Rotating shaft positioning structure and rotating screen

Abstract

The utility model belongs to the technical field of rotating shaft positioning, and discloses a rotating shaft positioning structure and a rotating screen. The rotating shaft positioning structure comprises a fixed seat, a driving assembly, a transmission assembly, a movable part and a fixed part, the driving assembly is installed in the fixed seat, the transmission assembly is installed in the fixed seat and provided with a power input end and a power output end, the power input end is matched with an output shaft of the driving assembly, and the movable part is movably installed on the fixed seat and provided with a power output end. And the fixed part is mounted on the fixed seat, and a positioning space for clamping the rotating shaft is defined by the fixed part and the movable part. According to the rotating shaft positioning structure, the rotating shaft can be stably positioned at a specified position, and the compatibility is good.

Description

Technical Field

[0001] The utility model relates to the technical field of rotation shaft positioning, in particular to a rotation shaft positioning structure and a rotating screen. Background Art

[0002] With the development of automobile technology, the field of smart cockpits has gradually received more and more attention from automobile manufacturers. In order to improve the user experience of rear passengers, existing cars will install entertainment screens in the rear position. Existing entertainment screens usually require a drive actuator and a damper. The drive actuator is responsible for providing power for the screen to rotate and open, and the damper is responsible for maintaining the entertainment flip screen in the viewing position. The two parts are usually integrated together. A position sensor is integrated at the other end of the entertainment flip screen's shaft to detect the rotation position of the screen. A drive actuator mechanism usually includes transmission structures such as a motor and a gearbox, while the damper provides a way to maintain the entertainment flip screen in the viewing position.

[0003] As in-car entertainment screens continue to grow in size, to ensure they remain stably positioned in the viewing position, dampers must increase in size and weight, while also increasing damping and holding torque. Existing dampers for rotating screens are not well-suited to a variety of screen sizes. Furthermore, due to the damper's unique operating principle, the damping rubber ring can easily lose its ability to effectively hold the rotating shaft in place after prolonged use, causing the shaft to slip and lose its ability to effectively and stably hold the shaft, leading to an unstable viewing position. Utility Model Content

[0004] The first object of the present utility model is to provide a rotation shaft positioning structure, which can stably position the rotation shaft at a specified position and has good compatibility.

[0005] A second object of the present invention is to provide a rotating screen that can be well maintained in a designated position, has good reliability, and has a low chance of the screen slipping.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] The utility model discloses a rotating shaft positioning structure, comprising: a fixed seat; a driving assembly, which is installed in the fixed seat; a transmission assembly, which is installed in the fixed seat, and the transmission assembly has a power input end and a power output end, and the power input end cooperates with the output shaft of the driving assembly; a movable part, which can be movably installed on the fixed seat and is in transmission cooperation with the power output end; and a fixed part, which is installed on the fixed seat and defines a positioning space for clamping the rotating shaft together with the movable part.

[0008] The beneficial effects of the rotating shaft positioning structure of the present invention: Compared with the prior art solution of using a damper to ensure that the screen can be stably maintained in a specified position, the rotating shaft positioning structure of the present invention forms a positioning space for clamping the rotating shaft by setting a fixed part and a movable part, and uses a driving assembly and a transmission assembly to drive the movable part toward the fixed part to achieve clamping of the rotating shaft. On the one hand, there is no technical problem that the damping rubber ring of the damper easily fails to limit the damping of the rotating shaft after a long period of action, causing the rotating shaft to slip. On the other hand, the clamping and positioning structure is not limited by the size of the screen carried on the rotating shaft, and there is no technical problem that the weight of the screen needs to gradually increase, and the compatibility is good.

[0009] In some embodiments, the movable part includes: a movable bracket, one end of which is rotatably mounted on the fixed seat, and the other end cooperates with the power output end; a clamping part, which is fixedly mounted on the movable bracket and defines the positioning space with the fixed member; wherein: the power output end drives the movable bracket to rotate relative to the fixed seat, so that the clamping part moves closer to or away from the fixed member, and adjusts the tightness of clamping the rotating shaft.

