CN110081125B

CN110081125B - Suspension type vibration isolator

Info

Publication number: CN110081125B
Application number: CN201910327592.0A
Authority: CN
Inventors: 室井仁志
Original assignee: Tozen Corp
Current assignee: Tozen Corp
Priority date: 2015-08-26
Filing date: 2016-06-29
Publication date: 2021-06-15
Anticipated expiration: 2036-06-29
Also published as: CN110081124A; CN110173537B; PH12016000211B1; PH12016000211A1; JP2017044261A; CN110159688B; CN110081125A; MY183346A; SG10201800521RA; SG10201604397YA; CN106481730A; CN110159688A; CN110173537A; JP6181120B2; CN106481730B

Abstract

A suspension type vibration isolator is provided which can mount a nut in a stable state without a stepped portion. In the suspension type vibration isolator, the vibration isolator body has a first engagement groove formed by a cutout in an upper side portion, the first engagement groove being capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion is inserted into the first engagement groove. A hook-shaped locking tab is pivotally supported on the vibration isolator body on one side of the first engagement groove, a second engagement groove is formed in the locking tab by a cutout, the second engagement groove is engageable with the shaft portion of the suspension stud inserted into the first engagement groove from the outside, the vibration isolator includes a mechanism that prevents the locking tab from being disengaged from the vibration isolator body in a state where the locking tab is engaged with the shaft portion of the suspension stud inserted into the first engagement groove, and the locking tab and the upper side portion of the vibration isolator body are clamped, fastened, and fixed to each other from above and below by a pair of nuts that are threadedly mounted on the shaft portion of the suspension stud.

Description

Suspension type vibration isolator

The application is a divisional application of Chinese patent application with the filing date of 2016, 6 and 29, named as a suspended vibration isolator and the filing number of 201610497951.3.

Technical Field

The present invention relates to a suspension type vibration isolator, and more particularly, to a suspension type vibration isolator which is installed on a suspension stud for suspending a vibration device such as an air conditioner, a water supply and drainage pipe, a duct for supplying and exhausting air, etc. in an interposing manner so as to prevent the vibration of the vibration device from being propagated. The present invention provides a vibration isolator capable of being quickly and smoothly mounted on a suspension stud, which exhibits high safety by reliably preventing the vibration isolator from falling.

Background

The applicant of the present patent application previously proposed a suspended vibration isolator of the above type. This suspension type isolator includes: a vibration isolator body which has an upper side portion and a lower side portion and which is installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device that generates vibration is suspended, and which supports a load of the vibration device; a vibration isolating member which is provided between upper and lower side portions of the vibration isolator body and absorbs vibration of the vibration equipment; and two members, an upper member provided between the vibration insulating member and the vibration isolator body, and a lower member provided between the vibration insulating member and the suspension stud, thereby preventing propagation of vibration of the vibration equipment, wherein the vibration insulating member has a frustoconical outer shape (see patent document 1).

With the construction as described above, the suspension type vibration isolator itself can obtain an operation manner and advantageous effects that the vibration isolator can satisfy the needs for miniaturization and weight reduction, and contact between the vibration isolation member and the vibration isolator body can be prevented even when the insertion position and the vibration equipment mounting position are displaced from each other, so that the vibration isolator can exert a reliable vibration isolation effect. Therefore, the vibration isolator has been well evaluated over a range. However, the vibration isolator has many disadvantages such as that in mounting the vibration isolator body on the suspension stud, the mounting operation is rather difficult and time-consuming, so that the vibration isolator cannot be smoothly mounted.

That is, in the vibration isolator, when the vibration isolator body is mounted on the suspension stud, the lower end of the stud (upper suspension stud) suspended from the ceiling deck passes through a circular hole formed in the upper side portion of the vibration isolator body, the upper suspension stud protrudes from the lower end of the vibration isolation member after passing through the inside of the vibration isolation member mounted on the vibration isolator body, the lower nut is screw-mounted on the upper suspension stud from the lower end of the stud until the lower nut contacts a washer mounted on the lower end of an elastic member covering the vibration isolation member in an embedded manner, and the vibration isolator body is fixedly mounted on the upper suspension stud by fastening using the lower nut and the upper nut forming a pair.

However, regarding the mounting of the vibration isolator in which the lower end of the suspension stud is passed through the circular hole formed in the vibration isolator body while lifting up the above-described vibration equipment, in this mounting, it is necessary to perform the mounting at two to four positions which are important parts of the vibration equipment. In this case, a plurality of installers must lift and support the vibration apparatus, which is a heavy object, until the lower nut is threadedly mounted on the suspension stud. Therefore, a drawback occurs in that the mounting operation becomes troublesome and time-consuming, resulting in deterioration of the operability of the mounting operation. In addition, such vibration isolator mounting requires a predetermined amount of space, whereby mounting of the vibration isolator in a narrow space becomes a problem.

Reference list

Patent document

Patent document 1: JP 2012-

Disclosure of Invention

Technical problem

The present invention has been made to overcome the above-mentioned conventional drawbacks, and an object of the present invention is to provide a suspension isolator which is capable of rapidly and smoothly mounting an isolator body on a suspension stud and which exhibits high safety by reliably preventing the isolator from falling.

Solution to the problem

To achieve the object, a first aspect of the invention is a suspension isolator including a isolator body having an upper side portion and a lower side portion, the isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibration, and the isolator body supporting a load of the vibration device, wherein the isolator body has a first engaging groove formed by a cutout in the upper side portion, and the first engaging groove is capable of being fitted on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engaging groove, and the isolator has a locking tab in which a second engaging groove substantially equivalent to the first engaging groove formed in the isolator body is formed by a cutout A groove, and the locking tab is fittable over the shaft portion of the suspension stud in a state where the shaft portion of the suspension stud is inserted into the locking tab, and the locking tab and the upper side portion of the isolator body are clamped, fastened, and fixed to each other from above and below by a pair of nuts that are screw-mounted on the shaft portion of the suspension stud in a state where the locking tab is fitted over the shaft portion of the suspension stud inserted into the first engagement groove.

With regard to the second aspect of the invention, locking portions that are lockable with opening-side edge portions of the upper side portion of the vibration isolator body are formed on both distal end edge portions of the locking tabs on the opening side of the second engagement groove.

With regard to a third aspect of the invention, in the suspended vibration isolator described in the second aspect, a recessed portion, in which the lock portion is fittable, is formed by a cutout on the opening-side edge portion of the upper side portion of the isolator body that is lockable with the lock portion of the lock tab.

With regard to a fourth aspect of the invention, in the suspended vibration isolator described in the first aspect, the locking tab has elongated grooves formed by cutouts along both sides of the second engagement groove, the elongated grooves are configured to slidably engage with projections formed on the upper side portion of the isolator body, and the second engagement groove formed in the locking tab is capable of fitting on the shaft portion of the suspension stud inserted in the first engagement groove in a state where the shaft portion of the suspension stud is inserted in the second engagement groove.

