WO2019128816A1 - 四缸电动空压机用曲轴装配结构及四缸电动空压机 - Google Patents

四缸电动空压机用曲轴装配结构及四缸电动空压机 Download PDF

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Publication number
WO2019128816A1
WO2019128816A1 PCT/CN2018/122189 CN2018122189W WO2019128816A1 WO 2019128816 A1 WO2019128816 A1 WO 2019128816A1 CN 2018122189 W CN2018122189 W CN 2018122189W WO 2019128816 A1 WO2019128816 A1 WO 2019128816A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
crankshaft
air compressor
electric air
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/122189
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English (en)
French (fr)
Inventor
袁海强
金承郁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wabco China Co Ltd
Original Assignee
Wabco China Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wabco China Co Ltd filed Critical Wabco China Co Ltd
Priority to EP18895411.9A priority Critical patent/EP3734073A4/en
Publication of WO2019128816A1 publication Critical patent/WO2019128816A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0094—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 crankshaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/0404—Details, component parts specially adapted for such pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/053—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with an actuating element at the inner ends of the cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/06—Cooling; Heating; Prevention of freezing
    • F04B39/066—Cooling by ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/14—Provisions for readily assembling or disassembling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the present invention belongs to the technical field of electric air compressors, and more particularly to a crankshaft assembly structure for a four-cylinder electric air compressor and a four-cylinder electric air compressor.
  • the electric vehicle adopts the electric air compressor.
  • the air compressor stops, and the pressure of the brake line drops to the set lower limit with the use. , the air compressor restarts, to achieve the economics of its work.
  • the output shaft of the existing electric air compressor motor is generally connected to the crankshaft by a coupling. Since the coupling is connected as a flexible joint, the middle of the coupling is an elastic body, and the elastomer material is eight: 88, and the service life is limited. , need to be replaced regularly. The higher cost of the coupling is not conducive to reducing product costs. Coupling connections are prone to noise during power transmission. With the coupling connection method, the output shaft of the motor needs bearing support at both ends, and the crank drive end also needs bearing support, and the number of parts is large.
  • the current level of electric air compressors is mostly: ⁇ 65, and the level is low.
  • the existing electric air compressor is driven by a three-phase asynchronous motor, and the type of the motor is high in noise.
  • the existing air compressor has a cylinder diameter of 85: ⁇ 1 111, which is large in size, heavy in weight, high in noise, and requires a large installation space.
  • existing air compressors require a complete vehicle to provide coolant without separate cooling capacity.
  • the present invention provides a crankshaft assembly structure for a four-cylinder electric air compressor and a four-cylinder electric air compressor, which replaces the coupling connection mode and optimizes the electric air.
  • the arrangement of the press simplifies the assembly of the electric air compressor. ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • the present invention provides a crankshaft assembly structure for a four-cylinder electric air compressor, including a crankshaft, an electric motor, a bearing, a balance block, and a motor flange; the end face of the crankshaft drive end is provided with a shaft hole, and the inner wall of the shaft hole is provided with at least one a keyway, a bearing mounting seat is arranged on the side of the crankshaft driving end; a bearing assembly seat of the crankshaft driving end is equipped with an inner ring of the bearing, and a balance weight is arranged on the outer side of the bearing on the crankshaft driving end; the outer ring of the bearing is assembled to connect the motor flange, the output of the motor
  • the shaft is provided with at least one second keyway, and the output shaft of the motor is inserted into the shaft hole of the crank drive end, and the first key groove and the second key groove are connected by a key.
  • crankshaft assembly structure of the four-cylinder electric air compressor further includes a lock nut, and an external thread is disposed on a side of the driving end of the crankshaft near the end surface, and the external thread of the driving end of the crankshaft is screwed to the lock nut to press Tight balance block.
  • the crankshaft assembly structure of the four-cylinder electric air compressor further includes a cylinder body, and the crankshaft is disposed in the cylinder body, and the motor flange includes a flange and a flange sleeve located at a middle position of the flange, and the cylinder body is The flange is mounted on the end face of one end of the output shaft of the motor, the flange sleeve is embedded in the cylinder body, and the outer ring of the bearing is assembled and connected in the flange sleeve.
  • the flange assembly is connected to the motor, and a plurality of screw holes are disposed at a position of the flange of the flange, and the cylinder body is provided with a plurality of assembly holes corresponding to the screw holes, and the bolts are connected to the screw holes through the assembly holes to The cylinder assembly is connected to the flange.
  • a first keyway is disposed on the inner wall of the shaft hole, and a second keyway is disposed on the output shaft of the motor, and the first keyway and the second keyway are connected by a flat key.
  • the inner wall of the shaft hole defines a radial direction in the radial direction of the crankshaft to form a first key groove.
  • a side surface of the output shaft of the motor has a groove formed in a center of the shaft to form a second key groove.
  • the present invention also provides a four-cylinder electric air compressor, comprising a left cylinder block and a right cylinder block, and further comprising the above-mentioned four-cylinder electric air compressor crankshaft assembly structure, the motor is disposed between the left and right cylinder blocks
  • the top ends of the left and right cylinders are respectively provided with two cylinder heads, and the two cylinder heads at the top of the left cylinder block and the two cylinder heads at the top end of the right cylinder block are respectively arranged in a shape, and the left and right cylinders are respectively arranged.
  • crankshaft a crankshaft, a first link, a second link, a first piston and a second piston are disposed, one end of the first link is sleeved on the crankshaft, and the other end is connected to the first piston, and one end of the second link Nested on the crankshaft and connected to the second piston at the other end;
  • the motor is a dual output shaft motor, and the crankshafts in the left and right cylinders are respectively driven to rotate by two output shafts of the motor, and the crankshaft rotates to drive the first 1.
