CN206159115U - Fan blade structure and fan - Google Patents

Abstract

The utility model discloses a fan blade structure and fan, this fan blade structure including have the shaft hole the shaft hub, and the rigid coupling in a plurality of blades of shaft hub perisporium, it is a plurality of the blade with the shaft hub is radial evenly distributed for the center is, each surperficial concave the establishing of blade is formed with an at least recess. The utility model discloses a fan blade structure is stable, and the useful life longevity is well just with low costs.

Description

Blade structure and fan

Technical field

The utility model is related to fan technology field, more particularly to a kind of blade structure and the wind using the blade structure Fan.

Background technology

The fan blade of fan generally arranges the few blade of quantity, and because the number of blade can excessively make chord length shorten, vane curvature becomes Greatly, adverse pressure gradient increase, air-flow can be easily separated, and cause the decline of efficiency.Therefore, fan is typically provided with three or five blades.

Blade in existing blade structure is usually smooth curved surface, because the thickness of blade it is relatively thin, it is laminar Blade occurs in process of production stress concentration or residual stress, causes subsequently easily to occur bending and deformation when in use, sometimes Even phenomenon of rupture occurs, the unstable safe handling to user of structure brings hidden danger, while the blade of deformation can affect The airflow effects of fan, and then affect the comfort level for using.

Utility model content

Main purpose of the present utility model is to provide a kind of blade structure, it is intended to which the blade construction for realizing fan blade is stablized, and makes Use good endurance.

For achieving the above object, the utility model proposes blade structure, including the propeller boss with axis hole and be fixed in institute Multiple blades of propeller boss perisporium are stated, multiple blades are radially uniformly distributed centered on the propeller boss, each leaf The surface of piece is recessed to be formed with an at least groove.

Preferably, a surface of each blade is recessed is formed with a groove, the shape of the groove and each leaf The shape of piece is identical.

Preferably, center of the groove of each blade in the blade, each blade and corresponding groove Center coincide.

Preferably, each blade include the fixed edge being connected with the propeller boss and the free margins away from the propeller boss, And connecting the first side and second side of the fixed edge and free margins, the thickness of the blade is along the fixed edge to freedom Successively decrease in the direction that side extends.

Preferably, the fixed edge is arc curve with free margins, and the first side is also equal with the second side For arc curve.

Preferably, every side wall of the groove and diapire are circular sliding slopes, and radian along the fixed edge to freedom The direction that side extends becomes larger.

Preferably, the propeller boss is convexly equipped with the connecting shaft for fixing the propeller boss in the center of end face, and the propeller boss is additionally provided with Multiple reinforcements, each reinforcement connects respectively the perisporium of the connecting shaft and the end face of the propeller boss.

Preferably, multiple reinforcements are radially uniformly arranged in the perisporium of the connecting shaft, and it is each described plus Strong muscle is in described in adjacent two between blade.

The utility model also proposes a kind of fan, including the fan box of head and the connection head, and the head includes driving Dynamic portion and the connecting portion of the connection fan box, the drive division is connected with blade structure, and drives the blade structure to rotate, institute It is above-mentioned blade structure to state blade structure.

Preferably, fan also includes being fixed in the fan guard of the head, and the fan guard includes front shroud and back cover, described Front shroud and back cover are fastened and accommodate the blade structure in the inner.

Blade surface of the technical solutions of the utility model in blade structure is formed with an at least groove, and the groove is for leaf Piece can produce upper and lower tightening force equivalent to a reinforcement structure in the presence of injection production process further groove, and blade can be produced therewith Life is moved along the outside tightening force of recessed circumferential line, so as to resist the stress because shrinking the inside aggregation for occurring so that blade Intensity increase, be not susceptible to flexural deformation, it is ensured that blade structure is stablized, and useful life longevity is good, and realize good air-out Effect.The setting of groove simultaneously, it is possible to reduce the blade for making blade structure uses material, cost-effective.

Description of the drawings

In order to be illustrated more clearly that the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work Under, other accompanying drawings can be obtained with the structure according to these accompanying drawings.

Fig. 1 is the structural representation of the embodiment of the utility model fan one；

Fig. 2 is the structural representation of the blade structure of fan shown in Fig. 1 and fan guard；

Fig. 3 is the structural representation of the utility model blade structure；

Fig. 4 is the left view of blade structure shown in Fig. 3；

Fig. 5 is the rearview of blade structure shown in Fig. 3.