A fifth aspect of the invention is a suspension isolator including an isolator body having an upper side portion and a lower side portion, the isolator body being installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device is suspended, the vibration device generating vibration, and the isolator body supporting a load of the vibration device, wherein the isolator body has a first engagement groove formed by a cutout in the upper side portion, and the first engagement groove is capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engagement groove, and pivotally supports a hook-shaped locking tab on the isolator body on one side of the first engagement groove, in the hook-shaped locking tab, a second engagement groove is formed by a cutout, the second engagement groove being engageable from outside with the shaft portion of the suspension stud inserted into the first engagement groove, the vibration isolator includes a mechanism that prevents the locking tab from disengaging from the vibration isolator body in a state where the locking tab is engaged with the shaft portion of the suspension stud inserted into the first engagement groove, and the locking tab and the upper side portion of the vibration isolator body are clamped, fastened, and fixed to each other from above and below by a pair of nuts that are screw-mounted on the shaft portion of the suspension stud.

With regard to the sixth aspect of the invention, a projection is formed on the upper side portion of the vibration isolator body, the projection forming a nut receiver.

A seventh aspect of the invention is a suspension type vibration isolator including a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device that generates vibration and supports a load of the vibration device is suspended, the vibration isolator body having an engaging groove formed by a cutout in the upper side portion and capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the engaging groove, and a locking portion formed on an opening side edge portion of the upper side portion of the vibration isolator body disposed on an opening side of the engaging groove, the locking portion is formed by being cut and stood downward, and the locking portion forms a nut receiving portion, and the upper side portion of the isolator body is clamped, fastened, and fixed from above and below by an upper nut and a lower nut in a state where the lower nut of a pair of nuts threadedly mounted on the shaft portion of the suspension stud is locked to the locking portion.

An eighth aspect of the invention is a suspension type vibration isolator including a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device that generates vibration and supports a load of the vibration device is suspended, the vibration isolator body having an engaging groove formed by a cutout in the upper side portion, and being capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the engaging groove, and forming a circular hole having a slightly larger diameter in a deep side of the engaging groove, and in a state where the shaft portion of the suspension stud is inserted into and engaged with the circular hole, a stepped locking washer is mounted on the shaft portion of the suspension stud such that the shaft portion passes through the stepped locking washer, and the upper side portion of the isolator body is clamped, fastened and fixed from above and below by the pair of nuts while interposing the washer between the upper side portion and the pair of nuts threadedly mounted on the shaft portion of the suspension stud, respectively.

With regard to a ninth aspect of the present invention, in the suspended vibration isolator described in any one of the first to eighth aspects, the isolator body is formed of a hollow rectangular frame body having the upper side portion, the lower side portion, and a pair of left and right side portions.

A tenth aspect of the present invention is a suspension type vibration isolator including a vibration isolator body formed of a hollow rectangular frame body having an upper side portion, a lower side portion, and a pair of left and right side portions, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibrations, and the vibration isolator body supporting a load of the vibration device, wherein the vibration isolator body has a first engaging groove formed in the upper side portion by a cutout, and the first engaging groove is capable of being fitted on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engaging groove, and a U-shaped engaging frame body is formed of two side portions and a connecting portion connecting the two side portions to each other, mounting a U-shaped coupling frame body on upper portions of both side portions of the vibration isolator body in a state where base ends of the U-shaped coupling frame body are pivotally supported so as to enable the coupling frame body to swing to positions above and on lateral sides of the upper side portion and to enable the coupling frame body to slide upward and downward on both side portions of the vibration isolator body, and the vibration isolator includes a mechanism that prevents the coupling frame body from being disengaged from the vibration isolator body in a state where the coupling frame body is coupled with the vibration isolator body by swinging upward and by sliding downward, in the connection portion of the coupling frame body, a second coupling groove substantially equivalent to the first coupling groove is formed by a cutout at a position corresponding to the first coupling groove, and the connection portion of the coupling frame body and the upper side portion of the vibration isolator body are formed by a pair of nuts Clamped, fastened and fixed to each other from above and below, the pair of nuts being screw-mounted on the shaft portion of the suspension stud.

An eleventh aspect of the invention is a suspended vibration isolator including a vibration isolator body formed of a U-shaped frame body having either one of a left side portion or a right side portion, an upper side portion, and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibration, and the vibration isolator body supporting a load of the vibration device, wherein the vibration isolator body includes a vibration isolator body, the vibration isolator body being mounted on a middle portion of the suspension stud in a manner of interposing therebetween, and the vibration device generates vibration, and the vibration isolator body supports the

The vibration isolator body has an engaging groove formed by a cutout in the upper side portion, and the engaging groove is fittable on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the engaging groove, and a locking portion bent downward is formed on an edge portion of the upper side portion of the vibration isolator body provided on an opening side of the engaging groove, and

the upper side portion of the vibration isolator body is clamped, fastened, and fixed from above and below by a pair of nuts that are screw-mounted on the shaft portion of the suspension stud in a state where the shaft portion of the suspension stud is inserted into the engagement groove.

With regard to a twelfth aspect of the invention, in the suspended vibration isolator described in the eleventh aspect, wherein one or more ribs are formed along a longitudinal direction of the side portion of the isolator body.

With regard to a thirteenth aspect of the invention, in the suspended vibration isolator described in any one of the first to twelfth aspects, a protrusion that prevents rotation of the nut is formed on a back surface of the upper side portion of the isolator body.

Advantageous effects of the invention

The present invention has the above configuration. According to the invention described in the first to fourth aspects, in a suspended vibration isolator including a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device that generates vibration is suspended, and which supports a load of the vibration device, the vibration isolator body has a first engagement groove formed by a cutout in the upper side portion, and the first engagement groove is capable of being fitted on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engagement groove, and the vibration isolator has a lock tab in which, a second engagement groove substantially equivalent to the first engagement groove formed in the vibration isolator body is formed by a cutout, and the lock tab is fittable over the shaft portion of the suspension stud in a state where the shaft portion of the suspension stud is inserted into the lock tab, and the lock tab and the upper side portion of the vibration isolator body are clamped, fastened and fixed to each other from above and below by a pair of nuts that are screw-fitted on the shaft portion of the suspension stud in a state where the lock tab is fitted over the shaft portion of the suspension stud inserted into the first engagement groove. With this configuration, at the time of mounting the vibration isolator body on the suspension stud, the vibration isolator body can be mounted on the suspension stud only by inserting the shaft portion of the suspension stud from the horizontal direction into the first engaging groove formed in the upper side portion of the vibration isolator body and by inserting the shaft portion of the suspension stud from the same horizontal direction into the second engaging groove formed in the locking tab so as to engage the shaft portion with the second engaging groove, and thereafter by fixing the locking tab and the upper side portion of the vibration isolator body together from above and below by a pair of nuts mounted on the shaft portion.

Therefore, the mounting operation of the vibration isolator body can be performed extremely rapidly and smoothly as compared with the conventional mounting operation, and therefore, the mounting time can be shortened, and the mounting can be simplified and made easier. In addition, the mounting of the vibration isolator body can prevent the equipment from falling by suspending only the first engagement groove of the vibration isolator body to the lower nut screw-mounted on the shaft portion of the suspension stud, and therefore, the equipment can be reliably prevented from falling and safety is also considered. In addition, the place where the isolator body is installed is mainly the space in the ceiling. It is therefore necessary to carry and install the apparatus through a narrow space such as an inspection opening. However, this drawback can be overcome by the suspension isolator of the present invention. In addition, although at least two installers are required to conventionally install one set of equipment, the insulator body can be inserted from the horizontal direction, i.e., the insulator body can be slidably installed, and thus the insulator body can also be installed by one installer. In this way, the present invention can obtain excellent advantageous effects such as reduction in cost and reduction in the number of installers, and can further ensure the safety of the installers.