  • the second link acts as a cycloidal motion, thereby driving the first and second pistons to reciprocate ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • each of the cylinder heads is further provided with an exhaust port
  • the four-cylinder electric air compressor further includes an exhaust line, and one end of the exhaust line is connected with the exhaust port of the cylinder head. The other end of the car connected to the car's gas path
  • the four-cylinder electric air compressor further includes two electronic fans for lowering the temperature of the cylinder head, wherein one of the electronic fans is located outside the left cylinder and between the two cylinder heads of the left cylinder. Another electronic fan is located outside the right cylinder and between the two cylinder heads of the right cylinder.
  • crankshaft assembly structure of the four-cylinder electric air compressor of the present invention is directly connected by a key connection between the output shaft of the motor and the crankshaft, the coupling is eliminated, the cost is low, and the bearing and the like are reduced.
  • the number of the power connection increases the service life of the power connection, and the noise during the power transmission process is very low.
  • crankshaft assembly structure of the four-cylinder electric air compressor of the present invention can move the bearing position toward the crankshaft, close to the crankshaft connecting rod diameter, and reduce the force of the output shaft of the motor, so that most of the load is concentrated. The higher strength of the crankshaft to improve the life of the output shaft of the motor.
  • the arrangement between the cylinders and the cylinder head is optimized, and the overall arrangement of the electric air compressor is optimized.
  • the entire air compressor adopts a split design, which simplifies the assembly steps and improves the assembly efficiency.
  • the left and right cylinders of the present invention are made of aluminum material, the weight is greatly reduced, the cylinder diameter is reduced, the size of the whole machine is small, and the installation space is saved.
  • the motor of the invention adopts a permanent magnet synchronous motor, which greatly reduces the noise during operation.
  • each cylinder is equipped with a cushion to further reduce the vibration noise during operation.
  • the present invention uses an electronic fan to cool each cylinder head, so that the electric air compressor of the present invention has a separate cooling capacity. Further, the change in the connection mode of the intake pipe and the exhaust pipe in the present invention greatly increases the class of the electric air compressor in the present invention.
  • 1 is an overall assembly view of a four-cylinder electric air compressor of the present invention. ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • FIG. 2 is a half cross-sectional view of a left or right cylinder in a four-cylinder electric air compressor of the present invention.
  • FIG. 3 is an isometric view of a left or right cylinder in a four-cylinder electric air compressor of the present invention.
  • FIG. 4 is an exploded view of a cylinder head of a four-cylinder electric air compressor of the present invention.
  • FIG. 5 is a partial assembly view of a four-cylinder electric air compressor of the present invention.
  • FIG. 6 is a perspective view 1 of the intake gas storage tank of the present invention.
  • FIG. 7 is a perspective view 2 of the intake air tank of the present invention.
  • FIG. 8 is a cross-sectional view showing a portion of a crankshaft assembly structure for a four-cylinder electric air compressor according to the present invention.
  • FIG. 9 is a perspective view of the output shaft and the crankshaft portion of the motor of the present invention, and the crankshaft portion is a cross-sectional view.
  • FIG. 10 is a perspective view of a lock nut of the present invention.
  • FIG. 11 is a perspective view of a weight of the present invention.
  • FIG. 12 is a perspective view of a bearing of the present invention.
  • FIG. 13 is a perspective view of a first link of the present invention.
  • FIG. 14 is a perspective view of a motor flange of the present invention.
  • FIG. 15 is a perspective view of an output shaft of the motor of the present invention.
  • FIG. 16 is a perspective view of a crankshaft of the present invention.
  • FIG. 17 is a perspective view of the crankshaft after assembling the bearing, the weight, and the lock nut.
  • a crankshaft assembly structure for a four-cylinder electric air compressor includes a crankshaft 11, an electric motor 3, a bearing 19, a weight 18, a lock nut 17, and a motor flange 21.
  • the driving end of the crankshaft 11 is connected to one end of the output shaft 16 of the motor 3.
  • the end surface of the driving end of the crankshaft 11 is provided with a shaft hole 112.
  • the inner wall of the shaft hole 112 is recessed in the radial direction of the crankshaft 11 to form a first key groove 113.
  • the side of the driving end is provided with a bearing mount 111, and an external thread is provided on the side of the driving end of the crankshaft 11 at a position close to the end surface.
  • the bearing mount 111 of the drive end of the crankshaft 11 is fitted with the inner ring 191 of the bearing 19.
  • the weighting block 18 is provided with a fitting opening, the driving end of the crankshaft 11 passes through the fitting opening on the weighting block 18, the weighting block 18 is assembled on the crankshaft 11 and outside the bearing 19, and the external thread of the crankshaft 11 is screwed to the locking nut. 17 to compress the weight 18 to secure the weight 18 to the assembled structure of the crankshaft 11.
  • the balance block 18 is used to balance the unbalanced centrifugal inertia force and moment of inertia of the crankshaft 11 to reduce the vibration amplitude and frequency of the crankshaft 11 after high-speed rotation, and to make the crankshaft 11 run more stably.
  • the motor flange 21 includes a flange 211 and a flange sleeve 212 at a position intermediate the flange 211, and a plurality of screw holes 213 are provided at the edge of the flange 2 11.
  • the left cylinder block 1 and the right cylinder block 2 are provided with a plurality of fitting holes corresponding to the screw holes 213.
  • the flange 211 is assembled to the end face of the output shaft 16 of the motor 3, and the bolt is connected to the screw hole 213 through the fitting hole so that the left cylinder block 1 and the right cylinder block 2 are respectively attached to the flange plate 211.
