A motor fan cover connection structure

Abstract

This utility model discloses a motor fan cover connection structure, belonging to the field of motor component installation. This application includes a first component and a second component. The first component provides axial fastening force while allowing for fan cover position adjustment. The second component provides radial fastening force, compensating for the insufficient radial fastening force of the first component and accommodating assembly errors caused by fan cover position adjustments. The combined use of the first and second components ensures sufficient radial and axial fastening force for the installation of the fan cover and the motor base, simplifies the connection structure, reduces the difficulty of position adjustment during fan cover assembly, and improves assembly operability.

Description

Technical Field

[0001] This application relates to the field of motor component installation, and in particular to a connection structure between the external fan cover of a motor and the base. Background Technology

[0002] The external fan of the IC611 motor is independently installed on the outside of the non-drive end of the motor. The fan is placed inside an independent fan cover and fixed to the motor housing by a bracket. Since the external fan cover needs to be connected not only to the motor base but also to the motor cooler, a certain amount of adjustment space is required during installation. This needs to take into account the cumulative machining tolerances of the motor base, cooler, and fan cover, while ensuring the reliability of the connection to guarantee heat dissipation efficiency, mechanical sealing, and operational stability.

[0003] In existing technologies, the fan cover is connected to the base using a single bolt connection, which prevents spatial adjustment of the fan cover. Alternatively, threaded holes are pre-drilled on the outer wall of the base, and the bolt holes at the fan cover connection are enlarged to accommodate adjustment. While this method allows for fan cover position adjustment, it cannot guarantee radial stability. Existing technologies also include adding locating pins, but this hinders disassembly during motor maintenance. Another approach is to drill threaded holes during installation, but improper cleaning of drill residue can pose a hazard to normal motor operation, and this machining step affects motor installation efficiency and increases manufacturing costs.

[0004] Therefore, it is necessary to develop a new type of motor fan cover connection structure to solve the problems of interference when connecting the fan cover with other components such as the base and cooler, which leads to installation difficulties; the cumbersome position adjustment operation during the fan cover installation process, which makes it impossible to make precise adjustments; and the inability to balance the adjustability of the fan cover and the reliability of the connection. Utility Model Content

[0005] This utility model proposes a motor fan cover connection structure, which solves the problems of the inability to adjust the fan cover in space or the cumbersome operation of adjusting the space, solves the problem of interference between the fan cover, the base, and the cooler when they are connected, which leads to installation difficulties, and solves the problem of not being able to balance space adjustability and connection reliability.

[0006] The core technical solution of this utility model is as follows: the first component is composed of the first through hole, the first threaded hole and the first connecting component, and the second component is composed of the second through hole, the second threaded hole and the second connecting component. The two components are used together to make the position of the wind cover adjustable during installation and to ensure sufficient axial and radial fastening forces.

[0007] The specific technical solution of this application is as follows:

[0008] A motor fan cover connection structure, wherein the fan cover is mounted on the motor base.

[0009] The wind shield includes a first end face, and the first end face has a first through hole and a second through hole.

[0010] The base includes a second end face, and the second end face has a first threaded hole and a second threaded hole corresponding to the first through hole and the second through hole.

[0011] It also includes a first connecting component and a second connecting component.

[0012] The first through hole, the first threaded hole, and the first connecting assembly constitute the first component.

[0013] The second through hole, the second threaded hole, and the second connecting assembly constitute the second component.

[0014] The motor fan cover connection structure includes several first components and second components.

[0015] Furthermore, the first connecting component includes a limiting member, which is installed in the first through hole and abuts against the wall of the first through hole and the second end face, respectively.

[0016] Furthermore, the limiting member has a bolt through hole, which is an oblong hole.

[0017] Furthermore, the limiting member can rotate relative to the first through hole to adjust the direction of the waist-shaped hole.

[0018] Furthermore, the first connecting assembly includes an internal hexagon screw and a toothed saddle-shaped locking washer, wherein the internal hexagon screw passes through the toothed saddle-shaped locking washer, the limiting member, and is connected to the first threaded hole.

[0019] Furthermore, the second connecting component includes a hexagonal bolt, which is clearance-fitted with the second through hole, allowing the position of the shroud to be adjusted within a certain range during installation.

[0020] Furthermore, the second connecting component includes a large washer, the diameter of which is larger than the diameter of the second through hole.

[0021] Furthermore, the second connecting assembly includes a toothed saddle-shaped locking washer, and the hexagonal bolt passes through the toothed saddle-shaped locking washer, the large washer, the second through hole, and the second threaded hole for connection.