In the suspended vibration isolator having the above-described configuration, locking portions that can be locked with the opening-side edge portions of the upper side portion of the vibration isolator body may be formed on both distal end edge portions of the locking tabs on the opening side of the second engagement groove. With this configuration, the present invention can obtain an advantageous effect that the engagement state at the time of engagement of the lock tab becomes stable. In addition, in the suspended vibration isolator having the above-described configuration, a recess portion in which the lock portion can be fitted may be formed by a cutout on the opening-side edge portion of the upper side portion of the vibration isolator body that can be locked with the lock portion of the lock tab. With this configuration, the locking portion of the locking tab can be accommodated while the locking portion of the locking tab is prevented from protruding toward the opening side of the upper side portion of the isolator body. In addition, in the suspended vibration isolator having the above-described configuration, the locking tab may have elongated grooves formed by cutouts along both sides of the second engagement groove, the elongated grooves may be configured to be slidably engaged with protrusions formed on the upper side portion of the vibration isolator body, and the second engagement groove formed in the locking tab may be fitted over the shaft portion of the suspension stud inserted into the first engagement groove in a state where the shaft portion of the suspension stud is inserted into the second engagement groove. With this configuration, the locking tab can be held so that the locking tab is always attached to the upper side of the vibration isolator body.

According to the invention of the fifth aspect, in a suspension type vibration isolator including a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibration, and the vibration isolator body supporting a load of the vibration device, the vibration isolator body has a first engagement groove formed by a cutout in the upper side portion, and the first engagement groove is capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engagement groove, and pivotally supports a hook-shaped locking tab on the vibration isolator body on a side of the first engagement groove, in the hook-shaped locking tab, a second engagement groove is formed by a cutout, the second engagement groove being engageable from outside with the shaft portion of the suspension stud inserted into the first engagement groove, the vibration isolator includes a mechanism that prevents the locking tab from disengaging from the vibration isolator body in a state where the locking tab is engaged with the shaft portion of the suspension stud inserted into the first engagement groove, and the locking tab and the upper side portion of the vibration isolator body are clamped, fastened, and fixed to each other from above and below by a pair of nuts that are screw-mounted on the shaft portion of the suspension stud. With this configuration, also due to the provision of the hook-shaped locking tab, the present invention can expect advantageous effects substantially equivalent to those obtained by the locking tab according to the present invention as described in the fourth aspect. In the suspended vibration isolator having the above-described configuration, a protrusion is formed on the upper side portion of the vibration isolator body, the protrusion forming a nut receiver. With this configuration, the nut can be mounted in a stable state without the stepped portion.

According to the invention of the seventh aspect, in a suspension type vibration isolator including a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, from which a vibration device that generates vibration and supports a load of the vibration device is suspended, the vibration isolator body has an engaging groove that is formed by a cutout in the upper side portion and on which a shaft portion of the suspension stud is fittable from a horizontal direction in a state where the shaft portion is inserted into the engaging groove, and a locking portion is formed on an opening side edge portion of the upper side portion of the vibration isolator body that is provided on an opening side of the engaging groove, the locking portion is formed by being cut and stood downward, and the locking portion forms a nut receiving portion, and the upper side portion of the isolator body is clamped, fastened, and fixed from above and below by an upper nut and a lower nut in a state where the lower nut of a pair of nuts threadedly mounted on the shaft portion of the suspension stud is locked to the locking portion. With this configuration, the isolator body can be mounted without particularly requiring a member such as a lock tab.

According to the invention described in the eighth aspect, in a suspension type vibration isolator (which includes a vibration isolator body having an upper side portion and a lower side portion, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibration, and the vibration isolator body supporting a load of the vibration device), the vibration isolator body has an engaging groove formed by a cutout in the upper side portion, and the engaging groove is capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the engaging groove, and a circular hole having a slightly larger diameter is formed in a deep side of the engaging groove, and in a state where the shaft portion of the suspension stud is inserted into and engaged with the circular hole, a stepped locking washer is mounted on the shaft portion of the suspension stud such that the shaft portion passes through the stepped locking washer, and the upper side portion of the isolator body is clamped, fastened and fixed from above and below by the pair of nuts while interposing the washer between the upper side portion and the pair of nuts threadedly mounted on the shaft portion of the suspension stud, respectively. With this configuration, the vibration isolator body can be installed while preventing removal of the shaft portion by the lock washer. In the above configuration, the vibration isolator body may be formed of a hollow rectangular frame body having the upper side portion, the lower side portion, and a pair of left and right side portions.

According to the invention described in the tenth aspect, in a suspension type vibration isolator (which includes a vibration isolator body formed by a hollow rectangular frame body having an upper side portion, a lower side portion, and a pair of left and right side portions, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibrations, and the vibration isolator body supporting a load of the vibration device), the vibration isolator body has a first engaging groove formed by a cutout in the upper side portion, and the first engaging groove is capable of being fitted on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engaging groove, and a U-shaped engaging frame body is formed by two side portions and a connecting portion connecting the two side portions to each other, the U-shaped engaging frame body is mounted on upper portions of the two side portions of the vibration isolator body in a state where a base end of the U-shaped engaging frame body is pivotally supported so as to enable the engaging frame body to swing to positions above and on lateral sides of the upper side portion and to enable the engaging frame body to slide upward and downward on the two side portions of the vibration isolator body, and the vibration isolator includes a mechanism that prevents the engaging frame body from being disengaged from the vibration isolator body in a state where the engaging frame body is engaged with the vibration isolator body by swinging upward and by sliding downward, in the connecting portion of the engaging frame body, at a position corresponding to the first engaging groove, a second engaging groove substantially equivalent to the first engaging groove is formed by a cutout, and the connecting portion of the engaging frame body and the upper side portion of the vibration isolator body are clamped, fastened, and fixed to each other from above and below by a pair of nuts that are screw-fitted on the shaft portion of the suspension stud. With this configuration, the insulator body can be simply mounted through a series of operations consisting of the swinging and sliding of the joint frame body.

According to the invention of the eleventh aspect, in a suspended vibration isolator (which includes a vibration isolator body formed by a U-shaped frame body having either one of a left side portion or a right side portion, an upper side portion, a lower side portion, the vibration isolator body being mounted on a middle portion of a suspension stud in an intervening manner, a vibration device being suspended from the suspension stud, the vibration device generating vibration, and the vibration isolator body supporting a load of the vibration device), the vibration isolator body has an engaging groove formed by a cutout in the upper side portion, and the engaging groove is capable of fitting on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the engaging groove, and is formed on an edge portion of the upper side portion of the vibration isolator body disposed on an opening side of the engaging groove A locking portion bent downward, and the upper side portion of the isolator body is clamped, fastened and fixed from above and below by a pair of nuts that are screw-mounted on the shaft portion of the suspension stud in a state where the shaft portion of the suspension stud is inserted into the engagement groove. With this configuration, even in a vibration isolator of the type in which the frame body has a side portion on only one side, such a vibration isolator can be used in practice depending on where the engaging groove is formed, thus expanding the application range of the present invention. In the above-described configuration, one or more ribs may be formed along the longitudinal direction of the side portion of the vibration isolator body. With this configuration, the strength of the side portion of the vibration isolator body formed of the U-shaped frame body can be maintained by the ribs, and thus the side portion of the vibration isolator body can be reinforced. In the above-described configuration, a protrusion that prevents rotation of the nut may be formed on a back surface of the upper side portion of the vibration isolator body. With this configuration, it is not necessary to prevent the nut from rotating with a tool, and the mounting operation can be performed efficiently.

