JPH0542663U - Resonator mounting structure - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a resonator mounting structure in which a plurality of resonators are connected to an intake passage of an engine, and simplifies and facilitates the configuration and installation of a plurality of resonators.
Moreover, the purpose is to reduce the mounting space for the resonator. [Structure] A plurality of resonators 3 and 4 having different capacities separated from the connection ports 3a and 4a with the intake passage 1 are integrally connected to each other, and an upstream side resonator 3 is connected to a downstream side resonator 4 3c is provided with a lid 7,
A lid 8 is also provided on the opening 4c to the outside of the final downstream resonator 4. In addition, the upstream resonator 3
The opening 4c of the resonator 4 on the downstream side is successively larger than the opening 3c.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a resonator mounting structure in which a plurality of resonators are connected to an intake passage of an engine.

[0002]

[Prior Art]

 FIG. 3 is a schematic sectional view of a conventional resonator mounting structure showing a state where a plurality of resonators are connected to an intake passage of an engine.

Conventionally, in a large vehicle such as a bus, as shown in FIG. 3, a plurality of, for example, two resonators 3 and 4 are connected between the air intake 2a of the intake passage 1 and the air cleaner 2. As a result, a means for canceling the intake sound having two different resonance frequencies in the intake passage 1 to reduce the intake sound is adopted.

That is, these two resonators 3 and 4 are individually manufactured and have different volumes, and the connection ports 3a and 4a of the hoses 5 and 6 are located on the upstream side of the intake passage 1. And the downstream side, and each is individually attached to a part of the vehicle body by an arbitrary means (not shown).

[0005]

[Problems to be solved by the device]

 However, in the conventional mounting structure for a plurality of resonators as described above, since resonators of different sizes are mounted individually, a mounting structure with a different structure is required for each resonator. There is a problem in that the structure is complicated to make the mounting work complicated, and moreover, the mounting place is widely occupied to reduce the space utilization space of the vehicle body.

The present invention has been made in view of the above problems, and is configured as a single unit in which a plurality of resonators are connected to each other, and an opening at a portion where each resonator is connected and a portion outside the final resonator. By providing a lid on each side opening so that each resonator has an independent volume, the structure and installation of multiple resonators can be simplified and facilitated, and the mounting space for mounting the resonators is reduced. It is an object of the present invention to provide a resonator mounting structure.

[0007]

[Means for Solving the Problems]

 Therefore, the resonator mounting structure of the present invention according to claim 1 is a resonator mounting structure in which a plurality of resonators are connected to an intake passage of an engine, and a plurality of different capacities with different connection ports to the intake passage are provided. Individual resonators are connected and integrally provided, and a lid is provided at the opening where the upstream resonator is connected to the downstream resonator, and also at the final opening of the downstream resonator. It is characterized by having a lid.

Further, the resonator mounting structure of the present invention according to claim 2 is formed such that the opening of the downstream resonator is successively larger than the opening of the upstream resonator. Is characterized by.

[0009]

[Action]

 In the resonator mounting structure of the present invention according to the above-mentioned claim 1, since each resonator is connected and integrated into one, the mounting work for mounting each resonator on the vehicle body can be performed by one operation. .. Moreover, since all the resonators are integrated and integrated, it does not require a large space for mounting on the vehicle body.

Further, in the resonator mounting structure of the present invention according to claim 2, since the resonator opening on the upstream side is gradually increased to the resonator opening on the downstream side, the hand is inserted from the opening on the downstream side to the upstream side. Each independent resonator can be easily formed by sequentially closing the lids from the side.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view of a resonator mounting structure showing an embodiment of the present invention, and FIG. 2 is another embodiment of the present invention. FIG. 3 is a schematic cross-sectional view of the resonator mounting structure shown in FIG. 1, and in FIGS. 1 and 2, the same reference numerals as in FIG. 3 indicate substantially the same parts.

In FIG. 1, reference numeral 1 denotes an intake passage of a large vehicle such as a bus. This intake passage 1 has an intake inlet 1a on its upstream side and communicates with an air cleaner 2 on its downstream side. ing. In addition, in the intake passage 1, an upstream side resonator 3 and a downstream side resonator 4 which have two different volumes so as to protrude laterally from the middle thereof are connected to the hoses 5 and 6 with the connection ports 3a and 4a. These resonators 3 and 4 are attached to a part of a vehicle body (not shown) in a state of being integrally connected.

