2 - Anchor bracket anti-vibration device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a head, in which an end of an anchor socket inserted into a fixing hole formed in a wall or the like is pushed into the interior thereof by a pushing member such as an anchor bolt. The present invention relates to a vibration damping device for an anchor fitting to be expanded.

[0002]

2. Description of the Related Art Conventionally, many types of post-installed anchors of this type have been provided.
No. 8413 discloses an anchor fitting in which a vertically split groove is formed at one end of an anchor socket, a plug having a trapezoidal cross section is inserted into the groove, and the plug is inserted into the hole with a special tool. Stops at the bottom of the hole and expands one end of the sleeve, so that the anchor socket is supported in the hole, and if a bolt is screwed into the anchor socket, the bolt is supported by the anchor socket. Japanese Patent Application Laid-Open No. 6-3305 discloses a similar device.
No. 25 and Japanese Unexamined Patent Publication No. Hei 6-116953.

In the driving anchor described in Japanese Patent Application Laid-Open No. Sho 59-147110, a vertically split groove is formed at one end of an anchor socket, and a conical taper having a predetermined length is formed on an inner surface thereof. When the push-spread member inserted into the anchor socket is driven toward the bottom of the hole, the taper portion is expanded. Similar to this, there is an anchor fitting described in Japanese Utility Model Laid-Open No. 5-94333.

[0004]

By the way, in the above-mentioned conventional anchor, the anchor socket is fixed to the fixing hole preliminarily formed in the ceiling wall, which is a building material, by the pushing-out member, and then the anchor socket is attached to the anchor socket. An angle material for holding equipment such as a predetermined air conditioner is fixed to a building material by a shoulder bolt, but the shoulder bolt and the angle material and the anchor socket are directly connected to each other or through a metal washer. It is common that they are linked.

[0005] For this reason, for example, vibrations such as earthquakes and ceiling wall construction are transmitted directly from the angle members to equipment such as an air conditioner, which causes malfunctions and amplified large vibration noise. Moreover, the large vibration may cause the anchor socket to be loosened and fall off from the fixing hole in some cases.

[0006] On the other hand, there is a possibility that the operating vibration of equipment such as an air conditioner is transmitted to the ceiling wall or the like via the angle member or the angle member, thereby generating vibration noise at the angle member or the ceiling wall. is there.

[0007]

SUMMARY OF THE INVENTION The present invention has been devised in view of the technical problem of the conventional anchor, and the invention according to claim 1 is to be inserted and fixed in a fixing hole of a building material. In a cylindrical anchor socket, a shoulder bolt for supporting a predetermined angle member is screwed into an anchor fitting for fixing the angle member to a building material, wherein an axial direction is provided between the shoulder bolt and at least the angle member. A vibration isolator that compresses and deforms is interposed, and the vibration isolator is configured as a vibration isolator formed by integrally connecting an elastic body between upper and lower flat washers, and inside the elastic body, Sealed sky
It is characterized by forming an air chamber .

Therefore, according to the present invention, since mutual vibration transmission from, for example, a ceiling wall or from equipment is reliably blocked by the vibration isolator, accidental dropping or vibration of the anchor socket from the fixing hole is prevented. Generation of noise can be effectively prevented. Moreover, the rigidity of the vibration isolating member is increased by the upper and lower flat washers, so that the durability can be improved, and the effective vibration isolating property can be obtained by the elastic body therebetween. Also elastic
By forming a closed air chamber in the body,
Because the body functions as an air cushion, the angle
Effective vibration isolation according to the object supported by the material
it can.

According to a second aspect of the present invention, each of the vibration isolating members is
It is characterized by being coaxially combined .

According to a third aspect of the present invention, the anchor socket
The tip of a male screw-shaped push member that is screwed into the slot
Of the anchor socket in the fixing hole by pushing the insertion member.
Cone-shaped head that expands the tip through the vertical split
And the boundary between the tip of the pushing member and the head.
At the end of the torsion anchor socket
Due to the difference between the friction torque of the head and the inner peripheral surface
Cut the boundary with a torsional torque greater than a predetermined
A cutting groove is formed .

