CN213574611U - A amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump - Google Patents
A amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump Download PDFInfo
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- CN213574611U CN213574611U CN202022429374.9U CN202022429374U CN213574611U CN 213574611 U CN213574611 U CN 213574611U CN 202022429374 U CN202022429374 U CN 202022429374U CN 213574611 U CN213574611 U CN 213574611U
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- vacuum pump
- electronic vacuum
- corrugated pipe
- cover body
- silencing cover
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Abstract
The utility model provides an amortization lid, electronic vacuum pump assembly and vehicle for electronic vacuum pump, the amortization lid is including amortization lid body and elastic connection ear, amortization lid body is the tube-shape of back-off, the elastic connection ear has two at least, follows the outside circumference of amortization lid body sets up, the elastic connection ear is used for cup jointing to electronic vacuum pump makes the amortization lid with electronic vacuum pump fixed connection. The noise reduction cover is sleeved on the electronic vacuum pump, so that the direct transmission of the noise in the electronic vacuum pump chamber is effectively reduced and prevented, an obvious noise reduction effect is realized in a high-frequency section, the noise reduction cover is convenient to mount and fix, and no additional mechanical fastener is needed.
Description
Technical Field
The utility model relates to an electron vacuum pump technical field especially relates to amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump.
Background
Electronic vacuum pumps are important components in vehicle auxiliary brake systems. The electronic vacuum pump usually adopts a blade rotating mode (a rotary vane type), when the electronic vacuum pump works in an electrified mode, a motor drives the blades to rotate, so that the volume of an inner cavity changes circularly, the compression process of sucked air is completed, and meanwhile, large noise is generated after all parts in a pump cavity collide and rub with the inner wall of the cavity.
The noise level of the electronic vacuum pump is an important index in the NVH performance evaluation of the whole vehicle. In general, noise can be classified into air-borne noise and structure-borne noise through propagation paths. The structure transmission noise mainly comes from the structure vibration and is transmitted to the automobile body through mechanical connection when the vacuum pump is in a working state, and the noise can be controlled within a reasonable range through internal improvement and external multiple vibration reduction scheme design in the development stage of the vacuum pump. However, the airborne noise mainly comes from the collision compression and expansion process of the air flow and the inside of the pump body in the processes of negative pressure air extraction, cavity periodic compression, high pressure discharge and the like during the operation of the vacuum pump. The current noise reduction solution for vacuum pumps in respect of airborne noise is usually to add a silencer at the air outlet. Silencers are used primarily to attenuate low frequency noise, but are difficult to work with high frequency noise.
SUMMERY OF THE UTILITY MODEL
In order to overcome the technical defect, the utility model aims to provide a can effectively subdue amortization lid, electron vacuum pump assembly and vehicle that are used for electron vacuum pump of high frequency noise.
The utility model discloses a silencing cover for an electronic vacuum pump,
the silencing cover comprises a silencing cover body and an elastic connecting lug;
the silencing cover body is in a reversely buckled barrel shape;
the elastic connecting lugs are arranged along the circumferential direction of the outer side of the silencing cover body and are used for being sleeved on the electronic vacuum pump to enable the silencing cover to be fixedly connected with the electronic vacuum pump.
Preferably, the elastic connection lug comprises a first bellows, a second bellows and a U-shaped rigid connection piece;
the first corrugated pipe and the second corrugated pipe respectively extend outwards from the outer side of the silencing cover body;
one ends, far away from the silencing cover body, of the first corrugated pipe and the second corrugated pipe are fixedly connected with two ends of the rigid connecting piece respectively.
Preferably, the material of the silencing cover body is silicon rubber.
Preferably, the number of the elastic connecting lugs is two, and the elastic connecting lugs are symmetrically arranged on the outer side of the silencing cover body.
The utility model also discloses an electron vacuum pump assembly, electron vacuum pump assembly includes electron vacuum pump and foretell amortization lid.
Preferably, the electronic vacuum pump comprises a motor, a flange and a pump cover;
the flange is fixedly arranged above the motor, and the pump cover is fixedly arranged above the flange;
the shape of the inner side of the silencing cover body is matched with that of the outer side of the pump cover, the silencing cover body is sleeved on the outer side of the pump cover, the inner side of the silencing cover body is attached to the outer side of the pump cover, and the elastic connecting lug is sleeved on a flange of the electronic vacuum pump.
Preferably, the elastic connecting lug comprises a first corrugated pipe, a second corrugated pipe and a U-shaped rigid connecting piece;
the first corrugated pipe and the second corrugated pipe respectively extend outwards from the outer side of the silencing cover body;
one ends of the first corrugated pipe and the second corrugated pipe, which are far away from the silencing cover body, are fixedly connected with two ends of the rigid connecting piece respectively;
the flange is circumferentially provided with at least two mounting ear plates, the mounting ear plates correspond to the elastic connecting ears in position, the mounting ear plates extend from the flange to the direction far away from the pump cover, and a gap is formed between the mounting ear plates and the motor;
first bellows, second bellows buckle extremely rigid connection spare is located in the clearance, elastic connection ear cup joint connects to the installation otic placode, the amortization lid with electronic vacuum pump realizes fixed connection.
