AU2015101364A4 - A Sealing and dust-proof structure for electric push rod - Google Patents
A Sealing and dust-proof structure for electric push rod Download PDFInfo
- Publication number
- AU2015101364A4 AU2015101364A4 AU2015101364A AU2015101364A AU2015101364A4 AU 2015101364 A4 AU2015101364 A4 AU 2015101364A4 AU 2015101364 A AU2015101364 A AU 2015101364A AU 2015101364 A AU2015101364 A AU 2015101364A AU 2015101364 A4 AU2015101364 A4 AU 2015101364A4
- Authority
- AU
- Australia
- Prior art keywords
- annular wall
- wall part
- fit
- sealing
- sealing cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Abstract
Abstract Title: A Sealing and Dust-proof Structure for Electric Push Rod The invention relates to a sealing and dust-proof structure for an electric push rod, which belongs to the technical field of production and manufacturing of electric push rods. The sealing and dust-proof structure comprises a reduction gearbox at the back end of the electric push rod and a motor in fit with the input end of the reduction gearbox, the reduction gearbox is used for forming an annular wall part on the periphery of the part for being in input fit with the motor, an external thread is formed on the outer surface of the annular wall part, a plurality of single-direction outer clamping bulges which are in the same screwing direction with the external thread are formed at the end part of the annular wall part, the motor is accommodated in a cup-shaped sealing cover, an internal thread in fit with the external thread of the annular wall part is formed on the inner wall at the open end of the sealing cover, and inner clamping bulges which are in fit with the outer clamping bulges of the annular wall part are formed at the root part of the internal thread; when the sealing cover is in fit with the annular wall part, the open end part of the sealing cover is in close contact with the seal ring of the annular wall part for sealing the two through the fit between the internal thread and the external thread, and the inner clamping bulges of the sealing cover are in fit with the outer clamping bulges of the annular wall part so as to enable the sealing cover to only rotate to the screwing-up direction. 1'
Description
Description A Sealing and Dust-proof Structure for Electric Push Rod Technical Field The invention relates to a sealing and dust-proof structure for an electric push rod, which belongs to the technical field of production and manufacturing of electric push rods. Background of the Invention Under certain application occasions, sealing and dust-proof requirements on electric push rod motors are higher, in the prior art, the electric push rod motors often need to be in direct contact with application environments, so that the existing electric push rods are difficult to meet the demands of the application occasions with higher sealing and dust-proof requirements on the electric push rod motors. Summary of the Invention The invention aims at providing a sealing and dust-proof structure for an electric push rod, which has better sealing and dust-proof effect for a motor and a reduction gearbox, and can meet demands of application occasions with higher sealing and dust-proof requirements on the motors
I
and further solve the problems that the existing electric push rod is difficult to meet the demands of the application occasions with the higher sealing and dust-proof requirements on the electric push rod motors and the like. The above technical purpose of the invention is mainly solved through the following technical scheme: the sealing and dust-proof structure comprises a reduction gearbox at the back end of the electric push rod and a motor in fit with the input end of the reduction gearbox, and the sealing and dust-proof structure is characterized in that the reduction gearbox is used for forming an annular wall part on the periphery of the part for being in input fit with the motor, an external thread is formed on the outer surface of the annular wall part, a plurality of single-direction outer clamping bulges which are in the same screwing direction with the external thread are formed at the end part of the annular wall part, the motor is accommodated in a cup-shaped sealing cover, an internal thread in fit with the external thread of the annular wall part is formed on the inner wall at the open end of the sealing cover, and inner clamping bulges which are in fit with the outer clamping bulges of the annular wall part are formed at the root part of the internal thread; when the sealing cover is in fit with the annular wall part, the open end part of the sealing cover is in close contact with the seal ring of the annular wall part for sealing the two through the fit between the internal thread and the external thread, 2 and the inner clamping bulges of the sealing cover are in fit with the outer clamping bulges of the annular wall part so as to enable the sealing cover to only rotate to the screwing-up direction, thereby preventing the sealing cover from rotating to the direction which is reverse to the screwing-up direction, that is the unscrewing direction, further ensuring reliable sealing between the sealing cover and the annular wall part of the reduction gearbox, ensuring the sealing of the motor positioned in the sealing cover and the sealing of the reduction gearbox and meeting the demands of the application occasions with the higher sealing and dust-proof requirements on the motors. Preferably, an annular step is formed at the root part of the external thread of the annular wall part, a seal ring is sheathed on the part corresponding to the annular step of the annular wall part, and the seal ring is in contact with the end surface of the sealing cover. Wherein, the seal ring can further improve the sealing and dust-proof effect for the motor. Preferably, the plurality of the single-direction outer clamping bulges at the end part of the annular wall part and the plurality of the inner clamping bulges at the root part of