According to a fourth aspect of the present invention, the predetermined head
In position, the head is anchored by a pusher
Of the anchor socket when
Bending allowance means that bends and deforms according to the bending angle of the part
Is characterized in that form was.

[0012]

According to a sixth aspect of the present invention, when the head advances to a predetermined position of the head by a pushing member toward the distal end of the anchor socket, the head is bent in accordance with the bending angle of the distal end of the anchor socket. It is characterized in that bending allowance means for deforming is formed.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 to 5 show an embodiment of a vibration damping device for an anchor fitting according to the present invention, and a concrete hole which is a fixing hole formed in a ceiling wall C of concrete as a building material. 1, a cylindrical anchor socket 2 inserted and fixed in the anchor socket 1, an anchor bolt 3 which is a pushing member screwed into the inside from one end opening of the anchor socket 2, and after removing the anchor bolt 3 from the anchor socket 2 ,
Angle material 21 for holding the equipment is anchor socket 2
And a vibration isolator 30 interposed between the anchor socket 2, the angle member 21, and the shoulder bolt 23.

As shown in FIGS. 6A and 6B, the concrete hole 1 is preliminarily drilled from below into the ceiling wall C. For example, a relatively large gravel C kneaded into the concrete at the time of the drilling is used. _1, the C ₂ pushing direction T of the drill D is ready will bent substantially Ku-shape from the axial direction X, which is thereby concrete holes 1 itself is bent substantially Ku-shape.

As shown in FIGS. 5A and 5B, the anchor socket 2 has a cylindrical body 4 having openings 4a and 4b at both ends and having a predetermined length.
A plurality of torsional ribs 8 are formed on the outer peripheral surface 5a of the one end portion 5 substantially along the axial direction, and the inner peripheral surface of the central portion 7 of the cylindrical main body 4 is formed on the inner peripheral surface of the one end portion 5. A female screw portion 9 extending up to is formed. The peripheral wall of the one end 5 near the opening 4a has an outer peripheral surface formed in a tapered shape having a large diameter toward the bottom in the figure, and a lower end surface 5b having a maximum diameter thereof is formed in an annular shape.

On the other hand, the other end 6 of the cylindrical main body 4 is
The outer diameter of a is substantially uniform from the outer peripheral surface 7a of the central portion 7 to the distal end edge on the opening 4b side, and the inner peripheral surface 6b is similarly formed from the inner peripheral surface of the central portion 7 to the opening 4a. Hole 4
The tapered shape is gradually reduced to c. Further, a helical rib 10 in the same direction as the torsion rib 8 is formed integrally at a substantially central position on the outer peripheral surface 6a of the other end.
A large-diameter annular rib 11 is integrally formed at a distal end position.

Further, on the peripheral wall of the other end portion 6, the other end portion 6
A slit 13 is formed as four vertically-divided grooves which allow deformation in the direction of diameter expansion or diameter reduction. It is extended to the vicinity.

The twisted rib 8 at the one end 5 is
The spiral rib 10 and the annular rib 11 at the other end 6 are formed in a substantially trapezoidal cross section with the lower end side notched in the figure, and have a claw shape. I have. Further, the outer diameter of the annular rib 11 at the tip is set larger than the inner diameter of the concrete hole 1 and the outer diameter of the spiral rib 10.

As shown in FIG. 4, the anchor bolt 3 has a hexagonal head portion 14 and a shaft portion 15 integrally formed at the center of one end surface 14a of the head portion 14. The head 16 is provided integrally.

The shaft portion 15 has a predetermined length which is completely screwed into the anchor socket 2, and has a male screw portion 17 which is screwed with the female screw portion 9 of the anchor socket 2 over the entire outer peripheral surface except the tip portion 15a. Are formed.

