Brushless motor with split shell

Abstract

The brushless motor with the split type shell comprises the shell and an inner core assembly, the inner core assembly comprises a rotating shaft, the shell comprises an upper shell and a lower shell, the upper shell and the lower shell are matched to form an accommodating cavity used for accommodating the inner core assembly, at least partial area of the inner wall of the accommodating cavity is provided with a straight wall, and the inner core assembly is arranged in the accommodating cavity. The outer circumferential wall of the stator is provided with a straight wall matched with the containing cavity, at least part of the outer circumferential wall of the shell is provided with a straight wall, the two ends of the rotating shaft are provided with a first bearing and a second bearing, the upper shell and the lower shell are provided with a first semicircular groove and a second semicircular groove, and the first semicircular groove and the second semicircular groove are spliced to form a first round hole. The first bearing is limited in the first round hole, the upper shell and the lower shell are provided with a third semicircular groove and a fourth semicircular groove, the third semicircular groove and the fourth semicircular groove are spliced to form a second round hole, the second bearing is limited in the second round hole, the first round hole and the second round hole are concentric and coaxial, installation is convenient, and concentricity is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brushless motor technical field, especially design a kind of brushless motor with split type shell. BACKGROUND

[0002] Brushless motor is an advanced motor technology, it discards the carbon brush and commutator used in traditional brush motor, thereby greatly improving the efficiency and life of motor, since there is no friction and wear of carbon brush, brushless motor is more stable in the process of operation, noise is also relatively low.In addition, brushless motor also has good speed regulating performance and higher power density, so that it is widely used in various industrial applications and daily life.In the brushless motor with shell commonly seen in market, shell usually adopts integrated design, in this design, the front end and rear end of motor shell are provided with circular hole for supporting bearing, the bearing at both ends of motor is often pressed into circular hole, and glue needs to be coated in circular hole before pressing, this installation mode is more troublesome, and installation precision is not high, if deviation occurs in pressing process, the center positions of bearings at both sides of motor can be inconsistent, so that the concentricity of bearings at both sides of motor appears deviation, which can directly affect the performance and effect of brushless motor, and further affect user's use experience, so it is necessary to improve. SUMMARY

[0003] The utility model discloses a brushless motor with split type shell, which has simple and reasonable structure and is easy to operate.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a brushless motor with split type shell, including shell and inner core assembly, the inner core assembly includes stator and rotor, the stator fixedly arranged in the shell, the rotor rotation is arranged in the stator, the rotor includes the pivot, the shell includes the upper casing and lower casing of split type setting, the upper casing is fixedly connected through the connecting piece between the lower casing, the upper casing and lower casing cooperation inside are formed with the accommodation cavity for accommodating the inner core assembly, the inner wall of the accommodation cavity is provided with straight wall for positioning at least partial area, the outer peripheral wall of stator is provided with straight wall of accommodating cavity adaptation, the outer peripheral wall of shell is provided with straight wall for positioning at least partial area, the both ends of the pivot are provided with first bearing and second bearing respectively, the upper casing and lower casing are provided with first semicircle recess and second semicircle recess of corresponding cooperation with first bearing respectively, first semicircle recess and second semicircle recess are spliced and form first circular hole, and first bearing is limited in the first circular hole, the upper casing and lower casing are provided with third semicircle recess and fourth semicircle recess of corresponding cooperation with second bearing respectively, third semicircle recess and fourth semicircle recess are spliced and form second circular hole, and second bearing is limited in the second circular hole, and the first circular hole and the second circular hole are concentric coaxial arrangement.

[0006] Further, the inner wall of the accommodation cavity is square, and the outer peripheral wall of the stator is square.

[0007] Further, the outer peripheral wall of the shell is square.

[0008] Further, the upper casing and the lower casing are divided by a plane that passes through the center line of the pivot.

[0009] Further, at least one first limiting rib is arranged on the upper casing and is in limiting cooperation with the stator.

[0010] Further, the first limiting rib is two, and is respectively located on both sides of the stator.

[0011] Further, at least one second limiting rib is arranged on the lower casing and is in limiting cooperation with the stator.

[0012] Further, the second limiting rib is two, and is respectively located on both sides of the stator.

[0013] Further, the upper casing and the lower casing are plastic parts.

[0014] Further, the plastic part is made of carbon fiber plastic.

[0015] The utility model discloses a beneficial effect is: the utility model discloses a kind of split housing's brushless motor of the utility model, the installation of bearing is more convenient, without glue, and the bearing concentricity of motor two ends is high after installation, straight wall for positioning is arranged in the inner wall of accommodating cavity, outer peripheral wall of shell, stator outer peripheral wall, so that stator is easier to be positioned in accommodating cavity, shell is also easier to be positioned when installation, by setting split housing outside inner core assembly, so that brushless motor can be directly installed into preset position as a whole when installation, in this way, it is not necessary to reserve special space to install each relevant part of brushless motor one by one any more, in addition, this split housing is convenient to install, can ensure that the center position of first bearing and second bearing is consistent, when installation, only need to install square stator to lower shell, so that first bearing is set in second semicircular groove, second bearing is set in fourth semicircular groove, then cover upper shell body, and upper shell body and lower shell body are fixed, so that first semicircular groove and second semicircular groove are spliced to form first circular hole, first bearing is limited in first circular hole, third semicircular groove and fourth semicircular groove are spliced to form second circular hole, second bearing is limited in second circular hole, without glue, the installation of first bearing and second bearing is more convenient, and first bearing and second bearing are not prone to deviation when installation, and concentricity is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram when the upper shell body of the utility model is separated;

