CN211623638U

CN211623638U - Electric air compressor

Info

Publication number: CN211623638U
Application number: CN201922466376.2U
Authority: CN
Inventors: 王玉亮; 姚灿均
Original assignee: Zhejiang Vie Qifu Auto Parts Co ltd
Current assignee: Zhejiang Vie Qifu Auto Parts Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-02
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to a compressor field specifically discloses an electric air compressor. The electric air compressor comprises a machine body and a mounting plate; the positioning device comprises a positioning bolt, a positioning bolt and a positioning bolt, wherein the positioning bolt is arranged in the positioning bolt; the installation positioning hole comprises a first positioning section, and the installation base hole comprises a second positioning section; the first positioning section and the second positioning section have the same diameter and are communicated with each other to form a positioning space; an elastic positioning sleeve sleeved outside the positioning bolt is further arranged in the space, and an opening is formed in the circumferential direction of the elastic positioning sleeve; the motor is connected with the mounting plate through two groups of elastic bolt positioning assemblies. The electric air compressor effectively ensures the position tolerance of the motor and the compression assembly.

Description

Electric air compressor

Technical Field

The utility model relates to a compressor field, concretely relates to electric air compressor.

Background

The air compressor is a main body of an air source device, and is a device for converting mechanical energy of a prime mover (usually, an electric motor) into gas pressure energy, and is an air pressure generating device for compressing air. Chinese patent application publication No. CN 109611311a discloses an oil-free piston type two-stage air compressor for vehicles, which includes a motor and a crankcase, wherein the motor is directly connected to the crankcase, so that although the installation accuracy between the crankcase and the motor can be ensured, the crankcase is loaded greatly, and the connection is unreliable after long-time use, and the connection mode limits the function of the motor to a certain extent, and is not suitable for high-pressure occasions.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an electric air compressor has guaranteed the position tolerance of motor and compression assembly.

In order to solve the technical problem, the utility model provides a technical scheme as follows: the electric air compressor comprises a machine body and a mounting plate, wherein the machine body comprises a motor and a compression assembly; the positioning device comprises a positioning bolt, a positioning bolt and a positioning bolt, wherein the positioning bolt is arranged in the positioning bolt; the installation positioning hole comprises a first positioning section, and the length of the positioning section is less than or equal to that of the positioning hole; the installation base hole comprises a second positioning section, and the length of the second positioning section is less than or equal to that of the installation base hole; the first positioning section and the second positioning section have the same diameter and are communicated with each other to form a positioning space; an elastic positioning sleeve sleeved outside the positioning bolt is further arranged in the positioning space, and an opening is formed in the circumferential direction of the elastic positioning sleeve; the motor is connected with the mounting plate through two groups of elastic bolt positioning assemblies.

The elastic positioning sleeve is matched with the positioning space, so that the gap between the positioning screw and the positioning space is eliminated on the premise of ensuring the connection performance of the positioning screw, and the coaxiality of the mounting positioning hole and the mounting base hole is ensured. The compression assembly and the motor are forcibly positioned by the two groups of elastic bolt positioning assemblies respectively, the positioning accuracy is high, and the relative position accuracy between the compression assembly and the motor is ensured. Compared with the air compressor in the prior art, the air compressor adopts the connection form, the installation of the motor is more convenient and faster on the premise of ensuring the installation precision, the limitation on the size and the function of the motor is eliminated, and the air compressor is more suitable for a high-power compressor.

Preferably, a plurality of auxiliary screws are further arranged between the compression assembly and the mounting plate, and a plurality of auxiliary screws are further arranged between the motor and the mounting plate. The reliability of the installation of the compression assembly and the motor is improved.

Preferably, the compression assembly is provided with a mounting positioning hole for positioning and mounting the compression assembly, and the mounting positioning hole for positioning and mounting the motor is provided on the mounting plate.

Preferably, the compression assembly comprises a transmission case, the bottom of the transmission case is open, an oil pan is hermetically connected to the bottom of the transmission case, and the oil pan is sunken downwards to form an oil storage cavity; the compression assembly is connected with the mounting plate through a transmission case.

Preferably, the mounting plate is provided with a containing hole corresponding to the oil pan, and the oil pan extends into the containing hole and is connected with the mounting plate through a transmission case; the bottom of mounting panel is equipped with a plurality of shock attenuation supports, and the whole local compactness of compressor is pleasing to the eye.

Preferably, the compression assembly further comprises an air cylinder and a cylinder cover, an air inlet cavity and an air exhaust cavity are formed in the cylinder cover, and a hydraulic air release switch communicated with the air exhaust cavity is arranged on the cylinder cover.

When the gas pressure of a gas storage tank communicated with the exhaust cavity reaches the upper limit of the specified pressure of the vehicle, the pressure sensor controls the electric air compressor to stop working through an electric signal, and at the moment, the hydraulic air release switch empties the gas from an inlet of the vehicle gas storage tank to the exhaust cavity of the cylinder cover. When the compressor is restarted, the hydraulic bleed switch is closed and the air compressor is started without load.

