JPH07310614A - Intake resonator mounting structure - Google Patents

Abstract

PURPOSE:To make an intake resonator interchangeably common to different types of vehicles. CONSTITUTION:A cylindrical resiliently deformable coupling member 9 is used for intercoupling of an intake duct 8 having a plane part F and an opening part 11 formed in the plane part F and an intake resonator body 10. A groove 13 engageable with the opening part 11 of the intake duct 8 is formed in one end part of the coupling member 9. A groove part 15 engageable with the opening part 12 of the intake resonator body 10 is formed in the intermediate part of the coupling member 9. A plurality of grooves engageable with the opening part 12 of the intake resonator body 10 are sometimes formed in the intermediate part of the coupling member 9. Since the intake duct 8, the intake resonator body 10, and the coupling member 9 are independent from each other, the structure of a molding die for each of them is simplified. Further, a regulation of a position between the intake duct 8 and the intake resonator body 10 is facilitated, and the intake resonator is usable in interchangeable common to different types of vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile air intake resonator mounting structure, and more particularly to an air intake resonator mounting structure using a cylindrical connecting member which is separate from the air intake duct and the air intake resonator body.

[0002]

2. Description of the Related Art Intake resonators reduce the intake sound of a specific frequency by applying the Helmholtz resonance principle. As shown in FIG. 9, the intake resonator 1 is provided with a branch pipe 3 in the intake duct 2 and is attached to the tip thereof. The frequency f of the intake sound that can be reduced is f = A {S / (VL), where L is the length of the branch pipe, S is the cross-sectional area, and V is the volume of the intake resonator, as shown in FIG.
It can be expressed by the relational expression of ^1/2 . Here, A in the relational expression is a constant.

In the conventional intake resonator mounting structure, as shown in FIG. 11, a branch pipe 3 formed integrally with the intake duct 2 is attached to a neck pipe 4 formed in the intake resonator 1 and a sealing member made of urethane foam, rubber or the like. It was inserted through 5. Further, as shown in FIG. 12, the neck pipe 4 integrated with the intake resonator is inserted into the branch pipe 3 through the seal member 5, and the branch pipe 3 and the neck pipe 4 are connected as shown in FIG. In some cases, the joint rubber 6 is connected through the joint rubber 6 and the joint rubber 6 is attached to the vehicle body panel B for positioning. Further, as shown in FIG. 14, there is also one in which a flange 7 is provided on the outer tubular portion of the branch pipe 3 for positioning. As an example of the technique shown in FIG. 13, Japanese Utility Model Laid-Open No. 1-69172 discloses an intake resonator mounting structure for connecting a branch pipe and a neck pipe via a joint rubber arranged on a vehicle body panel. .

[0004]

As described above, the resonance frequency of the intake resonator is determined by the length of the branch pipe, the cross-sectional area and the volume of the intake resonator. Further, since the frequency of the generated intake sound differs depending on the vehicle type, it is necessary to change the shape of the intake duct and the intake resonator for each vehicle type used. Therefore, there is no compatibility with different vehicle types, and it is difficult to improve production efficiency. Also,
Since both the intake duct and intake resonator have protruding pipe parts, the molding die becomes complicated and large, and it took a lot of time to manufacture the die. In addition, molding defects were likely to occur.

The present invention has been made in view of the above problems, and an object of the present invention is to use a tubular connecting member which is separate from the intake duct and the intake resonator main body, so that the length of the attaching member can be increased. Alternatively, the resonance frequency of the intake resonator is adjusted by changing the mounting position so that the intake resonator main body can be commonly used in different vehicle types. Further, the structure of the molding die is simplified by eliminating the pipe portion protruding from the intake duct and the intake resonator.

[0006]

Means for Solving the Problems According to the present invention for solving the above problems, there is provided a tubular portion for connecting an intake duct and an intake resonator body having a flat surface portion and an opening portion provided in the flat surface portion. Forming a groove portion engageable with the opening of the intake duct at an end of the connecting member, and an intermediate portion of the connecting member of the intake resonator body. It is characterized in that a groove which can be engaged with the opening is formed.

In the present invention, it is preferable that a plurality of groove portions are formed in an intermediate portion of the connecting member so as to be engageable with the opening portion of the intake resonator body.

[0008] Further, a cylindrical elastically deformable connecting member is used for connecting the intake duct having a flat surface and having an opening in the flat surface with the intake resonator having a neck pipe. A groove portion that can be engaged with the opening portion of the intake duct is formed at one end portion of the member, and the outer cylinder portion or the inner cylinder portion of the connecting member has a diameter capable of fitting with the neck pipe of the intake resonator. It is characterized by

The groove is preferably a valley formed between two adjacent flanges.

