Stator fixing structure in housing

Abstract

The utility model discloses a fixing structure of a stator in a shell, which comprises a volute, a rotor sleeve, a shell assembly, a screw, a stator assembly and a fixing ring, and the screw is rotatably connected in a through hole formed in the volute; according to the utility model, the main body shell is used as a support, and the volute and the rotor sleeve are fixed on the main body shell through the screws, so that the axial displacement of the rotor sleeve is limited, and the axial displacement of the stator assembly is limited through the combined action of the rotor sleeve, the fixing ring and the main body shell; the platform is matched with the first boss to prevent the middle stator from rotating in the main body shell around the axis; a grounding piece on the main body shell is inserted into the second groove to realize a grounding function of the middle stator, and the third boss is inserted into the shell groove to limit the middle stator to rotate around the axis in the main body shell; the R grooves are matched with the ribs to limit the rotation of the middle stator in the main body shell around the axis, the stator fixing structure is simple, the production efficiency is improved, and the manufacturing cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor stator's fixed structure in the shell technical field, especially in fixed structure of stator in the shell. BACKGROUND

[0002] Brushless motor is widely used in the industry of automobile, household appliance, etc., and the stator is an important component of the brushless motor. The fixing structure of the stator in the shell will affect the reliability and manufacturing cost of the product. The stator fixed firmly can significantly reduce the vibration generated during the operation of the motor, which not only helps to reduce the noise level, but also prevents the loosening or damage of parts caused by vibration. Good fixing method increases the rigidity of the entire motor structure, so that the motor can work stably under higher load and more severe working conditions. The fixed stator can better protect the winding coil and its connecting line from external factors such as physical impact or chemical corrosion. By tightly contacting the stator with the motor shell or other cooling elements, heat can be effectively conducted to help maintain the motor temperature within a safe range and prolong its service life. However, the common fixing method of brushless motor stator on the market has obvious defects: the stator fixing structure is too complex, resulting in low production efficiency and high manufacturing cost. Therefore, it is necessary to design a fixing structure of stator in the shell. SUMMARY

[0003] The utility model aims at providing a kind of fixed structure of stator in the shell, to solve the defects of the existing stator fixing structure being too complex, resulting in low production efficiency and high manufacturing cost.

[0004] To solve the above technical problems, the utility model provides the following technical scheme:

[0005] A kind of fixed structure of stator in the shell, including volute, rotor sleeve, shell assembly, screw, stator assembly and fixed ring, the through hole of volute is connected with screw rotation, the through hole of rotor sleeve is penetrated by screw, the bottom of screw is fixedly connected in main body shell of shell assembly, second boss is fixedly connected in main body shell, and lower insulating sleeve in stator assembly is fixedly connected with second boss.

[0006] As a further technical scheme of the utility model, the shell assembly is composed of shell groove, mounting lug, first boss, rib, second boss, grounding sheet and main body shell, and the mounting lug, first boss, rib and grounding sheet are fixedly connected in main body shell, and the shell groove is formed in main body shell.

[0007] As a further technical scheme of the utility model, the stator assembly is composed of a middle stator, an upper insulating sleeve, a lower insulating sleeve, a second groove, a platform, a third boss and an R groove, the upper insulating sleeve is fixedly connected to the top of the middle stator, and the lower insulating sleeve is fixedly connected to the bottom of the middle stator.

[0008] As a further technical scheme of the utility model, the middle stator is internally fixedly connected to the third boss and the platform in a symmetrical manner, and the platform is connected to the first boss in a matched manner.

[0009] As a further technical scheme of the utility model, the third boss is provided with the second groove, and the second groove is sleeved with a grounding sheet, and the third boss is connected to the shell groove in a matched manner.

[0010] As a further technical scheme of the utility model, the second groove is provided with the R groove, and the R groove is sleeved with a rib.

[0011] As a further technical scheme of the utility model, the top of the upper insulating sleeve is tightly fixed with a fixed ring, and the top of the fixed ring is tightly fixed with a rotor sleeve.

[0012] The stator fixing structure in the shell body has the advantages that the rotor sleeve is fixed in the main body shell through the screw, thereby limiting the axial displacement of the rotor sleeve, the axial displacement of the stator assembly is limited through the cooperation of the rotor sleeve, the fixed ring and the main body shell, the fixed ring is made of rubber material, the manufacturing error and the interference fit problem of each part are eliminated by utilizing the stress deformation characteristics of the rubber material, the end faces of the volute, the rotor sleeve and the main body shell can be tightly fitted, the platform is matched with the first boss to prevent the middle stator from rotating around the shaft in the main body shell, the grounding sheet on the main body shell is inserted into the second groove to realize the stator grounding function, the third boss is inserted into the shell groove to further limit the rotation of the middle stator around the shaft in the main body shell, the R groove is matched with the rib to further limit the rotation of the middle stator around the shaft in the main body shell, the stator fixing structure is simple, which is beneficial to improving the production efficiency and reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is the overall structural drawing of the utility model;

[0015] Figure 2 It is the overall sectional view of the utility model.

[0016] Figure 3 is a sectional view of the stator assembly of the utility model;

[0017] Figure 4 is a top view of the shell assembly of the utility model;

[0018] Figure 5 is a top view of the stator assembly of the utility model.

