JP3978587B2 - Anti-vibration support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an anti-vibration support device that is used as, for example, an engine mount of an automobile and insulates and attenuates vibration between a support and a supported body.
[0002]
[Prior art]
In general, an engine mounted on an automobile is supported on a vehicle frame via an anti-vibration support device (mount) having anti-vibration performance corresponding to the vibration characteristics. This type of anti-vibration support device includes an inner cylinder connected to one of the engine side and the vehicle body side, and an outer mounting member disposed on the outer periphery and connected to the other of the engine side and the vehicle body side. It has a structure in which rubber elastic bodies are joined and integrated. Further, in order to reduce the weight, the outer mounting member is formed of a synthetic resin.
[0003]
That is, in this vibration isolating support device, for example, the left and right rubber elastic bodies of the inner cylinder are repeatedly deformed up and down due to the relative displacement of the inner cylinder and the outer mounting member due to the input of engine vibration from the engine, for example. In addition to being effectively insulated, vibration energy is consumed as heat by the friction inside the rubber elastic body, and is attenuated.
[0004]
[Problems to be solved by the invention]
However, the conventional anti-vibration support device has a structure in which the rubber elastic body and the outer mounting member are bonded and integrated so that the rubber elastic body is not detached from the outer mounting member due to repeated displacement input. In production, an adhesive process using an adhesive was included, and the cost was high. In addition, when discarded after long-term use, the outer mounting member made of a synthetic resin that can be recycled as a resource cannot be separated from the rubber elastic body that is difficult to recycle. It was difficult.
[0005]
The present invention has been made in view of the above-described problems, and its technical problem is that it can be easily assembled and can be recycled by separately collecting components that become resources after disposal. An object of the present invention is to provide an anti-vibration support device.
[0006]
[Means for Solving the Problems]
Conventional technical problems can be effectively solved by the present invention. That is, an antivibration support device according to the first aspect of the present invention includes an inner cylinder, an outer case disposed on the outer peripheral side of the inner cylinder, and an elastic leg made of a rubber-like elastic material extending from the inner cylinder toward the outer case. And the outer case is composed of a base and a bracket combined with each other, a first mounting hole having an engaging surface on an inner surface opened in one of the base and the bracket, A second mounting hole that overlaps with the first mounting hole is opened on the other side, a fixing ring is inserted across the first mounting hole and the second mounting hole, and the tip of the elastic leg is formed by the base and the bracket. A required number of hooking claws protruding from the opening end of the first mounting hole are fitted to the fitting recess formed in a non-adhering and retaining state with the fixed ring inserted into the second mounting hole. To be pressed Ri are those formed by engaging the engaging surfaces. Accordingly, the hooking claw is fixed by the fixing ring from the inner peripheral side in a state where the hooking surface and the hooking surface are hooked, so that if the fixing ring is removed from the first mounting hole and the second mounting hole, The engagement state between the engagement claw and the engagement surface is released, the outer case is disassembled into a base and a bracket, and the elastic legs can be separated.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 is a front view showing an anti-vibration support device according to a preferred embodiment of the present invention, FIG. 2 is a sectional view taken along line AA ′ in FIG. 1, FIG. 3 is a plan view, and FIG. FIG. 5 is a cross-sectional view taken along line BB ′ in FIG. 3, and FIG. 5 shows an exploded state of the vibration isolating support device of this embodiment at a position corresponding to line BB ′ in FIG. Sectional drawing and FIG. 6 are sectional views which partially enlarge and show the state where the stationary ring is pulled out in the vibration isolating support device of the present embodiment. In the following description, the X direction refers to the direction orthogonal to the cross section of FIG. 4, the Y direction refers to the left and right directions in FIGS. 1, 3, and 4, and the Z direction refers to FIGS. The vertical direction in FIG.