[0022] This utility model has the following technical effects: By setting the second component, while providing axial fastening force, it enables the position adjustment of the fan cover within a large range during installation, improving the compatibility of the fan cover installation with other motor components and reducing interference; by setting the first component, it provides radial fastening force, compensating for the insufficient radial fastening force of the second component, while the setting of the waist-shaped hole in the limiting component, and the adjustable direction of the waist-shaped hole, accommodate the assembly errors caused by the position adjustment of the fan cover; the combined use of the first and second components simplifies the installation steps of the fan cover, improves operability, and has a wide range of applications. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the mounting end face in one embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of the first component in one embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional view of the second component in one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Base; 2. Fan cover; 3. Limiting component; 4. Toothed saddle-shaped locking washer; 5. Socket head screw; 6. Large washer; 7. Hex bolt. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "multiple" means two or more.

[0030] like Figures 1 to 3As shown, a motor fan cover 2 connection structure is provided. The fan cover 2 is installed on the motor base 1. The fan cover 2 includes a first end face with a first through hole and a second through hole. The base 1 includes a second end face with a first threaded hole and a second threaded hole corresponding to the first through hole and the second through hole. It also includes a first connecting component and a second connecting component. The first through hole, the first threaded hole and the first connecting component constitute a first component. The second through hole, the second threaded hole and the second connecting component constitute a second component. The motor fan cover 2 connection structure includes a plurality of first components and second components.

[0031] In this embodiment, the fan cover 2 is mounted on the motor base 1. During assembly, the first end face of the fan cover 2 and the second end face of the base 1 are fitted together. The first end face of the fan cover 2 has a first through hole, and the second end face of the base 1 has a first threaded hole corresponding to the first through hole. A first connecting component assembly connects the first through hole and the first threaded hole in series, connecting the fan cover 2 to the base 1. The component consisting of the first through hole, the first threaded hole, and the first connecting component is the first component. The first end face of the fan cover 2 has a second through hole, and the second end face of the base 1 has a second threaded hole corresponding to the second through hole. A second connecting component assembly connects the second through hole and the second threaded hole in series, further connecting the fan cover 2 to the base 1. The component consisting of the second through hole, the second threaded hole, and the second connecting component is the second component. Depending on actual needs, multiple sets of the first and second components can be arranged, giving the fan cover 2 and the base 1 multiple mounting points and improving installation stability.

[0032] like Figure 2 The first connecting assembly includes a limiting member 3, an internal hexagon screw 5, and a toothed saddle-shaped locking washer 4. The limiting member 3 is installed in the first through hole and abuts against the wall of the first through hole and the second end face. The limiting member 3 has a bolt through hole. In one embodiment, the bolt through hole is an oblong hole. The limiting member 3 can rotate relative to the first through hole to adjust the direction of the oblong hole. The internal hexagon screw 5 passes through the toothed saddle-shaped locking washer 4 and the limiting member 3 and connects to the first threaded hole.

[0033] The thickness of the limiting member 3 is less than the thickness of the first end face so that the limiting member 3 can be completely embedded in the first through hole. In one embodiment, the thickness of the limiting member 3 can be set to half the thickness of the first end face. The limiting member 3 abuts against the wall of the first through hole and the second end face respectively to realize the transmission of force. After the internal hexagon screw 5 passes through the toothed saddle-shaped locking washer 4 and the limiting member 3 is connected to the first threaded hole, an axial fastening force is generated to fix the limiting member 3 to the second end face of the base 1. On the other hand, the limiting member 3 provides a radial fastening force to the fan cover 2. In order to achieve a better connection effect, the toothed saddle-shaped locking washer 4 is placed between the limiting member 3 and the internal hexagon screw 5.

[0034] like Figure 3The second connecting component includes a hexagonal bolt 7, a large washer 6, and a toothed saddle-shaped locking washer 4. The hexagonal bolt 7 passes through the toothed saddle-shaped locking washer 4, the large washer 6, the second through hole, and the second threaded hole for connection. The hexagonal bolt 7 is clearance-fitted with the second through hole, which allows for adjustment within a certain space range during the installation of the shroud 2. The diameter of the large washer 6 is larger than the diameter of the second through hole.

[0035] To allow for a wider range of position adjustments during installation, the diameter of the second through hole is larger than that of the hexagonal bolt 7, creating a gap between the second through hole and the hexagonal bolt 7. This gap allows the first end face of the fan shroud 2 to be adjusted within its range. To ensure a better connection between the hexagonal bolt 7 and the second threaded hole, a large washer 6 is used, with a diameter larger than that of the second through hole. For even better connection, a toothed saddle-shaped locking washer 4 is placed between the large washer 6 and the hexagonal bolt 7. This provides axial tightening force for the connection between the fan shroud 2 and the base 1, while the gap allows for a wider range of position adjustments for the fan shroud 2.

