JP2019100441A - Isolator - Google Patents

Abstract

To improve assembly workability in an isolator.SOLUTION: An isolator 5 includes: a lower case member 6 opening upward; an upper case member 7 disposed above the lower case member 6 so as to be spaced away therefrom and opening downward; a coil spring 8 housed between the case members 6, 7; and a pair of annular upper and lower surging prevention members 9, 9 disposed so as to contact with upper and lower end parts of the coil spring and formed by elastic bodies. An annular lower extension part 65 extending upward is formed at a bottom part 61 of the lower case member 6, and an annular upper extension part 75 extending downward is formed at a ceiling part 71 of the upper case member 7. The upper surging prevention member 9 and the upper end part of the coil spring 8 are fitted in the upper extension part 75. The lower surging prevention member 9 and the lower end part of the coil spring 8 are fitted in the lower extension part 65.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an isolator.

  Conventionally, for example, when an outdoor unit (vibration source) having a compressor in an air conditioner is installed on a foundation, a base frame formed of a rectangular frame disposed on the installation surface, and the base frame An anti-vibration table is used which has the same rectangular frame and has a mount on which the outdoor unit is placed and fixed on the upper surface, and a plurality of isolators are interposed between the two to connect them. For example, as disclosed in Patent Document 1, the above-described isolator includes a coil spring for supporting the load of the outdoor unit, and the elastic deformation of the coil spring absorbs vibration or noise of the outdoor unit or transmits the vibration or noise. It is supposed to curb.

  Further, in the isolator of Patent Document 1 described above, a coil spring is provided inside a cylindrical spring case (upper and lower case members) which is divided up and down, and a loop of the coil spring to prevent natural vibration of the coil spring itself. And a ring rubber (surging prevention member) made of an elastic body provided so as to come in contact with the inside from the inside. As a result, it is possible to prevent the position of the isolator from being displaced or the attitude from being broken due to the vibration accompanying the operation of the compressor, and also to absorb the vibration in the high frequency region.

Patent No. 4355539

  By the way, in the thing of patent document 1, the holder for fixation is arrange | positioned so that the diameter top may be extended in the bottom part of lower spring case from one outer peripheral end to the other outer peripheral end. By straddling in the width direction, the isolator is held by the base frame. When assembling this isolator, the fixing holder is inserted from the side of the ring portion of the ring rubber, and the central portion of the fixing holder is engaged with the lower end of the ring rubber. Then, the ring rubber is inserted into the inside of the coil spring from the lower side of the coil spring, and when the upper end of the ring rubber reaches the upper end of the coil spring, the upper end of the ring rubber is provided on the upper spring case The upper spring case and the lower spring case are connected by being pinched by being pinched by the claws.

  As described above, when the ring rubber is inserted into the inside of the coil spring, the ring rubber must be gradually inserted from under the coil spring, so the assembling workability is poor.

  In addition, since the upper and lower spring cases are connected via the ring rubber by sandwiching the ring rubber between the claws of the upper spring case, the assembly workability is poor also in this point.

  The present invention has been made in view of the foregoing, and an object thereof is to improve the assembling workability of an isolator in which a coil spring is accommodated between a pair of upper and lower case members.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a lower case member opening upward, and an upper case member spaced apart above the lower case member and opening downward. And a coil spring housed between the case members, and a pair of upper and lower annular surging preventing members made of an elastic body, each of which is disposed so as to be in contact with the upper and lower end portions of the coil spring. An annular lower extension extending upward is formed at the bottom of the lower case member, and an annular upper extension extending downward is formed at the ceiling of the upper case member. The upper surging prevention member and the upper end of the coil spring are fitted in the upper extension, and the lower surging prevention member and the lower end of the coil spring are fitted in the lower extension. Are characterized by That.

  According to the above configuration, the upper ends of the upper surging prevention member and the coil spring are fitted to the upper extension of the upper case member, and the lower ends of the lower surging prevention member and the coil spring are the lower case. Since the lower extension of the member is fitted, the isolator can be assembled by a relatively simple operation of fitting, and the assembling workability of the isolator can be improved.

  In a second invention, in the first invention, the lower case member is an annular lower peripheral wall extending upward from an outer peripheral edge of the bottom in addition to the bottom and the lower extension. And the lower extension is disposed radially inward of the lower circumferential wall, and the upper case member is added to the ceiling and the upper extension, and the outer peripheral edge of the ceiling An annular upper peripheral wall extending downward from the lower part, the upper extension extending radially inwardly of the upper peripheral wall, and the upper surging preventing member and the upper end of the coil spring In this order, the lower extension part is externally fitted with the upper extension part, and the lower end of the lower surging prevention member and the lower end of the coil spring are fitted with the lower extension part in this order.

  According to the above configuration, the upper end portions of the upper surging prevention member and the coil spring are externally fitted to the upper extension portion of the upper case member in this order, and the lower end portions of the lower surging prevention member and the coil spring are Since the lower case member of the lower case member is externally fitted in this order, the isolator can be assembled by a relatively simple operation of the external fitting, and the assembling workability of the isolator can be improved.

