CN201096107Y

CN201096107Y - Fan wheel

Info

Publication number: CN201096107Y
Application number: CNU2007201754834U
Authority: CN
Inventors: 洪银树
Original assignee: Sunonwealth Electric Machine Industry Co Ltd
Current assignee: Sunonwealth Electric Machine Industry Co Ltd
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2008-08-06
Anticipated expiration: 2017-08-29

Abstract

A fan wheel comprises a wheel hub, a plurality of fan leaves and a metal ring body. The fan leaves are connected to the external circumferential surface of the wheel hub. The wheel hub is provided with a top cover part, a ring wall part and an axostyle base, wherein, the ring wall part axially bends to be formed on the external circumferential edge of the top cover part; internal space is formed by the mutual circumambience of the top cover part and the ring wall part; the axostyle base is arranged at the axial center position of the wheel hub and is positioned in the internal space. In addition, the thickness of the ring wall part is smaller than the thickness of the top cover part, thus the metal ring body is easily matched and assembled in the internal space.

Description

Impeller

Technical field

The utility model relates to a kind of impeller, the particularly thickness of the ringwall portion by reducing a wheel hub, and make the thickness of the thickness of this ringwall portion less than a top cover portion of this wheel hub, so that make and save the impeller of material easily.

Background technique

Existing impeller, announce " the magnet ring fixation arrangement of rotor " novel patent No. 562332 as TaiWan, China, please refer to shown in Fig. 1,2, one of them rotor 7 comprises a wheel hub 71 and several blades 72, this blade 72 rings are established the outer circumferential face of a ringwall 711 that is arranged in this wheel hub 71, and axostylus axostyle 73 correspondence are fixedly arranged on the shaft core position of this wheel hub 71; In addition, the top thickness of this wheel hub 71 is same as the thickness of the ringwall 711 of this wheel hub 71, and the internal face of this ringwall 711 axially forms several in conjunction with fin 712.The external diameter of a metal ring 8 is that one first end 81 from this metal ring 8 enlarges gradually to one second end 82, and these first end, 81 radial inward extend to form a ring lip 83, so that a magnet ring 9 can be resisted against when being incorporated into the internal face of this metal ring 8 on this ring lip 83.

Shown in Fig. 1,2, since the external diameter of first end 81 of this metal ring 8 be slightly less than this wheel hub 71 in conjunction with fin 712 formed internal diameters, and the external diameter of this second end 82 be slightly larger than this wheel hub 71 in conjunction with fin 712 formed internal diameters, so that first end 81 of this metal ring 8 this metal ring 8 when being assembled into this rotor 7 can correspondingly easily embed this ringwall 711 and center on an inner space (sign) that forms; Then, utilize external force to continue this metal ring 8 is embedded this inner space, till in this metal ring 8 embeds this wheel hub 71 fully, this moment, second end 82 of this metal ring 8 was positioned respectively to be somebody's turn to do in conjunction with between the fin 712 via the drive fit mode, and then was assembled into a plasticity impeller finished product.

Generally speaking, above-mentioned existing impeller has following shortcoming, for example: because these wheel hub 71 tops must have enough thickness usually, the situation that fracture is damaged to avoid these wheel hub 71 tops to concentrate near the bending place stress of shaft core position takes place, and because the thickness of the ringwall 711 of this wheel hub 71 is same as the thickness at these wheel hub 71 tops, it causes this ringwall 711 to be not easy to form the plasticity hole enlargement this metal ring 8 is entered, so need other this to be set in conjunction with fin 712 at the internal face of this ringwall 711, to provide plastic deformation ability in conjunction with fin 712 by this, so that these metal ring 8 close-fittings are positioned in this ringwall 711, so then need this metal ring 8 is carried out special additional processing, make two ends of this metal ring 8 form different external diameters, therefore existing impeller needs the more preposition processing action of assembling, and increases the degree of difficulty on making.For these reasons, it is necessary further to improve above-mentioned existing impeller really.

Novel content

The utility model addresses the above problem, a kind of impeller is provided, this impeller makes the thickness of the thickness of its ringwall portion less than top cover portion, reduce the thickness of this ringwall portion by this, and then promote its plastic deformation ability, be convenient to the metal ring body and assemble embedding, make to the utlity model has easy to manufacturely, and have simultaneously and save the effect that material expends in the drive fit mode.

In order to achieve the above object, the utility model provides technological scheme to be: a kind of impeller comprises:

A wheel hub; Wheel hub has a top cover portion, a ringwall portion and an axostylus axostyle pedestal; Ringwall portion axially is bent to form the outer periphery in top cover portion, and this top cover portion and ringwall portion one common peripheral be around forming an inner space, and the axostylus axostyle pedestal is arranged at the shaft core position of this wheel hub, and is positioned at this inner space; The thickness of ringwall portion is less than the thickness of top cover portion; Several flabellums; Flabellum is connected on the outer circumferential face of this wheel hub; And metal ring body; Metal ring body correspondence is assembled in the inner space of this wheel hub; And has a containing space; A ring magnet; The ring magnet correspondence is assembled in the containing space; The internal face bottom of ringwall portion radially is convexly equipped with at least one positioning part towards the axis direction extension of wheel hub; The positioning part is against the end of described metal ring body; The upper end of metal ring body radially extends to form a ring lip towards the axle phase direction of this metal ring body, props up the upper end of ring magnet.