[0008]
The vibration isolating support device of the present embodiment is used, for example, as an engine mount of an automobile, and as shown in FIGS. 1 to 4, an inner cylinder 1 connected to the engine side that is a supported body, An outer case 2 disposed on the outer peripheral side of the inner cylinder 1 and connected to a vehicle body frame side as a support, elastic legs 3 extending from the inner cylinder 1 toward the outer case 2, and attached to the outer case 2 A pair of stationary rings 4 are provided. The inner cylinder 1 is manufactured by cutting a metal pipe such as a steel pipe, and its axis extends in the X direction. The elastic legs 3 are formed of a rubber-like elastic material, and are integrally joined to the inner cylinder 1 by insert molding.
[0009]
The outer case 2 includes a base 21 and a bracket 22 that are coupled to each other. The base 21 and the bracket 22 are formed of a polyamide resin containing about 50% by weight of glass fiber as a reinforcing fiber in order to reduce the weight of the vibration isolating support device, and the stationary ring 4 is made of an iron-based metal material or the like. It is made with. As is well known, polyamide resin is a synthetic resin material that can be recycled by recycling.
[0010]
As shown in FIGS. 1 and 3 to 5, the base 21 is erected on the bottom plate 211, on both left and right mounting seats 212, 212, and on the both sides in the X direction of the bottom plate 211. It has a presser plate 213, 213, 214, 214 and a pair of side plate parts 215, 215 formed between the presser plates 213, 214 facing each other in the X direction. The bracket 22 has a substantially Ω-shaped bent shape, that is, an arch portion 221 having a substantially U-shape projecting upward, side plate portions 222 and 222 extending downward from the left and right sides thereof, and the side plate portion. Retaining ribs 224 are formed on the outer side surfaces of the side plate portions 222 and 222 along both edges in the X direction.
[0011]
The lower portions of the side plate portions 222 of the bracket 22 are sandwiched between the press plates 213 and 214 of the base 21 outside the side plate portions 215 and 215 of the base 21. Further, each mounting seat 223 in the bracket 22 is superposed on the upper surface of each mounting seat 212 in the base 21.
[0012]
Each mounting seat 212 of the base 21 has a first mounting hole 216, and each mounting seat 223 of the bracket 22 has a second mounting hole 225 at a position where it overlaps with the first mounting hole 216. The fixed ring 4 is fitted over the first and second mounting holes 216 and 223 that are open and overlap each other.
[0013]
The fixed ring 4 is made of metal, and as shown in FIG. 5, a cylindrical portion 41 into which a bolt (not shown) for attachment to a vehicle body frame can be inserted, and a collar portion 42 formed at one end thereof. Have And each 2nd attachment hole 225 of the bracket 22 is an upper large diameter hole part which can insert the lower small diameter hole part 225a which can insert the cylindrical part 41 of the stationary ring 4, and the collar part 42 of the stationary ring 4 225b. For this reason, in the assembled state shown in FIG. 3, the flange portion 42 of the stationary ring 4 is fitted in the extended portion in the accommodated state, and the upper surface is substantially flush with the upper surface of the mounting seat 212 of the base 21. Yes.
[0014]
A plurality of hooking claws 226 protrude from the lower surface of each mounting seat 223 of the bracket 22 along the outer periphery of the small diameter hole 225a of the second mounting hole 225. As shown in FIG. 6, the hooking claw 226 has a slightly shorter projection length than the thickness of the mounting seat 212 in the base 21, and an outward flange portion 226 a is formed at the tip thereof. The hooking claws 226 are inclined so that their tips are close to each other in a free state so that they can be easily inserted into the first mounting holes 216 of the base 21.
[0015]
Each first mounting hole 216 of the base 21 is for inserting both the cylindrical portion 41 of the stationary ring 4 and the engaging claw 226 of the bracket 22, and the inner surface of the first mounting hole 216 includes the engaging claw 226. A stepped engagement surface 216a that can be engaged with the flange portion 226a is formed.