Drawings

Fig. 1 is a perspective view of the suspended vibration isolator according to the first example of the first embodiment of the present invention, showing an installed state of the suspended vibration isolator.

Figure 2 is a perspective view showing the relationship between the suspension box, upper suspension stud and locking tab of the suspended vibration isolator before the isolator is installed.

Fig. 3(a) to 3(C) are views showing a suspension box of the suspended vibration isolator, wherein fig. 3(a) is a plan view of the suspension box, fig. 3(B) is a front view of the suspension box, and fig. 3(C) is a bottom view of the suspension box.

Fig. 4(a) and 4(B) are views showing a lock tab of the suspended vibration isolator, wherein fig. 4(a) is a plan view of the lock tab, and fig. 4(B) is a side view of the lock tab.

Fig. 5(a) and 5(B) are views showing another lock tab of the suspended vibration isolator, wherein fig. 5(a) is a plan view of the other lock tab, and fig. 5(B) is a side view of the other lock tab.

Fig. 6 is a perspective view illustrating an installation state of the suspension isolator according to the second example.

Figure 7 is a perspective view showing the relationship between the suspension box, upper suspension stud and locking tab of the suspended vibration isolator before the isolator is installed.

Fig. 8(a) to 8(C) are views showing a suspension box of the suspended vibration isolator, in which fig. 8(a) is a plan view of the suspension box, fig. 8(B) is a front view of the suspension box, and fig. 8(C) is a bottom view of the suspension box.

Fig. 9(a) and 9(B) are views showing a locking tab of the suspended vibration isolator, wherein fig. 9(a) is a plan view of the locking tab, and fig. 9(B) is a side view of the locking tab.

Fig. 10 is a perspective view illustrating an installation state of the suspension isolator according to the third example.

Figure 11 is a perspective view showing the relationship between the suspension box, upper suspension stud and locking tab of the suspended vibration isolator before the isolator is installed.

Fig. 12(a) to 12(C) are views showing a suspension box of the suspended vibration isolator, in which fig. 12(a) is a plan view of the suspension box, fig. 12(B) is a front view of the suspension box, and fig. 12(C) is a bottom view of the suspension box.

Fig. 13(a) and 13(B) are views showing a locking tab of the suspension isolator, wherein fig. 13(a) is a plan view of the locking tab, and fig. 13(B) is a side view of the locking tab.

Fig. 14 is a perspective view illustrating an installation state of the suspension isolator according to the fourth example.

Figure 15 is a perspective view showing the relationship between the suspension box, upper suspension stud and locking tab of the suspended vibration isolator before the isolator is installed.

Fig. 16(a) to 16(D) are views showing a suspension box of the suspended vibration isolator, in which fig. 16(a) is a plan view of the suspension box, fig. 16(B) is a front view of the suspension box, fig. 16(C) is a bottom view of the suspension box, and fig. 16(D) is a side view of a main portion of the suspension box.

Fig. 17(a) and 17(B) are views showing a lock tab of the suspended vibration isolator, wherein fig. 17(a) is a plan view of the lock tab, and fig. 17(B) is a side view of the lock tab.

Fig. 18 is a perspective view illustrating an installation state of the suspension isolator according to the fifth example.

Figure 19 is a perspective view showing the relationship between the suspension box and the upper suspension stud of the suspended vibration isolator before the isolator is installed.

Fig. 20(a) to 20(D) are views showing a suspension box of the suspended vibration isolator, wherein fig. 20(a) is a plan view of the suspension box, fig. 20(B) is a front view of the suspension box, fig. 20(C) is a bottom view of the suspension box, and fig. 20(D) is a side view of the suspension box.

Fig. 21 is a perspective view illustrating an installation state of the suspension isolator according to the sixth example.

Figure 22 is a perspective view showing the relationship between the suspension box and the upper suspension stud of the suspended vibration isolator before the isolator is installed.

Fig. 23(a) to 23(C) are views showing a suspension box of the suspended vibration isolator, in which fig. 23(a) is a plan view of the suspension box, fig. 23(B) is a front view of the suspension box, and fig. 23(C) is a bottom view of the suspension box.

Fig. 24(a) to 24(C) are diagrams showing a suspension box according to a seventh example, in which fig. 24(a) is a plan view of the suspension box, fig. 24(B) is a bottom view of the suspension box, and fig. 24(C) is a cross-sectional view of the suspension box taken along line a-a' in fig. 24 (B).

Fig. 25 is a perspective view showing the suspended vibration isolator according to the eighth example, and is also a diagram for describing a process from before installation to after installation of the suspended vibration isolator.

Fig. 26(a) to 26(D) are views showing a suspension box of the suspended vibration isolator, in which fig. 26(a) is a plan view of the suspension box, fig. 26(B) is a front view of the suspension box, fig. 26(C) is a bottom view of the suspension box, and fig. 26(D) is a side view of the suspension box.

Fig. 27(a) to 27(C) are views showing a U-shaped coupling frame body of the suspension vibration isolator, wherein fig. 27(a) is a plan view of the U-shaped coupling frame body, fig. 27(B) is a front view of the U-shaped coupling frame body, and fig. 27(C) is a side view of the U-shaped coupling frame body.

Fig. 28 is a perspective view of the suspended vibration isolator according to the first example of the second embodiment of the present invention, showing the installed state of the suspended vibration isolator.

Fig. 29(a) to 29(C) are views showing a suspension frame of the suspended vibration isolator, in which fig. 29(a) is a plan view of the suspension frame, fig. 29(B) is a front view of the suspension frame, and fig. 29(C) is a bottom view of the suspension frame.

Fig. 30 is a perspective view illustrating an installation state of the suspension isolator according to the second example.

Fig. 31(a) to 31(E) are views showing a suspension frame of the suspended vibration isolator, in which fig. 31(a) is a plan view of the suspension frame, fig. 31(B) is a front view of the suspension frame, fig. 31(C) is a bottom view of the suspension frame, fig. 31(D) is a side view of the suspension frame, and fig. 31(E) is a cross-sectional view of the suspension frame taken along line a-a' in fig. 31 (D).

List of reference numerals

1 vibration isolation suspension (suspension type vibration isolator)

2 hanging box (vibration isolator)

3 elastic rubber Member (vibration isolation Member)

21 upper side part

22 lower side part

23. 24 side part

25 joining groove (first joining groove)

26 round hole

3031 engagement groove (second engagement groove)

32. 33 locking tab

34. 35 locking part

37 upper hexagon nut

38 lower hexagonal nut

72 suspension frame (Joint frame body)

81 upper side part

82 lower side part

83 side part

85 joining groove

86 locking part

88 Rib

B1 Upper suspension stud (suspension stud)

B2 lower suspension stud (suspension stud)

Detailed Description

Hereinafter, embodiments of the suspension type vibration isolator according to the present invention will be described with reference to the accompanying drawings.

