CN207677518U - Permanent Magnet Brushless DC Motors for Automotive Windows - Google Patents

Abstract

The technical issues of the utility model provides a kind of automotive window permanent-magnet brushless DC electric machine, it is solved be ensuring that under the requirement of the operation is stable, provides the permanent-magnet brushless DC electric machine with installation sensor support frame and stepped armature spindle on a kind of stator.A supporting rack is fixed on stator core, support a mounting plate, mounting plate that sensor and connection line are housed, sensor is avoided and is directly embedded into stator punching on supporting rack again, play it is separately installed, for later stage sensor installation and maintenance replacement bring great convenience；Rotor core makes a multi-diameter shaft, there is the jump-ring slot of step cutting pattern and the fixed permanent magnet axial movement convenient for round ring magnet location and installation on surface, the design of stationary part and rotor portion makes motor integrally assemble simply, convenient for later stage maintenance and inspection, there is higher efficiency compared to traditional vehicle window motor, it is more energy saving.

Description

Permanent Magnet Brushless DC Motors for Automotive Windows

technical field

The utility model relates to the field of permanent magnet motors, in particular to a permanent magnet brushless DC motor for automobile windows.

Background technique

In the current automobile industry, the electric lifting and lowering of automobile window glass has become a standard configuration. The motor for the window of the car is the power source for driving the window regulator. The quality and controllability of the motor performance determine the stability and safety of the car window glass lifting work.

At present, the motors used in automobile windows are basically permanent magnet DC brushed motors. There are many disadvantages in brushed motors. Due to the existence of brush commutators, electric sparks may be generated and the service life is short. At the same time, the brushed motors are large in size and The weight is large and the efficiency is very low, generally only between 20% and 40%. However, the current permanent magnet brushless DC motor technology is relatively mature, both in terms of mechanical structure design and electronic controllers. The efficiency of this motor can be as high as 90% and it has a long life and small size. Small weight, good performance and many other advantages.

Contents of the invention

The purpose of the utility model is to provide a permanent magnet brushless DC motor for automobile windows. The technical problem solved by the utility model is to provide a permanent magnet brushless DC motor with a sensor support frame and a stepped rotor shaft on the stator under the requirement of ensuring stable operation, which is more efficient than the traditional motor for car windows. Smaller size and lighter weight.

In order to achieve the above object, the utility model adopts the following technical scheme: a permanent magnet brushless DC motor for automobile windows, comprising a stator part and a rotor part, characterized in that the stator part comprises: stator iron core (4), Mounting plate (1), support frame (2), described rotor part comprises: rotor iron core (7), permanent magnet (3), retaining spring (6); Described stator iron core (7) is made of silicon steel Sheets are stacked and formed, and there is a groove (11) on its upper surface, which is used to install the support frame (2). The change material of the support frame (2) is a high-temperature-resistant plastic, a hollow cylinder, and a thickness of 2mm. There are 9 rectangular slots (10) on the outer surface, which are used for cross-slot connection of the coil (5), and there are 3 cylindrical steps (9) on the upper end surface, which are used to fix the mounting plate (1), and the mounting plate ( 1) There are three positioning holes (8), which are fixed with the cylindrical steps (9) on the support frame (2), and three sensors and connecting lines are installed on its surface. The rotor core (7) is a stepped shaft, on which The cylindrical step (13) is used to locate the lower surface of the permanent magnet (3), and the permanent magnet (3) is a surface-mounted circular ring, which is fixed with the rotor core (7) by high-temperature glue, and the rotor core Circlip groove (12) on (7) is used for fixing the upper surface of permanent magnet (3), prevents axial movement.

The beneficial results of the permanent magnet brushless DC motor for automobile windows proposed by the utility model are: a stepped shaft of the rotor iron core is designed, so that the installation and positioning of the circular permanent magnet and the rotor surface are accurate, simple and convenient; a kind of installation is designed On the support frame of the stator iron core, the sensor and the stator punching plate are separated and installed, which is convenient for the installation, replacement and maintenance of the sensor; Compared with the magnetic DC brushed motor, the efficiency is about 40% higher, the volume and weight are only about 75% of the original motor, the power density is greatly improved, and because there is no friction spark of the brush and commutator, the service life is longer. Longer, the structure is simpler, and the manufacturing and assembly are convenient.

