CN214889198U - Motor with flexible tooth-embedded connecting structure - Google Patents
Motor with flexible tooth-embedded connecting structure Download PDFInfo
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- CN214889198U CN214889198U CN202121175353.7U CN202121175353U CN214889198U CN 214889198 U CN214889198 U CN 214889198U CN 202121175353 U CN202121175353 U CN 202121175353U CN 214889198 U CN214889198 U CN 214889198U
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Abstract
The utility model discloses a motor with a flexible tooth-embedded connecting structure, which comprises a motor stator shell, a box body, a bearing arranged in the motor stator shell, a motor rotor a, a worm shaft a, a bearing seat a, a worm nylon tooth-embedded, a motor nylon tooth-embedded, a rolling bearing and a motor end cover; the advantages are as follows: (1) the processing precision requirement of the concentricity of all parts is reduced, the assembly difficulty of the coaxiality of the parts is improved, and the transmission reliability is improved. (2) The assembly manufacturability is improved, the motor can be assembled into an independent integral component, and the integral performance of the motor can be more reliable; meanwhile, the box body is convenient to mount and dismount, and the production efficiency and interchangeability are improved. (3) The jaw made of nylon reduces the requirements on the mechanical property and the processing precision of key parts and reduces the production cost. The motor shaft and the worm shaft can avoid mutual hard impact when rotating at high speed in a synchronous and frequent reversing manner, and the possibility of transmission failure is reduced.
Description
Technical Field
The utility model relates to a valve electric actuator technical field, especially a motor with flexible tooth inlays formula connection structure.
Background
The valve electric device is an electromechanical device for controlling the opening and closing of a valve, and the main control type of the valve electric device is electric drive. The main structure of the electric device is basically a worm gear pair speed reducing mechanism, and a motor drives a worm to further drive a worm gear to rotate so as to realize the operation of the electric device. Generally, the worm is driven by a motor of an electric device in two modes, one mode is a coaxial direct connection mode, and the other mode is a transmission mode. With the development of valve control technology, the requirements for valve control precision and control mode are gradually increased, and the intelligent valve electric device for controlling the valve is more and more popular in field application due to higher control precision and applicability to various electrical control types. Common motor-driven worm structures of intelligent electric devices are generally coaxial and direct-connected.
The connection structure of the motor and the worm shaft in the prior art is shown in fig. 1, the motor is in a split type, and needs to be assembled into a whole on an electric device. The bearing seat b 17 is mounted in the housing 12, and the needle bearing 16 is mounted on the bearing seat b 17. The worm shaft b 15 protrudes from the inner hole of the bearing seat b 17 and fits into the shaft hole of the motor rotor b 14. The motor rotor b14 and the worm shaft b 15 are both provided with through holes, and a driving pin 19 penetrates through the through holes on the motor rotor b14 and the worm shaft b 15, and the motor rotor b14 and the worm shaft b 15 are connected and then fastened by a locking nut 18. The motor stator housing built-in bearing 13 is installed inside the motor stator housing 11, then the motor stator housing 11 is sleeved from the rear end of the motor rotor b14, the rear end of the shaft of the motor rotor b14 is ensured to extend into the inner hole of the motor stator housing built-in bearing 13, and meanwhile, the positioning spigot of the motor stator housing 11 is matched with the inner hole of the box body 12 and is reliably connected by a fastening screw.
This structure has the following disadvantages:
(1) the requirement on the machining precision is high, and the production efficiency is low: because the motor rotor needs to rotate at a high speed to drive the worm, the motor rotor has higher precision requirements on the matching coaxiality of related parts related to the structure, namely, a positioning spigot and a built-in bearing of the motor stator shell, the front end and the rear end of the motor rotor shaft and inner holes of the motor rotor shaft, the inner hole of the motor rotor shaft after assembly is matched with a shaft hole of the worm shaft, and the excircle of the motor rotor shaft is matched with a shaft hole of a needle bearing inner hole arranged at a bearing seat, so that the motor rotor needs to meet better concentricity requirements and machining precision requirements. If the situation that the precision is poor occurs in any one matching link, the motor can be blocked or unsmooth in rotation, the output torque of the motor is insufficient, the output efficiency of the electric device is obviously affected, and the fault phenomena such as grinding damage of parts and the like can be caused by high-speed synchronous rotation of a motor rotor and a worm.
(2) The production cost is high, the positioning hole is difficult to process, and the manufacturability is poor: the motor rotor shaft and the worm shaft in the structure need to be connected in a matched mode through the transmission pin, the motion mode is frequent positive and negative high-speed rotation motion, and great impact is exerted on the transmission pin during rotation reversing, so that the machining precision and the form and position tolerance requirements of the through hole in the motor rotor shaft and the worm shaft are high, the transmission pin needs to be made of a material with high mechanical strength, the requirement on the smoothness of the shaft hole in the connection matching surface is high, the shearing phenomenon in the rotation repeated motion is avoided, and connection failure is caused.
