JPH0742788A - Double-vibro-isolator mounting structure - Google Patents

Abstract

PURPOSE:To provide a double vibro-isolator mounting structure that serves as sound insulation and facilitates its installation. CONSTITUTION:Both upper and lower caps 3 and 4 are set up on the circumference of a motor-driven pumping plant 1. Two stepped parts 3a and 4a are formed in both ends where these upper and lower caps 3 and 4 are opposed to each other, while two flange parts 3b and 4b are formed there as well. In addition, a pair of first mount insulators 10 and 11 are attached tight to both these stepped parts 3a and 4a. A pair of second mount insulators 12 and 13 are attached tight to each top face of these flanges 3b and 4b of the upper cap 3 and each underside of these flange parts 3b and 4b, respectively. Each projection 14 jutting out of the motor-driven pumping plant 1 is held between both these first mount insulators 10 and 11 to be opposed to each other vertically, In succession, the flange parts 3b and 4b are attached to a frame of the car body by means of bolts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for mounting a vibration source such as an electric pump device on a support member such as a vehicle body frame in a double vibration-proof state, and more particularly to a double-layer structure that also serves as a sound insulation cover. The present invention relates to a swing mounting structure.

[0002]

2. Description of the Related Art As a conventional double anti-vibration mounting structure, there is one disclosed in, for example, Japanese Utility Model Laid-Open No. 57-59241. In this mounting structure, for example, as shown in FIG. 3, two pairs of flange portions 32 facing each other with a predetermined space left and right are provided on an outer peripheral portion of a first bracket 31 that holds a pump device 30 that is a vibration source. , And the second bracket 34 is bolted to each of the pair of flanges 32 via the first mount insulator 33. Further, each of the second brackets 34 extends upward, and an upper end portion of each of the second brackets 34 is a vehicle body frame 36 that is a support member via the second mount insulator 35.
It is configured by bolting to.

[0003]

However, in the conventional double anti-vibration mounting structure having the above-mentioned structure, the first mount insulator 33 and the second mount insulator 35 are individually assembled by bolting. Fastening work is required and the number of parts is large.

Further, in the mounting structure as described above, if the pump device 30 which is the vibration source is to be provided with soundproofing means, it is necessary to install a soundproof cover in addition to the above-mentioned vibration-proof member, and the work is complicated. Becomes The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a double vibration-proof mounting structure that also serves as soundproof and is easy to assemble.

[0005]

In order to achieve the above object, a double vibration-proof mounting structure of the present invention is a double vibration-proof mounting structure for mounting a vibration source on a support member, and is opposed to each other in the vertical direction. An upper cap and a lower cap having a volume capable of accommodating a vibration source with a predetermined gap and having opposite ends engaged with each other, and formed on each of the opposite ends and projecting in the outer peripheral direction. A pair of step portions facing each other in the vertical direction, a pair of flange portions that continuously extend to the outer periphery of the respective step portions and engage with each other, and a pair of integrally fixed first portions in the respective step portions. 1 mount insulator, and a convex portion that projects from the vibration source and is sandwiched between the pair of first mount insulators, and the pair of engaged flange portions interposes the second mount insulator. It is characterized in that attached to the support member Te.

[0006]

The vibration source is vibration-supported by the cap only by engaging the upper and lower caps so that the convex portion protruding from the vibration source is located between the first mount insulators of the upper and lower caps. . Further, the flange portion of the cap is fastened and attached to the support member by bolting or the like via the second mount insulator.

At this time, the cap also serves as a soundproof cover, and no additional work is required for mounting the soundproof cover. Further, even if the first mount insulator is deteriorated and damaged and the vibration source is disengaged, the first mount insulator falls into the lower cap and also functions as a fall prevention member.

[0008]

Embodiments of the present invention will be described with reference to the drawings.
In the following embodiments, an electric pump device will be described as an example of a vibration source, but it goes without saying that it can be applied to other vibration sources such as an electric motor. First, the configuration will be described. As shown in FIGS. 1 and 2, a box-shaped cap 2 is arranged so as to cover the entire circumference of the electric pump device 1 that is a vibration source with a predetermined gap.

The box-shaped cap 2 is composed of an upper cap 3 and a lower cap 4 which are vertically divided into two parts. The bottom face of the lower cap 4 has an intake duct 5 and an exhaust gas of the electric pump device 1. Two duct openings 7 through which the duct 6 is inserted are provided. Grommets 8 are attached to the openings 7, and the ducts 5 and 6 project downward through the openings 7.