The head 16 has a bullet shape, a cylindrical base end portion 16c having substantially the same diameter as the distal end portion 15a of the shaft portion 15, and a distal end side formed into a small diameter shaft shape. The overall length in the axial direction is set to a length that allows the distal end portion 16a to protrude from the other end opening 4b when inserted into the anchor socket 2 together with the length of the shaft portion 15 and the outer peripheral surface. 16b is a flat surface. The distal end portion 16a of the head 16 has an outer peripheral surface 16b formed as a tapered surface having a gradually decreasing diameter toward the distal end edge side, and has an anchor socket 2 when inserted into a central position in the axial direction. An annular locking claw 18 that locks to the end opening edge 4c and restricts twisting into the inside of the anchor socket 2 is integrally formed.

Further, at a predetermined position on the outer peripheral surface of the head 16,
A bend allowance groove 22 is formed as a bend allowance means for allowing the head 16 to bend freely into a U-shape. That is, the bending allowance groove 22 is formed in an annular notch at a substantially central position in the longitudinal direction of the head 16 and has a substantially V-shaped cross section. Is set to be larger than the inner diameter portion 20a. Further, in the bending allowable groove 22, the inclination angle of the tapered surface 22b on the base end portion 16c side is set to be larger than the inclination angle of the opposing tapered surface 22c, so that the distal end portion 16a side is more easily bent. Have been.

Further, an annular cutting groove 20 is formed in a boundary portion 19 between the tip portion 15a of the shaft portion 15 and the head 16. When the head 16 is inserted into the anchor socket 2 and the anchor bolt 3 is tightened through the shaft portion 16 and the male and female screw portions 9 and 17 of the one end portion 5, the cutting groove 20 is used for the anchor bolt 3. 3 and the outer peripheral surface 16b of the head 16 with respect to the inner peripheral surface 6b of the other end 6.
The depth is set to a depth that can be cut by a predetermined or more torsional torque generated at the boundary portion 19 due to a torque difference between the sliding friction torque and the sliding friction torque.

The angle member 21 is a holding member provided below the ceiling wall for fixing and holding devices such as an air conditioner and a ventilation fan, and has a cross section as shown in FIGS. It is formed in a substantially L-shape, and a bolt insertion hole 21b is formed at a predetermined position in the longitudinal direction of the upper side portion 21a.

As the shoulder bolt 23, the anchor bolt 3 can be used as it is. In this case, a normal hexagonal bolt separate from the anchor bolt 3 is used, and a projection is formed on the inner end face of the head 23a. 23a, and a male screw 2 is provided on the outer peripheral surface of the shaft portion on the tip portion 23b side.
3c is formed. Also, this shoulder bolt 2
Reference numeral 3 denotes a male screw 23c to which a shoulder nut 34 for holding the vibration isolator 30 together with the head 23a is screwed, and a tip 23b is screwed to the female screw 9 of the anchor socket 2. It is supposed to.

As shown in FIGS. 1 to 3, the vibration isolator 30 in this embodiment is constituted by three annular vibration isolator members 31, 32, and 33, as shown in FIGS. And first and second vibration isolating members 31, 32 shown thereon
Are the upper and lower two flat washers 31a, 31b, 32, respectively.
a, 32b and elastic bodies 31c, 32c made of a rubber material which are integrally connected in a sandwich state between the flat washers 31a, b, 32a, b and are compressed and deformed in the axial direction. Bolt insertion hole 3 in the center axis direction of
1d and 32d are formed through. Further, the third vibration isolating member 33 at the uppermost stage in the figure includes two upper and lower flat washers 33.
a and 33b and a rubber elastic body 33c integrally connected between the flat washers 33a and 33b. Further, the bolt insertion hole 3 is formed in the inner axial direction of the elastic body 33c.
3d is formed to penetrate, and a closed annular air chamber 33e is formed inside the elastic body 33c.

