CN209419415U - A kind of small-sized fan - Google Patents

Abstract

The utility model provides a kind of small-sized fan, including housing unit, rotor assembly, bearing, retaining ring, gasket and spring, and the housing unit includes stator module and shell；The rotor assembly, bearing, retaining ring, gasket and spring are located at enclosure interior, and the middle part of the housing unit connects bearing with spring by retaining ring, gasket, rotor assembly is connected outside the bearing；The shell and stator module interference fit；The stator module includes stator and circuit board assemblies, the stator and circuit board assemblies clearance fit.The utility model is simplex winding structure, and the resistance of the winding of blower is bigger, and the electric current in blower operation process is smaller；The counter electromotive force of the winding of blower is bigger, and the revolving speed of blower is higher.

Description

A kind of small-sized fan

Technical field

The utility model relates to DC fan technical field, specifically a kind of small-sized fan.

Background technique

Domestic small-sized fan is mostly that the additional pull-up resistor driving of two-wire winding construction or simplex winding utilize three at present Pole pipe or transistor build the structure that driving circuit is driven, and only winding is powered all the way when double-winding structure works, simultaneously It also needs to add a pull-up resistor for driving blower, reduces the counter electromotive force of blower, reduce the efficiency of blower；Miniature wind Machine inner space is limited, by triode and transistor build driving circuit in the way of can occupy very large space.Gu and to existing Some blower driving methods improve.

Utility model content

Aiming at the defects existing in the prior art, the technical problem to be solved by the present invention is to provide one kind Small-sized fan.

The utility model technical solution used for the above purpose is: a kind of small-sized fan, including housing unit, Rotor assembly, bearing, retaining ring, gasket and spring, the housing unit include stator module and shell；The rotor assembly, axis Hold, retaining ring, gasket and spring are located at enclosure interior, the middle part of the housing unit connects bearing with spring by retaining ring, gasket, Rotor assembly is connected outside the bearing；The shell and stator module interference fit；The stator module includes stator and circuit Board group part, the stator and circuit board assemblies clearance fit.

The stator and circuit board assemblies are fixed by viscose glue.

The stator includes skeleton component and the winding that is wrapped on skeleton component.

The rotor assembly includes rotor and magnetic stripe, and the rotor and magnetic stripe are bonded.

The circuit board assemblies include the Hall part for the pole N in inductiopn rotor component and the reversal of magnetism of the pole S, the circuit Board group part is fixed with case bonding.

No. 1 pin of the Hall part connects positive pole, No. 2, No. 3 pins connect two leading-out terminals of winding respectively, No. 4 are drawn Foot ground connection.

The utility model have the following advantages that and the utility model has the advantages that

1, the utility model is simplex winding structure, and the resistance of the winding of blower is bigger, and the electric current in blower operation process is more It is small；The counter electromotive force of the winding of blower is bigger, and the revolving speed of blower is higher.

2, the utility model can directly be driven by Hall part, be no longer needed to make between winding and power supply plus pull-up resistor Drive or built driving circuit with triode, transistor and driven, more spaces can be saved, thus can pass through Addition electronic device is that blower adds more functions, such as adds diode and increases anti-reflection function, increases chip microcontroller blower Control etc..

3, the utility model is widely used in small-sized fan field.

Detailed description of the invention

Fig. 1 is the overall structure figure of the utility model；

Fig. 2 is the housing unit structure chart of the utility model；

Fig. 3 is the stator member structure figure of the utility model；

Fig. 4 is the stator structure figure of the utility model；

The rotor assembly of Fig. 5 the utility model and the structure chart of circuit board assemblies；

Fig. 6 is the circuit diagram of the circuit board assemblies of the utility model.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and embodiments.

