JP5835796B2 - Ceiling suspended vibration isolator - Google Patents

Description

  The present invention relates to a ceiling-suspended vibration isolator that suspends ceiling-suspended apparatuses such as air conditioners and piping ducts.

  Conventionally, as a ceiling suspended vibration-proof structure for suspending ceiling-suspended devices such as air conditioning equipment and piping ducts, an upper suspension material suspended from a ceiling-side support portion and a suspended suspension such as an air-conditioner A housing for attaching a lower suspension material for suspending the holder, an upper rubber seat having a through hole attached to an upper attachment portion of the housing, and a coil spring having one end attached to the upper rubber seat; A lower rubber seat with a washer having a through-hole attached to the other end of the coil spring, and a screw on a tip screw portion of the upper suspension member passing through the upper rubber seat, the coil spring and the lower rubber seat with a washer The thing of the structure which comprises the fixed nut couple | bonded is known (for example, refer patent document 1).

  According to the structure described in Patent Document 1, it is possible to reduce the size with a small number of parts, and it is possible to suppress vibration from being transmitted between the ceiling side support portion and the suspended body.

Japanese Patent Laying-Open No. 2011-141013 (FIGS. 1, 6 and 9)

  By the way, this type of vibration isolating structure including a coil spring is designed in consideration of the safety factor of the coil spring in particular according to the weight of the suspended body.

  In the thing of patent document 1, at the time of assembly | attachment work, an operator tightens a nut with tools, such as a spanner, from the open side of a housing, and adjusts height so that a to-be-suspended body becomes horizontal with the amount of the tightening. ing. In addition, when the suspended body is suspended at a plurality of locations, the center of gravity of the suspended body is often not in the center, and the load load on each part is not constant, so that the load is uniformly applied to each vibration isolator. Therefore, the height of the suspended body is adjusted with each vibration isolator.

  However, in the thing of patent document 1, in order to adjust the level of a to-be-suspended body by tightening a nut using an operator's visual observation or a level (level), adjust a plurality of vibration isolators. It is not easy to obtain the level of the suspended body. In addition, since the orientation of the vibration isolator during assembly is not constant, if the opening side of the housing faces the suspended body and the vertical portion is located on the outside, the suspended body can be further adjusted horizontally. There is a concern that it becomes difficult and workability decreases.

  The present invention has been made in view of the above circumstances, and can be made compact with a small number of constituent members, and the height of the suspended body caused by deflection due to different load loads using a coil spring in consideration of the safety factor. An object of the present invention is to provide a ceiling-suspended vibration isolator that can easily adjust the difference in level.

In order to solve the above-described problems, the present invention provides an upper mounting portion for attaching an upper suspension material suspended from a ceiling-side support portion, and a lower attachment portion for attaching a lower suspension material for suspending a suspended body. And a housing comprising a vertical portion that connects the opposing sides of the upper mounting portion and the lower mounting portion, and an upper rubber seat having a through hole that is attached to a mounting hole provided in the upper mounting portion. A coil spring with one end attached to the upper rubber seat, a lower rubber seat with a washer having a through hole attached to the other end of the coil spring, the upper rubber seat, the coil spring, and a lower rubber with a washer A ceiling-suspended vibration isolator having a fixing nut screwed to a tip screw portion of the upper suspension member that penetrates the seat, wherein the upper attachment portion and the lower attachment portion are attached to the center. Rectangular plate-like base having holes and one side of the plate-like base And the vertical portion is bent from two sides of the triangular protruding portion of the upper mounting portion and the lower mounting portion, and the tip of the triangular protruding portion is formed. A notch is provided across the bent portion on the side, reinforcing ribs are formed on both sides of the triangular protrusion and the both sides of the vertical portion in the bent portion, and the upper mounting portion in the vertical portion A vertical window hole is provided on the line connecting the tips of the triangular protrusions of the lower mounting part, and the position of the lower rubber seat with the washer can be confirmed, and loads are applied to both sides of the vertical opening edge of the vertical window hole. It is characterized by forming a scale for confirmation.

