CN210839140U

CN210839140U - BMC plastic-coated BLDC motor with three-pin mounting structure

Info

Publication number: CN210839140U
Application number: CN201922046642.6U
Authority: CN
Inventors: 沈恩明; 林谦元
Original assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Current assignee: HUZHOU NANYANG ELECTRIC-MOTOR CO LTD
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-06-23
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a BMC plastic-coated BLDC motor with a tripod mounting structure, which comprises a motor body, wherein a plastic shell is arranged on the outer side of the motor body, and a mounting part is arranged on the plastic shell and consists of a first mounting foot (1) and two second mounting feet (2); the novel bearing is characterized in that a first shaft hole (3) is formed in the first mounting foot (1), the length of the first mounting foot (1) is 40-60mm, a second shaft hole (4) is formed in the second mounting foot (2), and the length of the second mounting foot (2) is 15-25 mm. The utility model has the advantages of the cost is lower, can reduce other components and parts and arrange the degree of difficulty and the noise is difficult to the grow.

Description

BMC plastic-coated BLDC motor with three-pin mounting structure

Technical Field

The utility model belongs to the BMC that drum type washing machine used moulds the BLDC motor field, especially relates to a BLDC motor is moulded to tripod mounting structure's that drum type washing machine used BMC package.

Background

The BMC plastic-coated BLDC motor (short plastic-coated motor) for the drum washing machine comprises a motor body, wherein a plastic shell is arranged on the outer side of the motor body, an installation part is arranged on the plastic shell, the installation part comprises four installation feet connected with the body, and the installation feet are used for being fixed with a shell of the washing machine. The installation foot on the motor is moulded to current package is more in quantity, arouses following problem: firstly, the material consumption is high, so that the cost of the motor is increased; secondly, the complexity of the plastic shell structure is high, demoulding is difficult in the injection molding process, the mould structure needs to be optimized for facilitating demoulding, a mould with high complexity is used, the mould cost is high, and the cost of the plastic-coated motor is increased; thirdly, the workers can complete the fixing work of the plastic-coated motor only by reserving a larger installation space for placing the plastic-coated motor and an operation space for the workers to install the plastic-coated motor in the shell of the washing machine, and on the premise that the plastic-coated motor occupies a large amount of installation space and operation space, the arrangement of other components is difficult; fourth, washing machine casing is bulky, produces easily and warp in transportation and storage process, leads to the connecting axle on the washing machine casing to take place to warp easily, and the centre-to-centre spacing between each connecting axle changes, and unable accurate with every installation foot aim at, will wrap and mould the motor and install and can lead to stress to produce behind the washing machine casing, and this stress acts on the package for a long time and moulds the motor, leads to the motor noise grow easily.

Therefore, the existing plastic-coated motor has the defects of higher cost, increased arrangement difficulty of other components and parts and easy noise increase.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a BLDC motor is moulded to tripod mounting structure's BMC package. The utility model has the advantages of the cost is lower, can reduce other components and parts and arrange the degree of difficulty and the noise is difficult to the grow.

The technical scheme of the utility model: BLDC motor is moulded to tripod mounting structure's BMC package, including motor body, motor body's the outside is equipped with the plastic casing, is equipped with the installation department on the plastic casing, the installation department comprises a first installation foot and two second installation feet.

In the BMC plastic-coated BLDC motor with the three-leg mounting structure, the first mounting leg is internally provided with a first shaft hole, the length of the first mounting leg is 40-60mm, the second mounting leg is internally provided with a second shaft hole, and the length of the second mounting leg is 15-25 mm.

In the BLDC motor is moulded to three foot mounting structure's BMC package, still include two external diameters and be less than the axle sleeve in second axle hole, the one end of axle sleeve is equipped with the connecting piece, is equipped with the through-hole on the connecting piece, be equipped with on the second installation foot with screw hole matched with screw hole, the length of axle sleeve is less than the length of second installation foot.

In the BMC plastic-coated BLDC motor with the three-pin mounting structure, the first mounting pin and the second mounting pin are located on the same side of the plastic housing.

Compared with the prior art, the utility model discloses only three installation foot, installation foot quantity is less, consequently possesses following advantage: firstly, the material consumption is less, so that the cost of the motor is reduced; secondly, the complexity of the plastic shell structure is reduced, the plastic shell is easy to demould in the injection molding process, a mold with low complexity can be used for injection molding, the mold cost is low, and the cost of the plastic-coated motor is reduced; thirdly, the size is reduced, the requirement on the installation space is reduced, the three installation feet are positioned on the same side of the plastic shell, workers carry out installation on the same side of the plastic shell, the requirement on the operation space is also reduced, and therefore a larger space can be reserved for arrangement of other components, and the arrangement difficulty of the other components is reduced; fourthly, the shaft sleeve with the outer diameter smaller than the shaft hole is utilized to eliminate the deformation stress caused by the deformation of the shell of the washing machine, so that the noise of the plastic-coated motor is not easy to increase. Therefore, the utility model has the advantages of the cost is lower, can reduce other components and parts and arrange the degree of difficulty and the difficult grow of noise.

