WO2012094845A1

WO2012094845A1 - Special motor for spray gun

Info

Publication number: WO2012094845A1
Application number: PCT/CN2011/071593
Authority: WO
Inventors: 周豪威; 黄利军
Original assignee: 奉化市威优特电器有限公司
Priority date: 2011-01-12
Filing date: 2011-03-07
Publication date: 2012-07-19
Also published as: CN201956807U

Abstract

A special motor for a spray gun comprises a motor shaft (7), a rotor (8) and fan blades (3) both disposed on the motor shaft (7), a stator (5) disposed opposite to the rotor (8), an exhaust ring (2) and a brush bracket (9). The rotor (8) is disposed at the side of the air-intake surface of the fan blades (3). Bearings (6) are fixed on both ends of the motor shaft (7) respectively. Bearing blocks (11) are disposed on both of the exhaust ring (2) and the brush bracket (9). The bearing (6) arranged at the side of the exhaust surface of the fan blades (3) is fixed in the bearing block (11) of the exhaust ring (2), and the bearing (6) arranged on the outer end of the rotor (8) is fixed in the bearing block (11) of the brush bracket (9). In the special motor for a spray gun, the stator (5) and the rotor (8) are arranged at the side of the air-intake surface of the fan blades (3), in other words, the stator (5) and the rotor (8) are disposed in air inlets, so that the stator (5) and the rotor (8) are cooled forcedly by cold blast, which improves the effect of heat elimination and increases the service life.

Description

Special motor for spray gun

Technical field

The utility model relates to the technical field of electric motors, in particular to a special motor for a spray gun. Background technique

The gun motor is one of the most important parts of the gun, and its quality directly determines the quality of the gun. The motor of the existing spray gun generally borrows a vacuum cleaner motor, which is mainly composed of a fixed rotor assembly, a vane and an end cover provided with both ends, and the vane is generally disposed in front of the stator and rotor assembly, that is, the stator and rotor assembly is disposed on the vane. The leaf surface, that is to say, the wind is sucked into the motor by the wind blade, and then blown to the structure of the stator and rotor assembly. Such a structural arrangement is not conducive to the heat dissipation of the stator and rotor, and the heat dissipation is not smooth, which seriously affects the quality of the motor and has a short service life. Therefore, it is a hot spot to study a kind of spray gun motor with good heat dissipation effect, superior quality and longer service life. Utility model content

The purpose of the utility model is to provide a special motor for a spray gun with simple and compact structure and good heat dissipation effect in view of the deficiencies of the prior art.

In order to achieve the above object, the utility model adopts the following technical solutions:

The utility model relates to a special motor for a spray gun, which comprises a motor shaft, a rotor and a fan blade which are sleeved on the motor shaft, a stator corresponding to the rotor, an air outlet ring and a carbon brush holder; the rotor is arranged on the fan blade. a wind bearing side, a bearing is fixed to each end of the motor shaft, and the bearing ring is disposed on the air outlet ring and the carbon brush bracket, and the bearing disposed on the air outlet side of the wind blade is fixed to the air outlet ring. In the bearing housing, the bearing disposed at the outer end of the rotor is fixed in the bearing seat of the carbon brush holder.

The utility model further comprises a collecting hood, wherein the two sides of the collecting hood are respectively provided with a first receiving cavity and a second The first receiving cavity and the second receiving cavity are connected to each other; the vane is disposed in the first receiving cavity, and the stator is disposed in the second receiving cavity.

Further, the surface of the stator is provided with a plurality of grooves, and the inner wall of the second receiving cavity is correspondingly provided with a plurality of cams, and the size and shape of the grooves match the size and shape of the concavities.

Further, the air outlet ring is provided with a plurality of spiral air ducts.

The utility model has the beneficial effects that: the utility model changes the structure mode of the conventional motor that the stator and rotor assembly is arranged on the air outlet side of the wind blade, and the stator and rotor assembly is arranged on the air inlet side of the wind blade, that is, the stator and rotor assembly It is installed in the air inlet, which can perform forced cooling of the stator and rotor assembly, and the heat dissipation effect is greatly improved, which greatly improves the service life of the utility model. DRAWINGS

1 is a schematic view of an exploded structure of the present invention.

In the figure: 1, screw, 11, bearing housing,

2, the outlet ring, 21, the air duct, 22, the screw hole,

3, wind blade, 31, shaft hole,

4, the collecting hood, 41, the second receiving cavity, 42, the card convex,

5, stator, 51, groove,

6, the bearing,

7, the motor shaft,

8, the rotor,

9, carbon brush bracket, 91, screw pin fixing hole

10, screw detailed description

The utility model will be further described below with reference to the accompanying drawings:

As shown in FIG. 1 , the utility model relates to a special motor for a spray gun, which comprises a motor shaft 7 , a rotor 8 and a fan blade 3 sleeved on the motor shaft 7 , a stator 5 corresponding to the rotor 8 , an air outlet ring 2 and Carbon brush holder 9. The motor shaft 7, the rotor 8, the stator 5, the fan blade 3, the air outlet ring 2 and the carbon brush holder 9 constitute the basic structure of the utility model, and can be made of metal or plastic material in time, and of course, considering the utility model The strength is required. At present, the above main components are mostly made of metal materials.

