CN2484421Y

CN2484421Y - Rotation-impact generating apparatus

Info

Publication number: CN2484421Y
Application number: CN 01229773
Authority: CN
Inventors: 黄琼瑶
Original assignee: Yujing Zhanye Co ltd
Current assignee: Risun Expanse Corp
Priority date: 2001-07-06
Filing date: 2001-07-06
Publication date: 2002-04-03
Anticipated expiration: 2011-07-06

Abstract

The utility model relates to a rotatory kinetic energy generating device, which comprises a fixed magnetic pole element, a rotating element which is sleeved and arranged on the fixed magnetic pole element and a binding element which is used for combining the rotating element and the fixed magnetic pole element; the fixed magnetic pole element is provided with a plurality of magnetic poles; an internal ring of the rotating element is provided with a permanent magnet and a perforative shaft hole is arranged at the center position of the rotating element and a bearing is arranged in the shaft hole; a connecting element penetrates the bearing and is fixed on the fixed magnetic pole element. When the fixed magnetic pole element makes the magnetic poles generate the magnetic force through the current, the magnetic pole and the rotating element repel each other so as to make the rotating element generate the rotatory kinetic energy and the connecting element does not rotate together with the rotating element.

Description

The rotation function generation device

Technical field

The utility model relates to a kind of rotation function generation device, refer in particular to a kind of device of forming by fixed magnetic pole element, rotatable member and binding member, as Brushless DC motor, brushless DC fan, the brush d.c. motor is arranged, brush DC fan, brushless ac motor, brushless ac fan are arranged, the brush alternating current motor is arranged, the motor of brush ac fan etc. in order to the output rotation function arranged.

Background technique

Conventional brushless DC fan is as seen shown in Figure 1A and Figure 1B, it mainly is made up of shell, stator and rotor, wherein stator is arranged at the bottom of shell, and stator has a circuit board and is arranged at several magnetic poles that are made of the coil winding on the circuit board, and the central authorities of stator are formed with a perforation; Rotor includes a portion and several and is arranged at blade outside the portion, is equipped with permanent magnet in the tube portion, and is provided with an axostylus axostyle in the center; Rotor is enclosed within the magnetic pole of stator with tube portion, and axostylus axostyle inserts and passes in the perforation simultaneously, and the bottom of axostylus axostyle is provided with chase, utilizes a cramp to be inserted in the chase, and axostylus axostyle can't be broken away from; When electric current by coil, magnetic pole can produce magnetic force and with the permanent magnet mutual exclusion of rotor, make rotor produce rotation function, and produce wind-force by blade; And general being applied to as producing in the electronic equipment of heat energy in the work such as desktop computer, notebook computer, power supply unit, electronic instrument of this kind brushless DC fan, sink as electronic equipment, above-mentioned brushless DC fan structure is found in the U.S. the 5th, 997, No. 183 patent cases (shown in Figure 1) and the U.S. the 6th as it, 097, No. 120 patent case (shown in Figure 2) as it.

The axostylus axostyle of above-mentioned brushless DC fan structure rotor is to pass stator and utilize a cramp to fasten axostylus axostyle, rotor is incorporated on the stator, make rotor unlikely and stator disengaging in rotatablely moving, axostylus axostyle also rotates with the work rotor together simultaneously: because rotor is to utilize axostylus axostyle to combine with stator, load when a little deflection of axostylus axostyle all can increase the rotor rotation, produce noise and vibration simultaneously, for improving the running usefulness of rotor, and avoid motor to produce noise and vibration, axostylus axostyle must be straight be arranged in the stator, therefore in the perforation of stator, be equipped with a sleeve, sleeve inner has smooth surface, and respectively is provided with a bearing (as Figure 1A in two ends of sleeve, shown in Figure 1B), the axostylus axostyle of rotor is to pass bearing, utilize bearing to support the straight setting of axostylus axostyle, and reduce the frictional force when rotating; In order to ensure straight being arranged on the stator of axostylus axostyle, in the process of producing, the accurate tolerance of size on the coupling between control sleeve, two bearings and axostylus axostyle also because the accurate requirement of matching size tolerance, makes in the process of production to have certain disqualification rate.