  In a third invention, in the second invention, a circumferentially extending projection is formed on at least one of the outer peripheral surface of each extension or the inner peripheral surface and the outer peripheral surface of each of the surging preventing members. It is characterized by

  According to the above configuration, the circumferentially extending projection is formed on the outer peripheral surface of each extension or at least one of the inner peripheral surface and the outer peripheral surface of each surging prevention member. When the load applied to the outside in the opposite direction of the lower case member acts, movement of the coil springs to the outside in the opposite direction of the case members can be restricted by the projection. Therefore, it is possible to suppress disassembly of the isolator by disengaging the coil spring from each case member when transporting the isolator or before assembling the isolator.

  A fourth invention is characterized in that in the third invention, the projection is disposed closer to the center in the vertical direction of the coil spring than a portion of the first winding from the end of the coil spring.

  According to the above configuration, the projection is disposed closer to the center in the vertical direction of the coil spring than the first turn from the end of the coil spring. Therefore, when the coil spring is externally fitted to the anti-surge member, at least The portion of the first turn from the end of the coil spring passes over the portion of the anti-surging member corresponding to the projection, and the feel of the overcoming is transmitted to the worker. Therefore, the operator can recognize that the coil spring is externally fitted to the anti-surge member by the touch, and the assembling workability of the isolator can be further improved.

  A fifth invention is characterized in that, in the third or fourth invention, a plurality of the protrusions are provided intermittently in the circumferential direction.

  According to the above configuration, since the plurality of protrusions are provided intermittently in the circumferential direction, when the surging prevention member is externally fitted to the extension, the protrusions are continuous over the entire circumferential direction. The resistance received by the worker can be reduced as compared with the case where it is provided in. Therefore, the surging prevention member can be easily externally fitted to the extension portion, and the assembling workability of the isolator can be further improved.

  In a sixth invention according to any one of the third to fifth inventions, the projection is formed on the outer peripheral surface of each extension, and at least at least the inner peripheral surface and the outer peripheral surface of each of the surging preventing members. An axially extending projection is formed on one side, and the projection of the extension and the projection of the anti-surge member corresponding to the extension are at mutually different positions in the circumferential direction. It is characterized by being arranged.

  According to the above configuration, the projection is formed on the outer peripheral surface of each extension, and an axially extending projection is formed on at least one of the inner peripheral surface and the outer peripheral surface of each of the surging preventing members. Since the protrusions of the extension and the protrusions of the respective anti-surge members corresponding to the extensions are arranged at mutually different positions in the circumferential direction, they correspond to the protrusions of the extension in the anti-surging member. In addition to the parts to be cut, the protrusions of the anti-surging member itself also contact the coil spring, and the contact area between the anti-surging member and the coil spring is increased compared to the case where the anti-surging member itself does not have protrusions. It can be fully demonstrated.

  In a seventh invention according to any one of the first to sixth inventions, the bottom portion of the lower case member and the ceiling portion of the upper case member are made of an elastic body and are different from the surging prevention member. It is characterized in that the anti-slip members of the body are embedded respectively.

  By the way, when the surging prevention member and the slip prevention member are integrated, it is conceivable to insert the slip prevention member into the through holes provided in the bottom of the lower case member and the ceiling of the upper case member, In that case, when fitting the surging prevention member to the extension part, the fitting operation needs to be performed while confirming the insertion position of the slip prevention member.

  Here, according to the configuration of the seventh aspect of the invention, the anti-slip members separate from the anti-surge members, which are elastic bodies, are embedded in the bottom of the lower case member and the ceiling of the upper case member. Therefore, when the anti-surge member is fitted to the extension part, the fitting operation can be performed independently without confirming the embedded position of the anti-slip member, thereby further improving the assembly operation of the isolator. be able to.

  As described above, according to the present invention, assembly workability of the isolator can be improved.

It is a front view of the vibration-proof stand which attached the isolator which concerns on Embodiment 1 of this invention. It is a top view of the vibration-proof stand which attached the isolator. It is a perspective view of an isolator. It is an IV-IV arrow directional cross-sectional view of FIG. FIG. 5 is a cross-sectional view taken along line V-V in FIG. It is an exploded perspective view of an isolator. It is the FIG. 6 equivalent view which shows Embodiment 2. FIG. It is the FIG. 4 equivalent view which shows Embodiment 3. FIG. It is the FIG. 4 equivalent view which shows Embodiment 4. FIG.

  Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of the embodiments is merely exemplary in nature and is not intended to limit the present invention, its applications, or its applications.

