JP2009228830A - Vibration isolating mount - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration isolating mount capable of securing a rubber member and an outer cylinder member by arranging an intermediate member between the rubber member and the outer cylinder member. <P>SOLUTION: The intermediate member 3 made of a different resin from the outer cylinder member 4 is installed between the rubber member 1 and the outer cylinder member 4, and the rubber member 1 and the intermediate member 3 are fixed together by the adhesive force which the intermediate member 3 possesses, while the outer cylinder member 4 and the intermediate member 3 are fixed together through fitting of their recesses and projections with one another. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an anti-vibration mount including a central member and an outer cylindrical member made of a resin connected to the periphery thereof via a rubber member, and the rubber member and the outer cylindrical member are securely and inexpensively fixed. About things that can be done.

  FIG. 1 is a perspective view showing an example of a conventional anti-vibration mount called a torque rod or a suspension arm. The anti-vibration mount 90 is composed of a central member 92 and a resin connected to the periphery thereof via a rubber member 91. In the case of a torque rod or a suspension arm, the outer cylinder member 93 is connected to each of the outer cylinder portions 93a connected to the periphery of the pair of central members 92 via rubber members 91. The connecting portion 93b integrally connects these outer tube portions 93a (see, for example, Patent Document 1).

  Such an anti-vibration mount 90 is formed as follows. First, a rubber material is injected into a cavity of a rubber molding die in which the center member 92 is inserted and vulcanized to form a rubber member 91 vulcanized and bonded to the center member 92. Next, the outer peripheral surface of the rubber member 91 is cleaned. Then, an adhesive is applied and dried, and after this is inserted into a resin molding die, a resin material is injected into the cavity and cured to bond the rubber member 91 with the central member 92 and the outer cylinder member 93. The anti-vibration mount 90 is completed.

  The anti-vibration mount 90 formed in this way is composed of a resin in which the outer cylindrical member 93 occupying a major part of the volume is made of resin, so that it is significantly lighter than the conventional one made of metal. In addition, the cost of the outer cylinder member 93 can be reduced.

  Although such an anti-vibration mount has the above-described features, in order to bond the rubber member 91 and the outer cylinder member 93, the outer peripheral surface of the rubber member 91 is cleaned by performing a surface treatment such as degreasing, In addition, a plurality of extra steps such as applying an adhesive thereto and drying it are required, and these steps are costly.

  On the other hand, an intermediate member made of a resin different from the resin of the outer cylinder member 93 is disposed between the rubber member 91 and the resin outer cylinder member 93, and the rubber member 91 and the intermediate member are fixed, and the outer cylinder An anti-vibration mount in which the member 93 and the intermediate member are fixed without an adhesive is disclosed (for example, see Patent Document 1).

Japanese Patent Laid-Open No. 11-13831

  However, in the anti-vibration mount disclosed above, 50% GF reinforced nylon 66 is used as the intermediate member, and this makes it impossible to sufficiently bond the rubber member and the intermediate member. It is difficult to bond the outer cylinder member made of various materials different from this.

The present invention has been made in view of such problems, and by placing an intermediate member made of resin between a rubber member and an outer cylinder member, the rubber member and the outer cylinder member are bonded with an adhesive. An object of the present invention is to provide an anti-vibration mount that can be firmly fixed without being used.

<1> is an anti-vibration mount comprising a central member and an outer cylindrical member made of resin connected to the periphery thereof via a rubber member.
An intermediate member made of a resin different from the outer cylinder member is disposed between the rubber member and the outer cylinder member, and the rubber member and the intermediate member are fixed by an adhesive force of the intermediate member, and the outer cylinder member And an anti-vibration mount in which the intermediate member and the intermediate member are fixed to each other by fitting the concave and convex portions.

  <2> is an anti-vibration mount comprising the resin constituting the intermediate member according to <1> selected from at least one of nylon 12, nylon 612, polyamide alloy, and PPE (polyphenylene ether). It is.

  According to <1>, an intermediate member made of a resin different from the outer cylinder member is disposed between the rubber member and the outer cylinder member, and the rubber member and the intermediate member are bonded to each other by an adhesive force of the intermediate member. Since the outer cylinder member and the intermediate member are fixed by mutual concave and convex fitting, the rubber member and the outer cylinder member can be securely fixed without using an adhesive. As the resin material, it is possible to select an optimum material that matches the characteristics required for the vibration-proof mount without considering the adhesiveness to the rubber member.

