JP2536520Y2 - Air cleaner mount rubber - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a mount rubber which is inserted into a mounting portion when an air cleaner of an automobile engine is mounted on a wall of an engine or an engine room.

[0002]

2. Description of the Related Art For example, Japanese Utility Model Laid-Open Publication No. Sho 57-42159 discloses an air cleaner (air cleaner) mounted on an engine. This air cleaner is mounted over an engine head and a carburetor. , On the engine side,
A stay member fixed to the air cleaner is fastened to an engine head by a bolt via an elastic body (mount rubber) and attached.

The mount rubber has a pair of spaced-apart projections near the center in the longitudinal direction of the outer peripheral surface, and the stay member is received in a recess formed between the projections. I have. Further, a concave portion is provided between one of the convex portions and an upper end portion of the mount rubber, and a concave portion is further provided between the other convex portion and a lower end portion of the mount rubber. These upper and lower recesses are provided to prevent transmission of vibration by lowering the spring rate of the mount rubber as much as possible. To lower the spring rate, the recesses need to be deepened.

[0004]

However, when the recess is made deeper, the thickness of the mount rubber at this portion becomes thinner, and the durability of the mount rubber decreases.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and in the present invention, a mount rubber to be inserted into a mounting portion of an air cleaner and having a bolt hole in the center. And a recess recessed inward in the radial direction from the outer peripheral surface, wherein at least one of the inner surface and the outer surface of a portion left between the bottom surface of the recess and the bolt hole is provided. A rib is formed extending in the axial direction of the bolt hole over the width range.

According to this invention, since the thinned portion formed by the concave portion is reinforced by the rib, the durability of the mount rubber is improved. On the other hand, the concave portion is deepened to sufficiently increase the spring rate of the mount rubber. Can be lower.

In another aspect of the present invention, a mount rubber inserted into a mounting portion of an air cleaner, has a bolt hole at the center, and is provided with a stay member which is open to a peripheral surface at an axially intermediate portion of the bolt hole. In the one having a concave portion, provided on both sides thereof with concave portions recessed radially inward from the outer peripheral surface, and a collar member fitted in the bolt hole, the inner peripheral surface of the bolt hole has a small number. A rib is provided extending continuously in the axial direction from a position corresponding to the one concave portion to a position corresponding to the other concave portion.

According to this invention, the thin portion formed by the annular concave portion for fitting the stay member formed between the concave portions on both sides can be reinforced, and the provision of the collar member in which the rib is inserted into the bolt hole can be provided. Since it also functions as a stopper projection, the work of assembling the air cleaner mounting portion becomes easy.

A mount rubber (2) to be inserted into a mounting portion (3) of an air cleaner (1), which has an annular recess (10) for fitting a stay member which is open on a peripheral surface,
An edge of a circular hole (12) provided in the stay member (11);
At both corner edges (10b) at the bottom of the opposed annular recess ,
Each bulges outward from the recess in the direction of the axis L of the mount rubber and is located between the two corner edges (10b).
Stay recesses (1) that extend further inward in the radial direction than
7) is formed.

According to this invention, the recess extending further from the bottom of the annular recess lowers the spring rate of the mount rubber, and the recess allows the inner peripheral edge of the stay member to be fitted into the annular recess. However, there is no danger of contacting the mount rubber and damaging the mount rubber, thereby improving durability.

[0011]

[Embodiment] FIG. 1 is a sectional view showing an air cleaner mounting portion using a mount rubber according to the present invention. The air cleaner 1 is mounted on a side of an engine room through a mounting portion 3 into which a mount rubber 2 according to the present invention is inserted. Wheel house 4
It is attached to the wheel apron 4a formed in.

The mount rubber 2 has a bolt hole 5, and a collar member 6 is fitted into the bolt hole 5, and the mount rubber 2 and the collar member 6 connect the washer 9 with a bolt 7 penetrating the collar member 6. Is fastened on the wheel apron 4a. An annular recess 10 is formed in the middle of the mount rubber 2 in the axial direction. The annular recess 10 is open to the peripheral surface. A stay member 11 is fitted in the annular recess 10. Stay member
Numeral 11 is formed integrally with the air cleaner 1 and is provided with a circular hole 12 at a portion fitted to the annular recess 10.