< first embodiment >

(first example)

In fig. 1, reference numeral 1 indicates an isolation suspension, which is illustrated as one embodiment of a suspended vibration isolator. The isolation mount 1 is mounted in an intervening manner on the middle of the suspension stud, i.e. between the upper suspension stud B1 and the lower suspension stud B2. The vibration damping suspension 1 elastically supports an air conditioner, air conditioner piping, and the like (not shown in the drawings) via a vibration damping member (described later). With this configuration, the vibration isolating suspension 1 has a function of mainly absorbing a vertical vibration component among vibrations generated by the air conditioner, thereby preventing the vertical vibration component from being propagated to a concrete slab (not shown in the drawings). Generally, full-threaded studs having a nominal diameter of 10 are used as suspension studs, and therefore in the figures, full-threaded studs each having a nominal diameter of 10 are illustrated as upper suspension stud B1 and lower suspension stud B2, respectively. However, studs having other gauges, such as 3/8 inch studs or 1/2 inch studs, may of course be used.

The vibration damping suspension 1 is mainly formed of a suspension box 2 and an elastic rubber member 3, the suspension box 2 is a vibration damping body that elastically supports an air conditioner or the like, and the elastic rubber member 3 is a vibration damping member that is attached to the suspension box 2 and absorbs vibration of the air conditioner or the like.

As shown in fig. 2 and 3(a) to 3(C), the suspension box 2 is formed of a frame body having an upper side portion 21, a lower side portion 22, and a pair of left and

right side portions

23, 24. The suspension box 2 is formed by bending rolled steel (SS400) for general construction into a hollow rectangular shape (a box shape with open front and back surfaces). The suspension box 2 is configured as described above such that: the suspension box 2 can elastically support an air conditioner or the like by separating (terminating) the suspension stud to the upper suspension stud B1 and the lower suspension stud B2 while supporting the load of the air conditioner or the like, and by interposing the elastic rubber member 3 forming the vibration isolation member between the upper suspension stud B1 and the lower suspension stud B2. In addition, the frame body is formed in an elongated and miniaturized shape as a whole, whereby the vibration isolating suspension 1 can be mounted even in a narrow space.

An engagement groove 25 is formed by a cutout in the upper side portion 21 of the suspension box 2, the engagement groove 25 having an approximately U-shape as viewed in plan and having a predetermined width (in the drawing, the width W is 25mm), and the engagement groove 25 is capable of fitting on a shaft portion of the upper suspension stud B1 (a full-threaded stud having a nominal diameter of 10, or a hexagonal compression stud having a nominal diameter of 10) from a horizontal direction in a state where the shaft portion is inserted into the engagement groove 25. In the lower side portion 22, a circular hole 26 having a predetermined diameter (in the drawing, the diameter Φ is 19mm) is formed, and the lower suspension stud B2 can be loosely fitted in the circular hole 26. The engagement groove 25 is formed in a state where a cutout opening of the engagement groove 25 is directed toward one case opening side of the suspension case 2.

The elastic rubber member 3 is fixed to the suspension box 2 such that the upper end portion of the lower suspension stud B2 passing through the circular hole 26 formed in the lower side portion 22 of the suspension box 2 passes through the central axial hole formed in the elastic rubber member 3, and the elastic rubber member 3 is fastened and fixed to the lower side portion 22 of the suspension box 2 from above by two

nuts

27, 28 with washers interposed between the two

nuts

27, 28 and the elastic rubber member 3.

Fig. 4(a), 4(B) and fig. 5(a), 5(B) show locking

tabs

32, 33 each having a square plate shape, approximately

U-shaped engagement grooves

30, 31 substantially equivalent to the engagement grooves 25 formed in the upper side portion 21 of the suspension box 2 are formed in the locking

tabs

32, 33 by cutouts, and the locking

tabs

32, 33 can be fitted on the shaft portion of the upper suspension stud B1 from the horizontal direction in a state where the shaft portion is inserted into the square plate

type engagement grooves

30, 31, respectively. The locking

tabs

32, 33 are configured to form L-shaped or

U-shaped locking portions

34, 35 on both distal edge portions of the locking

tabs

32, 33 on the cutout opening sides of the

engagement grooves

30, 31, the locking

portions

34, 35 being lockable with the edge portions of the upper side portion 21 of the suspension box 2. That is, fig. 4(a), 4(B) show an example of the L-shaped locking portion 34. When the engagement groove 30 of the locking tab 32 is fitted on the shaft portion of the upper suspension stud B1 in a state where the shaft portion is inserted into the engagement groove 30 and thereafter the locking tab 32 is moved rearward, the locking portion is brought into contact with and engaged with the opening side edge portion of the upper side portion 21 of the suspension box 2. Fig. 5(a), 5(B) show an example of the U-shaped lock portion 35. When the engagement groove 31 of the locking tab 33 is fitted on the shaft portion of the upper suspension stud B1 in a state where the shaft portion is inserted into the engagement groove 31 and thereafter the locking tab 33 is moved rearward, the locking portion is brought into engagement with the suspension box 2 so as to clamp the opening-side edge portion of the upper side portion 21 of the suspension box 2. In addition, either the lock tab 32 having the lock portion 34 or the lock tab 33 having the lock portion 35 is fitted on the shaft portion of the upper suspension stud B1 inserted in the

engagement grooves

30, 31, and in a state where the

lock portions

34, 35 engage the opening side edge portion of the upper side portion 21 of the suspension box 2, the lock tab and the upper side portion 21 of the suspension box 2 are clamped, fastened and fixed to each other from above and below by two

nuts

37, 38 that are screw-mounted on the shaft portion of the upper suspension stud B1.

In the above description, the case where the locking portion 34 of the locking tab 32 is formed in the L shape and the case where the locking portion 35 of the locking tab 33 is formed in the U shape are exemplified. However, the locking

portions

34, 35 may of course have other shapes. In addition, in the above description, an example in which the suspended box 2 is formed using a rolled steel material (SS400) for a general structure is exemplified. However, the material for forming the suspension tank 2 is not limited to such a steel material. The material for forming the suspension box 2 is not particularly limited as long as the material for forming the suspension box 2 has an allowable tensile strength to the extent of being able to support a load applied to one suspension stud (for example, one-fourth of the weight of an air conditioner when the air conditioner is supported in a four-point suspension structure).

< step of mounting vibration damping suspension >

Next, a step of mounting the vibration isolating suspension is described with reference to fig. 2 and 1.

First, as shown in fig. 2, both the upper hex nut 37 and the lower hex nut 38 are mounted at a predetermined distance between them on the lower end of an upper suspension stud B1 suspended from the concrete slab, which forms a structural frame not shown in the drawings. By setting the distance to be at least larger than the sum of the thickness of the upper side of the suspension box 2 and the thickness of the locking

tabs

32, 33, the upper side 21 and the locking

tabs

32, 33 can be clamped between the two

nuts

37, 38.