the internal thread of the sealing cover are distributed along circumferential direction at equal spacing intervals. Therefore, the invention has the characteristics of having better sealing and dust-proof effect for the motor and the reduction gearbox, meeting the demands of the application occasions with the higher sealing and 3 dust-proof requirements on the motors. Brief Description of the Drawings Figure 1 is a schematic diagram of structure of the invention. Detailed Description of the Invention In combination of the figures, the technical scheme of the invention is further specifically described through the following embodiment. Embodiment 1: as shown in Figure 1, the input end of a reduction gearbox 1 at the back end of an electric push rod is in fit with a motor 2, the reduction gearbox 1 is used for forming an annular wall part 3 on the periphery of the part for being in input fit with the motor 2, an external thread 4 is formed on the outer surface of the annular wall part 3, an annular step 5 is formed at the root part of the external thread 4, a seal ring is sheathed on the part corresponding to the annular step 5 (not shown in the figure), a plurality of single-direction outer clamping bulges 6 which are in the same screwing direction with the external thread 4 and distributed along the circumferential direction at equal spacing intervals are formed at the end part of the annular wall part 3, the motor 2 is accommodated in a cup-shaped sealing cover 7, an internal thread 8 in fit with the external thread 4 of the annular wall part is formed on the inner 4 wall at the open end of the sealing cover 7, and inner clamping bulges 9 which are distributed along the circumferential direction at the equal spacing intervals and in fit with the outer clamping bulges 6 of the annular wall part are formed at the root part of the internal thread 8; when the sealing cover 7 is in fit with the annular wall part 3, the seal ring is in contact with the end surface of the sealing cover, the open end part of the sealing cover is in close contact with the seal ring of the annular wall part for sealing the two through the fit between the internal thread and the external thread, and the inner clamping bulges of the sealing cover are in fit with the outer clamping bulges of the annular wall part so as to enable the sealing cover to only rotate to the screwing-up direction, thereby ensuring reliable sealing between the sealing cover and the annular wall part of the reduction gearbox, ensuring the sealing of the motor positioned in the sealing cover and the sealing of the reduction gearbox and meeting the demands of application occasions with higher sealing and dust-proof requirements on the motors. 5
Claims (2)
1. A sealing and dust-proof structure for an electric push rod, comprising a reduction gearbox at the back end of the electric push rod and a motor in fit with the input end of the reduction gearbox, characterized in that the reduction gearbox is used for forming an annular wall part on the periphery of the part for being in input fit with the motor, an external thread is formed on the outer surface of the annular wall part, a plurality of single-direction outer clamping bulges which are in the same screwing direction with the external thread are formed at the end part of the annular wall part, the motor is accommodated in a cup-shaped sealing cover, an internal thread in fit with the external thread of the annular wall part is formed on the inner wall at the open end of the sealing cover, and inner clamping bulges which are in fit with the outer clamping bulges of the annular wall part are formed at the root part of the internal thread; when the sealing cover is in fit with the annular wall part, the open end part of the sealing cover is in close contact with the seal ring of the annular wall part for sealing the two through the fit between the internal thread and the external thread, and the inner clamping bulges of the sealing cover are in fit with the outer clamping bulges of the annular wall part so as to enable the sealing cover to only rotate to the screwing-up direction, the plurality of the single-direction outer clamping bulges at the end part of the annular wall part and the plurality of the inner clamping bulges at the root 6 part of the internal thread of the sealing cover are distributed along circumferential direction at equal spacing intervals.
2. The sealing and dust-proof structure for the electric push rod according to claim 1, characterized in that an annular step is formed at the root part of the external thread of the annular wall part, a seal ring is sheathed on the part corresponding to the annular step of the annular wall part, and the seal ring is in contact with the end surface of the sealing cover. 7
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2015101364A AU2015101364A4 (en) | 2015-09-21 | 2015-09-21 | A Sealing and dust-proof structure for electric push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2015101364A AU2015101364A4 (en) | 2015-09-21 | 2015-09-21 | A Sealing and dust-proof structure for electric push rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2015101364A4 true AU2015101364A4 (en) | 2015-11-05 |
Family
ID=54595735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2015101364A Ceased AU2015101364A4 (en) | 2015-09-21 | 2015-09-21 | A Sealing and dust-proof structure for electric push rod |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2015101364A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491698A (en) * | 2019-10-10 | 2019-11-22 | 上海华晟电器有限公司 | A kind of portable waterproof travel switch |
-
2015
- 2015-09-21 AU AU2015101364A patent/AU2015101364A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110491698A (en) * | 2019-10-10 | 2019-11-22 | 上海华晟电器有限公司 | A kind of portable waterproof travel switch |
| CN110491698B (en) * | 2019-10-10 | 2024-03-29 | 上海华晟电器有限公司 | Portable waterproof travel switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |