Magnetic ring shaft cover and cross-flow fan blade

Abstract

The utility model discloses a magnetic ring shaft cover and a cross-flow fan blade. The magnetic ring shaft cover comprises a cover plate, a magnetic ring body and a blade groove plate. A limiting groove is formed in the upper end face of the cover plate. The magnetic ring body is located below the cover plate, and the magnetic ring body and the cover plate are coaxially arranged and integrally formed in an injection molding mode. The blade groove plate is located above the cover plate, the blade groove plate and the cover plate are coaxially arranged, a plurality of blade-shaped grooves are formed in the upper end face of the blade groove plate and distributed in the circumferential direction of the blade groove plate, a plurality of limiting blocks are arranged on the lower end face of the blade groove plate and distributed in the circumferential direction of the blade groove plate, the limiting blocks correspond to the limiting grooves in a one-to-one mode, and the lower ends of the limiting blocks are inserted into the cover plate. The cover plate of the magnetic ring shaft cover and the magnetic ring body are integrally injected and fixed relatively, and the blade groove plate is connected with the cover plate through the limiting block. When the blade shape needs to be replaced, only the blade groove plate needs to be subjected to die opening again so as to change the corresponding blade-shaped groove, the cover plate and the magnetic ring body do not need to be subjected to die opening again, and therefore cost is saved, and the forming period of a product is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a magnetic ring shaft cover and a cross-flow fan blade. Background Art

[0002] The traditional magnetic ring shaft cover is an integrated design. When the blade shape of the crossflow fan blade needs to be changed, the blade groove on the magnetic ring shaft cover has been fixed and cannot adapt to the new blade shape. The entire magnetic ring shaft cover needs to be re-molded, resulting in a long product molding cycle and high manufacturing costs. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the present invention provides a magnetic ring shaft cover and a crossflow fan blade.

[0004] In a first aspect, an embodiment of the present invention provides a magnetic ring shaft cover, the magnetic ring shaft cover comprising:

[0005] A cover plate, wherein the upper end surface of the cover plate is provided with a limiting groove, and a plurality of the limiting grooves are distributed along the circumference of the cover plate;

[0006] A magnetic ring body is located below the cover plate, and the magnetic ring body and the cover plate are coaxially arranged and integrally injection-molded;

[0007] The vane trough plate is located above the cover plate, and the vane trough plate is coaxially arranged with the cover plate. The upper end surface of the vane trough plate is provided with a plurality of leaf-shaped grooves, and the plurality of leaf-shaped grooves are distributed circumferentially around the vane trough plate. The lower end surface of the vane trough plate is provided with a plurality of limit blocks, and the plurality of limit blocks are distributed circumferentially along the vane trough plate. The plurality of limit blocks correspond one-to-one to the plurality of limit grooves, and the lower end of the limit block is inserted into the cover plate.

[0008] The magnetic ring shaft cover according to the present invention has at least the following technical advantages: the cover plate and the magnetic ring body are integrally injection-molded, thereby securing them relative to each other. The trough plate is then connected to the cover plate via a stopper. When the blade shape needs to be changed, only the trough plate needs to be re-molded to change the corresponding blade groove, eliminating the need to re-mold the cover plate and the magnetic ring body, thereby saving costs and shortening the product molding cycle.

[0009] According to some embodiments of the present invention, the outer peripheral wall of the cover plate is provided with a notch, which extends upward and passes through the upper end surface of the cover plate, and the outer peripheral wall of the trough plate is provided with a positioning strip, which extends in the up and down directions and is inserted into the notch.

[0010] According to some embodiments of the present invention, a shaft sleeve portion is provided in the middle portion of the cover plate, and the shaft sleeve portion is used to be connected to the rotating shaft.

[0011] According to some embodiments of the present invention, a plurality of reinforcing ribs are provided on the cover plate, and the plurality of reinforcing ribs are distributed circumferentially along the shaft sleeve portion, and the reinforcing ribs are fixedly connected to the cover plate and the shaft sleeve portion respectively.

[0012] According to some embodiments of the present invention, the upper end surface of the magnetic ring body is recessed downward to form a first annular groove, the upper end surface of the magnetic ring body is provided with a first annular convex portion, the first annular convex portion is located on the side of the first annular groove away from the axis of the magnetic ring body, the lower end surface of the cover plate is recessed upward to form a second annular groove, and the first annular convex portion is inserted into the second annular groove.