It is also possible to form a flat portion projecting outward on the flat portion of the intake duct and provide an opening in the flat portion.

Further, the step between the flat portion and the flat portion is
It is desirable that the thickness is equal to or larger than the thickness of the flange forming the groove.

[0012]

A cylindrical elastically deformable connecting member is used for connecting the intake duct having the flat surface and the opening provided in the flat surface and the intake resonator body, and one end of the connecting member is By forming a groove portion that can be engaged with the opening portion of the intake duct and a groove portion that can be engaged with the opening portion of the intake resonator main body in the intermediate portion of the connecting member, the intake duct and the intake resonator main body are formed. Since the shape of is simple, the structure of the molding die is also simple. Further, since the connecting member itself is an independent small part, it can be formed by a small and simple molding die. Further, by making the connecting member elastically deformable, the installation location of the intake resonator main body with respect to the intake duct can be freely set. Moreover, the attachment to the intake duct and the intake resonator is facilitated, and sufficient sealing can be achieved without interposing a seal member.

In the present invention, by forming a plurality of groove portions which can be engaged with the opening portion of the intake resonator main body in the intermediate portion of the connecting member, it is possible to select the position of the groove in which the intake resonator main body is mounted. Therefore, the resonance frequency can be adjusted by freely changing the distance between the intake duct and the intake resonator main body.

Further, a cylindrical elastically deformable connecting member is used to connect the intake duct having the flat surface and the opening provided in the flat surface with the intake resonator having the neck pipe. A groove portion that can be engaged with the opening portion of the intake duct is formed at one end portion of the member, and the outer cylinder portion or the inner cylinder portion of the connecting member has a diameter capable of fitting with the neck pipe of the intake resonator. As a result, it is possible to use the conventional intake resonator having a neck pipe, and the degree of freedom in setting the shape is widened. Further, the shape of the molding die for the mounting member is also simplified.

Since the groove portion is a valley portion formed between two adjacent flanges, the wall thickness of the tubular member is set thin, and the flange portion is thickened to reduce the material used. be able to. Also, the shape of the molding die is simple.

By forming a flat portion protruding outward on the flat surface of the intake duct and providing an opening in the flat portion, the amount of the mounting member protruding to the inner cylinder of the intake duct is reduced. , Prevents an increase in intake resistance.

Since the step between the flat step portion and the flat portion is the same as or thicker than the thickness of the flange forming the groove portion, the flow of intake air is less disturbed and the intake air is reduced. Prevents an increase in resistance.

[0018]

The present invention will be described below with reference to the drawings.

The intake resonator mounting structure according to the first embodiment of the present invention, as shown in FIG. 1, has an intake duct 8 having a flat portion F, a connecting member 9, and an intake resonator body 10.
Consists of. An opening 11 is provided on the flat surface of the intake duct 8. Further, the intake resonator body 10 has a box shape, and an opening 12 is provided in the flat portion.

The connecting member 9 has a tubular shape and is made of an elastically deformable material such as natural rubber as a main component.
It is formed of a material containing R, NBR, butyl rubber, halogenated butyl rubber, chloroprene rubber or the like. The connecting member 9 is provided with groove portions 14 and 15 formed by two adjacent flanges 13 and 13 at one end portion and an intermediate portion. As shown in FIG. 2, the flange 13 becomes thinner toward the tip, and is smoothly connected to the intake duct 8 and the intake resonator body 10.

The grooves 14 and 15 are respectively provided in the intake duct 8
11 provided on the intake and the opening provided on the intake resonator
It is fitted so that it fits closely to 12. The distance between the intake duct 8 and the intake resonator body 10 is determined by the distance between the grooves 14 and 15. As described above, the resonance frequency of the intake resonator can be adjusted by changing the length of the branch pipe, that is, the distance between the intake duct 8 and the intake resonator body 10 in this embodiment. Therefore, the same intake resonator body 10 is used, and the groove 15
The resonance frequency can be adjusted by using the connecting pipes having different positions. At the same time, positioning of the intake resonator body 10 is also performed by fixing it in the groove portion 15. Since the fixing member 9 is elastically deformable, the installation location of the intake resonator main body 10 can be freely set by bending the fixing member 9 as shown in FIG. Alternatively, the fixing member 9 may be originally formed in a bent shape.

