A motor housing

Abstract

This utility model discloses a motor housing, relating to the field of motor technology. The key technical features are: a housing body with an annular block rotatably connected to one end; a mounting bracket on the annular block; a first fixing lug on one end of the housing body; and a second fixing lug on the outer periphery of the annular block. The second fixing lug is detachably connected to the first fixing lug via fixing bolts. By attaching the annular block to one end of the housing body and rotating the annular block to rotate the mounting bracket to the desired position, the first and second fixing lugs are fixed using fixing bolts, thus fixing the housing body to the annular block. By using the annular block, the junction box can be positioned in different locations without changing the components, simply by altering the relative installation angle of the annular block on the housing body. Compared to existing technologies that require changing tooling fixtures to alter the position of the wiring port on the motor housing, this design makes changing the position of the wiring port much more convenient.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a motor housing. Background Technology

[0002] The motor housing is the outer protective structure of the motor, usually made of metal. Some medium and large motors usually have a support base fixed on the housing to provide support for the installation of the motor. The motor housing usually has a wiring port for later installation of a junction box.

[0003] There are three main locations for the junction box on an electric motor: at the three, nine, and twelve o'clock positions on the rotor shaft, to accommodate the installation requirements of the motor in different scenarios. The junction box is usually formed by machining and milling after the motor housing is formed. When an order for an electric motor of the same specifications but requiring junction boxes in different positions is encountered, the production line needs to prepare multiple sets of tooling fixtures, which is quite inconvenient.

[0004] Therefore, a new solution is needed to address this problem. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a motor housing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a motor outer casing, including a casing body, an annular block rotatably connected to one end of the casing body, a mounting bracket for installing a junction box on the annular block, a fixing lug one at one end of the casing body, a fixing lug two on the outer peripheral wall of the annular block, and the fixing lug two being detachably connected to the fixing lug one by fixing bolts.

[0007] The present invention is further configured such that: an annular groove is provided on the end face of the cover body, and an annular protrusion is provided on the side wall of the annular block for embedding in the annular groove.

[0008] The present invention is further configured such that: an installation groove is provided on the end face of the annular protrusion facing away from the annular block, and a rubber ring is provided in the installation groove.

[0009] The present invention is further configured such that: a sealing strip is fixed on the annular block and disposed on the same side as the annular protrusion, and the diameter of the sealing strip is larger than the outer diameter of the annular protrusion.

[0010] The present invention is further configured such that the height of the annular protrusion is less than the depth of the annular groove.

[0011] The present invention is further configured such that: the second fixing ear is integrally formed with the annular block, and the annular block is made of stainless steel.

[0012] In summary, this utility model has the following beneficial effects:

[0013] When assembling the motor, after the stator is fixedly installed in the housing body, the junction box is fixedly installed on the mounting bracket. The annular block is attached to one end of the housing body, and the mounting bracket is rotated to the desired position by rotating the annular block. The wires on the stator are passed through the wire holes and stored in the junction box. At this time, the second fixing ear is aligned with the first fixing ear, and the first fixing ear and the second fixing ear are fixed with fixing bolts. This completes the fixing of the housing body and the annular block. By setting the annular block, the junction box can be set in different positions by changing the relative installation angle of the annular block on the housing body without changing the components. Compared with the prior art, which requires changing the tooling fixture to change the position of the wiring port on the motor housing, the above setting makes it more convenient to change the position of the wiring port. Attached Figure Description

[0014] Figure 1 This is a partial cross-sectional view of the present invention;

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0016] In the diagram: 1. Cover body; 2. Annular block; 3. Mounting bracket; 4. Fixing ear one; 5. Fixing ear two; 6. Fixing bolt; 7. Annular groove; 8. Annular protrusion; 9. Mounting groove; 10. Rubber ring; 11. Sealing strip. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] A type of motor housing, such as Figure 1 and Figure 2As shown, the device includes a housing body 1, on which a support frame is fixed. The support frame is used to contact a fixed surface such as the ground. An annular block 2 is rotatably connected to one end of the housing body 1. The annular block 2 is provided with a mounting bracket 3 for installing a junction box. A wire-passing hole is opened on the inner peripheral wall of the annular block 2 to pass through the mounting bracket 3. One end of the housing body 1 is provided with a first fixing ear 4, and the outer peripheral wall of the annular block 2 is provided with a second fixing ear 5. There are four fixing ears 4 and four fixing ears 5. The four fixing ears 4 are arranged in a circular array on the housing body 1, and the four fixing ears 5 are arranged in a new array on the annular block 2. The fixing ears 5 are detachably connected to the fixing ears 4 by fixing bolts 6. When assembling the motor, after the stator is fixedly installed in the housing body 1, the junction box is fixedly installed on the mounting bracket 3. The annular block 2 is then attached to one end of the housing body 1. The annular block 2 is rotated to rotate the mounting bracket 3 to the desired position, and the wires on the stator are then connected. After passing the wire through the hole and storing it in the junction box, align the second fixing ear 5 with the first fixing ear 4, and use the fixing bolt 6 to fix the first fixing ear 4 and the second fixing ear 5. This completes the fixing of the cover body 1 and the annular block 2. By setting the annular block 2, the junction box can be set in different positions without changing the components, by changing the relative installation angle of the annular block 2 on the cover body 1. Compared with the prior art, which requires changing the tooling fixture to change the position of the wiring port on the motor cover, the above setting makes it more convenient to change the position of the wiring port. The second fixing ear 5 and the annular block 2 are integrally formed. Specifically, the annular block 2 and the second fixing ear 5 are formed in one piece by casting a mold. This setting can effectively improve the connection strength between the second fixing ear 5 and the annular block 2. The annular block 2 is made of stainless steel. Stainless steel has excellent impact resistance, which can better ensure the service life of the annular block 2.