(3) The assembly manufacturability is poor, and the installation and the disassembly are inconvenient: the assembled parts of the structure need to be assembled and installed on the box body, and the assembly and the disassembly are inconvenient; the axis positioning of the front end and the rear end of the motor rotor belong to different parts respectively, and the concentricity is not easy to guarantee; the motor rotor and the worm are matched through the pin holes, if the matching fails, the rotor and the worm need to be replaced at the same time, the motor rotor and the worm are inconvenient to disassemble, and the economical efficiency and the interchangeability are poor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a motor with flexible tooth inlays formula connection structure, reduction in production cost and machining precision improve drive mode and assembly manufacturability, and the complete set installation of being convenient for is dismantled, has solved the technical problem who exists among the well-known art.
The technical scheme of the utility model: a motor with a flexible tooth-embedded connecting structure comprises a motor stator shell, a box body and a motor stator shell built-in bearing, wherein the motor stator shell is fixedly connected with the box body; the bearing seat a is assembled in the box body; the worm shaft a is in clearance fit with an inner hole of the bearing seat a; the worm nylon jaw is fixed at the shaft end of the worm shaft a and is axially positioned through the shaft shoulder of the worm shaft a; the worm nylon jaw is connected with the motor nylon jaw in a jaw-type matching manner; the motor nylon jaw is fixed at the front end of the motor rotor a and is axially positioned by means of a shaft shoulder of the motor rotor a; the front end of the motor rotor a is assembled on a motor end cover through a rolling bearing, and the rear end of the motor rotor a is matched and positioned with a built-in bearing of a motor stator shell; the motor end cover is assembled on the motor stator shell; the motor stator shell, the built-in bearing of the motor stator shell, the motor rotor a and the rolling bearing are coaxial.
The motor stator shell is provided with a positioning spigot, and the positioning spigot of the motor stator shell is matched with the inner hole of the box body.
The built-in bearing of the motor stator shell is coaxial with the positioning spigot of the motor stator shell.
And an oil seal is arranged between the inner hole of the bearing seat a and the worm shaft a.
The worm nylon jaw is fixed at the shaft end of the worm shaft a through a key a.
The nylon jaw of the motor is fixed at the front end of the rotor a of the motor through a key b.
And the middle shaft shoulder of the motor rotor a is provided with a shaft retaining ring, and the shaft retaining ring axially limits the rolling bearing.
The motor end cover is assembled on the motor stator shell in an interference fit mode through the positioning spigot.
The utility model discloses an advantage and positive effect:
(1) the utility model reduces the processing precision requirement of the concentricity of the parts of the motor stator shell, the motor rotor, the worm shaft, the bearing seat and the box body, and the direct concentricity requirement does not exist between the worm shaft and the motor rotor, thereby greatly reducing the processing difficulty and the size precision requirement of the related parts, improving the assembly difficulty of the part coaxiality and improving the transmission reliability;
(2) the utility model improves the assembly manufacturability, the motor stator shell and the motor rotor can be assembled into independent integral parts, the axle center positioning of the front end and the rear end of the motor rotor is based on the motor shell, the concentricity is easier to be ensured, and the integral performance of the motor can be more reliable; meanwhile, the motor is an integral part, so that the motor is convenient to mount and dismount on the box body, and the production efficiency and interchangeability are improved;
(3) the utility model discloses a jaw type connected mode of nylon material has reduced the requirement to key part mechanical properties and machining precision, has reduced manufacturing cost. And because the nylon jaw material is the reinforcing nylon that possesses suitable elasticity and mechanical strength, consequently adopt the connection of nylon material jaw, because the jaw contact surface possesses suitable elasticity and deformation, can avoid mutual rigid impact when motor shaft and worm axle frequent switching-over in step high-speed rotation, effectively eliminated the shearing failure problem that rigid impact probably caused, reduced the possibility of transmission trouble.
(4) The utility model discloses an oil blanket's positive effect lies in, when having the lubricating grease that is equipped with flow characteristic in the box, can prevent this lubricating grease from the outside seepage of worm axle department.
Drawings
Fig. 1 is a schematic structural diagram of the prior art.
Fig. 2 is a schematic structural diagram of a motor with a flexible jaw connection structure according to the present invention.
