CN219592214U - Sealing structure of servo motor - Google Patents
Sealing structure of servo motor Download PDFInfo
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- CN219592214U CN219592214U CN202320506731.8U CN202320506731U CN219592214U CN 219592214 U CN219592214 U CN 219592214U CN 202320506731 U CN202320506731 U CN 202320506731U CN 219592214 U CN219592214 U CN 219592214U
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- brake
- sealing gasket
- servo motor
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Abstract
The utility model relates to a sealing structure of a servo motor, which is characterized in that: the device comprises a shell, a front end cover, a rear end cover, a rotating shaft, a brake cover, a signal wire connector and an encoder cover; wherein, the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the shell; the rotating shaft is pivoted on the front end cover and the rear end cover; the brake is arranged at one end of the rotating shaft; the brake cover is covered on the brake; the signal wire connector is inserted on the encoder cover, and a sealing piece is arranged between the signal wire connector and the brake cover; the encoder cover is positioned on one side of the brake cover; the encoder cover is covered with a power line pressing cover, and a power line sealing gasket component is arranged between the encoder cover and the power line pressing cover. The utility model has reliable sealing performance and can reach IP67 protection level by arranging the power line sealing gasket assembly, the brake sealing gasket, the O-shaped sealing ring and other sealing structures.
Description
Technical Field
The utility model relates to a composition structure of a motor, in particular to a sealing structure of a servo motor, and belongs to the technical field of motors.
Background
As is well known, the servo motor can convert the received electric signal into angular displacement or angular velocity output on the motor shaft, and has the characteristics of controllable speed, very accurate position precision, small electromechanical time constant, high linearity and the like, so that the demand on the servo motor in the market is increasing.
However, as the service condition of the servo motor becomes worse, the requirement on the overall protection level of the motor product is higher and higher, and the current common practice is to add an additional protection cover, but the assembly process is complex, the cost of the motor is increased, the overall heat dissipation of the motor is affected, and the service life of the motor is reduced.
For another example, patent No. 202020849911.2 of the utility model of the people's republic of China discloses a water-under-water sealed motor for running water power generation, which can ensure the tightness of a front end cover, a rear end cover and a shell by arranging a plurality of seals such as a first sealing ring, a second sealing ring, a sealing gasket and the like; through skeleton oil blanket and rubber pad and felt, can carry out multiple sealing to pivot and front end housing, rear end cap junction to strengthen the leakproofness of this motor. However, the motor still does not solve the sealing problem of the power cord introduced into the motor, and the sealing problem at the brake housing and the encoder housing.
Therefore, to solve the above-mentioned technical problems, it is necessary to provide an innovative servo motor to overcome the drawbacks of the prior art.
Disclosure of Invention
The utility model aims to provide a sealing structure of a servo motor, which is simple in structure, convenient to assemble, reliable in sealing performance and has IP67 protection level.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a sealing structure of a servo motor comprises a shell, a front end cover, a rear end cover, a rotating shaft, a brake cover, a signal wire connector and an encoder cover; wherein, the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the shell; the rotating shaft is pivoted on the front end cover and the rear end cover, and the brake is arranged at one end of the rotating shaft; the brake cover is covered on the brake; the signal wire connector is inserted on the encoder cover, and a sealing piece is arranged between the signal wire connector and the brake cover; the encoder cover is positioned on one side of the brake cover; the encoder cover is covered with a power line pressing cover, and a power line sealing gasket component is arranged between the encoder cover and the power line pressing cover. The sealing performance of the motor is reliable and the protection level is high by arranging a plurality of seals at the positions, such as the power line is led into the motor, between the brake cover and the rear end cover.
The sealing structure of the servo motor of the utility model is further provided with: the power line sealing gasket assembly comprises a sealing gasket I and a sealing gasket II; a plurality of semicircular power supply trunking is arranged on the sealing gasket I; the semicircular power supply wire slot is embedded on the encoder cover; a clamping groove is formed in the contact part of the sealing gasket II and the power line pressing cover, and is clamped on the power line pressing cover to limit the sealing gasket II; the sealing gasket II is provided with a semicircular power supply wire slot corresponding to the semicircular power supply wire slot of the sealing gasket I, so that the power supply wire is sealed and led into the motor.
