Iron fan impeller and iron belt pulley suitable for washing machine

Abstract

The utility model discloses an iron fan blade wheel and an iron belt wheel suitable for a washing machine. The iron fan blade wheel and the iron belt wheel comprise an iron shaft sleeve with a shaft hole, the iron belt wheel and a plastic fan blade disc. A through hole matched with the shaft hole is formed in the middle of the plastic fan blade disc, and vertical blades in radial radiation are arranged on the upper surface of the plastic fan blade disc; the iron belt pulley comprises a ring base body located in the middle and ring bodies on the upper side and the lower side, the two ring bodies incline oppositely so that an annular belt groove can be formed between the two ring bodies, and the upper face and the lower face of the iron belt pulley can be in a disc shape with the middle concave inwards. A mounting hole is formed in the middle of the ring base body; the upper section of the iron shaft sleeve penetrates through the mounting hole and is riveted and welded with the iron belt pulley; the plastic fan blade disc is fixedly connected with the ring base body; and the iron shaft sleeve and the iron belt pulley provide more excellent strength, wear resistance and deformation resistance, so that the stability of power transmission is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of washing machine parts, and in particular to an iron impeller and an iron pulley suitable for washing machines. Background Technology

[0002] In the field of washing machine technology, the impeller is a key component for achieving motor heat dissipation and transmission. In traditional impeller designs, the pulley, impeller disc, and even the bushing are typically integrally molded from aluminum using die casting. For example, the following patent:

[0003] CN205893685U discloses an impeller for a washing machine motor and a pulsator washing machine having the same. The impeller includes a disc, on which are provided a shaft hole for mounting a motor shaft, a belt axle for mounting a belt, and multiple first and second notches. Blades are spaced circumferentially on the upper surface of the disc. The disc is a single aluminum casting, and the upper portion of the axle extends radially to form the disc for fixing the blades.

[0004] CN206090074U discloses an impeller for a washing machine motor and a pulsator washing machine having the same. The impeller includes a disc, a shaft, and blades. The outer ends of the blades are formed into a forked structure. The disc has a shaft hole and ventilation holes. The impeller is a one-piece aluminum casting.

[0005] However, aluminum has lower strength and wear resistance than iron, especially at high speeds, making aluminum pulleys more prone to wear or deformation, thus affecting their lifespan. This not only reduces the transmission efficiency of the impeller but may also lead to decreased heat dissipation and even motor overheating, impacting the overall performance and reliability of the washing machine. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide an iron impeller suitable for washing machines with better wear resistance and longer service life.

[0007] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: an iron impeller suitable for washing machines.

[0008] It includes an iron bushing with a shaft hole, an iron pulley, and a plastic fan blade; the plastic fan blade has a through hole in the middle that matches the shaft hole, and the upper surface of the plastic fan blade has radially radiating vertical blades.

[0009] The iron pulley includes a ring base in the middle and ring bodies on the upper and lower sides. The two ring bodies are inclined in opposite directions to form an annular belt groove between them, and the upper and lower surfaces of the iron pulley are both disc-shaped with a concave center.

[0010] The ring base has a mounting hole in the middle, the upper section of the iron bushing passes through the mounting hole and is riveted and welded to the iron pulley; the plastic fan blade is fixedly connected to the ring base.

[0011] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the iron pulley is made by circumferential extrusion processing of the middle of the peripheral side of a circular piece.

[0012] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the plastic fan blade disc includes a mounting part located in the middle and a functional part on the periphery. The mounting part is provided with a plurality of first fixing holes around the through hole. The ring base of the iron pulley is provided with a second fixing hole. Fasteners pass through the first fixing holes and the second fixing holes to connect the iron pulley and the plastic fan blade disc.

[0013] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the lower surface of the mounting part is a mounting plane, the diameter of the mounting plane is the same as the diameter of the iron pulley, a protruding post is provided on the mounting plane, the protruding post is located within the downward projection area of ​​the ring base, the first fixing hole is provided in the protruding post, and the end face of the protruding post abuts against the lower surface of the ring base.

[0014] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the iron bushing includes a large-diameter column and a small-diameter column from bottom to top. The outer periphery of the small-diameter column is provided with multiple axial ribs. The mounting hole includes multiple grooves, and the axial ribs pass through the grooves. The upper part of the small-diameter column passing through the iron pulley is riveted to form an circumferential ridge located on the upper surface of the iron pulley and a protrusion corresponding to the position of the axial rib. The protrusion is welded to the iron pulley.

[0015] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an iron pulley suitable for an iron impeller of a washing machine, comprising a ring base in the middle and ring bodies on the upper and lower sides, the two ring bodies being inclined in opposite directions to form an annular belt groove between them, and the upper and lower surfaces of the iron pulley being disc-shaped with a concave center; the iron pulley is made by annularly extruding the center of the circumferential side of a circular piece; the ring base is provided with mounting holes for mounting bushings and hole structures around the mounting holes for mounting impeller discs.

