CN212033890U

CN212033890U - Transmission housing and motor and chain saw using same

Info

Publication number: CN212033890U
Application number: CN202021031160.XU
Authority: CN
Inventors: 李亚贵
Original assignee: Suzhou Alixi Brushless Motor Co ltd
Current assignee: Suzhou Alixi Brushless Motor Co ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2020-11-27
Anticipated expiration: 2030-06-08

Abstract

The utility model discloses a drive shell and use motor and chain saw of this drive shell, the drive shell includes casing and cap, the casing be equipped with motor stator fixed connection's lower terminal surface and with cap fixed connection's up end, the casing still is equipped with first bearing room and second bearing room, the cap is formed with the transmission cavity of intercommunication each other above first bearing room and second bearing room, the axis of first bearing room and second bearing room is parallel, the motor includes drive shell, stator module, rotor subassembly, stator lower end cover and fan, motor and casing fixed connection, the output shaft transmission of installing on the rotor shaft of motor and the cap is connected. The utility model discloses an aspect can effectively reduce the part and the assembly complexity of motor, fully practices thrift the production manufacturing cost, and on the other hand can reduce the heat that the motor produced by a wide margin.

Description

Transmission housing and motor and chain saw using same

Technical Field

The utility model relates to the technical field of motors, particularly, relate to a brushless motor and this brushless motor's transmission shell suitable for garden instrument especially chain saw.

Background

Among the prior art at present, split type assembly is adopted mostly in the assembly of chain saw and motor, reuse screw assembly behind the use adapter between motor and the instrument promptly, and the motor is independent part, adopts this kind of assembly mode both to increase the part quantity of instrument and has also increased the cost of instrument, is unfavorable for the simplification of assembly process.

In the use of garden instrument, because the restriction of structure does not have the fine heat dissipation for the motor of way, to a great extent has reduced the life of instrument.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the transmission shell and the motor using the transmission shell are provided, the assembly process of tools can be simplified to a certain extent, and the transmission shell of the embodiment can well dissipate heat of the motor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a transmission shell is characterized by comprising a shell body and a shell cover, wherein the shell body is provided with a lower end face fixedly connected with a motor stator and an upper end face fixedly connected with the shell cover, the shell body is also provided with a first bearing chamber and a second bearing chamber, the shell body is provided with a shaft hole for a rotor shaft of a power supply motor to pass through in the center of the first bearing chamber, and the shell cover is provided with a shaft hole for an output shaft to pass through right above the center of the second bearing chamber; the second bearing chamber accommodates the formed chamber downwards along the upper end face of the shell, the shell cover is provided with transmission chambers which are communicated with each other above the first bearing chamber and the second bearing chamber, and the axes of the first bearing chamber and the second bearing chamber are parallel.

Further, the shell is an aluminum piece with good heat dissipation performance.

Further, the first bearing chamber is a chamber formed by accommodating the housing along the lower end surface of the housing upwards.

Further, the casing is the double-deck integrated into one piece structure on upper and lower layer, including the lower floor motor fixed bed that is used for fixed motor and the upper shell lid fixed bed that is used for fixed cap, the motor fixed bed with the mutual overlap joint of one end that the shell lid fixed bed closes on mutually, the other end is formed with the platform face.

Further, the motor fixing layer is of a circular structure, and the shell cover fixing layer is of a gourd-shaped structure; the first bearing chamber is a cavity formed by containing the lower surface of the motor fixing layer upwards, the second bearing chamber is a cavity formed by containing the upper surface of the shell cover fixing layer downwards, a shaft hole in the center of the first bearing chamber upwards penetrates through the center of the front end of the shell cover fixing layer, and the second bearing chamber is located in the center of the rear end of the shell cover fixing layer.

Furthermore, the motor fixing layer is provided with studs for fixing the motor on the outer circumference thereof, and the shell cover fixing layer is correspondingly provided with studs for fixing the shell cover on the outer circumference thereof.

A motor using the transmission shell is a brushless motor and comprises a stator component, a rotor component, a stator lower end cover and a fan, wherein the stator component is sleeved on the rotor component, one end of a rotor shaft of the rotor component penetrates through a shaft hole of a first bearing chamber and is connected with a shell through a bearing in the first bearing chamber, the other end of the rotor shaft is fixedly arranged in a bearing chamber formed by the stator lower end cover through another bearing, and the stator lower end cover penetrates through the excircle of the stator component through a screw and is fixedly connected with a stud on the outer circumference of the shell; the fan is located below the stator lower end cover and fixedly connected with the rotor shaft.

Furthermore, an output shaft is installed in the second bearing chamber through a bearing, the upper end of the output shaft penetrates through a shaft hole of the shell cover, and the rotor shaft is in transmission connection with the output shaft in the transmission chamber.