[0010] In some specific embodiments, the power output end includes a screw shaft, which is passed through the movable part; the movable bracket is provided with a through hole that cooperates with the screw shaft; the movable part also includes a clamping nut, which cooperates with the screw shaft. When the screw shaft rotates, the clamping nut moves along the axial direction of the screw shaft, thereby driving the movable bracket to move in a direction close to the fixed part.

[0011] In some more specific embodiments, the movable bracket is provided with a mounting groove connected to the through hole, and the clamping nut is installed in the mounting groove; the rotating shaft positioning structure also includes a limit member, which is installed on the fixing seat and arranged corresponding to the mounting groove, and the limit member is used to prevent the clamping nut from falling off the screw shaft.

[0012] In some embodiments, the power input end includes a worm, which is connected to the output shaft of the drive assembly; the transmission assembly also includes at least one transmission gear, which transmits the power of the worm to the screw shaft to drive the screw shaft to rotate.

[0013] In some specific embodiments, the transmission gear includes: a helical gear, which is engaged with the worm; a first spur gear, which is coaxially arranged with the helical gear; and a second spur gear, which is engaged with the first spur gear and connected to the screw shaft.

[0014] In some more specific embodiments, the rotating shaft positioning structure also includes: an end cover, which is installed on the fixed seat; a shaft sleeve, one end of which is rotatably installed on the end cover, and a bearing is provided between the end cover, and the other end of the shaft sleeve is fixedly connected to the output shaft of the drive assembly.

[0015] In some embodiments, the drive assembly includes: a drive motor; a motor sleeve, which is arranged outside the drive motor and connected to the fixing seat; a motor tail cover, which is connected to the motor sleeve and defines an accommodating cavity for accommodating the drive motor with the motor sleeve.

[0016] In some embodiments, a first positioning hole is provided on one of the motor sleeve and the fixing seat, and a first positioning protrusion that cooperates with the first positioning hole is provided on the other one of the motor sleeve and the fixing seat.

[0017] In some embodiments, a second positioning hole is provided on one of the motor cover and the motor tail cover, and a second positioning protrusion that cooperates with the second positioning hole is provided on the other of the motor cover and the motor tail cover.

[0018] The present utility model also discloses a rotating screen, comprising: a shell; a screen, the screen having a rotating shaft rotatably connected to the shell; a driving source, the driving source being installed on the shell and connected to one end of the rotating shaft, the driving source being used to drive the rotating shaft to rotate; the rotating shaft positioning structure mentioned above, the rotating shaft positioning structure being installed on the shell and cooperating with the other end of the rotating shaft; wherein: when the rotating shaft positioning structure releases the rotating shaft, the driving source can drive the screen to rotate relative to the shell.

[0019] The beneficial effects of the rotating screen of the present invention are as follows: since the rotating screen adopts the aforementioned rotation positioning structure to clamp the rotating shaft of the screen, the rotating screen can be well maintained in the specified position, has good reliability, and has a low chance of the screen slipping.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of the rotating shaft positioning structure of an embodiment of the utility model;

[0022] Figure 2 yes Figure 1 a vertical cross-section of the structure shown;

[0023] Figure 3This is a partial structural diagram of the rotating shaft positioning structure of an embodiment of the utility model;

[0024] Figure 4 This is a partial structural diagram of a drive assembly according to an embodiment of the present utility model;

[0025] Figure 5 yes Figure 4 a schematic diagram of the exploded structure of the structure shown;

[0026] Figure 6 It is a structural schematic diagram of a rotating screen according to an embodiment of the present utility model.

