CN216489931U - Brushless DC motor driven electronic duplex pump for speed changer - Google Patents

Abstract

The utility model belongs to the part for the car in the machinery trade, in particular to brushless DC motor drive electron duplex pump for derailleur. The pump cover is fixedly connected with the periphery of a boss at the right end of the motor body in a sealing mode through a sealing ring, the pump cover is fixedly connected with the pump body through a positioning pin and a clamp spring, a shaft is axially arranged at the centers of the pump body and the pump cover, the right end head of the shaft is connected with the axle center of a driving gear through a cross sliding block, a sealing connecting sleeve is arranged on the periphery of the shaft connecting part of the shaft and the driving gear, the driving gear is in meshing transmission connection with a driven gear, and an inner rotor is arranged on the shaft in an inner groove on the left side of the pump body through a round key. The electronic oil pump can provide oil for the high-pressure execution system and the low-pressure lubricating pump system at the same time, so that the system efficiency is improved, and the size of the transmission is optimized. And simultaneously, the cost is reduced. The brushless direct current motor is used, so that the rotating speed is stable, and the output flow is stable.

Description

Brushless DC motor driven electronic duplex pump for speed changer

Technical Field

The utility model belongs to the part for the car in the machinery trade, in particular to brushless DC motor drive electron duplex pump for derailleur.

Background

The hydraulic system of the transmission of the traditional passenger vehicle needs to be simultaneously provided with an electronic oil pump for each of a high-pressure execution system and a low-pressure lubrication system so as to ensure the oil supply of the system. This results in a high cost, poor space utilization and low efficiency transmission.

Disclosure of Invention

An object of the utility model is to overcome above-mentioned technique not enough, provide a compact structure, the transmission is steady, the reliable performance brushless DC motor drive electron dual pump for derailleur.

The utility model provides a technical scheme that technical problem adopted is: the brushless direct current motor driven electronic duplex pump for the transmission comprises a motor body, a rotor shaft, a stator assembly, a rotor assembly, a motor cover, a controller chip assembly, a controller cover, a pump body, a pump cover, a shaft, a seat ring, a driving gear and a driven gear, and is characterized in that the periphery of a boss at the right end of the motor body is fixedly connected with the pump cover in a sealing way through a sealing ring, the pump cover is fixedly connected with the pump body through a positioning pin and a snap spring, the shaft is axially arranged at the centers of the pump body and the pump cover, a flat hole is arranged at the left end head of the shaft, a shaft flat arranged at the right end head of the rotor shaft is tightly matched and arranged in the flat hole, the right end head of the shaft is connected with the shaft center of the driving gear through a cross slide block, a sealing connecting sleeve is arranged at the periphery of the shaft connecting part of the shaft and the driving gear, the driving gear is engaged and connected with the driven gear, the driving gear and the driven gear are arranged in the seat ring, the seat ring is tightly arranged in an inner hole at the right end head of the pump body through the sealing ring, an inner rotor is arranged on a shaft in an inner groove on the left side of the pump body through a round key, an outer rotor is arranged on the periphery of the inner rotor, and a rear cover is fixedly arranged on the right end face of the pump body.

The utility model has the advantages that: the brushless direct current motor driven electronic duplex pump for the transmission can provide oil for a high-pressure execution system and a low-pressure lubricating pump system simultaneously through one electronic oil pump, thereby improving the system efficiency and optimizing the volume of the transmission. And simultaneously, the cost is reduced. The brushless direct current motor is used, so that the rotating speed is stable, and the output flow is stable. And the rotating speed control mode of shaft head sensing is adopted, so that the rotating speed control precision is high. The low-pressure system oil pump adopts an inner meshing gear rotor, so that the operation is stable, the noise is low, and the flow output is stable. The high-pressure system oil pump adopts an external gear rotor and can normally run under the oil pressure of 0-7 Mpa.

Drawings

The following description is made in detail by way of example with reference to the accompanying drawings.

Fig. 1 is a structural diagram of an electronic tandem pump driven by a brushless direct current motor for a transmission.

Fig. 2 is a sectional view a-a in fig. 1.

In the figure: 1-an electric machine body; 1-1-a spindle nose magnet; 1-2-a spindle nose magnet bracket; 1-3-rotor shaft; 1-4-rotor assembly; 1-5-permanent magnet; 1-6-magnet reinforcing shell; 1-7-framework oil seal; 1-8-a stator assembly; 1-9-wave washer; 1-10-axial flat; 2-motor cover; 3-controller cover; 4-a thermally conductive gasket; 5, ventilating paste; 6-pump cover; 7-a pump body; 7-1-round bond; 7-2-crosshead shoe; 7-3-seat ring; 7-4-drive gear; 7-5-driven gear; 7-6-inner rotor; 7-7-outer rotor; 7-8-axis; 7-9-a positioning sleeve; 7-10-clamp spring; 7-11-sealing connecting sleeve; 8-rear cover; 9-a positioning pin; 10-a controller chip assembly; 11-connecting bridge assembly.