Moreover, brushless DC fan is to be disposed at as desktop computer, in the electronic equipments such as notebook computer, its volume is little usually, and desktop computer or more and more miniaturization of notebook computer at present, the volume of brushless DC fan also dwindles with work, all elements that constitute brushless DC fan also dwindle, as mentioned above, combine for guaranteeing that axostylus axostyle is provided with as the crow flies with stator, in the stator sleeve must be set, two elements such as bearing need be offered chase in the bottom of axostylus axostyle simultaneously, and organize with this element of cramp and to buckle, so many element except increasing cost of production, and has increased the step of production process, and each size of component is all very little, in the action of assembling and be not easy, but also to accurately control each interelement coupling tolerance, more increased the possibility of product disqualification rate.

In order to solve the above problems, then there is manufacturer that two above-mentioned bearings are changed into a bigger bearing, and be arranged at the sleeve middle section (as the U.S. the 6th, 000, No. 919 patent case Fig. 1), so can reduce by a bearing, yet the purpose of design of two bearings is the area of contact that are to reduce bearing and axostylus axostyle, makes frictional force less, reduce by an element though change into a bearing, but for firmly supporting axostylus axostyle, bearing must strengthen, that is the area of contact of bearing and axostylus axostyle strengthens, frictional force is increased, increase the load of rotor rotation, and the increase of noise volume, therefore such design is also incorrect.

No matter be the design of two bearings or the design of a bearing in addition,, axostylus axostyle is to pass through stator and with work rotor rotation in the lump, for reducing the frictional force between axostylus axostyle and bearing, axostylus axostyle is that metal material is to grind to form smooth surface, yet the axostylus axostyle of metal material is to pass stator and with work rotor rotation in the lump, that is axostylus axostyle is to be arranged in the magnetic field that stator produces, can influence magnetic field during the axostylus axostyle rotation, magnetic field also can influence the rotation of axostylus axostyle, thereby causes noise (axostylus axostyle rotation disturbing magnetic field produces), the problems such as (influence of magnetic field axostylus axostyles) of pausing.

Again, Taiwan the 409798th patent announcement case proposes a kind of " the impeller joint structure of super-thin small heat-dissipating fan ", this patent case is for solving the problem of friction rotor, disclosed by the outstanding axostylus axostyle of stator, rotor directly is placed on the axostylus axostyle and rotates, and the area that the design that utilizes circular cone is reduced friction, this patent case has perhaps overcome axostylus axostyle and has been inserted into the problem that is produced in the stator, yet as previously mentioned, for Brushless DC motor is rotated smoothly, each interelement tolerance of size must be quite accurate, this patent case adopts the design of circular cone for the area that reduces contact, yet when reducing area of contact, also makes and produce certain clearance between axostylus axostyle and rotor, and this gap promptly makes rotor produce deflection easily, increases the load of rotor rotation on the contrary and makes the increase of noise volume.

Summary of the invention

Order of the present utility model is to propose a kind of rotation function generation device of being made up of shell, fixed magnetic pole element, rotatable member and binding member, it has the minimizing element, simplify production technology, and reduce the disqualification rate of product, thereby solved the existing in prior technology problem.

The technological scheme that the utility model adopted is that it includes:

One fixed magnetic pole element, it is made of several magnetic poles, has a joining hole on this fixed magnetic pole element;

One rotatable member, it is placed on this fixed magnetic pole element with rotatable relation, and is equipped with permanent magnet in this rotatable member, and this rotatable member is provided with at least one bearing to being provided with an axis hole that runs through in the joining hole place in this axis hole;

One binding member, it passes this bearing by this axis hole of this rotatable member, and is bonded on the joining hole of this fixed magnetic pole element, makes this rotatable member be bonded to this fixed magnetic pole element, and this rotatable member is an axle center output spinfunction with this binding member.