[0018] Figure 3 It is the exploded structure schematic diagram of the utility model under first visual angle;

[0019] Figure 4 It is the exploded structure schematic diagram of the utility model under second visual angle;

[0020] Figure 5 It is the section structure schematic diagram of the utility model;

[0021] Figure 6 It is the structure schematic diagram of lower shell body;

[0022] Figure 7 It is the structure schematic diagram of upper shell body.

[0023] Figures 1-7Middle: 1, upper shell; 11, first semicircular groove; 12, third semicircular groove; 13, first limiting convex rib; 14, first mounting hole; 2, lower shell; 21, second semicircular groove; 22, fourth semicircular groove; 23, second limiting convex rib; 24, mounting column; 241, second mounting hole; 3, accommodating cavity; 4, rotating shaft; 41, first bearing; 42, second bearing; 5, stator; 6, rotor; 7, mounting screw. DETAILED DESCRIPTION

[0024] The utility model will be described further in connection with the drawings.

[0025] As Figures 1-7The brushless motor shown includes a split-type housing and an inner core assembly. The inner core assembly includes a stator 5 and a rotor 6. The stator 5 is fixedly disposed within the housing, and the rotor 6 is rotatably disposed within the stator 5. The rotor 6 includes a shaft 4. The housing includes a split upper housing 1 and a lower housing 2, which are fixedly connected by a connector. The upper housing 1 and the lower housing 2 cooperate to form a receiving cavity 3 for accommodating the inner core assembly. At least a portion of the inner wall of the receiving cavity 3 is provided with a straight wall for positioning. The outer peripheral wall of the stator 5 is provided with a straight wall adapted to the receiving cavity 3. At least a portion of the outer peripheral wall of the housing is provided with a useful... On the straight wall of the positioning, the two ends of the rotating shaft 4 are respectively provided with a first bearing 41 and a second bearing 42. The upper shell 1 and the lower shell 2 are respectively provided with a first semi-circular groove 11 and a second semi-circular groove 21 that correspond to and cooperate with the first bearing 41. The first semi-circular groove 11 and the second semi-circular groove 21 are joined together to form a first circular hole, and the first bearing 41 is limited in the first circular hole. The upper shell 1 and the lower shell 2 are respectively provided with a third semi-circular groove 12 and a fourth semi-circular groove 22 that correspond to and cooperate with the second bearing 42. The third semi-circular groove 12 and the fourth semi-circular groove 22 are joined together to form a second circular hole, and the second bearing 42 is limited in the second circular hole. The first circular hole and the second circular hole The bearings are arranged concentrically and coaxially, making installation easier without the need for glue. After installation, the bearings at both ends of the motor have high concentricity. Straight walls for positioning are provided on the inner wall of the receiving cavity 3, the outer peripheral wall of the outer shell, and the outer peripheral wall of the stator 5, making it easier to position the stator 5 within the receiving cavity 3 and the outer shell during installation. By using a separate outer shell outside the inner core assembly, the brushless motor can be installed as a whole directly into the preset position during installation. This eliminates the need to reserve dedicated space for the individual installation of each component. Furthermore, this separate outer shell facilitates installation and ensures that the center positions of the first bearing 41 and the second bearing 42 are aligned. During installation, simply install the square stator 5 into the lower housing 2, so that the first bearing 41 rests in the second semi-circular groove 21 and the second bearing 42 rests in the fourth semi-circular groove 22. Then, cover the upper housing 1 and fix the upper housing 1 and the lower housing 2 together, so that the first semi-circular groove 11 and the second semi-circular groove 21 are joined together to form the first circular hole, and the first bearing 41 is confined in the first circular hole. The third semi-circular groove 12 and the fourth semi-circular groove 22 are joined together to form the second circular hole, and the second bearing 42 is confined in the second circular hole. No glue is needed, making the installation of the first bearing 41 and the second bearing 42 more convenient. Moreover, the first bearing 41 and the second bearing 42 are less likely to deviate during installation, and have high concentricity.

[0026] Preferably, in this embodiment, the inner wall of the accommodating cavity 3 is square, and the outer peripheral wall of the stator 5 is square to match the accommodating cavity 3, making it easier for the stator 5 to be positioned within the accommodating cavity 3.

[0027] Preferably, in this embodiment, the outer peripheral wall of the outer shell is square, making it easier to position the outer shell during installation.

[0028] Preferably, in this embodiment, refer to Figure 1 The upper housing 1 and the lower housing 2 are configured with a plane passing through the center line of the rotating shaft 4 as the interface to ensure the centering accuracy of the rotating shaft 4. This also allows the upper housing 1 and the lower housing 2 to be more precisely connected during assembly, thereby improving the stability and reliability of the overall equipment.

