阅读说明：本技术 一种直线推杆步进电机减速箱结构 (Reduction gearbox structure of linear push rod stepping motor ) 是由 钟木生 杨俊文 张树庭 于 2021-01-06 设计创作，主要内容包括：本发明公开了一种直线推杆步进电机减速箱结构,其包括步进电机、减速箱组件,减速箱组件包括减速箱主体,减速箱主体内部开设主体容置腔,减速箱主体前端部装设减速箱盖板；主体容置腔内嵌装减速齿轮组、活动齿条,减速齿轮组包括有装设于步进电机的动力输出轴的输入端齿轮、呈水平横向布置的输出端齿轮,输入端齿轮与输出端齿轮驱动连接,输出端齿轮与活动齿条相啮合；活动齿条的推杆安装孔内嵌装滑移推杆,滑移推杆后端部穿过减速箱主体的主体长圆孔并延伸至减速箱主体后端侧,滑移推杆前端部穿过减速箱盖板的盖板长圆孔并延伸至减速箱盖板前端侧。通过上述结构设计,本发明具有设计新颖、结构紧凑的优点,且能够稳定地实现带载推动。(The invention discloses a linear push rod stepping motor reduction gearbox structure which comprises a stepping motor and a reduction gearbox assembly, wherein the reduction gearbox assembly comprises a reduction gearbox main body, a main body accommodating cavity is formed in the reduction gearbox main body, and a reduction gearbox cover plate is arranged at the front end part of the reduction gearbox main body; a reduction gear set and a movable rack are embedded in the main body accommodating cavity, the reduction gear set comprises an input end gear arranged on a power output shaft of the stepping motor and an output end gear horizontally and transversely arranged, the input end gear is in driving connection with the output end gear, and the output end gear is meshed with the movable rack; the rear end part of the sliding push rod penetrates through the main body slotted hole of the speed reduction box main body and extends to the rear end side of the speed reduction box main body, and the front end part of the sliding push rod penetrates through the cover plate slotted hole of the speed reduction box cover plate and extends to the front end side of the speed reduction box cover plate. Through the structural design, the belt-loaded push mechanism has the advantages of novel design and compact structure, and can stably realize belt-loaded pushing.)

1. The utility model provides a linear push rod step motor reducing gear box structure which characterized in that: the gearbox comprises a stepping motor (1) and a gearbox component, wherein the gearbox component comprises a gearbox main body (2), a main body accommodating cavity (21) with a forward opening is formed in the gearbox main body (2), a gearbox cover plate (3) is arranged at the front end opening of the main body accommodating cavity (21) at the front end part of the gearbox main body (2), the stepping motor (1) is arranged in the gearbox main body (2), and a power output shaft of the stepping motor (1) extends into the main body accommodating cavity (21);

a reduction gear set (4) and a movable rack (5) positioned beside the reduction gear set (4) are embedded in a main body accommodating cavity (21) of the reduction box main body (2), the reduction gear set (4) comprises an input end gear (41) arranged on a power output shaft of the stepping motor (1) and an output end gear (42) horizontally and transversely arranged, the input end gear (41) is in driving connection with the output end gear (42), and the output end gear (42) is meshed with the movable rack (5);

the movable rack (5) is provided with two rack guide holes (51) which are arranged at intervals front and back and completely penetrate up and down respectively, the reduction gearbox main body (2) is provided with guide posts (6) which are arranged vertically corresponding to the rack guide holes (51), and the guide posts (6) are respectively embedded in the corresponding rack guide holes (51) of the movable rack (5); the movable rack (5) is further provided with a push rod mounting hole (52) which is completely penetrated in the front and back direction, a sliding push rod (7) which is in a straight rod shape and extends along the front and back direction is embedded in the push rod mounting hole (52), the front end part of the sliding push rod (7) extends to the front end side of the movable rack (5), and the rear end part of the sliding push rod (7) extends to the rear end side of the movable rack (5);

the reduction gearbox main body (2) is provided with a main body slotted hole (22) which is completely penetrated in the front and back and vertically extends corresponding to the sliding push rod (7), and the rear end part of the sliding push rod (7) penetrates through the main body slotted hole (22) and extends to the rear end side of the reduction gearbox main body (2); the cover plate (3) of the speed reduction box is provided with a cover plate slotted hole (31) which is completely penetrated in the front and back and vertically extends corresponding to the sliding push rod (7), and the front end part of the sliding push rod (7) penetrates through the cover plate slotted hole (31) and extends to the front end side of the cover plate (3) of the speed reduction box.