In this manner, the mount rubber 2 is interposed between the apron 4a and the air cleaner 1 attached thereto to prevent the transmission of vibration between the apron 4a and the air cleaner 1, but the air cleaner 1 is relatively lightweight. Therefore, in order to obtain a sufficient vibration isolation effect, the spring rate of the mount rubber 2 must be considerably low (small).
Therefore, in order to lower the spring rate, concave portions 13 which are recessed inward in the radial direction from the outer peripheral surface are provided at upper and lower portions of the annular concave portion 10, respectively. The bottom 13a of the recess 13 is formed in an arc shape so as to avoid stress concentration. However, in order to obtain a sufficient spring rate, the recess 13 must be considerably deep, so that the bottom 13a is adjacent to the bottom 13a. The portion becomes thinner and the durability is reduced.

For this reason, in the first embodiment of the present invention, as shown in FIGS. 2 and 3, the mount rubber portion 2a left between the bottom surface 13a of the concave portion 13 and the bolt hole 5 is formed.
On the side of the bolt hole 5, that is, on the peripheral surface of the bolt hole 5, a rib extending in the direction of the axis L substantially equal to the width w of the recess 13.
14 are protruding. A plurality (three in the figure) of ribs 14 are provided at equal intervals in the circumferential direction. These ribs 14
Reinforces the thin mount rubber portion 2a, thus improving the durability of the portion 2a. In other words, such ribs 14
Is provided, the recess 13 can be made sufficiently deep to obtain a desired spring rate while maintaining the durability of the mount rubber 2.

The bolt member 5 has a collar member 6 as described above.
However, since the mount rubber 2 is an elastic body,
Even if the rib 14 protrudes from the peripheral surface of the bolt hole 5, the collar member 6 can be fitted. Rather, since the collar member 6 is fixed in the bolt hole 5 and temporarily fixed by the elastic force of the rib 14, the assembling work of the mounting portion 3 becomes easy.

FIGS. 4 and 5 show a second embodiment of the mount rubber according to the present invention. In this embodiment, a plurality of ribs 15 in the direction of the axis L are provided at equal intervals in the circumferential direction on the outer surface of the mount rubber portion 2a, that is, on the bottom surface 13a of the concave portion 13. Needless to say, these ribs 15 have the same durability improving effect as the ribs 14.

In a third embodiment of the present invention shown in FIG. 6, an axis L extends from a position corresponding to the upper concave portion 13-1 to a position corresponding to the lower concave portion 13-2 on the peripheral surface of the bolt hole 5. A rib 16 extending continuously in the direction is protruded. This rib
Reference numeral 16 reinforces the thin portions 2a, 2a formed by the recesses 13-1 and 13-2, and also reinforces the thin portion 2b formed by the annular recess 10. The ribs 16 are not extended to the upper and lower end surfaces of the mount rubber 2 but are provided at both upper and lower ends of the bolt hole 5 peripheral surface.
It is desirable to leave a portion where no projection is formed. This facilitates insertion of the collar member 6 into the bolt hole 5.

FIG. 7 shows a fourth embodiment of the present invention. In this embodiment, a circular hole 1 provided in a stay member 11 is provided.
At the upper and lower corner edges 10b, 10b of the bottom 10a of the annular recess 10 facing the edge of the second edge , respectively , swelling outward from the annular recess 10 in the axial direction, and inside the two corner edges 10b.
Concave portions 17, 17 extending further inward in the radial direction than the intervening portions are formed. These stay escape recesses 17 are provided in the mount rubber 2 similarly to the recesses 13 in the above-described embodiments.
Works to lower the spring rate of Further, the edge 12a of the circular hole 12 provided in the stay member 11 is apt to form a sharp corner as a result of hole machining by die cutting or the like, and the portion of the annular recess 10 that comes into contact with the edge 12a is damaged. Although it is easy to attach, by providing the above-described concave portion 17, contact between the annular concave portion 10 and the edge portion 12 a can be avoided, so that the durability of the mount rubber 2 is improved.