As described above, since the connecting member 9 is provided separately, the shapes of the intake duct 8 and the intake resonator main body 10 are simplified, and the structure of the molding die is simplified. Therefore, the time for producing the mold is shortened and the productivity is improved. In addition, the size of the mold is reduced by simplifying the structure of the mold, which facilitates transportation and installation work on the molding apparatus. Since the connecting member itself is an independent small part, the molding die can be made small and have a simple structure, and the time for producing the die can be reduced. Further, the shape of the mold can be changed in a short time, which is economical. Further, as shown in FIG. 3, the connecting member 9 can be elastically deformed and attached by selecting a material, and the positional relationship between the intake duct 8 and the intake resonator body 10 can be freely set. Moreover, the installation on the intake duct and intake resonator is
Since the connecting member 9 is deformed flexibly, it is possible to achieve a sufficient sealing without interposing a sealing member or the like. Since the resonance frequency can be adjusted by changing the length of the connecting member 9 without changing the intake resonator body 10.
The intake resonator body 10 can be commonly used for various vehicle types. Therefore, the product development period can be shortened and the production efficiency can be improved.

Next, a second embodiment will be described with reference to FIG. The second embodiment differs from the first embodiment in that a plurality of groove portions 15 'are provided in the intermediate portion of the connecting member 16. Groove
By providing a plurality of 15 ', it becomes possible to appropriately select the position at which the intake resonator main body 10 is mounted. Therefore, since the distance between the intake duct 8 and the intake resonator body 10 can be easily changed, the resonance frequency can be easily adjusted, and the connecting member 16 can be commonly used for various vehicle types. The description of the same effects as those of the first embodiment, such as the elastic deformation of the connecting member 16, will be omitted.

Next, a third embodiment will be described with reference to FIG. This embodiment differs from the first embodiment in that the intake resonator 17 has a neck pipe 18. Further, the outer cylinder part or the inner cylinder part of the connecting member 19 has a diameter that fits with the neck pipe 18 of the intake resonator 17, and the intake resonator 17 is
It is fixed to the vehicle body panel (not shown). Since the connecting member 19 has the groove portion 20 only at one end, the structure of the molding die for the connecting member 19 is simplified. Further, since the intake resonator 17 having the neck pipe 18 has been conventionally used, existing parts can be used. Also, the connecting member 19 and the neck pipe 18
Since a groove or the like is not used to engage with, it is easy to adjust the distance between the intake duct 8 and the intake resonator 17. Descriptions of other functions and effects similar to those of the first embodiment will be omitted.

Next, a fourth embodiment will be described with reference to FIG. In the present embodiment, the flat portion 22 protruding outward is formed on the flat surface portion of the intake duct 21, and the opening portion 23 is formed in the flat portion 22. Therefore, it is possible to reduce the protrusion amount of the flange 13 located in the inner cylinder portion of the intake duct 21 and prevent the intake air flow from being disturbed. This flat part and flat part
By making the step with 22 the same as the thickness of the flange 13 that forms the groove of the connecting member or greater than the thickness of the flange 13, it is possible to eliminate the protrusions on the inner tubular portion of the intake duct 21, thereby reducing the intake resistance. Will not be increased.

By implementing the present invention, various engine layouts and vehicle body layouts such as a vehicle having an engine 24 in a vertical layout as shown in FIG. 7 and a vehicle having an engine 25 in a horizontal layout as shown in FIG. It is possible to use the common intake resonator 10 or 17 for a vehicle having an intake system layout or the like.

[0027]

As described above, the present invention has the following effects. A cylindrical elastically deformable connecting member is used to connect the intake duct having the flat surface portion and the opening provided in the flat surface portion to the intake resonator body, and the intake duct is provided at one end of the connecting member. By forming a groove that can be engaged with the opening of the intake member and a groove that can be engaged with the opening of the intake resonator main body at the intermediate portion of the connecting member, the shapes of the intake duct and the intake resonator main body can be improved. Since it is simple, the structure of the molding die is also simple. Therefore, the time for making the mold is shortened and the cost for making the mold is also reduced. Further, since the mold structure is simplified, the mold becomes smaller, and transportation and installation work on the molding apparatus are facilitated. Further, since the connecting member itself is a small part, the molding die has a small and simple structure, and the time and cost for producing the die can be kept small. Further, the shape of the mold can be changed in a short time, which is economical. Further, by making the connecting member elastically deformable, the degree of freedom of the installation location of the intake resonator main body with respect to the intake duct is increased. Moreover, the attachment to the intake duct and the intake resonator is facilitated, and sufficient sealing can be achieved without interposing a seal member. Since the resonance frequency can be adjusted by replacing the connecting member, the intake resonator main body can be commonly used for various vehicle models, which contributes to shortening the product development period.