2. The reduction gearbox structure of the linear push rod stepping motor according to claim 1, characterized in that: the reduction gear set (4) further comprises a first duplicate gear (43), a second duplicate gear (44) and a third duplicate gear (45), the input end gear (41) is meshed with a large gear of the first duplicate gear (43), a small gear of the first duplicate gear (43) is meshed with a large gear of the second duplicate gear (44), a small gear of the second duplicate gear (44) is meshed with a large gear of the third duplicate gear (45), and a small gear of the third duplicate gear (45) is meshed with the output end gear (42);

a first gear shaft (461), a second gear shaft (462), a third gear shaft (463) and a fourth gear shaft (464) are clamped between the reduction box cover plate (3) and the reduction box main body (2), a first duplicate gear (43) is sleeved on the first gear shaft (461), a second duplicate gear (44) is sleeved on the second gear shaft (462), a third duplicate gear (45) is sleeved on the third gear shaft (463), and an output end gear (42) is sleeved on the fourth gear shaft (464).

3. The reduction gearbox structure of the linear push rod stepping motor according to claim 1, characterized in that: the movable rack (5) is provided with a rack sensing part (53) which vertically extends downwards, the reduction gearbox main body (2) is provided with a PI groove type sensor (8) at the lower end side of the movable rack (5), and the rack sensing part (53) is aligned with an induction groove (81) of the PI groove type sensor (8) up and down.

4. The reduction gearbox structure of the linear push rod stepping motor according to claim 1, characterized in that: the cover plate (3) of the speed reduction box is in threaded connection with the main body (2) of the speed reduction box.

5. The reduction gearbox structure of the linear push rod stepping motor according to claim 4, wherein: the front surface of reduction box main part (2) is provided with two interval arrangement and respectively forward the protruding apron reference column (23) that extend, the apron locating hole (32) that run through completely around respectively are seted up corresponding each apron reference column (23) in reduction box apron (3), and each apron reference column (23) inlays respectively and inserts in corresponding apron locating hole (32).

6. The reduction gearbox structure of the linear push rod stepping motor according to claim 1, characterized in that: the mounting and fixing surface of the reduction gearbox main body (2) is provided with a fixing lock lug (24), and the fixing lock lug (24) is provided with a fixing lock hole (241).

7. The reduction gearbox structure of the linear push rod stepping motor according to claim 6, wherein: and the mounting and fixing surface of the reduction gearbox main body (2) is provided with a mounting and positioning column (25).

Technical Field

The invention relates to the technical field of linear push rods, in particular to a reduction gearbox structure of a linear push rod stepping motor.

Background

The linear push rod is also called a linear push rod, and is widely applied to equipment such as backrest lifting of airplanes, steamships and luxury automobile seats, massage chairs, massage beds, fire-fighting equipment, medical equipment and furniture; the linear push rod is used for playing a role in pushing, pulling and stretching.

Among them, there are various forms of linear putter products in the prior art; however, for the existing linear push rod product, the common problems of unreasonable design, non-compact structure and incapability of realizing stable loaded pushing exist.

Disclosure of Invention

The invention aims to provide a reduction gearbox structure of a linear push rod stepping motor aiming at the defects of the prior art, the reduction gearbox structure of the linear push rod stepping motor is novel in structural design and compact in structure, and can stably realize on-load pushing.

In order to achieve the above object, the present invention is achieved by the following technical solutions.

A linear push rod stepping motor reduction gearbox structure comprises a stepping motor and a reduction gearbox assembly, wherein the reduction gearbox assembly comprises a reduction gearbox main body, a main body accommodating cavity with a forward opening is formed in the reduction gearbox main body, a reduction gearbox cover plate is arranged at the front end opening of the main body accommodating cavity at the front end part of the reduction gearbox main body, the stepping motor is arranged on the reduction gearbox main body, and a power output shaft of the stepping motor extends into the main body accommodating cavity;

a reduction gear set and a movable rack positioned beside the reduction gear set are embedded in a main body accommodating cavity of the reduction box main body, the reduction gear set comprises an input end gear arranged on a power output shaft of the stepping motor and an output end gear horizontally and transversely arranged, the input end gear is in driving connection with the output end gear, and the output end gear is meshed with the movable rack;

