CN2417313Y - Heat radiation fan - Google Patents

Abstract

The utility model relates to a heat radiation fan, which is provided with a plastic base, and a shaft pipe is convexly arranged in a containing space of the base. The outside of the shaft pipe is tightly matched and sheathed with a coil assembly, a fan is arranged on the base, and a rotating shaft of the fan is arranged in the shaft pipe. A copper sleeve, a circular plate and a bearing are matched and assembled in the shaft pipe, and the rotating shaft is axially arranged on the copper sleeve and a bearing and can penetrate through a central hole on the circular plate. When the coil assembly is tightly matched with the shaft pipe, the shaft pipe can be compelled to shrink and deform, the deformed shaft pipe can be corrected by the circular plate, so the bearing and the center of the copper sleeve can be in the same line, and the rotating shaft can be conveniently assembled and can run.

Description

Radiation fan

The utility model relates to a kind of radiation fan, particularly relates to a kind of radiation fan that is used for electronic equipment.

General electronic products for example in individual or the notebook computer in order to the fan of heat radiation, because it is little to be subject to the group space of establishing, therefore, the volume of this kind radiation fan is also less, and its flabellum size of the radiation fan of small volume also reduces relatively, in other words, the air output that the radiation fan of small volume will acquire a certain degree removes the heat that electronic products produces enough to loose, and rotating speed at a high speed then must be arranged, also just because of this, the design that is coupling of radiation fan rotating shaft especially seems important.

As shown in Figure 1, cross-sectional schematic for a kind of radiation fan in the past, radiation fan 1 had the pedestal 11 of a plastic material in the past, form a substrate 112 in one containing space 111 of pedestal 11, the prominent central siphon 113 of establishing on substrate 112, close-fitting is set up jointly and is established two elements 12 that are coupling in central siphon 113 again, and these elements 12 that are coupling generally are copper sheathing or bearing, simultaneously the central siphon 113 outside same sheathed coil blocks 13 of drive fit; Establish a fan 14 again in aforementioned containing space 111, a rotating shaft 141 of fan 14 is coupling with two elements 12 that are coupling respectively again, and a magnetic part 142 and coil block 13 corresponding settings; 13 of mat magnetic part 142 and coil blocks produce excitatory effect and make fan 14 runnings.

Continuous please the cooperation consulted Fig. 2, the schematic representation that is coupling and amplifies for a kind of central siphon of radiation fan in the past and fan, during assembling, at first a be coupling element 12 is embedded the end of central siphons 113 away from fan 14, when making coil block 13 drive fits be placed in central siphon 113 reason to increase assembling force not destroyed, group is established coil block 13 in advance before second element 12 that is coupling of assembling, this moment is because central siphon 113 is plastic materials, when with the 13 friction tight whiles of coil block, central siphon 113 can produce irregular interior compression deformation, then, assemble second element 12 that is coupling, because central siphon 113 has produced distortion, the winding design of itself and 12 of the elements of being coupling is drive fit again, the puzzlement that causes the element 12 of being coupling to be difficult for assembling or to damage because of the brute force assembling, even if assembling is finished smoothly, the central position that forms two elements 12 that are coupling most probably is not on same center line, this kind situation is located in two element 12 Hous that are coupling simultaneously in the rotating shaft 141 of fan, can cause two loads that are coupling element 12 countershafts 141 to differ, in running up, rotating shaft 141 easy abnormal wearing and tearing, even make a noise, not only shorten the working life of radiation fan 1 itself, also can influence the quality of electronic products simultaneously.

The purpose of this utility model is to provide a kind of assembling smooth and easy, and smooth-going radiation fan turns round.

The utility model provides a kind of radiation fan, includes a pedestal, a coil block, a fan and an assembly that is coupling, and wherein: this pedestal has a containing space, moulding one substrate in containing space, the prominent central siphon of establishing of this substrate center; This coil block, centre moulding one pipe box, this pipe box are sheathed on the central siphon outside of pedestal; This fan is arranged in the containing space, and has a rotating shaft, and this rotating shaft is arranged in the central siphon; It is characterized in that:

This assembly that is coupling includes a bearing, a circle sheet and a copper sheathing that is mounted on respectively in the central siphon, this circle sheet is between bearing and copper sheathing, this circle sheet and central siphon drive fit and form a mesopore, and copper sheathing is mounted on the end of central siphon away from fan, the rotating shaft of this fan be located in bearing in regular turn and pass the circle sheet mesopore and be coupling in copper sheathing.