[0027] Reference numerals:

[0028] 100, shaft positioning structure; 110, fixing seat; 111, bottom plate; 112, cover; 1121, first mounting cavity; 1122, second mounting cavity; 1123, third mounting cavity; 120, drive assembly; 121, drive motor; 122, motor housing; 1221, first positioning protrusion; 123, motor tail cover; 1231, second positioning protrusion; 1232, receiving groove; 124, end cover; 125, shaft sleeve; 126, bearing; 127, rubber ring; 130, transmission Components; 131, screw shaft; 132, worm; 133, transmission gear; 1331, bevel gear; 1332, first spur gear; 1333, second spur gear; 140, movable member; 141, movable bracket; 1411, perforation; 1412, mounting groove; 142, clamping member; 143, pressing nut; 150, fixing member; 101, positioning space; 160, limiting member; 170, first fixing screw; 180, second fixing screw; 190, third fixing screw;

[0029] 200, shaft;

[0030] 300, screen;

[0031] 400. Driving source. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] In the description of this embodiment, terms such as "upper," "lower," "left," "right," "front," and "rear" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0035] Reference below Figure 1-Figure 5 The specific structure of the rotating shaft positioning structure 100 according to a specific embodiment of the present invention is described.

[0036] The present invention discloses a rotating shaft positioning structure 100 for positioning the rotating shaft 200 of a screen 300 to ensure that the screen 300 can be stably maintained in a specified position. Of course, the rotating shaft positioning structure 100 disclosed in the present invention can also be used in other devices that require positioning the rotating shaft 200 in a specified position and need to solve the problem of rotating shaft 200 slipping.

[0037] refer to Figure 1-Figure 3As shown, the rotating shaft positioning structure 100 of this embodiment includes a fixed seat 110, a driving component 120, a transmission component 130, a movable part 140 and a fixed part 150. The driving component 120 is installed in the fixed seat 110, and the transmission component 130 is installed in the fixed seat 110. The transmission component 130 has a power input end and a power output end. The power input end cooperates with the output shaft of the driving component 120. The movable part 140 can be movably installed in the fixed seat 110 and cooperates with the power output end in transmission. The fixed part 150 is installed in the fixed seat 110 and defines a positioning space 101 for clamping the rotating shaft 200 with the movable part 140. It can be understood that in the actual working process, the rotating shaft 200 is installed in the positioning space 101. When the rotating shaft 200 rotates to the specified position and needs to be positioned, the driving component 120 is started, and the power is input from the power input end of the transmission component 130 and output to the movable part 140 through the power output end. Under the action of the power output end, the movable part 140 moves toward the direction close to the fixed part 150, so that the positioning space 101 becomes smaller. When the movable part 140 abuts against the rotating shaft 200, the positioning space 101 defined by the movable part 140 and the fixed part 150 can be tightly fitted with the rotating shaft 200, thereby positioning the rotating shaft 200. Compared with the prior art, which uses a damper to ensure that the screen can be stably maintained in a specified position, in this embodiment, a positioning space 101 for clamping the rotating shaft 200 is formed by setting a fixed part 150 and a movable part 140, and a driving component 120 and a transmission component 130 are used to drive the movable part 140 toward the fixed part 150 to achieve clamping of the rotating shaft 200. On the one hand, there is no technical problem that the damping rubber ring of the damper easily fails to limit the damping of the rotating shaft 200 after a long period of action, causing the rotating shaft 200 to slip. On the other hand, the structure for clamping and positioning is not limited by the size of the screen 300 carried on the rotating shaft 200, and there is no technical problem that the size and weight of the screen 300 need to gradually increase, and the compatibility is better.

[0038] In addition, compared with the prior art, the rotation shaft positioning structure 100 of the present embodiment is used to position the rotation shaft 200 of the screen 300 , which can reduce the torque and cost of the driving source 400 of the rotation shaft 200 .