As a main innovation of the utility model, the wind blade 3 is sleeved on the motor shaft 7 through the shaft hole 31, the rotor 8 is disposed on the air inlet side of the wind blade 3, and the stator 5 and the rotor 8 are arranged correspondingly. That is, the present invention sets the stator and rotor assembly (stator 5 and rotor 8) on the air inlet side of the blade 3, whereas the conventional motor generally has the stator and rotor assembly on the air outlet side of the blade 3. Compared with the prior art, the heat dissipation effect of the utility model is better, and the wind blade 3 can better remove the heat generated during the working process of the stator and rotor assembly (the stator 5 and the rotor 8) by entering the cold air entering the utility model. , stronger than the traditional motor's hair dryer.

A bearing 6 is respectively fixed to the two ends of the motor shaft 7, and the bearing ring 1 is respectively disposed on the air outlet ring 2 and the carbon brush holder 9. The bearing 6 is disposed on the air outlet side of the blade 3 The bearing 6 provided at the outer end of the rotor 8 is fixed in the bearing housing 11 of the air outlet ring 2, and is fixed in the bearing housing 11 of the carbon brush holder 9. The air outlet ring 2 is disposed on the air outlet side of the wind vane 3, and can generate a good air guiding effect on the wind blown by the wind vane 3, thereby further enhancing the air guiding effect. The air outlet ring 2 is provided with a plurality of spiral air ducts 21, which mainly function to change the wind direction.

As another major innovation of the present invention, the present invention further includes a collecting hood 4, and the two sides of the collecting hood 4 are respectively provided with a first receiving cavity (not shown) and a second receiving cavity 41. , said The first receiving chamber and the second receiving chamber 41 are in communication; the vane 3 is disposed in the first receiving chamber, and the stator 5 and the rotor 8 are both disposed in the second receiving chamber 41. The air outlet ring 2 is fixed to one end of the windshield 4 by a screw 1 and a screw hole 22 provided therein.

The windshield 4 of the utility model has the function of accumulating wind power, and can not only enhance the wind-driven effect of the wind blade 3, but also enhance the wind-out effect of the wind blade 3. In the case of the same motor power, the heat dissipation effect and the air outlet effect of the utility model are better.

The surface of the stator 5 is provided with a plurality of grooves 51. The inner wall of the second receiving cavity 41 is provided with a plurality of engaging protrusions 42. The size and shape of the grooves 51 match the size and shape of the engaging projections 42. That is, the stator 5 of the present invention is fixedly coupled to the windshield 4 by the cooperation of the groove 51 and the cam 42. The fixed connection of the blades 3 to the motor shaft 7 can also be effected in the same or similar manner.

The carbon brush holder 9 is fixedly coupled to the stator 5 and the hood 4 by a screw pin 10 and a screw pin fixing hole 91 provided thereon.

The utility model modifies the structure mode in which the conventional motor sets the stator and rotor assembly on the air outlet side of the wind blade, and the stator and rotor assembly (the stator 5 and the rotor 8) are arranged on the air inlet side of the wind blade 3, that is, the stator and rotor are also to be fixed. The component is arranged at the air inlet, so that the cold rotor forced cooling can be performed on the stator and rotor assembly, and the heat dissipation effect is greatly improved, thereby greatly improving the service life of the utility model.

The above description is only a preferred embodiment of the present invention, and equivalent changes or modifications made to the structures, features and principles described in the scope of the present patent application are included in the scope of the present patent application. .

Claims

Claim

1. A special motor for a spray gun, characterized in that it comprises a motor shaft (7), a rotor (8) and a fan blade (3) sleeved on the motor shaft (7), and a stator corresponding to the rotor (8) (5), the air outlet ring (2) and the carbon brush bracket (9); the rotor (8) is disposed on the air inlet side of the wind blade (3), and the two ends of the motor shaft (7) are respectively fixed a bearing (6) is disposed on the bearing (6), the air outlet ring (2) and the carbon brush bracket (9), and the bearing (6) disposed on the air outlet side of the blade (3) is fixed to the bearing (6) In the bearing housing (11) of the air outlet ring (2), the bearing (6) provided at the outer end of the rotor (8) is fixed in the bearing housing (11) of the carbon brush holder (9).

2. The motor for a spray gun according to claim 1, further comprising: a collecting hood (4), wherein the two sides of the collecting hood (4) are respectively provided with a first receiving cavity and a second receiving cavity (41), the first receiving cavity and the second receiving cavity (41) are in communication; the fan blade (3) is disposed in the first receiving cavity, and the stator (5) is disposed in the second receiving cavity (41) Inside.

3. A motor for a spray gun according to claim 2, wherein the surface of the stator (5) is provided with a plurality of grooves (51), and corresponding openings on the inner wall of the second receiving chamber (41) There are a plurality of card protrusions (42), and the size and shape of the grooves (51) match the size and shape of the card protrusions (42).

4. A motor for a spray gun according to any of claims 1-3, characterized in that: the outlet ring (2) is provided with a plurality of spiral ducts (21).