  By configuring in this way, the lower rubber seat with a washer that moves according to the tightening amount of the nut when assembling the suspended body can be seen from the vertical window hole, and the position of the lower rubber seat with the washer is confirmed with a load. It can be confirmed by the scale for

Further, by configuring in this way, the distal end side and the left and right sides of the plate-like base are opened, and the vertical part is bent at the two sides of the triangular protrusion, so that the open side of the housing can be widened. At the same time, the strength of the vertical portion can be increased. In addition, a notch is provided across the bent portion, and reinforcing ribs are formed on the two sides of the triangular protrusion and the vertical portion at the bent portion, so that the housing can be bent easily and the long window The strength of the housing provided with the holes can be improved. Furthermore, a vertically long window hole is provided on a line connecting the tips of the triangular protrusions of the upper mounting portion and the lower mounting portion in the vertical portion, and graduations for load confirmation are provided on both sides of the opening edge in the vertical direction of the vertical window hole. By forming, the range which confirms the scale for load confirmation can be expanded.

  According to this invention, since it is configured as described above, the following effects can be obtained.

  (1) According to the invention described in claim 1, since it can be confirmed by the vertical window hole provided in the vertical part of the housing and the scale for load confirmation, it can be made compact with a small number of components and the safety factor can be increased. Using the coil springs considered, it is possible to easily perform horizontal adjustment of the difference in height of the suspended body caused by deflection due to different load loads, and to improve the assembly workability.

(2) According to the first aspect of the invention, since the open side of the housing can be widened, the height adjustment and level adjustment work of the suspended body can be facilitated. Further, the strength of the vertical portion can be increased, the housing can be easily bent, and the strength of the housing provided with the vertical window hole can be improved. The wall thickness can be reduced, and the housing can be made compact and lightweight. Furthermore, a vertically long window hole is provided on a line connecting the tips of the triangular protrusions of the upper mounting portion and the lower mounting portion in the vertical portion, and graduations for load confirmation are provided on both sides of the opening edge in the vertical direction of the vertical window hole. By forming, it is possible to widen the range for checking the scale for load confirmation, so in addition to the above (1), the height adjustment and horizontal adjustment work of the suspended body can be easily performed, Assembling workability can be improved.

It is a schematic perspective view which shows an example of the use condition of the ceiling suspension type | mold vibration isolator which concerns on this invention. It is a perspective view which expands and shows the I section of FIG. It is side view (a) which shows the use condition of the ceiling suspension type | mold vibration isolator which concerns on this invention, and II arrow directional view (b) of (a). It is a perspective view which shows the housing in this invention. It is a decomposition | disassembly side view which shows the half part of the upper rubber seat in this invention, a coil spring, and the lower rubber seat with a washer in a cross section. It is a schematic side view which shows the assembly | attachment procedure of the to-be-suspended body using the ceiling suspension type | mold vibration isolator which concerns on this invention. It is a schematic perspective view which shows an example of another use condition of the ceiling suspension type | mold vibration isolator which concerns on this invention.

  Hereinafter, an embodiment of a ceiling suspended vibration isolator according to the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 shows a case where four ceiling suspended vibration isolator 1 (hereinafter referred to as vibration isolator 1) according to the present invention is used to suspend four places at a corner of a suspended body, for example, an air conditioner 2. It is a schematic perspective view which shows a use condition.

  As shown in FIGS. 1 to 3, the vibration isolator 1 includes an upper attachment portion 11 for attaching an upper suspension bolt 4 that is an upper suspension material suspended from a ceiling-side support portion 3, and a suspended body. A lower attachment portion 12 for attaching a lower suspension bolt 5 which is a lower suspension material for suspending a certain air conditioner 2, and a vertical portion for connecting opposite sides of the upper attachment portion 11 and the lower attachment portion 12 to each other. 13, an upper rubber seat 20 having a through hole 20 a attached to an attachment hole 11 a provided in the upper attachment portion 11, a coil spring 30 having one end attached to the upper rubber seat 20, A lower rubber seat 40 with a washer having a through hole 40a attached to the other end of the coil spring 30, and a tip thread portion of the upper suspension bolt 4 that penetrates the upper rubber seat 20, the coil spring 30 and the lower rubber seat 40 with a washer. 2 screwed to 4a Fixing nut 50a, it is provided with 50b, a. Further, the vertical portion 13 of the housing 10 is provided with a vertically long window hole 60 in which the position of the lower rubber seat 40 with a washer can be confirmed, and a load confirmation scale 70 is provided at the opening edge in the vertical direction of the vertically long window hole 60. Is formed.