[0039] refer to Figure 2As shown, the fixing base 110 includes a base plate 111 and a cover shell 112. The cover shell 112 is snapped onto the base plate 111 and connected via a first fixing screw 170. The cover shell 112 is provided with a first mounting cavity 1121 for accommodating the drive assembly 120, a second mounting cavity 1122 for accommodating the transmission assembly 130 and communicating with the first mounting cavity 1121, a third mounting cavity 1123 for accommodating the movable member 140, and a rotation hole for supporting the rotating shaft 200. The movable member 140 is movably mounted in the third mounting cavity 1123, and the fixing member 150 is fixed to the bottom wall of the third mounting cavity 1123. Mounting the drive assembly 120 and the transmission assembly 130 in a relatively enclosed space in this way can protect them, preventing external dirt from contaminating the drive assembly 120 and the transmission assembly 130, and ensuring their stable operation. The rotating shaft 200 extends into the positioning space 101 through the rotating hole. The support of the rotating hole can ensure that the rotating shaft 200 can move smoothly when the movable part 140 releases the rotating shaft 200. In order to reduce rotational friction, a ball bearing 126 can also be set in the rotating hole and sleeved on the rotating shaft 200.

[0040] refer to Figure 3 As shown, the movable member 140 includes a movable bracket 141 and a clamping member 142. One end of the movable bracket 141 is rotatably mounted on the side wall of the first mounting cavity 1121, and the other end cooperates with the power output end. The clamping member 142 is fixedly mounted on the movable bracket 141 by a second fixing screw 180, and defines a positioning space 101 with the fixing member 150. Of course, in other embodiments of the present invention, the clamping member 142 can also be fixedly connected to the movable bracket 141 by other connection methods such as a fixing pin, welding, or bonding, and a gap is provided between the clamping member 142 and the fixing member 150. During actual operation, the power output end drives the movable bracket 141 to rotate relative to the fixing seat 110, so that the clamping member 142 moves closer to or away from the fixing member 150, thereby adjusting the tightness of the clamping shaft 200.

[0041] It can be understood that after assembly, the rotating shaft 200 extends into the positioning space 101 through the through hole 1411. Since there is a gap between the clamping member 142 and the fixing member 150, the rotating shaft 200 will not contact the clamping member 142. When the rotating shaft 200 rotates to the specified position, the driving component 120 starts to drive the movable bracket 141 to rotate relative to the fixing seat 110, so that the gap between the clamping member 142 and the fixing member 150 becomes smaller, so that the rotating shaft 200 is tightly clamped between the clamping member 142 and the fixing member 150, ensuring that the rotating shaft positioning structure 100 of this embodiment can stably position the rotating shaft 200.

[0042] Optionally, both the clamping member 142 and the movable member 140 are provided with a semicircular positioning groove, and the two semicircular positioning grooves are spliced ​​into a positioning space 101. This is conducive to the close contact between the clamping member 142 and the movable member 140 and the outer peripheral wall of the rotating shaft 200 during the clamping process, which is conducive to improving the positioning and clamping effect on the rotating shaft 200. Further optionally, the bottom wall of the positioning groove is respectively provided with mounting holes for installing the first fixing screw 170 and the second fixing screw 180, and the heads of the first fixing screw 170 and the second fixing screw 180 are both hidden in the mounting holes. Such a setting can prevent the heads of the first fixing screw 170 and the second fixing screw 180 from rubbing against the rotating shaft 200, thereby reducing the wear of the rotating shaft 200.

[0043] refer to Figure 2-Figure 3 As shown, the power output end includes a screw shaft 131, which is inserted into the movable part 140. The movable bracket 141 is provided with a through hole 1411 that cooperates with the screw shaft 131. The movable part 140 also includes a clamping nut 143, which cooperates with the screw shaft 131. When the screw shaft 131 rotates, the clamping nut 143 moves along the axial direction of the screw shaft 131, thereby driving the movable bracket 141 to move in a direction close to the fixed part 150. It can be understood that when the screw shaft 131 rotates under the drive component 120, the screw shaft 131 and the clamping nut 143 are engaged, and the clamping nut 143 presses down on the movable bracket 141, and the pressure is transmitted to the movable part 140, and finally the rotating shaft 200 is clamped. Therefore, the movable part 140 can be driven by the simple matching structure of the clamping nut 143 and the screw shaft 131, simplifying the movable component while ensuring the clamping effect on the rotating shaft 200.