First Embodiment
1 and 2 show a vibration isolation table A according to an embodiment of the present invention, and this vibration isolation table A is based on, for example, an outdoor unit (not shown) incorporating a compressor in an air conditioner as a vibration source. It is used when installing on the side installation surface. The anti-vibration table A is formed by combining approximately four elongated metal frames 10, 10, ... in a rectangular frame, and the base 1 is fixed on the installation surface by a base bolt or the like not shown. A frame 2 which is a rectangular frame having substantially the same shape as the base 1 and which is disposed on the base 1 so as to overlap at predetermined intervals and viewed from above, and the frame 2 is spaced above the base 1 A plurality of (six in the illustrated example) isolators 5, 5,... Elastically supported, and a plurality of (four in the illustrated example) stopper mechanisms 3, 3,... Restricting upward movement of the gantry 2 And the outdoor unit is mounted on the mount 2 and fixed. Note that the stopper mechanisms 3, 3,... Are disposed in the respective corner portions of the base 1 (the gantry 2).

  Further, the isolators 5, 5... Are arranged at predetermined intervals in the circumferential direction of the base 1 and the mount 2, that is, in the longitudinal direction of the frames 10, 10,. The respective isolators 5 are placed on the frames 10, 10,... Of the base 1 (for convenience, the upper surface of the frame 10 and the lower surface of the isolator 5 are vertically separated as shown in FIG. And a substantially cup-shaped lower case member 6 that opens upward, and is concentrically disposed above the lower case member 6 in a spaced-apart manner, and opens downward and its lower end opening. And the upper case member 7 having a substantially cup-like shape whose inner diameter is smaller than the upper end opening of the lower case member 6 and the two case members 6 and 7 are concentrically disposed between the two case members 6 and 7 The anti-surge members 9, 9 comprising a pair of upper and lower rubber elastic bodies which are accommodated and receive the load of the outdoor unit and which are fitted into the loops 8a, 8a, ... of the coil spring 8 from the inside. To prepare To have.

  The lower case member 6 of the isolator 5 is a resin molded product in this embodiment. The lower case member 6 has a bottomed cylindrical shape with a bottom 61 and an annular lower peripheral wall 62 extending upward from the outer peripheral edge of the bottom 61, and has a holding portion 12 at its lower portion. Are integrally formed. The holding portion 12 holds the upper portions of the frames 10, 10,... Of the base 1 in the width direction (left and right direction in FIG. 4). A through hole 6a having a circular cross section is formed in a substantially central portion of the bottom portion 61 of the lower case member 6, and an annular portion 6b is disposed radially outside thereof. Three arc-shaped concave portions 6 c and three through holes 6 d are alternately formed circumferentially on the radially outer side of the annular portion 6 b. The recesses 6 c are arranged at equal intervals in the circumferential direction, and the through holes 6 d are disposed between the recesses 6 c and 6 c adjacent in the circumferential direction.

  A substantially annular anti-slip member 11 made of a rubber elastic material is superimposed on the bottom portion 61 of the lower case member 6 from below, and is fixed to the recess 6 c in an internally fitted state. The lower portion of the anti-slip member 11 protrudes from the lower surface of the bottom portion 61 of the lower case member 6, and the upper surface of the base 1 is brought into contact with the lower surface of the lower anti-slip member 11 It is held so as not to.

  An annular lower extension portion 65 extending upward from the annular portion 6 b is integrally formed on the bottom portion 61 of the lower case member 6. That is, the lower extending portion 65 is concentrically arranged radially inward of the lower peripheral wall portion 62. On the outer peripheral surface of the lower extending portion 65, three protruding portions 66, 66, 66 in the shape of ridges extending at equal intervals in the circumferential direction are disposed. That is, the protrusions 66 are disposed intermittently in the circumferential direction. The protrusion 66 is disposed above the lower end of the coil spring 8 and above the first turn loop 8 a (closer to the center in the vertical direction of the coil spring 8). The protrusion 66 is disposed at substantially the same position as the through hole 6 d in the circumferential direction, and the radial and circumferential lengths of the protrusion 66 are smaller than the lengths in the radial and circumferential directions of the through hole 6 d. There is. Thus, by making the size of the protrusion 66 smaller than the size of the through hole 6 d, the portion corresponding to the protrusion 66 of the mold for molding the lower case member 6 including the protrusion 66 is the through hole 6 d You can pull it out.

  The upper case member 7 of the isolator 5 is also a resin molded product in this embodiment. The upper case member 7 has a height twice as high as that of the lower peripheral wall 62 of the lower case member 6, and has a ceiling 71 and an annular shape extending downward from the outer peripheral edge of the ceiling 71. It is a covered cylindrical thing which has the upper peripheral wall part 72 and. An annular tapered portion 7a consisting of a tapered surface which gradually spreads downward from the upper end portion is formed on substantially the upper half of the upper peripheral wall portion 72, and on the lower substantially half, from the lower end of the tapered portion 7a. An annular extension 7b extending straight downward is integrally formed. At the lower part of the outer peripheral surface of the extension 7b, a projection 7c in the form of a ridge is formed continuously over the entire circumferential direction of the extension 7b.