[0013] According to some embodiments of the present invention, an annular convex strip is provided on the side of the first annular protrusion away from the axis of the magnetic ring body, and a third annular groove is provided on the groove wall of the second annular groove away from the axis of the cover plate, and the annular convex strip is inserted into the third annular groove.

[0014] According to some embodiments of the present invention, the upper end surface of the magnetic ring body is provided with a plurality of protrusions, and the plurality of protrusions are distributed circumferentially along the magnetic ring body; the lower end surface of the cover plate is provided with a positioning groove, and the plurality of positioning grooves are distributed circumferentially along the cover plate; the plurality of protrusions correspond one-to-one to the plurality of positioning grooves, and the protrusions are inserted into the positioning grooves.

[0015] According to some embodiments of the present invention, the protrusion includes a first part and a second part, the first part extends in a horizontal direction, the second part extends in a vertical direction, one end of the first part close to the axis of the magnetic ring body is fixedly connected to the upper end of the second part, the second part is inserted into the first annular groove, and the lower end surface of the second part is attached to the upper end surface of the magnetic ring body.

[0016] According to some embodiments of the present invention, the lower end surface of the cover plate extends downward to form a retaining ring, and the magnetic ring body is located on the inner side of the retaining ring.

[0017] In a second aspect, an embodiment of the present invention further provides a cross-flow fan blade, comprising a magnetic ring shaft cover according to the embodiment of the first aspect of the present invention.

[0018] The crossflow fan blades of the present invention have at least the following technical advantages: the crossflow fan blades utilize the magnetic ring shaft cover, wherein the cover plate and the magnetic ring body of the magnetic ring shaft cover are integrally injection-molded to secure the cover plate relative to the magnetic ring body, and the blade slots are connected to the cover plate via stoppers. When the blade shape needs to be changed, only the blade slots need to be re-molded to change the corresponding blade slots, eliminating the need to re-mold the cover plate and the magnetic ring body, thereby saving costs and shortening the product molding cycle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic structural diagram of a magnetic ring shaft cover in some embodiments of the present invention;

[0022] Figure 2 This is an exploded view of a magnetic ring shaft cover in some embodiments of the present invention;

[0023] Figure 3 is a cross-sectional view of a magnetic ring shaft cover according to some embodiments of the present invention;

[0024] Figure 4 It is an exploded cross-sectional view of a magnetic ring shaft cover in some embodiments of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the crossflow fan blades of some embodiments of the present invention.

[0026] Figure Number:

[0027] Cover plate 100, limiting groove 110, notch 120, sleeve portion 130, reinforcing rib 131, second annular groove 140, third annular groove 150, positioning groove 160, retaining ring 170;

[0028] Magnetic ring body 200, first annular groove 210, first annular protrusion 211, annular ridge 220, protrusion 230, first portion 231, second portion 232;

[0029] The leaf trough plate 300 , the leaf-shaped groove 310 , the limit block 320 , and the positioning bar 330 . DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of this utility model, "above," "below," and "within" are understood to be exclusive of the number indicated, while "above," "below," and "within" are understood to be inclusive of the number indicated. The use of "first" and "second" is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, or implicitly specifying the number or order of the technical features indicated.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0034] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings.

[0035] According to some embodiments of the present invention, referring to Figures 1 to 4 The magnetic ring shaft cover includes a cover plate 100, a magnetic ring body 200 and a trough plate 300. The upper end surface of the cover plate 100 is provided with a limit groove 110, and a plurality of limit grooves 110 are distributed circumferentially along the cover plate 100. The magnetic ring body 200 is located below the cover plate 100, and the magnetic ring body 200 is coaxially arranged with the cover plate 100 and is integrally injection molded. The trough plate 300 is located above the cover plate 100, and the trough plate 300 is coaxially arranged with the cover plate 100. The upper end surface of the trough plate 300 is provided with a plurality of leaf-shaped grooves 310, and the plurality of leaf-shaped grooves 310 are distributed circumferentially around the trough plate 300. The lower end surface of the trough plate 300 is provided with a plurality of limit blocks 320, and the plurality of limit blocks 320 are distributed circumferentially along the trough plate 300. The plurality of limit blocks 320 correspond one-to-one to the plurality of limit grooves 110, and the lower end of the limit block 320 is inserted into the cover plate 100.

[0036] It is understood that the cover plate 100 and the magnetic ring body 200 of the magnetic ring shaft cover are relatively fixed by integral injection molding, and the limit block 320 of the trough plate 300 is inserted from top to bottom into the limit groove 110, so that the trough plate 300 is connected to the cover plate 100. Preferably, the trough plate 300 is relatively fixed to the cover plate 100 by a welding process to enhance the connection stability between the trough plate 300 and the cover plate 100.

