CN218409456U

CN218409456U - Push-pull rotating device and rotating screen

Info

Publication number: CN218409456U
Application number: CN202222635059.0U
Authority: CN
Inventors: 唐琦成; 杨小云; 雷晓东
Original assignee: Shenzhen Zhaowei Machinery and Electronics Co Ltd
Current assignee: Shenzhen Zhaowei Machinery and Electronics Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-31
Anticipated expiration: 2032-09-29

Abstract

The utility model relates to a rotatory screen technical field, the utility model provides a push-and-pull rotary device and rotatory screen, the push-and-pull rotary device of this application is used for driving predetermined structure beat, push-and-pull rotary device is through first arc rack and first actuating mechanism's transmission cooperation, can realize that predetermined structure rotates around the second connecting axle, when predetermined structure rotates around the second connecting axle, one side that predetermined structure closes on the second connecting axle keeps motionless, one side of keeping away from the second connecting axle drives its rotation by first arc rack of first actuating mechanism drive, embedded or non-embedded multiple installation occasion can be applied to the rotatory design of this kind of push-and-pull, be favorable to satisfying diversified installation demand.

Description

Push-pull rotating device and rotating screen

Technical Field

The application belongs to the technical field of rotary screens, and particularly relates to a push-pull rotating device and a rotary screen.

Background

In the rotatory screen field, the current screen that can rotate from left to right sets up a rotation center in the centre of screen mostly, and the screen is rotatory or is rotatory right around this rotation center, but this kind of current rotatory mode for the suitable scene of screen has the limitation, if in some occasions that need carry out embedded installation with the screen, this kind of current rotatory mode, when the screen is rotatory to one side, the wall body the inside will be rotated in step to the other one end of screen, and then influence the normal use of screen.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a push-pull rotary device and a rotary screen to solve the technical problem that the rotary screen using scene existing in the prior art is limited and cannot meet diversified installation requirements.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: there is provided a push-pull rotary device for driving a predetermined structural member to yaw, the push-pull rotary device comprising:

the transmission module, the transmission module includes first arc rack and a drive mechanism, first arc rack with a drive mechanism transmission is connected, just first arc rack with rotate through first connecting axle between the first end of predetermined structure and be connected, the second end of predetermined structure rotates through second connecting axle and predetermined position and is connected, a drive mechanism is used for providing drive power so that predetermined structure centers on the second connecting axle rotates.

Optionally, the transmission module further includes a second arc-shaped rack and a second driving mechanism, the second arc-shaped rack is in transmission connection with the second driving mechanism, the second arc-shaped rack is in rotational connection with the second end of the predetermined structural member through the second connecting shaft, the first arc-shaped rack is arranged opposite to the second arc-shaped rack, and the second driving mechanism is configured to provide a driving force to enable the predetermined structural member to rotate around the first connecting shaft.

Optionally, the first driving mechanism and the second driving mechanism both include a driving part and a rotating assembly in transmission connection with the driving part, the rotating assembly includes a rotating shaft, an input gear and an output gear, which are sequentially sleeved on the rotating shaft, the input gear is in transmission connection with the driving part, the output gear is engaged with the first arc-shaped rack or the second arc-shaped rack, and the input gear is configured to drive the output gear to rotate.

Optionally, the free ends of the first arc-shaped rack and the second arc-shaped rack are both provided with a limiting portion, and the limiting portions are used for limiting the transmission stroke of the output gear on the first arc-shaped rack or the second arc-shaped rack.

Optionally, the first driving mechanism and the second driving mechanism both include a helical gear worm and a gear transmission assembly, an input end of the helical gear worm is connected with an output end of the driving piece, an output end of the helical gear worm is connected with an input end of the gear transmission assembly, and an output end of the gear transmission assembly is connected with the input gear.

Optionally, a first clamping portion is disposed on an end surface of the input gear adjacent to the output gear, a second clamping portion matched with the first clamping portion is disposed on an end surface of the output gear adjacent to the input gear, the first clamping portion is configured to be in clamping fit with the second clamping portion, and when the push-pull rotating device is powered off, the first clamping portion is configured to be capable of being disengaged from the second clamping portion under the driving of a preset external force.

Optionally, the rotating assembly further includes an elastic member sleeved on the rotating shaft, and the elastic member is configured to press the input gear or the output gear with a preset pre-tightening force.

