CN210003478U

CN210003478U - horizontally-opposed diaphragm type electric vacuum pump

Info

Publication number: CN210003478U
Application number: CN201920718965.2U
Authority: CN
Inventors: 李建忠
Original assignee: Shijiazhuang Jiaxin Automotive Brake Systems Co Ltd
Current assignee: Shijiazhuang Jiaxin Automotive Brake Systems Co Ltd
Priority date: 2019-05-20
Filing date: 2019-05-20
Publication date: 2020-01-31
Anticipated expiration: 2029-05-20

Abstract

The utility model provides an kind of horizontal opposition diaphragm type electric vacuum pump, including the pump body, DC motor, the motor shaft, linkage assembly, end cover and diaphragm subassembly, the both sides of the pump body are equipped with the end cover, DC motor sets up in pump body bottom, DC motor passes through the motor shaft and drives linkage assembly motion, the horizontal symmetry of diaphragm subassembly sets up in the cavity of the pump body and is close to end cover department, linkage assembly is connected with the diaphragm subassembly, when DC motor during operation, linkage assembly drives the diaphragm subassembly and stretches out and indents simultaneously to form the change of space volume between end cover and the diaphragm subassembly.

Description

horizontally-opposed diaphragm type electric vacuum pump

Technical Field

The utility model relates to an electric vacuum pump field, more specifically say and relate to horizontal opposition diaphragm type electric vacuum pump.

Background

However, due to technical restrictions and factors of real national conditions, most of our country can only refit electric vehicles based on the existing internal combustion engine vehicles, most of cars adopt a vacuum power-assisted servo brake system to use both manpower and power.

The starting time characteristic refers to the time taken for the vacuum degree in the volume to reach the set upper limit vacuum degree from the standard air pressure under the premise of the recovery time characteristic refers to the time taken for the vacuum degree in the volume to reach the set upper limit vacuum degree from the set lower limit value, the vacuum degree in the brake vacuum booster can be rapidly reduced under the influence of the brake strength when the automobile is braked, if the vacuum degree in the booster is reduced below the allowable value of the working range, the pedal is sensed to sink, and the brake vacuum is also damages.

To satisfy these requirements, the exhaust gas amount of the vacuum pump is increased. Namely, the volume of the cylinder is increased, so that the volume of the vacuum pump is increased. The technical support is provided for the automobile with compact design of an automobile engine room and small size of required parts.

Disclosure of Invention

The utility model overcomes prior art is not enough, provides kind of horizontal opposition diaphragm type electric vacuum pump.

The purpose of the utility model is realized by the following technical scheme.

horizontal opposition diaphragm type electric vacuum pump, including the pump body, DC motor, motor shaft, linkage subassembly, end cover and diaphragm subassembly, the both sides of the pump body are equipped with the end cover, DC motor sets up the pump body bottom, DC motor passes through the motor shaft drives the linkage subassembly motion, diaphragm subassembly horizontal symmetry sets up in the cavity of the pump body and be close to end cover department, the linkage subassembly with the diaphragm subassembly is connected, works as DC motor during operation, the linkage subassembly drives the diaphragm subassembly stretches out and contracts simultaneously, thereby forms the end cover with the space volume change between the diaphragm subassembly.

, the linkage assembly comprises a connecting rod assembly, a bearing and an eccentric crank, the eccentric crank is connected with the motor shaft, the connecting rod assembly is two bent connecting rods, and the eccentric crank is connected with the connecting rod assembly through the bearing.

, the two ends of the diaphragm assembly are clamped by the pump body and the end cover, and the middle of the diaphragm assembly is connected with the bent connecting rod through screw threads.

And , the pump body is provided with a airflow channel and a second airflow channel, the end cover is provided with two one-way valve plates, and the two one-way valve plates are respectively arranged at the air inlet of the airflow channel and the air inlet of the second airflow channel to control the air circulation in the airflow channel and the air circulation in the second airflow channel.

And , the two one-way valve plates arranged on the single-side valve cover have opposite movement directions.

