CN210405001U

CN210405001U - Electric tool stator and rotor with oil cooling structure

Info

Publication number: CN210405001U
Application number: CN201921336921.XU
Authority: CN
Inventors: 刘汉彬
Original assignee: Jingjiang Shengfeng Electrical Machinery Manufacturing Co Ltd
Current assignee: Jingjiang Shengfeng Electrical Machinery Manufacturing Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-04-24
Anticipated expiration: 2029-08-16

Abstract

The utility model discloses an electric tool stator and rotor with oil cooling structure, including stator housing and first pivot, the oil inlet has all been seted up on stator housing's front and back both ends surface, the top surface mounting of end cover has first fixing bolt, stator housing's lower fixed surface is connected with the base, stator housing's internally mounted has stator winding, first pivot is located stator housing's right side, and the right-hand member of first pivot is connected with the bearing, the right-hand member of bearing is connected with rotor housing, the inside groove has been seted up to the inside of first pivot, and the right-hand member of inside groove is connected with the connecting pipe, the right-hand member internally mounted of connecting pipe has the sprue, and the outer end surface of sprue is connected with the connecting rod. This electric tool stator-rotor with oil cooling structure through the inside fluting at the pivot for the coolant oil can circulate in the inside of pivot, utilizes the heat absorption that oil cooling's mode can be quick like this, has improved cooling efficiency.

Description

Electric tool stator and rotor with oil cooling structure

Technical Field

The utility model relates to an electric tool stator and rotor technical field specifically is an electric tool stator and rotor with oil cooling structure.

Background

The stator and the rotor are important components inside the electric tool, the electric tool can normally realize rotation through the normal operation of the stator and the rotor inside the electric tool, the stator and the rotor inevitably generate heat in the operation process, and if the heat is not treated, the stator and the rotor inevitably damage;

however, most of the conventional stators and rotors in the market are cooled by air cooling and water cooling, and such cooling is too inefficient and is not practical for some electric tools with sealed housings.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric tool stator and rotor with oil cooling structure to solve the most adoption forced air cooling and the water-cooled mode of current stator and rotor on the market that proposes in the above-mentioned background art and cool off, such cooling method cooling efficiency is low excessively, and to some shell seal's electric tool, unrealistic problem very also.

In order to achieve the above object, the utility model provides a following technical scheme: an electric tool stator and rotor with an oil cooling structure comprises a stator shell and a first rotating shaft, wherein oil inlets are formed in the surfaces of the front end and the rear end of the stator shell, an end cover is connected to the surface of the left end of the stator shell, a first fixing bolt is installed on the surface of the top end of the end cover, the end cover and the stator shell are fixedly connected through the first fixing bolt, a base is fixedly connected to the lower surface of the stator shell, a second fixing bolt is symmetrically installed on the surface of the base, and a stator winding is installed inside the stator shell;

the first rotating shaft is located on the right side of the stator shell, the right end of the first rotating shaft is connected with a bearing, the right end of the bearing is connected with the rotor shell, a through hole is formed in the surface of the rotor shell, the right end of the rotor shell is connected with a second rotating shaft, an inner groove is formed in the first rotating shaft, the right end of the inner groove is connected with a connecting pipe, a blocking block is mounted inside the right end of the connecting pipe, and the surface of the outer end of the blocking block is connected with a connecting rod.

Preferably, the end cover is connected with the left end of the stator shell in a clamping manner, and the top end of the end cover is of a plate-shaped protruding structure.

Preferably, the center point of the inner groove and the center point of the first rotating shaft are located on the same horizontal line, the position of the inner groove corresponds to the position of the connecting pipe, and the diameter of the inner groove is the same as that of the protruding structure at the middle position of the left end surface of the connecting pipe.

Preferably, the longitudinal section of the connecting pipe is E-shaped, the left end of the connecting pipe penetrates through the inside of the first rotating shaft, and the inner wall of the connecting pipe is tightly attached to the outer end surface of the blocking block.

Preferably, the inside of sprue at the connecting pipe is sliding construction, and the connected mode of sprue and connecting rod is the welding to the longitudinal section of connecting rod is "T" font, and the length dimension of connecting rod outer end is the same with the diameter size of through-hole simultaneously.