[0016]
That is, as shown in FIG. 6, by overlapping the mounting seat 212 of the base 21 and the mounting seat 223 of the bracket 22, the hooking claw 226 is inserted into the first mounting hole 216 and the fixing ring 4 When the cylindrical portion 41 is inserted from the second mounting hole 225 side, the respective engaging claws 226 are pressed by the outer peripheral surface of the cylindrical portion 41 and displaced to the outer peripheral side, and the outward flange portion 226a at the tip thereof is the first mounting hole. The base 21 and the bracket 22 are coupled to each other, and the base 21 and the bracket 22 are coupled to each other.
[0017]
The elastic leg 3 has an inverted V-shaped projection shape in the X direction, and a base portion 31 in which the inner cylinder 1 is joined and integrated in an embedded state, and a leg main body portion extending obliquely downward to the left and right from the base portion 31. 32. And the elastic leg 3, is provided between the bottom plate portion 211 of the base 21 in the outer case 2, as shown in FIGS. 1 and 4, the space S _L passing through the X direction is formed, the resilient legs 3 If, between the arch portion 221 of the bracket 22 in the outer casing 2, the space S _U passing through the X-direction are formed.
[0018]
As shown in FIG. 4, a pair of upper and lower extension overhanging portions 32a and 32b are formed at the distal ends of the leg main body portions 32 and 32 in the elastic leg 3, respectively. The overhang portions 32a and 32a are fitted into fitting recesses 222a and 222a formed on the upper inner surface of the side plate portions 222 and 222 in the bracket 22, and the lower retaining overhang portions 32b and 32b are 21 is fitted into fitting recesses 211a and 211a formed on the upper surface of the bottom plate portion 211 continuously with the inner side surfaces of the side plate portions 215 and 215. Further, the distal end portions of the leg main body portions 32 and 32 including the overhang preventing portions 32a and 32b are detached by the fitting concave portions 211a and 222a, the presser plates 213 and 214 and the side plate portion 215 in the base 21, respectively. It is held in a stopped state.
[0019]
According to the anti-vibration support device configured as described above, the base 21, the elastic leg 3, and the bracket 22 are combined with each other from the separated state shown in FIG. The engaging claw 226 of the mounting seat 223 is inserted into the first mounting hole 216 of the mounting seat 212 of the base 21, and the cylindrical portion 41 of the stationary ring 4 is inserted so as to straddle the first mounting hole 216 from the second mounting hole 225 side. The base 21 and the bracket 22 are coupled to each other by the engagement of the outward flange portion 226a of each engagement claw 226 and the engagement surface 216a of the first mounting hole 216, and the leg main body portions 32, 32 of the elastic leg 3 are connected to each other. The tip end portion is fitted to the base 21 and the bracket 22 in a retaining state, and the assembled state shown in FIG. 4 is obtained. For this reason, the adhesion process of the elastic leg 3 by application | coating of an adhesive agent is unnecessary, and can reduce manufacturing cost. The assembled anti-vibration support device fixes the inner cylinder 1 to the engine side, and fixes the outer case 2 to the vehicle body frame side via bolts (not shown) inserted through the fixing rings 4. Mounted as an engine mount.
[0020]
The hooking claw 226 is fixed from the inner peripheral side by the fixed ring 4 so that the outward flange part 226a and the hooking surface 216a are hooked. The coupling state between the outer case 2 (base 21 and bracket 22) and the elastic leg 3 is reliably maintained.
[0021]
For example, when engine vibration in the Z direction from the engine is input to the inner cylinder 1, the leg main body portions 32, 32 of the elastic leg 3 are elastically repeatedly deformed by this, so that the outer case 2, and thus the body frame Transmission of vibration to the side is effectively insulated, and vibration energy is converted into heat energy by internal friction of the rubber-like elastic material in the leg main body portions 32, 32, thereby absorbing and attenuating the vibration.