Drawings

FIG. 1 is a schematic view of an electric air compressor including a cooling assembly according to an embodiment;

FIG. 2 is an exploded view of a cooling module in the electric air compressor including the cooling module according to the present embodiment;

FIG. 3 is a schematic diagram of a cylinder head of the electric air compressor including a cooling module according to the present embodiment;

FIG. 4 is a schematic view of a heat sink of the electric air compressor including a cooling assembly according to the present embodiment;

FIG. 5 is a schematic view of an installation structure of a motor, a compression assembly and an installation plate in the electric air compressor including the cooling assembly according to the present embodiment;

FIG. 6 is a schematic view showing the construction of a transmission case in the electric air compressor including the cooling unit according to the present embodiment;

FIG. 7 is a schematic view of one form of a resilient bolt positioning assembly for an electric air compressor including a cooling assembly according to the present embodiment;

FIG. 8 is a schematic view of another embodiment of a resilient bolt positioning assembly for an electric air compressor including a cooling assembly according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

As shown in fig. 1-3, an electric air compressor comprises a motor 2 and a compression assembly 1, wherein the compression assembly 1 comprises a transmission shaft, an output end of the motor 2 is connected with the transmission shaft through a coupling, and the output end of the motor 2, the transmission shaft and the coupling form a rotating unit together. The compression assembly 1 comprises a cylinder and a transmission case 12, the cylinder comprises a cylinder body 13 and a cylinder cover 11, and an air inlet cavity 114 and an air outlet cavity 111 are arranged in the cylinder cover 11. And mounting holes for mounting the transmission shaft are respectively formed in two sides of the transmission case 12. As shown in fig. 6, the transmission case 12 is integrally formed with the cylinder block 13. The position precision of the cylinder body 13 relative to the transmission case 12 is ensured, the manufacturing error is reduced, the whole machine is more stable in operation, the noise and the vibration are reduced, and meanwhile, the appearance structure is compact and attractive. The bottom of the transmission case 12 is open, an oil pan 14 is hermetically connected to the bottom of the transmission case 12, and the oil pan 14 is recessed downward to form an oil storage chamber 141. And mounting holes for mounting the transmission shaft are respectively formed in two sides of the transmission case 12. An end cover is arranged on the mounting hole on one side of the transmission case 12 far away from the motor 2, and a bearing hole (not shown in the figure) is arranged on the end cover. An oil pump 6 is arranged on the outer side of the end cover, and a lubricating hole (not shown in the figure) communicated with the bearing hole is formed in the oil pump 6. The oil pump 6 is preferably a gear pump, and the oil pump 6 and the transmission shaft are connected with a connecting arm at one end far away from the motor 2 and synchronously rotate along with the transmission shaft

As shown in fig. 1-4, the cylinder head further includes a cooling assembly, the cooling assembly includes a radiator 31 and a cooling channel 113 disposed in the cylinder head 11, an oil outlet 115 of the cooling channel 113 is communicated with an oil inlet 112 of the radiator 31 through an oil delivery pipe 32. The radiator 31 is disposed between the motor 2 and the compression assembly 1, and the rotary unit passes through the radiator 31. The radiator 31 includes a wind guard 312, and the wind guard 312 is provided with a through hole 313 corresponding to the rotation unit. A heat dissipation unit 311 is distributed on one side of the wind shield 312 facing the fan 38, the heat dissipation unit 311 includes a heat dissipation pipe communicated with the oil pipeline 32, and heat dissipation fins are distributed between the heat dissipation pipe. The airflow generated by the fan 38 impinges on the wind shield 312 and is dispersed to both sides and flows to the heat dissipation unit 311, thereby cooling the heat dissipation unit 311.

As shown in fig. 5, the cooling device further includes an oil storage chamber 141, the oil storage chamber 141 is communicated with the oil inlet 112 of the cooling channel 113 through the oil inlet pipe 35, and the oil outlet 115 of the radiator 31 is communicated with the oil storage chamber 141 through the oil return channel. The oil pump 6 is arranged on the oil inlet pipe 35. The oil return pipe 33 is provided with a filter 34 for filtering the lubricating oil. The cooling assembly further comprises a fan 38 arranged on one side of the radiator 31 and arranged towards the radiator 31, and the fan 38 is integrally arranged with the driving coupling 21 or the driven coupling.

As shown in fig. 2 and 4, the cooling assembly further includes a wind scooper 36 disposed between the fan 38 and the heat sink 31, and a side of the wind scooper 36 facing the fan 38 is recessed inward to form a tapered wind guide surface 37; the wind guide surface 37 is coaxial with the rotating unit, and an air outlet 39 is arranged at the center. The wind scooper 36 guides and collects the airflow generated by the fan 38, so that the cooling airflow is more concentrated, and the cooling effect is further improved.