Characteristics of the present utility model are: it can reduce rotatable member and be bonded to the required spare part of fixed magnetic pole element, simplify production process, reduce production costs, simultaneously easy assembling process also can reduce artificial mistake, reduce the disqualification rate of product, moreover link component not can with rotatable member rotation in the lump, so link component and fixed magnetic pole interelement can't interfere with each other, and reduces the possibility that noise and vibration take place.

Description of drawings

Figure 1A and Figure 1B are known brushless DC fan structural representation;

Fig. 2 forms schematic representation for the utility model structure;

Fig. 3 is a structural profile schematic representation of the present utility model;

Fig. 4 A and Fig. 4 B are that of the present utility model another implemented illustration;

Fig. 5 A and Fig. 5 B are that the utility model fork one is implemented illustration.

Embodiment

According to the rotation function generation device that the utility model disclosed, for example Brushless DC motor, brushless DC fan, the brush d.c. motor is arranged, brush DC fan, brushless ac motor, brushless ac fan are arranged, the brush alternating current motor is arranged, the motor in order to the output rotation function such as brush ac fan is arranged, further specify preferred embodiment of the present utility model below in conjunction with above-mentioned each accompanying drawing, with the brushless DC fan is example, but is not limited to brushless DC fan.

As shown in Figures 2 and 3, according to the rotation function generation device that the utility model disclosed, it is by a shell 10, a fixed magnetic pole element 20; One rotatable member 30 and a binding member 40 are formed.

Shell 10 has a containing space 11, one end openings at least, and the other end has a supporting base 12.

Fixed magnetic pole element 20 is arranged on the supporting base 12 of shell 10, it has by coil 21 and is wound in formed several magnetic poles 23 on the silicon steel sheet 22, after electric current passed through, coil 21, magnetic pole 23 can produce magnetic force (this part is a known technology, and the utility model no longer more to be given unnecessary details).Have a joining hole 24 in fixed magnetic pole element 20 central position, joining hole 24 is a screw.

Rotatable member 30 is to be placed on the fixed magnetic pole element 20 with rotatable relation, it includes a portion 31 and several are arranged at the blade 32 of a portion 31 peripheries, be equipped with permanent magnet 33 in the tube portion 31, rotatable member 30 is placed on the fixed magnetic pole element 20, the magnetic pole 23 of permanent magnet 33 corresponding fixed magnetic pole elements 20 when magnetic pole 23 produces magnetic force, promptly repels each other with permanent magnet 33, make rotatable member 30 output rotation functions (this part is a known technology, and the utility model no longer more to be given unnecessary details).Wherein be provided with the axis hole 311 that runs through at tube portion 31 center positions, be provided with a bearing 50 in the axis hole 311, rotatable member 30 is placed on the fixed magnetic pole element 20, the joining hole 24 of axis hole 311, bearing 50 corresponding fixed magnetic pole elements 20.

Binding member 40 is a screw, it has the head end 41 and the body of rod 42, head end 41 can rotate for instrument sockets such as screwdrivers, the body of rod 42 has spiro tooth part 421 and smooth department 422, rotatable member 30 is placed on the fixed magnetic pole element 20, make axis hole 311, the joining hole 24 of bearing 50 corresponding fixed magnetic pole elements 20, binding member 40 is by axis hole 311, bearing 50 passes, the spiro tooth part 421 of binding member 40 bodies of rod 42 screws in the joining hole 24, smooth department 422 contacts with 50 on bearing, utilize that head end 41 restriction bearing 50 is unlikely to be dropped out by axis hole 311, and rotatable member 30 is bonded on the fixed magnetic pole element 20.The body of rod 42 of above-mentioned binding member 40 is made of smooth department 422 and spiro tooth part 421, also can attack thread with putting in order strut members 42 cars, contacts with bearing 50 lines with thread.

Binding member 40 is the joining holes 24 that are bonded to fixed magnetic pole element 20 in the mode that screws togather, and rotatable member 30 is to contact by 40 of bearing 50 and binding members, and be axle center rotation with binding member 40, therefore when rotatable member 30 rotations, binding member 40 not can with rotatable member 30 rotation in the lump, make binding member 40 and fixed magnetic pole element 20 close and can't interfere with each other.