That is, these two upstream side resonators 3 and downstream side resonators 4 have substantially the same shape and area at each connecting surface, and their volumes are made different by changing their heights. The two resonators 3 and 4 are formed as one united body by connecting them. The molding of these resonators 3 and 4 is performed by blow molding.

An opening 3c is provided in the boundary wall 3b connecting the upstream side resonator 3 and the downstream side resonator 4, and an opening 4c is opened outside the final downstream side resonator 4. Are provided, and the lids 7 and 8 are attached to the openings 3c and 4c, so that the resonators 3 and 4 are configured as independent chambers.

Further, the openings 3c and 4c are formed on substantially the same axis and are successively larger from the upstream side to the downstream side. That is, in order to attach the lid 7 to the opening 3c of the upstream resonator 3, it is possible to insert the lid through the outer opening 4c on the downstream side, and finally the final downstream resonator. By attaching the lid 8 to the outer opening 4c of 4, the independent resonators 3 and 4 having different volumes are completed.

With the above-described configuration, the plurality of resonators 3 and 4 are integrally formed so that the resonators 3 and 4 extending from the upstream side to the downstream side are connected to each other, and the upstream side resonator 3 and the downstream side resonator 4 are connected to each other. A plurality of independent resonators 3 and 4 can be easily constructed by providing a lid 7 on the connecting opening 3c and a lid 8 on the outer opening 4c of the final downstream resonator 4. Thus, it is possible to configure and install multiple resonators 3 and 4 at the same time in one installation work without the need for complicated configuration and work such as mounting each resonator individually as in the conventional case. Since the resonators 3 and 4 are integrated and integrated into one, the mounting space can be made smaller than that of the conventional one in which the resonators are individually mounted. Furthermore, when the resonators 3 and 4 are preliminarily connected to each other to form a single molded product, the manufacturing thereof can be made simpler, easier, and cheaper.

In addition, since the downstream opening 4c of the opening 3c communicating the resonators 3 and 4 is successively larger, the hand is inserted from the downstream outer opening 4c to the upstream side. A plurality of resonators 3 and 4 having independent volumes can be simply and easily constructed by sequentially attaching the lids from the opening 3c.

As shown in FIG. 2, the two resonators 3 and 4 are integrally formed by blow molding or the like so that the two resonators 3 and 4 are integrally formed as one combined body. You can

Needless to say, the present invention can be similarly applied to the case where three or more resonators are provided.

[0020]

[Effect of the device]

 As described above in detail, according to the resonator mounting structure of the present invention according to claim 1, in the resonator mounting structure in which a plurality of resonators are connected to the intake passage of the engine, the connection port to the intake passage is Separately, a plurality of resonators having different capacities are connected and integrally provided, and a lid is provided at the opening where the upstream resonator is connected to the downstream resonator, and at the end of the final downstream resonator. Since the opening is also equipped with a lid, each resonator is integrated and integrated as one integrated unit, so multiple resonators can be installed at the same time in one installation operation. It is very easy to manufacture, and the mounting location is small, and by covering each opening, several independent resonators can be easily configured. There is a point.

According to the resonator mounting structure of the present invention according to claim 2, the opening of the downstream resonator is formed to be larger in size than the opening of the upstream resonator. Therefore, by inserting the hand from the outermost opening on the most downstream side and closing the lid from the opening on the upstream side in order, several independent and connected resonators can be easily and easily constructed. Get up.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a resonator mounting structure according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view of a resonator mounting structure according to another embodiment of the present invention.

FIG. 3 is a schematic cross-sectional view of a resonator mounting structure according to a conventional example.

[Explanation of symbols]

 1 intake passage 1a intake intake 2 air cleaner 3 upstream resonator 3a connection port 3b boundary wall 3c opening 4 downstream resonator 4a connection port 4c outer opening 5,6 hose 7,8 lid

Claims (2)

[Scope of utility model registration request] 1. A structure for mounting a resonator in which a plurality of resonators are connected to an intake passage of an engine, wherein a plurality of resonators having different capacities which are different from each other in connection with the intake passage are integrally provided so as to be connected to each other. The resonator is characterized in that the upstream side resonator is provided with a lid at an opening portion connected to the downstream side resonator, and a lid is also provided at an outer opening portion of the final downstream side resonator. Mounting structure. 2. The resonator mounting according to claim 1, wherein the opening of the downstream resonator is formed to be larger in size than the opening of the upstream resonator. Construction.