As shown in Figure 1, comprising: housing unit 1, rotor assembly 2, bearing 3, retaining ring 4, gasket 5, spring 6 are constituted.Such as Fig. 2 Shown, housing unit 1 is made of stator module 7 and shell 8.Rotor assembly 2, bearing 3, retaining ring 4, gasket 5 and spring 6 are located at shell Inside body 8, the middle part of the housing unit 1 connects bearing 3 by retaining ring 4, gasket 5 and spring 6, and connection turns outside the bearing 3 Sub-component 2；The shell 7 and stator module 7 are interference fitted；Housing unit 1 and rotor assembly 2 guarantee coaxially, to lead to by bearing 3 Crossing retaining ring 4 and spring 6 prevents the abjection in movement of rotor assembly 2, and guarantees that rotor assembly 2 and circuit board assemblies 10 axially have The gap of 0.2mm-0.4mm.

As shown in figure 3, stator module 7 is made of stator 9 and circuit board assemblies 10；Stator 9 and circuit board assemblies 10 are small Clearance fit is fixed by viscose glue.

As shown in figure 4, stator 9 is made of skeleton component 11 and winding 12, winding 12 is wrapped on skeleton component 11.

As shown in figure 5, rotor assembly 2 includes rotor 13 and magnetic stripe 14, the rotor 13 and magnetic stripe 14 are bonded.

As shown in fig. 6, blower is directly driven by Hall part, Hall part uses CC6402.No. 1 pin of Hall part connects electricity Source anode, No. 2, No. 3 pins connect two leading-out terminals of winding 12, No. 4 pins ground connection respectively；The N that Hall part passes through inductiopn rotor Pole and the reversal of magnetism of the pole S export low and high level in No. 2 pins and No. 3 pins respectively, generate forward current or anti-in the windings The magnetic field and rotor field generated to electric current, winding interacts, and generates electromagnetic torque, and rotor revolves under the influence of this torque Turn, rotor drives flabellum rotation to generate air flowing, realizes blower function.

During operation, simplex winding whole process remains powered on the blower, space under the same conditions, compare double wrap The alternate energisation mode of group, the winding resistance of simplex winding blower is bigger, and under identical voltage, the electric current in blower operation process is more It is small；Double winding blower needs connect between winding and power supply a pull-up resistor, while the number of turns of the winding of simplex winding blower More, inductance is bigger, thus the counter electromotive force of simplex winding blower is bigger, and under identical voltage, the revolving speed of blower is higher.

The blower can directly be driven by Hall part, comparison by triode or transistor build driving circuit into The driving method of row driving can save more spaces, thus can be that blower is additional more by addition electronic device Function such as adds diode and increases anti-reflection function, increases the control etc. of chip microcontroller blower.The structure and driving of the blower Mode is widely used in small-sized fan field.

Claims (6)

1. a kind of small-sized fan, which is characterized in that including housing unit (1), rotor assembly (2), bearing (3), retaining ring (4), pad Piece (5) and spring (6), the housing unit (1) include stator module (7) and shell (8)；The rotor assembly (2), bearing (3), retaining ring (4), gasket (5) and spring (6) are located at that shell (8) is internal, the middle part of the housing unit (1) by retaining ring (4), Gasket (5) and spring (6) connection bearing (3), the bearing (3) connect rotor assembly (2) outside；The shell (8) and stator pack Part (7) interference fit；The stator module (7) includes stator (9) and circuit board assemblies (10), the stator (9) and circuit board Component (10) clearance fit.

2. a kind of small-sized fan according to claim 1, which is characterized in that the stator (9) and circuit board assemblies (10) It is fixed by viscose glue.

3. a kind of small-sized fan according to claim 1, which is characterized in that the stator (9) includes skeleton component (11) With the winding (12) being wrapped on skeleton component (11).

4. a kind of small-sized fan according to claim 1, which is characterized in that the rotor assembly (2) includes rotor (13) With magnetic stripe (14), the rotor (13) and magnetic stripe (14) bonding.

5. a kind of small-sized fan according to claim 1, which is characterized in that the circuit board assemblies (10) include for feeling The Hall part (15) of the pole N and the reversal of magnetism of the pole S in rotor assembly (2) is answered, the circuit board assemblies (10) are Nian Jie with shell (8) solid It is fixed.

6. a kind of small-sized fan according to claim 5, which is characterized in that No. 1 pin of the Hall part is connecing power supply just Pole, No. 2, No. 3 pins connect two leading-out terminals of winding (12), No. 4 pins ground connection respectively.