[0019] In the figure: 1, volute; 2, rotor sleeve; 3, shell assembly; 4, screw; 5, stator assembly; 6, fixed ring; 301, shell groove; 302, mounting lug; 303, first boss; 304, rib; 305, second boss; 306, grounding piece; 307, main body shell; 501, middle stator; 502, upper insulating sleeve; 503, lower insulating sleeve; 504, second groove; 505, platform; 506, third boss; 507, R slot. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0021] In the description of the utility model, it is necessary to explain that, unless explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0022] Please refer to the drawings of the utility model Figure 1 - the drawings of the utility model Figure 5The utility model provides a kind of fixed structure of stator in shell, including volute 1, rotor sleeve 2, shell assembly 3, screw 4, stator assembly 5 and fixed ring 6, screw 4 is rotationally connected in the through hole of volute 1, the through hole of rotor sleeve 2 is passed through the screw 4, the bottom of screw 4 is fixedly connected in main body shell 307 in shell assembly 3, main body shell 307 is fixedly connected second boss 305 inside, and second boss 305 is fixedly connected with lower insulating sleeve 503 in stator assembly 5;Shell assembly 3 is composed of shell groove 301, mounting lug 302, first boss 303, muscle 304, second boss 305, grounding piece 306 and main body shell 307, and mounting lug 302, first boss 303, muscle 304 and grounding piece 306 are fixedly connected in main body shell 307, and shell groove 301 is set on main body shell 307;Stator assembly 5 is composed of middle stator 501, upper insulating sleeve 502, lower insulating sleeve 503, second groove 504, platform 505, third boss 506 and R groove 507, and upper insulating sleeve 502 is fixedly connected on the top of middle stator 501, and lower insulating sleeve 503 is fixedly connected on the bottom of middle stator 501;Third boss 506 and platform 505 are fixedly connected inside middle stator 501 symmetrically, and platform 505 is connected with first boss 303;Second groove 504 is set on third boss 506, and grounding piece 306 is sleeved in second groove 504, and third boss 506 is connected with shell groove 301;R groove 507 is set in second groove 504, and muscle 304 is sleeved in R groove 507, and muscle 304 is connected with R groove 507, so that the rotation of middle stator 501 around the axis in main body shell 307 is limited;Upper insulating sleeve 502 top is tightly fixed ring 6, fixed ring 6 top is tightly rotor sleeve 2, and fixed ring 6 eliminates the manufacturing error and interference fit problem of each part.

[0023] Specifically, in use, first, the volute 1 and the rotor sleeve 2 are fixed on the main body shell 307 by the screw 4, so as to limit the axial displacement of the rotor sleeve 2, the axial displacement of the stator assembly 5 is limited by the rotor sleeve 2, the fixing ring 6 and the main body shell 307, the fixing ring 6 is made of rubber material, the manufacturing error and the interference fit problem of each part are eliminated by using the deformation characteristics of the rubber material, so that the end faces of the volute 1, the rotor sleeve 2 and the main body shell 307 can be tightly fitted; the platform 505 cooperates with the first boss 303 to prevent the middle stator 501 from rotating around the axis in the main body shell 307; the grounding sheet 306 on the main body shell 307 is inserted into the second groove 504 to realize the stator grounding function, the third boss 506 is inserted into the shell groove 301 to further limit the rotation of the middle stator 501 around the axis in the main body shell 307; the R groove 507 cooperates with the rib 304 to further limit the rotation of the middle stator 501 around the axis in the main body shell 307, the stator fixing structure is simple, which is beneficial to improve the production efficiency and reduce the manufacturing cost.

[0024] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside the intercommunication. For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0025] The device embodiments described above are only schematic, wherein the units described as separate components can or can not be physically separate, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiments. Those skilled in the art can understand and implement without creative labor.

[0026] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A structure for fixing a stator in a casing, comprising a volute (1), a rotor sleeve (2), a casing assembly (3), a screw (4), a stator assembly (5) and a fixing ring (6), characterized in that: The volute (1) is provided with a through hole for connecting a screw (4), the screw (4) penetrates the through hole of the rotor sleeve (2), the bottom of the screw (4) is fixedly connected to the main shell (307) in the shell assembly (3), the main shell (307) is fixedly connected with a second boss (305) inside, and the second boss (305) is fixedly connected with a lower insulating sleeve (503) in the stator assembly (5).

2. The structure for fixing the stator in the housing according to claim 1, characterized in that: The shell assembly (3) is composed of a shell groove (301), a mounting lug (302), a first boss (303), a rib (304), a second boss (305), a grounding sheet (306) and a main shell (307), the mounting lug (302), the first boss (303), the rib (304) and the grounding sheet (306) are fixedly connected in the main shell (307), and the main shell (307) is provided with the shell groove (301).

3. The structure for fixing the stator in the housing according to claim 1, characterized in that: The stator assembly (5) is composed of a middle stator (501), an upper insulating sleeve (502), a lower insulating sleeve (503), a second groove (504), a platform (505), a third boss (506) and an R slot (507), the upper insulating sleeve (502) is fixedly connected to the top of the middle stator (501), and the lower insulating sleeve (503) is fixedly connected to the bottom of the middle stator (501).

4. The structure for fixing the stator in the housing according to claim 3, characterized in that: The third boss (506) and the platform (505) are fixedly connected to the inside of the middle stator (501) in a symmetrical manner, and the platform (505) is connected to the first boss (303) in a matched manner.

5. The structure for fixing the stator in the housing according to claim 4, characterized in that: The second groove (504) is provided on the third boss (506), the grounding sheet (306) is sleeved in the second groove (504), and the third boss (506) is connected to the shell groove (301) in a matched manner.

6. The structure for fixing the stator in the housing according to claim 5, characterized in that: The R slot (507) is provided in the second groove (504), and the rib (304) is sleeved in the R slot (507).

7. The structure for fixing the stator in the housing according to claim 3, characterized in that: The upper insulating sleeve (502) is tightly fixed to the top of the fixed ring (6), and the fixed ring (6) is tightly fixed to the top of the rotor sleeve (2).

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