[0044] It should be noted that the end of the movable bracket 141 away from the through-hole 1411 is fixed to the side wall of the first mounting cavity 1121 by a locating pin. When the rotating shaft 200 is not clamped, the movable bracket 141 has a certain amount of rotational space along the central axis of the locating pin. When the rotating shaft 200 is clamped, this space is completely eliminated during the engagement process between the screw shaft 131 and the compression nut 143. This ensures stable clamping of the rotating shaft 200 and prevents contact between the clamping member 142 and the rotating shaft 200 during normal rotation, thereby reducing wear on the rotating shaft 200.

[0045] Optionally, the movable bracket 141 is provided with a mounting groove 1412 connected to the through hole 1411, and the tightening nut 143 is installed in the mounting groove 1412; the rotating shaft positioning structure 100 also includes a limit member 160, which is installed in the first mounting cavity 1121 and is arranged corresponding to the mounting groove 1412. The limit member 160 is used to prevent the tightening nut 143 from falling off the screw shaft 131. It is understood that when the rotating shaft 200 is to be rotated again, it needs to be released. At this time, the screw shaft 131 will rotate in the opposite direction under the action of the drive assembly 120, causing the compression nut 143 to gradually disengage from the screw shaft 131. To prevent the compression nut 143 from completely disengaging from the screw shaft 131, the compression nut 143 is installed in the mounting groove 1412 on the movable bracket 141, and a limiter 160 is installed in the first mounting cavity 1121. The limiter 160 is fixed to the cover 112 by a third fixing screw 190. The limiter 160 is used to limit the extreme position of the compression nut 143 and prevent the compression nut 143 from disengaging from the screw shaft 131 during the release of torque. Optionally, the limiter 160 is a plate-shaped structure, which simplifies the structure of the limiter 160, facilitates assembly, ensures the limiting effect on the compression nut 143, and reduces costs. To ensure the installation stability of the limiter 160, the third fixing screw 190 can be installed at both ends of the limiter plate.

[0046] Optionally, the compression nut 143 is a ball nut. It is understandable that the contact surface between the ball nut and the movable bracket 141 is an arc surface. Compared with an ordinary nut, the ball nut can better compress the movable bracket 141 so that the clamping member 142 abuts against the rotating shaft 200 to compress the rotating shaft 200.

[0047] refer to Figure 3-Figure 4 As shown, the power input end includes a worm 132, which is connected to the output shaft of the drive assembly 120; the transmission assembly 130 also includes at least one transmission gear 133, which transmits the power of the worm 132 to the screw shaft 131 to drive the screw shaft 131 to rotate. It can be understood that in actual operation, the drive assembly 120 drives the worm 132 to rotate, and the worm 132 drives the transmission gear 133 to rotate in turn, thereby driving the screw shaft 131 to rotate. Through the power transmission between the worm 132 and the at least one transmission gear 133, the function of reducing the speed and increasing the output torque can be achieved, reducing the power requirement of the drive assembly 120, ensuring the stable rotation of the screw shaft 131, and reducing the power consumption and cost of the entire drive assembly 120.

[0048] Optionally, the transmission gear 133 includes a helical gear 1331, a first spur gear 1332, and a second spur gear 1333. The helical gear 1331 is meshed with the worm 132. The first spur gear 1332 and the helical gear 1331 are coaxially arranged. The second spur gear 1333 is meshed with the first spur gear 1332 and connected to the screw shaft 131. The power transmission through the helical gear 1331, the first spur gear 1332, and the second spur gear 1333 ensures the stable rotation of the screw shaft 131. Further optionally, the first spur gear 1332 and the helical gear 1331 are integrally formed and manufactured on the same rotating shaft 200, eliminating the assembly process and reducing the number of parts of the transmission assembly 130.