Hereinafter, the operation of the present embodiment will be described. First, a procedure for fixing the anchor socket 2 to the concrete hole 1 will be described with reference to FIGS. That is, first, the anchor socket 2 is inserted from the other end 6 into the concrete hole 1 while the one end 5 is lightly hit with a hammer or the like from below to perform positioning. Thereafter, when the one end 5 is further hit with a hammer or the like and pushed into the concrete hole 1, the anchor socket 2 is press-fitted while turning by the guide action of the torsion rib 8 and the spiral rib 10, as shown in FIG. At the same time, an inward pressing force is applied to the large-diameter annular rib 12 at the other end 6 on the inner peripheral surface 1 a of the concrete hole 1, and the other end 6 is contracted inward through the plurality of slits 13. It is pushed in while deforming in diameter. In particular, the amount of diameter reduction deformation of the distal end side is increased by the annular rib 12, and conversely, a large reaction force is generated in the diameter expansion direction, and the inner peripheral surface 1a of the concrete hole 1 is formed.
Therefore, it is possible to firmly hold the entire anchor socket 2 with a relatively strong force.

Further, the torsion rib 8 and the helical rib 10 bite into the inner peripheral surface 1a of the concrete hole 1 to increase the frictional resistance, so that the anchor socket 2 can be more firmly and surely temporarily fixed. . Therefore, it is not necessary to hold the anchor socket 2 by hand particularly in the upward operation, and the subsequent operation becomes extremely easy. Further, when the anchor socket 2 is pushed in the concrete hole 1, the anchor socket 2 enters while being bent in a substantially rectangular shape according to the bent angle of the rectangular shape of the concrete hole 1.

When the anchor socket 2 is press-fitted to the end as shown in FIG. 7, a strong temporary force is generated by the reaction force in the radially expanding direction by the annular rib 12 with the other end 6 bent in a V shape. The stopped state is maintained, and the lower end face 5b having the maximum diameter near the one end opening 4a is formed in the concrete hole 1.
And presses against the opening edge 1b of the anchor socket 2 to function as a stopper.
Further, the opening edge 1b of the concrete hole 1 is closed in a water-tight manner, and a sealing function is exhibited to prevent water from falling from the concrete hole 1, and the appearance can be improved.

Further, since the torsion rib 8 is formed in a substantially triangular cross section, the inner peripheral surface 1 of the concrete hole 1 is formed.
a and the spiral rib 10
Since the annular rib 11 and the annular rib 11 are formed in a claw shape, a strong locking force with respect to the inner peripheral surface 1a after press-fitting is obtained, and the above-described temporary fixing force can be further promoted.

Next, the anchor bolt 3 is screwed into the anchor socket 2 which has been temporarily temporarily fixed. First, the distal end 16a of the head 16 is connected to one end 5a.
Male screw portion 1 of shaft portion 15 while being inserted through opening 4a of
7 is screwed into the female thread 9 on the inner peripheral surface of the one end 5, and then
The head 14 is turned by a tool such as a spanner and screwed in.
Then, as shown in FIG. 8, the outer peripheral surface 16 b of the head 16 rotating synchronously with the shaft portion 15 gradually and strongly presses against the inner peripheral surface 6 b of the other end portion 6 in the reduced diameter state of the anchor socket 2.
Then, due to the torque difference between the sliding friction torque between the anchor bolt 3 and the inner peripheral surface 6b of the other end of the anchor socket 2 due to the turning of the head 16 and the tightening rotation torque of the anchor bolt 3, a predetermined or more torsional torque is applied to the boundary 19. When this occurs, the boundary 19 is twisted off by the cutting groove 20. In other words, the shaft portion 15 is in the middle of the screwing of the anchor bolt 3.
And the head 16 is divided.