Next, the construction worker lifts up the vibration apparatus such as an air conditioner on which the suspension box 2 is previously mounted via the lower suspension stud B2, and fits the engagement groove 25 formed in the upper side portion 21 of the suspension box 2 on the shaft portion of the upper suspension stud B1 between the nuts 37, 38 from the horizontal direction so that the shaft portion is inserted into the engagement groove 25. When the upper side 21 of the suspension box 2 is placed on the lower hexagonal nut 38 and engaged with the lower hexagonal nut 38, the equipment thereafter is prevented from falling. Then, the engagement groove 30 of either one of the locking

tabs

32, 33, for example, as shown in fig. 2, the engagement groove 30 of the locking tab 32 is fitted on the shaft portion of the stud B1 inserted into the engagement groove 25 between the nut 38 and the upper side portion of the suspension box 2 from the horizontal direction in the same manner. After the fitting of the locking tab 32, the locking tab 32 is slightly retracted so that the locking portion 34 is engaged with the opening-side edge portion of the upper side portion 21 of the suspension box 2. Then, in this engaged state, by screwing the upper hexagonal nut 37, the upper hexagonal nut 37 is moved downward along the shaft so that the upper side portion 21 of the suspension box 2 and the locking tab 32 are fastened and fixed to each other by the upper hexagonal nut 37 and the lower hexagonal nut 38, thereby completing the installation of the vibration isolating suspension 1.

In mounting the vibration isolation suspension, unlike conventional work, there is no post-processing of the lower hex nut 38, and therefore the need for the installer to support the vibrating equipment, which is a heavy object, can be minimized. In the specification, "minimize" means that the installer is required only during the time of lifting the vibration apparatus by the installer, inserting the shaft portion of the upper suspension stud B1 into the engagement groove 25 of the suspension box 2, and placing the suspension box 2 on the lower hexagon nut 38.

In the above configuration, the locking tab 33 may be used instead of the locking tab 32. When the lock tabs 33 are used, the lock tabs 33 are engaged with the suspended box 2 so that the lock portions 35 sandwich the opening side edge portions of the upper side portion 21 of the suspended box 2, and therefore the lock tabs 33 move minimally relative to the suspended box 2, so that the lock tabs 33 engage the suspended box 2 with greater reliability.

< mode of operation and advantageous effects of vibration damping suspension >

In the heretofore described isolation suspension 1 as a suspension type vibration isolator according to the embodiment of the invention, the engaging groove 25 formed in the upper side portion 21 of the suspension box 2 has an approximately U-shape, and the engaging groove 25 is formed in a state in which the cutout opening of the engaging groove 25 is directed toward the box opening side of the suspension box 2. Therefore, the mounting of the suspension box 2 onto the shaft portion of the upper suspension stud B1 can be performed from the horizontal direction, so that the mounting operation can be performed quickly and smoothly. In addition, in the mounting operation, it is also possible to shorten the time for the mounting worker to support the vibration apparatus which is a heavy object, thereby enhancing the operability. Therefore, the mounting time can be shortened, and the mounting can be simplified and made easier. In addition, the mounting of the vibration isolator body can prevent the equipment from falling by suspending only the engagement groove 25 of the suspension box 2 to the lower nut 38 screw-mounted on the shaft portion of the upper suspension stud B1, and therefore, the equipment can be reliably prevented from falling and safety is also taken into consideration. In addition, the place where the isolator body is installed is mainly the space in the ceiling. It is therefore necessary to carry and install the apparatus through a narrow space such as an inspection opening. However, this drawback can be overcome by the suspended vibration isolator of this embodiment. In addition, although at least two installers are required to conventionally install one set of equipment, the insulator body can be inserted from the horizontal direction, i.e., the insulator body can be slidably installed, and thus the insulator body can also be installed by one installer. In this way, this embodiment can obtain excellent advantageous effects such as reduction in cost and reduction in the number of installers, and can further ensure the safety of the installers.

(second example)

Fig. 6 to 9(a), 9(B) show a second example. The suspended vibration isolator of the second example includes a lock tab 40, the lock tab 40 being substantially identical in construction to the lock tab 32 of the first example. That is, the locking tabs 40 are configured such that L-shaped locking portions 42 are formed on both distal edge portions of the locking tabs 40 on the cutout opening side of the approximately U-shaped engagement groove 41, the locking portions 42 being capable of locking with the edge portion of the upper side portion 21a of the suspension box 2 a. In addition, a recessed portion 43 is formed by a cutout on an edge portion of the upper side portion 21a of the suspension box 2a with which the locking portion 42 of the locking tab 40 is engaged, the locking portion being able to be fitted in this recessed portion 43. In a state where the lock tab 40 is mounted on the suspension box 2a, the lock portion 42 is fitted in the recess portion 43. The other configurations of the second example are substantially identical to the respective configurations of the first example. In addition, the second example is also substantially equivalent to the first example with respect to the mounting step, the manner of operation, and the advantageous effects. According to the present example, the locking portion 42 of the locking tab 40 is accommodated in the recessed portion 43 without protruding from the opening side edge portion of the upper side portion 21a of the suspension box 2a, and therefore, the engaged state when the locking tab 40 is engaged becomes stable.

(third example)

Fig. 10 to 13(a), 13(B) show a third example. The third example suspended vibration isolator includes another type of locking tab 45. That is, the locking tab 45 is configured such that an elongated groove 47 is formed by a cutout along both sides of the engagement groove 46, and the elongated groove is slidably engaged with a rivet (projection) 48 or the like formed on the upper side portion 21b of the suspension case 2 b. In addition, in a state where the shaft portion of the upper suspension stud B1 is insertable into the engagement groove 46 formed in the lock tab 45, the engagement groove 46 is fitted over the shaft portion of the upper suspension stud B1 inserted into the engagement groove 25B formed in the upper side portion 21 of the suspension box 2. The other configurations, mounting steps, manners of operation, and advantageous effects in the third example are substantially equivalent to the corresponding configurations, mounting steps, manners of operation, and advantageous effects in the first example. According to the third example, the locking tab 45 may be held such that the locking tab 45 is always attached to the upper side portion 21b of the suspension box 2 b.

(fourth example)

Fig. 14 to 17(a), 17(B) show a fourth example. In the fourth example, the hook-shaped locking tab 49 is pivotally supported on one side of the engagement groove 25c formed in the suspension box 2c in a rotatable (openable and closable) manner by a rivet 50 or the like. An engagement groove 48 is formed in the locking tab 49 by a cutout, and the engagement groove 48 is engageable with the shaft portion of the upper suspension stud B1 inserted into the engagement groove from the outside. In the present example, the engagement groove 48 has a circular arc shape. A projection 51 is formed on the upper side portion 21c of the suspension box 2c at a position near the bottom of the engagement groove 25c by cutting and raising, the projection 51 forms a nut receiver, and the height of the projection 51 is substantially equal to the height of the rivet 50 or the like. In fig. 16(a) to 16(C), a symbol 52a indicates an engagement hole formed on the other side of the engagement groove 25C in the upper side portion 21C of the suspension tank 2C, and an engagement projection 52B (fig. 17(B)) formed on the lock tab 49 is engaged with the hole by fitting so that the engagement of the lock tab 49 and the suspension tank 2C is not released. The engagement hole 52a and the engagement projection 52b form a mechanism that prevents the release of the engagement of the lock tab 49. In mounting the vibration isolator body, when the engagement groove 48 of the locking tab 49 is engaged with the shaft portion of the upper suspension stud B1 inserted into the engagement groove 25c from the outside, the engagement projection 52B is fitted in the engagement hole 52a so that the engagement between the two members is not released. The mechanism having such a release prevention function shown in the drawings is only one example, and other mechanisms capable of obtaining substantially the same advantageous effects are of course available. The other configurations, mounting steps, manners of operation, and advantageous effects in the fourth example are substantially equivalent to the respective configurations, mounting steps, manners of operation, and advantageous effects in the first example. Therefore, in the present example, also in the same way as the lock tab 45 of the third example, the lock tab 49 can be held so that the lock tab 49 is always attached to the upper side portion 21c of the suspension box 2 c.