, the airflow channel is connected to a unit that requires a vacuum source.

, the second airflow channel is connected with the inner cavity of the pump body, the inner cavity of the pump body is connected with an exhaust chamber, an exhaust one-way valve and an exhaust silencer are arranged in the exhaust chamber, and the gas in the inner cavity of the pump body is exhausted into the atmosphere through the exhaust silencer and the exhaust one-way valve.

, the exhaust silencer is silencing cotton.

And , connecting the pump body with the DC motor through a motor fixing screw.

, the fixing screw is sleeved with shock absorbing rubber.

The utility model has the advantages that:

the horizontally and symmetrically arranged diaphragm assemblies enable the volume of the pump body to be relatively reduced, the volume of the pump body is relatively reduced, the space of a limited engine room can be saved, raw materials can be saved, and the production cost can be reduced;

the diaphragm components which are horizontally and symmetrically arranged vibrate synchronously in the working process,

the pump body and the end cover are formed by nylon injection molding, so that the pump body is difficult to generate high temperature damage to the vacuum pump;

the motor fixing screw with double functions can be conveniently connected with fixing supports with different mounting positions, and has a better shock-absorbing function.

The electric vacuum pump has long service life and flexible installation place and mode. In addition, the carbon dioxide emission and the fuel consumption are effectively reduced, so that the electric vacuum pump becomes a powerful candidate for replacing a mechanical vacuum pump, the vacuum degree of a brake vacuum booster can be ensured, and the brake performance of an automobile is met; the vacuum booster can provide a reliable vacuum source no matter which power source is used by the automobile, so that the brake vacuum booster is always in a working state.

Drawings

FIG. 1 is a view showing an overall appearance of a diaphragm type electric vacuum pump;

FIG. 2 is a schematic view of a horizontally opposed diaphragm type electric vacuum pump;

FIG. 3 is a view of the end cap and check valve;

fig. 4 is a structure diagram of the shock-absorbing flexible connection between the motor fixing screw and the seat plate.

In the figure:

1. the device comprises a direct current motor, a motor shaft, a motor cover, a diaphragm assembly, a connecting rod assembly, a bearing, a muffler, an exhaust one-way valve, a pump body, an eccentric crank, a motor cover, a motor fixing screw, a valve sheet 13, a valve sheet , a valve sheet 14, a valve sheet II, a valve sheet III, a.

Detailed Description

The technical solution of the present invention is illustrated in step by the following specific examples.

As shown in fig. 1-4, horizontal opposed diaphragm type electric vacuum pumps comprise a pump body 9, a dc motor 1, a motor shaft 2, a linkage assembly, an end cover 3 and a diaphragm assembly 4, wherein the pump body 9 is formed by reinforced nylon injection molding, and the end cover 3 is formed by reinforced nylon injection molding and is internally attached with an air passage, the linkage assembly comprises a connecting rod assembly, a bearing 6 and an eccentric crank 10, the eccentric crank 10 is connected with the motor shaft 2, the end cover 3 is arranged at two sides of the pump body 9, the dc motor 1 is arranged at the bottom of the pump body 9, the dc motor 1 is connected with the eccentric crank 10 through the motor shaft 2 to drive the eccentric crank 10 to move, the eccentric crank 10 is connected with the connecting rod assembly 5 through the bearing 6, the connecting rod assembly 5 is connected with the diaphragm assembly 4, the diaphragm assembly 4 is horizontally and symmetrically arranged in a cavity of the pump body 9 and is close to the end cover 3, and when the dc motor 1 works;

the connecting rod assembly 5 is two bent connecting rods, and the eccentric crank 10 is connected with the connecting rod assembly 5 through the bearing 6, so that the direct current motor 1 can drive the two complementary bent connecting rods to move simultaneously;

the two ends of the diaphragm component 4 are clamped by the pump body 9 and the end cover 3, and the middle part of the diaphragm component 4 is in threaded connection with the bent connecting rod;