Further, the output shaft and the rotor shaft are in transmission connection through a gear in the transmission chamber.

The driving part of the chain saw is the motor.

Compared with the prior art, the beneficial effects of the utility model are that: through set up first bearing chamber and second bearing chamber on the casing, the cap is formed with the transmission cavity that communicates each other above first bearing chamber and second bearing chamber, effectively reduces the part and the assembly complexity of motor, has reduced the installation degree of difficulty and the manufacturing cost of a whole set of garden instrument. In addition, the shell is processed by adopting the aluminum piece with better heat dissipation, the shell adopts a double-layer structure, and the upper layer and the lower layer are staggered and overlapped, so that the heat transfer is greatly increased, the effective heat dissipation is provided for the motor, and the service life of the motor is prolonged.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the embodiments, and it is obvious that the described embodiments are some embodiments, not all embodiments of the present invention.

Drawings

Fig. 1 is a schematic structural diagram of a housing.

Fig. 2 is a structural schematic view of the housing in another direction.

Fig. 3 is a schematic view of a housing cover with an output shaft and a driven gear mounted thereon.

Fig. 4 is a schematic view of the overall structure of the motor of the present invention;

fig. 5 is an exploded view of the motor of the present invention.

Fig. 6 is a sectional view of the structure of the driving part of the chain saw according to the present invention.

Wherein, each reference number and its corresponding part name in the figure are:

100. motor, 10, shell, 11, first bearing chamber,

12. a second bearing chamber, 13, a motor fixing layer, 14, a shell cover fixing layer,

20. a housing cover, 21, a transmission chamber, 30 a stator assembly,

40. rotor assembly, 41, rotor shaft, 50, stator lower end cover,

60. fan, 200, output shaft, 300, driven gear,

400. and a sprocket.

Detailed Description

The first embodiment is as follows:

as shown in fig. 1-3, a transmission housing includes a housing body 10 and a housing cover 20. The housing 10 is a double-layer integrally molded structure with upper and lower layers, and is made of a material with good heat dissipation performance, preferably an aluminum material. Casing 10 is including the lower floor motor fixed layer 13 that is used for fixed motor and the upper shell lid fixed layer 14 that is used for fixed cap 20, and wherein, motor fixed layer 13 is circular structure, and cap fixed layer 14 is calabash shape structure, and motor fixed layer 13 and cap fixed layer 14 overlap joint each other in the one end that closes on mutually, and the other end is formed with the platform face separately. The housing 10 is further provided with a first bearing chamber 11 and a second bearing chamber 12, the axes of the first bearing chamber 11 and the second bearing chamber 12 being parallel. The first bearing chamber 11 is a chamber formed by accommodating the lower surface of the motor fixing layer 13 upward, and the housing 10 is provided with a shaft hole at the center of the first bearing chamber 11 for the rotor shaft 41 of the motor to pass through. The second bearing chamber 12 is a cavity formed by downwardly accommodating the housing cover fixing layer 14 along the upper surface thereof. The central shaft hole of the first bearing chamber 11 upwards penetrates through the center of the front end of the housing cover fixing layer 14, and the second bearing chamber 12 is positioned in the center of the rear end of the housing cover fixing layer 14. The motor fixing layer 13 is provided with studs for fixing the motor on the outer circumference thereof, and the case cover fixing layer 14 is correspondingly provided with studs for fixing the case cover 20 on the outer circumference thereof. The housing cover 20 is provided with a shaft hole through which the output shaft 200 passes right above the center of the second bearing chamber 12, and the housing cover 20 is formed with a transmission chamber 21 communicating with each other above the first bearing chamber 11 and the second bearing chamber 12.

Example two:

as shown in fig. 4-6, an electric motor, which is a brushless electric motor, includes the above-mentioned transmission housing, a stator assembly 30, a rotor assembly 40, a stator lower end cover 50, and a fan 60. The stator assembly 30 is sleeved on the rotor assembly 40, one end of a rotor shaft 41 of the rotor assembly 40 passes through a shaft hole of the first bearing chamber 11 and is connected with the shell 10 through a bearing in the first bearing chamber 11, the other end of the rotor shaft 41 is fixedly installed in a bearing chamber formed by a stator lower end cover 50 through another bearing, and the stator lower end cover 50 passes through the outer circle of the stator assembly 30 through a screw and is fixedly connected with a stud on the outer circumference of the shell 10; the fan 60 is located below the stator lower end cover 50, and the fan 60 is fixedly connected with the rotor shaft 41. An output shaft 200 is mounted in the second bearing chamber 12 through a bearing, the upper end of the output shaft 200 penetrates through a shaft hole of the housing cover 20, and the rotor shaft 41 is in transmission connection with the output shaft 200 in the transmission chamber 21. Preferably, the output shaft 200 and the rotor shaft 41 are in transmission connection through a gear in the transmission chamber 21, and specifically, the output shaft may be: the lower end of the output shaft 200 is fixedly provided with a driven gear 300, and the outer surface of the upper end of the rotor shaft 41 is correspondingly provided with a tooth-shaped structure meshed with the driven gear 300 or is provided with a driving gear meshed with the driven gear 300.