  Further, as shown in FIG. 3, in the ceiling portion 71 of the upper case member 7, a through hole 7 d of a circular cross section is formed at a substantially central portion surrounding the vertical axis, and an annular portion 7 e is disposed radially outside thereof. It is set up. Three arc-shaped recesses 7 f and three through holes 7 g are alternately formed circumferentially on the radially outer side of the annular portion 7 e. The recesses 7 f are disposed at equal intervals in the circumferential direction, and the through holes 7 g are disposed between the recesses 7 f and 7 f adjacent in the circumferential direction.

  Then, as shown in FIG. 4, a substantially annular anti-slip member 11 made of a rubber elastic material is superimposed on the ceiling portion 71 of the upper case member 7 from the upper side, and fixed in the recess 7f in an internally fitted state It is done. The upper portion of the anti-slip member 11 protrudes from the upper surface of the ceiling portion 71 of the upper case member 7, and the lower surface of the gantry 2 is brought into contact with the upper surface of the upper anti-slip member 11. I am supposed to receive it.

  In the ceiling portion 71 of the upper case member 7, an annular upper extension 75 is integrally formed extending downward from the outer peripheral edge of the annular portion 7e. That is, the upper extending portion 75 is concentrically disposed radially inward of the upper peripheral wall portion 72. On the outer peripheral surface of the upper extending portion 75, three protruding portions 76, 76, 76 extending at equal intervals in the circumferential direction are disposed. That is, the protrusions 76 are disposed intermittently in the circumferential direction. The protrusion 76 is disposed below the first turn loop 8a from the upper end of the coil spring 8 (closer to the center in the vertical direction of the coil spring 8). The protrusion 76 is disposed substantially at the same position as the through hole 7g in the circumferential direction, and the length in the radial and circumferential directions of the protrusion 76 is smaller than the length in the radial and circumferential directions of the through hole 7g. There is. Thus, by making the size of the protrusion 76 smaller than the size of the through hole 7g, the portion corresponding to the protrusion 76 of the mold for molding the upper case member 7 including the protrusion 76 is obtained from the through hole 7g It can be pulled out.

  The anti-surging member 9 is for preventing resonance (surging) of the coil spring 8 itself. As shown in FIGS. 4 and 5, the lower surging prevention member 9 is annular, and the inner peripheral surface thereof abuts on the outer peripheral surface of the lower extension portion 65 of the lower case member 6, and the lower end surface thereof is , And the upper surface of the bottom portion 61 of the lower case member 6. The lower surging prevention member 9 is disposed concentrically with the lower extension portion 65, and the vertical length of the lower surging prevention member 9 is the same as the vertical length of the lower extension portion 65.

  As shown in FIG. 6, on the outer peripheral surface of the lower surging prevention member 9, there are formed three projecting portions 91 in the form of protrusions extending in the axial direction at equal intervals in the circumferential direction. As shown in FIG. 5, the protrusion 91 of the lower surging prevention member 9 and the protrusion 66 of the lower extension 65 are disposed at mutually different positions in the circumferential direction. Specifically, the protrusions 91 of the lower surging prevention member 9 are between the protrusions 66 and 66 of the lower extension 65 adjacent to each other in the circumferential direction, and among the protrusions 66 and 66, It is arranged close to one side. When the lower surging preventing member 9 is externally fitted to the lower extending portion 65, a portion of the lower surging preventing member 9 corresponding to the projection 66 of the lower extending portion 65 bulges. The lower surging preventing member 9 sufficiently contacts the coil spring 8 by the bulging portion 93. In addition, in FIG. 4, in order to make a figure intelligible, illustration of the bulging part 93 is abbreviate | omitted.

  The upper surging preventing member 9 is also annular like the lower surging preventing member 9, and as shown in FIG. 4, the inner peripheral surface abuts on the outer peripheral surface of the upper extending portion 75 of the upper case member 7, The upper end surface is in contact with the lower surface of the ceiling portion 71 of the upper case member 7. The upper surging preventing member 9 is disposed concentrically with the upper extending portion 75, and the vertical length of the upper surging preventing member 9 is the same as the vertical length of the upper extending portion 75.

  Similarly to the lower surging prevention member 9, three projections 91 in the form of axially extending ridges are formed on the outer circumferential surface of the upper surging prevention member 9 at equal intervals in the circumferential direction. The protrusion 91 of the upper surging preventing member 9 and the protrusion 76 of the upper extension 75 are disposed at mutually different positions in the circumferential direction. Specifically, the protrusion 91 of the upper surging prevention member 9 is between the protrusions 76, 76 of the upper extension 75 adjacent in the circumferential direction, and one side of the protrusions 76, 76. It is arranged close to. When the upper surging preventing member 9 is externally fitted to the upper extending portion 75, a portion of the upper surging preventing member 9 corresponding to the projection 76 of the upper extending portion 75 bulges. The upper surging preventing member 9 sufficiently contacts the coil spring 8 by the bulging portion 93. In FIG. 4, the bulging portion 93 is not shown in order to make the drawing easy to understand.