[0037] When the crossflow fan blade needs to change its blade shape, it only needs to re-mold the blade slot plate 300 to change the corresponding blade slot 310, avoiding the need to re-mold the cover plate 100 and the magnetic ring body 200, thereby saving costs and shortening the product molding cycle. Figure 5 The cross-flow fan blade adopts this magnetic ring shaft cover. When the blade needs to be replaced, only the blade slot plate 300 needs to be replaced. The magnetic ring body 200 part retains the assembly part to the greatest extent through structural optimization, maximizing the benefits of the magnetic ring material. Reduce costs, improve shrinkage and bubbles. Realize the standardized design of the rotor part of the inner rotor motor. A single rotor can be matched with wind wheels of different blade shapes, performance specifications, models, and manufacturers under the same diameter. When the blade slot 310 needs to be replaced, only the mold of the blade slot plate 300 needs to be replaced, and the remaining molds can be universalized.

[0038] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The outer wall of the cover plate 100 is provided with a notch 120, which extends upward through the upper end surface of the cover plate 100. The outer wall of the trough plate 300 is provided with a positioning bar 330, which extends in the vertical direction. When the trough plate 300 needs to be assembled with the cover plate 100, the trough plate 300 is moved from top to bottom close to the cover plate 100, so that the positioning bar 330 is inserted into the notch 120, thereby completing the positioning assembly.

[0039] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 A shaft sleeve portion 130 is provided in the middle of the cover plate 100 for connection to the rotating shaft. Preferably, the cover plate 100 is provided with a plurality of reinforcing ribs 131, which are distributed circumferentially along the shaft sleeve portion 130. The reinforcing ribs 131 are respectively fixedly connected to the cover plate 100 and the shaft sleeve portion 130, thereby enhancing the connection strength between the shaft sleeve portion 130 and the cover plate 100.

[0040] According to some embodiments of the present invention, referring to Figures 2 to 4 The upper end surface of the magnetic ring body 200 is recessed downward to form a first annular groove 210. The upper end surface of the magnetic ring body 200 is provided with a first annular protrusion 211. The first annular protrusion 211 is located on the side of the first annular groove 210 away from the axis of the magnetic ring body 200. The lower end surface of the cover plate 100 is recessed upward to form a second annular groove 140. The first annular protrusion 211 is inserted into the second annular groove 140. It is understood that when the magnetic ring body 200 and the cover plate 100 are integrally injection-molded, the cooperation between the first annular protrusion 211 and the second annular groove 140 can limit the relative movement of the cover plate 100 and the magnetic ring body 200 in the horizontal direction.

[0041] According to some embodiments of the present invention, referring to Figure 3 and Figure 4An annular ridge 220 is provided on the side of the first annular protrusion 211 away from the axis of the magnetic ring body 200, and a third annular groove 150 is provided on the groove wall of the second annular groove 140 away from the axis of the cover plate 100. The annular ridge 220 is inserted into the third annular groove 150. It is understood that when the magnetic ring body 200 and the cover plate 100 are integrally injection molded, the cooperation between the annular ridge 220 and the third annular groove 150 can limit the relative movement of the cover plate 100 and the magnetic ring body 200 in the vertical direction.

[0042] According to some embodiments of the present invention, referring to Figure 2 and Figure 4 The upper end surface of the magnetic ring body 200 is provided with a plurality of protrusions 230, which are distributed along the circumference of the magnetic ring body 200. The lower end surface of the cover plate 100 is provided with positioning grooves 160, which are distributed along the circumference of the cover plate 100. The plurality of protrusions 230 correspond one-to-one with the plurality of positioning grooves 160, and the protrusions 230 are inserted into the positioning grooves 160. The protrusions 230 can enhance the connection strength between the magnetic ring body 200 and the cover plate 100.

[0043] According to some embodiments of the present invention, the protrusion 230 includes a first part 231 and a second part 232, the first part 231 extends in the horizontal direction, and the second part 232 extends in the vertical direction. The end of the first part 231 close to the axis of the magnetic ring body 200 is fixedly connected to the upper end of the second part 232, the second part 232 is inserted into the first annular groove 210, and the lower end surface of the second part 232 is attached to the upper end surface of the magnetic ring body 200, thereby enhancing the connection strength between the protrusion 230 and the magnetic ring body 200.