Thereafter, when the anchor bolt 3 is further screwed in, the head 16 pushes the inside of the other end portion 6 in a straight line without being rotated thereafter by the pressing force of the shaft portion 15. At the same time as the distal end portion 16a projects from the opening 4b at the other end portion 6 as shown in FIG. 9, the locking claw 1 is caused by a strong reaction force in the diameter-reducing direction of the large-diameter annular rib 11 which has been expanded.
8 firmly engages with the hole edge 4c of the opening 4b. At this time, since the other end 6 is pushed open by the head 16 in the radially expanding direction through the slit 13, the annular ribs 11 and the annular ribs 10 bite into the inner peripheral surface 1a of the concrete hole 1 more strongly, and the anchor socket 2 can be firmly held on the inner peripheral surface 1a.

When the head 16 pushes the inside of the other end 6 in a linear state, the head 16
Is caused by the fact that the outer peripheral surface 16b of the distal end portion 16a hits the bent inner surface of the other end portion 6 and a biased load is generated from this inner surface due to sliding pressure contact, and a force is exerted to push and bend in the opposite direction. It gradually bends in a substantially U-shape following the bending angle of the other end 6 around the permissible groove 30. For this reason, an increase in the sliding frictional resistance between the outer peripheral surface 16b of the head 16 and the inner peripheral surface 6b of the other end 6 is sufficiently suppressed. Therefore, a smooth pushing property of the head 16 can be obtained,
Since an increase in the load applied to the internal and external threads 9, 17 is suppressed, breakage of each thread is prevented.

Next, as shown in FIG. 10, when the anchor bolt 3 is rotated in the reverse direction and pulled out from the anchor socket 2, the shaft 16 and the separated head 16 are separated by the locking force of the locking claw 18. In addition to remaining in the end portion 6, even if a strong reaction force in the diameter reducing direction of the other end portion 6 by the annular rib 11 acts on the end portion 6, it is surely prevented from coming out of the anchor socket 2.

Next, a procedure for fixing the angle member 21 to the anchor socket 2 using the shoulder bolt 23 will be described. That is, first, as shown in FIG.
The shoulder bolts 23 are inserted into the respective bolt insertion holes 21d, 31d to 33d in a state where the respective vibration isolating members 31, 32, and 33 are arranged above and below the bolt insertion holes 21b of the angle member 21, and thereafter, as shown in FIG. Then, if the shoulder nut 34 is screwed into the distal end portion 23b and the shoulder nut 34 is screwed in, each of the vibration isolating members 31 to 33 can be held between the head 23a and the shoulder nut 34 in a sandwiched state. . After that, if the shoulder bolt 23 is screwed into the anchor socket 2 with the internal and external threads, the angle material 2
1 can be elastically and reliably attached to the ceiling wall C or the like via the anchor socket 2.

As described above, according to this embodiment, as described above, it is not necessary to apply a hit to expand the distal end portion of the anchor socket, so that the wall is not damaged or damaged by the hitting force. Generation can be prevented, and generation of a blow sound can also be prevented.

Further, since it can be composed of two parts, the anchor socket 2 and the anchor bolt 3, the number of parts can be reduced, the manufacturing work can be improved, and the cost can be reduced.

Moreover, since the shaft portion 15 of the anchor bolt 3 and the head 16 are separated by the torsion torque during the pushing, the head 16 can be pushed straight without rotating, so that the head 16 can be pushed straight. The sliding frictional resistance between the outer peripheral surface 16b of the head 16 and the inner peripheral surface 6b of the other end 6 becomes sufficiently small. As a result, the tightening operation force of the anchor bolt 3 can be reduced, and the entire mounting work of the anchor socket 2 and the like can be easily performed, and the mounting work efficiency can be greatly improved.