  • the motor flange 21 on the left side has its flange sleeve 212 embedded in the left cylinder block 1; the motor flange 21 on the right side has its flange sleeve 212 embedded in the right cylinder block 1.
  • the outer ring 192 of the bearing 19 is fitted to the flange sleeve 21 2 of the motor flange 21.
  • the side surface of the output shaft 16 of the motor 3 is recessed toward its axial center to form a second key groove 161, and the output shaft 16 of the motor 3 is inserted into the shaft hole 112 of the driving end of the crankshaft 11, the first key groove 113 and the second key groove 161. Connected via a flat key 22.
  • crankshaft assembly structure of the four-cylinder electric air compressor of the present embodiment is directly connected by the key connection between the output shaft 16 of the motor 3 and the crankshaft 11, and the coupling is eliminated, and the cost is low, and the cost is reduced.
  • the number of parts such as the bearing 19 improves the service life of the power connection, and the noise during the power transmission process is very low; the position of the bearing 19 can be moved toward the crankshaft 11 to be close to the connecting rod diameter of the crankshaft 11, and the output shaft of the motor 3 is lowered.
  • the force of 16 causes the load to be mostly concentrated on the crankshaft 11 with higher strength to improve the motor 3 ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • a four-cylinder electric air compressor includes an electric motor 3, a left cylinder block 1 and a right cylinder block 2, and the electric motor 3 is disposed between the left and right cylinder blocks.
  • the left and right cylinders are made of aluminum material, which reduces the overall weight.
  • the bottom ends of the left and right cylinders are respectively provided with mounting brackets 9, and the bottom ends of the mounting brackets 9 are all provided with a cushion 10
  • the top ends of the left and right cylinders are respectively provided with two cylinder heads 6, and the two cylinder heads 6 at the top end of the left cylinder block 1 and the two cylinder heads 6 at the top end of the right cylinder block 2 are each arranged in a form.
  • Each of the cylinder heads 6 includes a cylinder head 61, a gasket 62, an exhaust valve piece 63, an intake valve piece 64 and a cylinder liner 65 which are disposed in this order from top to bottom.
  • the cylinder liner 65 of each of the cylinder heads 6 respectively It is connected to the left cylinder block 1 and the right cylinder block 2.
  • Each of the cylinder heads 6 is provided with an intake port 7 for fitting connection with the outlet branch 44.
  • the left and right cylinders are respectively provided with a crankshaft 11, a first connecting rod 12, a second connecting rod 14, a first piston 13 and a second piston 15, and one end of the first connecting rod 12 is sleeved on the crankshaft
  • the upper end and the other end are connected to the first piston 13, and one end of the second link 14 is sleeved on the crankshaft 11 and the other end is connected to the second piston 15.
  • the motor 3 is a dual output shaft motor, and the motor 3 is a permanent magnet synchronous motor.
  • the crankshafts 11 in the left and right cylinders are respectively driven to rotate by the two output shafts of the motor 3.
  • the rotation of the crankshaft 11 drives the first and second links to perform a cycloidal motion, and then drives the first and second pistons to reciprocate linearly to realize the intake and exhaust of the cylinder head 6.
  • the intake valve piece 64 is opened, the exhaust valve piece 63 is closed, and the air compressor is subjected to the suction process
  • the intake valve piece 64 is closed, the exhaust valve piece 63 is opened, and the air compressor performs a compression process, and the gas sucked in the suction process is compressed and discharged to the entire vehicle air path.
  • the four-cylinder electric air compressor of the present embodiment further includes an intake air tank 4, and the intake air tank 4 includes an air intake tank 41 and two gas tanks 42, two The gas separation tanks 42 are symmetrically arranged at the front and rear ends of the intake tank body 41.
  • the intake tank body 41 communicates with the two gas separation tanks 42, and the intake air tank 4 has an overall shape in which the intake tank body 41 is narrowed toward the gas separation tank body 42.
  • the connecting portions of the intake tank body 41 and the two gas separation tanks 42 each have an arc-shaped transition, so that the airflow entering the intake tank body 41 can be smoothly conveyed to each of the gas separation tank bodies 42 to reduce noise.
  • An intake port 43 is provided on the upper surface of the intake tank 41.
  • An air outlet branch 44 is connected to both sides of the gas separation tank body 42, and the two gas outlet branches 44 on the same gas separation tank body 42 are symmetrically arranged. Air inlet 43 and four air outlet branches 44 ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • the air inlet 43 of the intake air tank 4 is connected to the air filter of the entire vehicle, and the air from the air filter first enters the air tank through the air inlet 43.
  • the body 41, the intake tank 41 buffers the incoming air, and the buffered air is evenly passed to the four cylinder heads 6 of the electric air compressor through the four symmetrical outlets 44 through the two sides of the gas separation tank 42.
  • the upper air inlet port 7 and the four symmetrical air outlet branches 4 4 directly reach the four cylinder heads 6 of the electric air compressor and uniformly and efficiently separate the air to realize the air suction process of the electric air compressor.
  • the intake air tank 4 can uniformly distribute the intake air to the four cylinder heads 6 of the four-cylinder electric air compressor, reduce the intake negative pressure, help reduce the amount of oil, and the design method filters the intake frequency. , reducing intake noise.
  • the intake air tank 4 replaces the conventional three-way joint, effectively functions as a buffer to reduce operating noise.
  • the principle of noise reduction is as follows:
  • the four-cylinder electric air compressor is not simply sucking the steady-state airflow from the outside. Since each cylinder head 6 generates airflow fluctuations during the intake process, the four-cylinder electric air compressor intake system The gas fluctuations are extremely complicated.
