CN112539123A - Resonant cavity device capable of quickly changing noise reduction frequency - Google Patents
Resonant cavity device capable of quickly changing noise reduction frequency Download PDFInfo
- Publication number
- CN112539123A CN112539123A CN202011413952.8A CN202011413952A CN112539123A CN 112539123 A CN112539123 A CN 112539123A CN 202011413952 A CN202011413952 A CN 202011413952A CN 112539123 A CN112539123 A CN 112539123A
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- Prior art keywords
- cavity
- noise reduction
- reduction frequency
- resonant cavity
- rubber sleeve
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- 239000002991 molded plastic Substances 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 7
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of vehicle noise reduction, and discloses a resonant cavity device capable of quickly changing noise reduction frequency. The resonant cavity device capable of quickly changing the noise reduction frequency can adjust the noise reduction frequency of the resonant cavity in real time in the test process, and greatly shortens the development time and cost of an air inlet system.
Description
Technical Field
The invention relates to the technical field of vehicle noise reduction, in particular to a resonant cavity device capable of quickly changing noise reduction frequency.
Background
The noise index is important for the development of the vehicle air intake system, the frequency of the air intake noise can be confirmed through related testing means in the development stage of the vehicle air intake system, and designers can select different noise reduction devices to perform noise reduction processing on the frequency according to the frequency height and the frequency coverage range of the frequency. However, after the noise reduction device is installed in the intake system, the noise frequency of the intake system may change due to the error of the test means and the influence of the installation of the noise reduction device.
The conventional noise reduction resonant cavity device generally includes a cavity and a connecting pipe connected to the cavity, as shown in fig. 4, and the noise reduction frequency is determined by the length of the connecting pipe, the inner diameter cross section of the connecting pipe, and the volume of the cavity. In the development of the air inlet system, the resonant cavity is often manufactured in an injection molding mode, and the length of a connecting pipe, the inner diameter section area of the connecting pipe and the volume of the cavity are not changeable, so that the noise reduction frequency of the resonant cavity is not changeable.
In this case, if the noise reduction frequency of the noise reducer cannot be changed quickly, it is disadvantageous to confirm the noise frequency and shorten the development cycle of the intake system.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a resonant cavity device capable of quickly changing the noise reduction frequency, which can adjust the noise reduction frequency of the resonant cavity in real time in the test process and greatly shorten the development time and cost of an air inlet system.
In order to achieve the purpose, the resonant cavity device capable of quickly changing the noise reduction frequency comprises a cavity, a connecting pipe communicated with the cavity and a push rod, wherein a rubber sleeve is mounted at the top of the push rod, an opening is formed in the bottom of the cavity, and the rubber sleeve enters the cavity from the opening and is in interference fit with the cavity, so that the sealing in the cavity is realized.
Preferably, the upper portion in the cavity is provided with a limiting plate, so that the purpose of limiting the push rod to move upwards continuously is achieved, and the rubber sleeve is limited.
Preferably, the top of push rod has moulded plastics the boss, the bottom of rubber sleeve mould plastics have with boss complex recess, be convenient for the installation and the change of rubber sleeve.
Preferably, the cavity is made of transparent material, scale marks of the noise reduction frequency of the resonant cavity related to the position of the rubber sleeve are engraved on the outer portion of the cavity along the movement direction of the rubber sleeve, and when the push rod moves upwards, a user can confirm the noise reduction frequency of the resonant cavity at the moment by observing the relationship between the rubber sleeve and the scale marks on the cavity.
Preferably, the cavity and the connecting pipe are integrally injection-molded.
Preferably, the cavity is hermetically connected with the connecting pipe.
Compared with the prior art, the invention has the following advantages:
1. the method can help developers to adjust the noise reduction frequency of the resonant cavity in real time in the test process, and the trial production of resonant cavities with different noise reduction frequencies is not needed, so that the development time and the cost of the air inlet system are greatly shortened;
2. the noise reduction frequency of the resonant cavity is continuously changed, so that a developer can be assisted to more accurately confirm the noise frequency.