[0036] In practical applications, taking the IC611 motor as an example, the fan shroud 2 of the external fan needs to be connected not only to the motor base 1 but also to the motor cooler, requiring a certain amount of adjustment space during installation. By setting a second component, the hexagonal bolt 7 passes through the toothed saddle-shaped locking washer 4, the large washer 6, the second through hole, and the second threaded hole. Since there is a gap between the second through hole and the hexagonal bolt 7, the position of the fan shroud 2 can be adjusted to accommodate the fit between the fan shroud 2 and the base 1, the cooler, and other components. By setting a first component, the internal hexagonal screw 5 passes through the toothed saddle-shaped locking washer 4, the waist-shaped hole of the limiting member 3, and the first threaded hole. The connection structure of this embodiment is simple, compact, and reliable, enabling the fan shroud 2 to maintain a constant relative position with the base 1 and the cooler while ensuring a sealed connection with the cooler during motor operation, thus guaranteeing the overall ventilation efficiency of the motor. No additional equipment is required to achieve safe and trouble-free motor operation.

[0037] The connection structure of the motor fan cover 2 provided in this application has the following specific connection method: Figure 1As shown, the second component connection is performed first. The hex bolt 7 is passed through the toothed saddle-shaped locking washer 4, the large washer 6, the second through hole, and the second threaded hole. Since there is a gap between the second through hole and the hex bolt 7, the position of the fan shroud 2 can be adjusted to accommodate the fit between the fan shroud 2 and components such as the base 1 and the cooler. After the fan shroud 2 is adjusted to the correct position, the hex bolt 7 is tightened, completing the second component connection. The axial tightening force generated by the second component secures the fan shroud 2 to the base 1. However, due to the gap, the radial tightening force between the fan shroud 2 and the base 1 is insufficient. Furthermore, the adjustment of the fan shroud 2's position causes assembly errors, affecting other assembly relationships. The first component connection is then performed. The limiting member 3 is first installed into the first through hole. The internal hex bolt 5 passes through the toothed saddle-shaped locking washer 4, the oblong hole of the limiting member 3, and connects to the first threaded hole. Based on the actual assembly deviation, the limiting member 3 is rotated to adjust the direction of the oblong hole until the internal hex bolt 5 can connect to the first threaded hole. To make the connection between the motor and the fan cover 2 more secure, multiple sets of first and second components can be arranged according to actual needs. Through this combination of first and second components, the position of the fan cover 2 can be adjusted during installation, while ensuring sufficient radial and axial fastening forces.

[0038] In the embodiments disclosed in this application, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0039] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A motor fan cover connection structure, wherein the fan cover is mounted on the motor base, characterized in that, The wind shield includes a first end face, and the first end face has a first through hole and a second through hole. The base includes a second end face, and the second end face has a first threaded hole and a second threaded hole corresponding to the first through hole and the second through hole. It also includes a first connecting component and a second connecting component. The first through hole, the first threaded hole, and the first connecting assembly constitute the first component. The second through hole, the second threaded hole, and the second connecting assembly constitute the second component. The motor fan cover connection structure includes several first components and second components.

2. The motor fan cover connection structure according to claim 1, characterized in that, The first connecting component includes a limiting member, which is installed in the first through hole and abuts against the wall of the first through hole and the second end face, respectively.

3. The motor fan cover connection structure according to claim 2, characterized in that, The limiting component has a bolt through hole, which is an oblong hole.

4. The motor fan cover connection structure according to claim 3, characterized in that, The limiting member can rotate relative to the first through hole to adjust the direction of the waist-shaped hole.

5. The motor fan cover connection structure according to claim 4, characterized in that, The first connecting assembly includes an internal hexagon screw and a toothed saddle-shaped locking washer. The internal hexagon screw passes through the toothed saddle-shaped locking washer, the limiting member, and is connected to the first threaded hole.

6. The motor fan cover connection structure according to claim 1, characterized in that, The second connecting component includes a hexagonal bolt, which is clearance-fitted with the second through hole, allowing the position of the shroud to be adjusted within a certain range during installation.

7. The motor fan cover connection structure according to claim 6, characterized in that, The second connecting component includes a large washer, the diameter of which is larger than the diameter of the second through hole.

8. The motor fan cover connection structure according to claim 7, characterized in that, The second connecting assembly includes a toothed saddle-shaped locking washer, and the hex bolt passes through the toothed saddle-shaped locking washer, the large washer, the second through hole, and the second threaded hole for connection.

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