  • a negative pressure wave is formed at the intake port 7 on the cylinder head 6 due to the suction action of the piston, and noise generated by the friction between the piston and the inner wall of the cylinder head 6 is also transmitted through the intake air.
  • the intake air tank 4, buffering the negative pressure wave formed by the intake pressure makes the pressure fluctuation smaller, and also buffers the noise, thereby reducing the noise generated by the intake and piston movement.
  • the intake tank body 41, the gas separation tank body 42, and the gas outlet branch 44 are integrally molded from high-strength plastic.
  • the air intake gas tank 4 of the present embodiment is convenient for mold opening production, and reduces the weight of the product while ensuring the overall strength, and meets the requirements for safety, lightness and compactness of the components of the vehicle system.
  • the integrated design of the intake air reservoir 4 and the four outlet branches 44 simplifies the intake line, reduces installation space, makes installation easier, and looks more compact.
  • the end of the outlet branch 44 is provided with an annular groove 47 for fitting an O-ring. An annular groove 47 is embedded in the annular groove 47 of the outlet branch 44, and the outlet branch 44 ⁇ 0 2019/128816 ⁇ (:17 ⁇ 2018/122189
  • Each of the cylinder heads 6 is further provided with an exhaust port, and the four-cylinder electric air compressor further includes an exhaust line 8
  • the exhaust pipe 8 is connected to the exhaust port of the cylinder head 6, and the other end is connected to the entire vehicle air path of the automobile.
  • the exhaust pipe 8 is made of a copper pipe, and the exhaust pipe 8 and the exhaust port of the cylinder head 6 are glued to achieve sealing.
  • the motor connector is also glued.
  • the change in the connection mode of each joint has raised the level of the electric air compressor in the present invention to 7.
  • the atmosphere passes through the air filter of the entire vehicle and enters the intake air tank 4, and is distributed from the intake air tank 4 to the four cylinder heads 6 of the air compressor, and then the cylinder
  • the piston in the head 6 reciprocates under the action of the motor 3, the crankshaft 11 and the connecting rod.
  • the cylinder head 6 draws in gas.
  • the air compressor performs a compression process, and the suction process is performed.
  • the inhaled gas is compressed and discharged to the vehicle air path, and finally stored in the gas storage tank of the entire vehicle for use.