[0016] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the longitudinal section of the annular belt groove is a transverse V-shape, and the inner surfaces of the two annular bodies opposite each other are respectively provided with annular protrusions near the bottom of the V-shaped groove of the annular belt groove so that the inner surface of the annular body has a stepped structure.

[0017] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is: the periphery of the mounting hole is provided with a plurality of mutually spaced grooves.

[0018] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an iron impeller suitable for washing machines, comprising an iron bushing with a shaft hole, an iron pulley, and a plastic fan disc, wherein the plastic fan disc has a through hole in the middle that matches the shaft hole, and the upper surface of the plastic fan disc has radially radiating vertical blades; the iron bushing, the iron pulley, and the plastic fan disc are independently assembled to form an integral component, the iron bushing is fixed to the iron pulley, and the plastic fan disc is fixedly connected to the ring base.

[0019] The preferred technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: the plastic fan blade includes a mounting part in the middle and a functional part on the periphery. The functional part is bent upward and has heat dissipation holes that are evenly distributed in a ring. The vertical blades are set on the solid between two adjacent heat dissipation holes. The lower surface of the mounting part is a mounting plane. The mounting plane is provided with a protruding post. Fasteners pass through the protruding post and are connected to the ring base. The end face of the protruding post abuts against the lower surface of the ring base.

[0020] Compared with existing technologies, the advantages of this invention are: compared with aluminum castings, iron bushings and iron pulleys provide superior strength, wear resistance, and deformation resistance, ensuring the stability of power transmission. The fan blades are injection molded from plastic, which not only reduces overall weight and manufacturing costs but also facilitates the creation of complex blade shapes through injection molding, optimizing airflow efficiency.

[0021] In the preferred embodiment, the iron pulley is manufactured by annular extrusion of the center of the circumferential surface of a circular piece. A V-shaped extrusion head acts on the center of the circumferential surface of the circular piece, forming an annular belt groove while simultaneously pushing the iron material to both sides to form an expanding annular body. This process is more convenient and efficient than conventional turning and milling machine processing. Furthermore, the concave design of the upper and lower surfaces of the iron pulley reduces weight to some extent while maintaining axial height. Attached Figure Description

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0023] Figure 1A three-dimensional structure for an iron impeller suitable for washing machines. Figure 1 ;

[0024] Figure 2 A three-dimensional structure for an iron impeller suitable for washing machines. Figure 2 ;

[0025] Figure 3 A schematic diagram of an iron bushing for an iron impeller suitable for a washing machine;

[0026] Figure 4 A schematic diagram of an iron pulley for an iron impeller suitable for a washing machine;

[0027] Figure 5 A schematic diagram of a plastic fan disc for a washing machine's iron impeller. Figure 1 ;

[0028] Figure 6 A schematic diagram of a plastic fan disc for a washing machine's iron impeller. Figure 2 ;

[0029] Figure 7 This is a schematic diagram of the assembly of an iron bushing and an iron pulley for an iron impeller suitable for a washing machine. Figure 1 ;

[0030] Figure 8 This is a schematic diagram of the assembly of an iron bushing and an iron pulley for an iron impeller suitable for a washing machine. Figure 2 ;

[0031] Figure 9 This is a schematic diagram of a riveted iron bushing for an iron impeller suitable for washing machines. Detailed Implementation

[0032] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0033] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the usual placement of the product during use. These may differ from the orientations in the accompanying drawings. They are used solely for the purpose of describing the utility model from the same reference and for simplification, and do not indicate or imply that the device or component 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. Similarly, "first" and "second" are used only for ease of understanding and have no other directional meaning; they should not be considered as limitations on this utility model.

[0035] like Figure 1-2 As shown in Figures 5-6, this embodiment provides an iron impeller suitable for a washing machine, including an iron bushing 1 with a shaft hole k, an iron pulley 2, and a plastic fan disc 3. The plastic fan disc 3 has a through hole s in the middle that matches the shaft hole k, and the upper surface of the plastic fan disc 3 has radially radiating vertical blades 31.

[0036] Compared to aluminum castings, the iron bushing 1 and iron pulley 2 offer superior strength, wear resistance, and deformation resistance, ensuring stable power transmission. The fan blades are injection molded from plastic, which not only reduces overall weight and manufacturing costs but also facilitates the creation of complex blade shapes through injection molding, optimizing airflow efficiency.