the movable rack is provided with two rack guide holes which are arranged at intervals in the front-back direction and completely penetrate through the movable rack from top to bottom, the main body of the reduction gearbox is respectively provided with guide posts which are arranged vertically corresponding to the rack guide holes, and the guide posts are respectively embedded in the corresponding rack guide holes of the movable rack; the movable rack is also provided with a push rod mounting hole which is completely penetrated in the front and back direction, a sliding push rod which is in a straight rod shape and extends along the front and back direction is embedded in the push rod mounting hole, the front end part of the sliding push rod extends to the front end side of the movable rack, and the rear end part of the sliding push rod extends to the rear end side of the movable rack;

the main gearbox body is provided with a main body slotted hole which is completely penetrated in the front and back and vertically extends corresponding to the sliding push rod, and the rear end part of the sliding push rod penetrates through the main body slotted hole and extends to the rear end side of the main gearbox body; the cover plate of the speed reducer is provided with a cover plate slotted hole which is completely penetrated in the front and at the back and vertically extends corresponding to the sliding push rod, and the front end part of the sliding push rod penetrates through the cover plate slotted hole and extends to the front end side of the cover plate of the speed reducer.

The reduction gear set further comprises a first duplicate gear, a second duplicate gear and a third duplicate gear, wherein the input end gear is meshed with a large gear of the first duplicate gear, a small gear of the first duplicate gear is meshed with a large gear of the second duplicate gear, a small gear of the second duplicate gear is meshed with a large gear of the third duplicate gear, and a small gear of the third duplicate gear is meshed with the output end gear;

a first gear shaft, a second gear shaft, a third gear shaft and a fourth gear shaft are clamped between the reduction box cover plate and the reduction box main body, the first duplicate gear is sleeved on the first gear shaft, the second duplicate gear is sleeved on the second gear shaft, the third duplicate gear is sleeved on the third gear shaft, and the output end gear is sleeved on the fourth gear shaft.

The movable rack is provided with a rack sensing part which vertically extends downwards, the reduction gearbox main body is provided with a PI groove type sensor at the lower end side of the movable rack, and the rack sensing part is aligned with the sensing groove of the PI groove type sensor from top to bottom.

The reduction box cover plate is in threaded connection with the reduction box main body.

The front surface of the speed reduction box main body is provided with two cover plate positioning columns which are arranged at intervals and respectively protrude forwards and extend forwards, the cover plate of the speed reduction box is provided with cover plate positioning holes which are completely penetrated in the front and back direction corresponding to the cover plate positioning columns respectively, and the cover plate positioning columns are inserted into the corresponding cover plate positioning holes respectively.

The mounting fixing surface of the speed reducer main body is provided with a fixing lock lug, and the fixing lock lug is provided with a fixing lock hole.

The mounting and fixing surface of the speed reducer main body is provided with a mounting and positioning column.

The invention has the beneficial effects that: the invention relates to a reduction gearbox structure of a linear push rod stepping motor, which comprises a stepping motor and a reduction gearbox assembly, wherein the reduction gearbox assembly comprises a reduction gearbox main body, a main body accommodating cavity with a forward opening is formed in the reduction gearbox main body, a reduction gearbox cover plate is arranged at the front end part of the reduction gearbox main body at the front end opening of the main body accommodating cavity, the stepping motor is arranged on the reduction gearbox main body, and a power output shaft of the stepping motor extends into the main body accommodating cavity; a reduction gear set and a movable rack positioned beside the reduction gear set are embedded in a main body accommodating cavity of the reduction box main body, the reduction gear set comprises an input end gear arranged on a power output shaft of the stepping motor and an output end gear horizontally and transversely arranged, the input end gear is in driving connection with the output end gear, and the output end gear is meshed with the movable rack; the movable rack is provided with two rack guide holes which are arranged at intervals in the front-back direction and completely penetrate through the movable rack from top to bottom, the main body of the reduction gearbox is respectively provided with guide posts which are arranged vertically corresponding to the rack guide holes, and the guide posts are respectively embedded in the corresponding rack guide holes of the movable rack; the movable rack is also provided with a push rod mounting hole which is completely penetrated in the front and back direction, a sliding push rod which is in a straight rod shape and extends along the front and back direction is embedded in the push rod mounting hole, the front end part of the sliding push rod extends to the front end side of the movable rack, and the rear end part of the sliding push rod extends to the rear end side of the movable rack; the main gearbox body is provided with a main body slotted hole which is completely penetrated in the front and back and vertically extends corresponding to the sliding push rod, and the rear end part of the sliding push rod penetrates through the main body slotted hole and extends to the rear end side of the main gearbox body; the cover plate of the speed reducer is provided with a cover plate slotted hole which is completely penetrated in the front and at the back and vertically extends corresponding to the sliding push rod, and the front end part of the sliding push rod penetrates through the cover plate slotted hole and extends to the front end side of the cover plate of the speed reducer. Through the structural design, the belt-loaded push mechanism has the advantages of novel design and compact structure, and can stably realize belt-loaded pushing.