The device comprises a base, a bearing seat, a worm shaft, a bearing seat, a worm nylon jaw, a motor nylon jaw, a bearing seat, a bearing, a rolling bearing, a motor end cover, a motor rotor, a bearing, a motor stator shell, a box body, a bearing, a motor rotor, a motor stator shell, a bearing, a transmission pin and an oil seal, wherein the bearing is 1, the worm shaft is a, the key is 2, the bearing is 3, the bearing seat is a bearing seat, the bearing seat is 4, the motor nylon jaw is 5, the key is 6, the bearing is 7, the rolling bearing is 8, the motor end cover is 9, the motor rotor is 10, the motor stator shell is 11, the box body is 12, the bearing is arranged in the motor stator shell, the bearing is 14, the motor rotor is 15, the worm shaft is b, the needle bearing is 16, the bearing seat is 17, the bearing seat is 18, the locking nut is 19, the transmission pin is 20.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are exemplified and the detailed description is made in conjunction with the accompanying drawings.
Example 1: a motor with a flexible jaw type connecting structure (see figure 2) comprises a motor stator shell 11, a box body 12 and a motor stator shell built-in bearing 13, wherein the motor stator shell 11 is fixedly connected with the box body 12, and the motor stator shell built-in bearing 13 is assembled in the motor stator shell 11, and is characterized by further comprising a motor rotor a10, a worm shaft a1, a bearing seat a3, a worm nylon jaw 4, a motor nylon jaw 5, a rolling bearing 8 and a motor end cover 9; the bearing seat a3 is assembled in the box body 12; the worm shaft a1 is in clearance fit with an inner hole of the bearing seat a 3; the worm nylon gear 4 is fixed at the shaft end of the worm shaft a1 and is axially positioned through the shaft shoulder of the worm shaft a 1; the worm nylon jaw 4 is connected with the motor nylon jaw 5 in a jaw-type matching manner; the motor nylon jaw 5 is fixed at the front end of the motor rotor a10 and is axially positioned by means of a shaft shoulder of the motor rotor a 10; the front end of the motor rotor a10 is assembled on a motor end cover 9 through a rolling bearing 8, and the rear end of the motor rotor a10 is matched and positioned with a built-in bearing 13 of a motor stator shell; the motor end cover 9 is assembled on the motor stator shell 11; the motor stator shell 11, the built-in bearing 13 of the motor stator shell, the motor rotor a10 and the rolling bearing 8 are coaxial.
The motor stator shell 11 is provided with a positioning spigot, and the positioning spigot of the motor stator shell 11 is matched with the inner hole of the box body 12.
The motor stator housing built-in bearing 13 is coaxial with the positioning spigot of the motor stator housing 11.
An oil seal 20 is arranged between the inner hole of the bearing seat a3 and the worm shaft a 1.
The worm nylon jaw 4 is fixed at the shaft end of the worm shaft a1 through a key a 2.
The motor nylon jaw 5 is fixed at the front end of the motor rotor a10 through a key b 6.
The middle shaft shoulder of the motor rotor a10 is provided with a shaft retainer ring 7, and the shaft retainer ring 7 axially limits the rolling bearing 8.
The motor end cover 9 is assembled on the motor stator shell 11 through a positioning spigot in an interference fit manner.
Example 2: a motor with a flexible jaw type connecting structure comprises a motor stator shell 11, a box body 12 and a motor stator shell built-in bearing 13, wherein the motor stator shell 11 is fixedly connected with the box body 12, and the motor stator shell built-in bearing 13 is assembled in the motor stator shell 11; the bearing seat a3 is assembled in the box body 12; the worm shaft a1 is in clearance fit with an inner hole of the bearing seat a 3; the worm nylon gear 4 is fixed at the shaft end of the worm shaft a1 and is axially positioned through the shaft shoulder of the worm shaft a 1; the worm nylon jaw 4 is connected with the motor nylon jaw 5 in a jaw-type matching manner; the motor nylon jaw 5 is fixed at the front end of the motor rotor a10 and is axially positioned by means of a shaft shoulder of the motor rotor a 10; the front end of the motor rotor a10 is assembled on a motor end cover 9 through a rolling bearing 8, and the rear end of the motor rotor a10 is matched and positioned with a built-in bearing 13 of a motor stator shell; the motor end cover 9 is assembled on the motor stator shell 11; the motor stator shell 11, the built-in bearing 13 of the motor stator shell, the motor rotor a10 and the rolling bearing 8 are coaxial.
The motor stator shell 11 is provided with a positioning spigot, and the positioning spigot of the motor stator shell 11 is matched with the inner hole of the box body 12.
The motor stator housing built-in bearing 13 is coaxial with the positioning spigot of the motor stator housing 11.
The worm nylon jaw 4 is fixed at the shaft end of the worm shaft a1 through a key a 2.
The motor nylon jaw 5 is fixed at the front end of the motor rotor a10 through a key b 6.
The middle shaft shoulder of the motor rotor a10 is provided with a shaft retainer ring 7, and the shaft retainer ring 7 axially limits the rolling bearing 8.