  • the four-cylinder electric air compressor further includes two electronic fans 5 for lowering the temperature of the cylinder head 6, wherein one of the electronic fans 5 is located outside the left cylinder block 1 and is located at the two cylinder heads 6 of the left cylinder block 1. Between the other, an electronic fan 5 is located outside the right cylinder 2 and between the two cylinder heads 6 of the right cylinder 2. The arrangement of the electronic fan 5 provides the electric air compressor with independent cooling capability.

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Abstract

一种四缸电动空压机用曲轴装配结构及四缸电动空压机，四缸电动空压机用曲轴装配结构的曲轴（11）驱动端的端面开设有轴孔（112），轴孔（112）内壁设置有至少一个第一键槽（113），曲轴驱动端的侧面设置有轴承装配座（111）；曲轴驱动端的轴承装配座（111）装配轴承（19）的内圈（191），曲轴驱动端上于轴承（19）的外侧装配平衡块（18）；轴承（19）的外圈（192）装配连接电机法兰（21），电动机（3）的输出轴（16）设置有至少一个第二键槽（161），电动机（3）的输出轴（16）插入曲轴驱动端的轴孔（112），第一键槽（113）和第二键槽（161）之间经键（22）连接。该结构替代了联轴器连接方式，优化电动空压机的布置，简化电动空压机的组装。

Description

\¥0 2019/128816 卩（：17 \2018/122189
1
发明名称：四缸电动空压机用曲轴装配结构及四缸电动空压机 技术领域
[0001] 本发明属于电动空压机技术领域， 尤其涉及一种四缸电动空压机用曲轴装配结 构及四缸电动空压机。
背景技术
[0002] 随着新能源汽车的迅速发展， 为实现整车的节能， 各总成均需力求经济。 纯电 动汽车采用电动空压机， 车辆运行过程中， 在制动管路压力达到空气干燥器卸 荷压力后， 空压机停机， 制动管路压力随使用而下降到设定下限值时， 空压机 重启， 实现其工作的经济性。
[0003] 现有的电动空压机电动机的输出轴一般用联轴器连接曲轴， 由于联轴器连接为 柔性连接， 联轴器中间为弹性体， 弹性体材料为八：88 , 使用寿命有限， 需要定期 更换。 联轴器的成本较高， 不利于降低产品成本。 联轴器连接， 在动力传动过 程中容易产生噪音。 采用联轴器连接方式， 电机的输出轴的两端需要轴承支撑 ， 曲轴驱动端也需要轴承支撑， 零件数量多。
[0004] 此外， 现有的电动空压机的 等级大多为：^65 , 等级较低。 现有的电动空压 机采用三相交流异步电动机驱动， 该电机类型噪音高。 现有的空压机缸径为 85：〇1 111左右， 尺寸大， 重量大， 噪音高， 且需要很大的安装空间。 此外， 现有的空压 机需要整车提供冷却液， 不具备单独冷却能力。
[0005] 由此可见， 现有技术有待于进一步的改进和提高。
发明概述
技术问题
问题的解决方案
技术解决方案
[0006] 本发明为避免上述现有技术存在的不足之处， 提供了一种四缸电动空压机用曲 轴装配结构及四缸电动空压机， 替代了联轴器连接方式， 优化电动空压机的布 置， 简化电动空压机的组装。 \¥0 2019/128816 卩（：17 \2018/122189
2
[0007] 本发明提供一种四缸电动空压机用曲轴装配结构， 包括曲轴、 电动机、 轴承、 平衡块和电机法兰； 曲轴驱动端的端面开设有轴孔， 轴孔内壁设置有至少一个 第一键槽， 曲轴驱动端的侧面设置有轴承装配座； 曲轴驱动端的轴承装配座装 配轴承的内圈， 曲轴驱动端上于轴承的外侧装配平衡块； 轴承的外圈装配连接 电机法兰， 电动机的输出轴设置有至少一个第二键槽， 电动机的输出轴插入曲 轴驱动端的轴孔， 第一键槽和第二键槽之间经键连接。
[0008] 进一步的， 四缸电动空压机用曲轴装配结构还包括锁紧螺母， 曲轴驱动端的侧 面上且靠近端面的位置设置有外螺纹， 曲轴驱动端的外螺纹上螺纹连接锁紧螺 母以压紧平衡块。
[0009] 进一步的， 四缸电动空压机用曲轴装配结构还包括缸体， 缸体内设置曲轴， 电 机法兰包括法兰盘和位于法兰盘中间位置的法兰套筒， 缸体经法兰盘装配于电 动机的输出轴一端的端面， 法兰套筒嵌入缸体内， 轴承的外圈装配连接于法兰 套筒内。
[0010] 进一步的， 法兰盘装配连接电动机， 法兰盘的边沿位置设置有多个螺孔， 缸体 上设置有多个与螺孔对应的装配孔， 螺栓经装配孔连接螺孔以使缸体装配连接 法兰盘。
[0011] 进一步的， 轴孔内壁设置一个第一键槽， 电动机的输出轴设置一个第二键槽， 第一键槽和第二键槽之间经一个平键连接。
[0012] 进一步的， 轴孔内壁向曲轴的径向开设凹槽形成第一键槽。
[0013] 进一步的， 电动机的输出轴的侧面向其轴心开设凹槽形成第二键槽。
[0014] 本发明还提供一种四缸电动空压机， 包括左缸体和右缸体， 还包括上述的四缸 电动空压机用曲轴装配结构， 电动机设置在左、 右缸体之间， 左、 右缸体的顶 端分别设置有两个缸头， 左缸体顶端的两个缸头以及右缸体顶端的两个缸头各 自均呈 型布置， 所述左、 右缸体内均设置有曲轴、 第一连杆、 第二连杆、 第一 活塞和第二活塞， 第一连杆的一端套置在曲轴上、 另一端与所述第一活塞相连 ， 第二连杆的一端套置在曲轴上、 另一端与所述第二活塞相连； 所述电动机为 双输出轴电机， 左、 右缸体内的曲轴分别由电动机的两根输出轴驱动旋转， 曲 轴旋转带动所述第一、 第二连杆作摆线运动， 进而带动第一、 第二活塞作往复 \¥0 2019/128816 卩（：17 \2018/122189