Compared with the prior art, the beneficial effects of the utility model are that: according to the stator and the rotor of the electric tool with the oil cooling structure, the grooves are formed in the rotating shaft, so that cooling oil can circulate in the rotating shaft, and therefore heat can be absorbed quickly by using an oil cooling mode, and the cooling efficiency is improved;

1. an inner groove is formed in the first rotating shaft, and the position of the inner groove corresponds to that of the connecting pipe, so that cooling oil can circulate in the stator and the rotor through the inner groove and the connecting pipe, heat can be absorbed quickly, and the purpose of heat dissipation is achieved;

2. the longitudinal section of the connecting pipe is in an E-shaped structure, and the cooling oil can realize circulation in the stator and the rotor through the structure of the connecting pipe, so that the cooling oil can be recovered conveniently, and the cooling oil is prevented from heating due to excessive heat absorption;

3. the length dimension of connecting rod outer end is the same with the diameter dimension of through-hole, and the connecting rod can avoid appearing rocking like this, and utilizes the frictional force that the two is connected, can prevent that the connecting rod from sliding by oneself, and the staff slides through the manual control connecting rod simultaneously, can control the sprue and slide in the connecting pipe is inside to be convenient for control the circulation of cooling oil in stator and rotor inside.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic front sectional view of the first rotating shaft and the rotor housing of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 3 according to the present invention.

In the figure: 1. a stator housing; 2. an oil inlet; 3. an end cap; 4. a first fixing bolt; 5. a base; 6. a second fixing bolt; 7. a stator winding; 8. a first rotating shaft; 9. a bearing; 10. a rotor housing; 11. a through hole; 12. a second rotating shaft; 13. an inner tank; 14. a connecting pipe; 15. blocking; 16. a connecting rod.

Detailed Description

In the following, reference will be made to the accompanying drawings in the embodiments of the present invention for clearly and completely describing the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: an electric tool stator and rotor with an oil cooling structure comprises a stator shell 1, an oil inlet 2, an end cover 3, a first fixing bolt 4, a base 5, a second fixing bolt 6, a stator winding 7, a first rotating shaft 8, a bearing 9, a rotor shell 10, a through hole 11, a second rotating shaft 12, an inner groove 13, a connecting pipe 14, a blocking block 15 and a connecting rod 16, wherein the oil inlet 2 is formed in the front end surface and the rear end surface of the stator shell 1, the end cover 3 is connected to the left end surface of the stator shell 1, the first fixing bolt 4 is installed on the top end surface of the end cover 3, the end cover 3 and the stator shell 1 are fixedly connected through the first fixing bolt 4, the base 5 is fixedly connected to the lower surface of the stator shell 1, the second fixing bolt 6 is symmetrically installed on the surface of the base 5, and the stator winding 7 is installed inside the;

the first rotating shaft 8 is positioned at the right side of the stator housing 1, the right end of the first rotating shaft 8 is connected with a bearing 9, the right end of the bearing 9 is connected with a rotor housing 10, the surface of the rotor housing 10 is provided with a through hole 11, the right end of the rotor housing 10 is connected with a second rotating shaft 12, an inner groove 13 is arranged inside the first rotating shaft 8, the right end of the inner groove 13 is connected with a connecting pipe 14, the central point of the inner groove 13 and the central point of the first rotating shaft 8 are positioned on the same horizontal line, the position of the inner groove 13 corresponds to the position of the connecting pipe 14, the diameter size of the inner groove 13 is the same as the diameter size of a convex structure at the middle position of the left end surface of the connecting pipe 14, the circulation of cooling oil is facilitated through the correspondence of the inner groove 13 and the connecting pipe 14, a block 15 is arranged inside the right end of the connecting pipe, and the left end of connecting pipe 14 runs through the inside at first pivot 8, and the inner wall of connecting pipe 14 and the outer end surface of sprue 15 closely laminate, the shape structure of connecting pipe 14 is convenient for retrieve the cooling oil, sprue 15 is sliding construction in the inside of connecting pipe 14, and the connected mode of sprue 15 and connecting rod 16 is the welding, and the vertical section of connecting rod 16 is "T" font, the length dimension of connecting rod 16 outer end is the same with the diameter size of through-hole 11 simultaneously, utilize the slip of sprue 15, be convenient for control the flow of cooling oil in connecting pipe 14 inside.

Like the left end snap-fit connection of end cover 3 and stator shell 1 in fig. 1 and fig. 2, and the top of end cover 3 is the platelike protruding structure, after end cover 3 and stator shell 1 are connected, utilize the bolt to pass the platelike protruding structure on the end cover 3, just can make end cover 3 and stator shell 1 carry out fixed connection, and dismantle conveniently.

The working principle is as follows: when the electric tool stator and rotor with the oil cooling structure is used, firstly, the end cover 3 and the stator shell 1 are fixedly connected through the first fixing bolt 4, and then the base 5 is fixed through the second fixing bolt 6;

in the working process, the oil inlet 2 monomer is respectively communicated with external pipelines, cooling oil enters the interior of the stator shell 1 through the oil inlet 2 through one of the pipelines, then the cooling oil flows into the inner groove 13 in the interior of the first rotating shaft 8 and then enters the connecting pipe 14, and the structure of the connecting pipe 14 enables the cooling oil to circulate in the interior of the connecting pipe and recover the oil through the other oil inlet 2 and the pipeline after the cooling oil circulates for one circle;

during the circulation of the cooling oil, the blocking piece 15 inside the rotor housing 10 can be pulled by a worker manually to pull the connecting rod 16, so that the connecting rod 16 slides in the through hole 11, and the blocking piece 15 is driven to slide inside the connecting pipe 14, thereby controlling the circulation of the cooling oil inside the connecting pipe 14, which is the whole process of using the stator and rotor of the electric tool with the oil cooling structure, and what is not described in detail in this specification belongs to the prior art known to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an electric tool stator-rotor with oil cooling structure, includes stator shell (1) and first pivot (8), its characterized in that: oil inlets (2) are formed in the surfaces of the front end and the rear end of the stator shell (1), an end cover (3) is connected to the surface of the left end of the stator shell (1), a first fixing bolt (4) is mounted on the surface of the top end of the end cover (3), the end cover (3) and the stator shell (1) are fixedly connected through the first fixing bolt (4), a base (5) is fixedly connected to the lower surface of the stator shell (1), second fixing bolts (6) are symmetrically mounted on the surface of the base (5), and a stator winding (7) is mounted inside the stator shell (1);

first pivot (8) are located the right side of stator housing (1), and the right-hand member of first pivot (8) is connected with bearing (9), the right-hand member of bearing (9) is connected with rotor housing (10), and rotor housing (10) the surface seted up through-hole (11) to the right-hand member of rotor housing (10) is connected with second pivot (12), inside groove (13) have been seted up to the inside of first pivot (8), and the right-hand member of inside groove (13) is connected with connecting pipe (14), the right-hand member internally mounted of connecting pipe (14) has sprue (15), and the outer end surface of sprue (15) is connected with connecting rod (16).

2. The stator and rotor of an electric tool with an oil cooling structure as set forth in claim 1, wherein: the end cover (3) is connected with the left end of the stator shell (1) in a clamping mode, and the top end of the end cover (3) is of a plate-shaped protruding structure.

3. The stator and rotor of an electric tool with an oil cooling structure as set forth in claim 1, wherein: the center point of the inner groove (13) and the center point of the first rotating shaft (8) are located on the same horizontal line, the position of the inner groove (13) corresponds to the position of the connecting pipe (14), and the diameter of the inner groove (13) is the same as that of the protruding structure in the middle of the surface of the left end of the connecting pipe (14).

4. The stator and rotor of an electric tool with an oil cooling structure as set forth in claim 1, wherein: the longitudinal section of the connecting pipe (14) is E-shaped, the left end of the connecting pipe (14) penetrates through the inside of the first rotating shaft (8), and the inner wall of the connecting pipe (14) is tightly attached to the outer end surface of the blocking block (15).

5. The stator and rotor of an electric tool with an oil cooling structure as set forth in claim 1, wherein: the inside of sprue (15) at connecting pipe (14) is sliding construction, and the connected mode of sprue (15) and connecting rod (16) is the welding to the longitudinal section of connecting rod (16) is "T" font, and the length dimension of connecting rod (16) outer end is the same with the diameter size of through-hole (11) simultaneously.