Double-arm bridge support structure and shaded pole motor

Abstract

The utility model discloses a double-arm bridge support structure, and discloses a shaded pole motor with the double-arm bridge support structure, and the double-arm bridge support structure comprises a support which is provided with a containing cavity in the middle; the middle of the gland is provided with a limiting cavity, the limiting cavity and the containing cavity form a bearing installation space, the two ends of the gland are provided with a first clamping part and a second clamping part respectively, the first clamping part is clamped to one end of the support, and the second clamping part is clamped to the other end of the support. The structure stability can be improved, the assembly process is simplified, and fixed installation of the bearing is optimized.

Description

Technical Field

[0001] This utility model relates to the field of mechanical support structure technology, and in particular to a double-arm bridge support structure and a shaded-pole motor. Background Technology

[0002] In modern industry and household appliances, electric motors are widely used as an important power source. To ensure efficient operation and long lifespan, the design of the internal support structure of the motor is crucial. This is especially true for shaded-pole motors, whose internal bearings and other critical components require a stable and reliable bracket for fixation and support.

[0003] Most existing bearing caps use a four-point riveting structure. While this structure is simple and easy to manufacture, the limited space for riveting makes it difficult to adjust the bearing's restoring torque after riveting. Due to space constraints, it's difficult to precisely control the pressure at each riveting point, leading to unstable bearing restoring torque and failing to meet high-precision requirements. Furthermore, regarding the bearing housing, most oil-impregnated bearing supports used in low-power motors on the market currently employ a spherical structure. Although this structure has a larger contact surface, in support structures requiring lower restoring torque, it's crucial to ensure a perfect fit between the support's bearing housing spherical surface and the bearing's spherical surface, with consistent smoothness, to guarantee that the restoring torque of the riveted support is essentially the same in different directions. Even slight inconsistencies can result in significant differences in the restoring torque of the riveted support in different directions, severely impacting the motor's performance and reliability. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a double-arm bridge support structure, which can improve structural stability, simplify the assembly process, and optimize the fixing and installation of bearings.

[0005] This utility model also proposes a shaded pole motor having the above-mentioned double-arm bridge support structure.

[0006] A double-arm bridge support structure according to a first aspect embodiment of the present invention includes:

[0007] The support has a receiving cavity in the middle;

[0008] The pressure cap has a limiting cavity in the middle, and the limiting cavity and the receiving cavity form a bearing installation space. The two ends of the pressure cap are respectively provided with a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part snaps into one end of the bracket, and the second snap-fit ​​part snaps into the other end of the bracket.

[0009] According to an embodiment of this utility model, a double-arm bridge support structure has at least the following beneficial effects: By providing a first locking part and a second locking part at both ends of the support, the cover can be firmly fixed to the support, effectively enhancing the stability and rigidity of the entire structure. This helps to reduce vibration and deformation under high speed or high load conditions, and improve the operating stability of the motor; the bearing installation space formed by the limiting cavity and the receiving cavity provides good positioning and support for the bearing. This design ensures the accurate position of the bearing after installation, reduces unnecessary movement and wear, and extends the service life of the bearing; by adopting a two-point connection structure, a large gap can be formed between the cover and the support. This design not only reduces the friction between the cover and the support, but also ensures that the restoring torque in all directions is basically equal under a small restoring torque. More importantly, the restoring torque after riveting can be easily adjusted simply by adjusting the bending degree of the cover, meeting the high precision requirements of different customers for the restoring torque.

[0010] According to some embodiments of this utility model, one end of the bracket is provided with a first latching part, and the other end of the bracket is provided with a second latching part. The first latching part is adapted to the first latching part, and the second latching part is adapted to the second latching part. The pressure cap is latched and installed on the bracket. This two-point connection structure allows for a larger gap between the pressure cap and the bracket, ensuring a smaller restoring torque on the bracket and that the restoring torque is essentially equal in all directions.

[0011] According to some embodiments of this utility model, the distance A between the plane where the bottom of the first buckle part is located and the plane where the receiving cavity is located satisfies 3.6mm≤A≤4mm. This ensures the secure installation of the pressure cap while reducing unnecessary stress concentration and preventing structural failure or assembly difficulties caused by excessively small or large distances.