Drawings
FIG. 1 is a schematic structural diagram of a resonant cavity device capable of rapidly changing noise reduction frequency according to the present invention;
FIG. 2 is an exploded view of the plunger and rubber boot of FIG. 1;
FIG. 3 is a schematic view of the scale marks and rubber sleeve on the outer wall of the chamber of FIG. 1;
fig. 4 is a schematic structural diagram of a resonant cavity in the prior art.
The components in the figures are numbered as follows:
the device comprises a cavity 1, a connecting pipe 2, a push rod 3, a rubber sleeve 4, an opening 5, a limiting plate 6, a boss 7, a groove 8 and scale marks 9.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1 and 2, the resonant cavity device capable of rapidly changing noise reduction frequency of the present invention includes a cavity 1, a connecting pipe 2 communicated with the cavity 1, and a push rod 3, wherein a rubber sleeve 4 is installed on the top of the push rod 3, an opening 5 is formed at the bottom of the cavity 1, and the rubber sleeve 4 enters the cavity 1 from the opening 5 and is in interference fit with the cavity 1, so as to realize sealing in the cavity 1.
Wherein, the upper portion in the cavity 1 is equipped with limiting plate 6, plays the purpose that the restriction push rod 3 continues to shift up, carries on spacingly to rubber sleeve 4.
In this embodiment, as shown in fig. 2, a boss 7 is injection-molded at the top end of the push rod 3, and a groove 8 matched with the boss 7 is injection-molded at the bottom of the rubber sleeve 4, so as to facilitate installation and replacement of the rubber sleeve 4, during installation, the boss 7 on the push rod 3 is coated with an adhesive, and then the rubber sleeve 4 is installed on the boss 7.
In this embodiment, as shown in fig. 4, the cavity 1 is made of a transparent material, a scale mark 9 of the noise reduction frequency of the resonant cavity related to the position of the rubber sleeve 4 is engraved on the outside of the cavity 1 along the moving direction of the rubber sleeve 4, and when the push rod 3 moves upward, a user can confirm the noise reduction frequency of the resonant cavity by observing the relationship between the rubber sleeve 4 and the scale mark 9 on the cavity 1.
In this embodiment, the cavity 1, the connecting tube 2 and the push rod 3 are made of resin materials, and the cavity 1 and the connecting tube 2 are integrally injection-molded, or in other embodiments, after being manufactured separately, the cavity 1 and the connecting tube 2 are bonded by using an adhesive, so that the cavity 1 and the connecting tube 2 are hermetically connected. When in use, one end of the connecting pipe 2 is connected with the cavity 1, and the other end is connected with the air inlet system.
Compared with the prior art, the change of the volume of the resonant cavity is realized by the up-and-down movement of the push rod, and then the change of the noise reduction frequency of the resonant cavity is realized. In the testing process of the resonant cavity for the existing test, if the noise reduction frequency of the resonant cavity is found not to be consistent with the noise frequency of the air inlet system after the resonant cavity is installed, only the resonant cavity can be replaced (the resonant cavity is replaced and the resonant cavity with the new noise reduction frequency is manufactured), so that the development cycle and the cost of the air inlet system are increased. The embodiment can help developers to adjust the noise reduction frequency of the resonant cavity in real time in the test process, the trial production of resonant cavities with different noise reduction frequencies is not needed, the change of the noise reduction frequency of the resonant cavity can be realized only by moving the push rod 3 on the resonant cavity, and the development period of the air inlet system is favorably shortened and the development cost of the air inlet system is favorably reduced. Meanwhile, the noise reduction frequency of the resonant cavity is continuously changed in the embodiment, so that developers can be assisted to confirm the noise frequency more accurately.
The resonant cavity device capable of quickly changing the noise reduction frequency can help developers to adjust the noise reduction frequency of the resonant cavity in real time in the test process, and the trial production of resonant cavities with different noise reduction frequencies is not needed any more, so that the development time and the cost of an air inlet system are greatly shortened; and the noise reduction frequency of the resonant cavity is continuously changed, so that developers can be assisted to more accurately confirm the noise frequency.