The sealing structure of the servo motor of the utility model is further provided with: the sealing gasket I is paved between the encoder cover and the power line pressing cover, and the power line pressing cover is fastened by 5M 3 x 10 screws, so that the sealing is tight.
The sealing structure of the servo motor of the utility model is further provided with: the semicircular power supply trunking specifically is provided with 3, and the UVW three-phase line enters from 3 holes of the power supply wire sealing pad assembly and is in interference fit with the power supply wire sealing pad assembly so as to improve sealing effect.
The sealing structure of the servo motor of the utility model is further provided with: the sealing element between the signal wire connector and the brake cover is specifically a sealing gasket; the signal wire connector is a 14-piece signal wire connector, and a circle of groove is formed in the bottom of the signal wire connector; the sealing gasket is placed in the groove; the signal wire connector is fastened on the encoder cover through screws, and the sealing gasket is tightly attached to the end face of the encoder cover, so that reliable sealing is achieved.
The sealing structure of the servo motor of the utility model is further provided with: an O-shaped sealing ring is arranged between the brake cover and the rear end cover; one end of the brake cover is provided with a cover plate, and a brake sealing gasket is arranged between the cover plate and the brake cover; the inner side of the cover plate is provided with a convex rib which is abutted on the brake sealing gasket so as to strengthen sealing.
The sealing structure of the servo motor of the utility model is further provided with: a plurality of sealing plugs are symmetrically arranged on two sides of the brake sealing gasket; a plurality of brake mounting holes are formed in the brake cover; the sealing plug is plugged in the brake mounting hole to realize the sealing of the brake cover.
The sealing structure of the servo motor of the utility model is further provided with: the sealing plug is provided with a shrinkage hole so that the sealing plug has shrinkage interference, and the sealing plug is better sealed after being plugged in the brake mounting hole.
The sealing structure of the servo motor of the utility model is further provided with: the rotating shaft is pivoted on the front end cover and the rear end cover through sealing bearings; o-shaped sealing rings are arranged between the front end cover and the shell and between the rear end cover and the shell so as to improve the tightness between the front end cover and the shell and between the rear end cover and the shell.
The sealing structure of the servo motor is also provided with: the encoder cover and the brake cover are integrally formed, so that the manufacturing is convenient.
Compared with the prior art, the utility model has the following beneficial effects: the sealing structure of the servo motor is simple in structure and convenient to assemble, and the overall sealing performance of the servo motor is reliable through arranging a plurality of sealing structures such as a power line sealing gasket assembly, a brake sealing gasket, a sealing gasket and an O-shaped sealing ring, so that IP67 protection level can be achieved, an additional protective cover is not required, and the cost of the motor is reduced.
Drawings
Fig. 1 is a cross-sectional view of a sealing structure of a servo motor of the present utility model.
Fig. 2 is a partial enlarged view at a in fig. 1.
Fig. 3 is a partial enlarged view at B in fig. 1.
Fig. 4 is an exploded perspective view of a sealing structure of the servo motor of the present utility model.
Fig. 5 is a perspective view of the power cord gasket assembly of fig. 4.
Fig. 6 is a perspective view of the signal wire connector of fig. 4.
Fig. 7 is a schematic structural view of the cover plate in fig. 4.
Fig. 8 is a schematic structural view of the brake pad of fig. 4.
Fig. 9 is a partial cross-sectional view of a sealing structure of a servo motor of the present utility model.
Fig. 10 is a partial enlarged view at C in fig. 9.
Detailed Description
Referring to fig. 1 to 10 of the specification, the present utility model is a sealing structure of a servo motor, which is assembled by a casing 1, a front end cover 2, a rear end cover 3, a rotating shaft 4, a brake 5, a brake cover 6, a signal wire connector 7, an encoder cover 8, and other parts, and of course, the servo motor also includes a stator, a rotor, and other parts, which are not related to the purpose of the present utility model, and therefore are not described herein.