[0022]
Further, when the anti-vibration support device of this embodiment is to be discarded after a long period of use, the bolt that fixes the outer case 2 to the vehicle body frame is loosened and extracted from the fixing ring 4, and the fixing ring 4 is removed from the outer case. 6, the engaging claw 226 is in a free state as shown in FIG. 6, and the engagement with the engaging surface 216 a of the first mounting hole 216 is easily released. And the bracket 22 are disassembled, and this also releases the state where the tip of the elastic leg 3 is prevented from coming off by the base 21 and the bracket 22. Therefore, by separating the base 21 made of a synthetic resin material that can be recycled as a resource, the bracket 22 and the metal stationary ring 4 and the elastic legs 3 made of a rubber-like elastic material that is difficult to recycle, waste is separated. Can be reduced and resource recycling can be promoted.
[0023]
Contrary to the form shown in the figure, the hooking claw is projected from the upper surface of the mounting seat 212 of the base 21 and the corresponding hooking surface is formed in the mounting hole on the bracket 22 side. The effect can be realized.
[0024]
【The invention's effect】
According to the vibration isolating support device of the first aspect of the invention, the outer case includes the base and the bracket that are coupled by the engagement claws that maintain the engagement state with the engagement surface of the first mounting hole by inserting the stationary ring. Because the tip of the elastic leg is fitted with the base and bracket to prevent it from coming off, combine the base, elastic leg and bracket, insert the hooking claw into the first mounting hole, and insert the fixed ring into the second mounting hole. And it can assemble rapidly, without using an adhesive agent etc. only by inserting so that it may straddle the 1st attachment hole. Moreover, when disposing, simply pulling out the fixing ring releases the engagement between the engagement claw and the engagement surface, so that the outer case is disassembled into the base and bracket, and the elastic legs and the outer case can be easily removed. It can be separated, and the resource can be separated and recycled.
[Brief description of the drawings]
FIG. 1 is a front view showing an anti-vibration support device according to a preferred embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line AA ′ in FIG.
FIG. 3 is a plan view of a vibration isolating support device according to a preferred embodiment of the present invention.
4 is a cross-sectional view taken along line BB ′ in FIG.
5 is a cross-sectional view showing a state in which the vibration isolating support device according to the preferred embodiment of the present invention is disassembled, cut at a position corresponding to the line BB ′ of FIG. 3;
FIG. 6 is a partially enlarged cross-sectional view showing a state in which a stationary ring is pulled out in a vibration isolating support device according to a preferred embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Inner cylinder 2 Outer case 21 Base 211 Bottom plate part 211a, 222a Fitting recessed part 212,223 Mounting seat 213,214 Holding plate 215,222 Side plate part 216 First attachment hole 216a Engagement surface 22 Bracket 224 Rib 225 Second attachment hole 225a Small-diameter hole 225b Large-diameter hole 226 Engaging claw 226a Outward flange 3 Elastic leg 31 Base 32 Leg main body 32a, 32b Overhanging part 4 Retaining ring 41 Cylindrical part 42 Lump S _L , S _U space

Claims (1)

Elasticity made of an inner cylinder (1), an outer case (2) disposed on the outer peripheral side of the inner cylinder (1), and a rubber-like elastic material extending from the inner cylinder (1) toward the outer case (2) The outer case (2) comprises a base (21) and a bracket (22) combined with each other, and is provided on one of the base (21) and the bracket (22). A first mounting hole (216) having a hooking surface (216a) is opened, and the second mounting hole (216) overlaps with the first mounting hole (216) on the other of the base (21) and the bracket (22). 225) is opened, the fixing ring (4) is inserted across the first mounting hole (216) and the second mounting hole (225), and the tip of the elastic leg (3) is connected to the base (21). unbonded and the fitting recess formed in a bracket (22) A required number of hooking claws (226) which are fitted in a barbed state and protrude from the opening end of the first mounting hole (216) are inserted into the second mounting hole (225) and the stationary ring (4 ), The vibration isolating support device is engaged with the engagement surface (216a).

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