[0019] like Figure 2As shown, an annular groove 7 is provided on the end face of the cover body 1, and an annular protrusion 8 is provided on the side wall of the annular block 2 for embedding in the annular groove 7. When the annular block 2 is pre-installed onto the end face of the cover body 1, the annular protrusion 8 needs to be aligned with the annular groove 7 and embedded. The annular protrusion 8 embedded in the annular groove 7 can better ensure the concentricity of the cover body 1 and the annular block 2, which is convenient for subsequent alignment of the fixing ear 1 4 and fixing ear 2 5. An installation groove 9 is provided on the end face of the annular protrusion 8 facing away from the annular block 2. A rubber ring 10 is attached to the installation groove 9. When the fixing ear 1 4 and fixing ear 2 5 are fixed by the fixing bolt 6, one end of the rubber ring 10 is pressed against the inner wall of the annular groove 7. This setting allows the rubber ring 10 to deform to a certain extent due to the material characteristics when it is pressed against the inner wall of the annular groove 7, which can increase the contact area between the rubber ring 10 and the inner wall of the annular groove 7, reduce the gap between the rubber ring 10 and the inner wall of the annular groove 7, and improve the connection between the annular block 2 and the cover body 1. To ensure airtightness, the height of the annular protrusion 8 is less than the depth of the annular groove 7. This design ensures that when the annular protrusion 8 is embedded in the annular groove 7, the side wall of the annular protrusion 8 facing away from the annular block 2 will not come into contact with the inner wall of the annular groove 7. During the operation of the motor, a certain amount of vibration will be generated. The fact that the annular protrusion 8 does not come into contact with the inner wall of the annular groove 7 can avoid the possibility of damage to the annular protrusion 8 or the inner wall of the annular groove 7 due to collision. At the same time, due to the setting of the rubber ring 10, this vibration can be absorbed well, thereby improving the connection stability between the annular block 2 and the cover body 1. A sealing strip 11 is fixed on the annular block 2 and is set on the same side as the annular protrusion 8. The diameter of the sealing strip 11 is larger than the outer diameter of the annular protrusion 8. The sealing strip 11 is also made of rubber material. When the annular block 2 is fixed on the cover body 1, the sealing strip 11 is squeezed and deformed, so that the gap between the side wall of the annular block 2 and the cover body 1 is filled by the sealing strip 11, further improving the airtightness of the connection between the annular block 2 and the cover body 1.

[0020] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A motor housing, comprising a housing body (1), characterized in that: One end of the housing body (1) is rotatably connected to an annular block (2), and the annular block (2) is provided with a mounting bracket (3) for installing a junction box. One end of the housing body (1) is provided with a fixing ear (4), and the outer peripheral wall of the annular block (2) is provided with a fixing ear (5). The fixing ear (5) is detachably connected to the fixing ear (4) by a fixing bolt (6).

2. The motor housing according to claim 1, characterized in that: The end face of the cover body (1) is provided with an annular groove (7), and the side wall of the annular block (2) is provided with an annular protrusion (8) for embedding in the annular groove (7).

3. The motor housing according to claim 2, characterized in that: The annular protrusion (8) has an installation groove (9) on its end face facing away from the annular block (2), and a rubber ring (10) is provided in the installation groove (9).

4. The motor housing according to claim 2, characterized in that: A sealing strip (11) is fixed on the annular block (2) and is arranged on the same side as the annular protrusion (8). The diameter of the sealing strip (11) is larger than the outer diameter of the annular protrusion (8).

5. The motor housing according to claim 2, characterized in that: The height of the annular protrusion (8) is less than the depth of the annular groove (7).

6. The motor housing according to claim 1, characterized in that: The fixed ear (5) and the annular block (2) are integrally formed, and the annular block (2) is made of stainless steel.

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