Example three:

as shown in fig. 6, the driving member of the chain saw is the motor, and the saw blade of the chain saw is driven by attaching a sprocket 400 to the upper end of an output shaft 200.

The utility model discloses a set up first bearing room and second bearing room on the casing, the cap is formed with the transmission cavity of intercommunication each other above first bearing room and second bearing room, effectively reduces the part and the assembly complexity of motor, has reduced the installation degree of difficulty and the manufacturing cost of a whole set of garden instrument or chain saw. In addition, through adopting the better aluminium parts processing of heat dissipation to become the casing, the casing adopts bilayer structure, and the coincide form is staggered to upper and lower floor to greatly increased thermal transmission, for the whole effective heat dissipation that provides of motor, prolonged the life of motor and garden instrument.

The above-mentioned embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the spirit of the main technical solution of the present invention, and equivalent changes or modifications made from the spirit of the main technical solution of the present invention should be covered in the protection scope of the present invention.

Claims

1. A transmission shell is characterized by comprising a shell body and a shell cover, wherein the shell body is provided with a lower end face fixedly connected with a motor stator and an upper end face fixedly connected with the shell cover, the shell body is also provided with a first bearing chamber and a second bearing chamber, the shell body is provided with a shaft hole for a rotor shaft of a power supply motor to pass through in the center of the first bearing chamber, and the shell cover is provided with a shaft hole for an output shaft to pass through right above the center of the second bearing chamber; the second bearing chamber accommodates the formed chamber downwards along the upper end face of the shell, the shell cover is provided with transmission chambers which are communicated with each other above the first bearing chamber and the second bearing chamber, and the axes of the first bearing chamber and the second bearing chamber are parallel.

2. The transmission housing according to claim 1, wherein the casing is an aluminum member with good heat dissipation performance.

3. The drive housing of claim 1, wherein the first bearing chamber is a chamber formed by upwardly receiving the first bearing chamber along the lower end of the housing.

4. The transmission housing as claimed in claim 1, wherein the housing is a double-layer integrally formed structure including a motor fixing layer for fixing the motor and a housing cover fixing layer for fixing the housing cover, one end of the motor fixing layer adjacent to the housing cover fixing layer is overlapped with the other end of the motor fixing layer, and a platform surface is formed at the other end of the motor fixing layer.

5. The transmission housing according to claim 4, wherein the motor fixing layer is a circular structure, and the housing cover fixing layer is a gourd-shaped structure; the first bearing chamber is a cavity formed by containing the lower surface of the motor fixing layer upwards, the second bearing chamber is a cavity formed by containing the upper surface of the shell cover fixing layer downwards, a shaft hole in the center of the first bearing chamber upwards penetrates through the center of the front end of the shell cover fixing layer, and the second bearing chamber is located in the center of the rear end of the shell cover fixing layer.

6. A drive housing according to claim 5, wherein the motor fixing layer is provided on its outer circumference with studs for fixing the motor, and the housing cover fixing layer is correspondingly provided on its outer circumference with studs for fixing the housing cover.

7. The motor of the transmission housing, according to claim 1, is a brushless motor, and comprises a stator assembly, a rotor assembly, a stator lower end cover and a fan, wherein the stator assembly is sleeved on the rotor assembly, one end of a rotor shaft of the rotor assembly passes through a shaft hole of a first bearing chamber and is connected with a housing through a bearing in the first bearing chamber, the other end of the rotor shaft is fixedly installed in a bearing chamber formed by the stator lower end cover through another bearing, and the stator lower end cover passes through an outer circle of the stator assembly through a screw and is fixedly connected with a stud on an outer circumference of the housing; the fan is located below the stator lower end cover and fixedly connected with the rotor shaft.

8. The electric motor of claim 7, wherein the output shaft is mounted in the second bearing chamber through a bearing, the upper end of the output shaft passes through a shaft hole in the housing cover, and the rotor shaft is in driving connection with the output shaft in the driving chamber.

9. The electric machine of claim 8 wherein the output shaft is geared with the rotor shaft within the drive chamber.

10. A chain saw, wherein the driving part of the chain saw is the motor of claim 7.