Claims (6)
1. A resonant cavity device capable of rapidly changing noise reduction frequency comprises a cavity (1) and a connecting pipe (2) communicated with the cavity (1), and is characterized in that: still include push rod (3), rubber sleeve (4) are installed at the top of push rod (3), the bottom of cavity (1) is opening (5), rubber sleeve (4) are followed opening (5) get into in cavity (1) and with cavity (1) interference fit.
2. A resonator device for rapidly changing the noise reduction frequency according to claim 1, wherein: and a limiting plate (6) is arranged at the upper part in the cavity (1).
3. A resonator device for rapidly changing the noise reduction frequency according to claim 1, wherein: the top of push rod (3) is moulded plastics and is had boss (7), the bottom of rubber sleeve (4) is moulded plastics and is had with boss (7) complex recess (8).
4. A resonator device for rapidly changing the noise reduction frequency according to claim 1, wherein: the cavity (1) is made of transparent materials, and scale marks (9) of the noise reduction frequency of the resonant cavity related to the position of the rubber sleeve (4) are engraved on the outer portion of the cavity (1) along the moving direction of the rubber sleeve (4).
5. A resonator device for rapidly changing the noise reduction frequency according to claim 1, wherein: the cavity (1) and the connecting pipe (2) are integrally formed in an injection molding mode.
6. A resonator device for rapidly changing the noise reduction frequency according to claim 1, wherein: the cavity (1) is hermetically connected with the connecting pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413952.8A CN112539123A (en) | 2020-12-04 | 2020-12-04 | Resonant cavity device capable of quickly changing noise reduction frequency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011413952.8A CN112539123A (en) | 2020-12-04 | 2020-12-04 | Resonant cavity device capable of quickly changing noise reduction frequency |
Publications (1)
| Publication Number | Publication Date |
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| CN112539123A true CN112539123A (en) | 2021-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011413952.8A Pending CN112539123A (en) | 2020-12-04 | 2020-12-04 | Resonant cavity device capable of quickly changing noise reduction frequency |
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| CN (1) | CN112539123A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738476A (en) * | 2021-08-16 | 2021-12-03 | 安徽江淮汽车集团股份有限公司 | Air pipe assembly, noise elimination system and noise elimination method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070037818A (en) * | 2005-10-04 | 2007-04-09 | 두산인프라코어 주식회사 | Variable volume type resonator for vehicles |
| CN204402717U (en) * | 2015-01-12 | 2015-06-17 | 曼胡默尔滤清器（上海）有限公司 | Modular type tuning variable-volume resonant cavity |
| CN104832328A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Adjustable resonator and application method therefor |
| TW201805923A (en) * | 2016-08-12 | 2018-02-16 | 宏碁股份有限公司 | Silencer, electronic device and control method of electronic device |
| CN209523836U (en) * | 2019-03-11 | 2019-10-22 | 东风小康汽车有限公司重庆分公司 | Resonant cavity |
| CN211819845U (en) * | 2020-01-22 | 2020-10-30 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Noise reduction resonance device |
-
2020
- 2020-12-04 CN CN202011413952.8A patent/CN112539123A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070037818A (en) * | 2005-10-04 | 2007-04-09 | 두산인프라코어 주식회사 | Variable volume type resonator for vehicles |
| CN104832328A (en) * | 2014-12-19 | 2015-08-12 | 北汽福田汽车股份有限公司 | Adjustable resonator and application method therefor |
| CN204402717U (en) * | 2015-01-12 | 2015-06-17 | 曼胡默尔滤清器（上海）有限公司 | Modular type tuning variable-volume resonant cavity |
| TW201805923A (en) * | 2016-08-12 | 2018-02-16 | 宏碁股份有限公司 | Silencer, electronic device and control method of electronic device |
| CN209523836U (en) * | 2019-03-11 | 2019-10-22 | 东风小康汽车有限公司重庆分公司 | Resonant cavity |
| CN211819845U (en) * | 2020-01-22 | 2020-10-30 | 阿特拉斯·科普柯(无锡)压缩机有限公司 | Noise reduction resonance device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738476A (en) * | 2021-08-16 | 2021-12-03 | 安徽江淮汽车集团股份有限公司 | Air pipe assembly, noise elimination system and noise elimination method |
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Application publication date: 20210323 |