  In the housing 10, an upper mounting portion 11, a lower mounting portion 12, and a vertical portion 13 are integrally formed by bending a steel plate. In this case, as shown in FIGS. 3 and 4, the upper mounting portion 11 and the lower mounting portion 12 include a rectangular plate-shaped base portion 14 having mounting holes 11 a and 12 a in the center, and one side of the plate-shaped base portion 14. And a triangular protrusion 15 extending in the horizontal direction. The vertical portion 13 is formed by bending from two sides of the triangular protrusion 15 of the upper attachment portion 11 and the lower attachment portion 12, and a notch 17 extends across the bending portion 16 on the distal end side of the triangular protrusion 15. A pair of left and right triangular reinforcing ribs 18 are formed on the two sides of the triangular protrusion 15 in the bent portion 16 and on both sides of the vertical portion 13. Further, a vertical window hole 60 is provided on a line connecting the tips of the triangular protrusions 15 of the upper mounting part 11 and the lower mounting part 12 in the vertical part 13, and both sides of the opening edge in the vertical direction of the vertical window hole 60. A scale 70 for confirming the load is formed. In this case, the scale 70 is formed at equal intervals from the upper edge of the vertically long window hole 60 to the lower side of the lower edge of the vertically long window hole 60.

  Further, the third scale 70 from the top of the scale 70 is formed thicker than the other scales 70, and the upper limit position of the deflection amount of the coil spring 30 can be confirmed by the third scale 70. Thereby, when the lower end of the lower rubber seat 40 with the washer is positioned above the third scale 70, the vibration isolator 1 is excessively loaded, so the lower end of the lower rubber seat 40 with the washer is By monitoring whether it is positioned below the third scale 70, the proper state of the vibration isolator can be confirmed.

  According to the housing 10 formed in this way, the front end side and the left and right sides of the plate-like base portion 14 are opened, and the vertical portion 13 is bent at the two sides of the triangular projection portion 15. Can be widened, and the strength of the vertical portion 13 can be increased. In addition, a notch 17 is provided across the bent portion 16, and reinforcing ribs 18 are formed on the two sides of the triangular protrusion 15 and the both sides of the vertical portion 13 in the bent portion 16. In addition, the strength of the housing 10 provided with the vertical window hole 60 can be improved. Further, a vertical window hole 60 is provided on the line connecting the tips of the triangular protrusions 15 of the upper mounting part 11 and the lower mounting part 12 in the vertical part 13, and on both sides of the opening edge in the vertical direction of the vertical window hole 60. By forming the scale 70 for checking the load, the range for checking the scale 70 for checking the load can be widened.

  The upper rubber seat 20 is formed of, for example, chloroprene rubber, and as shown in FIG. 5, a disk-like upper locking portion 21 that locks to the upper surface of the upper mounting portion 11, and the upper mounting portion 11. The lower locking portion 22 having a disk shape larger than the upper locking portion 21 locked to the lower surface of the upper locking portion 21 and the outer diameter of the upper locking portion 21 formed between the upper and lower locking portions 21 and 22. Disc-shaped fitting portion 23 having a small diameter, a frustoconical upper taper portion 24 protruding from the upper surface of the upper locking portion 21, and a columnar spring receiving portion 25 depending from the lower surface of the lower locking portion 22. And a lower tapered portion 26 having a reverse frustoconical shape that hangs down from the lower surface of the spring receiving portion 25, and a through hole 20a extending in the vertical direction through which the upper suspension bolt 4 can be inserted is provided at the center.

  When the upper taper portion 24 of the upper rubber seat 20 formed in this way is inserted into the attachment hole 11a of the upper attachment portion 11 from below, the upper taper portion 24 and the upper locking portion 21 are compressed and deformed from the attachment hole 11a. After projecting to the upper surface side of the upper mounting portion 11, the original shape is restored. As a result, the fitting portion 23 is fitted into the attachment hole 11 a, the upper attachment portion 11 is sandwiched between the upper engagement portion 21 and the lower engagement portion 22, and the upper rubber seat 20 is attached to the upper attachment portion 11. To be attached.

  The spring receiving portion 25 is formed to have a slightly larger diameter than the inner diameter of the coil spring 30. Therefore, when the lower tapered portion 26 and the spring receiving portion 25 are inserted into the upper end portion of the coil spring 30, the spiral inner peripheral portion of the coil spring 30 bites into the spring receiving portion 25, and the coil spring 30 becomes the upper rubber seat. It is fixed to the upper mounting part 11 via 20.