As shown in fig. 5, the positioning device further comprises an elastic bolt positioning assembly 7, as shown in fig. 7 and 8, the elastic bolt positioning assembly 7 comprises an installation base hole 74, an installation positioning hole 72 and a positioning bolt 71, and the positioning bolt 71 sequentially passes through the installation positioning hole 72 and the installation base hole 74; the installation positioning hole 72 comprises a first positioning section, and the length of the positioning section is less than or equal to the length of the positioning hole; the installation base hole 74 comprises a second positioning section, and the length of the second positioning section is less than or equal to that of the installation base hole 74; the first positioning section and the second positioning section have the same diameter and are communicated with each other to form a positioning space 73; an elastic positioning sleeve 75 sleeved outside the positioning bolt 71 is further arranged in the positioning space 73, and an opening is formed in the circumferential direction of the elastic positioning sleeve 75; still include mounting panel 4, transmission case 12 be connected with mounting panel 4 through two sets of elastic bolt locating component 7, motor 2 be connected with mounting panel 4 through two sets of elastic bolt locating component 7. Preferably, the installation positioning hole 72 for the positioning installation of the compressing assembly 1 is arranged on the compressing assembly 1, and the installation positioning hole 72 for the positioning installation of the motor 2 is arranged on the installation plate 4. A plurality of auxiliary screws 8 are further arranged between the transmission case 12 and the mounting plate 4, and a plurality of auxiliary screws 8 are further arranged between the motor 2 and the mounting plate 4. The reliability of the installation of the compressing assembly 1 and the motor 2 is improved. The mounting plate 4 is provided with a containing hole 41 corresponding to the oil pan 14, and the oil pan 14 extends into the containing hole 41 and is connected with the mounting plate 4 through the transmission case 12; the bottom of the mounting plate 4 is provided with a plurality of shock absorption supports 41, and the whole local part of the compressor is compact and attractive.

As shown in fig. 1, the cylinder head 11 is provided with a hydraulic bleed switch 5 communicating with the exhaust chamber 111. When the gas pressure of a gas storage tank communicated with the exhaust cavity 111 reaches the upper limit of the specified pressure of the vehicle, the pressure sensor controls the electric air compressor to stop working through an electric signal, and at the moment, the hydraulic air release switch 5 exhausts the gas from the inlet of the vehicle gas storage tank to the exhaust cavity 111 of the cylinder cover 11. When the compressor is started again, the hydraulic bleed switch 5 is closed and the air compressor is started idle.

In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The electric air compressor comprises a machine body and a mounting plate, wherein the machine body comprises a motor and a compression assembly; the method is characterized in that: the positioning device comprises a positioning bolt, a positioning bolt and a positioning bolt, wherein the positioning bolt is arranged in the positioning bolt; the installation positioning hole comprises a first positioning section, and the length of the positioning section is less than or equal to that of the positioning hole; the installation base hole comprises a second positioning section, and the length of the second positioning section is less than or equal to that of the installation base hole; the first positioning section and the second positioning section have the same diameter and are communicated with each other to form a positioning space;

an elastic positioning sleeve sleeved outside the positioning bolt is further arranged in the positioning space, and an opening is formed in the circumferential direction of the elastic positioning sleeve;

the transmission case is connected with the mounting plate through two groups of elastic bolt positioning assemblies, and the motor is connected with the mounting plate through two groups of elastic bolt positioning assemblies.

2. The electric air compressor of claim 1, wherein: still be equipped with a plurality of auxiliary screw between compression assembly and the mounting panel, motor and mounting panel between still be equipped with a plurality of auxiliary screw.

3. The electric air compressor of claim 1, wherein: the installation positioning hole for positioning and installing the compression assembly is arranged on the compression assembly, and the installation positioning hole for positioning and installing the motor is arranged on the installation plate.

4. The electric air compressor according to any one of claims 1 to 3, wherein: the compression assembly comprises a transmission case, the bottom of the transmission case is provided with an opening, the bottom of the transmission case is hermetically connected with an oil pan, and the oil pan is sunken downwards to form an oil storage cavity; the compression assembly is connected with the mounting plate through a transmission case.

5. The electric air compressor of claim 4, wherein: the mounting plate is provided with a containing hole corresponding to the oil pan, and the oil pan extends into the containing hole and is connected with the mounting plate through a transmission case; the bottom of mounting panel is equipped with a plurality of shock attenuation supports.

6. The electric air compressor according to any one of claims 1 to 3, 5, wherein: the compression assembly further comprises an air cylinder and a cylinder cover, an air inlet cavity and an air exhaust cavity are formed in the cylinder cover, and a hydraulic air release switch communicated with the air exhaust cavity is arranged on the cylinder cover.