  <2> According to <2>, since the resin constituting the intermediate member contains at least one selected from nylon 12, nylon 612, polyamide alloy, and PPE (polyphenylene ether), Adhesiveness can be surely mourned.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a perspective view showing a suspension arm as an anti-vibration mount according to the first embodiment of the present invention. The suspension arm 10 includes a central member 2 and a resin connected to the periphery thereof via a rubber member 1. And an intermediate member 3 made of a resin different from the outer cylinder member 4 is arranged between the rubber member 1 and the outer cylinder member 4. The rubber member 1 and the intermediate member 3 Is fixed by the adhesive force of the intermediate member 3, and the outer cylinder member 4 and the intermediate member 3 are fixed by mutual uneven fitting.

  In the case of the suspension arm 10 described here as an example of the vibration-proof mount, the outer cylinder member 4 includes the outer cylinder portions 93a connected to the periphery of the pair of center members 2 via the rubber members 91, and these The outer cylinder part 93a is integrally connected to a connecting part 93b.

  A specific example of the concave / convex fitting between the outer cylinder member 4 and the intermediate member 3 will be described. As shown in FIG. 3, the outer cylinder member 4 and the intermediate member 3 are arranged along the circumferential direction at the axial center portion of the outer peripheral surface of the cylindrical intermediate member 3. A plurality of protrusions 9 extending in the axial direction and grooves formed on the inner peripheral surfaces of the outer cylinder member 4 corresponding to these protrusions are fitted. In this case, the protrusions 9 is formed only in the central portion excluding both axial ends of the outer peripheral surface of the intermediate member 3, the axial relative displacement between the outer cylinder member 4 and the intermediate member 3 is made zero, and these members 3, The mutual fixation of the four can be ensured.

  In addition, regarding the concave / convex fitting between the outer cylinder member 4 and the intermediate member 3, in the illustrated example, the intermediate member 3 is provided with a ridge and the outer cylinder member 4 is provided with a groove. The intermediate member 3 can be fitted with a ridge and a groove on the intermediate member 3. Furthermore, the unevenness is not limited to a linear shape, and may be a combination of a protrusion and a corresponding hole.

  4 and 5 are perspective views showing the suspension arm being formed. To form the suspension arm 10, the central member 2 is first prepared, and the central member 2 is inserted into the rubber molding die M1. After injecting the rubber material into the cavity space, heat is applied to the rubber material and vulcanized to obtain a rubber member 1 to which the central member 2 is vulcanized and bonded as shown in FIG.

  Next, the rubber member 1 with the central member 2 is taken out from the rubber molding die M1 and inserted into the first resin molding die M2. In the cavity of the first resin molding die M2, a groove is formed on the mold side, and the first resin material that is the material of the intermediate member 3 is injected into the cavity space and cured, whereby FIG. As shown, an intermediate member 3 with a rubber member 1 can be obtained. As shown in the figure, the intermediate member 3 obtained here is provided with a plurality of protrusions 9 formed at positions corresponding to the grooves of the mold M2.

  Subsequently, the intermediate member 3 with the rubber member 1 is taken out from the first resin molding die M2 and inserted into the second resin molding die M3. The second resin molding die M3 has a cavity surface corresponding to the outer contour shape of the suspension arm 10, and is formed between the inserted intermediate member 3 with the rubber member 1 and the cavity surface. A suspension arm 10 as shown in FIG. 3 can be obtained by injecting and curing a second resin material as a material of the outer cylinder member 4 into the cavity space.

  The suspension arm 10 can also be formed by a method other than that described above. In this method, first, as shown in FIG. 6, a second cavity surface having cavity surfaces corresponding to the inner surface shape and the outer surface shape of the intermediate member 3 is formed. The intermediate resin 3 is obtained by injecting the first resin material into the cavity space of one resin molding die M4 and cooling and curing it.

  Next, a rubber material is injected into a rubber molding die M5 in which the intermediate member 3 and the central member 2 are inserted, and the intermediate member 3 with the rubber member 1 shown in FIG. 5 is obtained.