Optionally, the rotating assembly further comprises a first shaft sleeve, a second shaft sleeve, an adjusting gasket, a first rolling bearing and a second rolling bearing, the first shaft sleeve, the second shaft sleeve, the adjusting gasket, the first rolling bearing and the second rolling bearing are sleeved on the rotating shaft, the adjusting gasket is abutted to the elastic piece, the input gear, the output gear, the elastic piece and the adjusting gasket are located between the first shaft sleeve and the second shaft sleeve, and the first rolling bearing and the second rolling bearing are respectively sleeved on two opposite ends of the rotating shaft.

Optionally, the push-pull rotating device further includes a housing, the housing is covered outside the transmission module, and a channel for the first arc-shaped rack and the second arc-shaped rack to move is formed in the housing.

The application also provides a rotary screen, which comprises a screen body and the push-pull rotating device, wherein the screen body is the preset structural part.

The application provides a push-and-pull rotary device's beneficial effect lies in: compared with the prior art, the push-and-pull rotary device of this application is used for driving predetermined structure beat, push-and-pull rotary device is through first arc rack and actuating mechanism's transmission cooperation, can realize that predetermined structure rotates around the second connecting axle, when predetermined structure rotates around the second connecting axle, one side that predetermined structure closes on the second connecting axle keeps motionless, one side of keeping away from the second connecting axle then drives its rotation by first arc rack of actuating mechanism drive, the rotatory design of this kind of push-and-pull can be applied to embedded or non-embedded multiple installation occasion, be favorable to satisfying diversified installation demand.

The beneficial effect of the rotatory screen that this application provided is the same with the beneficial effect of the push-and-pull rotary device that this application provided, and it is no longer repeated here.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the embodiments or the prior art description will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without inventive labor.

Fig. 1 is an overall top view structural schematic diagram of a rotary screen provided in an embodiment of the present application;

fig. 2 is a schematic overall split structure diagram of a rotary screen according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a rotating assembly according to an embodiment of the present disclosure;

FIG. 4 is an exploded view of a rotating assembly according to an embodiment of the present disclosure;

FIG. 5 is a front view of a rotating assembly provided by an embodiment of the present application;

FIG. 6 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 5;

fig. 7 (a), (b), and (c) are schematic structural views of the rotary screen rotating to the right, the rotary screen in a normal state, and the rotary screen rotating to the left, respectively.

Wherein, in the figures, the respective reference numerals:

10. a predetermined structural member; 20. a first connecting shaft; 30. a second connecting shaft; 40. a transmission module; 50. an arc-shaped rack; 501. a first arc-shaped rack; 502. a second arc-shaped rack; 503. a limiting part; 60. a drive mechanism; 601. a first drive mechanism; 602. a second drive mechanism; 61. a drive member; 62. a rotating assembly; 621. a rotating shaft; 6211. a first bushing; 6212. a second shaft sleeve; 6213. a first rolling bearing; 6214. a second rolling bearing; 6215. a first shaft end fixing member; 6216. a second shaft end retainer; 622. an input gear; 6221. a first clamping part; 623. an output gear; 6231. a second clamping part; 624. an elastic member; 625. adjusting the gasket; 63. a helical-toothed worm; 64. a gear drive assembly; 70. a housing.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A push-pull rotation device provided in an embodiment of the present application will now be described. The screen that can rotate now sets up a rotation center in the middle of the screen mostly, and the screen is rotatory or is rotatory right around this rotation center left, and the occasion of embedded installation is carried out the screen when needs, if when the embedding was installed in the wall body, this kind of rotatory mode now will lead to the screen to when rotatory on one side, and the other one end of screen can be turned to the wall body the inside in step, seriously influences the user and watches the experience of screen. Based on this, this application design push-and-pull rotary device through arc rack and actuating mechanism's cooperation, rotates around one of them rotation center, and the other side of screen body will be stable motionless, consequently, is applicable to diversified installation occasion more.

The push-pull rotation device of the embodiment of the present application is described in detail below with reference to the accompanying drawings:

referring to fig. 1, fig. 2 and (a), (b) and (c) of fig. 7, the push-pull rotation device of the embodiment of the present application is used for driving the predetermined structural member 10 to swing, wherein the predetermined structural member 10 may be various forms of display screens, displays, etc., and the size, model, function, etc. of the predetermined structural member 10 may be selected according to actual needs, and the structure, shape, etc. of the predetermined structural member 10 are not particularly limited in the embodiment of the present application.