  As shown in FIG. 4, the coil spring 8 is accommodated between both case members 6, 7, and arranged so that a pair of upper and lower surging preventing members 9, 9 are in contact from the inside in the loop 8a at both ends thereof. ing.

  The isolator 5 configured as described above externally fits the lower surging prevention member 9 and the lower end portion of the coil spring 8 to the lower extension portion 65 of the lower case member 6 in this order as shown in FIG. In addition, the upper end portions of the upper surging preventing member 9 and the coil spring 8 are externally fitted to the upper extending portion 75 of the upper case member in this order, and the bottom portion 61 of the lower case member 6 and the ceiling portion of the upper case member 7 It is assembled by embedding the anti-slip members 11 in 71 respectively.

-Effect-
As described above, according to the present embodiment, the upper end portions of the upper surging prevention member 9 and the coil spring 8 are externally fitted to the upper extension portion 75 of the upper case member 7 in this order, and the lower surging prevention member 9 Since the lower end portion of the coil spring 8 is externally fitted to the lower extending portion 65 of the lower case member 6 in this order, the isolator 5 can be assembled by a relatively simple operation of the external fitting, Assembling workability of the isolator 5 can be improved.

  Further, since the protruding portions 66 and 76 extending in the circumferential direction are formed on the outer peripheral surface of each of the extending portions 65 and 75, the load applied to the outside of the opposing direction of both case members 6 and 7 is applied to the isolator 5 When it acts, movement to the opposite direction outside of both case members 6 and 7 can be regulated by projection parts 66 and 76. Therefore, it is possible to suppress disassembly of the isolator 5 by disengaging the coil spring 8 from the case members 6 and 7 when transporting the isolator 5 or before assembling the isolator 5 to the vibration isolation table A.

  Further, since the projections 66 and 76 are arranged closer to the vertical center of the coil spring from the end of the coil spring 8 than the loop 8a of the first turn, when the coil spring 8 is externally fitted to the surging prevention member 9 At least from the end of the coil spring 8, the loop 8a of the first turn passes over the portion of the anti-surge member 9 corresponding to the protrusions 66 and 76, and the feel of the overtaking is transmitted to the operator. Therefore, the operator can recognize that the coil spring 8 is externally fitted to the surging prevention member 9 by the touch, and the assembling workability of the isolator 5 can be further improved.

  Further, since three projections 66 and 76 are intermittently provided in the circumferential direction, when the surging prevention member 9 is externally fitted to the extension parts 65 and 75, the projections 66 and 76 extend all around the circumferential direction. The resistance to the worker can be reduced as compared with the case where they are provided continuously around the circumference. Therefore, the surging prevention member 9 can be easily fitted to the extension parts 65 and 75, and the assembling workability of the isolator 5 can be further improved.

  Further, the protrusions 66 and 76 are formed on the outer peripheral surface of each of the extension portions 65 and 75, and the protrusions 91, 91 and 91 extending in the axial direction are formed on the outer peripheral surface of each of the surging preventing members 9 The protrusions 66 and 76 of the extending portions 65 and 75 and the protrusions 91, 91 and 91 of the respective surging preventing members 9 corresponding to the extending portions 65 and 75 are arranged at mutually different positions in the circumferential direction. Therefore, in addition to the portions of the extension portions 65 and 75 corresponding to the protrusions 66 and 76 in the anti-surge member 9, the protrusions 91, 91 and 91 of the anti-surge member 9 itself are in contact with the coil spring 8 and surging The contact area between the surging prevention member 9 and the coil spring 8 is increased as compared with the case where the prevention members 9 themselves do not have the protrusions 91, 91, 91, and the surging prevention function can be sufficiently exhibited.

  By the way, when the surging prevention member 9 and the slip prevention member 11 are integrated, the through holes 6d and 7g disposed in the bottom portion 61 of the lower case member 6 and the ceiling portion 71 of the upper case member 7 are slip prevention members. 11 is considered to be inserted. In that case, when the surging prevention member 9 is externally fitted to the extension portions 65 and 75, it is necessary to perform the outside fitting operation while confirming the insertion position of the slip prevention member 11 There is.

  Here, according to the configuration of the above embodiment, the bottom portion 61 of the lower case member 6 and the ceiling portion 71 of the upper case member 7 are made of an elastic body, and the slip preventing member 11 separate from the surging preventing member 9. Are embedded, so that when the surging prevention member 9 is externally fitted to the extension portions 65, 75, the outside fitting operation is performed independently without checking the embedding position of the slip prevention member 11 And the assembling operation of the isolator 5 can be further improved.

  Moreover, since the surging prevention member 9 is not integral but is separated up and down, it is possible to make it difficult to transmit the vibration from the vibration source to the base side.