3 直线运动， 实现缸头的进、 排气。
[0015] 进一步的， 各所述缸头上还分别设置有排气口， 所述四缸电动空压机还包括排 气管路， 排气管路的一端与缸头的排气口相连通、 另一端连接汽车的整车气路
[0016] 进一步的， 所述四缸电动空压机还包括两个用于降低缸头温度的电子风扇， 其 中一个电子风扇位于左缸体外侧且位于左缸体的两个缸头之间， 另外一个电子 风扇位于右缸体外侧且位于右缸体的两个缸头之间。
发明的有益效果
有益效果
[0017] 由于采用了上述技术方案， 本发明所取得的有益效果为：
[0018] 1、 本发明四缸电动空压机用曲轴装配结构， 电动机的输出轴与曲轴之间直接 采用键连接的方式进行连接， 取消了联轴器， 成本较低， 减少了轴承等零件的 数量， 提高了动力连接的使用寿命， 动力传动过程中噪音很低。
[0019] 2、 本发明四缸电动空压机用曲轴装配结构， 可以将轴承位置向曲轴的方向移 动布置， 贴近曲轴连杆径， 降低电动机的输出轴的受力， 使负载大部分集中在 强度较高的曲轴上， 以提高电动机的输出轴的使用寿命。
[0020] 3、 本发明中各缸体与缸头之间呈 型布置， 优化了电动空压机的总布置， 整个 空压机采用分体式设计， 简化了组装步骤， 提高了组装效率。
[0021] 4、 本发明的左、 右缸体采用铝制材料制成， 重量大大降低， 缸径尺寸变小， 整机尺寸小， 节省了安装空间。
[0022] 5、 本发明中电动机采用永磁同步电机， 大大降低了运行过程中的噪音。 此外
， 各缸体的安装架底端设置减震垫， 进一步降低了运行中的震动噪音。
[0023] 6、 本发明采用电子风扇对各缸头进行降温， 使得本发明中的电动空压机具备 了单独冷却能力。 此外， 本发明中进气管路和排气管路连接方式的改变， 大大 增加了本发明中电动空压机的 等级。
对附图的简要说明
附图说明
[0024] 图 1为本发明四缸电动空压机的整体装配图。 \¥0 2019/128816 卩（：17 \2018/122189
4
[0025] 图 2为本发明四缸电动空压机中左缸体或右缸体的半剖图。
[0026] 图 3为本发明四缸电动空压机中左缸体或右缸体的轴测图。
[0027] 图 4为本发明四缸电动空压机中缸头的爆炸图。
[0028] 图 5为本发明四缸电动空压机中局部装配图。
[0029] 图 6为本发明进气储气罐的立体图一。
[0030] 图 7为本发明进气储气罐的立体图二。
[0031] 图 8为本发明四缸电动空压机用曲轴装配结构部分的剖视图。
[0032] 图 9为本发明电机的输出轴与曲轴部分的转配图， 曲轴部分为剖视图。
[0033] 图 10为本发明锁紧螺母的立体图。
[0034] 图 11为本发明平衡块的立体图。
[0035] 图 12为本发明轴承的立体图。
[0036] 图 13为本发明第一连杆的立体图。
[0037] 图 14为本发明电机法兰的立体图。
[0038] 图 15为本发明电动机的输出轴的立体图。
[0039] 图 16为本发明曲轴的立体图。
[0040] 图 17为本发明曲轴上装配轴承、 平衡块、 锁紧螺母之后的立体图。
[0041] 其中，
[0042] 1、 左缸体， 2、 右缸体， 3、 电动机， 4、 进气储气罐， 41、 进气罐体， 42、 分 气罐体， 43、 进气口， 44、 出气支路， 45、 窜气口， 46、 装配耳， 47、 环形沟 槽， 5、 电子风扇， 6、 缸头， 61、 缸盖， 62、 密封垫， 63、 排气 _片， 64、 进 气阀片， 65、 缸套， 7、 进气端口， 8、 排气管路， 9、 安装架， 10、 减震垫， 11 、 曲轴， 111、 轴承装配座， 112、 轴孔， 113、 第一键槽， 12、 第一连杆， 13、 第一活塞， 14、 第二连杆， 15、 第二活塞， 16、 输出轴， 161、 第二键槽， 17、 锁紧螺母， 18、 平衡块， 19、 轴承， 191、 内圈， 192、 外圈， 21、 电机法兰， 2 11、 法兰盘， 212、 法兰套筒， 213、 螺孔， 22、 平键。
发明实施例
本发明的实施方式
[0043] 下面结合附图和具体的实施例对本发明作进一步的详细说明， 但本发明并不限 \¥0 2019/128816 卩（：17 \2018/122189
5 于这些实施例。
[0044] 如图 8至图 17， 一种四缸电动空压机用曲轴装配结构， 包括曲轴 11、 电动机 3、 轴承 19、 平衡块 18、 锁紧螺母 17和电机法兰 21。
[0045] 曲轴 11驱动端为连接电动机 3的输出轴 16的一端， 曲轴 11驱动端的端面开设有 轴孔 112， 轴孔 112内壁向曲轴 11的径向开设凹槽形成一个第一键槽 113， 曲轴 11 驱动端的侧面设置有轴承装配座 111， 曲轴 11驱动端的侧面上且靠近端面的位置 设置有外螺纹。
[0046] 曲轴 11驱动端的轴承装配座 111装配轴承 19的内圈 191。 平衡块 18上开设有装配 口， 曲轴 11驱动端穿过平衡块 18上的装配口， 将平衡块 18装配于曲轴 11上且于 轴承 19的外侧， 曲轴 11驱动端的外螺纹旋紧锁紧螺母 17以压紧平衡块 18， 以将 平衡块 18固定在曲轴 11的装配结构上。 平衡块 18用来平衡曲轴 11的不平衡的离 心惯性力和惯性力矩， 以降低曲轴 11高速旋转后的振动幅度和频率， 使曲轴 11 运转更稳定。
[0047] 电机法兰 21包括法兰盘 211和位于法兰盘 211中间位置的法兰套筒 212， 法兰盘 2 11的边沿位置设置有多个螺孔 213。 左缸体 1、 右缸体 2上设置有多个与螺孔 213 对应的装配孔。 将法兰盘 211装配连接电动机 3的输出轴 16—端的端面， 螺栓经 装配孔连接螺孔 213以使左缸体 1、 右缸体 2分别装配连接法兰盘 211。 同时， 左 侧的电机法兰 21， 其法兰套筒 212嵌入左缸体 1内； 右侧的电机法兰 21， 其法兰 套筒 212嵌入右缸体 1内。 轴承 19的外圈 192装配连接于电机法兰 21的法兰套筒 21 2内。