Preferably, the flange is connected with an air inlet pipe, an air outlet pipe and a power supply connector.
The utility model also discloses a vehicle, including foretell electron vacuum pump assembly.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the silencing cover body is sleeved on the electronic vacuum pump through the elastic connecting lug, so that the silencing cover body can be sleeved on the outer side of the pump cover of the electronic vacuum pump, the direct transmission of the noise in the pump cavity of the electronic vacuum pump is effectively reduced and prevented, and the silencing cover has an obvious silencing effect in a high-frequency section (1500-10000 Hz).
2. The elastic connecting lug is adopted to facilitate the installation and fixation of the silencing cover, and no additional mechanical fastener is needed.
Drawings
FIG. 1 is a schematic diagram of an electronic vacuum pump according to the prior art;
fig. 2 is a schematic structural view of a silencing cover according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a vacuum pump assembly having the muffler cover of fig. 2 according to an embodiment of the present invention.
Reference numerals:
100-motor, 200-flange, 210-mounting lug plate, 220-shock pad, 230-power supply connector, 300-pump cover, 400-silencing cover, 410-silencing cover body, 420-elastic connecting lug, 421-first corrugated pipe, 422-second corrugated pipe, 423-rigid connecting piece.
Detailed Description
The advantages of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1, a schematic structural diagram of an electronic vacuum pump in the prior art is shown, the electronic vacuum pump includes a motor 100, a flange 200, and a pump cover 300. Flange 200 fixed mounting in motor 100 top, pump cover 300 fixed mounting in flange 200 top forms the cavity between pump cover 300 and flange 200, can set up spare parts such as rotor in the cavity. Noise generated during the compression and expansion process by the collision of the air flow inside the cavity is transmitted outward through the pump cover 300. The flange 200 is connected with an air inlet pipe, an air outlet pipe and a power supply connector 230. The flange 200 is further provided with a plurality of mounting lugs 210, the mounting lugs 210 extend from the flange 200 to a direction away from the pump cover 300, a gap exists between the mounting lugs 210 and the motor 100, and the mounting lugs 210 are provided with shock absorbing pads 220 up and down.
Referring to fig. 2 and 3, the present invention provides a silencing cover 400 for an electronic vacuum pump and a vacuum pump assembly having the silencing cover 400. The silencing cover 400 of the present application is not the pump cover 300 of the electronic vacuum pump, but is the silencing cover 400 added on the outer side of the pump cover 300 of the existing electronic vacuum pump, and the silencing cover 400 and the electronic vacuum pump jointly form an electronic vacuum pump assembly. The sound-deadening cap 400 includes a sound-deadening cap body 410 and elastic coupling lugs 420. The silencing cover body 410 is in a cylindrical shape and is reversely buckled, and the shape of the inner side of the silencing cover body 410 is matched with the shape of the outer side of the electronic vacuum pump cover 300, so that the silencing cover body 410 can be sleeved on the outer side of the electronic vacuum pump cover 300 and attached to the outer side of the electronic vacuum pump cover. The elastic connection lugs 420 are at least two and are circumferentially and fixedly arranged along the outer side of the silencing cover body 410, and the elastic connection lugs 420 can be bent and have certain elasticity and are used for being sleeved on the electronic vacuum pump to enable the silencing cover 400 to be fixedly connected with the electronic vacuum pump. In this embodiment, the number of the elastic connection lugs 420 is two, and the elastic connection lugs 420 are symmetrically arranged on the outer side of the sound attenuation cover body 410, that is, arranged at two opposite ends of the outer side of the sound attenuation cover body 410. The position of the elastic connection lug 420 may correspond to the position of the mounting lug 210 on the flange 200, so that the elastic connection lug 420 may be sleeved between the mounting lug 210 and the motor 100. Referring to fig. 3, in the present embodiment, the sound-deadening cap body 410 is sleeved on and attached to the outside of the pump cover 300 of the electronic vacuum pump, and two elastic connecting lugs 420 symmetrically disposed on the outside of the sound-deadening cap body 410 are respectively sleeved on the mounting lug 210 (in fig. 3, the elastic connecting lugs 420 are not sleeved on the mounting lug 210, and only schematic illustration of the sleeving direction is given), so as to fixedly connect the elastic connecting lugs 420 with the flange 200, that is, with the electronic vacuum pump.
Specifically, in the present embodiment, the elastic connection lug 420 includes a first bellows 421, a second bellows 422, and a U-shaped rigid connection 423. The first bellows 421 and the second bellows 422 respectively extend outward from the outside of the sound-deadening cap body 410, one ends of the first bellows 421 and the second bellows 422, which are far away from the sound-deadening cap body 410, are respectively and fixedly connected with two ends of the rigid connecting member 423, and the bellows can be bent downward to enable the rigid connecting member 423 to be sleeved in a gap between the mounting ear plate 210 and the motor 100. In this embodiment, the sound-absorbing cap body 410 is made of silicon rubber, which has a good sound-absorbing effect and can provide a certain deformation when the elastic connection lug 420 is connected to the flange 200, so as to connect with the flange. In other embodiments, the elastic connection lug 420 may be a strip-shaped elastic rubber material, which is integrally "C" shaped or "U" shaped, and both ends of the elastic connection lug are fixed to the outer side of the sound deadening cap body 410, and are sleeved to the flange 200 by its elasticity.
