A stable and firm hot-melt end assembly structure

Abstract

The present invention relates to the technical field of fan motor systems, and particularly relates to a stable and firm hot-melt end assembly structure, which includes a frame body. The frame body includes a columnar part. An outer stator core is sleeved outside the columnar part. A receiving seat is arranged on the inner wall of the columnar part. A bearing is arranged in the receiving seat. A pressure ring is annularly arranged on the top surface of the bearing. The columnar part includes a base part, a connecting part and a hot-melt part for fixing with the stator core and the pressure ring during hot melting, with the same inner diameter from bottom to top. The present invention adopts the design that the outer diameter of the hot-melt part is smaller than that of the connecting part, so that pre-positioning can be carried out during the installation structure, simplifying the assembly operation. The design of the first segmented groove can effectively disperse the pressure of the plastic during hot melting, improving the yield rate of the product. The pressure ring can improve the oil resistance performance and reduce the probability of damage to the bearing due to pressure during hot melting.

Description

Technical Field

[0001] The present invention relates to the technical field of fan motor systems, and particularly to a stable and firm hot-melt mouth-end assembly structure. Background Art

[0002] In the existing technical field of fan motor systems, the existing design is that the size of the hot-melt mouth-end is the same as the inner diameter of the stator core. In this way, pre-positioning cannot be carried out during the installation process, resulting in the installation process not being very convenient. At the same time, since the entire circumference of the mouth-end needs to be hot-melted, a relatively large downward pressure is required during hot-melting. Since the material of the bearing is usually copper-iron powder metallurgy, its strength is much lower than the downward pressure of the machine during hot-melting. The hot-melting device directly applies force to the bearing during hot-melting, making it easier to damage the product, thereby reducing the yield rate. Summary of the Invention

[0003] Aiming at the deficiencies existing in the prior art, the present invention provides a stable and firm hot-melt mouth-end assembly structure. The technical problem to be solved is how to improve the effect of fixing the stator by improving the hot-melt mouth-end assembly structure, prevent the stator from falling off, and thus improve the quality of the overall product.

[0004] To solve the above technical problem, the technical solution provided by the present invention is: a stable and firm hot-melt mouth-end assembly structure, including a frame body. The frame body includes a cylindrical part made of plastic and having a hollow cylindrical structure. An outer sleeve of the cylindrical part is provided with a stator core. A receiving seat is arranged on the inner wall of the cylindrical part. A bearing is arranged in the receiving seat. A pressure ring is annularly arranged on the top surface of the bearing. The cylindrical part includes a base part, a connecting part, and a hot-melting part for fixing with the stator core and the pressure ring during hot-melting from bottom to top. The inner diameter of the hot-melting part is larger than that of the connecting part. The outer edge of the pressure ring tightly abuts against the inner side wall of the hot-melting part. The bottom of the receiving seat is connected to the bottom surface of the base part, and the top surface of the receiving seat is connected to the bottom surface of the hot-melting part.

[0005] Further, the lower circumference of the hot-melting part tightly abuts against the connecting part, and the upper circumference of the hot-melting part is uniformly provided with first segmented grooves.

[0006] Further, an outer sleeve of the cylindrical part is provided with a stator core. The stator core includes magnetic conductive sheets and a plastic shell wrapped outside the magnetic conductive sheets. The inner wall of the magnetic conductive sheets is connected to the outer wall of the connecting part. The top circumference of the plastic shell is uniformly provided with second segmented grooves, and the second segmented grooves are close to the magnetic conductive sheets.

[0007] Further, the second segmented grooves are of a concave-convex structure.

[0008] Further, the outer diameter of the base part is larger than that of the connecting part and forms a connecting surface, and the bottom surface of the magnetic conductive sheets is connected to the connecting surface.

[0009] Further, a receiving portion is provided on the plastic housing, and the receiving portion is located above the magnetic conductive sheet.

[0010] Further, a rotating shaft is arranged inside the bearing. The rotating shaft is coaxial with the cylindrical portion, and the rotating shaft is drivingly connected with an impeller.