The push-pull rotating device comprises a transmission module 40, wherein the transmission module 40 comprises a first arc-shaped rack 501 and a first driving mechanism 601, the first arc-shaped rack 501 is in transmission connection with the first driving mechanism 601, the first arc-shaped rack 501 is in rotation connection with a first end of a preset structural member 10 through a first connecting shaft 20, a second end of the preset structural member 10 is in rotation connection with a preset position through a second connecting shaft 30, and the first driving mechanism 601 is used for providing driving force to enable the preset structural member 10 to rotate around the second connecting shaft 30.

The transmission module 40 is mainly used for driving the predetermined structural member 10 to rotate, and the first arc-shaped rack 501 can meet the requirement of a corresponding rotation angle at an ultra-low rotation speed within a corresponding time, which is beneficial to reducing the overall noise of the transmission module 40.

Wherein, referring to fig. 2, the first connecting shaft 20 and the second connecting shaft 30 may be respectively disposed at two opposite sides of the predetermined structural member 10; of course, the first connecting shaft 20 may be disposed at an end portion of the first arc-shaped rack 501.

The first driving mechanism 601 may be any of various driving mechanisms, such as a rotating motor, a rotating cylinder, and the like.

In this embodiment, the rotation of the predetermined structural member 10 in a certain direction can be realized according to the actual application, for example, the first arc-shaped rack 501 is rotatably connected to the first end of the predetermined structural member 10, the first end of the predetermined structural member 10 can be the left end or the right end of the predetermined structural member 10 in normal use, if the first end is the left end, the predetermined structural member 10 is driven to rotate to the right, and conversely, if the first end is the right end, the predetermined structural member 10 is driven to rotate to the left. The second end of the predetermined structural member 10 is the other end opposite to the first end, and when the first end of the predetermined structural member 10 is driven to rotate by the first arc-shaped rack 501 and the first driving mechanism 601, the relative positional relationship between the second end of the predetermined structural member 10 and the predetermined position does not change, but the entire predetermined structural member 10 rotates about the second connecting shaft 30. The predetermined position may be an installation position corresponding to the second end of the predetermined structural member 10.

Compared with the prior art, through the transmission cooperation of first arc-shaped rack 501 and first actuating mechanism 601, it can realize that predetermined structure 10 rotates around second connecting axle 30, when predetermined structure 10 rotates around second connecting axle 30, one side that predetermined structure 10 closes on second connecting axle 30 keeps motionless, one side of keeping away from second connecting axle 30 then drives its rotation by first arc-shaped rack 501 of actuating mechanism 601 drive, the rotatory design of this kind of push-and-pull can be applied to embedded or non-embedded multiple installation occasion, be favorable to satisfying diversified installation demand.

In another embodiment of the present application, in combination with fig. 2, the transmission module 40 further includes a second arc-shaped rack 502 and a second driving mechanism 602, the second arc-shaped rack 502 is in transmission connection with the second driving mechanism 602, and the second arc-shaped rack 502 is in rotational connection with the second end of the predetermined structural member 10 through the second connection shaft 30, the first arc-shaped rack 501 is disposed opposite to the second arc-shaped rack 502, and the second driving mechanism 602 is configured to provide a driving force to rotate the predetermined structural member 10 around the first connection shaft 20.

Specifically, in this embodiment, with reference to fig. 1 and fig. 2, the transmission module 40 includes an arc-shaped rack 50 and a driving mechanism 60, and the arc-shaped rack 50 corresponds to and is in transmission connection with the driving mechanism 60. The first arc-shaped rack 501 is in transmission connection with the first driving mechanism 601, the first arc-shaped rack 501 is rotatably connected with the first end of the preset structural member 10 through the first connecting shaft 20, the second arc-shaped rack 502 is in transmission connection with the second driving mechanism 602, the second arc-shaped rack 502 is rotatably connected with the second end of the preset structural member 10 through the second connecting shaft 30, and the first arc-shaped rack 501 and the second arc-shaped rack 502 are arranged oppositely.