the pump body 9 is provided with a th air flow channel and a second air flow channel, the end cover 3 is provided with two one-way valve plates 13 and 14, the two one-way valve plates 13 and 14 are respectively arranged at air inlets of the th air flow channel and the second air flow channel to control air circulation in the th air flow channel and the second air flow channel, a th air flow channel on the pump body is communicated with a unit requiring a vacuum source, the volume change sucks air in a vacuum system connected through a vacuum tube under the action of the one-way valve plate 13, the second air flow channel is communicated with an inner cavity of the pump body 9, the inner cavity of the pump body 9 is communicated with an exhaust cavity under the action of the one-way valve plate 14, an exhaust one-way valve 8 and an exhaust silencer 7 are arranged in the exhaust cavity, the air is exhausted into the atmosphere after sequentially passing through the exhaust one-way valve 8 and the exhaust silencer 7, the other functions of the one-way valve plate 8 are used for preventing external water from entering the inner cavity of the pump body 9 under the action of the exhaust silencer 7, the exhaust silencer 7 is cotton, the action of the first one-way valve plate 13 and the second one-way valve plate 14, namely, when the one-way valve plate assembly 4 moves away from the air suction valve plate 3, the air flow channel is opened, the lower end cover 3 is closed, the lower one-way valve plate 14, the lower end cover 14 is opened, the one-way.

The pump body 9 is connected with the direct current motor 1 through a motor fixing screw 12; the motor fixing screw 12 is sleeved with a shock absorbing rubber 15.

The above specification describes embodiments of the present invention, but the above description is only the preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention.

Claims

The horizontally-opposed diaphragm type electric vacuum pump is characterized in that the diaphragm components are horizontally and symmetrically arranged in a cavity of the pump body and close to the end covers, the linkage components are connected with the diaphragm components, and when the direct current motor works, the linkage components drive the diaphragm components to simultaneously extend out and retract so as to form space volume change between the end covers and the diaphragm components.
2. A horizontally opposed-diaphragm, electric vacuum pump according to claim 1, wherein: the linkage assembly comprises a connecting rod assembly, a bearing and an eccentric crank, the eccentric crank is connected with the motor shaft, the connecting rod assembly comprises two bent connecting rods, and the eccentric crank is connected with the connecting rod assembly through the bearing.
3. A horizontally opposed-diaphragm, electric vacuum pump according to claim 2, wherein: the outer ring of the diaphragm assembly is clamped by the pump body and the end cover, and the middle part of the diaphragm assembly is in threaded connection with the bent connecting rod.
4. The horizontally opposed diaphragm type electric vacuum pump according to claim 1, wherein the pump body is provided with a th air flow channel and a second air flow channel, the end cap is provided with two check valve plates, and the two check valve plates are respectively arranged at air inlets of the th air flow channel and the second air flow channel to control air circulation in the th air flow channel and the second air flow channel.
5. A horizontally opposed-diaphragm electric vacuum pump according to claim 4, wherein: and the two one-way valve plates arranged on the end cover have opposite movement directions.
6. The horizontally opposed-diaphragm, electrically-driven vacuum pump according to claim 4, wherein said -th airflow passage is in communication with a unit requiring a vacuum source.
7. A horizontally opposed-diaphragm electric vacuum pump according to claim 4, wherein: the second airflow channel is communicated with the inner cavity of the pump body, the inner cavity of the pump body is communicated with an exhaust cavity, an exhaust one-way valve and an exhaust silencer are arranged in the exhaust cavity, and gas in the inner cavity of the pump body is exhausted into the atmosphere through the exhaust silencer and the exhaust one-way valve.
8. A horizontally opposed-diaphragm, electric vacuum pump according to claim 7, wherein: the exhaust silencer is silencing cotton.
9. A horizontally opposed-diaphragm, electric vacuum pump according to claim 1, wherein: the pump body is connected with the direct current motor through a motor fixing screw.
10. A horizontally opposed-diaphragm, electric vacuum pump according to claim 9, wherein: the fixing screw is sleeved with shock-absorbing rubber.