[0012] According to some embodiments of this utility model, the middle portion of the pressure cap extends toward the receiving cavity, while both ends of the pressure cap extend away from the receiving cavity. This makes the connection between the pressure cap and the bracket more flexible; the restoring torque after riveting can be easily adjusted simply by adjusting the bending degree of the pressure cap, meeting the high-precision requirements of different customers for the restoring torque.

[0013] According to some embodiments of this utility model, the distance B between the plane of the pressure cap and the plane of the receiving cavity satisfies 2.3mm≤B≤2.5mm. This ensures the fit between the pressure cap and the bracket, enhances the stability and rigidity of the overall structure, helps reduce vibration and deformation under high speed or high load conditions, and improves the operating stability of the motor.

[0014] According to some embodiments of this utility model, the first and second snap-fit ​​portions are open at the top and bottom, respectively. This makes the snap-fit ​​process between the cap and the bracket simpler and faster, reduces alignment difficulties during installation, improves assembly efficiency, and lowers the risk of assembly errors. After installation, it can be better locked onto the buckle of the bracket, preventing loosening and detachment.

[0015] According to some embodiments of this utility model, threaded connection holes are provided at both ends of the bracket, which are suitable for fixing the bracket to other components. The standard design of the threaded connection holes makes the bracket compatible with other standard components, easy to procure and replace, improves the bracket's versatility and interchangeability, and reduces production costs and inventory management complexity.

[0016] According to some embodiments of this utility model, the cross-section of the bearing mounting space is cup-shaped. The cup-shaped design makes the bearing more evenly stressed after installation, which helps to precisely control the bearing's restoring torque. Under a smaller restoring torque, the restoring torque in all directions is essentially equal, ensuring uniform motor operation and high-precision control.

[0017] According to some embodiments of this utility model, the wall of the receiving cavity is arched towards the centerline of the receiving cavity, and the bearing partially contacts the wall of the receiving cavity. The arched wall design provides better support and fixation, and the bearing is subjected to more even force after installation, which helps to accurately control the bearing's restoring torque.

[0018] The shaded-pole motor according to a second aspect of the present invention includes the double-arm bridge support structure of the first aspect embodiment.

[0019] The outdoor unit of the air conditioner according to the embodiment of this utility model has at least the following beneficial effects: the use of the double-arm bridge bracket structure enhances the stability and rigidity of the internal support structure of the motor. The shaded pole motor with the double-arm bridge bracket structure has significant advantages in improving stability, optimizing bearing installation, reducing friction and noise, improving installation and maintenance convenience, accurately controlling the restoring torque, enhancing overall reliability, and optimizing space utilization, thus significantly improving the performance and service life of the motor.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 This is a schematic diagram of a double-arm bridge support structure according to an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the pressure cap according to an embodiment of the present utility model;

[0024] Figure 3 This is a cross-sectional schematic diagram of a double-arm bridge support structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of a shaded-pole motor according to a second aspect embodiment of the present invention.

[0026] Reference numerals: bracket 100; bearing 110; pressure cap 120; threaded connection hole 130; limiting cavity 140; first snap-fit ​​part 150; second snap-fit ​​part 160; first latching part 170; second latching part 180; wall surface 190. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] Reference Figures 1 to 4 A double-arm bridge support structure, comprising:

[0032] The support 100 has a receiving cavity in the middle;

[0033] The pressure cap 120 has a limiting cavity 140 in the middle. The limiting cavity 140 and the receiving cavity form the installation space for the bearing 110. The two ends of the pressure cap 120 are respectively provided with a first snap-fit ​​part 150 and a second snap-fit ​​part 160. The first snap-fit ​​part 150 snaps into one end of the bracket 100, and the second snap-fit ​​part 160 snaps into the other end of the bracket 100.

[0034] By providing a first locking portion 150 and a second locking portion 160 at both ends of the bracket 100, the gland 120 can be firmly fixed to the bracket 100, effectively enhancing the stability and rigidity of the entire structure. This helps reduce vibration and deformation under high speed or high load conditions, improving the motor's operational stability. The bearing 110 mounting space formed by the limiting cavity 140 and the receiving cavity provides good positioning and support for the bearing 110. This design ensures the accurate positioning of the bearing 110 after installation, reducing unnecessary movement and wear, and extending the service life of the bearing 110. By adopting a two-point connection structure, a large gap can be formed between the gland 120 and the bracket 100. This design not only reduces friction between the gland 120 and the bracket 100 but also ensures that the restoring torque in all directions is basically equal under a small restoring torque. More importantly, the restoring torque after riveting can be easily adjusted simply by adjusting the bending degree of the gland 120, meeting the high-precision requirements of different customers for the restoring torque.

