CN111740539B - Pneumatic speed reducing motor - Google Patents

Pneumatic speed reducing motor Download PDF

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Publication number
CN111740539B
CN111740539B CN202010708093.9A CN202010708093A CN111740539B CN 111740539 B CN111740539 B CN 111740539B CN 202010708093 A CN202010708093 A CN 202010708093A CN 111740539 B CN111740539 B CN 111740539B
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CN
China
Prior art keywords
annular
reduction gear
cavity
shaft
gear
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Active
Application number
CN202010708093.9A
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Chinese (zh)
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CN111740539A (en
Inventor
朱伟
吴永志
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ZHONGZHI ELECTRIC NANJING Co.,Ltd.
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Zhongzhi Electric Nanjing Co ltd
Priority date (The priority date 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 date listed.)
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Priority to CN202010708093.9A priority Critical patent/CN111740539B/en
Publication of CN111740539A publication Critical patent/CN111740539A/en
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Publication of CN111740539B publication Critical patent/CN111740539B/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
    • E06B9/40—Roller blinds
    • E06B9/42—Parts or details of roller blinds, e.g. suspension devices, blind boxes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
    • E06B9/68—Operating devices or mechanisms, e.g. with electric drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
    • F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
    • F16H1/203—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with non-parallel axes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears

Abstract

The invention relates to the field of speed reducing mechanisms, in particular to an air pressure speed reducing motor, which comprises: lid, lower casing, transmission gear assembly, reduction gear part includes: reduction gear, vallecular cavity, annular blow vent, pivot, annular axle, ring sleeve, lug, atmospheric pressure compression subassembly, the atmospheric pressure compression subassembly includes: the invention controls the speed of the motor by controlling the content of air in a hollow area between the inner peripheral wall of the groove cavity of the reduction gear and the periphery of the reduction gear, namely, the pressure and friction of the air on the peripheral wall of the reduction gear are realized by air pressure control, and further the speed of the motor is controlled.