  Thereafter, the intermediate member 3 with the rubber member 1 taken out from the rubber molding die M5 and the central member 2 have a cavity surface corresponding to the outer contour shape of the suspension arm 10 as described above. A suspension arm 10 as shown in FIG. 3 is obtained by inserting into the two-resin molding die M3 and injecting and curing a second resin material as the material of the outer cylinder member 4 into the cavity space. Can do.

  In the vibration isolating mount of the first embodiment described above, as a modification of the means for restraining the axial displacement of the intermediate member 3 with respect to the outer cylindrical member 2, in addition to the configuration described above, FIG. As shown in the cross-sectional view passing through the axial center near the end in the axial direction, the protrusion 9A extends to the axial end of the intermediate member 3A, and instead, the axial length of the outer cylinder member 4A is set to the middle. The length of the member 3A may be larger than the axial length of the member 3A and the end of the member 3A may protrude radially inward. In this case, the axial displacement of the intermediate member 3A may be caused by the protruding portion radially inward of the outer cylinder member 4A. Can be restrained.

  The two forming methods for obtaining the suspension arm 10 have been described above. Here, the resin of the outer cylinder member 4 is a suspension arm 10 as a product regardless of the adhesiveness to the intermediate member 3 and the rubber member 1. For example, if high rigidity and high strength are required, for example, nylon 66, GF (glass fiber) reinforced nylon 66, or the like may be selected. it can.

  On the other hand, the resin material used for the intermediate member 3 preferably contains at least one selected from nylon 12, nylon 612, polyamide alloy, and PPE (polyphenylene ether), and such a material is rubber. It can be firmly bonded by thermal fusion with the material. These materials that can be used for the intermediate member 3 may be glass fiber reinforced or not.

  Next, a second embodiment will be described. FIG. 8 is a cross-sectional view showing a liquid-filled vibration-proof mount used as an engine mount or the like that supports the engine. The engine mount 20 is formed of a central member 22 and an axial direction radially outward of the central member 22. And a rubber member 21 disposed between these members and connecting these members to each other. A partition member 26 is provided on one axial side of the rubber member 21. The main liquid chamber 31 is formed between the partition member 26 and the rubber member 21, and the membrane member 27 is provided on the opposite side of the main liquid chamber 31 with the partition member 26 interposed therebetween. A sub liquid chamber 32 is formed between the partition member 26 and the liquid chambers 31 and 32 are communicated with each other through an orifice 33 formed in the partition member 26.

  The engine mount 20 is characterized in that intermediate members 23 and 24 made of a resin different from the outer cylinder member 25 are disposed between the rubber member 21 and the outer cylinder member 25. The members 23 and 24 are fixed by the adhesive force of the intermediate members 23 and 24, and the outer cylinder member 25 and the intermediate members 23 and 24 correspond to, for example, FIG. As shown in the sectional view, the protrusions 35A formed on the outer peripheral surfaces of the intermediate members 23, 24 at intervals in the circumferential direction and the protrusions 35A on the inner peripheral surface of the outer cylinder member 25 correspond to the protrusions 35A. The groove 36A formed in the position is fixed by mutual concave and convex fitting such as fitting.

  In order to form such an engine mount 20, for example, first, a rubber material is injected into a mold in which the central member 22 is inserted to obtain a rubber member 21 in which the central member 22 is vulcanized and bonded, The intermediate members 23 and 24 are formed separately. Then, the intermediate member 23 is bonded to the rubber member 21 with the center member 22 by welding, and then the intermediate member 24 and the intermediate member 23 are bonded by welding with the partition member 26 interposed therebetween. Finally, the central member 22, the rubber member 21, and the intermediate members 23, 24 are all integrated into a mold for forming the outer cylinder member 25, and a resin material for the outer cylinder member 25 is used. The engine mount 20 can be formed by injecting and bonding them.

  In the above description, the intermediate member 23 is bonded to the rubber member 21 with the central member 22 by welding. Instead, the rubber member 21 with the central member 22 is inserted into the mold for forming the intermediate member 23. Thereafter, the material for the intermediate member 23 may be injected and solidified.