Ends of the upper and lower caps 3 and 4 facing each other project outward in the circumferential direction to form step portions 3a and 4a, respectively, and further extend laterally to form flange portions 3b and 4b. 4b is formed. Each step 3a, 4a
The first mount insulators 10 and 11 respectively.
Are integrally molded by being vulcanized and bonded along the circumferential direction.

The second mount insulators 12 and 13 are fixed to the upper surface of the flange portion 3b of the upper cap 3 and the lower surface of the flange portion 4b of the lower cap 4 by vulcanization adhesion, and the respective flange portions are formed. 3b,
Bolt holes are formed in the 4b and the second mount insulators 12 and 13 in such a manner that their axes are coaxial with each other in the vertical direction.

Further, convex portions 14 are provided so as to project laterally from both longitudinal side surfaces of the electric pump device 1, and the convex portions 14 are vertically opposed to each other in the first mount insulator 10, It is sandwiched between 11 so that the first
The electric pump device 1 is elastically supported by the cap 2 via the mount insulators 10 and 11. further,
The flange portions 3b and 4b are attached to the bracket portion 16 of the frame 15 of the vehicle body by bolting and elastically supported by the frame 15.

In the figure, 17 is a bolt and 18 is a nut. For the assembly of the double vibration-proof mounting structure as described above, for example, first, in the lower cap 4, the electric pump device 1
Is inserted, the intake duct 5 and the exhaust duct 6 of the electric pump device 1 are inserted into the duct opening 7, and 2
The first protrusions 14 are fixed to the lower cap 4, respectively.
Place it on the insulator 11.

Next, the upper cap 3 is put on the lower cap 4, and in that state, the flange portions 3b and 4b are bolted to the bracket portion 16 of the vehicle body frame 15 via the second mount insulators 12 and 13. Assembly is completed. As described above, in the double vibration-proof mounting structure of the present embodiment, the flange portion 3b, 4b of the cap 1 is mounted with the lower cap 4 on which the electric pump device 1 as a vibration source is placed and the upper cap 3 being covered. The second mount insulator 12,
It is assembled by simply bolting it to the frame 15 of the vehicle body which is a support member via 13.

Since the cap 1 also serves as a soundproof cover, it is necessary to additionally install a soundproof cover. Further, even if the first mount insulators 10 and 11 are deteriorated and damaged, the electric pump device 1 is prevented from falling on the bottom surface of the lower cap 4, so that it is not necessary to provide a separate fall prevention means.

In the above embodiment, the electric pump device 1
Although the two convex portions 14 are provided in the above, the convex portions 14 may be provided around the entire circumference of the electric pump device 1 along the first mount insulators 10 and 11.

[0017]

As described above, in the double vibration-proof mounting structure of the present invention, the fastening work is only the fastening work to the support member, so that the assembling is easy. Further, since the cap also serves as the soundproof cover, it is not necessary to separately install the soundproof cover.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a double antivibration mounting structure according to an embodiment of the present invention.

FIG. 2 is an AA diagram in FIG.

FIG. 3 is a side sectional view showing a conventional double vibration isolation mounting structure.

[Explanation of symbols]

 1 Electric Pump Device (Vibration Source) 2 Cap 3 Upper Cap 4 Lower Cap 3a, 4a Steps 3b, 4b Flange 10, 11 1st Mount Insulator 12, 13 2nd Mount Insulator 14 Convex 15 Frame

Claims (1)

[Claims] 1. A double anti-vibration mounting structure for mounting a vibration source on a support member, having a volume capable of accommodating the vibration source facing each other in the vertical direction with a predetermined gap and having mutually facing end portions interrelated with each other. A pair of upper and lower caps that can be fitted together, and a pair of stepped portions that are respectively formed on each of the opposite end portions and that project in the outer peripheral direction and that face each other in the vertical direction, and project outward in the outer periphery in succession to each of the stepped portions A pair of flange portions that engage with each other, a pair of first mount insulators that are integrally fixed in each of the step portions, and a pair of first mount insulators that protrude from the vibration source and are sandwiched between the pair of first mount insulators. And a pair of flange portions engaged with each other are attached to a support member via a second mount insulator.