The front end cover 2 and the rear end cover 3 are respectively arranged at the front end and the rear end of the casing 1, specifically, O-shaped sealing rings 9 are respectively arranged between the front end cover 2 and the casing 1 and between the rear end cover 3 and the casing 1 so as to improve the tightness among the front end cover 2, the rear end cover 3 and the casing 1.
The rotating shaft 4 is pivoted on the front end cover 2 and the rear end cover 3 through a sealing bearing 10, and the sealing performance of the front end cover 2 and the rear end cover 3 is good through the sealing bearing 10.
The brake 5 is disposed at one end of the rotating shaft 4 and is located outside the rear end cover 3. The brake cover 6 is covered on the brake 5 and is mounted on the rear end cover 3. In the present embodiment, an O-ring 9 is also provided between the brake cover 6 and the rear cover 3, so that the brake cover 6 and the rear cover 3 are sealed.
The signal wire connector 7 is inserted on the encoder housing 8, and the 14-piece signal wire connector 7 is adopted, and the encoder wire, the brake wire, the temperature sensor wire and the like are welded to the 14-piece signal wire connector 7. In order to ensure tightness between the signal line connector 7 and the encoder housing 8, a seal, in this embodiment a sealing washer 11, is provided between the signal line connector 7 and the encoder housing 8. Specifically, a circle of grooves 71 are formed at the bottom of the signal wire connector 7; the sealing gasket 11 is placed in the groove 71. The signal wire connector 7 is fastened to the encoder housing 8 by a screw 72, and the sealing washer 11 is closely attached to the end surface of the encoder housing 8, thereby achieving a reliable seal.
The encoder housing 8 is located at one side of the brake housing 6, and the encoder housing and the brake housing are integrally formed, so that the brake housing is convenient to manufacture and install. The encoder housing 8 is covered with a power line pressing cover 81, and a power line sealing gasket assembly 12 is arranged between the encoder housing 8 and the power line pressing cover 81, so that the power line is sealed when the power line is led into the motor.
The power cord gasket assembly 12 is composed of a gasket I13 and a gasket II 14. A plurality of semicircular power supply trunking 15 are arranged on the sealing gasket I13; the semicircular power supply wire slot 15 is embedded in the encoder housing 8. The contact part of the sealing gasket II14 and the power line pressing cover 81 is provided with a clamping groove 16, and the clamping groove 16 is clamped on the power line pressing cover 81 so as to limit the sealing gasket II14 and fix the sealing gasket II with the power line pressing cover 81. Further, the sealing pad II14 is provided with a semicircular power line slot 15 corresponding to the semicircular power line slot 15 of the sealing pad I13. In this embodiment, 3 semicircular power line slots 15 are specifically provided, and when in wiring, UVW three-phase lines enter through 3 holes of the power line sealing pad assembly 12 and are in interference fit with the power line sealing pad assembly 12, so that three-phase power lines are led into the motor, and sealing effect is improved.
Further, the gasket I13 is laid between the encoder housing 8 and the power cord pressing cover 81, and the power cord pressing cover 81 is fastened by using 5M 3 x 10 screws 82, so that the encoder housing 8 and the power cord pressing cover 81 are tightly sealed.
A cover plate 61 is mounted to one end of the brake housing 6 to facilitate disassembly and maintenance of the brake 5. A brake gasket 17 is interposed between the cover plate 61 and the brake housing 6 to improve the sealing therebetween. The cover plate 61 is provided with a convex rib 62 on the inner side, and the convex rib 62 is abutted against the brake gasket 17 to strengthen the sealing performance of the brake gasket 17.
A plurality of sealing plugs 18 are symmetrically arranged on two sides of the brake sealing gasket 17; a plurality of brake mounting holes 63 are formed in the brake cover 6; the sealing plug 18 is plugged into the brake mounting hole 63 to effect sealing of the brake housing 6. The sealing plug 18 is provided with a shrinkage hole 19, so that the sealing plug 18 has shrinkage interference, and the sealing plug 18 is better sealed after being plugged in the brake mounting hole 63.