Drawing reference numeral explanation：

Label	Title	Label	Title
				100	Blade structure	200	Fan
10	Propeller boss	210	Fan box
				11	Axis hole	220	Head
13	Connecting shaft	221	Drive division
				15	Reinforcement	223	Connecting portion
30	Blade	230	Fan guard
				31	Groove	231	Front shroud
32	Fixed edge	233	Back cover
				33	Free margins	250	Bearing
34	First side	251	Chassis
				35	Second side	253	Column

The realization of the utility model purpose, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present utility model, rather than all Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making creative work premise Lower obtained every other embodiment, belongs to the scope of the utility model protection.

It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment It is only used for explaining in relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., such as When really the particular pose changes, then directionality indicates also correspondingly to change therewith.

In the utility model, unless otherwise clearly defined and limited, term " connection ", " fixation " etc. should do broad sense reason Solution, for example, " fixation " can be fixedly connected, or be detachably connected, or integral；Can be mechanically connected, also may be used Be electrical connection；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection of two element internals Or the interaction relationship of two elements, unless otherwise clearly restriction.For the ordinary skill in the art, can be with Concrete meaning of the above-mentioned term in the utility model is understood as the case may be.

In addition, and can not manage such as relating to the description of " first ", " second " etc. is only used for describing purpose in the utility model Solve to indicate or implying its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define " the One ", at least one this feature can be expressed or be implicitly included to the feature of " second ".In addition, the skill between each embodiment Art scheme can be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when technical scheme With reference to occur it is conflicting or when cannot realize it will be understood that the combination of this technical scheme is not present, also not in the utility model Within the protection domain of requirement.

The utility model proposes a kind of blade structure 100.

Incorporated by reference to referring to figs. 1 to Fig. 3, in the embodiment of the utility model one, the blade structure 100 is included with axis hole 11 Propeller boss 10 and be fixed in multiple blades 30 of the perisporium of propeller boss 10, multiple blades 30 are radially uniform centered on propeller boss 10 Distribution, the surface of each blade 30 is recessed to be formed with an at least groove 31.

In the utility model embodiment, blade structure 100 is mainly used in fan 200, and various blower fans are can be also used for certainly And in other similar mechanisms.The fan 200 includes head 220 and the fan box 210 being connected with head 220, and head 220 includes driving Dynamic portion 221 and the connecting portion 223 of connection fan box 210, drive division is connected with blade structure 100, and drives 100 turns of blade structure It is dynamic.Drive division 221 is provided with the rotary shaft (not shown) installed for blade structure 100, and the blade structure 100 of the present embodiment includes peace Propeller boss 10 loaded on drive division 221, the center of propeller boss 10 offers axis hole 11, and the rotary shaft of drive division 221 wears and is fixed on axle Hole 11.Blade structure 100 also includes being fixed in multiple blades 30 of the perisporium of propeller boss 10, and five blades 30 are provided with the present embodiment, Five blades 30 are radially uniformly distributed centered on propeller boss 10, the air-supply model of the blade structure 100 with five blades 30 Enclose wider, and with the little characteristic of noise.Additionally, the diapire of the groove 31 of each blade 30 is mapped to another table of the blade 30 Face can for projection, or each blade 30 arrange groove 31 do not affect relative another surface.

Technical solutions of the utility model are that the surface of blade 30 in blade structure 100 is formed with an at least groove 31, should Groove 31 can produce upper and lower tightening force for blade 30 equivalent to a reinforcement structure, the in process of production presence of groove 31, Blade 30 can therewith be produced along the outside tightening force of the perimeter line of groove 31 and moved so that the intensity of blade 30 increases, so as to Flexural deformation is not susceptible to, useful life longevity is good, it is ensured that stablizing for blade structure 100, realizes good air-out effect.It is simultaneously recessed The setting of groove 31, it is possible to reduce make the use material of blade structure 100, it is cost-effective.

Incorporated by reference to reference to Fig. 3 to Fig. 5, a surface of each blade 30 is recessed to be formed with a groove 31, the shape of the groove 31 Shape is identical with the shape of each blade 30.

The surface of blade 30 can form multiple grooves 31, and the shape of multiple grooves 31 can be identical, or Differ, its shape can be for square, circular, polygon or other are irregularly shaped etc..In the present embodiment, each blade 30 A surface it is recessed be formed with a groove 31, and another surface of each blade 30 is smooth surface, the shape of the groove 31 It is identical with the shape of each blade 30, the groove 31 can be enabled to occupy the larger area of blade 30, and the edge of groove 31 It is parallel with the edge of blade 30, it is ensured that the presence of groove 31 makes the tension that blade 30 is produced each in being evenly dispersed into Side, so that the anti-deformation ability of the blade 30 is often located equal on each side, can further prevent blade 30 from occurring curved Song deformation.The overall also more convenient production of groove 31 simultaneously, simplifies the manufacture of mould, cost-effective.Certainly, each blade 30 Multiple grooves 31 can also be formed, the spliced shape of multiple grooves 31 is identical with the shape of blade 30.