[0048] 电动机 3的输出轴 16的侧面向其轴心开设凹槽形成一个第二键槽 161， 电动机 3 的输出轴 16插入曲轴 11驱动端的轴孔 112， 第一键槽 113和第二键槽 161之间经一 个平键 22连接。
[0049] 本实施例的四缸电动空压机用曲轴装配结构， 电动机 3的输出轴 16与曲轴 11之 间直接采用键连接的方式进行连接， 取消了联轴器， 成本较低， 减少了轴承 19 等零件的数量， 提高了动力连接的使用寿命， 动力传动过程中噪音很低； 可以 将轴承 19位置向曲轴 11的方向移动布置， 贴近曲轴 11的连杆径， 降低电动机 3的 输出轴 16的受力， 使负载大部分集中在强度较高的曲轴 11上， 以提高电动机 3的 \¥0 2019/128816 卩（：17 \2018/122189
6 输出轴 16的使用寿命。
[0050] 如图 1至图 5所示， 一种四缸电动空压机， 包括电动机 3、 左缸体 1和右缸体 2， 所述电动机 3设置在左、 右缸体之间。 所述左、 右缸体均采用铝制材料制成， 降 低了其整体重量。
[0051] 所述左、 右缸体的底端均设置有安装架 9 , 各安装架 9的底端均设置有减震垫 10
[0052] 所述左、 右缸体的顶端分别设置有两个缸头 6， 左缸体 1顶端的两个缸头 6以及 右缸体 2顶端的两个缸头 6各自均呈 型布置。 各所述缸头 6均包括自上而下依次 设置的缸盖 61、 密封垫 62、 排气阀片 63、 进气阀片 64和缸套 65， 各所述缸头 6的 缸套 65分别与左缸体 1和右缸体 2相连。 各缸头 6上均设置有进气端口 7 , 进气端 口 7用于与出气支路 44装配连接。
[0053] 所述左、 右缸体内均设置有曲轴 11、 第一连杆 12、 第二连杆 14、 第一活塞 13和 第二活塞 15 , 第一连杆 12的一端套置在曲轴 11上、 另一端与所述第一活塞 13相 连， 第二连杆 14的一端套置在曲轴 11上、 另一端与所述第二活塞 15相连。
[0054] 所述电动机 3为双输出轴电机， 且该电动机 3为永磁同步电机。 左、 右缸体内 的曲轴 11分别由电动机 3的两根输出轴驱动旋转。
[0055] 所述曲轴 11旋转带动所述第一、 第二连杆作摆线运动， 进而带动第一、 第二活 塞作往复直线运动， 实现缸头 6的进、 排气。 具体地来说， 当第一活塞 13和第二 活塞 15下行时， 进气阀片 64打开， 排气阀片 63关闭， 空压机进行吸气过程， 当 第一活塞 13和第二活塞 15上行时， 进气阀片 64关闭， 排气阀片 63打开， 空压机 进行压缩过程， 将上述吸气过程吸入的气体压缩后排出至整车气路。
[0056] 结合图 5至图 7， 本实施例的四缸电动空压机还包括进气储气罐 4， 进气储气罐 4 包括进气罐体 41和两分气罐体 42, 两分气罐体 42对称布置于进气罐体 41前后两 端。 进气罐体 41与两分气罐体 42连通， 进气储气罐 4呈进气罐体 41朝向分气罐体 42收窄的整体形状。 进气罐体 41与两分气罐体 42的连接部分均呈弧形过渡， 从 而使进入进气罐体 41的气流能够平滑输送至各分气罐体 42, 减少了噪音。 进气 罐体 41的上表面设置有进气口 43。 分气罐体 42的两侧均连接有出气支路 44， 同 一分气罐体 42上的两出气支路 44之间对称布置。 进气口 43与四条出气支路 44的 \¥0 2019/128816 卩（：17 \2018/122189
7 距离相同， 以利于进气储气罐 4分气均匀充分。 于其中一个分气罐体 42的下表面 设置有两个窜气口 45。
[0057] 本实施例的四缸电动空压机， 进气储气罐 4的进气口 43连接整车的空气过滤器 ， 从空气过滤器出来的空气先经由进气口 43进入进气罐体 41， 进气罐体 41对进 入的空气缓冲， 经过缓冲后的空气再经两侧的分气罐体 42通过四条对称的出气 支路 44均匀通往电动空压机上四个缸头 6上的进气端口 7 , 四条对称的出气支路 4 4直达电动空压机的四个缸头 6并均匀高效分气， 实现电动空压机的吸气过程。 进气储气罐 4对四缸电动空压机的四个缸头 6均能均匀分配进气， 减小进气负压 ， 有助于降低窜油量， 且该设计方式过滤了进气频率， 降低了进气噪音。
[0058] 电动空压机的第一活塞 13和第二活塞 15在往复运动过程中， 缸头 6内体积会发 生变化， 进而使得进气储气罐 4内的气体体积产生变化， 进而产生压力波动。 为 避免这种压力波动， 在一个分气罐体 42的下表面设置窜气口 45 , 经由独立的管 路引出罐外。 本实施例的四缸电动空压机， 不仅实现了传统管路设计具有的功 育^ 整体对称的结构有效起到了缓冲空气的作用， 降低了电动空压机的噪音， 实现了对进入电动空压机缸头 6空气的高效均分。
[0059] 进气储气罐 4代替传统的三通接头， 有效起到缓冲作用， 降低工作噪音。 其降 噪原理如下： 四缸电动空压机并不是简单的从外界吸入稳压气流， 由于各缸头 6 在进气过程中均会产生气流波动，因此四缸电动空压机进气系统中的气体波动是 极其复杂的。 在进气过程中，由于活塞的吸入作用,在缸头 6上的进气端口 7处形成 负压波，同时活塞与缸头 6的内壁摩擦产生的噪音也会通过进气传出。 进气储气罐 4, 缓冲进气压力形成的负压波， 使压力波动变小， 而对噪音也起到缓冲作用， 从而降低进气和活塞运动产生的噪音。
[0060] 本实施例的进气储气罐 4， 进气罐体 41、 分气罐体 42和出气支路 44由高强度塑 料一体成型。 本实施例的进气储气罐 4, 便于开模生产， 在保证整体强度的同时 降低了产品的重量， 符合车载系统对元器件安全性、 轻量性和紧凑性的要求。 进气储气罐 4和四条出气支路 44的一体式设计， 简化了进气管路， 缩小了安装空 间， 使安装起来更简便， 外观看起来也更简洁。 出气支路 44的端部设置有用于 装配 0形圈的环形沟槽 47。 出气支路 44的环形沟槽 47中嵌入 0形圈， 出气支路 44 \¥0 2019/128816 卩（：17 \2018/122189
8 直接卡接缸头 6上的进气端口 7 , 减少了管路、 卡箍等零部件的使用， 提高了进 气储气罐 4的装配效率。 进气罐体 41下表面的左右两侧均设置有两个装配耳 46， 装配耳 46上开设有螺栓孔。 通过螺栓、 装配耳 46将进气储气罐 4装配于电动机 3 的外壳上。