(fifth example)

Fig. 18 to 20(a) to 20(C) show a fifth example. In a fifth example, a locking tab substantially identical to the locking tab used in example 1 was not used. That is, the notched portion 53 is formed on the edge on the notched opening side of the engagement groove 25d, the engagement groove 25d is formed on the upper side portion 21d of the suspension box 2d through the notch, and the lock portion 54 is formed on the edge, the lock portion 54 is formed on the edge by cutting and standing downward from the portion where the notched portion 53 is formed, and forms the nut receiving portion. At a position adjacent to the cutout portion 53 of the engagement groove 25d formed in the upper side portion 21d of the suspension box 2d, a lock portion 54 is formed in an approximately right angle in a downwardly extending manner. In addition, in the present example, in the mounting step, the engagement groove 25d formed in the upper side portion 21d of the hanger case 2d is fitted on the shaft portion of the stud B1 between the nuts 37, 38 in a state where the shaft portion is inserted into the engagement groove 25d, and the lower nut 38 screw-mounted on the shaft is brought into contact with the lock portion 54. Then, by screwing the upper nut 37, the nuts 37, 38 and the upper side portion 21d of the suspension tank 2d are fixed to each other by fastening. The other configurations, mounting steps, manners of operation, and advantageous effects in the fifth example are substantially equivalent to the corresponding configurations, mounting steps, manners of operation, and advantageous effects in the first example. Therefore, the nuts 37, 38 can be mounted in a stable state. In this case, the locking tab used in the corresponding example is not required.

(sixth example)

Fig. 21 to 23(a) to 23(C) show a sixth example. In the sixth example, the engagement groove 56 formed in the upper side portion 21e of the suspension tank 2e has a circular hole portion 57 having a slightly larger diameter on the deep side thereof. In a state where the shaft portion of the upper suspension stud B1 is inserted into the engagement groove 56, when the engagement groove 56 is fitted on the shaft portion, a stepped lock washer 58 shown in the drawing, through which the shaft portion between the nuts 37, 38 is previously passed, is mounted on the upper side portion 21e of the suspension box 2e so that the stepped lock washer 58 is fitted in the circular hole portion 57. With this configuration, the upper side portion 21e of the hanging box 2e and the stepped locking washer 58 are fixed to each other by the nuts 37, 38 from above and below by fastening. The other configurations, mounting steps, manners of operation, and advantageous effects in the sixth example are substantially equivalent to the respective configurations, mounting steps, manners of operation, and advantageous effects in the first example. Therefore, the isolator body can be mounted on the shaft portion of the upper suspension stud B1 with the lock washer 58 preventing removal of the shaft portion.

(seventh example)

Fig. 24(a) to 24(C) show a seventh example. In the seventh example, on the back surface of the upper side portion 21f of the suspension box 2f, the projection 60 is formed by cutting and raising, and the projection 60 surrounds the lower nut 38 in a state where the projection 60 sandwiches the engagement groove 25f and prevents the lower nut 38 from rotating. With this configuration, when the engagement groove 25f of the suspension box 2f is fitted on the shaft portion of the upper suspension stud B1 in a state where the shaft portion is inserted into the engagement groove 25f, the surface of the hexagonal lower nut 38 mounted on the shaft portion, which is opposite to the protrusion 60, comes into contact with the protrusion 60. Thus, the lower nut is placed in a non-rotatable state by the projection 60, and thus no tool is required to hold the lower nut 38. Therefore, the subsequent fixing operation of the upper nut 37 can also be performed by screw engagement or the like without any difficulty, thereby enhancing the operability. The distance between the protrusions 60 is arbitrarily adjusted corresponding to the size of the lower nut 38. Also in the present example, the vibration isolator body can be installed without particularly requiring a member such as the lock tab shown in the respective examples. The other configurations, mounting steps, manners of operation, and advantageous effects in the seventh example are substantially equivalent to those in the first example. The protrusions 60 may also be formed in examples 1 to 6. Since the projection 60 is provided, it is not necessary to hold the lower nut 38 with a tool, and therefore, operability can be enhanced also in these examples.

(eighth example)

Fig. 25 to 27(a) to 27(C) show an eighth example. In the eighth example, the U-shaped engaging frame body 62 is mounted on the upper portions of the two side portions 23g, 24g of the suspension box 2g in a state where the base end of the engaging frame body 62 is pivotally supported so that the engaging frame body 62 can swing to a position above and on the lateral side of the upper side portion 21g (as indicated by arrow a) and the engaging frame body 62 can slide upward and downward on the two side portions 23g, 24 g. The joint frame body 62 is formed of two side portions 63 and a connecting portion 64 connecting the two side portions 63 to each other. Rivets 65 and the like are formed on lower end portions of the two side portions 63, and the rivets 65 and the like are engaged with elongated holes 66 formed in the two side portions 23g, 24g of the suspension box 2g, respectively. At the time of mounting the vibration isolator body, the rivet 65 is engaged with the lower end of the elongated hole 66 accordingly so as to bring the engaging frame body 62 into the standing state, and thereafter the rivet 65 is engaged with the upper end of the elongated hole 66 so that the connecting portion 64 can contact the upper surface of the upper side portion 21 g. An approximately U-shaped engagement groove 67 substantially equivalent to the engagement groove 25g is formed in the connecting portion 64 at a position corresponding to the engagement groove 25g by a cutout. In addition, in a state where the engagement groove 67 of the engagement frame body 62 and the engagement groove 25g of the upper side portion 21g of the suspension box 2g are fitted on the shaft portion of the upper suspension stud B1 so that the shaft portion is inserted into the engagement groove 67 and the engagement groove 25g, the connection portion 64 of the engagement frame body 62 and the upper side portion 21g of the suspension box 2g are clamped, fastened, and fixed to each other from above and below by the lower nut 38 and the upper nut 37. In fig. 26(a) to 26(D), a symbol 68a indicates an engagement hole formed on the other side of the engagement groove 25g in the upper side portion 21g of the suspension tank 2 g. An engaging projection 68B (fig. 27(B)) formed on the connecting portion 64 of the engaging frame body 62 is engaged with the engaging hole by fitting so that the engagement of the engaging frame body 62 and the suspension box 2g is not released. The engagement hole 68a and the engagement projection 68b form a mechanism that prevents the engagement of the engagement frame body 62 from being released. In mounting the vibration isolator body, when the engagement groove 67 of the engagement frame body 62 engages the shaft portion of the upper suspension stud B1 from the outside, the engagement projection 68B is fitted in the engagement hole 68a so that the engagement between the two members is not released. The mechanism having such a release prevention function shown in the drawings is only one example in the same manner as the above-described example, and other mechanisms capable of obtaining substantially the same advantageous effects are also available. The other configurations, mounting steps, manners of operation, and advantageous effects in the eighth example are substantially equivalent to the corresponding configurations, mounting steps, manners of operation, and advantageous effects in the first example. Therefore, in the case of this example, the vibration isolator body can be mounted by performing a simple operation such as swinging and sliding the engaging frame body 62.