[0035] One end of the bracket 100 is provided with a first latching part 170, and the other end of the bracket 100 is provided with a second latching part 180. The first latching part 150 is adapted to the first latching part 170, and the second latching part 160 is adapted to the second latching part 180. The pressure cap 120 is snapped onto the bracket 100. This two-point connection structure allows for a large gap between the pressure cap 120 and the bracket 100, ensuring that the restoring torque of the bracket 100 is small and approximately equal in all directions.

[0036] The distance A between the plane of the bottom of the first snap-fit ​​part 170 and the plane of the receiving cavity satisfies 3.6mm≤A≤4mm. This ensures the secure installation of the cover 120 while reducing unnecessary stress concentration and preventing structural failure or assembly difficulties caused by excessively small or large distances.

[0037] The middle part of the pressure cap 120 extends towards the receiving cavity, while both ends of the pressure cap 120 extend away from the receiving cavity. This makes the connection between the pressure cap 120 and the bracket 100 more flexible. By simply adjusting the bending degree of the pressure cap 120, the restoring torque after riveting can be easily adjusted, meeting the high-precision requirements of different customers for the restoring torque.

[0038] The distance B between the plane of the gland 120 and the plane of the receiving cavity satisfies 2.3mm≤B≤2.5mm. This ensures the fit between the gland 120 and the bracket 100, enhances the stability and rigidity of the overall structure, helps reduce vibration and deformation under high speed or high load conditions, and improves the operating stability of the motor.

[0039] The first snap-fit ​​portion 150 and the second snap-fit ​​portion 160 have an opening shape that is larger at the top and smaller at the bottom. The snap-fit ​​process between the pressure cap 120 and the bracket 100 is simpler and faster, reducing the difficulty of alignment during installation, improving assembly efficiency, and reducing the risk of assembly errors. After installation, it can be better locked onto the snap-fit ​​portion of the bracket 100 to prevent loosening and falling off.

[0040] The bracket 100 has threaded connection holes 130 at both ends, which are suitable for fixing the bracket 100 to other components. The standard design of the threaded connection holes 130 makes the bracket 100 compatible with other standard components, easy to purchase and replace, improves the versatility and interchangeability of the bracket 100, and reduces production costs and inventory management complexity.

[0041] The cross-section of the mounting space for bearing 110 is cup-shaped. The cup-shaped design makes the bearing 110 more evenly stressed after installation, which helps to accurately control the restoring torque of bearing 110. Under a small restoring torque, the restoring torque in all directions is basically equal, ensuring uniform operation and high-precision control of the motor.

[0042] Reference Figure 3 The wall 190 of the receiving cavity is arched towards the centerline of the receiving cavity, and the bearing 110 partially contacts the wall 190 of the receiving cavity. The arched wall 190 design provides better support and fixation, and the bearing 110 is subjected to more even force after installation, which helps to accurately control the restoring torque of the bearing 110.

[0043] In a first aspect embodiment, a specific design and assembly method for a double-arm bridge support structure is described. The support 100 can be made of aluminum alloy, which has good mechanical properties and corrosion resistance. A circular receiving cavity is provided in the middle of the support 100 to accommodate the bearing 110. One end of the support 100 is provided with a first latching portion 170, and the other end is provided with a second latching portion 180. The first latching portion 170 and the second latching portion 180 are rectangular protrusions with precision-machined surfaces to ensure a tight fit with the latching portion of the pressure cap 120.

[0044] A circular limiting cavity 140 is provided in the middle of the pressure cap 120. The limiting cavity 140 and the receiving cavity of the bracket 100 together form the mounting space for the bearing 110. A first snap-fit ​​portion 150 and a second snap-fit ​​portion 160 are respectively provided at both ends of the pressure cap 120. The first snap-fit ​​portion 150 and the second snap-fit ​​portion 160 are shaped like an opening that is larger at the top and smaller at the bottom, facilitating quick snap-fit ​​and disassembly. The middle part of the pressure cap 120 extends towards the receiving cavity, forming a protrusion to better secure the bearing 110. The two ends of the pressure cap 120 extend away from the receiving cavity, forming two wing-like structures to increase structural stability.