Further, even if the other end 6 of the anchor socket 2 is bent in a substantially U-shape as described above, the head 16 pushing the inside of the other end 6 is also bent into a bendable groove. 2
2 and flexibly deforms following the bending angle of the bending portion. Therefore, it is possible to sufficiently suppress an increase in sliding friction resistance between the bent portion inner peripheral surface 6b of the other end portion 6 and the distal end portion 16a outer peripheral surface 16b of the head 16. Therefore, in combination with the straightness of the head 16, smoother pushability of the head 16 and breakage of the threads of the male and female screws 9 and 17 can be prevented.

Further, since the outer diameter of the annular rib 11 at the other end 6 is set to be larger than the inner diameter of the concrete hole 1, the reaction force of the other end 6 in the radially expanding direction when pushed into the concrete hole 1 is large. Become. As a result, a strong and reliable temporary fixing state with respect to the inner peripheral surface 1a of the concrete hole 1 of the anchor socket 2 is obtained. Therefore, the subsequent screwing work of the anchor bolt 3 becomes easy, and
Safety is improved.

Further, since the plurality of slits 13 of the anchor socket 2 extend almost to the vicinity of the central portion 7, when the anchor bolt 3 is screwed into the anchor socket 2 as described above, the pushing force of the head 16 causes the anchor socket 3 to be pushed. In addition to the other end 6 of FIG.
The outer peripheral surfaces 6a and 7a and the lower end surface 5b are pressed against a. Therefore, the anchor socket 2 completely buried in the concrete hole 1 has the other end 6, the center 7 and the one end 5.
Are pressed against the inner circumferential surface 1a of the concrete hole 1 to obtain a three-point pressed state, so that the opposing force against the external force in the pulling-out direction and the horizontal direction is increased, and the holding force of the anchor socket 2 is further increased.

Therefore, it is possible to reliably prevent damage to the inner peripheral surface 1a of the concrete hole on the other end 6 side due to the swing of the anchor socket 2 which is likely to occur in the case of two-point pressure contact between the other end 6 and the one end 5. Inadvertent detachment of the anchor socket 2 due to an increase in the diameter of the hole 1 due to such damage can be prevented.

The torsion ribs 8 bite into the inner peripheral surface 1a of the concrete hole 1 to impart a strong holding force to the anchor socket 2 even in the rotating direction, so that the anchor bolt 3 is screwed into the anchor socket 2. The swiveling of the anchor socket 2 when it is inserted can be reliably restricted. For this reason, the work of screwing in the anchor bolt 3 becomes easy.

In addition, as described above, the anchor socket 2
Since the force against the external force in the pulling-out direction and the horizontal direction increases, the mounting strength of the anchors mounted on the same building material becomes uniform and constant. Therefore, the reliability of attachment by the anchor is improved.

Further, since the outer peripheral surface of the head 16 is a bullet-shaped tapered surface, the load stress distribution on the inner peripheral surface 6b of the other end portion 6 of the anchor socket becomes equal in the circumferential direction, and the durability against vibration is improved. I do.

After the anchor socket 2 is fixed to the concrete hole 1, the angle member 21 is elastically supported via the vibration isolating members 31 to 33 as described above. Even if a large vibration is generated on the wall c, this vibration is effectively absorbed by the vibration isolating members 31 to 33 and the transmission of the vibration to the angle member 21 is cut off. Therefore, failures and vibration noise due to amplified vibration of devices such as an air conditioner held by the angle member 21 are sufficiently suppressed. In addition, since the vibration generated by the devices and the transmission of the vibration to the ceiling wall c by the vibration isolating members 31 to 33 are effectively suppressed, the generation of such vibration noise and the like can be prevented.

In particular, since the third vibration isolating member 33 functions as an air cushion, it becomes possible to effectively absorb the natural vibration, so that the vibration isolating performance is further improved.

Further, the respective vibration isolating members 31 to 33 can be freely combined and selected according to the object to be supported by the angle member 21 and the size thereof. If the hardness of the rubber is appropriately changed in accordance with the vibration range such as high-range vibration, middle-range vibration and low-range vibration, the vibration-proof performance is further improved.