< second embodiment >

(first example)

The second embodiment is different from the first embodiment in basic configuration with respect to the following point. In the second embodiment, the member corresponding to the suspension tank in the first embodiment is not formed in a tank shape or a quadrangular ring shape as seen in a front view different from that of the first embodiment. That is, the member corresponding to the suspension box in the first embodiment is formed by a frame body (suspension frame) 72 having an upper side portion 81, a lower side portion 82, and any one of left and right side portions 83 by bending a plate into a U-shape. Fig. 28 to 29(a) -29(C) show a first example of the second embodiment. In the first example, an approximately U-shaped engagement groove 85 having a predetermined width (in the drawing, W is 25mm) is formed in the upper side portion 81 of the suspension frame 72 by a cutout, and the engagement groove 85 is fitted on the shaft portion of the upper suspension stud B1 from the horizontal direction in a state where the shaft portion is inserted into the engagement groove 85. Unlike the engaging groove 25 and the like of the first embodiment, the engaging groove 85 is formed by notching such that the notch opening of the engaging groove 85 is directed not toward the box opening side but toward the side of the suspension box having no side portion (the side opposite to the side edge portion). A locking portion 86 bent downward is formed on an edge of the upper side portion 81 of the suspension frame 72 provided on the opening side of the engagement groove 85. A circular hole 83 having a predetermined diameter (in the drawing, the diameter Φ is 15.5mm) is formed in the lower side portion 82 of the suspension frame 72 in substantially the same manner as in the corresponding example in the first embodiment, the circular hole 83 allowing loose fitting of the lower suspension stud B2 in the circular hole 83.

In mounting the suspension frame 72, the installer lifts up the vibration apparatus such as an air conditioner, fits the engagement groove 85 formed in the upper side portion 81 of the suspension frame 72 between the nuts 37, 38 from the horizontal direction on the shaft portion of the stud B1 in a state where the shaft portion is inserted into the engagement groove 85, with the suspension frame 72 being mounted in advance on the vibration apparatus via the lower suspension stud B2. Then, when the upper side portion 81 of the suspending frame 72 is placed on the lower hexagonal nut 38 and engaged with the lower hexagonal nut 38, the locking portion 86 performs a function of preventing the nut 38 from being removed, so as to prevent the apparatus from falling thereafter. Then, in this engaged state, by screwing the upper hexagonal nut 37, the upper hexagonal nut 37 is moved downward along the shaft so as to be fastened and fixed by the upper hexagonal nut 37 and the lower hexagonal nut 38, whereby the mounting of the vibration isolating suspension is completed.

(second embodiment)

Fig. 30 and fig. 31(a) to 31(D) show a second example. In the second example, a plurality of ribs 88 are formed along the longitudinal direction of the side portion 83a of the suspending frame 72 a. In the present example, as shown in the drawing, ribs 88 are formed on both sides of the side portion 83a in the width direction. However, such a configuration is not always necessary. The number of the ribs 88 may be arbitrarily set as long as the hanger frame 72a has a plurality of ribs 88. In addition, the hanger frame 72a may have only one rib 88. By forming the ribs 88 on the suspension frame 72a, the side portion 83a of the suspension frame 72a can obtain high strength. Other configurations including a configuration in which the locking portion 86a bent downward is formed on the edge portion of the upper side portion 81a of the suspension frame 72a provided on the opening side of the engagement groove 85a and the mounting step of the suspension frame 72a are substantially equivalent to the corresponding configurations and mounting steps of the suspension frame in the first example. In addition, the first and second examples of the embodiment may include the configurations described in the seventh example shown in fig. 24(a) to 24(C) in the first embodiment. That is, the protrusions that prevent the lower nuts 38 from rotating are formed by cutting and raising so as to sandwich the

engagement grooves

85, 85a on the back surfaces of the

upper side portions

81, 81a of the suspension frames 72, 72 a. With this configuration, the second embodiment can expect the operational manner and advantageous effects substantially equivalent to those obtained by the seventh example of the first embodiment.

As has been described heretofore, in the first and second embodiments of the present invention, description has been made by taking an air conditioner as an example of a vibration apparatus. However, the vibration device may be a pipe or the like.

The shapes, structures, etc. of the respective constituent members shown as constituent elements of the suspension isolators according to the first and second embodiments of the present invention are merely illustrative of one preferred example, and various design modifications can of course be conceived without departing from the scope of the claims. In particular, although a concrete slab placed on a deck of a building having a steel frame structure (S structure) is exemplified as the structural frame, the structural frame is not limited to such a concrete slab. The present invention is applicable to any structural frame such as a floor concrete plate in a building having a reinforced concrete structure (RC structure), a beam, a rafter of a steel frame, a slope member of a roof, etc. in a building having an S structure, as long as the structural frame can support a vibration apparatus.

Claims

1. A suspended vibration isolator comprising a vibration isolator body having an upper side and a lower side, the vibration isolator body being installed on a middle portion of a suspension stud in an intervening manner from which a vibration device is suspended, the vibration device producing vibrations, and the vibration isolator body supporting a load of the vibration device, wherein

The vibration isolator body has a first engaging groove formed by a cutout in the upper side portion, and the first engaging groove is fittable on a shaft portion of the suspension stud from a horizontal direction in a state where the shaft portion of the suspension stud is inserted into the first engaging groove, and

a hook-shaped locking tab in which a second engagement groove is formed by a cutout is pivotally supported on the isolator body on one side of the first engagement groove, the second engagement groove being engageable with the shaft portion of the suspension stud inserted into the first engagement groove from the outside,

an engagement hole is provided in the upper side portion on the other side of the first engagement groove, and the lock tab is provided with an engagement projection which is engaged by fitting with the engagement hole in a state where the lock tab is engaged with the shaft portion of the suspension stud inserted into the first engagement groove, and

the locking tab and the upper side portion of the isolator body are clamped from above and below by a pair of nuts, and the pair of nuts fasten and fix the locking tab and the upper side portion of the isolator body to each other, the pair of nuts being screw-mounted on the shaft portion of the suspension stud.

2. The suspended vibration isolator according to claim 1, wherein a protrusion is formed on the upper side of the isolator body, the protrusion forming a nut receptacle.

3. The suspended vibration isolator according to claim 1, wherein the isolator body is formed from a hollow rectangular frame body having the upper side, the lower side, and a pair of left and right sides.

4. A suspended vibration isolator as set forth in claim 3 wherein a protrusion preventing rotation of said nut is formed on a back surface of said upper side of said isolator body.