Description

Pneumatic speed reducing motor
Technical Field
The invention relates to the field of speed reducing mechanisms, in particular to an air pressure speed reducing motor.
Background
The speed reducing motor is widely applied to various fields, for example, in the field of vehicles, the motor is used for controlling the lifting of window curtains or window glass and the like, the self gravity needs to be overcome when the curtain is lifted, and the self gravity is added when the curtain is lifted, so that the lifting speed of the curtain is different, and the self running speed of the motor is not easy to realize by changing.
Therefore, the above problem is solved by providing the speed reduction mechanism of the reduction motor.
Disclosure of Invention
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a pneumatic deceleration motor which can achieve a uniform ascending and descending speed of a window curtain. The invention achieves the above purpose through the following technical scheme.
A pneumatic geared motor, comprising: lid, lower casing, transmission gear assembly, reduction gear part.
The transmission gear assembly and the reduction gear part are arranged in the inner cavity of the lower shell, the reduction gear part is meshed with the transmission gear assembly, the transmission gear assembly is in transmission connection with the motor, the cover body covers the inner cavity of the lower shell, and the transmission gear assembly comprises: the pinion is meshed with the transmission gear respectively on the worm on the output shaft of the motor.
The reduction gear part includes: the device comprises a reduction gear, a groove cavity, an annular vent, a rotating shaft, an annular sleeve, a bump and an air pressure compression assembly; the reduction gear is of a gear structure with a groove cavity, the inner part of the area between the inner peripheral wall of the groove cavity and the periphery of the reduction gear is hollow, an annular air vent is formed in the inner peripheral wall of the groove cavity and is communicated with the hollow area in the reduction gear; the fixed groove intracavity portion that sets up at reduction gear of pivot, the pivot is with the axle center with reduction gear, the one end of pivot is rotated and is set up in the axle hole of casing inner chamber down, the fixed inslot intracavity portion that sets up at reduction gear of annular axle, and set up the periphery at the pivot, set up the external screw thread on the periphery wall of annular axle, the ring conduit sets up the periphery wall at the annular axle, set up the internal thread on the ring conduit internal perisporium, the internal thread of ring conduit interlocks with the external screw thread of annular axle mutually, the one end of keeping away from the groove chamber on the ring conduit internal perisporium sets up the lug, the lug inserts in the outstanding spout of the inner chamber of casing down.
The pneumatic compression assembly includes: the annular air cavity, the annular bulge, the annular air outlet and the annular moving piece; the inside gas that is full of annular air cavity, the cambered surface circumference lateral wall of annular air cavity is made for flexible rubber, the terminal surface of annular air cavity is made for hard rubber, this terminal surface is fixed to be set up under on the inner chamber lateral wall of casing, another terminal surface seamless connection annular bellying of annular air cavity, the inside cavity of annular bellying, and with the inside intercommunication of annular air cavity, set up annular gas outlet on the outer peripheral face of annular bellying, annular bellying periphery extends to in the annular vent of vallecular cavity, annular bellying lateral wall passes through rotary seal swing joint (rotary seal does not show) with annular vent, make reduction gear's rotation not influenced by annular bellying, the annular moving piece sets up the interior week in annular air cavity, and with the interior week lateral wall flexonics of annular air cavity, when the annular moving piece round trip movement, the cambered surface wall of annular air cavity can.
As an implementation mode, a spline shaft is fixedly arranged on the end surface of the reduction gear, and one end of the spline shaft penetrates through a through hole in the cover body to be connected with an external mechanism.
As an implementation mode, the annular rubber pad is arranged on the inner wall of the groove cavity of the reduction gear, and the arrangement enables one end of the annular sleeve to abut against the inner wall of the groove cavity of the reduction gear, so that when the inner wall of the groove cavity is squeezed and rubbed, the inner wall of the groove cavity of the reduction gear cannot be abraded.
The invention has the following beneficial effects:
1. according to the arrangement of the speed reducing gear part, the speed reducing gear drives the annular shaft to do simple reciprocating motion to realize acceleration and deceleration motion, when the annular sleeve moves and pushes the annular moving piece, so that the annular air cavity is compressed, air gradually fills a hollow area between the inner peripheral wall of the groove cavity and the periphery of the speed reducing gear, the speed reducing gear generates resistance due to the influence of air pressure and friction in the hollow area, and at the moment, the load of the motor is increased, so that the rotating speed is reduced; when the annular sleeve moves towards the direction of the inner wall of the groove cavity and the annular air cavity gradually expands and expands, the air in the hollow area between the inner peripheral wall of the groove cavity and the periphery of the reduction gear is gradually reduced, the air pressure and friction on the reduction gear are reduced, so that the resistance of the reduction gear disappears, the load of the motor is reduced, the rotating speed is increased, and thus, the ascending and descending speeds of the car window curtain are finally consistent;
