CN2644731Y

CN2644731Y - Ventilating fan structure capable of transforming blades

Info

Publication number: CN2644731Y
Application number: CN 03206817
Authority: CN
Inventors: 吴宇宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-01
Filing date: 2003-08-01
Publication date: 2004-09-29
Anticipated expiration: 2013-08-01

Abstract

The utility model relates to a ventilating fan structure capable of transforming blades, wherein an upper body is arranged below a front cover. The outer edge end surface of the upper body is chiseled with a plurality of positioning holes, both sides of the positioning holes are respectively chiseled with a screw perforation, and then a plurality of combined type blades are arranged below the upper body. The upper and the lower end surfaces of the combined type blades are respectively extended with a positioning column, and both sides of the positioning columns are respectively chiseled with a locking perforation. A lower body is arranged below the combined type blades, the outer edge end surface of the lower body is chiseled with a plurality of positioning holes, both sides of the positioning holes are respectively chiseled with a screw perforation, and then a positioning screw is arranged in the screw perforation. The positioning screw travels through the screw perforations of the combined type blades, and then travels through the screw perforations of the upper body. A locking cap nut is used for locking and positioning the positioning screw, so that the upper body, the combined type blades and the lower body are locked into integration. Different upper bodies, combined type blades and lower bodies can be assembled according to different needs, and the utility model can match with the adjustment of additional weight sheets to achieve the balance of the rotation of the ventilating fan.

Description

The ventilating fan structure of convertible fan blade

Technical field

The utility model relates to a kind of ventilating fan structure of convertible fan blade, can reach body down according to the different upper body of different needs assemblings, combined vanes, and can cooperate the adjustment of Weight stack, makes the ventilating fan rotary balance then.

Background technique

General ventilating fan, though should by ventilating fan reach indoor air is expelled to outdoor, yet this ventilating fan is one of the forming, if when needing higher exhaust air rate, needs to buy in addition the more ventilating fan of blade, so the waste of ten minutes; When blade when making, as because of each blade vary in weight and each leaf position when the spacing in axle center is uneven, then when running, the imbalance that rotates easily produces noise then, when serious, also may make the sharf reduction decrease and rupture.

Summary of the invention

The ventilating fan structure of convertible fan blade of the present utility model comprises a protecgulum, a upper body, the box-like fan blade of array, once body, number set screws and several locking nuts; It is characterized in that, a upper body is established in the protecgulum below, upper body outer rim end face cutter is established several positioning holes, cut a hole respectively in the positioning hole both sides again and establish screw perforation, wherein on this combined vanes, auspicious face extends a locating column down, these locating column both sides are cut a hole respectively and are established a locking perforation, body is established in the combined vanes below, this time body outer rim end face cutter is established several positioning holes, and cut a hole respectively in the positioning hole both sides and to establish screw perforation, this screw perforation inside wears a location screw, and this set screw penetrates the screw perforation of combined vanes then, penetrate the screw perforation of this upper body again, and the set screw locking is located with locking nut.

The utility model is described with instantiation below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a three-dimensional combination figure of the present utility model;

Fig. 2 is a three-dimensional exploded view of the present utility model;

Fig. 3 is a combined vanes schematic perspective view of the present utility model;

Fig. 4 is a counterweight schematic representation of the present utility model;

Fig. 5 is an action schematic representation of the present utility model;

Fig. 6 is another three-dimensional exploded view of the present utility model;

Fig. 7 is an another three-dimensional exploded view of the present utility model.

Description of reference numerals: the ventilating fan 1 of convertible fan blade; Protecgulum 2; Upper body 3,311,312; Positioning hole 301,501; Screw perforation 302,502; Combined vanes 4; Locating column 401; Locking perforation 402; Blade 403; Following body 5,511,512; Set screw 6; Locking nut 61; Weight stack 63; Rotating shaft 7; Rotating shaft belt pulley 8; Drive motor 9.