The first driving mechanism 601 and the second driving mechanism 602 are used to provide driving force when the predetermined structural member 10 rotates about the first connecting shaft 20 and the second connecting shaft 30, respectively. With reference to fig. 7 (a), (b), and (c), the first arc-shaped rack 501 and the second arc-shaped rack 502 are disposed opposite to each other to ensure that the predetermined structural member 10 can rotate (rotate to the right) around the second connecting shaft 30 as a rotation center when the first driving mechanism 601 operates; when the second driving mechanism 602 is operated, the predetermined structure 10 can be rotated (rotated leftward) with the first connecting shaft 20 as a rotation center. The first connecting shaft 20 and the second connecting shaft 30 serve as two rotation centers of the predetermined structural member 10, and when the predetermined structural member 10 is rotated to one side, the position of the predetermined structural member 10 relative to the other side is maintained.

Through the transmission fit of the arc-shaped rack 50 and the driving mechanism 60, the preset structural member 10 can rotate around the first connecting shaft 20 or around the second connecting shaft 30, when the preset structural member 10 rotates to one side, the position of the opposite side of the preset structural member 10 is kept still, and the push-pull rotating design can be applied to various embedded or non-embedded installation occasions, and is favorable for meeting diversified installation requirements. Meanwhile, the two rotation centers can meet the requirement that the preset structural part 10 rotates towards two directions, the applicability of the preset structural part is improved, and the preset structural part 10 can be more stable in the rotating process.

Referring to fig. 2 to 6, each of the first driving mechanism 601 and the second driving mechanism 602 includes a driving member 61 and a rotating assembly 62 in transmission connection with the driving member 61, and referring to fig. 6, the rotating assembly 62 includes a rotating shaft 621, an input gear 622 and an output gear 623 sequentially sleeved on the rotating shaft 621, the input gear 622 is in transmission connection with the driving member 61, the output gear 623 is engaged with the first arc-shaped rack 501 or the second arc-shaped rack 502, and the input gear 622 is configured to drive the output gear 623 to rotate.

Specifically, in the present embodiment, the driving member 61 is used as an output source of power, the driving member 61 can select a driving motor, or drive an air cylinder, etc., the driving motor can select a brushless motor, and the brushless motor has a hall, so that the driving motor is convenient to control, and meanwhile, the noise is low, the service life is long, and is more than 5 times that of a common brush motor. The driving member 61 provides a driving force to drive the input gear 622 in transmission connection therewith to rotate, the input gear 622 rotates to drive the output gear 623 to rotate, and further the first arc-shaped rack 501 or the second arc-shaped rack 502 is driven to move, and the predetermined structural member 10 can be driven to rotate by the first arc-shaped rack 501 or the second arc-shaped rack 502. In this embodiment, during the process that the input gear 622 drives the output gear 623 to rotate, the rotating shaft 621 is fixed and does not rotate, that is, the input gear 622 and the output gear 623 are respectively in clearance fit with the rotating shaft 621, and the input gear 622 and the output gear 623 can rotate relative to the rotating shaft 621.

Alternatively, referring to fig. 2, the rotating assembly 62 is in transmission connection with the driving member 61 through a transmission assembly, and the transmission assembly can select various transmission modes, such as a gear transmission mode, a belt transmission mode, or the like.

In another embodiment of the present application, please refer to fig. 1 and fig. 2, the free ends of the first arc-shaped rack 501 and the second arc-shaped rack 502 are respectively provided with a limiting portion 503, and the limiting portions 503 are used for limiting the transmission stroke of the output gear 623 on the first arc-shaped rack 501 or the second arc-shaped rack 502.

Specifically, in this embodiment, the free end of the first arc-shaped rack 501 is provided with a limiting portion 503, the free end of the second arc-shaped rack 502 is also provided with a limiting portion 503, and the limiting portion 503 can limit the moving stroke of the rack (i.e., the transmission stroke of the output gear 623 on the rack), so as to prevent the meshing relationship between the output gear 623 and the arc-shaped rack 50 from being disengaged during transmission, which may cause transmission failure.

In another embodiment of the present application, referring to fig. 2, the driving mechanism 60 further includes a helical worm 63 and a gear transmission assembly 64, an input end of the helical worm 63 is connected to an output end of the driving member 61, an output end of the helical worm 63 is connected to an input end of the gear transmission assembly 64, and an output end of the gear transmission assembly 64 is connected to the input gear 622.

Specifically, in the embodiment, the helical worm 63 is used as a primary transmission connected with the output end of the driving member 61, and the helical worm 63 generates a high reduction ratio, which is beneficial to the rapid speed reduction of the driving member 61 and the noise reduction of the whole driving mechanism 60; on the other hand, the helical worm 63 may provide a greater self-locking force, which may be beneficial for improving the stability of the rotation process of the predetermined structural member 10.