In summary, the sealing structure of the servo motor of the present utility model has the multi-seal structure including the power line gasket assembly 12, the brake gasket 17, the gasket 11, the O-ring 9, the sealing bearing 10, etc., so that the overall sealing performance of the motor is reliable, and the protection level is high.
The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model, but any modifications, equivalent substitutions, improvements, etc. within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (10)
1. A servo motor's seal structure, its characterized in that: the device comprises a shell, a front end cover, a rear end cover, a rotating shaft, a brake cover, a signal wire connector and an encoder cover; wherein, the front end cover and the rear end cover are respectively arranged at the front end and the rear end of the shell; the rotating shaft is pivoted on the front end cover and the rear end cover, and the brake is arranged at one end of the rotating shaft; the brake cover is covered on the brake; the signal wire connector is inserted on the encoder cover, and a sealing piece is arranged between the signal wire connector and the brake cover; the encoder cover is positioned on one side of the brake cover; the encoder cover is covered with a power line pressing cover, and a power line sealing gasket component is arranged between the encoder cover and the power line pressing cover.
2. The servo motor sealing structure as recited in claim 1, wherein: the power line sealing gasket assembly comprises a sealing gasket I and a sealing gasket II; a plurality of semicircular power supply trunking is arranged on the sealing gasket I; the semicircular power supply wire slot is embedded on the encoder cover; a clamping groove is formed in the contact part of the sealing gasket II and the power line pressing cover, and is clamped on the power line pressing cover to limit the sealing gasket II; and the sealing gasket II is provided with a semicircular power supply wire slot corresponding to the semicircular power supply wire slot of the sealing gasket I.
3. The sealing structure of a servo motor as recited in claim 2, wherein: the sealing gasket I is paved between the encoder cover and the power line pressing cover, and the power line pressing cover is fastened by 5M 3 x 10 screws.
4. The sealing structure of a servo motor as recited in claim 2, wherein: the semicircular power supply trunking is specifically provided with 3 UVW three-phase wires which enter through 3 holes of the power supply wire sealing pad assembly and are in interference fit with the power supply wire sealing pad assembly.
5. The servo motor sealing structure as recited in claim 1, wherein: the sealing element between the signal wire connector and the brake cover is specifically a sealing gasket; the signal wire connector is a 14-piece signal wire connector, and a circle of groove is formed in the bottom of the signal wire connector; the sealing gasket is placed in the groove; the signal wire connector is fastened on the encoder cover through screws, and the sealing gasket is tightly attached to the end face of the encoder cover.
6. The servo motor sealing structure as recited in claim 1, wherein: an O-shaped sealing ring is arranged between the brake cover and the rear end cover; one end of the brake cover is provided with a cover plate, and a brake sealing gasket is arranged between the cover plate and the brake cover; the inner side of the cover plate is provided with a convex rib which is abutted on the brake sealing gasket so as to strengthen sealing.
7. The servo motor sealing structure as recited in claim 6, wherein: a plurality of sealing plugs are symmetrically arranged on two sides of the brake sealing gasket; a plurality of brake mounting holes are formed in the brake cover; the sealing plug is plugged in the brake mounting hole.
8. The servo motor sealing structure as recited in claim 7, wherein: and the sealing plug is provided with a shrinkage hole.
9. The servo motor sealing structure as recited in claim 1, wherein: the rotating shaft is pivoted on the front end cover and the rear end cover through sealing bearings; o-shaped sealing rings are arranged between the front end cover and the shell and between the rear end cover and the shell.
10. The servo motor sealing structure as recited in claim 1, wherein: the encoder housing and the brake housing are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320506731.8U CN219592214U (en) | 2023-03-16 | 2023-03-16 | Sealing structure of servo motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320506731.8U CN219592214U (en) | 2023-03-16 | 2023-03-16 | Sealing structure of servo motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219592214U true CN219592214U (en) | 2023-08-25 |
Family
ID=87698699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320506731.8U Active CN219592214U (en) | 2023-03-16 | 2023-03-16 | Sealing structure of servo motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219592214U (en) |
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2023
- 2023-03-16 CN CN202320506731.8U patent/CN219592214U/en active Active
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