[0029] Preferably, in this embodiment, refer to Figure 7 The upper housing 1 is provided with at least one first limiting rib 13 that cooperates with the stator 5 for limiting. In order to further improve the limiting effect, preferably, in this embodiment, there are two first limiting ribs 13, which are located on both sides of the stator 5 respectively, to ensure that the position of the stator 5 in the upper housing 1 is more stable and accurate, and can effectively prevent the stator 5 from being displaced or loosened during use, thereby improving the reliability and service life of the entire device.

[0030] Preferably, in this embodiment, refer to Figure 6 The lower housing 2 is provided with at least one second limiting rib 23 that cooperates with the stator 5 for limiting. In order to further improve the limiting effect, preferably, in this embodiment, there are two second limiting ribs 23, which are located on both sides of the stator 5 respectively, to ensure that the position of the stator 5 in the lower housing 2 is more stable and accurate, and can effectively prevent the stator 5 from being displaced or loosened during use, thereby improving the reliability and service life of the entire device.

[0031] Preferably, in this embodiment, both the upper shell 1 and the lower shell 2 are plastic parts. Preferably, in this embodiment, in order to achieve a better lightweight effect, the plastic parts are made of carbon fiber plastic.

[0032] Preferably, in this embodiment, refer to Figures 3-4The connecting component is a mounting screw 7. The upper housing 1 is provided with a plurality of first mounting holes 14, and the lower housing 2 is provided with a plurality of second mounting holes 241 corresponding to the first mounting holes 14. Specifically, the lower housing 2 is provided with mounting posts 24 corresponding to the first mounting holes 14, and the mounting posts 24 are provided with the second mounting holes 241. The mounting screw 7 passes through the first mounting holes 14 and is fixedly connected to the second mounting holes 241. This connection method not only ensures the stable and reliable connection between the upper housing 1 and the lower housing 2, but also has good disassembly and maintenance convenience.

[0033] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A brushless motor with a split housing, comprising a housing and an inner core assembly, the inner core assembly comprising a stator (5) and a rotor (6), the stator (5) being fixedly disposed within the housing, the rotor (6) being rotatably disposed within the stator (5), the rotor (6) comprising a shaft (4), characterized in that: The outer shell includes an upper shell (1) and a lower shell (2) that are separately arranged. The upper shell (1) and the lower shell (2) are fixedly connected by a connector. The upper shell (1) and the lower shell (2) cooperate to form a receiving cavity (3) for accommodating the inner core assembly. At least a portion of the inner wall of the receiving cavity (3) is provided with a straight wall for positioning. The outer peripheral wall of the stator (5) is provided with a straight wall that matches the receiving cavity (3). At least a portion of the outer peripheral wall of the outer shell is provided with a straight wall for positioning. The two ends of the rotating shaft (4) are respectively provided with a first bearing (41) and a second bearing (42). The upper shell (1) and the lower shell (2) The upper housing (1) and the lower housing (2) are respectively provided with a first semi-circular groove (11) and a second semi-circular groove (21) corresponding to the first bearing (41). The first semi-circular groove (11) and the second semi-circular groove (21) are joined together to form a first circular hole. The first bearing (41) is limited in the first circular hole. The upper housing (1) and the lower housing (2) are respectively provided with a third semi-circular groove (12) and a fourth semi-circular groove (22) corresponding to the second bearing (42). The third semi-circular groove (12) and the fourth semi-circular groove (22) are joined together to form a second circular hole. The second bearing (42) is limited in the second circular hole. The first circular hole and the second circular hole are arranged concentrically and coaxially.

2. A brushless motor with a split-type housing according to claim 1, characterized in that: The inner wall of the accommodating cavity (3) is square, and the outer peripheral wall of the stator (5) is square to match the accommodating cavity (3).

3. A brushless motor with a split-type housing according to claim 1, characterized in that: The outer peripheral wall of the outer shell is square.

4. A brushless motor with a split-type housing according to claim 1, characterized in that: The upper shell (1) and the lower shell (2) are configured with the plane passing through the center line of the rotating shaft (4) as the interface.

5. A brushless motor with a split-type housing according to claim 1, characterized in that: The upper housing (1) is provided with at least one first limiting rib (13) that cooperates with the stator (5) for limiting.

6. A brushless motor with a split-type housing according to claim 5, characterized in that: There are two first limiting ribs (13), which are located on both sides of the stator (5).

7. A brushless motor with a split-type housing according to claim 1, characterized in that: The lower housing (2) is provided with at least one second limiting rib (23) that cooperates with the stator (5) for limiting.

8. A brushless motor with a split-type housing according to claim 7, characterized in that: There are two second limiting ribs (23), which are located on both sides of the stator (5).

9. A brushless motor with a split-type housing according to claim 1, characterized in that: Both the upper shell (1) and the lower shell (2) are made of plastic.

10. A brushless motor with a split-type housing according to claim 9, characterized in that: The plastic component is made of carbon fiber plastic.

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