2. the invention controls the speed of the motor by controlling the content of air in the hollow area between the inner peripheral wall of the groove cavity of the reduction gear and the periphery of the reduction gear, namely, the pressure and friction of the air on the peripheral wall of the reduction gear are realized by air pressure control, and further the speed of the motor is controlled.
Drawings
Fig. 1 is a schematic view of an overall structure of the pneumatic deceleration motor according to the present invention after the cover is opened.
Fig. 2 is a schematic cross-sectional view of the pneumatic deceleration motor according to the present invention after the cover is opened.
Fig. 3 is a first schematic structural diagram of the lower housing and the reduction gear part of the present invention.
Fig. 4 is a second schematic structural view of the lower housing and the reduction gear part of the present invention.
Fig. 5 is a schematic view showing a detailed structure of the reduction gear part of the present invention.
Fig. 6 is a schematic structural view of a pneumatic compression assembly according to the present invention.
Description of reference numerals:
1. a cover body; 2. a lower housing; 21. an inner cavity; 3. a transmission gear assembly; 31. a pinion gear; 32. a transmission gear; 4. a reduction gear part; 41. a reduction gear; 42. a slot cavity; 421. an annular rubber pad; 43. an annular vent; 44. a rotating shaft; 45. an annular shaft; 46. an annular sleeve; 47. a bump; 48. a pneumatic compression assembly; 481. an annular air cavity; 482. an annular boss; 483. an annular air outlet; 484. an annular moving plate; 49. a spline shaft; 5. a motor; 51. a worm.
Detailed Description
Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those embodiments can be easily implemented by those having ordinary skill in the art to which the present invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. In addition, in order to more clearly describe the present invention, components not connected to the present invention will be omitted from the drawings.
As shown in fig. 1, a pneumatic deceleration motor includes: lid 1, lower casing 2, transmission gear subassembly 3, reduction gear part 4.
As shown in fig. 2, the transmission gear assembly 3 and the reduction gear assembly 4 are disposed in the inner cavity 21 of the lower housing 2, the reduction gear assembly 4 is engaged with the transmission gear assembly 3, the transmission gear assembly 3 is in transmission connection with the motor 5, the cover body 1 covers the inner cavity 21 of the lower housing 2, and the transmission gear assembly 3 includes: the pinion 31 and the transmission gear 32, the pinion 31 is respectively meshed with the worm 51 on the output shaft of the motor 5 and the transmission gear 32, and finally the driving force of the motor 5 is transmitted to the reduction gear part 4; the transmission gear assembly 3 is well known in the art and will not be described in detail herein.
As shown in fig. 3 to 5, the reduction gear part 4 includes: reduction gear 41, slot cavity 42, annular vent 43, rotating shaft 44, annular shaft 45, annular sleeve 46, lug 47 and pneumatic compression assembly 48; the reduction gear 41 is of a gear structure with a groove cavity 42, the inner part of the area between the inner peripheral wall of the groove cavity 42 and the outer periphery of the reduction gear 41 is hollow, an annular vent hole 43 is formed in the inner peripheral wall of the groove cavity 42, and the annular vent hole 43 is communicated with the hollow area in the reduction gear 41; the rotating shaft 44 is fixedly arranged in the groove cavity 42 of the reduction gear 41, the rotating shaft 44 and the reduction gear 41 are coaxial, one end of the rotating shaft 44 is rotatably arranged in the shaft hole 22 of the inner cavity 21 of the lower shell 2, the annular shaft 45 is fixedly arranged in the groove cavity 42 of the reduction gear 41 and is arranged at the periphery of the rotating shaft 44, an external thread is arranged on the peripheral wall of the annular shaft 45, the annular sleeve 46 is arranged on the peripheral wall of the annular shaft 45, an internal thread is arranged on the inner peripheral wall of the annular sleeve 46, the internal thread of the annular sleeve 46 is meshed with the external thread of the annular shaft 45, a lug 47 is arranged at one end, far away from the groove cavity 42, of the inner peripheral wall of the annular sleeve 46, the lug 47 is inserted into the protruding chute 23 of the inner cavity 21 of the lower shell 2; when the motor 5 drives the reduction gear 41 to rotate forward, the annular sleeve 46 moves along the annular shaft 45 toward the end away from the slot 42, and when the motor 5 drives the reduction gear 41 to rotate backward, the annular sleeve 46 moves along the annular shaft 45 toward the end close to the slot 42.