  Further, since the upper case member 7 is provided with the protrusion 7 c and one opposite side of the holding portion 12 in the lower case member 6 is formed into a bowed shape, it is rubbed with a packing material etc. It is possible to minimize scratches on the outer peripheral surfaces of the lower case member 6 and the upper case member 7.

Second Embodiment
FIG. 7 shows Embodiment 2 of the present invention. In this embodiment, the same parts as those in FIG. 1 to FIG.

  While the surging prevention member 9 and the slip prevention member 11 are separated in the first embodiment, in the present embodiment, these members are integrally formed. Specifically, three arc-shaped anti-slip members 11 are formed on the lower end surface of the lower side surging prevention member 9 at equal intervals in the circumferential direction. At the lower end portion of each anti-slip member 11, a protruding portion 11a that protrudes outward in the radial direction is formed. Similarly, three upper slip preventing members 11 are formed at the upper end portion of the upper surging preventing member 9, and a protruding portion 11 a is formed at the upper end portion of each of the slip preventing members 11.

  In the bottom portion 61 of the lower case member 6 and the ceiling portion 71 of the upper case member 7, through holes 7h (only the through holes 7h of the upper case member 7 are shown) into which the slip prevention members 11 are inserted The stopper 7i is formed to correspond to the through hole 7h and is circumferentially adjacent to the through hole 7h (only the stopper 7i of the upper case member 7 is shown).

  After the upper slip preventing member 11 is inserted into the through hole 7h of the upper case member 7, when the upper surging preventing member 9 is rotated in the circumferential direction, the stopper 7i and the protrusion 11a are engaged. Thereby, the surging prevention member 9 and the slip prevention member 11 are prevented from coming off in the vertical direction. The lower side anti-slip member 11 is also configured in the same manner to prevent the slippage.

  In the first embodiment, the protrusions 66 and 76 are formed in the extension portions 65 and 75 disposed in the lower and upper case members 6 and 7, respectively. The portions 66 and 76 are not formed. Furthermore, while the protrusions 91 are formed on the outer peripheral surface of the pair of upper and lower surging preventing members 9 in the first embodiment, the protrusions 91 are not formed in the present embodiment.

  The other configuration is the same as that of the first embodiment. Thus, as in the first embodiment, the upper and lower pairs of surging preventing members 9 and the coil spring 8 are externally fitted in this order with the extension portions 65 and 75 of both case members 6 and 7 in this order. It is possible to assemble the isolator 5 by a relatively simple operation such as joining, and the assembling workability of the isolator 5 can be improved.

  Moreover, by integrating the surging prevention member 9 and the slip prevention member 11, the number of components can be reduced.

Embodiment 3
FIG. 8 shows Embodiment 3 of the present invention. In this embodiment, the same parts as those in FIG. 1 to FIG.

  In the first embodiment, the lower end portions of the lower surging prevention member 9 and the coil spring 8 are externally fitted to the lower extension portion 65 in this order, whereas in the present embodiment, the lower surging prevention is performed. The lower end portions of the member 9 and the coil spring 8 are internally fitted to the lower peripheral wall portion 62 in this order. In the present embodiment, the lower peripheral wall 62 corresponds to the lower extension of the present invention.

  Specifically, the lower extension 65 formed in the lower case member 6 in the first embodiment is not formed in the third embodiment. On the inner peripheral surface of the lower peripheral wall portion 62, three protruding portions 66, 66, 66 of a protruding shape are disposed so as to extend at regular intervals in the circumferential direction. That is, the protrusions 66 are disposed intermittently in the circumferential direction. The protrusion 66 is disposed above the lower end of the coil spring 8 and above the first turn loop 8 a (closer to the center in the vertical direction of the coil spring 8). The protrusion 66 is disposed at substantially the same position as the through hole 6 d in the circumferential direction, and the radial and circumferential lengths of the protrusion 66 are smaller than the lengths in the radial and circumferential directions of the through hole 6 d. There is. Thus, by making the size of the protrusion 66 smaller than the size of the through hole 6 d, the portion corresponding to the protrusion 66 of the mold for molding the lower case member 6 including the protrusion 66 is the through hole 6 d You can pull it out.

  The inner circumferential surface of the surging prevention member 9 is in contact with the outer circumferential surface of the coil spring 8. On the inner circumferential surface, there are formed three projecting portions 91 extending in the axial direction at equal intervals in the circumferential direction. The protrusion 91 of the lower surging prevention member 9 and the protrusion 66 of the lower peripheral wall 62 are disposed at mutually different positions in the circumferential direction. Specifically, the projection 91 of the lower surging prevention member 9 is between the projections 66, 66 of the lower peripheral wall 62 adjacent in the circumferential direction, and one of the projections 66, 66 It is placed close to the side. When the lower surging prevention member 9 is fitted inside the lower peripheral wall portion 62, a portion of the lower surging prevention member 9 corresponding to the projection 66 of the lower peripheral wall portion 62 bulges out. The lower surging preventing member 9 sufficiently contacts the coil spring 8 by the bulging portion 93. In FIG. 8, the bulging portion 93 is omitted to make the drawing easy to understand.