Referring once again to Fig. 3, the groove 31 of each blade 30 is in the center of the blade 30, each blade 30 and phase The center of corresponding groove 31 coincides.

In the present embodiment, by the groove 31 of each blade 30 located at the center of the blade 31, this center is leaf The center of the shape of piece 30.The shape of groove 31 is identical with the shape of blade 30, i.e. the profile of blade 30 and groove 31 is opened Mouth-shaped similar polygon each other, now, each blade 30 coincides with the center of corresponding groove 31, can cause blade 30 Because the groove 31 presence produced by tension up and down be more distributed evenly in blade 30 so that blade 30 surface is preapred for an unfavorable turn of events Shape ability is equal everywhere, so that the bulk strength of blade 30 is further improved.Specifically, the size that groove 31 is opened up needs root Select according to the size of concrete blade 30, it is impossible to too big, otherwise for the anti-deformation ability of blade 30 does not play castering action, Can not be too small, otherwise the edge of blade 30 easily ruptures because of the tension of groove 31, causes blade 30 more yielding Fracture, therefore the value needs appropriate selection.

Incorporated by reference to reference to Fig. 3 and Fig. 4, each blade 30 includes the fixed edge 31 being connected with propeller boss 10 and away from propeller boss 10 Free margins 33 and be connected side 32 and the first side 34 and second side 35 of free margins 33, the thickness of blade 30 is along fixed Successively decrease in side 32 to the direction that free margins 33 extends.

Specifically, in the present embodiment, the fixed edge 32 and free margins 33 of blade 30 are located in a certain sagittal plane of propeller boss 10 Plane on be projected as arc-shaped curved surface so that blade 30 on its cross section have certain curvature, drive first side 34 with Projection of the second side 35 in the plane that a sagittal plane of propeller boss 10 is located also is arc-shaped curved surface, and the curvature of blade 30 is bigger, Under same rotational speed, gas kinetic energy is also bigger, i.e. air quantity is bigger with blast.But while the resistance suffered by blade 30 is also bigger, Ask the torsion of drive division 221 bigger, so the curvature of blade 30 should take suitable scope, it is ensured that while 200 energy-conservation of fan There can be larger air quantity.The fixed edge 32 of blade 30 inclining in certain angle setting, i.e. blade 30 with the end face of propeller boss 10 Angle, the inclination angle can be lifted within the specific limits, to obtain larger blast.First side 34 is with second side 35 in propeller boss 10 Projection on end face is also arc curve, then the air-flow that can ensure the blowout of blade structure 100 concentrates on the front of fan 200 Cylindrical space in, increase air supplying distance and blast.In the present embodiment, the thickness of blade 30 prolongs along fixed edge 32 to free margins 33 The direction stretched is successively decreased, and can make blade 30 in rotary course, increases wind area, lifts rotation dynamics.Blade is caused simultaneously 30 is higher with the intensity of the junction of propeller boss 10, further lifts the stability of blade structure 100.

Continue referring to Fig. 3, every side wall and the diapire of groove 31 are circular sliding slopes, and radian along fixed edge 32 to from The direction extended by side 33 becomes larger.

In the present embodiment, every side wall and the diapire of groove 31 are circular sliding slopes, can cause the surface of blade 30 more It is smooth, be not in the possibility for causing crackle occur because of somewhere stress concentration.Simultaneously circular sliding slopes can reduce windage, it is ensured that gas Stream is smooth to be passed through, so as to reduce the driving force of drive division 221, energy saving.The arc formed between the side wall of groove 31 and diapire Degree becomes larger along fixed edge 32 to the direction that free margins 33 extends, i.e., the closer to the free margins 33 of blade 30, the side of groove 31 Wall is gentler, when rotating because of blade structure 100, cuts the order of air successively from the root of blade 30 to end sliding, gently Side wall can further improve the smoothness that air-flow passes through so that blade structure 100 reduces in use friction, Both the air-out efficiency of blade structure 100 can have been improved, it is also possible to so that the performance of blade structure 100 is more stable, using durable Property is good.

Fig. 3 and Fig. 4 is refer to, propeller boss 10 is convexly equipped with the connecting shaft 13 of fixed propeller boss 10, propeller boss 10 in the center of end face Multiple reinforcements 15 are additionally provided with, each reinforcement 15 connects respectively the perisporium of connecting shaft 13 and the end face of propeller boss 10.