Moreover, the utility model utilizes binding member 40 directly rotatable member 30 to be bonded on the fixed magnetic pole element 20, saved known brushless DC fan must sleeve and a bearing, reduce required spare part, promptly reduce and produce required cost, also simplified production procedure simultaneously, and binding member 40 is quite simple and easy with the action that rotatable member 30 is bonded to 20 assemblings of fixed magnetic pole element, can reduce artificial mistake by simple action, also can significantly reduce the disqualification rate of product.

Shown in Fig. 4 A, Fig. 4 B, it is another mode of execution of the utility model, wherein between bearing 50 and axis hole 311 bottoms, can install a reed 60, reed 60 can give bearing 50 certain application of force, the relative application of force when making bearing 50 can bear rotatable member 30 rotations, and absorb the matched size tolerance, more smooth-going in the time of more keeping rotatable member 30 rotations.

Shown in Fig. 5 A, Fig. 5 B, it is the another mode of execution of the utility model, the axostylus axostyle 25 that one fixed vertical makes progress wherein is set on fixed magnetic pole element 20, axostylus axostyle 25 nearly upper edges are provided with a chase 251, rotatable member 30 is inserted in axostylus axostyle 25 with axis hole 311, between rotatable member 30 bottoms and fixed magnetic pole element 20 tops, several balls 70 or plane bearing (not shown) can be set, so as to supporting rotatable member 30 and reducing the two frictional force; Bearing 50 is inserted in axis hole 311, gets the chase 251 that a cramp 80 fastens axostylus axostyle 25 apical margins, and the unlikely axis holes 311 of bearing 50 are broken away from, by present embodiment, during rotatable member 30 rotations, axostylus axostyle 25 also not can with rotatable member 30 rotation in the lump.

Above-described, only be the utility model preferred embodiment wherein, be not to be used for limiting practical range of the present utility model; Be that all equivalences of being done according to the utility model claims scope change and modification, be all the utility model claims protection domain and contain.

Claims

1. rotation function generation device is characterized in that it includes:

One binding member, it passes this bearing by this axis hole of this rotatable member, and is bonded on the joining hole of this fixed magnetic pole element.

2. rotation function generation device as claimed in claim 1 is characterized in that it also includes a shell, and this shell has a containing space that is installed with this fixed magnetic pole element and this rotatable member.

3. rotation function generation device as claimed in claim 2 is characterized in that described shell, and it also includes a supporting base for this fixed magnetic pole element setting.

4. rotation function generation device as claimed in claim 1 is characterized in that described joining hole, and it is a screw.

5. rotation function generation device as claimed in claim 1 is characterized in that described rotatable member, and it is made up of tube portion and several blades that is arranged at this outer rim.

6. rotation function generation device as claimed in claim 1 is characterized in that described binding member, and it is a screw.

7. rotation function generation device as claimed in claim 6 is characterized in that described binding member, and it includes the head end and the body of rod.

8. rotation function generation device as claimed in claim 7 is characterized in that the described body of rod, and it has the spiro tooth part that can screw in this joining hole, and the smooth department that contacts with this bearing surface.

9. rotation function generation device as claimed in claim 7 is characterized in that the described body of rod, and its car has been attacked thread.

10. rotation function generation device as claimed in claim 1 is characterized in that described bearing, also includes a reed between it and this axis hole bottom.

11. rotation function generation device as claimed in claim 1 is characterized in that described fixed magnetic pole element, on it axostylus axostyle can be set, this axostylus axostyle can pass this bearing of this rotatable member.

12. rotation function generation device as claimed in claim 11 is characterized in that described axostylus axostyle, its apical margin is provided with a chase, and this chase can have a cramp to fasten.

13. rotation function generation device as claimed in claim 11 is characterized in that described fixed magnetic pole element, is provided with several balls between its top and this rotatable member bottom.

14. rotation function generation device as claimed in claim 11 is characterized in that described rotatable member, is provided with plane bearing between its bottom and this fixed magnetic pole element top.