[0061] 各所述缸头 6上还分别设置有排气口， 所述四缸电动空压机还包括排气管路 8
， 排气管路 8的一端与缸头 6的排气口相连通、 另一端连接汽车的整车气路。 所 述排气管路 8采用铜管制成， 排气管路 8与缸头 6的排气口之间采用涂胶的方式实 现密封。 所述电动机接头也采用涂胶密封。 各接头连接方式的改变， 使得本发 明中的电动空压机的 等级提升到了 7。
[0062] 使用上述四缸电动空压机， 大气通过整车的空气过滤器后进入进气储气罐 4 ， 由进气储气罐 4分配到空压机的四个缸头 6 , 然后缸头 6内的活塞在电动机 3、 曲轴 11及连杆的作用下实现往复运动， 活塞向下运行的过程中缸头 6吸入气体， 当活塞上行时， 空压机进行压缩过程， 将吸气过程吸入的气体压缩后排出至整 车气路， 最终存储在整车的储气罐中备用。
[0063] 所述四缸电动空压机还包括两个用于降低缸头 6温度的电子风扇 5 , 其中一个 电子风扇 5位于左缸体 1外侧且位于左缸体 1的两个缸头 6之间， 另外一个电子风 扇 5位于右缸体 2外侧且位于右缸体 2的两个缸头 6之间。 电子风扇 5的设置使所述 电动空压机具备了独立冷却能力。
[0064] 本发明中未述及的部分采用或借鉴已有技术即可实现。
[0065] 本文中所描述的具体实施例仅仅是对本发明的精神所作的举例说明。 本发明所 属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或 采用类似的方式替代， 但并不会偏离本发明的精神或者超越所附权利要求书所 定义的范围。

Claims

\¥0 2019/128816 卩（：17 \2018/122189 9 权利要求书
[权利要求 1] 一种四缸电动空压机用曲轴装配结构， 其特征在于： 包括曲轴、 电动 机、 轴承、 平衡块和电机法兰； 曲轴驱动端的端面开设有轴孔， 轴孔 内壁设置有至少一个第一键槽， 曲轴驱动端的侧面设置有轴承装配座 ; 曲轴驱动端的轴承装配座装配轴承的内圈， 曲轴驱动端上于轴承的 外侧装配平衡块； 轴承的外圈装配连接电机法兰， 电动机的输出轴设 置有至少一个第二键槽， 电动机的输出轴插入曲轴驱动端的轴孔， 第 一键槽和第二键槽之间经键连接。
[权利要求 2] 根据权利要求 1所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 四缸电动空压机用曲轴装配结构还包括锁紧螺母， 曲轴驱动端的侧 面上且靠近端面的位置设置有外螺纹， 曲轴驱动端的外螺纹上螺纹连 接锁紧螺母以压紧平衡块。
[权利要求 3] 根据权利要求 1所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 四缸电动空压机用曲轴装配结构还包括缸体， 缸体内设置曲轴， 电 机法兰包括法兰盘和位于法兰盘中间位置的法兰套筒， 缸体经法兰盘 装配于电动机的输出轴一端的端面， 法兰套筒嵌入缸体内， 轴承的外 圈装配连接于法兰套筒内。
[权利要求 4] 根据权利要求 3所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 法兰盘装配连接电动机， 法兰盘的边沿位置设置有多个螺孔， 缸体 上设置有多个与螺孔对应的装配孔， 螺栓经装配孔连接螺孔以使缸体 装配连接法兰盘。
[权利要求 5] 根据权利要求 1所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 轴孔内壁设置一个第一键槽， 电动机的输出轴设置一个第二键槽， 第一键槽和第二键槽之间经一个平键连接。
[权利要求 6] 根据权利要求 1所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 轴孔内壁向曲轴的径向开设凹槽形成第一键槽。
[权利要求 7] 根据权利要求 1所述的四缸电动空压机用曲轴装配结构， 其特征在于
: 电动机的输出轴的侧面向其轴心开设凹槽形成第二键槽。 \¥0 2019/128816 卩（：17 \2018/122189
10
[权利要求 8] 一种四缸电动空压机， 其特征在于： 包括左缸体和右缸体， 还包括权 利要求 1至 7任一项所述的四缸电动空压机用曲轴装配结构， 电动机设 置在左、 右缸体之间， 左、 右缸体的顶端分别设置有两个缸头， 左缸 体顶端的两个缸头以及右缸体顶端的两个缸头各自均呈 V型布置， 所 述左、 右缸体内均设置有曲轴、 第一连杆、 第二连杆、 第一活塞和第 二活塞， 第一连杆的一端套置在曲轴上、 另一端与所述第一活塞相连 ， 第二连杆的一端套置在曲轴上、 另一端与所述第二活塞相连； 所述 电动机为双输出轴电机， 左、 右缸体内的曲轴分别由电动机的两根输 出轴驱动旋转， 曲轴旋转带动所述第一、 第二连杆作摆线运动， 进而 带动第一、 第二活塞作往复直线运动， 实现缸头的进、 排气。
[权利要求 9] 根据权利要求 8所述的四缸电动空压机， 其特征在于： 各所述缸头上 还分别设置有排气口， 所述四缸电动空压机还包括排气管路， 排气管 路的一端与缸头的排气口相连通、 另一端连接汽车的整车气路。
[权利要求 10] 根据权利要求 8所述的四缸电动空压机， 其特征在于： 所述四缸电动 空压机还包括两个用于降低缸头温度的电子风扇， 其中一个电子风扇 位于左缸体外侧且位于左缸体的两个缸头之间， 另外一个电子风扇位 于右缸体外侧且位于右缸体的两个缸头之间。
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EP3734074A4 (en) 2021-07-28
CN208184914U (zh) 2018-12-04
CN108757403B (zh) 2020-03-10
EP3734073A4 (en) 2021-07-21
WO2019128815A1 (zh) 2019-07-04

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