Detailed Description

In the embodiment, referring to attached figures 1 and 2, the brushless direct current motor drive electronic duplex pump for the transmission is characterized in that a rotor shaft 1-3 is arranged at the center in a motor body 1 through a ball bearing, a rotor assembly 1-4 is arranged on the periphery of the rotor shaft 1-3, a permanent magnet 1-5 is arranged on the periphery of the rotor assembly 1-4, and a magnet reinforcing shell 1-6 is fixedly arranged on the right end face of the rotor assembly 1-4 and the permanent magnet 1-5. The inner wall of the motor body 1 is provided with a stator assembly 1-8, and a shaft head magnet 1-1 is arranged on the left end head of the rotor shaft 1-3 through a shaft head magnet bracket 1-2. The left end face of the motor body 1 is sealed and fixed with the motor cover 2 by a sealing ring, and a controller chip assembly 10 connected with the stator assemblies 1-8 by a connecting bridge 11 is arranged in the shell of the motor cover 2. The controller cover 3 with the radiating fins is fixed on the left end face of the motor cover 2 in a sealing mode through a sealing ring. The controller cover 3 is provided with a heat conducting gasket 4, and the right side edge of the motor cover 2 is provided with a ventilating paste 5. A framework oil seal 1-7 is arranged on a rotor shaft 1-3 in a boss on the right side of a motor body 1, a wave washer 1-9 is arranged on the left side face of the framework oil seal 1-7, a shaft flat 1-10 is manufactured at the right end of the rotor shaft 1-3, and the rotor shaft 1-3 is fixedly connected with the left end of a connecting shaft 7-8 through the shaft flat 1-10. A shoulder is arranged on the left end face of the left pump body 7 of the shaft 7-8, a snap spring 7-10 is arranged on the shoulder, the left end face of the pump body 7 is axially and fixedly connected with a pump cover 6 through the snap spring 7-10 and a positioning pin 9, and the pump cover 6 is fixedly connected with a right boss of the motor body 1 through a sealing ring. The connecting section of the shaft 7-8 and the shaft flat 1-10 of the rotor shaft 1-3 is positioned at the center hole position of the pump cover 6, an inner rotor 7-6 is arranged on the shaft 7-8 of the left inner hole section of the pump body 7 by a round key 7-1, and an outer rotor 7-7 is arranged at the periphery of the inner rotor 7-6. The inner hole of the right end head of the shaft 7-8 is connected with the left end head of the driving gear 7-4 through the crosshead shoe 7-2, and the sealing connecting sleeve 7-11 is sleeved on the right end head of the shaft 7-8 and the periphery of the left end head of the driving gear 7-4. A seat ring 7-3 is arranged in an inner hole at the right end of the pump body 7, a driven gear 7-5 which is in meshing transmission connection with a driving gear 7-4 is arranged in the seat ring 7-3, and a rear cover 8 is fixed outside the right end face of the pump body 7. And a positioning sleeve 7-9 is arranged on the outer circumferential surface of the pump body 7.

The utility model discloses a theory of operation is: the controller of the brushless direct current motor drive electronic duplex pump for the transmission is arranged at the end part of a motor shaft, a reluctance type sensor is adopted, an induction magnet is pressed into the end part of the motor shaft in an interference mode, the output end of an electronic rotor shaft 1-3 is of a flat square structure and is matched with a duplex low-pressure oil pump shaft 7-8, and an oil pump inner rotor 7-6 is connected with the oil pump shaft 7-8 through a round key 7-1 and is axially fixed through a snap spring 7-10. The oil pump shaft 7-8 is connected with the high-pressure pump driving gear 7-4 through the cross slide block 7-2, and therefore the two oil pumps can run simultaneously. The controller senses the rotating speed of the rotor shafts 1-3 through the sensing magnets and feeds back to the transmission ECU, the transmission ECU gives a rotating speed instruction to the controller according to requirements, the controller controls the rotating speed of the motor through adjusting the output duty ratio, the electronic rotor shafts 1-3 rotate to drive the low-pressure oil pump shaft to rotate and further drive the oil pump inner rotor 7-6 to rotate, the low-pressure pump outputs pressure oil, the low-pressure oil pump shaft 7-8 rotates to drive the high-pressure pump gear shaft to rotate, and the high-pressure pump outputs the pressure oil.

Claims (1)

1. A brushless direct current motor driven electronic duplex pump for a speed changer comprises a motor body (1), a rotor shaft (1-3), a stator assembly (1-8), a rotor assembly (1-4), a motor cover (2), a controller chip assembly (10), a controller cover (3), a pump body (7), a pump cover (6), a shaft (7-8), a seat ring (7-3), a driving gear (7-4) and a driven gear (7-5), and is characterized in that the periphery of a boss at the right end of the motor body (1) is fixedly connected with the pump cover (6) through a sealing ring in a sealing way, the pump cover (6) is fixedly connected with the pump body (7) through a positioning pin (9) and a snap spring (7-10), the shaft (7-8) is axially arranged at the centers of the pump body (7) and the pump cover (6), and a flat hole is arranged at the left end of the shaft (7-8), a shaft flat (1-10) arranged at the right end of a rotor shaft (1-3) is tightly matched and arranged in a flat hole, the right end of the shaft (7-8) is connected with the axle center of a driving gear (7-4) through a cross slide block (7-2), a sealing connecting sleeve (7-11) is arranged at the periphery of the shaft connection part of the shaft (7-8) and the driving gear (7-4), the driving gear (7-4) is in meshing transmission connection with a driven gear (7-5), the driving gear (7-4) and the driven gear (7-5) are arranged in a seat ring (7-3), the seat ring (7-3) is tightly fixed in an inner hole at the right end of the pump body (7) by a sealing ring, an inner rotor (7-6) is arranged on the shaft (7-8) in an inner groove at the left side of the pump body (7) by a round key (7-1), an outer rotor (7-7) is arranged at the periphery of the inner rotor (7-6), and a rear cover (8) is fixedly arranged on the right end face of the pump body (7).

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