[0044] According to some embodiments of the present invention, referring to Figure 3 and Figure 4 The lower end surface of the cover plate 100 extends downward to form a retaining ring 170, and the magnetic ring body 200 is located inside the retaining ring 170. The retaining ring 170 can be used to prevent external objects from colliding with the magnetic ring body 200, causing the magnetic ring body 200 to deviate and affect the normal operation of the magnetic ring body 200.

[0045] Throughout this specification, references to the term "some embodiments" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A magnetic ring shaft cover, characterized in that: include: A cover plate (100), wherein the upper end surface of the cover plate (100) is provided with a limiting groove (110), and a plurality of the limiting grooves (110) are distributed along the circumference of the cover plate (100); A magnetic ring body (200) is located below the cover plate (100), and the magnetic ring body (200) and the cover plate (100) are coaxially arranged and integrally injection-molded; A trough plate (300) is located above the cover plate (100), the trough plate (300) and the cover plate (100) are coaxially arranged, the upper end surface of the trough plate (300) is provided with a plurality of leaf-shaped grooves (310), the plurality of leaf-shaped grooves (310) are distributed circumferentially around the trough plate (300), the lower end surface of the trough plate (300) is provided with a plurality of limit blocks (320), the plurality of limit blocks (320) are distributed circumferentially along the trough plate (300), the plurality of limit blocks (320) correspond one-to-one to the plurality of limit grooves (110), and the lower ends of the limit blocks (320) are inserted into the cover plate (100).

2. The magnetic ring shaft cover according to claim 1, characterized in that: The outer peripheral wall of the cover plate (100) is provided with a notch (120), and the notch (120) extends upward and penetrates the upper end surface of the cover plate (100); the outer peripheral wall of the trough plate (300) is provided with a positioning bar (330), and the positioning bar (330) extends in the up-down direction and is inserted into the notch (120).

3. The magnetic ring shaft cover according to claim 1, characterized in that: A shaft sleeve portion (130) is provided in the middle of the cover plate (100), and the shaft sleeve portion (130) is used to be connected to the rotating shaft.

4. The magnetic ring shaft cover according to claim 3, characterized in that: The cover plate (100) is provided with a plurality of reinforcing ribs (131), the plurality of reinforcing ribs (131) are distributed along the circumference of the shaft sleeve portion (130), and the reinforcing ribs (131) are fixedly connected to the cover plate (100) and the shaft sleeve portion (130), respectively.

5. The magnetic ring shaft cover according to claim 1, characterized in that: The upper end surface of the magnetic ring body (200) is recessed downward to form a first annular groove (210), and the upper end surface of the magnetic ring body (200) is provided with a first annular protrusion (211), and the first annular protrusion (211) is located on the side of the first annular groove (210) away from the axis of the magnetic ring body (200), and the lower end surface of the cover plate (100) is recessed upward to form a second annular groove (140), and the first annular protrusion (211) is inserted into the second annular groove (140).

6. The magnetic ring shaft cover according to claim 5, characterized in that: An annular convex strip (220) is provided on the side of the first annular protrusion (211) away from the axis of the magnetic ring body (200), and a third annular groove (150) is provided on the groove wall of the second annular groove (140) away from the axis of the cover plate (100), and the annular convex strip (220) is inserted into the third annular groove (150).

7. The magnetic ring shaft cover according to claim 5, characterized in that: The upper end surface of the magnetic ring body (200) is provided with a plurality of protrusions (230), and the plurality of protrusions (230) are distributed along the circumference of the magnetic ring body (200); the lower end surface of the cover plate (100) is provided with a positioning groove (160), and the plurality of positioning grooves (160) are distributed along the circumference of the cover plate (100); the plurality of protrusions (230) correspond to the plurality of positioning grooves (160) one by one, and the protrusions (230) are inserted into the positioning grooves (160).

8. The magnetic ring shaft cover according to claim 7, characterized in that: The protrusion (230) includes a first part (231) and a second part (232), wherein the first part (231) extends in a horizontal direction, and the second part (232) extends in a vertical direction, and one end of the first part (231) close to the axis of the magnetic ring body (200) is fixedly connected to the upper end of the second part (232), and the second part (232) is inserted into the first annular groove (210), and the lower end surface of the second part (232) is in contact with the upper end surface of the magnetic ring body (200).

9. The magnetic ring shaft cover according to claim 1, characterized in that: The lower end surface of the cover plate (100) extends downward to form a retaining ring (170), and the magnetic ring body (200) is located inside the retaining ring (170).

10. A crossflow fan blade, characterized in that: The invention comprises a magnetic ring shaft cover as described in any one of claims 1 to 9.

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