[0037] like Figure 2 , 4 As shown in Figures 7 and 8, the iron pulley 2 includes a central ring base 21 and upper and lower ring bodies 22. The two ring bodies 22 are inclined in opposite directions to form an annular belt groove f between them, and the upper and lower surfaces of the iron pulley 2 are both concave discs. The iron bushing 1 is fixed to the iron pulley 2, and the plastic fan blade 3 is fixedly connected to the ring base 21.

[0038] In this embodiment, the iron bushing 1, the iron pulley 2, and the plastic fan blade 3 are assembled independently to form a single component. In this embodiment, the iron bushing 1, the pulley, and the plastic fan blade 3 are connected by riveting and welding or fasteners, facilitating separate manufacturing and subsequent maintenance, and reducing the difficulty and cost of individual component processing.

[0039] like Figure 4 , 7 As shown in Figure 8, the ring base 21 has a mounting hole e in the middle. The upper section of the iron bushing 1 passes through the mounting hole e and is riveted and welded to the iron pulley 2. This riveting and welding connection technology provides a high-strength and stable connection between the iron bushing 1 and the iron pulley 2, which is suitable for high-speed and high-load working conditions and ensures that the impeller will not loosen or fall off when rotating at high speed.

[0040] like Figure 3 As shown, the iron bushing 1 includes a large-diameter column 11 and a small-diameter column 12 from bottom to top. The outer periphery of the small-diameter column 12 is provided with multiple axial ribs p.

[0041] like Figure 4 As shown, the periphery of the mounting hole e has multiple mutually spaced grooves u. Figure 7-9 As shown, the axial rib p passes through the groove u. The small-diameter column 12 passes through the upper part of the iron pulley 2 and is riveted to form an circumferential rib w on the upper surface of the iron pulley 2 and a corresponding protrusion q at the position of the axial rib p. The protrusion q is welded to the iron pulley 2. The axial rib p and the groove u cooperate to ensure the precise positioning of the iron bushing 1 and the pulley, prevent relative rotation, and the circumferential rib and protrusion welded together by riveting improve the connection strength.

[0042] Preferably, the iron pulley 2 is manufactured by annular extrusion processing of the center of the circumferential side of a circular piece. The V-shaped extrusion head acts on the center of the circumferential side of the circular piece, forming an annular belt groove f while simultaneously pushing the iron material to both sides to form an expanding annular body 22. This process is more convenient and efficient than conventional turning and milling machine processing. Furthermore, the concave design of the upper and lower surfaces of the iron pulley 2 also reduces weight to some extent while maintaining axial height.

[0043] like Figure 2 As shown, the longitudinal section of the annular belt groove f is a transverse V-shape. The inner surfaces of the two opposing annular bodies 22 are respectively provided with annular protrusions r near the bottom of the V-shaped groove f, giving the inner surfaces of the annular bodies 22 a stepped structure. These annular protrusions r enhance the friction between the belt and the pulley, preventing slippage. In this embodiment, the stepped structure is formed simultaneously with the extrusion forming of the annular belt groove f.

[0044] Preferably, since the iron pulley 2 is made of iron, a heat treatment process is added on the basis of the existing extrusion process. That is, the iron pulley 2 is quenched and tempered after extrusion molding to improve its hardness and wear resistance.

[0045] like Figure 4-6 As shown, the plastic fan blade disc 3 includes a mounting part 32 located in the middle and a functional part 33 on the periphery. The mounting part 32 is provided with a plurality of first fixing holes a around the through hole s. The ring base 21 of the iron pulley 2 is provided with a second fixing hole b that matches the first fixing holes a. Fasteners pass through the first fixing holes a and the second fixing holes b to connect the iron pulley 2 and the plastic fan blade disc 3.

[0046] like Figure 5-6As shown, the lower surface of the mounting part 32 is a mounting plane j, the diameter of which is the same as the diameter of the iron pulley 2. A protruding post z is provided on the mounting plane j, located within the downward projected area of ​​the ring base 21. The first fixing hole a is located inside the protruding post z, and the end face of the protruding post z abuts against the lower surface of the ring base 21. In this embodiment, by having the end face of the protruding post z abut against the lower surface of the ring base 21, the contact area is increased, improving connection stability and vibration resistance.

[0047] like Figure 5-6 As shown, the functional part 33 is curved upwards and has evenly distributed, annularly spaced heat dissipation holes g. Vertical blades 31 are disposed on the solid between two adjacent heat dissipation holes g. The heat dissipation holes g between the blades not only reduce the weight of the component and facilitate the operation of the impeller, but also accelerate airflow, preventing the plastic components from softening or aging due to high temperatures, thus extending their service life. Designing the functional part 33 to be curved upwards optimizes airflow guidance, improves blade efficiency, and reduces operating noise.

[0048] Preferably, such as Figure 5 As shown, the outer periphery of the plastic fan blade disk 3 has an upwardly protruding flange n, and the vertical blades 31 extend onto the flange n. This enhances the rigidity of the disk body and blades, prevents deformation during high-speed operation, and improves the airflow coverage.