FIGS. 11A and 11B show another example of the anchor socket 2 provided in the present embodiment, in which the other end 6 is formed in a tapered shape, and the inner peripheral surface 6b is also tapered. It is formed in a shape. In addition, each slit 13
Are set to have a uniform width in the vertical direction in the figure. The outer diameter of the annular rib 11 at the upper end is set to be substantially the same as the outer diameter of the tubular main body 4.

Accordingly, although it has basically the same function and effect as the anchor socket 2 described above, the insertability into the concrete hole 1 is improved because the other end 6 is formed in a tapered shape. In addition, the inner peripheral surface 6b of the other end 6 is formed in a tapered shape, so that the diameter of the other end 6 in the radially expanding direction accompanying the pushing of the head 16 is increased in conjunction with the increase in the diameter of the annular rib 11. The force is further increased, and a stronger holding force on the inner peripheral surface 1a of the concrete hole 1 of the anchor socket 2 is obtained. .

FIG. 12 shows another example of the anchor bolt 3 used in the present embodiment.
Is separated from the boundary and formed separately from the beginning. Other than the above-mentioned anchor bolt 3, the bending allowable groove 22 is used.
And so on.

Therefore, in this case, when screwing the anchor bolt 3 into the anchor socket 2, it is necessary to insert the head 16 in advance from the one end opening 4a in advance, but once screwing is started. Since the head 16 is pushed straight forward from the beginning, the outer peripheral surface 16b and the inner peripheral surface 6b
The sliding frictional resistance with b is reduced, and the pushability of the head 16 is further improved. Further, the sliding frictional resistance can be further reduced in combination with the bending flexibility of the bending allowable groove 22.

The present invention is not limited to the configuration of the above-described embodiment. For example, the number of combinations and the structure of the vibration isolating members 31 to 33 can be freely changed depending on the support object of the angle member 21. Also, the hardness of the elastic body can be arbitrarily changed according to the vibration frequency of the supporting object.

Further, the shape of the head 16 and the structure of the pushing member can be further changed. further,
The configuration of the bending permitting means can also be changed as appropriate depending on the structure and size of the anchor socket to which it is applied.

Further, the anchor bolt 2 can be used as a shoulder bolt as it is.

[0057]

As is apparent from the above description, claim 1
According to the described invention, for example, mutual vibration from a ceiling wall or from equipment is reliably shut off by a vibration isolator, so that accidental detachment of an anchor socket from a fixing hole and generation of vibration noise are effective. Can be prevented. Moreover, the rigidity of the vibration isolating member is increased by the upper and lower flat washers, so that the durability can be improved, and the effective vibration isolating property can be obtained by the elastic body therebetween. Formed closed air chamber in elastic body
Thereby, the elastic body functions as an air cushion.
Effective depending on the object supported by the angle material
Can be anti-vibration.

According to the second aspect of the present invention, each vibration isolating member
The combination can be freely changed according to the support object
By doing so, the anti-vibration performance can be more effectively exhibited.
Can be.

According to the third aspect of the present invention, the anchor
Press the shaft of the switch and the head into
And then straighten without rotating the head
Since it becomes possible to push in a linear shape,
Sufficiently low sliding friction resistance between the peripheral surface and the inner peripheral surface at the other end
Become. As a result, it is possible to reduce the tightening operation force of the anchor bolt.
And easy installation work such as anchor socket
Thus, the efficiency of the mounting operation can be greatly improved.

According to the fourth aspect of the invention, the position of the head is
In the fixed position according to the bending angle of the other end of the anchor socket
Since bending allowance means for bending the head is provided,
Of the head press-fit into the anchor socket
To increase the sliding frictional resistance between the surface and the inner peripheral surface of the anchor socket.
It becomes possible to suppress. As a result, the anchor socket
As well as the smooth pushability of the head in the
Large impact when pushing the pushing member with a hammer
The generation of force and impact noise can be prevented.

