Rotation limiting mechanism and pan-tilt camera
By using the combination of the actuating part and the resisting part of the rotation limit mechanism to limit the rotation angle, the problem of cable entanglement caused by the gimbal camera motor rotating more than 360° is solved, achieving greater practicality and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-22
- Publication Date
- 2026-04-10
AI Technical Summary
Existing gimbal cameras are prone to wire tangling or damage when the motor rotates more than 360°. Existing solutions such as conductive slip rings are not practical and cannot meet user needs.
A rotation limiting mechanism is adopted, including a first connecting member, a rotation limiting member and a second connecting member. Through the cooperation of the actuating part and the supporting part, the rotation angle is limited, the cable tangling is avoided, and a rotation of more than 360° is achieved.
It effectively avoids cable tangling and damage, meets users' needs for camera rotation of more than 360°, is more practical, and has low cost and high reliability.
Smart Images
Figure CN121828561A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of gimbal equipment technology, and in particular to a rotation limiting mechanism and a gimbal camera. Background Technology
[0002] Currently, gimbal cameras use motors to drive the gimbal arm to rotate, which in turn rotates the camera mounted on the gimbal arm. During use, the motor on the gimbal camera's yaw axis often needs to rotate more than 360°.
[0003] However, when the motor rotates more than 360°, it often causes the wires in the gimbal to become tangled or even damaged. Existing technologies often use conductive slip rings and other methods to avoid these problems, but this method is not practical and still cannot meet users' needs for camera rotation exceeding 360°. Summary of the Invention
[0004] Therefore, it is necessary to provide a rotation limiting mechanism and a gimbal camera to address the problem that existing methods such as conductive slip rings are not practical and still cannot meet users' needs for camera rotation exceeding 360°.
[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:
[0006] In a first aspect, embodiments of this application provide a rotation limiting mechanism, including:
[0007] The first connecting member has a first limiting part thereon;
[0008] A rotating limiting member, having a second limiting portion thereon and rotatably connected to the first connecting member, wherein at least two abutting portions are sequentially arranged around its own rotation axis; and
[0009] The second connector has a toggle part and is rotatably connected to the first connector.
[0010] Wherein, the at least two abutting parts are located on the rotation path of the actuating part, and the actuating part can contact the abutting part on the current rotation path; the second connecting member rotates one revolution relative to the first connecting member, causing the actuating part to abut the abutting part on the current rotation path; when the actuating part abuts against the side of the abutting part at the beginning or end that is away from the adjacent abutting part, the first limiting part cooperates with the second limiting part to prevent the rotation limiting member from rotating relative to the first connecting member.
[0011] By adopting the above technical solution, each rotation of the second connector relative to the first connector causes the actuating part to actuate one of the supporting parts, thereby causing the rotation limiting member to rotate relative to the first connector. When the actuating part abuts against the side of the supporting part at the beginning or end that is away from the adjacent supporting part, the first limiting part cooperates with the second limiting part to prevent the rotation limiting member from rotating relative to the first connector, thereby preventing the actuating part from continuing to actuate the supporting part at the beginning or end, and thus preventing the second connector from continuing to rotate relative to the first connector. During this process, since the rotation limiting member has at least two supporting parts arranged around its own rotation axis, the actuating part can actuate at least one supporting part without obstruction, that is, the second connector can rotate at least one full rotation relative to the first connector without obstruction. Thus, the rotation angle of the second connector relative to the first connector is both limited and can exceed 360°. Connecting either the first or second connector to the camera can meet the user's need for camera rotation exceeding 360° without the need for cable tangling and damage, making it more practical.
[0012] In one embodiment of the first aspect, when the actuating part actuates the supporting part on the current rotation path, the rotation limiting member rotates by a preset angle in the opposite direction to the second connecting member, so that the next supporting part rotates into the rotation path of the actuating part.
[0013] By adopting the above technical solution, when the actuating part actuates one of the supporting parts, the adjacent supporting part moves to the position of the previous supporting part as the rotating limiting member rotates, that is, moves into the rotation path of the actuating part, so as to cooperate with the actuating part during the next rotation of the second connecting member relative to the first connecting member.
[0014] In one embodiment of the first aspect, the number of the abutting parts is N, where N is an integer and N≥2;
[0015] The rotational travel of the rotating limiting component is N-1 times the preset angle.
[0016] By adopting the above technical solution, the second connector rotates N-1 revolutions relative to the first connector, and the actuating part successively actuates N-1 abutting parts, causing the rotation limiting member to rotate a preset angle*(N-1) in the opposite direction to the second connector. At this time, the rotation limiting member has completed its own rotation stroke and cannot continue to rotate due to the restriction of the first and second limiting parts. Subsequently, the second connector rotates one revolution or nearly one revolution relative to the first connector, causing the actuating part to abut against the side of the abutting part at the tail end that is away from the adjacent abutting part, and the second connector can no longer rotate.
[0017] In one embodiment of the first aspect, the rotation axis of the rotation limiting member is parallel to the rotation axis of the second connecting member, the abutting portion protrudes radially from the rotation limiting member, and the actuating portion protrudes radially from the second connecting member.