Know-why of the present utility model and beneficial effect: metal ring body of the present utility model is assembled in the inner space of this wheel hub in the drive fit mode, and in the containing space of this metal ring body of the corresponding embedding of this ring magnet; The preferable internal diameter that is slightly larger than this inner space of the external diameter of this metal ring body, because the ringwall portion of this wheel hub has the thickness that is thinner than this top cover portion relatively, make that this ringwall portion can be to providing a preferable plastic deformation ability by the metal ring body, so that utilizing the drive fit mode to embed easily, this metal ring body is positioned this inner space, and after this metal ring body embeds this inner space fully, this ringwall portion also provides firm this metal ring body clamping is positioned in this inner space of elastic restoring force, make this metal ring body seal this ring magnet by this, to avoid producing the leakage field phenomenon; Simultaneously, utilize this metal ring body to support, and strengthen the overall construction intensity of ringwall portion with the thickness that is thinner than this top cover portion relatively in the internal face of this ringwall portion; Simultaneously, because the utility model utilization reduces the thickness of this ringwall portion, make the thickness of the thickness of this ringwall portion less than this top cover portion, thereby reduce the overall weight of this ringwall portion, reduce the overall weight of this impeller by this, the thickness error that is produced when further reducing this ringwall portion of injection molding simultaneously avoids the outer periphery position of this wheel hub to produce the unequal situation of weight, so can effectively promote the balance validity of this impeller, save simultaneously and form the spent material of this wheel hub; Because impeller of the present utility model further is resisted against on the ring lip of this metal ring body from the upper end of this ring magnet, this ring lip is radially extended to form towards its axis direction by the upper end of this metal ring body, for the upper end that props up this ring magnet, make firm being positioned in this containing space of this ring magnet by this, radially be convexly equipped with at least one positioning part with the internal face bottom of this ringwall portion towards the axis direction extension of this wheel hub, terminal correspondence for this metal ring body is resisted against this positioning part, and then prevents that this metal ring body breaks away from the inner space of this wheel hub arbitrarily.By this, promote assembling reliability of the present utility model, and prolong the working life of this impeller.

Description of drawings

Fig. 1: existing impeller analysing and observe and schematic representation when metal ring does not embed impeller;

Fig. 2: the metal ring of existing impeller embeds the assembled sectional view of impeller;

Fig. 3: first embodiment's of the utility model impeller exploded perspective view;

Fig. 4: first embodiment's of the utility model impeller view sub-anatomy;

Fig. 5: first embodiment's of the utility model impeller assembled sectional view;

Fig. 6: second embodiment's of the utility model impeller assembled sectional view.

Wherein: the 1--impeller; The 11--wheel hub; The 110--inner space; The 111--top cover portion; 112--ringwall portion; 113--axostylus axostyle pedestal; The 12--flabellum; The 13--axostylus axostyle; 2--metal ring body; The 20--containing space; 21--encircles lip; The 3--ring magnet; The 7--rotor; The 71--wheel hub; The 711--ringwall; 712--is in conjunction with fin; The 72--blade; The 73--axostylus axostyle; The 8--metal ring; 81--first end; 82--second end; 83--encircles lip; The 9--magnet ring; The a--positioning part; The thickness of T1--top cover portion; The thickness of T2--ringwall portion.

Embodiment

For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, hereinafter will be especially exemplified by the utility model preferred embodiment, and cooperate appended graphicly, be described in detail below:

Please refer to shown in Figure 3, the utility model first embodiment: impeller 1 is utilized by a plastic material (for example: polyphenylene sulfide, polypropylene, resin and polyether-ether-ketone etc.) that the injection molding mode is integrally formed to be made, and it may be selected to be an axial flow impeller or a blowing-type impeller, and the impeller 1 of present embodiment is that an axial flow impeller is as implementing example.This impeller 1 has a wheel hub 11, several flabellums 12 and an axostylus axostyle 13, and this wheel hub 11 is hollow cylindrical; This flabellum 12 is connected on the outer circumferential face of this wheel hub 11 in the mode of equidistant arrangement; This axostylus axostyle 13 is incorporated into the shaft core position of this wheel hub 11.

Please refer to shown in Fig. 3,4, the utility model first embodiment's wheel hub 11 has an inner space 110, top cover portion 111, a ringwall portion 112 and an axostylus axostyle pedestal 113; This inner space 110 is centered on to define by this top cover portion 111 and ringwall portion 112 to form, and it can embed for a metal ring body 2 and ring magnet 3 corresponding assemblings; This ringwall portion 112 axially is bent to form down from the outer periphery of this top cover portion 111; This axostylus axostyle pedestal 113 is arranged at the shaft core position of this wheel hub 11, and is positioned at this inner space 110, for these axostylus axostyle 13 combination location.In addition, the thickness T 2 of this ringwall portion 112 is less than the thickness T 1 of this top cover portion 111.