[0061]

According to the sixth aspect of the present invention, since the bending permission means for bending and deforming the head according to the bending angle of the other end of the anchor socket is provided at a predetermined position of the head, the anchor socket by the pushing member is provided. It is possible to suppress an increase in sliding frictional resistance between the outer peripheral surface of the head press-fitted into the inner peripheral surface and the inner peripheral surface of the anchor socket. As a result, a smooth pushability of the head in the anchor socket is obtained,
It is possible to prevent generation of a large impact force and an impact sound when the pushing member is hit with a hammer or the like.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view illustrating a shoulder bolt, a vibration isolator, and an angle member provided in an embodiment of the present invention.

FIG. 2 is an operation explanatory view of the embodiment.

FIG. 3 is an operation explanatory view of the embodiment.

FIG. 4 is a front view showing an anchor bolt and a head provided in the embodiment of the present invention.

FIG. 5A is a front view showing the anchor socket of the embodiment, and FIG. 5B is a longitudinal sectional view of the anchor socket.

FIG. 6A is a sectional view of a ceiling wall showing a state where a concrete hole is drilled, and FIG. 6B is a sectional view showing the concrete hole.

FIG. 7 is an operation explanatory view when fixing the anchor socket.

FIG. 8 is an operation explanatory view when fixing the anchor socket.

FIG. 9 is an explanatory view of an operation when fixing the anchor socket.

FIG. 10 is an explanatory view of an operation when fixing the anchor socket.

FIG. 11A is a front view showing another example of the anchor socket;
B is the same longitudinal sectional view.

FIG. 12 is a front view showing another example of the anchor bolt.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Concrete hole (fixing hole) 2 ... Anchor socket 3 ... Anchor bolt (push member) 5 ... One end part 6 ... Other end part 6a ... Outer peripheral surface 6b ... Inner peripheral surface 15 ... Shaft part 16 ... Head 17 ... Male screw part DESCRIPTION OF SYMBOLS 18 ... Locking claw 19 ... Boundary part 20 ... Cutting groove 21 ... Angle material 22 ... Bending allowable groove 23 ... Shoulder bolt 30 ... Vibration isolator 31, 32, 33 ... First to third vibration isolating members 31a, b , 32a, b, 33a, b ... flat washers 31c, 32c, 33c ... elastic body 33 e ... air chamber

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 1/41 502 E04B 1/98 F16B 13/10

Claims (4)

(57) [Claims] 1. An anchor fitting for screwing a shoulder bolt for supporting a predetermined angle material to a cylindrical anchor socket inserted and fixed in a fixing hole of a building material to fix the angle material to the building material, Between the shoulder bolt and at least the angle material, a vibration isolator that compresses and deforms in the axial direction is interposed,
The vibration isolator is configured as a vibration isolator formed by integrally connecting an elastic body between upper and lower flat washers, and is provided inside the elastic body.
A vibration isolator for an anchor fitting , wherein a sealed air chamber is formed . 2. The vibration isolating members are coaxially combined.
The vibration damping device for an anchor fitting according to claim 1 , wherein: 3. A male screw which is screwed into said anchor socket.
The pushing member is fixed to the tip of the pushing member by pushing the pushing member.
Insert the distal end of the anchor socket through the vertically
And a cone-shaped head to be expanded
Tighten the pushing member at the boundary between the tip of the pushing member and the head.
Head to the inner peripheral surface of the tip of the torch anchor socket
Over the specified torsion caused by the torque difference from the friction torque of the
A cutting groove for cutting the boundary portion was formed by luk.
An anti-vibration device for an anchor fitting according to claim 1 or 2 , wherein: 4. The head is pushed into a predetermined position of the head.
Advancing toward the tip of anchor socket
Depending on the bending angle of the tip of the anchor socket.
Characterized in that a bending allowance means for bending deformation is formed.
An anti-vibration device for an anchor fitting according to any one of claims 1 to 3 .