[0049] It should be noted that in other embodiments of the present invention, the power output terminal may also be a vertically movable lifting column. During operation, when the lifting column rises, it drives the movable bracket 141 to release the rotating shaft 200. When the lifting column falls, it drives the movable bracket 141 to compress the rotating shaft 200. In other words, in other embodiments of the present invention, the movable bracket 141 and the power output terminal can be combined in various ways, not limited to the screw shaft 131 and compression nut 143 of the present embodiment.

[0050] refer to Figure 4-Figure 5 As shown, the shaft positioning structure 100 also includes an end cap 124 and a sleeve 125. The end cap 124 is mounted on the fixed base 110. One end of the sleeve 125 is rotatably mounted on the end cap 124, with a bearing 126 disposed between the end cap 124 and the end cap 124. The other end of the sleeve 125 is fixedly connected to the output shaft of the drive assembly 120. It is understood that the first mounting cavity 1121 is open at both ends. The drive assembly 120 is mounted within the first mounting cavity 1121. The output shaft passes through the first mounting cavity 1121 and is connected to the end cap 124 via the sleeve 125. This provides support at both ends of the output shaft, allowing the worm 132 to be mounted on a shaft 200 with support at both ends. This ensures the rotational stability of the worm 132, thereby indirectly ensuring the stable rotation of the screw shaft 131. The additional sleeve 125 can support the worm 132 and prevent it from axial movement. The end cap 124 can be fixed to the cover shell 112 using structures such as screws or fixing pins. The additional bearing 126 can reduce wear and extend the service life of the sleeve 125. The specific model and quantity of the bearing 126 can be selected according to actual needs, and the specific parameters of the bearing 126 are not limited here.

[0051] refer to Figure 4-Figure 5As shown, the drive assembly 120 includes a drive motor 121, a motor sleeve 122 and a motor tail cover 123. The motor sleeve 122 is sleeved on the outside of the drive motor 121, and the motor sleeve 122 is plugged into the first mounting cavity 1121. The motor tail cover 123 is connected to the motor sleeve 122 and defines a housing cavity for accommodating the drive motor 121 with the motor sleeve 122. By installing the drive motor 121 on the motor sleeve 122 and the motor tail cover 123, the installation of the drive motor 121 is facilitated, and the drive of the drive motor 121 is well protected. Optionally, a housing groove 1232 for accommodating the drive motor 121 is provided on the motor tail cover 123. A rubber ring 127 is provided in the housing groove 1232. The rubber ring 127 can play a buffering role and better protect the drive motor 121.

[0052] Optionally, a first positioning protrusion 1221 is provided on the motor sleeve 122, and a first positioning hole is provided on the inner side wall of the first mounting cavity 1121. The driving motor 121 can be fixed in a specified position by the positioning cooperation of the first positioning hole and the first positioning hole, thereby ensuring the center distance of the transmission gear 133 during the transmission process. In this embodiment, there are two first positioning holes and two first positioning protrusions 1221, and the two first positioning holes are symmetrically arranged about the output axis. Of course, in other embodiments of the present invention, a first positioning hole is provided on the motor sleeve 122, and a first positioning protrusion 1221 is provided on the inner side wall of the first mounting cavity 1121. The shape, number and distribution of the first positioning hole and the first positioning protrusion 1221 can be selected according to actual needs.

[0053] Optionally, a second positioning protrusion 1231 is provided on the motor tail cover 123, and a second positioning hole that cooperates with the second positioning protrusion 1231 is provided on the motor cover 122. The positioning cooperation of the second positioning hole and the second positioning hole can fix the drive motor 121 in a specified position, thereby ensuring the center distance of the transmission gear 133 during the transmission process. In this embodiment, there are two second positioning holes and two second positioning protrusions 1231, and the two second positioning holes are symmetrically arranged about the output axis. Of course, in other embodiments of the present utility model, the motor cover 122 is provided with a second positioning protrusion 1231, and the motor tail cover 123 is provided with a second positioning hole. The shape, number and distribution of the second positioning holes and the second positioning protrusion 1231 can be selected according to actual needs.