  The lower rubber seat 40 with a washer includes a rubber seat body 41 formed of, for example, chloroprene rubber, and a flat washer 42 attached to the lower surface of the rubber seat body 41. In this case, as shown in FIG. 5, the rubber seat body 41 includes a substantially flat cylindrical nut receiving portion 43, a cylindrical spring receiving portion 44 extending upward from the upper surface of the nut receiving portion 43, and a spring receiving portion. A through-hole 40a extending in the vertical direction through which the upper suspension bolt 4 can be inserted is provided at the center.

  A circular recess 46 that opens downward is formed in the nut receiving portion 43, and a circumferential groove 47 is provided around the inner peripheral wall of the circular recess 46, and a plain washer 42 is fitted into the circumferential groove 47. It is inserted.

  The spring receiving portion 44 is formed to have a slightly larger diameter than the inner diameter of the coil spring 30. For this reason, when the tapered portion 45 and the spring receiving portion 44 are inserted into the lower end portion of the coil spring 30, the spiral inner peripheral portion of the coil spring 30 bites into the spring receiving portion 44, and the coil spring 30 is a lower portion with a washer. It is fixed to the upper mounting part 11 via the rubber seat 40.

  The lower suspension bolt 5 is inserted from above into the attachment hole 12 a provided in the lower attachment portion 12 of the housing 10, and the projecting screw portion 5 a of the lower suspension bolt 5 is inserted through a plain washer 52. The fixing nuts 51a and 51b are screwed together.

  Next, a procedure for attaching the vibration isolator 1 will be described with reference to FIG. First, as shown in FIG. 6A, the upper suspension bolt 4 is inserted from above through the through hole 20a of the upper rubber seat 20, the spiral inner side of the coil spring 30, and the through hole 40a of the lower rubber seat 40 with washer. Then, the fixing nuts 50a and 50b are screwed to the tip screw portion 4a of the upper suspension bolt 4 protruding from the lower surface of the lower rubber seat 40 with a washer. At this time, the fixing nuts 50a and 50b are set so that the thread portion 4a at the tip of the upper suspension bolt 4 can be seen through two or three peaks.

  As described above, the vibration isolator 1 is suspended by the upper suspension bolt 4 suspended from the ceiling side support portion 3 by screwing the fixing nuts 50a and 50b to the tip screw portion 4a of the upper suspension bolt 4. Is done. In this state, the fixing nuts 51a and 51b are screwed to the protruding end screw portion 5a of the lower suspension bolt 5 inserted in advance in the mounting hole 12a of the lower mounting portion 12 of the housing 10 via the plain washer 52. Keep it. And as shown in FIG.6 (b), the forked part 6a provided in the bracket 6 protrudingly provided from the corner | angular part of the air conditioner 2 is inserted between the lower surface of the lower attachment part 12, and the plain washer 52. Then, after the lower suspension bolt 5 is inserted into the bifurcated portion 6a, the fixing nuts 51a and 51b are tightened to fix the vibration isolator 1 and the bracket 6 (see FIG. 6C).

  In this manner, the brackets 6 projecting from the four locations of the air conditioner 2 are fixed to the vibration isolator 1 and temporarily suspended below the ceiling side support portion 3 via the four upper suspension bolts 4. To do. In this state, the operator hangs upward while looking at the vertical window holes 60 provided in each vibration isolator 1 and the load confirmation scales 70 formed on both sides of the opening edges in the vertical direction of the vertical window holes 60. Adjusting the tightening amount of the fixing nuts 50a, 50b screwed to the tip threaded portion 4a of the bolt 4 and adjusting the height (inclination) of the air conditioner 2 caused by the deflection due to different load loads, the air conditioner 2 is leveled. To.

  According to the vibration isolator 1 of the said embodiment, since it can check with the vertical window hole 60 provided in the vertical part 13 of the housing 10, and the scale 70 for load confirmation, while being able to attain compactification with few components, By using the coil spring 30 in consideration of the safety factor, it is possible to easily perform horizontal adjustment of the height difference of the air conditioner 2 caused by deflection due to different load loads, and to improve the assembly workability.