During assembling, mat circle sheet group is established the interior distortion with the rectification central siphon of what central siphon, and then the winding of sharp what rotating shaft and copper sheathing and bearing.

In sum, radiation fan mat circle sheet of the present utility model is corrected the central siphon of distortion, is beneficial to the assembly of rotating shaft, makes bearing more smooth and easy in assembling, can guarantee that the central point of bearing and copper sheathing is positioned on the same center line, turns round in order to fan shaft simultaneously.

Below by Cui embodiment and accompanying drawing the utility model radiation fan is elaborated, in the accompanying drawing:

Fig. 1 is a kind of generalized section of radiation fan in the past.

Fig. 2 is a kind of central siphon of radiation fan in the past and the fan schematic representation that is coupling.

Fig. 3 is the radiation fan three-dimensional exploded view of the utility model one than Cui embodiment.

Fig. 4 is the radiation fan generalized section of the utility model one than Cui embodiment.

Shown in Fig. 3,4, radiation fan 2 of the present utility model includes a pedestal 3, coil block 4, be coupling an assembly 5 and a fan 6, wherein: pedestal 3 has a ring-side wall face 31, these side wall surface 31 corrals become the inner hollow aspect, establish a substrate 32 among the inside again, and link with side wall surface 31 to count rib 33, and 31 of this substrate 32 and side wall surfaces form a containing space 34, while substrate 32 central projections are established a central siphon 35.Coil block 4 has a circuit substrate 41, and these circuit substrate 41 centre are passed through and empty prominent established a pipe box 42, and pipe box 42 drive fits are sheathed on central siphon 35 outsides of pedestal 3, and pipe box 42 outer surfaces are established several coils 43 again.

The assembly 5 that is coupling includes a bearing 51, a circle sheet 52 and a copper sheathing 53, the three is mounted on central siphon 35 inside away from an end of substrate 32 to the other end by central siphon 35 according to the prostatitis order, aforementioned each assembly is all set up knot jointly with central siphon 35 close-fittings, wherein, form a mesopore 521 greater than bearing 51 internal diameters on the circle sheet 52.

Fan 6 is arranged in the containing space 34, it has a fan seat 61, but the magnetic part 62 that a ring correspondence ring is located at coil 43 outsides is set on fan seat 61, simultaneously establish a rotating shaft 63 towards central siphon 35 directions are prominent, rotating shaft 63 is located in bearing 51 in regular turn, pass the mesopore 521 of circle sheet 52 and be coupling on copper sheathing 53.

During assembling, can earlier copper sheathing 53 be mounted on an end of central siphon 35, again circuit substrate 41 is placed on the central siphon 35 together with pipe box 42 drive fits, Hou central siphon 35 stage casings and tail end organize respectively and establish circle sheet 52 and bearing 51, then the rotating shaft 63 of fan 6 is penetrated central siphon 35 and be coupling with copper sheathing 53, bearing 51 and pass circle sheet 52 mesopore 521 and not with circle sheet 52 touch to, at the same time, the magnetic part 62 of fan 6 is promptly corresponding with coil 43, when excitatory, fan 6 promptly can turn round.

When foregoing circuit substrate 41 and pipe box 42 are placed on the central siphon 35, owing to be friction tight winding relation, compression deformation in central siphon 35 can produce with the person was identical in the past, but the utility model is connected to central siphon 35 inside by circle sheet 52 in the drive fit mode, its effect is that central siphon 35 outside supports of interior compression deformation are corrected back original caliber size, not only help the assembling of bearing 51, the central point position that can keep simultaneously copper sheathing 53 and bearing 51 and then reaches rotating shaft 63 smooth and easy runnings to reduce wear and to reduce effect such as noise on same center line.

Claims (1)

1, a kind of radiation fan includes a pedestal, a coil block, a fan and an assembly that is coupling, and wherein: this pedestal has a containing space, moulding one substrate in containing space, the prominent central siphon of establishing of this substrate center; This coil block, centre moulding one pipe box, this pipe box are sheathed on the central siphon outside of pedestal; This fan is arranged in the containing space, and has a rotating shaft, and this rotating shaft is arranged in the central siphon; It is characterized in that:

This assembly that is coupling includes a bearing, a circle sheet and a copper sheathing that is mounted on respectively in the central siphon, this circle sheet is between bearing and copper sheathing, this circle sheet and central siphon drive fit and form a mesopore, and copper sheathing is mounted on the end of central siphon away from fan, the rotating shaft of this fan be located in bearing in regular turn and pass the circle sheet mesopore and be coupling in copper sheathing.

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