[0011] The beneficial effects brought by this technical solution are as follows: For a stable and firm hot-melt end assembly structure of the present invention, the design that the outer diameter of the hot-melt portion is smaller than the outer diameter of the connecting portion enables pre-positioning during the installation of the structure, simplifying the assembly operation. The design of the first segmented groove can effectively disperse the pressure of the plastic during hot melting, improving the yield rate of the product. A pressure ring is provided on the top surface of the bearing, which can improve the oil-blocking performance and reduce the probability of the bearing being damaged by pressure during hot melting. Its design with the receiving portion can also improve the fixing effect after hot melting. At the same time, since the cylindrical portion is made of plastic, the hot-melt portion at its top will deform and cause the stator to fall off, thereby pressing the place that needs to be hot-melted and pressed below it. Description of the Drawings

[0012] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0013] Figure 1 is an internal cross-sectional view of a stable and firm hot-melt end assembly structure of the present invention in an embodiment;

[0014] Figure 2 is a schematic structural diagram of a stable and firm hot-melt end assembly structure of the present invention in an embodiment;

[0015] Figure 3 is a schematic structural diagram of the cylindrical portion 2 of a stable and firm hot-melt end assembly structure of the present invention in an embodiment;

[0016] Figure 4 is a schematic structural diagram of the stator core 6 of a stable and firm hot-melt end assembly structure of the present invention in an embodiment;

[0017] In the figures: 1 - frame body, 2 - cylindrical portion, 21 - base portion, 22 - connecting portion, 23 - hot-melt portion, 3 - receiving seat, 4 - bearing, 5 - pressure ring, 6 - stator core, 61 - magnetic conductive sheet, 63 - plastic housing, 611 - second segmented groove, 231 - first segmented groove, 62 - receiving portion, 41 - rotating shaft, 42 - impeller. Detailed Embodiments

[0018] The following are descriptions of the preferred examples of the present invention with reference to the drawings. It should be understood that the preferred examples described herein are only for illustrating and explaining the present invention and are not used to limit the present invention.

[0019] As shown Figure 1 , 2 , 3, and 4, the present invention provides a stable and firm hot-melt end assembly structure, including a frame body 1. The frame body 1 includes a columnar portion 2 made of plastic and having a hollow cylindrical structure. A stator core 6 is sleeved outside the columnar portion 2. A receiving seat 3 is arranged on the inner wall of the columnar portion 2. A bearing 4 is arranged in the receiving seat 3. The core shaft of the rotor is inserted into the bearing 4. A pressure ring 5 is annularly arranged on the top surface of the bearing 4. The columnar portion 2 includes a base portion 21, a connecting portion 22, and a hot-melt portion 23 for fixing to the stator core 6 and the pressure ring 5 during hot melting from bottom to top. The inner diameter of the hot-melt portion 23 is larger than that of the connecting portion 22. The outer edge of the pressure ring 5 tightly abuts against the inner side wall of the hot-melt portion 23. The bottom of the receiving seat 3 is connected to the bottom surface of the base portion 21. The top surface of the receiving seat 3 is connected to the bottom surface of the hot-melt portion 23. During hot melting, the hot-melt portion 23 melts to fix the pressure ring 5 and the stator core to the bearing and the connecting portion, so as to prevent the hot-melt portion 23 at the top from deforming and causing the stator core to fall off during the hot-melting process because the columnar portion 2 is made of plastic, thereby pressing the place that needs to be hot-melted and pressed below it.

[0020] In this embodiment, the so-called top surface refers to the end facing the fan blade or the end facing the opening direction of the bearing.

[0021] In this embodiment, the lower circumference of the hot-melt portion 23 tightly abuts against the connecting portion 22. The upper circumference of the hot-melt portion 23 is uniformly provided with first segmented grooves 231. This design can effectively disperse the pressure of the plastic during hot melting, and only a small force is required to complete the hot-melt operation, so it is not easy to damage the product, improving the yield rate of the product.

[0022] In this embodiment, a stator core 6 is sleeved outside the columnar portion 2. The stator core 6 includes magnetic conductive sheets 61 and a plastic housing 63 wrapped outside the magnetic conductive sheets 61. The inner wall of the magnetic conductive sheets 61 is connected to the outer wall of the connecting portion 22. The upper circumference of the top surface of the plastic housing 63 is uniformly provided with second segmented grooves 611. The second segmented grooves 611 are close to the magnetic conductive sheets 61, which is beneficial for installation and positioning.

[0023] In this embodiment, the second segmented grooves 611 have a concave-convex structure, which can further improve the positioning effect during installation.