  Moreover, since the open side of the housing 10 can be widened, the height and leveling work of the air conditioner 2 can be facilitated. Further, the strength of the vertical portion 13 can be increased, the bending of the housing 10 can be facilitated, and the strength of the housing 10 provided with the vertical window holes 60 can be improved. The housing 10 can be made compact. Further, a vertical window hole 60 is provided on the line connecting the tips of the triangular protrusions 15 of the upper mounting part 11 and the lower mounting part 12 in the vertical part 13, and on both sides of the opening edge in the vertical direction of the vertical window hole 60. By forming the scale 70 for checking the load, the range for checking the scale 70 for checking the load can be widened, so that the height and leveling work of the air conditioner 2 can be further easily performed. The attachment workability can be improved.

  In addition, although the said embodiment demonstrated the case where the vibration isolator 1 which concerns on this invention was applied for the suspension of the air-conditioning apparatus 2, not only the air-conditioning apparatus 2 but the other suspended objects It may be a body. For example, as shown in FIG. 7, the piping duct 2A is suspended by the lower suspension bolt 5A attached to the lower attachment portion 12 of the vibration isolator 1 attached to the upper suspension bolt 4 suspended from the ceiling side support portion 3. The same applies to the case of holding. In this case, the pipe thread 2 </ b> A is suspended by screwing the tip thread portion 5 a of the lower suspension bolt 5 to the holding band 7 that holds the pipe duct 2 </ b> A.

  Moreover, in the said embodiment, the housing 10 is formed with the rectangular plate-shaped base part 14 and the triangular protrusion part 15 extended in the horizontal direction from one side of this plate-shaped base part 14, and the vertical part 13 is attached to upper side. Although the case where it bent and formed from the two sides of the triangular protrusion part 15 of the part 11 and the lower attachment part 12 was demonstrated, the shape of the housing 10 is not necessarily limited to this shape. For example, the tip of the plate-like base may be formed in an arc shape. The housing 10 has an upper mounting portion 11, a lower mounting portion 12, and a vertical portion 13 that are bent, a notch 17 is formed across the bending portion 16, and the upper mounting portion 11 and Other shapes may be used as long as the reinforcing ribs 18 are formed on both sides of the lower mounting portion 12 and both sides of the vertical portion 13.

1 Vibration isolator 2 Air conditioner (suspended body)
2A Piping duct (suspended object)
3 Ceiling side support part 4 Upper suspension bolt (Upper suspension material)
4a Screw part 5, 5A Lower suspension bolt (lower suspension material)
5a Threaded portion 10 Housing 11 Upper mounting portion 11a Mounting hole 12 Lower mounting portion 12a Mounting hole 13 Vertical portion 14 Plate-like base portion 15 Triangular protrusion portion 16 Bending portion 17 Notch 18 Reinforcement rib 20 Upper rubber seat 20a Through hole 30 Coil Spring 40 Lower rubber seat 40a with washer Through hole 41 Rubber seat body 42 Flat washers 50a, 50b Fixing nuts 51a, 51b Fixing nut 60 Vertical elongated window hole 70 Scale for load confirmation

Claims (1)

An upper attachment portion for attaching the upper suspension material suspended from the ceiling side support portion, a lower attachment portion for attaching the lower suspension material for suspending the suspended body, and the upper attachment portion and the lower attachment portion A housing composed of a vertical portion that connects opposite sides of each other,
An upper rubber seat having a through hole to be attached to a mounting hole provided in the upper mounting portion;
A coil spring having one end attached to the upper rubber seat;
A lower rubber seat with a washer having a through hole attached to the other end of the coil spring;
A ceiling-suspended vibration isolator comprising a fixing nut screwed to a tip screw portion of the upper suspension member passing through the upper rubber seat, the coil spring, and a lower rubber seat with a washer,
The upper mounting portion and the lower mounting portion are formed by a rectangular plate-shaped base portion having a mounting hole in the center, and a triangular protrusion extending in a horizontal direction from one side of the plate-shaped base portion, and the vertical portion. Is bent from two sides of the triangular protrusion of the upper attachment portion and the lower attachment portion, and a notch is provided across the bending portion on the tip side of the triangular protrusion, and the bending portion Reinforcing ribs are formed on two sides of the triangular projection and both sides of the vertical portion, and the washer is on a line connecting the tips of the triangular projections of the upper mounting portion and the lower mounting portion in the vertical portion. A vertically long window hole that can confirm the position of the attached lower rubber seat is provided, and a load confirmation scale is formed on both sides of the opening edge in the vertical direction of the vertically long window hole.
A ceiling-suspended vibration isolator characterized by that.

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