  As shown in FIG. 8, the coil spring 8 is accommodated between the two case members 6 and 7, and the outer-to-lower surging preventing member 9 is accommodated in the loop 8a at the lower end thereof in the loop 8a at the upper end. It arrange | positions so that the upper surging prevention member 9 may contact from an inner side.

  In the isolator 5 configured as described above, the lower surging preventing member 9 and the lower end portion of the coil spring 8 are internally fitted in this order to the lower peripheral wall portion 62 of the lower case member 6 and the upper side of the upper case member 7 The upper end portions of the upper surging prevention member 9 and the coil spring 8 are externally fitted to the extension portion 75 in this order, and the slip prevention member 11 is formed on the bottom portion 61 of the lower case member 6 and the ceiling portion 71 of the upper case member 7. It is assembled by burying each.

  The other configuration is the same as that of the first embodiment. Thus, as in the first embodiment, the upper and lower pairs of surging prevention members 9 and the coil spring 8 are internally fitted to the lower peripheral wall portion 62 of the lower case member 6 in this order, and the upper extension of the upper case member 7 By externally fitting the portion 75, the isolator 5 can be assembled by a relatively simple operation of fitting, and the assembling workability of the isolator 5 can be improved.

Fourth Embodiment
FIG. 9 shows Embodiment 4 of the present invention. In this embodiment, the same parts as those in FIG. 1 to FIG. 6 are assigned the same reference numerals and detailed explanations thereof will be omitted.

  In the third embodiment, the upper end portions of the upper surging preventing member 9 and the coil spring 8 are externally fitted to the upper extending portion 75 in this order, while in the present embodiment, the upper surging preventing member 9 and The upper end portion of the coil spring 8 is internally fitted to the upper peripheral wall portion 72 in this order. In the present embodiment, the upper peripheral wall portion 72 corresponds to the lower extending portion of the present invention.

  Specifically, the upper extension 75 formed in the upper case member 7 in the third embodiment is not formed in the fourth embodiment. On the inner peripheral surface of the upper peripheral wall portion 72, three protruding portions 76, 76, and 76 in a protruding shape are disposed so as to extend at equal intervals in the circumferential direction. That is, the protrusions 76 are disposed intermittently in the circumferential direction. The protrusion 76 is disposed below the first turn loop 8a from the upper end of the coil spring 8 (closer to the center in the vertical direction of the coil spring 8). The protrusion 76 is disposed substantially at the same position as the through hole 7g in the circumferential direction, and the length in the radial and circumferential directions of the protrusion 76 is smaller than the length in the radial and circumferential directions of the through hole 7g. There is. Thus, by making the size of the protrusion 76 smaller than the size of the through hole 7g, the portion corresponding to the protrusion 76 of the mold for molding the upper case member 7 including the protrusion 76 is obtained from the through hole 7g It can be pulled out.

  Further, in the third embodiment, the upper peripheral wall portion 72 of the upper case member 7 integrally forms the tapered portion 7a and the extension portion 7b, but in the present embodiment, it is an annular member extending straight downward. It is.

  The inner circumferential surface of the surging prevention member 9 is in contact with the outer circumferential surface of the coil spring 8. On the inner circumferential surface, there are formed three projecting portions 91 extending in the axial direction at equal intervals in the circumferential direction. The protrusion 91 of the upper surging preventing member 9 and the protrusion 76 of the upper peripheral wall 72 are disposed at mutually different positions in the circumferential direction. Specifically, the protrusions 91 of the upper surging prevention member 9 are between the protrusions 76, 76 of the upper peripheral wall 72 adjacent in the circumferential direction, and on one side of the protrusions 76, 76. It is arranged close. When the upper surging preventing member 9 is fitted in the upper peripheral wall portion 72, a portion of the upper surging preventing member 9 corresponding to the projection 76 of the upper peripheral wall portion 72 bulges out. The upper surging preventing member 9 sufficiently contacts the coil spring 8 by the bulging portion 93. In addition, in FIG. 9, in order to make a figure intelligible, illustration of the bulging part 93 is abbreviate | omitted.

  As shown in FIG. 9, the coil spring 8 is housed between both case members 6, 7, and arranged so that the upper and lower pairs of surging preventing members 9, 9 contact the loops 8a at both ends from the outside. There is.

  In the isolator 5 configured as described above, the lower surging prevention member 9 and the lower end portion of the coil spring 8 are internally fitted in this order to the lower peripheral wall portion 62 of the lower case member 6, and the upper peripheral wall of the upper case member The upper end portions of the upper surging preventing member 9 and the coil spring 8 are internally fitted to the portion 72 in this order, and the anti-slip member 11 is embedded in the bottom portion 61 of the lower case member 6 and the ceiling portion 71 of the upper case member 7 respectively. It is assembled by doing.