As shown in fig. 6, the pneumatic compression assembly 48 includes: an annular air cavity 481, an annular convex part 482, an annular air outlet 483 and an annular moving piece 484; the annular air cavity 481 is filled with air, the arc circumferential side wall of the annular air cavity 481 is made of flexible rubber, the end face of the annular air cavity 481 is made of hard rubber and is fixedly arranged on the side wall of the inner cavity 21 of the lower shell 2, the other end face of the annular air cavity 481 is connected with the annular bulge 482 in a seamless manner, the annular bulge 482 is hollow and is communicated with the inside of the annular air cavity 481, the outer circumferential surface of the annular bulge 482 is provided with an annular air outlet 483, the outer circumference of the annular bulge 482 extends into the annular air vent 43 of the groove cavity 42, so that the annular air cavity 481 is communicated with the inner area of the annular air vent 43 on the inner circumferential wall of the groove cavity 42, the side wall of the annular bulge 482 is movably connected with the annular air vent 43 through a rotary sealing ring (the rotary sealing ring is not shown), the rotation of the speed reduction gear 41 is not influenced by the annular bulge 482, and is flexibly connected with the inner peripheral side wall of the annular air cavity 481, when the annular moving piece 484 moves back and forth, the arc wall of the annular air cavity 481 can freely contract; in the initial state, one end of the annular sleeve 46 abuts against the side wall of the annular moving piece 484, and the other end of the annular sleeve 46 is close to the inner wall of the groove cavity 42 of the reduction gear 41; when the motor 5 drives the reduction gear 41 to rotate forward, the annular sleeve 46 moves towards the direction of the annular moving piece 484 to push the annular moving piece 484, so that the annular air cavity 481 is compressed, the gas in the annular air cavity 481 is compressed into the annular vent 43, the gas gradually fills the hollow area between the inner peripheral wall of the groove cavity 42 and the outer periphery of the reduction gear 41, the speed of the reduction gear 41 is gradually reduced due to the gas pressure in the hollow area, until the gas completely fills the hollow area between the inner peripheral wall of the groove cavity 42 and the outer periphery of the reduction gear 41, and the annular moving piece 484 cannot push, the reduction gear 41 stops rotating; when the motor 5 drives the reduction gear 41 to rotate reversely, the annular sleeve 46 moves towards the inner wall of the groove cavity 42, so that the annular air cavity 481 gradually expands, the air in the hollow area between the inner peripheral wall of the groove cavity 42 and the outer periphery of the reduction gear 41 gradually decreases, the air pressure borne by the reduction gear 41 decreases, the speed of the reduction gear 41 gradually increases, and until one end of the annular sleeve 46 abuts against the inner wall of the groove cavity 42 of the reduction gear 41, the inner wall of the groove cavity 42 is subjected to extrusion friction, and the reduction gear 41 stops rotating; a spline shaft 49 is fixedly arranged on the end face of the reduction gear 41, and one end of the spline shaft 49 passes through a through hole on the cover body 1 to be connected with an external mechanism. In this embodiment, the external mechanism is a window curtain.
As shown in fig. 5, it is preferable that, as an implementation mode, the inner wall of the groove cavity 42 of the reduction gear 41 is provided with an annular rubber pad 421, and this arrangement makes one end of the annular sleeve 46 abut against the inner wall of the groove cavity 42 of the reduction gear 41, so that when the inner wall of the groove cavity 42 is pressed and rubbed, the inner wall of the groove cavity 42 of the reduction gear 41 is not abraded.
The working principle of the invention is as follows:
when the motor 5 is driven to rotate by the transmission gear assembly 3, an external mechanism (such as a window curtain) is driven to move, when the curtain descends, the motor 5 drives the reduction gear 41 to rotate forward, the annular sleeve 46 moves towards the direction of the annular moving piece 484 to push the annular moving piece 484, so that the annular air cavity 481 is compressed, the air in the annular air cavity 481 is compressed into the annular air port 43, so that the air gradually fills the hollow area between the inner peripheral wall of the groove cavity 42 and the periphery of the reduction gear 41, the speed of the reduction gear 41 is reduced due to the air pressure in the hollow area, at the moment, the load of the motor 5 is increased, the rotating speed is reduced, until the air completely fills the hollow area between the inner peripheral wall of the groove cavity 42 and the periphery of the reduction gear 41, and when the annular moving piece 484 cannot be pushed, the reduction gear 41 stops rotating, the motor 5 blocks rotation; when the window curtain rises, the motor 5 drives the reduction gear 41 to rotate reversely, the annular sleeve 46 moves towards the inner wall of the groove cavity 42, so that the annular air cavity 481 gradually expands and expands, the air in the hollow area between the inner peripheral wall of the groove cavity 42 and the outer periphery of the reduction gear 41 gradually decreases, the air pressure borne by the reduction gear 41 decreases, the speed of the reduction gear 41 gradually increases, the load of the motor 5 decreases, the rotating speed increases, until one end of the annular sleeve 46 abuts against the inner wall of the groove cavity 42 of the reduction gear 41, so that the inner wall of the groove cavity 42 is subjected to extrusion friction, the reduction gear 41 stops rotating, the motor 5 blocks rotation, and the window curtain stops moving, so that the rising and falling speeds of the window curtain finally reach the same speed.