Alternatively, the gear assembly 64 may select the number of stages of the transmission and the form of the transmission according to actual requirements, such as selecting a planetary gear transmission, a cylindrical gear transmission, and the like. The power of the driving member 61 is transmitted to the input gear 622 through the cooperation of the gear transmission assembly 64 and the helical worm 63, and then transmitted to the output gear 623 through the input gear 622, and finally the arc-shaped rack 50 is driven to move by the output gear 623.

In another embodiment of the present application, referring to FIG. 2, the gear assembly 64 includes a plurality of gears that are driven in parallel.

Specifically, in the present embodiment, the gear assembly 64 is implemented by a parallel shaft transmission, which includes a plurality of gears driven in parallel. As in one embodiment, with reference to fig. 2, the entire drive mechanism 60 includes six stages of transmission, wherein one stage is helical worm transmission, two stages are straight-tooth gear transmission, three stages are straight-tooth gear transmission, four stages are straight-tooth gear transmission, five stages are straight-tooth gear transmission, and six stages are arc rack transmission, and the six stages of transmission can adopt the principle of "front small and back large" to allocate the transmission ratio, i.e. the allocation of the transmission ratio is gradually transited from the high speed stage to the low speed stage. By adopting multi-stage gear transmission, the reduction of the transmission overall dimension and the reduction of the mass can be facilitated, and the overall structure of the driving mechanism 60 is compact.

Of course, in other embodiments, other numbers of transmission gears may be provided according to the actual transmission requirement, and are not limited specifically herein.

In another embodiment of the present application, referring to fig. 4 and 6, a first engaging portion 6221 is disposed on an end surface of the input gear 622 adjacent to the output gear 623, a second engaging portion 6231 matched with the first engaging portion 6221 is disposed on an end surface of the output gear 623 adjacent to the input gear 622, the first engaging portion 6221 is configured to engage with the second engaging portion 6231, and when the push-pull rotation device is powered off, the first engaging portion 6221 is configured to be able to disengage from the second engaging portion 6231 under the driving of a predetermined external force.

Specifically, in the present embodiment, the input gear 622 and the output gear 623 are connected in a snap fit manner by means of the first snap portion 6221 and the second snap portion 6231. Optionally, referring to fig. 4, each of the first fastening portion 6221 and the second fastening portion 6231 may be a part of an annular rib, the first fastening portion 6221 and the second fastening portion 6231 may cooperate to form a complete annular rib, or both the first fastening portion 6221 and the second fastening portion 6231 may be intermittently arranged annular ribs, and after being fastened, the first fastening portion 6221 and the second fastening portion 6231 are embedded into the grooves of the other fastening portion.

In another embodiment of the present application, referring to fig. 3 to 6, the rotating assembly 62 further includes an elastic member 624 sleeved on the rotating shaft 621, wherein the elastic member 624 is configured to press the input gear 622 or the output gear 623 with a predetermined amount of pre-tightening force.

Specifically, in this embodiment, with reference to fig. 5, the elastic element 624 may be disposed at an end of the rotating shaft 621 close to the input gear 622 or at an end close to the output gear 623. The elastic member 624 mainly provides a pre-tightening force with a preset magnitude, so as to provide a pressure to the whole axial direction, so that each part on the rotating shaft 621 is pressed, and gaps between each part can be eliminated, so that play cannot occur between each other, i.e. the elastic member 624 is arranged to achieve the effect of eliminating the gaps in the axial direction. The elastic member 624 may be a common spring or a wave-shaped elastic sheet, etc. as required. The number and the elastic coefficient of the elastic members 624 can be selected according to the required clutch force, for example, one elastic member 624 is provided, and two or more elastic members 624 can be provided.

Specifically, under the normal power-on condition of the driving element 61, that is, when the push-pull rotating device is in normal transmission, the elastic element 624 is in a certain compression state, and the elastic element 624 can provide axial pressure so that the first clamping portion 6221 on the input gear 622 and the second clamping portion 6231 on the output gear 623 can be in relatively stable clamping fit; when the driving member 61 is powered off, the driving mechanism 60 is subjected to a large external force (e.g. the predetermined structural member 10 is pushed by a hand to swing) and the external force exceeds the back-driving resistance of the mechanism itself (i.e. the external force reaches a predetermined magnitude), the first clamping portion 6221 and the second clamping portion 6231 are disengaged from each other, the input gear 622 and the output gear 623 are axially separated, and the compressed elastic member 624 is further compressed. At this time, the arc-shaped rack 50 can be manually pushed to displace, so that the predetermined structural component 10 can rotate or return to the original position, and meanwhile, the external force can be ensured not to damage the driving mechanism 60.

