JPH0529568Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine support device with a dynamic damper that allows easy and adjustable installation of the dynamic damper.

[Prior Art] Conventionally, dynamic dampers have often been attached to engine support devices used to support engines on vehicle bodies in order to control harmful vibrations caused by rotational imbalances generated by the engine. . In this case, most of the dynamic dampers are attached to a bracket on the engine mounting side of the engine support device by welding, gluing, or bolting.

[Problems to be solved by the invention] However, in the conventional engine support device with a dynamic damper, the dynamic damper is attached to the bracket of the engine support device by welding, gluing, or bolting, so the following problems occur. A problem arose.

When attaching by welding, heating at the welded part induces non-uniformity of the material, which is disadvantageous to strength, so it was necessary to take this into consideration.
Furthermore, welding rods and the like are required, making the work process complicated and costly.

Attachment by adhesive is expensive because the use of adhesive complicates the work process and lengthens the work time.

Mounting by bolting requires additional bolts, resulting in high costs, and also lacks flexibility in mounting position.

As described above, the conventional engine support device with a dynamic damper has problems with the mounting strength of the dynamic damper, the workability of the mounting work, and the economic efficiency thereof.

SUMMARY OF THE INVENTION An object of the present invention is to provide an engine support device equipped with a dynamic damper that is excellent in controlling harmful vibrations, is simple and economical, and is equipped with a dynamic damper.

[Means for Solving the Problems] The engine support device with a dynamic damper of the present invention has a substantially cylindrical shape having at least one engagement base for mounting the engine and a plurality of protrusions or protrusions for caulking on the outer peripheral surface. a bracket body having the same shape as the bracket body, a shaft portion disposed within a through hole of the bracket body that is attached to the vehicle body, and a shaft portion provided between the inner circumferential surface of the through hole of the bracket body and the outer circumferential surface of the shaft portion. A support member made of an elastic material, a fixing member fixed to the outer peripheral surface of the bracket body by caulking the protrusion or the protrusion of the bracket body, a mass member, the fixing member and the penetrating member. It is characterized by having a dynamic damper consisting of an elastic member provided between the two and connecting the two.

[Function] In the engine support device with a dynamic damper of the present invention, a plurality of caulking protrusions or protrusions are integrally formed on the outer peripheral surface of the bracket body. Furthermore, a dynamic damper for controlling vibrations from an engine has this structure, which has a fixing member that is caulked and fixed by a plurality of protrusions or protrusions for caulking formed on the bracket body. Therefore, in this invention, the dynamic damper is attached and fixed to the engine support device by caulking, so at the final stage of the assembly process of the engine support device,
It becomes easy to install the dynamic damper in a position most suitable for suppressing harmful vibrations.

[Embodiments] (First Embodiment) An engine support device with a dynamic damper according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a front view of the engine support device with a dynamic damper according to the first embodiment, and FIG. 2 is an elevational view thereof. 3 and 4 are enlarged views of the dynamic damper used in the first embodiment, with FIG. 3 being a front view and FIG. 4 being a longitudinal sectional view. FIG. 5 is an installation diagram of the engine support device with a dynamic damper according to the first embodiment.

The engine support device with a dynamic damper according to the first embodiment has a protrusion 11 and an engagement platform 12 on the outer peripheral surface.
A substantially cylindrical bracket body 1 having a through hole 13 formed therein; a shaft portion 2 attached to the vehicle body S and disposed within the through hole 13 of the bracket body 1; and an inner circumferential surface of the through hole 13 of the bracket body 1. and the outer circumferential surface of the shaft portion 2.
and a dynamic damper 4 which is fixed by caulking a protrusion 11 formed on the outer peripheral surface of the bracket body 1.

The bracket main body 1 has a through hole 13 in the center and has a substantially cylindrical shape made of aluminum alloy, and has a protrusion 11 and an engagement base 12 formed on its outer peripheral surface. The protrusions 11 are formed integrally with the bracket body 1, with two rows of four protrusions arranged in a straight line along both sides of the outer peripheral surface of the bracket body. Projection 1
1 has a substantially cylindrical shape whose height is slightly higher than the caulked portion of the dynamic damper to which it is attached, and the dynamic damper 4 is fixed by the caulking deformation. The protrusion 11
The distance between the two rows is the dynamic damper 4 to be installed.
It is defined by the width of , and is set slightly wider than that width. The mutual spacing between the protrusions 11 forming the row is shorter than the circumferential length of the dynamic damper 4, and is set so that at least two protrusions 11 can caulk the dynamic damper 4. The engagement base portion 12 is a member that engages with the engine E to connect and fix the bracket body 1 to the engine E via the engine fixing jig EB, and has a substantially triangular shape and is formed integrally on the outer peripheral surface of the bracket body 1. has been done. The straight bottom has a through hole 12a for bolt fixing and two bolt holes 12b.
is formed.

The shaft portion 2 has a round bar shape, is disposed to penetrate through a through hole 13 formed in the center of the bracket body 1, and is fixed to the vehicle body S at both ends via a vehicle body fixing jig SB. . The outer diameter of the shaft portion 2 is smaller than the inner diameter of the through hole 13 of the bracket body 1, and there is a wide gap between the inner peripheral surface of the through hole 13 and the outer peripheral surface of the shaft portion 2. There is. The length of the shaft portion 2 is approximately the same as the width of the bracket body 1,
Vehicle body fixing jig SB and bracket body 1 on both ends
There is a slight gap between the two side surfaces, allowing relative displacement.