In the present embodiment, the connecting shaft 13 is connected and fixed on drive division 221 so that the blade structure 100 can be by driving The support and driving in portion 221 carries out air-out work.By arranging multiple reinforcements 15, the connection connecting shaft 13 of each reinforcement 15 The end face of perisporium and propeller boss 10, can significantly improve propeller boss 10 intensity of itself, so as to the connection for ensureing to be connected with drive division 221 Intensity.In specific blade structure 100, multiple reinforcements 15 are radially uniformly arranged in the perisporium of connecting shaft 13 so that plus The support force that strong muscle 15 puts on connecting shaft 13 is uniformly distributed in the circumference of connecting shaft 13, can further improve the connecting shaft 13 Intensity.The present embodiment is provided with five reinforcements 15, and each reinforcement 15 is between two adjacent blades 30, and the structure can be with The overall continuity for lifting multiple blades 30, so that blade structure 100 is more stable.

Incorporated by reference to seeing figures.1.and.2, the utility model also proposes a kind of fan 200, and the fan 200 includes the He of head 220 The fan box 210 of connection head 220, head 220 includes the connecting portion 223 of drive division 221 and connection fan box 220, and drive division 221 connects Blade structure 100 is connected to, and drives blade structure 100 to rotate, the concrete structure of the blade structure 100 is with reference to above-mentioned enforcement Example, because this fan 200 employs whole technical schemes of above-mentioned all embodiments, therefore at least skill with above-described embodiment All beneficial effects that art scheme is brought, this is no longer going to repeat them.

Specifically, fan box 210 and be provided with manipulation button or knob, for being controlled to the mode of operation of fan 200.Fan If 200 stand fans, also include support fan box 210 bearing 250, bearing 250 include chassis 251 and connection fan box 210 and The column 253 on chassis 251.Chassis 251 is substantially in the form of annular discs, it is possible to provide relatively stable support, column 253 can be in height side The air-out height of fan 200 is adjusted upward, so as to increase the comfort of fan 200.

Additionally, refer to Fig. 1, fan 200 also includes being fixed in the fan guard 230 of head 220, and fan guard 230 includes front Cover 231 and back cover 233, front shroud 231 and back cover 233 are fastened and accommodate blade structure 100 in the inner.The fan guard 230 can be by Blade structure 100 can play the function of protecting users from being scraped off in being surrounded on this, also have one to blade structure 100 Fixed protection, plays good segmentation effect so that air-out is uniform and gentle, improves simultaneously for the air-out effect of fan 200 Comfort.

Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, It is every under inventive concept of the present utility model, the equivalent structure made using the utility model specification and accompanying drawing content is become Change, or directly/be used in other related technical fields indirectly and be included in scope of patent protection of the present utility model.

Claims (10)

1. a kind of blade structure, the blade structure includes the propeller boss with axis hole and is fixed in multiple leaves of the propeller boss perisporium Piece, multiple blades are radially uniformly distributed centered on the propeller boss, it is characterised in that the surface of each blade It is recessed to be formed with an at least groove.

2. blade structure as claimed in claim 1 a, it is characterised in that surface of each blade is recessed, and to be formed with recessed Groove, the shape of the groove is identical with the shape of each blade.

3. blade structure as claimed in claim 2, it is characterised in that the groove of each blade is located at the center of the blade Position, the center of the corresponding groove of each blade coincides.

4. the blade structure as described in claims 1 to 3 is arbitrary, it is characterised in that each blade includes and the propeller boss The first side and the second side of the fixed edge of connection and the free margins away from the propeller boss and the connection fixed edge and free margins Side, the thickness of the blade successively decreases along the fixed edge to the direction that free margins extends.

5. blade structure as claimed in claim 4, it is characterised in that the fixed edge is arc-shaped curved surface with free margins, institute State first side and be also arc-shaped curved surface with the second side.

6. blade structure as claimed in claim 4, it is characterised in that every side wall of the groove is circular arc company with diapire Connect, and radian becomes larger along the fixed edge to the direction that free margins extends.

7. blade structure as claimed in claim 1, it is characterised in that the propeller boss in the center of end face be convexly equipped with it is fixed should The connecting shaft of propeller boss, the propeller boss is additionally provided with multiple reinforcements, and each reinforcement connects respectively the perisporium of the connecting shaft With the end face of the propeller boss.

8. blade structure as claimed in claim 7, it is characterised in that multiple reinforcements are radially uniformly arranged in institute State the perisporium of connecting shaft, and each reinforcement is in described in adjacent two between blade.

9. the fan box of a kind of fan, including head and the connection head, it is characterised in that the head includes drive division and company The connecting portion of the fan box is connect, the drive division is connected with blade structure, and drives the blade structure to rotate, the fan blade knot Structure is the arbitrary described blade structure of the claims 1 to 8.

10. fan as claimed in claim 9, it is characterised in that also including the fan guard for being fixed in the head, the fan Cover includes front shroud and back cover, and the front shroud and back cover are fastened and accommodate the blade structure in the inner.