Drawings

Fig. 1 is a bottom view of a motor body.

Fig. 2 is a front view of the motor body.

Fig. 3 is a schematic structural view of the bushing.

Fig. 4 is a schematic view of a mounting shaft on the washing machine housing.

Fig. 5 is a schematic view of the assembled motor body and shaft sleeve.

The labels in the figures are: 1-a first mounting foot, 2-a second mounting foot, 3-a first shaft hole, 4-a second shaft hole, 5-a shaft sleeve, 6-a connecting piece, 7-a through hole, 8-a screw hole and 9-a screw hole.

Detailed Description

The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.

Examples are given. The BMC plastic-coated BLDC motor with the three-leg mounting structure comprises a motor body, wherein a plastic shell is arranged on the outer side of the motor body, a mounting part is arranged on the plastic shell, and the mounting part comprises a first mounting leg 1 and two second mounting legs 2.

The first mounting leg 1 is internally provided with a first shaft hole 3, the length of the first mounting leg 1 is 40-60mm, the second mounting leg 2 is internally provided with a second shaft hole 4, and the length of the second mounting leg 2 is 15-25 mm.

Still include two external diameters and be less than the axle sleeve 5 of second shaft hole 4, the one end of axle sleeve 5 is equipped with connecting piece 6, is equipped with through-hole 7 on the connecting piece, be equipped with on the second installation foot 2 with screw hole matched with screw hole 8, the length of axle sleeve 5 is less than the length of second installation foot 2.

The first mounting foot 1 and the second mounting foot 2 are located on the same side of the plastic shell.

The utility model discloses an installation: the washing machine shell is correspondingly provided with a connecting shaft used for being connected with the first mounting foot 1 and the second mounting foot 2, the connecting shaft is a step shaft, the step shaft is integrally formed on the washing machine shell through injection molding, the step shaft is provided with a screw hole 9, and the structure of the connecting shaft is shown in figure 3. The specific installation steps are as follows:

a. the motor body is arranged on a shell of the washing machine, the three connecting shafts respectively and correspondingly penetrate through the first shaft hole 3 and the two second shaft holes 4, the first shaft hole 3 is tightly matched or excessively matched with the corresponding connecting shaft, and a gap is reserved between the second shaft hole 4 and the corresponding connecting shaft. At this time, the bottom surface of the first mounting leg 1 contacts with the step surface of the corresponding connecting shaft, and the bottom surface of the second mounting leg 2 contacts with the step surface of the corresponding connecting shaft.

b. And (3) taking the gasket and the screw, screwing the screw into the screw hole 9 in the first shaft hole 3 after the screw penetrates through the gasket, and fastening the first mounting foot 1 on the corresponding connecting shaft through the gasket by the screw so as to realize the fixation between the first mounting foot 1 and the shell of the washing machine.

c. And (3) putting the shaft sleeve 5 into the second shaft hole 4, tightly fitting and sleeving the shaft sleeve 5 on a corresponding connecting shaft, and taking a screw to pass through the through hole 7 and screw into the screw hole 8, so that the shaft sleeve 5 and the second mounting leg 2 are fixed.

d. Get gasket and screw, after the screw passed individual gasket, the screw was twisted and is located the screw hole 9 of second shaft hole 4, and the screw passes through the gasket and fixes second installation foot 2 on corresponding connecting axle to realize the fixing between second installation foot 2 and the washing machine casing, accomplish the utility model discloses an installation work. Because the shaft sleeve 5 is smaller than the second shaft hole 4, the shaft sleeve 5 is in a free state in the second shaft hole 4, and the second mounting leg 2 is fixed on the corresponding connecting shaft and then does not generate stress due to deformation. The function of the sleeve 5 is, firstly, to position the respective connecting shaft and, secondly, to reduce or avoid the generation of stresses.

The utility model has the advantages of the cost is lower, can reduce other components and parts and arrange the degree of difficulty and the noise is difficult to the grow.

Claims

1. BLDC motor is moulded to tripod mounting structure's BMC package, including motor body, motor body's the outside is equipped with the plastic casing, is equipped with installation department, its characterized in that on the plastic casing: the installation portion comprises a first installation foot (1) and two second installation feet (2).

2. The BMC plastic-coated BLDC motor of the tripod mounting structure of claim 1, wherein: the novel bearing is characterized in that a first shaft hole (3) is formed in the first mounting foot (1), the length of the first mounting foot (1) is 40-60mm, a second shaft hole (4) is formed in the second mounting foot (2), and the length of the second mounting foot (2) is 15-25 mm.

3. The BMC plastic-coated BLDC motor of the tripod mounting structure of claim 2, wherein: still include axle sleeve (5) that two external diameters are less than second shaft hole (4), the one end of axle sleeve (5) is equipped with connecting piece (6), is equipped with through-hole (7) on the connecting piece, be equipped with on second installation foot (2) with screw hole matched with screw hole (8), the length of axle sleeve (5) is less than the length of second installation foot (2).

4. The BMC plastic-coated BLDC motor of the tripod mounting structure of claim 1, wherein: the first mounting foot (1) and the second mounting foot (2) are located on the same side of the plastic shell.