[0054] Optionally, the motor tail cover 123 is fixed to the cover shell 112 by a positioning pin or a positioning screw. Thus, the installation stability of the motor tail cover 123 can be guaranteed, thereby ensuring that the motor tail cover 123 stably supports the shaft sleeve 125.

[0055] It should be noted that in this embodiment, the drive assembly 120 may also utilize other rotary drive structures, such as a rotary cylinder, as needed, and is not limited to the drive motor 121 of this embodiment. Furthermore, the drive assembly 120 may also utilize a linear drive or other structure in conjunction with a rack and pinion transmission structure and the screw shaft 131 to drive the screw shaft 131.

[0056] The advantages of the shaft positioning structure 100 of this embodiment are as follows:

[0057] First, it has high versatility and is backward compatible. At the same time, the damper structure can be removed, thereby reducing the torque and cost of the driving source 400 of the rotating shaft 200.

[0058] Second: it can realize the clamping and fixing of screens 300 of different sizes and weights, with high operating efficiency;

[0059] Third: The clamping and releasing time is short, the production cost is low, and the mold opening cycle is shortened.

[0060] The utility model also discloses a rotating screen, referring to Figure 6 As shown, the rotating screen includes a housing, a screen 300, a driving source 400, and the aforementioned rotating shaft positioning structure 100. The screen 300 has a rotating shaft 200 that is rotatably connected to the housing. The driving source 400 is mounted on the housing and connected to one end of the rotating shaft 200. The driving source 400 is used to drive the rotating shaft 200 to rotate. The rotating shaft positioning structure 100 is mounted on the housing and cooperates with the other end of the rotating shaft 200. When the rotating shaft positioning structure 100 releases the rotating shaft 200, the driving source 400 can drive the screen 300 to rotate relative to the housing. It is understandable that the rotating screen generally also includes a control module, which can be an independent controller, such as an MCU controller, a PLC controller, or a programmable microcomputer that are well-known in the prior art, or a power switch. During actual operation, while the drive source 400 is driving the screen 300 to rotate, the drive motor 121 of the rotation shaft positioning structure 100 is stopped. When the screen 300 rotates to a designated position, the control module sends a signal to the drive motor 121 to rotate it, causing the rotation shaft positioning structure 100 to clamp the rotation shaft 200. Because the rotating screen of this embodiment utilizes the aforementioned rotation positioning structure to clamp the rotation shaft 200 of the screen 300, the rotating screen 300 is effectively held in the designated position, providing excellent reliability and minimizing the risk of the screen 300 slipping.

[0061] It should be noted that the structure of the driving source 400 can be selected according to actual needs. As long as the structure can drive the screen 300 to rotate, it can be used as the driving source 400. The structure of the driving source 400 is not specifically limited here.

[0062] Throughout this specification, references to "some embodiments," "other embodiments," and the like indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0063] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A rotating shaft positioning structure, characterized in that: include: Fixed seat (110); A drive assembly (120), the drive assembly (120) being installed in the fixing seat (110); a transmission assembly (130), the transmission assembly (130) being installed in the fixing seat (110), the transmission assembly (130) having a power input end and a power output end, the power input end being matched with the output shaft of the drive assembly (120); A movable member (140), the movable member (140) being movably mounted on the fixed seat (110) and being in transmission cooperation with the power output end; A fixing member (150) is installed on the fixing seat (110) and defines a positioning space (101) for clamping the rotating shaft (200) with the movable member (140).

2. The rotating shaft positioning structure according to claim 1, characterized in that: The movable member (140) comprises: A movable bracket (141), one end of the movable bracket (141) is rotatably mounted on the fixed seat (110), and the other end is matched with the power output end; A clamping member (142), the clamping member (142) is fixedly mounted on the movable bracket (141), and defines the positioning space (101) together with the fixing member (150); wherein: The power output end drives the movable bracket (141) to rotate relative to the fixing seat (110), so that the clamping member (142) moves closer to or farther from the fixing member (150), thereby adjusting the tightness of clamping the rotating shaft (200).