The utility model also provides a vehicle, be provided with foretell vacuum pump assembly on the vehicle.
The technical scheme of this application, through increase extra amortization lid in current electronic vacuum pump cover outside, subdue and prevent the direct propagation of electronic vacuum pump indoor noise, verify through the NVH experiment that it has obvious noise cancelling effect in high frequency channel (1500) 10000Hz), and adopt elastic connection ear and electronic vacuum pump to carry out fixed connection in the aspect of structural design, need not extra mounting process, the installation and the fixing of the amortization lid of being convenient for, make the amortization lid all have the function of making an uproar of falling in whole life cycle. The utility model provides a amortization lid simple to operate does not have mechanical fastener, can not lead to the fact the influence to the assembly of electron vacuum pump and whole car installation, can regard as optional standard component in the vacuum pump development assembly. The noise reduction effect of the noise reduction cover is feasible through experimental verification, and the NVH performance of a vacuum pump monomer and the whole vehicle can be effectively improved.
It should be noted that the embodiments of the present invention have better practicability and are not intended to limit the present invention in any way, and any person skilled in the art may change or modify the technical contents disclosed above to equivalent effective embodiments, but all the modifications or equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (9)
1. A silencing cover for an electronic vacuum pump is characterized in that,
the silencing cover comprises a silencing cover body and an elastic connecting lug;
the silencing cover body is in a reversely buckled barrel shape;
the elastic connecting lugs are arranged along the circumferential direction of the outer side of the silencing cover body and are used for being sleeved on the electronic vacuum pump to enable the silencing cover to be fixedly connected with the electronic vacuum pump.
2. The sound dampening lid of claim 1,
the elastic connecting lug comprises a first corrugated pipe, a second corrugated pipe and a U-shaped rigid connecting piece;
the first corrugated pipe and the second corrugated pipe respectively extend outwards from the outer side of the silencing cover body;
one ends, far away from the silencing cover body, of the first corrugated pipe and the second corrugated pipe are fixedly connected with two ends of the rigid connecting piece respectively.
3. The sound dampening lid of claim 1,
the silencing cover body is made of silicon rubber.
4. The sound dampening lid of claim 1,
the number of elastic connection ear is two, the elastic connection ear is in the outside symmetry of amortization lid body sets up.
5. An electronic vacuum pump assembly, comprising an electronic vacuum pump and a sound-deadening lid as claimed in any one of claims 1 to 4.
6. The electronic vacuum pump assembly of claim 5,
the electronic vacuum pump comprises a motor, a flange and a pump cover;
the flange is fixedly arranged above the motor, and the pump cover is fixedly arranged above the flange;
the shape of the inner side of the silencing cover body is matched with that of the outer side of the pump cover, the silencing cover body is sleeved on the outer side of the pump cover, the inner side of the silencing cover body is attached to the outer side of the pump cover, and the elastic connecting lug is sleeved on a flange of the electronic vacuum pump.
7. The electronic vacuum pump assembly of claim 6,
the first corrugated pipe, the second corrugated pipe and the U-shaped rigid connecting piece are connected with the elastic connecting lugs;
the first corrugated pipe and the second corrugated pipe respectively extend outwards from the outer side of the silencing cover body;
one ends of the first corrugated pipe and the second corrugated pipe, which are far away from the silencing cover body, are fixedly connected with two ends of the rigid connecting piece respectively;
the flange is circumferentially provided with at least two mounting ear plates, the mounting ear plates correspond to the elastic connecting ears in position, the mounting ear plates extend from the flange to the direction far away from the pump cover, and a gap is formed between the mounting ear plates and the motor;
first bellows, second bellows buckle extremely rigid connection spare is located in the clearance, elastic connection ear cup joint connects to the installation otic placode, the amortization lid with electronic vacuum pump realizes fixed connection.
8. The electronic vacuum pump assembly of claim 6,
and the flange is connected with an air inlet pipe, an air outlet pipe and a power supply connector.
9. A vehicle comprising an electronic vacuum pump assembly according to any of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429374.9U CN213574611U (en) | 2020-10-27 | 2020-10-27 | A amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022429374.9U CN213574611U (en) | 2020-10-27 | 2020-10-27 | A amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213574611U true CN213574611U (en) | 2021-06-29 |
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ID=76530134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022429374.9U Active CN213574611U (en) | 2020-10-27 | 2020-10-27 | A amortization lid, electron vacuum pump assembly and vehicle for electron vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213574611U (en) |
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2020
- 2020-10-27 CN CN202022429374.9U patent/CN213574611U/en active Active
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