  The other configuration is the same as that of the third embodiment. Thus, as in the third embodiment, the upper and lower pair of surging preventing members 9 and the coil spring 8 are internally fitted to the peripheral wall portions 62 and 72 of the case members 6 and 7 in this order, thereby the inner fitting The isolator 5 can be assembled with a relatively simple operation, and the assembling workability of the isolator 5 can be improved.

<Other Embodiments>
In the above embodiments, the plurality of protrusions 66 and 76 are intermittently provided in the circumferential direction at the extension portions 65 and 75, but may be formed continuously over the entire circumferential direction. .

  In the above embodiments, the protrusions 66 and 76 are formed on the extension portions 65 and 75 or the peripheral wall portions 62 and 72. However, even if the protrusions 66 and 76 are formed on at least one of the inner peripheral surface and the outer peripheral surface of the surging prevention member 9 Good. Also by this structure, it can suppress that the coiled spring 8 remove | deviates from each case member 6, 7.

  In the above embodiments, the protrusion 91 is disposed closer to one side of the protrusions 66, 66; 76, 76, but as long as the protrusion 91 is positioned between the protrusions 66, 66; For example, it may be disposed in the middle of the protrusions 66, 66; 76, 76.

  Moreover, although the protrusion part 91 was formed in the outer peripheral surface or inner peripheral surface of the surging prevention member 9 in said each embodiment, you may form in the both surfaces. Also by this configuration, the surging prevention function can be sufficiently exhibited.

  Further, in the respective embodiments described above, the protrusion shaped projections 91 are formed on the surging prevention member 9, but as long as the protrusion sections 66, 66; 76, 76 adjacent in the circumferential direction are located, The circumferential length may be larger than that of the first embodiment.

  In the third embodiment, the lower end portions of the lower surging prevention member 9 and the coil spring 8 are internally fitted to the lower peripheral wall portion 62 in this order, and the upper end portions of the upper surging prevention member 9 and the coil spring 8 are In this order, the upper extending portion 75 is externally fitted, but the lower end portions of the lower surging preventing member 9 and the coil spring 8 are externally fitted to the lower extending portion 65 in this order, and the upper surging preventing member 9 and the coil The upper end portion of the spring 8 may be fitted in the upper peripheral wall portion 72 in this order.

5 isolator 6 lower case member 61 bottom 62 lower peripheral wall (lower extension)
65 lower extension 66 protrusion 7 upper case member 71 ceiling 72 upper peripheral wall (upper extension)
75 Upper extension 76 Projection 8 Coil spring 9 Surging prevention member 91 Projection 11 Slip prevention member

Claims (7)

A lower case member that opens upward;
An upper case member spaced apart above the lower case member and opening downward,
A coil spring housed between the two case members;
And a pair of upper and lower annular surging preventing members made of an elastic body, disposed so as to be in contact with the upper and lower end portions of the coil spring, respectively.
An annular lower extension extending upward is formed at the bottom of the lower case member,
An annular upper extension extending downward is formed at the ceiling of the upper case member,
An upper surging prevention member and an upper end portion of the coil spring are fitted to the upper extension portion,
An isolator characterized in that a lower surging preventing member and a lower end portion of the coil spring are fitted to the lower extending portion. In claim 1,
The lower case member has, in addition to the bottom and the lower extension, an annular lower circumferential wall extending upward from the outer peripheral edge of the bottom,
The lower extension is disposed radially inward of the lower peripheral wall,
The upper case member has, in addition to the ceiling portion and the upper extension portion, an annular upper peripheral wall portion extending downward from an outer peripheral edge portion of the ceiling portion,
The upper extension is disposed radially inward of the upper peripheral wall,
The upper surging preventing member and the upper end portion of the coil spring are externally fitted to the upper extending portion in this order,
An isolator characterized in that the lower surging prevention member on the lower side and the lower end portion of the coil spring are externally fitted to the lower side extension in this order. In claim 2,
An isolator characterized in that a projection extending in the circumferential direction is formed on the outer peripheral surface of each of the extension portions or at least one of the inner peripheral surface and the outer peripheral surface of each of the surging preventing members. In claim 3,
The isolator is characterized in that the projection is disposed closer to the center in the vertical direction of the coil spring than the portion of the first turn from the end of the coil spring. In claim 3 or 4,
The isolator is characterized in that a plurality of the protrusions are disposed intermittently in the circumferential direction. In any one of claims 3 to 5,
The projection is formed on the outer peripheral surface of each extension,
An axially extending protrusion is formed on at least one of the inner peripheral surface and the outer peripheral surface of each of the surging preventing members,
An isolator characterized in that the protruding portions of the extending portions and the protruding portions of the surging preventing members corresponding to the extending portions are disposed at mutually different positions in the circumferential direction. In any one of claims 1 to 6,
An isolator characterized in that an anti-slip member which is an elastic body and is separate from the surging preventing member is embedded in a bottom portion of the lower case member and a ceiling portion of the upper case member.

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