In another embodiment of the present application, referring to fig. 3 to 6, the rotating assembly 62 further includes a first sleeve 6211 and a second sleeve 6212 sleeved on the rotating shaft 621, and the input gear 622, the output gear 623 and the elastic member 624 are all located between the first sleeve 6211 and the second sleeve 6212.

Specifically, in this embodiment, the first sleeve 6211 and the second sleeve 6212 sleeved on the rotating shaft 621 are elastic sleeves, such as plastic sleeves, and the first sleeve 6211 and the second sleeve 6212 may be connected to the rotating shaft 621 by interference fit, or may be connected to the rotating shaft 621 by other methods. The first shaft sleeve 6211 and the second shaft sleeve 6212 can limit the position of the input gear 622, the output gear 623 and the elastic element 624 on the rotating shaft 621, and simultaneously, the clearance among the axial parts can be eliminated, and the noise generated when the rotating assembly 62 operates can be reduced.

In another embodiment of the present application, referring to fig. 3 to fig. 6, the rotating assembly 62 further includes an adjusting pad 625 sleeved on the rotating shaft 621, and the adjusting pad 625 abuts against the elastic element 624.

Specifically, in the present embodiment, the adjusting pad 625 is sleeved on the rotating shaft 621, and the adjusting pad 625 is mainly used for adjusting the clutch acting force of the rotating assembly 62 when the driving element 61 is not powered. The adjustment pad 625 may be located between the input gear 622 and the elastic member 624, or the adjustment pad 625 is located between the output gear 623 and the elastic member 624, or the elastic member 624 is located between the input gear 622 and the adjustment pad 625, or the elastic member 624 is located between the output gear 623 and the adjustment pad 625. The connection position of the adjusting pad 625 and the elastic member 624 on the rotating shaft 621 can be set according to actual needs, and it is only required to ensure that the adjusting pad 625 abuts against the elastic member 624.

Specifically, the number of adjusting pads 625 can be selected according to the clutch acting force required by the rotating assembly 62, and the larger the number of adjusting pads 625 is, the smaller the clutch acting force is when the number of adjusting pads 625 is reduced.

Optionally, the adjusting washer 625 is annular, and the annular adjusting washer 625 is matched with the elastic member 624 in size, that is, the entire elastic member 624 can be completely abutted against the adjusting washer 625, so that the stability of deformation of the elastic member 624 can be ensured, and the elastic member 624 is prevented from being inclined in the deformation process. The thickness of the adjusting pad 625 can be set according to the actual clutch acting force. By arranging the adjusting gasket 625, the force-bearing area of the elastic member 624 acting on the input gear 622 or the output gear 623 can be increased, so that the rotating assembly 62 can run stably, and meanwhile, the clutch acting force of the rotating assembly 62 can be adjusted by the adjusting gasket 625 to meet the rotating requirements of screens with different sizes.

In another embodiment of the present application, referring to fig. 3 to 6, the rotating assembly 62 further includes a first rolling bearing 6213, a second rolling bearing 6214, a first shaft end fixing member 6215 and a second shaft end fixing member 6216, the first rolling bearing 6213 and the second rolling bearing 6214 are respectively sleeved at two opposite ends of the rotating shaft 621, the first shaft end fixing member 6215 is respectively connected to the rotating shaft 621 and an inner ring of the first rolling bearing 6213, and the second shaft end fixing member 6216 is respectively connected to the rotating shaft 621 and an inner ring of the second rolling bearing 6214.

Specifically, in the present embodiment, the input gear 622, the output gear 623, the elastic element 624, and other parts are located between the first rolling shaft and the second rolling bearing 6214, the first rolling bearing 6213 and the second rolling bearing 6214 are provided, and the elastic element 624 is provided, so that the axial play generated by the parts in the axial direction of the rotating shaft 621 can be optimized to the play of the inner and outer rings of the first rolling bearing 6213 and the second rolling bearing 6214, thereby reducing noise and ensuring power transmission efficiency.