Description of drawings

Figure 1 The overall structural assembly diagram of the permanent magnet brushless DC motor;

Figure 2 stator core;

Figure 3 rotor core;

Figure 4 Mounting plate;

Figure 5 support frame;

Figure 6 Assembly view of stator core, support plate and mounting plate;

Figure 7 The exploded view of the assembly view of the stator core, support plate and mounting plate;

Fig. 8 Assembly view of rotor core, permanent magnet and circlip;

Fig.9 Exploded view of rotor core, permanent magnet and circlip assembly view.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1, the permanent magnet brushless DC motor for automobile windows includes: a permanent magnet brushless DC motor for automobile windows, including a stator part and a rotor part, the stator part is as shown in Figure 6, and consists of a stator core ( 4) Composed of mounting plate (1) and support frame (2), there is a groove (11) on the upper surface of the stator core, and the support frame (2) is a high-temperature-resistant circular plastic material with a thickness of 2 mm, and the lower end surface is embedded In the groove (11) of the stator core, glue it firmly with fixing glue. As shown in Figure 5, there are nine rectangular slots (10) on the outer surface of the support frame (2) for cross-slot connection of the coil (5). There are 3 cylindrical steps (9) on the upper surface of the support frame (2) to be fixed with the mounting plate (1), as shown in Figure 4, the mounting plate (1) has 3 positioning holes (8), through the fixing glue and The cylindrical step (9) is glued and fixed, and the lower surface of the mounting plate (1) is equipped with 3 sensors and connecting lines. Compared with the traditional sensor, which is directly installed inside the stator core, the mounting plate (1) can be installed separately. , to facilitate the installation and replacement of the sensor; the rotor part is shown in Figure 8 and consists of a rotor core (7), a permanent magnet (3) and a retaining spring (6). As shown in Figure 3, the rotor core (7) is a The stepped shaft has a cylindrical step (13) for positioning the installation position of the permanent magnet (3) and a retaining ring groove (12) for fixing the permanent magnet (3). , the lower surface fits with the cylindrical step (13) of the rotor iron core, and has an interference fit with the rotor iron core (7), and the upper surface is also fixed with a jumper (6) to prevent axial movement.

Claims (4)

1. A permanent magnet brushless DC motor for automobile windows, comprising a stator part and a rotor part, is characterized in that said stator part comprises: stator iron core (4), mounting plate (1), support frame (2) , the rotor part includes: a rotor core (7), a permanent magnet (3), and a circlip (6); the stator core (7) is made of laminated silicon steel sheets, and its upper surface has a concave Groove (11), used to install the support frame (2), the support frame (2) is used to support the installation plate (1), and the rotor core (7) is fixed with the circular permanent magnet (3) One. 2. The permanent magnet brushless DC motor for automobile windows according to claim 1, characterized in that: the material of the support frame (2) is a high temperature resistant plastic, a hollow cylinder with a thickness of 2mm, and the outer surface There are 9 rectangular slots (10) for cross-slot connection of the coil (5), and 3 cylindrical steps (9) on the upper end surface thereof for fixing the mounting plate (1). 3. The permanent magnet brushless DC motor for automobile windows according to claims 1 and 2, characterized in that: the mounting plate (1) has three positioning holes (8), which are fixed to its cylindrical steps (9), Its surface mounts 3 sensors and connecting wires. 4. The permanent magnet brushless DC motor for automobile windows according to claim 1, characterized in that: the rotor core (7) is a stepped shaft, and the cylindrical steps (13) on it are used for positioning the permanent The lower surface of the magnet (3), the permanent magnet (3) is a surface-mounted circular ring, fixed with the rotor core (7) by high-temperature glue, and the circlip groove (12) on the rotor core (7) Used to fix the upper surface of the permanent magnet (3) to prevent axial movement.