The means for improving the durability of the mount rubber in each of the above-mentioned embodiments does not necessarily have to be applied independently, and all or some of them can be used together in one mount rubber. For example, the mount rubber 2 shown in FIG.
6, the rib 16 in FIG. 6, and the stay escape recess 17 in FIG. 7.

[0020]

According to the first aspect of the present invention, the thinned portion formed by forming the concave portion is reinforced by the rib, so that the durability of the mount rubber is improved, while the concave portion is made deeper to mount. The rubber spring rate can be sufficiently reduced.

According to the second aspect of the present invention, the thin portion formed by the annular recess for fitting the stay member formed between the concave portions on both sides can be reinforced, and the rib is inserted into the bolt hole. Since it also functions as a temporary fixing projection of the collar member, the work of assembling the air cleaner attachment portion becomes easy.

According to the third aspect of the present invention, the recess extending further from the bottom of the annular recess for fitting the stay member reduces the spring rate of the mount rubber, and is fitted into the annular recess by the recess. Since the inner peripheral edge of the stay member does not contact the mount rubber to damage the mount rubber, the durability is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an air cleaner mounting portion using a mount rubber according to the present invention.

FIG. 2 is a longitudinal sectional view of the mount rubber according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a longitudinal sectional view of a mount rubber according to a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a longitudinal sectional view of a mount rubber according to a third embodiment of the present invention.

FIG. 7 is a cross-sectional view illustrating an air cleaner mounting portion using a mount rubber according to a fourth embodiment of the present invention.

FIG. 8 is a longitudinal sectional view of a mount rubber showing still another embodiment of the present invention.

[Explanation of symbols]

1 ... air cleaner, 2 ... mount rubber, 3 ... mounting part,
4: Wheel house, 5: Bolt hole, 6: Color member,
7 bolt, 9 washer, 10 annular recess, 11 stay member, 12 circular hole, 13 recess, 14, 15, 16
... Rib, 17 ... Stay escape recess .

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-38731 (JP, A) JP-A-63-34340 (JP, A) JP-A-63-231033 (JP, A) 42159 (JP, U) Actually open Hei 2-8625 (JP, U) Actually open 1987-77346 (JP, U) Actually open 49-89590 (JP, U) Actually open 1986-76725 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A mounting rubber (2) inserted into a mounting portion (3) of an air cleaner (1), having a bolt hole (5) in the center, and concavely recessed radially inward from an outer peripheral surface. (13) a part (2) left between the bottom surface (13a) of the recess and the bolt hole;
a) a rib (1) extending in the direction of the axis L of the bolt hole over at least the width range of the concave portion;
A mount rubber for an air cleaner characterized by forming (4, 15). 2. A mounting rubber (2) inserted into a mounting portion (3) of an air cleaner (1), having a bolt hole (5) in the center, and a peripheral surface at an intermediate portion of the bolt hole in the direction of the axis L. It has an annular recess (10) for fitting a stay member to be opened, and has a recess (13) recessed radially inward from the outer peripheral surface on each side thereof, and a collar member (6) in the bolt hole. A rib (16) extending continuously in the axial direction from at least a position corresponding to the one recess to a position corresponding to the other recess at the inner peripheral surface of the bolt hole. A mount rubber for an air cleaner. In 3. A mount rubber that is inserted into the mounting portion of the air cleaner (1) (3) (2), in those with annular recess of the stay member for fitting opening to the circumferential surface (10), the stay member ( Edge of circular hole (12) provided in 11)
Corner edges (10b) at the bottom of the annular recess facing the portion
To the between two corner edge (10b) with each bulging from the recess to the axis L direction outside of the mount rubber
Claim, characterized in that the formation of the stay relief recess extends further radially inward than the intermediate portion (17) one or請
The mount rubber of the air cleaner according to claim 2 .