3. The rotating shaft positioning structure according to claim 2, characterized in that: The power output end includes a screw shaft (131), and the screw shaft (131) is inserted into the movable part (140); the movable bracket (141) is provided with a through hole (1411) that cooperates with the screw shaft (131); the movable part (140) also includes a clamping nut (143), and the clamping nut (143) cooperates with the screw shaft (131). When the screw shaft (131) rotates, the clamping nut (143) moves along the axial direction of the screw shaft (131), thereby driving the movable bracket (141) to move in a direction close to the fixed part (150).

4. The rotating shaft positioning structure according to claim 3, characterized in that: The movable bracket (141) is provided with a mounting groove (1412) connected to the through hole (1411), and the clamping nut (143) is installed in the mounting groove (1412); the rotating shaft positioning structure also includes a limiting member (160), the limiting member (160) is installed on the fixing seat (110) and is arranged corresponding to the mounting groove (1412), and the limiting member (160) is used to prevent the clamping nut (143) from falling off from the screw shaft (131).

5. The rotating shaft positioning structure according to claim 3, characterized in that: The power input end includes a worm (132), and the worm (132) is connected to the output shaft of the driving assembly (120); the transmission assembly (130) further includes at least one transmission gear (133), and at least one transmission gear (133) transmits the power of the worm (132) to the screw shaft (131) to drive the screw shaft (131) to rotate.

6. The rotating shaft positioning structure according to claim 5, characterized in that: The transmission gear (133) comprises: a helical gear (1331), the helical gear (1331) being meshed with the worm (132); a first spur gear (1332), wherein the first spur gear (1332) is coaxially arranged with the helical gear (1331); A second spur gear (1333), the second spur gear (1333) is engaged with the first spur gear (1332) and is connected to the screw shaft (131).

7. The rotating shaft positioning structure according to claim 6, characterized in that: The rotating shaft positioning structure further includes: an end cover (124), the end cover (124) being mounted on the fixing seat (110); A shaft sleeve (125), one end of which is rotatably mounted on the end cover (124), and a bearing (126) is provided between the shaft sleeve and the end cover (124), and the other end of which is fixedly connected to the output shaft of the drive assembly (120).

8. The rotating shaft positioning structure according to any one of claims 1 to 4, characterized in that: The drive assembly (120) comprises: a driving motor (121); a motor sleeve (122), the motor sleeve (122) being sleeved outside the driving motor (121), and the motor sleeve (122) being connected to the fixing seat (110); A motor tail cover (123), the motor tail cover (123) is connected to the motor sleeve (122), and defines an accommodating cavity for accommodating the drive motor (121) with the motor sleeve (122).

9. The rotating shaft positioning structure according to claim 8, characterized in that: A first positioning hole is provided on one of the motor sleeve (122) and the fixing seat (110), and a first positioning protrusion (1221) that cooperates with the first positioning hole is provided on the other of the motor sleeve (122) and the fixing seat (110); and / or: A second positioning hole is provided on one of the motor sleeve (122) and the motor tail cover (123), and a second positioning protrusion (1231) that cooperates with the second positioning hole is provided on the other of the motor sleeve (122) and the motor tail cover (123).

10. A rotating screen, characterized in that: include: shell: a screen (300), wherein the screen (300) has a rotating shaft (200) rotatably connected to the housing; a driving source (400), the driving source (400) being mounted on the housing and connected to one end of the rotating shaft (200), the driving source (400) being used to drive the rotating shaft (200) to rotate; The rotating shaft positioning structure according to any one of claims 1 to 9, wherein the rotating shaft positioning structure is mounted on the housing and cooperates with the other end of the rotating shaft (200); wherein: When the rotating shaft positioning structure releases the rotating shaft (200), the driving source (400) can drive the screen (300) to rotate relative to the housing.

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