Embodiment

As shown in Figure 1 to Figure 3, the utility model is by a protecgulum 2, a upper body 3, the box-like fan blade 4 of array, once body 5, number set screw 6 and number locking nut 61 are formed; Wherein a upper body 3 is established in these protecgulum 2 belows, upper body 3 outer rim end faces cutter is established several positioning holes 301, by positioning hole 301 locating column 401 of this combined vanes 4 is placed in wherein, reach combined vanes 4 and be positioned function in the upper body 3, cut a hole respectively in positioning hole 301 both sides again and establish screw perforation 302, to reach the function that this set screw 6 penetrates, establish the box-like fan blade 4 of array in these upper body 3 belows again, wherein on this combined vanes 4, the lower end surface extends a locating column 401, to reach the positioning hole 301 that locating column 401 snaps in this body 3 and following body 5, function in 501 (as shown in Figure 4), these locating column 401 both sides are cut a hole respectively and are established a locking perforation 402 again, by this locking perforation 402, then reach the function that set screw 6 penetrates, body 5 is established in combined vanes 4 belows, this time body 5 outer rim end faces cutter is established several positioning holes 501, and cut a hole respectively in positioning hole 501 both sides and to establish screw perforation 502, this screw bore a hole 502 inside wear one the location screw 6, and this set screw 6 penetrates the screw perforation 402 of combined vanes then, penetrate the screw perforation 302 of this upper body 3 again, and with locking nut 61 with set screw 6 locking location, reach then upper body 3, combined vanes 4 reaches body 5 locking all-in-one-piece functions down.

In addition, can install Weight stack 63 (as shown in Figure 4) between this locking nut 61 and set screw 6 additional, the ventilating fan 1 that can work as this convertible fan blade is locked in (as shown in Figure 5) in the rotating shaft 7, again via rotating shaft belt pulley 8, drive motor 9, and, reach the running equilibrium function of each blade by this Weight stack 63.

The ventilating fan 1 of this convertible fan blade can reach the function (as Fig. 6, shown in Figure 7) of body 511,512 down according to the different upper body 311,312 of different needs assemblings, combined vanes 4, can reach the requirement of different exhaust air rates then.

Mode of execution of the present utility model provides the screw perforation 402 that this set screw 6 penetrates combined vanes then, penetrate the screw perforation 302 of this upper body 3 again, and with locking nut 61 with set screw 6 locking location, reach then upper body 3, combined vanes 4 and body 5 locking all-in-one-piece functions down; Again this locking nut 61 and set screw 6 between can install Weight stack 63 additional, can reach the running equilibrium function of each blade.

Below the utility model and conventional art are compared:

Conventional art

1, this ventilating fan is one of the forming, if when needing higher exhaust air rate, then needs in addition The more ventilating fan of outer purchase blade.

2, when blade when making, as because of each blade vary in weight and each leaf position in the spacing in axle center When uneven, then when running, the imbalance that rotates easily produces noise then, when serious, also can Can make the blade abrasion of axis and rupture.

The utility model

1, set screw penetrates the screw perforation of combined vanes then, penetrates the screw perforation of this upper body again, and with locking nut the set screw locking is located, and reaches then upper body, combined vanes are reached body locking all-in-one-piece function down.

2, can cooperate the adjustment of Weight stack, reach the balance that ventilating fan rotates then.

3, can reach body down according to the different upper body of different needs assemblings, combined vanes.

Claims

1, a kind of ventilating fan structure of convertible fan blade is by a protecgulum, a upper body, the box-like fan blade of array, once body, number set screws and several locking nuts are formed;

It is characterized in that, a upper body is established in the protecgulum below, upper body outer rim end face cutter is established several positioning holes, cut a hole respectively in the positioning hole both sides again and establish screw perforation, wherein on this combined vanes, auspicious face extends a locating column down, these locating column both sides are cut a hole respectively and are established a locking perforation, body is established in the combined vanes below, this time body outer rim end face cutter is established several positioning holes, and cut a hole respectively in the positioning hole both sides and to establish screw perforation, this screw perforation inside wears a location screw, and this set screw penetrates the screw perforation of combined vanes then, penetrate the screw perforation of this upper body again, and the set screw locking is located with locking nut.

2, the ventilating fan structure of convertible fan blade as claimed in claim 1 wherein installs Weight stack additional between this locking nut and the set screw.