Claims (4)

1. A pneumatic geared motor, comprising: the gear cover comprises a cover body (1), a lower shell (2), a transmission gear component (3) and a speed reduction gear component (4); the method is characterized in that: transmission gear subassembly (3) and reduction gear part (4) set up in inner chamber (21) of casing (2) down, reduction gear part (4) and transmission gear subassembly (3) meshing, and transmission gear subassembly (3) are connected with motor (5) transmission, and inner chamber (21) of casing (2) down are covered in lid (1), and transmission gear subassembly (3) include: pinion (31), drive gear (32), the worm (51) and the drive gear (32) meshing respectively on motor (5) output shaft of pinion (31), reduction gear part (4) includes: the device comprises a reduction gear (41), a groove cavity (42), an annular air vent (43), a rotating shaft (44), an annular shaft (45), an annular sleeve (46), a lug (47) and an air pressure compression assembly (48); the reduction gear (41) is of a gear structure with a groove cavity (42), the inner part of the area between the inner peripheral wall of the groove cavity (42) and the outer periphery of the reduction gear (41) is hollow, an annular vent hole (43) is formed in the inner peripheral wall of the groove cavity (42), the annular vent hole (43) is communicated with the hollow area in the reduction gear (41), a rotating shaft (44) is fixedly arranged in the groove cavity (42) of the reduction gear (41), the rotating shaft (44) and the reduction gear (41) are coaxial, one end of the rotating shaft (44) is rotatably arranged in a shaft hole (22) of an inner cavity (21) of the lower shell (2), an annular shaft (45) is fixedly arranged in the groove cavity (42) of the reduction gear (41) and is arranged at the outer periphery of the rotating shaft (44), an external thread is arranged on the outer peripheral wall of the annular shaft (45), an annular sleeve (46) is arranged on the outer peripheral wall of the annular shaft (45), and an internal thread is arranged on the inner peripheral, the internal thread of ring sleeve (46) meshes with the external thread of annular axle (45) mutually, and the one end of keeping away from vallecular cavity (42) on the internal perisporium of ring sleeve (46) sets up lug (47), and lug (47) insert down in protruding spout (23) of inner chamber (21) of casing (2), and atmospheric pressure compression subassembly (48) include: the annular air cavity (481), the annular bulge (482), the annular air outlet (483), the annular movable plate (484), the annular air cavity (481) is filled with air, the arc circumferential side wall of the annular air cavity (481) is made of flexible rubber, the end face of the annular air cavity (481) is made of hard rubber, the end face is fixedly arranged on the side wall of the inner cavity (21) of the lower shell (2), the other end face of the annular air cavity (481) is connected with the annular bulge (482) in a seamless way, the annular bulge (482) is hollow, and with annular air cavity (481) inside intercommunication, offer annular gas outlet (483) on the outer peripheral face of annular bulge (482), annular bulge (482) periphery extends to in annular air vent (43) of cell cavity (42), annular movable plate (484) set up the inner periphery in annular air cavity (481), and with the interior peripheral wall flexible coupling of annular air cavity (481).
2. A pneumatic deceleration motor according to claim 1, wherein: the side wall of the annular bulge (482) is movably connected with the annular vent (43) through a rotary sealing ring.
3. A pneumatic deceleration motor according to claim 1, wherein: a spline shaft (49) is fixedly arranged on the end face of the reduction gear (41), and one end of the spline shaft (49) penetrates through a through hole in the cover body (1) to be connected with an external mechanism.
4. A pneumatic deceleration motor according to claim 1, wherein: an annular rubber pad (421) is arranged on the inner wall of a groove cavity (42) of the reduction gear (41).
CN202010708093.9A 2020-07-22 2020-07-22 Pneumatic speed reducing motor Active CN111740539B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010708093.9A CN111740539B (en) 2020-07-22 2020-07-22 Pneumatic speed reducing motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010708093.9A CN111740539B (en) 2020-07-22 2020-07-22 Pneumatic speed reducing motor

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CN111740539A CN111740539A (en) 2020-10-02
CN111740539B true CN111740539B (en) 2021-01-29

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170335923A1 (en) * 2016-05-23 2017-11-23 Universal Motion Components Co., Inc. Gearbox with internal diaphragm
CN207921295U (en) * 2017-12-05 2018-09-28 台州旺发机电有限公司 A kind of Exhaust screw applied on aerator reduction gear box
CN207921299U (en) * 2018-03-16 2018-09-28 江铃汽车股份有限公司 Gearbox water-tight device
CN209539989U (en) * 2019-01-23 2019-10-25 江苏御传新能源科技有限公司 Labyrinth type reduction-gear housing and retarder
CN209761664U (en) * 2019-04-18 2019-12-10 陆飞 Compact noise reduction movement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012026474A (en) * 2010-07-20 2012-02-09 Keihin Corp Electric actuator device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170335923A1 (en) * 2016-05-23 2017-11-23 Universal Motion Components Co., Inc. Gearbox with internal diaphragm
CN207921295U (en) * 2017-12-05 2018-09-28 台州旺发机电有限公司 A kind of Exhaust screw applied on aerator reduction gear box
CN207921299U (en) * 2018-03-16 2018-09-28 江铃汽车股份有限公司 Gearbox water-tight device
CN209539989U (en) * 2019-01-23 2019-10-25 江苏御传新能源科技有限公司 Labyrinth type reduction-gear housing and retarder
CN209761664U (en) * 2019-04-18 2019-12-10 陆飞 Compact noise reduction movement

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