The motor end cover 9 is assembled on the motor stator shell 11 through a positioning spigot in an interference fit manner.
Example 3: a motor with a flexible jaw type connecting structure comprises a motor stator shell 11, a box body 12 and a motor stator shell built-in bearing 13, wherein the motor stator shell 11 is fixedly connected with the box body 12, and the motor stator shell built-in bearing 13 is assembled in the motor stator shell 11; the bearing seat a3 is assembled in the box body 12; the worm shaft a1 is in clearance fit with an inner hole of the bearing seat a 3; the worm nylon gear 4 is fixed at the shaft end of the worm shaft a1 and is axially positioned through the shaft shoulder of the worm shaft a 1; the worm nylon jaw 4 is connected with the motor nylon jaw 5 in a jaw-type matching manner; the motor nylon jaw 5 is fixed at the front end of the motor rotor a10 and is axially positioned by means of a shaft shoulder of the motor rotor a 10; the front end of the motor rotor a10 is assembled on a motor end cover 9 through a rolling bearing 8, and the rear end of the motor rotor a10 is matched and positioned with a built-in bearing 13 of a motor stator shell; the motor end cover 9 is assembled on the motor stator shell 11; the motor stator shell 11, the built-in bearing 13 of the motor stator shell, the motor rotor a10 and the rolling bearing 8 are coaxial.
The motor stator shell 11 is provided with a positioning spigot, and the positioning spigot of the motor stator shell 11 is matched with the inner hole of the box body 12.
The motor stator housing built-in bearing 13 is coaxial with the positioning spigot of the motor stator housing 11.
An oil seal 20 is arranged between the inner hole of the bearing seat a3 and the worm shaft a 1.
The worm nylon jaw 4 is fixed at the shaft end of the worm shaft a1 through a key a 2.
The motor nylon jaw 5 is fixed at the front end of the motor rotor a10 through a key b 6.
The motor end cover 9 is assembled on the motor stator shell 11 through a positioning spigot in an interference fit manner.
Claims (8)
1. A motor with a flexible tooth-embedded connecting structure comprises a motor stator shell, a box body and a motor stator shell built-in bearing, wherein the motor stator shell is fixedly connected with the box body; the bearing seat a is assembled in the box body; the worm shaft a is in clearance fit with an inner hole of the bearing seat a; the worm nylon jaw is fixed at the shaft end of the worm shaft a and is axially positioned through the shaft shoulder of the worm shaft a; the worm nylon jaw is connected with the motor nylon jaw in a jaw-type matching manner; the motor nylon jaw is fixed at the front end of the motor rotor a and is axially positioned by means of a shaft shoulder of the motor rotor a; the front end of the motor rotor a is assembled on a motor end cover through a rolling bearing, and the rear end of the motor rotor a is matched and positioned with a built-in bearing of a motor stator shell; the motor end cover is assembled on the motor stator shell; the motor stator shell, the built-in bearing of the motor stator shell, the motor rotor a and the rolling bearing are coaxial.
2. The motor with the flexible jaw connection structure as claimed in claim 1, wherein the motor stator housing is provided with a positioning spigot, and the positioning spigot of the motor stator housing is matched with the inner hole of the box body.
3. The electric machine with a flexible jaw connection according to claim 2, wherein the motor stator housing built-in bearing is coaxial with the positioning spigot of the motor stator housing.
4. The motor with the flexible jaw type connecting structure as claimed in claim 1, wherein an oil seal is installed between the inner hole of the bearing seat a and the worm shaft a.
5. The motor with the flexible jaw connection structure as claimed in claim 1, wherein the worm nylon jaw is fixed at the shaft end of the worm shaft a by a key a.
6. The motor with the flexible jaw type connection structure as claimed in claim 1, wherein the nylon jaw of the motor is fixed at the front end of the rotor a of the motor by a key b.
7. The motor with the flexible jaw connection structure as claimed in claim 1, wherein the shaft retaining ring is assembled on the middle shaft shoulder of the motor rotor a, and the shaft retaining ring axially retains the rolling bearing.
8. The electric machine with the flexible jaw type connecting structure as claimed in claim 1, wherein said motor end cover is assembled on the motor stator housing by interference fit of positioning spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175353.7U CN214889198U (en) | 2021-05-28 | 2021-05-28 | Motor with flexible tooth-embedded connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121175353.7U CN214889198U (en) | 2021-05-28 | 2021-05-28 | Motor with flexible tooth-embedded connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214889198U true CN214889198U (en) | 2021-11-26 |
Family
ID=78901672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121175353.7U Active CN214889198U (en) | 2021-05-28 | 2021-05-28 | Motor with flexible tooth-embedded connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214889198U (en) |
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2021
- 2021-05-28 CN CN202121175353.7U patent/CN214889198U/en active Active
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