[0045] The distance A between the bottom plane of the first snap-fit ​​part 170 and the plane of the receiving cavity satisfies 3.6mm ≤ A ≤ 4mm. This design ensures optimal fit between the cover 120 and the bracket 100, improving structural stability and rigidity. The distance B between the plane of the cover 120 and the plane of the receiving cavity satisfies 2.3mm ≤ B ≤ 2.5mm. This design reduces friction between the cover 120 and the receiving cavity, improving the installation accuracy and operational stability of the bearing 110. Sufficient space is reserved between the snap-fit ​​part and the receiving cavity, and also between the cover 120 and the receiving cavity, to accommodate bearings 110 of different models and sizes. By adjusting the bending degree of the cover 120, the restoring torque after riveting can be easily adjusted to meet the needs of different application scenarios.

[0046] The bearing 110 mounting space has a cup-shaped cross-section, and the arched cavity wall 190 allows the bearing 110 to partially contact the cavity wall 190. This design reduces the contact area between the bearing 110 and the bracket 100, reducing friction and noise, and extending the service life of the bearing 110. The cavity wall 190 is precision-machined and surface-treated to ensure a smooth surface, further reducing friction and wear.

[0047] During installation, prepare the bracket 100 and the pressure cap 120, ensuring all components are undamaged and undeformed. Place the bearing 110 into the receiving cavity of the bracket 100, ensuring the bearing 110 is accurately positioned and partially in contact with the cavity wall 190. Align the center of the pressure cap 120 with the receiving cavity of the bracket 100, aligning the limiting cavity 140 with the receiving cavity to create a space for the bearing 110. Attach the first snap-fit ​​portion 150 and the second snap-fit ​​portion 160 of the pressure cap 120 to the first snap-fit ​​portion 170 and the second snap-fit ​​portion 180 of the bracket 100, respectively, ensuring the pressure cap 120 is securely fixed to the bracket 100. Check that the pressure cap 120 is securely fixed, ensuring there is no looseness or misalignment. Check that the bearing 110 is installed correctly, ensuring its accurate position within the receiving cavity.

[0048] According to a second aspect embodiment of the present invention, the shaded-pole motor includes the double-arm bridge support structure of the first aspect embodiment. The use of the double-arm bridge support structure enhances the stability and rigidity of the motor's internal support structure. Shaded-pole motors employing this structure offer significant advantages in improving stability, optimizing bearing installation, reducing friction and noise, improving installation and maintenance convenience, precisely controlling restoring torque, enhancing overall reliability, and optimizing space utilization, thereby significantly improving motor performance and service life.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A double-arm bridge support structure, characterized in that, include: The support has a receiving cavity in the middle; The pressure cap has a limiting cavity in the middle, and the limiting cavity and the receiving cavity form a bearing installation space. The two ends of the pressure cap are respectively provided with a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part snaps into one end of the bracket, and the second snap-fit ​​part snaps into the other end of the bracket.

2. The double-arm bridge support structure according to claim 1, characterized in that, One end of the bracket is provided with a first latching part, and the other end of the bracket is provided with a second latching part. The first latching part is adapted to the first latching part, and the second latching part is adapted to the second latching part. The pressure cap is latched and installed on the bracket.

3. The double-arm bridge support structure according to claim 2, characterized in that, The distance A between the plane where the bottom of the first latching part is located and the plane where the receiving cavity is located satisfies 3.6mm≤A≤4mm.

4. The double-arm bridge support structure according to claim 1, characterized in that, The middle portion of the pressure cap extends toward the receiving cavity, and the two ends of the pressure cap extend away from the receiving cavity.

5. A double-arm bridge support structure according to claim 1 or 4, characterized in that, The distance B between the plane of the pressure cap and the plane of the receiving cavity satisfies 2.3mm≤B≤2.5mm.

6. A double-arm bridge support structure according to claim 1, characterized in that, The first and second snap-fit ​​portions are open at the top and at the bottom, respectively.

7. A double-arm bridge support structure according to claim 1, characterized in that, The bracket has threaded connection holes at both ends, which are suitable for fixing the bracket to other components.

8. A double-arm bridge support structure according to claim 1, characterized in that, The bearing mounting space has a cup-shaped cross-section.

9. A double-arm bridge support structure according to claim 1, characterized in that, The wall of the receiving cavity is arched towards the centerline of the receiving cavity, and the bearing is in contact with the wall of the receiving cavity.

10. A shaded-pole motor, characterized in that, Includes a double-arm bridge support structure as described in any one of claims 1 to 9.

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