[0024] In this embodiment, the outer diameter of the base portion 21 is larger than that of the connecting portion 22 and a connecting surface 221 is formed. The bottom surface of the magnetic conductive sheet 61 is in contact with the connecting surface 221. At the same time, a receiving portion 62 is provided on the plastic housing 63. The receiving portion 62 is located above the magnetic conductive sheet 61. On the one hand, this can improve the stability of the stator core 6 during the hot melting process and it is not easy to shift. On the other hand, it can also provide a supporting surface after the hot melting portion 23 melts, further improving the fixing effect after hot melting.

[0025] In this embodiment, a rotating shaft 41 is arranged inside the bearing 4. The rotating shaft 41 is coaxial with the cylindrical portion 2. The rotating shaft 41 is drivingly connected with an impeller 42, thereby realizing the basic working structure of hot melting.

[0026] In summary, for a stable and firm hot melting port end assembly structure of the present invention, the inner diameter of the hot melting portion 23 is larger than that of the connecting portion 22, and the outer edge of the pressing ring 5 tightly abuts against the inner side wall of the hot melting portion 23, so that the pressing ring can be pre-positioned when installing the structure, simplifying the assembly operation. The design of the first segmented groove 231 can effectively disperse the pressure of the plastic during hot melting and improve the yield of the product. A pressing ring 5 is arranged on the top surface of the bearing 4, which can improve the oil resistance performance and reduce the probability of the bearing 4 being damaged by pressure during hot melting. The concave-convex design of it and the receiving portion 62 can also improve the fixing effect after hot melting. At the same time, since the cylindrical portion 2 is made of plastic, the hot melting portion 23 at its top will deform and cause the stator to fall off, thereby pressing the place that needs to be tightly pressed by hot melting below it.

[0027] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A stable and firm hot-melt end assembly structure, characterized in that: It includes a housing (1). The housing (1) comprises a cylindrical part (2) made of plastic and having a hollow cylindrical structure. A stator core (6) is sleeved outside the cylindrical part (2). A receiving seat (3) is arranged on the inner wall of the cylindrical part (2). A bearing (4) is arranged in the receiving seat (3). A pressure ring (5) is annularly arranged on the top surface of the bearing (4). The cylindrical part (2) includes a base part (21), a connecting part (22), and a hot-melt part (23) for fixing to the stator core (6) and the pressure ring (5) during hot melting from bottom to top. The inner diameter of the hot-melt part (23) is larger than the inner diameter of the connecting part (22), and the outer diameter of the hot-melt part (23) is smaller than the outer diameter of the connecting part (22). The outer edge of the pressure ring (5) tightly abuts against the inner side wall of the hot-melt part (23). The bottom of the receiving seat (3) is connected to the bottom surface of the base part (21), and the top surface of the receiving seat (3) is connected to the bottom surface of the hot-melt part (23).

2. The stable and firm hot melt end assembly structure according to claim 1, wherein: The lower circumference of the hot-melt part (23) tightly abuts against the connecting part (22), and first segmented grooves (231) are evenly formed on the upper circumference of the hot-melt part (23).

3. A stable and firm hot-melt mouth-end assembly structure according to claim 1, characterized in that: The stator core (6) includes magnetic conductive sheets (61) and a plastic housing (63) wrapped outside the magnetic conductive sheets (61). The inner wall of the magnetic conductive sheets (61) is connected to the outer wall of the connecting part (22). Second segmented grooves (611) are evenly formed on the upper circumference of the top surface of the plastic housing (63), and the second segmented grooves (611) are close to the magnetic conductive sheets (61).

4. A stable and firm hot melt mouth end assembly structure according to claim 3, characterized in that: The second segmented grooves (611) have a concave-convex structure.

5. The stable and firm hot-melt end assembly structure according to claim 3, wherein: The outer diameter of the base part (21) is larger than the outer diameter of the connecting part (22) to form a connecting surface (221), and the bottom surface of the magnetic conductive sheets (61) is connected to the connecting surface (221).

6. A stable and firm hot-melt end assembly structure according to claim 3, characterized in that: A receiving part (62) is further arranged on the plastic housing (63), and the receiving part (62) is located above the magnetic conductive sheets (61).

7. A stable and firm hot melt end assembly structure according to claim 1, characterized in that: A rotating shaft (41) is arranged in the bearing (4). The rotating shaft (41) is coaxial with the cylindrical part (2), and the rotating shaft (41) is drivingly connected with an impeller (42).

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