Please refer to shown in Fig. 4,5, the metal ring body 2 of present embodiment is assembled in the inner space 110 of this wheel hub 11 in the drive fit mode, and in the containing space 20 of these ring magnet 3 corresponding these metal ring bodies 2 of embedding, the upper end of this ring magnet 3 is resisted against on the ring lip 21 of this metal ring body 2, this ring lip 21 is radially extended to form towards its axis direction by the upper end of this metal ring body 2, for the upper end that supports this ring magnet 3, make this ring magnet 3 firm being positioned in this containing space 20 by this; The preferable internal diameter that is slightly larger than this inner space 110 of the external diameter of this metal ring body 2, because the ringwall portion 112 of this wheel hub 11 has the thickness T 2 that is thinner than this top cover portion 111 relatively, make that this ringwall portion 112 can be to providing a preferable plastic deformation ability by metal ring body 2, so that utilizing the drive fit mode to embed easily, this metal ring body 2 is positioned this inner space 110, and after this metal ring body 2 embeds this inner space 110 fully, this ringwall portion 112 also provides firm these metal ring body 2 clampings is positioned in this inner space 110 of elastic restoring force, make this metal ring body 2 these ring magnets 3 of sealing by this, to avoid producing the leakage field phenomenon; Simultaneously, utilize this metal ring body 2 to support, and strengthen the overall construction intensity of ringwall portion 112 with the thickness T 2 that is thinner than this top cover portion 111 relatively in the internal face of this ringwall portion 112.

Shown in Fig. 4,5, because the thickness T 2 that the utility model utilization reduces this ringwall portion 112, make the thickness T 1 of the thickness T 2 of this ringwall portion 112 less than this top cover portion 111, thereby reduce the overall weight of this ringwall portion 112, reduce the overall weight of this impeller 1 by this, the thickness error that is produced when further reducing this ringwall portion 112 of injection molding simultaneously, avoid the outer periphery position of this wheel hub 11 to produce the unequal situation of weight, so can effectively promote the balance validity of this impeller 1, save form the spent material of this wheel hub 11 simultaneously.

Please refer to shown in Figure 6ly, it discloses the utility model second embodiment's impeller.Compared to first embodiment, second embodiment's impeller further radially is convexly equipped with at least one positioning part a towards the axis direction extension of this wheel hub 1 from the internal face bottom of this ringwall portion 112, terminal correspondence for this metal ring body 2 is resisted against this positioning part a, and then prevents that this metal ring body 2 breaks away from the inner space 110 of this wheel hub 1 arbitrarily.By this, promote assembling reliability of the present utility model, and prolong the working life of this impeller 1.

As mentioned above, form different external diameters compared to Fig. 1,2 existing impeller utilization at two ends of this metal ring 8, one first end 81 in order to this metal ring 8 is assembled in the inner space of a wheel hub 71 easily, and this wheel hub 71 and metal ring 8 need the more preposition processing action of assembling, cause the shortcomings such as degree of difficulty in the manufacturing.The thickness T 2 of the ringwall portion 112 of the utility model of Fig. 4 by making this impeller 1 is less than the thickness T 1 of the top cover portion 111 of this impeller 1, reduce the thickness T 2 of this ringwall portion 112 by this, and then promote its plastic deformation ability, so that embedding this ringwall portion 112 in the drive fit mode, this metal ring body 2 centered in the inner space 110 that forms, it can simplify production process really, and saves material simultaneously and expend.

Claims

1, a kind of impeller is characterized in that: this impeller comprises:

A wheel hub; Described wheel hub has a top cover portion, a ringwall portion and an axostylus axostyle pedestal; Described ringwall portion axially is bent to form the outer periphery in described top cover portion, and this top cover portion and ringwall portion one common peripheral be around forming an inner space, and described axostylus axostyle pedestal is arranged at the shaft core position of this wheel hub, and is positioned at this inner space; The thickness of described ringwall portion is less than the thickness of described top cover portion;

Several flabellums; Described flabellum is connected on the outer circumferential face of this wheel hub; And

A metal ring body; Described metal ring body correspondence is assembled in the inner space of this wheel hub; And has a containing space;

A ring magnet; Described ring magnet correspondence is assembled in the described containing space.

2, impeller according to claim 1 is characterized in that: the internal face bottom of described ringwall portion is radially extended towards the axis direction of described wheel hub and is convexly equipped with at least one positioning part; Described positioning part is against the end of described metal ring body.

3, impeller according to claim 1 and 2 is characterized in that: the upper end of described metal ring body radially extends to form a ring lip towards the axle phase direction of this metal ring body, props up the upper end of described ring magnet.