[0049] Preferably, such as Figure 5-6 As shown, the vertical blade 31 is inclined relative to the horizontal plane, with its outer end higher than its inner end. Preferably, the angle between the functional part 33 and the horizontal plane is 8-15°, and the angle between the upper end face of the vertical blade 31 and the horizontal plane is 5-20°.

[0050] This invention describes an iron impeller suitable for washing machines, using specific examples to illustrate the principles and implementation methods of this invention. The descriptions of these embodiments are merely for the purpose of helping to understand this invention and its core concepts. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. An iron impeller suitable for a washing machine, characterized in that: It includes an iron bushing with a shaft hole, an iron pulley, and a plastic fan blade; the plastic fan blade has a through hole in the middle that matches the shaft hole, and the upper surface of the plastic fan blade has radially radiating vertical blades. The iron pulley includes a ring base in the middle and ring bodies on the upper and lower sides. The two ring bodies are inclined in opposite directions to form an annular belt groove between them, and the upper and lower surfaces of the iron pulley are both disc-shaped with a concave center. The ring base has a mounting hole in the middle, the upper section of the iron bushing passes through the mounting hole and is riveted and welded to the iron pulley; the plastic fan blade is fixedly connected to the ring base.

2. The iron impeller suitable for a washing machine according to claim 1, characterized in that: The iron pulley is made by circumferentially extruding the center of the circumferential side of a circular piece.

3. The iron impeller suitable for a washing machine according to claim 1, characterized in that: The plastic fan blade disc includes a mounting part in the middle and a functional part on the periphery. The mounting part has a plurality of first fixing holes around the through hole, and the ring base of the iron pulley has a second fixing hole. Fasteners pass through the first fixing holes and the second fixing holes to connect the iron pulley and the plastic fan blade disc.

4. The iron impeller suitable for a washing machine according to claim 3, characterized in that: The lower surface of the mounting part is a mounting plane, the diameter of which is the same as the diameter of the iron pulley. A protruding post is provided on the mounting plane, the protruding post being located within the downward projection area of ​​the ring base. The first fixing hole is located inside the protruding post, and the end face of the protruding post abuts against the lower surface of the ring base.

5. The iron impeller suitable for a washing machine according to claim 1, characterized in that: The iron bushing includes a large-diameter column and a small-diameter column from bottom to top. The outer periphery of the small-diameter column is provided with multiple axial ribs. The mounting hole includes multiple grooves, and the axial ribs pass through the grooves. The upper part of the small-diameter column passes through the iron pulley and is riveted to form an circumferential ridge located on the upper surface of the iron pulley and a protrusion corresponding to the position of the axial rib. The protrusion is welded to the iron pulley.

6. An iron pulley for an iron impeller of a washing machine, characterized in that: It includes a central ring base and two annular bodies on the upper and lower sides. The two annular bodies are inclined in opposite directions to form an annular belt groove between them, and the upper and lower surfaces of the iron pulley are both disc-shaped with a concave center. The iron pulley is made by annularly extruding the center of the circumferential side of a circular piece. The ring base is provided with mounting holes for mounting bushings and hole structures around the mounting holes for mounting fan blades.

7. The iron pulley for an iron impeller in a washing machine according to claim 6, characterized in that: The longitudinal section of the annular belt groove is a transverse V-shape, and the inner surfaces of the two annular bodies opposite each other are provided with annular protrusions near the bottom of the V-shaped groove of the annular belt groove so that the inner surface of the annular body has a stepped structure.

8. The iron pulley for an iron impeller in a washing machine according to claim 6, characterized in that: The mounting hole is surrounded by a plurality of spaced grooves.

9. An iron impeller suitable for a washing machine, characterized in that: The device includes an iron bushing with a shaft hole, an iron pulley as described in any one of claims 6-8, and a plastic fan blade disk. The plastic fan blade disk has a through hole in the middle that matches the shaft hole, and the upper surface of the plastic fan blade disk has radially radiating vertical blades. The iron bushing, iron pulley, and plastic fan blade disk are independently assembled to form an integral component. The iron bushing is fixed to the iron pulley, and the plastic fan blade disk is fixedly connected to the ring base.

10. An iron impeller suitable for a washing machine according to claim 9, characterized in that: The plastic fan blade disc includes a mounting part in the middle and a functional part on the periphery. The functional part is bent upward and has heat dissipation holes that are evenly distributed in a ring. The vertical blades are set on the solid between two adjacent heat dissipation holes. The lower surface of the mounting part is a mounting plane. The mounting plane has protruding posts. Fasteners pass through the protruding posts and are connected to the ring base. The end face of the protruding post abuts against the lower surface of the ring base.

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