The support member 3 is made of an elastic material, and is disposed between the inner peripheral surface of the through hole 13 of the bracket body 1 and the shaft portion 2, and connects the two. The support member 3 consists of an arc-shaped portion 31 divided into three parts, each arc-shaped part has a substantially fan shape with two forks, and one end serving as a head is integrally connected to the outer circumferential surface of the shaft portion 2. The other bifurcated end is integrally connected to the inner peripheral surface of the bracket main body 1. The tension/compression spring strength of each arcuate portion 31 is set so that the shaft portion 2 is located at the center of the through hole 13 when the engine E is supported.

The dynamic damper 4 is provided between a fixing member 41 and a mass member 42, which are caulked and fixed to the outer circumferential surface of the bracket body 1 by the protrusion 11, and a mass member 42. The elastic member 43 supports the member 42 and has a spring constant. The fixing member 41 is made of an aluminum alloy material, and its width is slightly narrower than the interval between the two rows of protrusions 11 formed in the bracket body 1, and its length is equal to the distance between the protrusions 11 forming the rows. It is slightly longer than the interval. On both sides in the height direction, there are engagement grooves 4 parallel to the mounting surface.
1a and 41b are formed, and the protrusion 11 is formed by caulking.
are deformed and fixed by fitting into the engagement grooves 41a and 41b. The mass member 42 acts as a mass body for the dynamic damper 4 and is made of iron. The mass of the mass member 42 is determined by the set natural frequency of the dynamic damper 4 together with the spring constant of the elastic member 43. The elastic member 43 is made of a rubber-based material and supports the mass member 42 in the compression and tension directions. Therefore, it has a compression/tension spring constant, forms a vibration system together with the mass member 42, and absorbs harmful vibrations transmitted from the engine E. As a result, almost no harmful vibrations are transmitted to the vehicle body S.

(Second Embodiment) As another embodiment of the present invention, a second embodiment will be described with reference to FIGS. 6 and 7. FIG. 6 is a front view of the engine support device with a dynamic damper according to the second embodiment, and FIG. 7 is an elevational view thereof.

The engine support device with a dynamic damper of the second embodiment uses a bracket body 5 on which two protrusions 51 are formed as caulking members in place of the bracket body 1 of the first embodiment. The rest is the same as the first embodiment.

Specifically, as shown in FIG. 6, the bracket main body 5 has a cylindrical shape made of aluminum alloy and has a through hole 53 in the center, and has two protrusions 51a, 51b and two protrusions on its outer peripheral surface. An engagement base portion 52 is formed. The protrusions 51a and 51b are formed on the outer circumferential surface of the bracket main body 5 along both side edges at a height that allows the portion of the fixing member 41 of the dynamic damper 4 to be caulked. The distance between the two protrusions 51a and 51b is slightly wider than the width of the dynamic damper. Projection 51
a and 51b are formed to protrude from the outer circumferential surface of the bracket body 5 at an angle close to perpendicular to facilitate caulking of the dynamic damper. Engagement base part 5
A through hole 5 for bolt fixing is provided in the flat bottom of 2.
2a and two bolt holes 52b are formed.

In the first embodiment, the caulking portion for caulking the dynamic damper is a protrusion discontinuously formed at a predetermined interval, whereas in the second embodiment, the caulking portion is formed by a continuous protrusion. is formed. Therefore, the second embodiment has a greater degree of freedom in the mounting position of the dynamic damper than the first embodiment.

The rest of the structure is the same as that of the first embodiment.

[Effects of the invention] As is clear from the above explanation, the engine support device with a dynamic damper of the present invention requires no assembly process for the engine support device because the dynamic damper is attached to the engine support device by caulking. At the final stage, the dynamic damper can be easily installed in a mounting position suitable for suppressing harmful vibrations. As a result, the dynamic damper can be installed easily and effectively on the engine support, effectively suppressing harmful vibrations, simplifying the assembly process, and shortening work time, improving work efficiency and economy. You can contribute to improvement.

[Brief explanation of the drawing]

FIG. 1 is a front view of an engine support device with a dynamic damper according to a first embodiment of the present invention;
FIG. 2 is an elevational view thereof. 3 and 4 are enlarged views of the dynamic damper used in this embodiment, with FIG. 3 being a front view and FIG. 4 being a longitudinal sectional view.
FIG. 5 is a diagram showing an installed state of the engine support device with a dynamic damper according to the first embodiment. Figure 6 is the second
FIG. 7 is a front view of an engine support device with a dynamic damper according to an embodiment, and FIG. 7 is an elevational view thereof. 1, 5...Bracket body, 2...Shaft part, 3...
...Support member, 4...Dynamic damper, 11...
...Protrusion, 12...Engagement member, 13...Through hole, 4
1... Fixed member, 42... Mass member, 43... Elastic member.

Claims (1)

[Claims for Utility Model Registration] A substantially cylindrical bracket body having at least one engagement base for mounting an engine and a plurality of protrusions or protrusions for caulking on the outer peripheral surface, and the bracket body to be attached to a vehicle body. a support member made of an elastic material provided between an inner peripheral surface of the through hole of the bracket body and an outer peripheral surface of the shaft part; A fixing member fixed to the outer circumferential surface of the bracket main body by caulking the protrusion or the protrusion, a mass member, and an elastic member provided between the fixing member and the mass member to connect the two. An engine support device with a dynamic damper, characterized in that it has a dynamic damper comprising: