Motor stator and rotor assembling device

Abstract

The utility model discloses a motor stator and rotor assembling device, which is used for assembling a rotor assembly and a stator assembly and comprises a base, and a stator assembly positioning piece and a plurality of rotor assembly guide rods are fixedly mounted on the base. The stator assembly positioning piece is located in the middle of the base, and the multiple rotor assembly guide rods are arranged on the outer side of the stator assembly positioning piece; along the extension direction of the rotor assembly guide rod, the free end of the rotor assembly guide rod is arranged to exceed the stator assembly positioning piece, the rotor assembly guide rod is connected with a sliding support in a sliding manner, and the sliding support is used for fixing a rotor assembly. According to the motor stator and rotor combination device, a through hole through which the rotor assembly guide rod passes can be prevented from being formed in the motor shell, so that the sealing performance of the motor can be improved.

Description

Technical Field

[0001] The utility model relates to a device for motor assembly, in particular to a stator-rotor assembling device for motors. Background Art

[0002] During the motor assembly process, the assembly of the stator and the rotor is a technological difficulty. Since the rotor is extremely likely to be adsorbed onto the stator and its position is displaced during the process of entering the stator, a stator-rotor assembling device is needed to fix the relative positions of the rotor and the stator, ensure the concentricity of the assembly of the rotor and the stator, and avoid the failure of the stator-rotor assembly.

[0003] CN202127339U discloses a device for assembling a permanent magnet motor stator and rotor. The piston rod of a cylinder drives a rotor positioning and guiding disc to move up and down to realize the assembly of the permanent magnet motor stator and rotor. This assembling method of guiding the rotor to be assembled into the stator through a guide rod penetrating the stator is a commonly adopted method for stator-rotor assembly at present. Since this type of method requires a through hole for the guide rod to pass through on the motor housing, the overall sealing performance of the motor will be reduced. Summary of the Utility Model

[0004] Purpose of the utility model: The purpose of the utility model is to provide a stator-rotor assembling device for motors that can improve the sealing performance of the motor after assembly.

[0005] The stator-rotor assembling device for motors described in the utility model is used for assembling a rotor assembly and a stator assembly, and includes a base. A stator assembly positioning member and a plurality of rotor assembly guide rods are fixedly installed on the base. The stator assembly positioning member is located in the middle of the base, and the plurality of rotor assembly guide rods are arranged outside the stator assembly positioning member. Along the extending direction of the rotor assembly guide rods, the free ends of the rotor assembly guide rods extend beyond the stator assembly positioning member, and a sliding bracket is slidably connected to the rotor assembly guide rods. The sliding bracket is used to fix the rotor assembly.

[0006] The stator assembly positioning member can provide positioning for the stator assembly, and the rotor assembly guide rods and the sliding bracket provide positioning and guiding for the rotor assembly. Since the rotor assembly guide rods are arranged outside the stator assembly positioning member, this non-coaxial arrangement can avoid opening a through hole on the motor housing for the rotor assembly guide rods to pass through, thereby improving the sealing performance of the motor.

[0007] In some embodiments, the rotor assembly guide rods are arranged in two, and the two rotor assembly guide rods are used to limit the rotor assembly in the direction of the connection line of the two rotor assembly guide rods.

[0008] Preferably, three rotor assembly guide rods are provided, and the mounting points of the three rotor assembly guide rods on the base are not on the same straight line, so as to realize the positioning of the rotor assembly in the plane parallel to the base. The mounting points of the three rotor assembly guide rods on the base are not on the same straight line, which can avoid over-positioning of the rotor assembly.

[0009] In some embodiments, six rotor assembly guide rods are provided, three in a group, and the two groups of rotor assembly guide rods respectively realize the positioning and guiding of the two rotor assemblies, so as to improve the efficiency of stator-rotor assembly.

[0010] The stator assembly positioning member includes three positioning pins, and the mounting points of the three positioning pins on the base are not on the same straight line. The positioning pins are used to cooperate with the positioning grooves on the motor housing to realize the positioning of the stator assembly in the plane parallel to the base.

[0011] A shoulder is provided at the free end of the positioning pin. The shoulder enables the positioning pin to provide positioning for the stator assembly in the direction perpendicular to the base, ensuring the levelness of the stator assembly placed on the motor stator-rotor assembly device, thereby ensuring the coaxiality of the stator and the rotor during the entire stator-rotor assembly process and reducing the risk of stator-rotor assembly failure.

[0012] The stator assembly positioning member is a positioning seat with a cavity, and the cavity is used to cooperate with the housing of the motor to realize the positioning of the stator assembly. Positioning the stator assembly through the cavity further avoids opening positioning holes on the motor housing, thereby enhancing the sealing performance of the motor.

[0013] The sliding bracket includes a main body portion and a plurality of moving portions extending outward from the main body portion. The main body portion is used to connect the rotor assembly, and the moving portions are in one-to-one correspondence with the rotor assembly guide rods and are slidably connected. Optionally, the moving portions and the rotor assembly guide rods are slidably connected through rolled bushings.

[0014] Beneficial effects: Compared with the prior art, a plurality of rotor assembly guide rods of the present utility model are arranged outside the stator assembly positioning member. The rotor assembly is connected to the sliding bracket, and the sliding bracket is slidably connected to the rotor assembly guide rods, thereby realizing the positioning and installation guiding of the rotor assembly, avoiding opening through holes on the motor housing for the rotor assembly guide rods to pass through, and ensuring the sealing performance of the motor. Description of the Drawings

[0015] Figure 1 is a cross-sectional view of the present utility model;

[0016] Figure 2 is a top view of the present utility model.

[0017] Description of the reference numerals: 1, base; 2, stator assembly positioning member; 3, rotor assembly guide rod; 4, sliding bracket; 41, main body portion; 42, moving portion; 5, housing; 6, stator; 7, rotor assembly; 71, rotor; 72, bearing; 73, fixed bracket; 8, positioning groove; 9, bearing mounting groove. Detailed implementation manners

[0018] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0019] Embodiment 1: As Figure 1 and Figure 2 shown, the motor stator-rotor assembling device of the present utility model includes a base 1, a stator assembly positioning member 2, a rotor assembly guide rod 3 and a sliding bracket 4. The stator assembly and the rotor assembly 7 are assembled in an up-and-down manner in this embodiment. The stator assembly positioning member 2 and the rotor assembly guide rod 3 are fixed on the base 1. The stator assembly positioning member 2 can provide positioning for the stator assembly. The stator assembly positioning member 2 is a positioning pin with shoulders at the ends of three free ends. The positioning pin cooperates with the positioning groove 8 on the motor housing 5 to achieve the positioning of the stator assembly in the horizontal plane perpendicular to the height direction. The shoulder of the positioning pin provides vertical limit for the stator assembly. To avoid over-positioning, the installation points of the three positioning pins on the base 1 are not on the same straight line. The rotor assembly guide rod 3 is provided with three, and the three rotor assembly guide rods 3 are arranged around the periphery of the stator assembly positioning member 2 to provide horizontal positioning and vertical guiding for the rotor assembly 7. And to avoid over-positioning, the installation points of the three rotor assembly guide rods 3 on the base 1 are not on the same straight line. To facilitate the assembly of the rotor assembly 7 with the stator assembly from top to bottom, the height of the rotor assembly guide rod 3 is higher than that of the stator assembly positioning member 2, thus forming a guiding section. The sliding bracket 4 and the rotor assembly 7 are fixedly connected by screws. The sliding bracket 4 includes a main body portion 41 and three moving portions 42 extending outward from the main body portion 41. The main body portion 41 is used to connect the rotor assembly 7. The moving portions 42 correspond to the rotor assembly guide rods 3 one by one and are slidably connected. A rolled bushing is installed between the moving portion 42 and the rotor assembly guide rod 3 to enable the sliding connection between the sliding bracket 4 and the rotor assembly guide rod 3.

[0020] For the motor described in the present utility model, by using the above-mentioned motor stator-rotor assembling device, the motor includes a housing 5, a stator assembly press-fitted in the housing 5, and a rotor assembly 7 assembled with the stator assembly. A positioning groove 8 for cooperating with the stator assembly positioning member 2 is provided on the outer side of the housing 5. An inner side of the housing 5 is provided with a bearing mounting groove 9, and the stator 6 in the stator assembly and the bearing mounting groove 9 are coaxially arranged; the rotor assembly 7 includes a coaxially arranged rotor 71 and a bearing 72. After the rotor 71 is assembled with the stator 6, the bearing 72 is installed in the bearing mounting groove 9. The rotor assembly 7 includes a fixing bracket 73, and the fixing bracket 73 is used to connect the rotor assembly 7 to the sliding bracket 4 of the motor stator-rotor assembling device, and the connection between the fixing bracket 73 and the sliding bracket 4 is a detachable connection, so that after the bearing 72 of the rotor assembly 7 is fitted with the bearing mounting groove 9 of the housing 5, the connection between the sliding bracket 4 and the fixing bracket 73 can be loosened, so as to slide the sliding bracket 4 upward to perform the stator-rotor assembly of the next motor.

[0021] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the stator assembly and the rotor assembly 7 are assembled in a left-right manner. The rotor assembly guide rod 3 extends in the horizontal direction, and the rotor assembly guide rod 3 guides the sliding bracket 4 in the horizontal direction. The stator assembly positioning member 2 is a positioning seat with a cavity, and the shape of the cavity matches the outer shape of the motor housing, and the two cooperate with each other to achieve the positioning of the stator assembly.

[0022] In this application, the free end refers to the end that is not fixedly connected to other components. For example, the end of the rotor assembly guide rod 3 and the positioning pin fixedly connected to the base 1 is the fixed end, and the opposite end is the free end.

[0023] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A motor stator and rotor assembly device, used for assembling a rotor assembly (7) and a stator assembly, characterized in that: The invention comprises a base (1), on which a stator assembly positioning member (2) and a plurality of rotor assembly guide rods (3) are fixedly mounted; the stator assembly positioning member (2) is located in the middle of the base (1), and the plurality of rotor assembly guide rods (3) are arranged outside the stator assembly positioning member (2); along the extension direction of the rotor assembly guide rod (3), the free end of the rotor assembly guide rod (3) is arranged beyond the stator assembly positioning member (2), and a sliding bracket (4) is slidably connected to the rotor assembly guide rod (3), and the sliding bracket (4) is used to fix the rotor assembly (7).

2. The motor stator and rotor assembly device according to claim 1, characterized in that: The number of the rotor assembly guide rods (3) is three, and the installation points of the three rotor assembly guide rods (3) on the base (1) are not on the same straight line.

3. The motor stator and rotor assembly device according to claim 1, characterized in that: The stator assembly positioning member (2) comprises three positioning pins, and the installation points of the three positioning pins on the base (1) are not on the same straight line.

4. The motor stator and rotor assembly device according to claim 3, characterized in that: The free end of the positioning pin is provided with a shaft shoulder.

5. The motor stator and rotor assembly device according to claim 1, characterized in that: The stator assembly positioning piece (2) is a positioning seat having a cavity, and the cavity is used to cooperate with the housing (5) of the motor to achieve positioning of the stator assembly.

6. The motor stator and rotor assembly device according to claim 1, characterized in that: The sliding bracket (4) comprises a main body (41) and a plurality of movable parts (42) extending outward from the main body (41), wherein the main body (41) is used to connect the rotor assembly (7), and the movable parts (42) correspond to the rotor assembly guide rod (3) one by one and are slidably connected.

7. The motor stator and rotor assembly device according to claim 6, characterized in that: A rolled bushing is provided on the rotor assembly guide rod (3), and the moving part (42) cooperates with the rolled bushing to achieve a sliding connection with the rotor assembly guide rod (3).

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