Drawings

The invention will be further described with reference to the drawings to which, however, the embodiments shown in the drawings do not constitute any limitation.

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of another embodiment of the present invention.

Fig. 3 is an exploded view of the present invention.

Fig. 4 is a schematic cross-sectional view of the present invention.

FIG. 5 is a schematic cross-sectional view of another embodiment of the present invention.

Fig. 1 to 5 include:

1-stepping motor 2-reduction gearbox body

21 main body containing cavity 22 main body slotted hole

23-cover plate positioning column 24-fixed lock lug

241-fixed lock hole 25-mounting positioning column

3-reduction box cover plate 31-cover plate slotted hole

32-cover plate positioning hole 4-speed reducing gear set

41-input end gear 42-output end gear

43-first duplicate gear 44-second duplicate gear

45-third duplicate gear 461-first gear shaft

462-second gear shaft 463-third gear shaft

464-fourth gear shaft 5-movable rack

51-rack guide hole 52-push rod mounting hole

53-rack induction part 6-guide column

7-sliding push rod 8-PI groove type sensor

81-induction tank.

Detailed Description

The present invention will be described below with reference to specific embodiments.

As shown in fig. 1 to 5, a linear push rod stepping motor reduction gearbox structure comprises a stepping motor 1 and a reduction gearbox assembly, wherein the reduction gearbox assembly comprises a reduction gearbox main body 2, a forward opening main body accommodating cavity 21 is formed in the reduction gearbox main body 2, a reduction gearbox cover plate 3 is arranged at the front end opening of the main body accommodating cavity 21 at the front end part of the reduction gearbox main body 2, and the stepping motor 1 is arranged in the reduction gearbox main body 2 and a power output shaft of the stepping motor 1 extends into the main body accommodating cavity 21.

Wherein, the embedded reduction gear set 4, the movable rack 5 that is located reduction gear set 4 side that is equipped with in main part holding chamber 21 of reducing gear box main part 2, reduction gear set 4 is including installing in step motor 1's power output shaft's input gear 41, the output gear 42 that is horizontal transverse arrangement, and input gear 41 and output gear 42 drive are connected, and output gear 42 meshes with movable rack 5 mutually.

Further, the movable rack 5 is provided with two rack guide holes 51 which are arranged at intervals in the front-back direction and completely penetrate through the movable rack from top to bottom, the reduction gearbox main body 2 is respectively provided with guide posts 6 which are vertically arranged corresponding to the rack guide holes 51, and the guide posts 6 are respectively embedded in the rack guide holes 51 corresponding to the movable rack 5; the movable rack 5 is further provided with a push rod mounting hole 52 which is completely penetrated in the front and back direction, a sliding push rod 7 which is in a straight rod shape and extends along the front and back direction is embedded in the push rod mounting hole 52, the front end part of the sliding push rod 7 extends to the front end side of the movable rack 5, and the rear end part of the sliding push rod 7 extends to the rear end side of the movable rack 5.

Furthermore, a main body slotted hole 22 which completely penetrates in the front and back and extends vertically is formed in the speed reducer main body 2 corresponding to the sliding push rod 7, and the rear end part of the sliding push rod 7 penetrates through the main body slotted hole 22 and extends to the rear end side of the speed reducer main body 2; the cover plate 3 of the reduction box is provided with a cover plate slotted hole 31 which is completely penetrated in the front and back and vertically extends corresponding to the sliding push rod 7, and the front end part of the sliding push rod 7 penetrates through the cover plate slotted hole 31 and extends to the front end side of the cover plate 3 of the reduction box.