Specifically, referring to fig. 6, the inner ring of the first rolling bearing 6213 is fixed to the rotating shaft 621 by the first shaft-end fixing piece 6215, and the inner ring of the second rolling bearing 6214 is fixed to the rotating shaft 621 by the second shaft-end fixing piece 6216, so that the rolling bearing and the rotating shaft 621 are fixedly connected to each other. Specifically, the shaft end fixing member may be connected to the rotation shaft 621 by a set screw.

In another embodiment of the present application, referring to fig. 2, the push-pull rotation device further includes a housing 70, and the housing 70 is covered outside the transmission module 40.

Specifically, in this embodiment, the housing 70 encloses the transmission module 40, so as to reduce or avoid the interference of the external environment on the normal operation of the transmission module 40, and make the appearance of the whole push-pull rotation device beautiful and neat. Meanwhile, a channel for the movement of the first arc-shaped rack 501 and the second arc-shaped rack 502 is formed in the housing 70, and the channel mainly plays a role in guiding the movement of the racks.

Referring to fig. 1, fig. 2 and fig. 7 (a), (b) and (c), the present application further provides a rotary screen, which includes a screen body and the push-pull rotation device according to any of the above embodiments, wherein the screen body is the predetermined structural member 10 according to any of the above embodiments.

The push-and-pull rotary device more than the adoption can be applied to various embedded or non-embedded installation occasions through the rotatory screen of this application for the rotatory screen of this application can satisfy more diversified installation demands.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A push-pull rotation device for driving a predetermined structure to yaw, the push-pull rotation device comprising:

2. The push-pull rotation device as claimed in claim 1, wherein the transmission module further comprises a second arc-shaped rack and a second driving mechanism, the second arc-shaped rack is in transmission connection with the second driving mechanism, the second arc-shaped rack is in rotational connection with the second end of the predetermined structural member through the second connecting shaft, the first arc-shaped rack and the second arc-shaped rack are oppositely arranged, and the second driving mechanism is used for providing a driving force to rotate the predetermined structural member around the first connecting shaft.

3. The push-pull rotary device as claimed in claim 2, wherein the first driving mechanism and the second driving mechanism each comprise a driving member and a rotating assembly drivingly connected to the driving member, the rotating assembly comprising a rotating shaft, an input gear and an output gear sequentially sleeved on the rotating shaft, the input gear being drivingly connected to the driving member, the output gear being engaged with the first arcuate rack or the second arcuate rack, the input gear being configured to drive the output gear to rotate.

4. The push-pull rotation device as claimed in claim 3, wherein the free ends of the first and second arc-shaped racks are each provided with a limiting portion for limiting a transmission stroke of the output gear on the first or second arc-shaped rack.

5. The push-pull rotary device of claim 3, wherein the first drive mechanism and the second drive mechanism each comprise a helical worm gear and a gear assembly, an input of the helical worm gear being connected to an output of the drive member, an output of the helical worm gear being connected to an input of the gear assembly, and an output of the gear assembly being connected to the input gear.

6. The push-pull rotation device as claimed in claim 3, wherein a first engaging portion is provided on an end surface of the input gear adjacent to the output gear, a second engaging portion matching with the first engaging portion is provided on an end surface of the output gear adjacent to the input gear, the first engaging portion is configured to engage with the second engaging portion, and the first engaging portion is configured to be disengaged from the second engaging portion when the push-pull rotation device is powered off and driven by a predetermined external force.

7. The push-pull rotary device as claimed in claim 6, wherein the rotary assembly further comprises an elastic member sleeved on the rotary shaft, the elastic member being configured to press the input gear or the output gear with a predetermined pre-load force.

8. The push-pull rotary device as claimed in claim 7, wherein the rotary assembly further comprises a first shaft sleeve, a second shaft sleeve, an adjusting washer, a first rolling bearing and a second rolling bearing sleeved on the rotary shaft, the adjusting washer abuts against the elastic member, the input gear, the output gear, the elastic member and the adjusting washer are all located between the first shaft sleeve and the second shaft sleeve, and the first rolling bearing and the second rolling bearing are respectively sleeved on opposite ends of the rotary shaft.

9. The push-pull rotation device as claimed in any one of claims 2 to 7, further comprising a housing, wherein the housing covers the outside of the transmission module, and the housing defines a channel for the first and second arcuate racks to move.

10. A rotary screen comprising a screen body and a push-pull rotary device as claimed in any one of claims 1 to 9, wherein said screen body is said predetermined structural member.