Further, since a plurality of groove portions which can be engaged with the opening portion of the intake resonator main body are formed in the intermediate portion of the connecting member, it is possible to select the position of the groove in which the intake resonator main body is mounted. The resonance frequency can be easily adjusted by changing the distance between the intake duct and the intake resonator body. Both the intake resonator main body and the connecting member can have common parts in different vehicle models.

In addition, a cylindrical elastically deformable connecting member is used for connecting the intake duct having the flat surface and the opening provided in the flat surface with the intake resonator having the neck pipe. A groove portion that can be engaged with the opening portion of the intake duct is formed at one end portion of the member, and the outer cylinder portion or the inner cylinder portion of the connecting member has a diameter capable of fitting with the neck pipe of the intake resonator. As a result, it is possible to use the conventional intake resonator having a neck pipe, and the shape of the molding die for the mounting member is simplified.

Since the groove portion is a valley portion formed between two adjacent flanges, the wall thickness of the tubular member is set thin, and the flange portion is thickened to reduce the material used. can do. Further, the shape of the molding die becomes simple.

By forming a flat portion protruding outward on the flat surface of the intake duct and providing an opening in the flat portion, the amount of the mounting member protruding to the inner cylinder of the intake duct is reduced. Since the intake resistance can be prevented from increasing, the performance of the engine will not be deteriorated by implementing the present invention.

Since the step between the flat step portion and the flat portion is equal to or larger than the thickness of the flange forming the groove portion, the flow of intake air is less disturbed and the intake air is reduced. Prevents increase in resistance and does not reduce engine performance.

[Brief description of drawings]

FIG. 1 is a perspective view of an intake resonator mounting structure showing a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a connecting member used in the intake resonator mounting structure according to the first embodiment of the present invention.

FIG. 3 is a vertical sectional view of a connecting member used in the intake resonator mounting structure according to the first embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view showing an intake resonator mounting structure according to a second embodiment of the present invention.

FIG. 5 is a vertical sectional view showing an intake resonator mounting structure of a third embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view showing an intake resonator mounting structure of a fourth embodiment of the present invention.

FIG. 7 is a schematic view of an upper surface of an engine room showing an installation example of the present invention.

FIG. 8 is a schematic view of an upper surface of an engine room showing an installation example of the present invention.

FIG. 9 is a schematic view showing an installation example of an intake resonator.

FIG. 10 is a schematic diagram showing dimensions of each part of the intake resonator.

FIG. 11 is a schematic diagram showing a conventional example.

FIG. 12 is a schematic diagram showing a conventional example.

FIG. 13 is a schematic diagram showing a conventional example.

FIG. 14 is a schematic diagram showing a conventional example.

[Explanation of symbols]

 8 intake duct 9 connecting member 10 intake resonator main body 11 opening 12 opening 13 flange 14 groove 15 groove 15 'groove 16 connecting member 17 intake resonator 18 neck pipe 19 connecting member 20 groove 21 intake duct 22 flat 23 opening

Claims (6)

[Claims] 1. A cylindrical elastically deformable connecting member is used for connecting an intake duct having a flat surface and an opening provided in the flat surface, and an intake resonator main body, and one end of the connecting member is used. Is formed with a groove that can be engaged with the opening of the intake duct, and a groove that can be engaged with the opening of the intake resonator body is formed in the intermediate portion of the connecting member. Mounting structure. 2. The intake resonator mounting structure according to claim 1, wherein a plurality of groove portions that can be engaged with the opening portion of the intake resonator body are formed in an intermediate portion of the connecting member. 3. A cylindrical elastically deformable connecting member is used for connecting an intake duct having a flat surface and an opening provided in the flat surface with an intake resonator having a neck pipe,
A groove that can be engaged with the opening of the intake duct is formed at one end of the connecting member, and the outer cylinder portion or the inner cylinder portion of the connecting member has a diameter capable of fitting with the neck pipe of the intake resonator. An intake resonator mounting structure characterized by having. 4. The groove portion is a valley portion formed between two adjacent flanges.
The intake resonator mounting structure according to any one of 1. 5. A flat portion protruding outward is formed on a flat surface portion of the air intake duct, and an opening portion is provided in the flat portion. Intake resonator mounting structure. 6. The intake resonator mounting according to claim 5, wherein the step between the flat portion and the flat portion is equal to or larger than the thickness of the flange forming the groove portion. Construction.