  In addition, the outer cylinder member 25 and the intermediate members 23 and 24 are fixed to the outer circumferential surface of the intermediate members 23 and 24 with a protruding strip 35A formed at intervals in the circumferential direction, and the inner circumferential surface of the outer cylinder member 25. FIG. 9 is a cross-sectional view showing a modified example of the engine mount 20 instead of the concave and convex fitting with the groove 36A formed at a position corresponding to the ridges 35A. As shown in FIG. 10 which is a side view corresponding to the view and FIG. 11 which is a cross-sectional view corresponding to the view taken along the line BB in FIG. A protrusion 39 provided at a position corresponding to the hole 37 at the bottom of the outer cylinder member 25A is inserted into the hole 37 formed to stop the relative displacement in the circumferential direction between the intermediate member 24A and the outer cylinder member 25A. After inserting the protrusion 39 into the hole 37, the protrusion 39 By melting the tip to form a head 39 having a diameter larger than that of the hole 37 and hardening it, the relative displacement in the axial direction between the intermediate member 24A and the outer cylinder member 25A can be stopped, and the intermediate member 24A and the outer cylinder member can be stopped. Thus, 25A can be fixed by concave-convex fitting.

  9 is different from the engine mount 20 shown in FIG. 7 only in the intermediate member 23A, the intermediate member 24A, and the outer cylinder member 25A (the intermediate member 23A includes the intermediate member 23A). In FIG. 9, all members other than the intermediate members 23A and 24A and the outer cylinder member 25A are indicated by the same reference numerals as those shown in FIG.

  In this modification, the outer cylinder member 25A is assembled to the intermediate member 24A by molding the outer cylinder member 25A alone, and then connecting the outer cylinder member 25A to the outside of the already assembled intermediate members 23A and 24A from the upper side in the axial direction. Then, the head 39A may be formed by inserting the hole 37 of the intermediate member 24A so that the protrusion 39 of the outer cylinder member 25A corresponds to the hole 37 and then melting and solidifying the tip of the protrusion 39.

  The anti-vibration mount according to the present invention is not particularly limited as long as it has an outer cylinder member, a center member, and a rubber member. In addition to a torque rod and a suspension arm, various anti-vibration mounts such as an automobile engine mount and a body mount are available. It can be applied to swing mounts.

It is a perspective view which shows a suspension arm as the conventional vibration isolating mount. It is a perspective view which shows the rubber member with a center member in the conventional suspension arm. It is a perspective view which shows a suspension arm as a vibration isolating mount of 1st embodiment which concerns on this invention. It is a perspective view which shows the rubber member with a center member which comprises a suspension arm. It is a perspective view which shows the intermediate member with a rubber member which comprises a suspension arm. It is a perspective view which shows the intermediate member which comprises a suspension arm. It is sectional drawing which shows the axial direction edge part vicinity of the anti-vibration mount in the modification of 1st embodiment. It is sectional drawing which shows an engine mount as an anti-vibration mount of 2nd embodiment. It is sectional drawing corresponding to the AA arrow of FIG. It is sectional drawing which shows the modification of the vibration isolating mount of 2nd embodiment. It is sectional drawing corresponding to the AA arrow of FIG. It is sectional drawing corresponding to the BB arrow of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rubber member 2 Center member 3, 3A Intermediate member 4, 4A Outer cylinder member 9, 9A Projection 10 Suspension arm 20 Engine mount 21 Rubber member 22 Center member 23, 23A Intermediate member 24, 24A Intermediate member 25, 25A Outer cylinder member 26 Partition member 27 Membrane member 31 Main liquid chamber 32 Sub liquid chamber 33 Orifice 35, 35A Projection of intermediate member 36, 36A Groove of outer cylinder member 37 Hole of intermediate member 39 Protrusion of outer cylinder member 39A Protrusion of outer cylinder member head

Claims (2)

In the anti-vibration mount comprising the central member and the outer cylindrical member made of resin connected to the periphery via a rubber member,
An intermediate member made of a resin different from the outer cylinder member is disposed between the rubber member and the outer cylinder member, and the rubber member and the intermediate member are fixed by an adhesive force of the intermediate member, and the outer cylinder member And anti-vibration mounts that are fixed to each other by inter-concave fitting.   The vibration-proof mount according to claim 1, wherein the resin constituting the intermediate member contains at least one selected from nylon 12, nylon 612, polyamide alloy, and PPE (polyphenylene ether).

Images