It should be explained that the reduction gear set 4 further includes a first duplicate gear 43, a second duplicate gear 44, and a third duplicate gear 45, the input end gear 41 is engaged with the large gear of the first duplicate gear 43, the small gear of the first duplicate gear 43 is engaged with the large gear of the second duplicate gear 44, the small gear of the second duplicate gear 44 is engaged with the large gear of the third duplicate gear 45, and the small gear of the third duplicate gear 45 is engaged with the output end gear 42; a first gear shaft 461, a second gear shaft 462, a third gear shaft 463 and a fourth gear shaft 464 are clamped between the reduction gearbox cover plate 3 and the reduction gearbox main body 2, the first duplicate gear 43 is sleeved on the first gear shaft 461, the second duplicate gear 44 is sleeved on the second gear shaft 462, the third duplicate gear 45 is sleeved on the third gear shaft 463, and the output gear 42 is sleeved on the fourth gear shaft 464.

In the working process of the invention, the stepping motor 1 drives the input end gear 41 to rotate through the power output shaft thereof, the input end gear 41 is meshed with the large gear of the first duplicate gear 43 and realizes first-stage speed reduction, the small gear of the first duplicate gear 43 is meshed with the large gear of the second duplicate gear 44 and realizes second-stage speed reduction, the small gear of the second duplicate gear 44 is meshed with the large gear of the third duplicate gear 45 and realizes third-stage speed reduction, the small gear of the third duplicate gear 45 is meshed with the output end gear 42 and realizes fourth-stage speed reduction, the output end gear 42 which rotates after speed reduction drives the movable rack 5 to move up and down, the movable rack 5 which moves up and down drives the sliding push rod 7 to synchronously move up and down, the front end part of the sliding push rod, the rear end parts are respectively used as driving ends, and the movable rack 5 which moves up and down drives the corresponding action piece to move up and down through the driving ends.

It should be explained that the present invention realizes the up-and-down movement guidance of the movable rack 5 by the guide post 6 cooperating with the rack guide hole 51 of the movable rack 5 to ensure the stable and reliable up-and-down movement of the movable rack 5.

It should be emphasized that the stepping motor 1 drives the movable rack 5 to move up and down after multi-stage speed reduction through the speed reduction gear set 4, and the structural design can effectively realize stable belt load pushing.

By combining the above conditions, the invention has the advantages of novel design and compact structure, and can stably realize the loaded pushing.

As shown in fig. 1, 3, and 5, in a preferred embodiment, the movable rack 5 is provided with a rack sensing portion 53 extending vertically downward, the reduction gear box main body 2 is provided with a PI groove sensor 8 on a lower end side of the movable rack 5, and the rack sensing portion 53 is vertically aligned with a sensing groove 81 of the PI groove sensor 8.

In the working process of the invention, when the movable rack 5 moves downwards and the PI groove type sensor 8 senses that the rack sensing part 53 of the movable rack 5 is inserted into the sensing groove 81, the stepping motor 1 stops moving and rotating, namely the movable rack 5 moves downwards to the initial position; by arranging the PI groove type sensor 8 and the rack sensing part 53, the invention can effectively control the displacement stepping distance of the sliding push rod 7 and can effectively avoid the problems of collision and noise caused by excessive downward movement of the movable rack 5.

As a preferred embodiment, as shown in fig. 1 to 4, the reduction box cover plate 3 is screwed to the reduction box main body 2. In the process of screwing and fastening the reduction box cover plate 3 on the front end surface of the reduction box main body 2, in order to realize the quick positioning of the reduction box cover plate 3, the invention can adopt the following positioning structure design: the front surface of the reduction gearbox main body 2 is provided with two cover plate positioning columns 23 which are arranged at intervals and respectively protrude forwards and extend forwards, the reduction gearbox cover plate 3 is provided with cover plate positioning holes 32 which are completely penetrated forwards and backwards corresponding to the cover plate positioning columns 23, and the cover plate positioning columns 23 are respectively inserted into the corresponding cover plate positioning holes 32.

As shown in fig. 1, 2, 3, and 5, a fixing lug 24 is provided on the mounting and fixing surface of the reduction gear box main body 2, and a fixing lock hole 241 is opened in the fixing lug 24. In the process of installation and fixation of the present invention, the locking screws are installed in the fixing locking holes 241 of the fixing locking lugs 24, that is, the reduction gearbox main body 2 of the present invention is installed and fixed by the fixing locking lugs 24 matching with the locking screws. In addition, in order to realize the quick positioning when the reduction gearbox main body 2 is installed and fixed, the invention can adopt the following structural design: the mounting fixing surface of the reduction gear box main body 2 is provided with a mounting positioning column 25.

The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.