[0018] By adopting the above technical solution, for every revolution of the second connector relative to the first connector, the actuating part on the second connector will inevitably rotate to the side of the second connector facing the rotation limiting member at a certain moment, that is, protruding towards the rotation limiting member along the radial direction of the second connector. At this time, the actuating part can actuate the supporting part, thereby causing the rotation limiting member to rotate relative to the first connector by a preset angle.
[0019] In one embodiment of the first aspect, the first limiting portion includes a first limiting groove, and the second limiting portion includes a first limiting protrusion, wherein the first limiting protrusion is slidably disposed in the first limiting groove about the rotation axis of the rotating limiting member.
[0020] By adopting the above technical solution, during the rotation of the rotating limiting member relative to the first connecting member, the first limiting protrusion rotates with the rotating limiting member and slides within the first limiting groove. When the actuating part abuts against the supporting part at the beginning or end, specifically against the side of the supporting part away from the adjacent supporting part, the first limiting protrusion is located precisely at one end of the first limiting groove and abuts against the inner wall of the first limiting groove, thereby preventing the rotating limiting member from rotating relative to the first connecting member.
[0021] In one embodiment of the first aspect, the first limiting portion includes a second limiting protrusion, the second limiting portion includes a second limiting groove, and the second limiting protrusion is slidably disposed in the second limiting groove about the rotation axis of the rotating limiting member.
[0022] By adopting the above technical solution, during the rotation of the rotating limiting member relative to the first connecting member, the second limiting protrusion rotates relative to the rotating limiting member and slides within the second limiting groove. When the actuating part abuts against the supporting part at the beginning or end, specifically against the side of the supporting part away from the adjacent supporting part, the second limiting protrusion is precisely located at one end of the second limiting groove and abuts against the inner wall of the second limiting groove, thereby preventing the rotating limiting member from rotating relative to the first connecting member.
[0023] In one embodiment of the first aspect, a damping element is provided between the rotation limiting member and the first connecting member.
[0024] By adopting the above technical solution, the damping component can enhance the frictional resistance between the rotating limiting component and the first connecting component, so that during the use of the product, the rotating limiting component can only rotate relative to the first connecting component under the action of the actuating part, and cannot deviate on its own, thereby avoiding affecting the fitting accuracy of the supporting part and the actuating part on the rotating limiting component.
[0025] In one embodiment of the first aspect, the first connector is provided with a rotating shaft, the damping member is circumferentially disposed on the rotating shaft, and the rotation limiting member is circumferentially disposed on the damping member.
[0026] By adopting the above technical solution, the rotating limiting component is rotatably connected to the first connecting component through the damping component and the rotating shaft. The damping component can enhance the frictional resistance between the rotating limiting component and the rotating shaft.
[0027] In one embodiment of the first aspect, the first connector includes a motor stator, and the second connector includes a motor rotor; or,
[0028] The first connector includes a motor rotor, and the second connector includes a motor stator.
[0029] By adopting the above technical solution, the rotation limiting mechanism can directly limit the rotation angle of the motor rotor, thereby preventing the cable from getting tangled and damaged, while allowing the rotation angle of the motor rotor to exceed 360°.
[0030] Secondly, this application also provides a gimbal camera, including the rotation limiting mechanism described in any of the above embodiments.
[0031] Compared to related technologies, the beneficial effects of this application are as follows: In the aforementioned rotation limiting mechanism, since at least two abutting portions are located on the rotation path of the actuating portion, the actuating portion can contact the abutting portion on the current rotation path. Therefore, for each revolution of the second connecting member relative to the first connecting member, the actuating portion can actuate one of the abutting portions, thereby causing the rotation limiting member to rotate relative to the first connecting member. When the actuating portion abuts against the side of the abutting portion at the beginning or end that is away from the adjacent abutting portion, the first limiting portion cooperates with the second limiting portion to prevent the rotation limiting member from rotating relative to the first connecting member, thereby preventing the actuating portion from continuing to actuate the abutting portion at the beginning or end, and thus preventing the second connecting member from continuing to rotate relative to the first connecting member. During this process, since at least two abutting portions are provided on the rotation limiting member around its own rotation axis, the actuating portion can actuate at least one abutting portion without obstruction, that is, the second connecting member can rotate at least one revolution relative to the first connecting member without obstruction. Thus, the rotation angle of the second connecting member relative to the first connecting member is both limited and can exceed 360°. Connecting either the first or second connector to the camera allows users to rotate the camera more than 360° without damaging the cable by tangling it, making it more practical. Attached Figure Description
[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0033] Figure 1 This is a schematic diagram of the structure of the rotation limiting mechanism in some embodiments of this application;
[0034] Figure 2 This is an exploded view of the rotation limiting mechanism in some embodiments of this application;
[0035] Figure 3 This is a schematic diagram showing the cooperation relationship between the rotation limiting member and the second connecting member in some embodiments of this application;
[0036] Figure 4 This is a schematic diagram of the state of the rotation limiting mechanism in some embodiments of this application. Figure 1 ;
[0037] Figure 5 This is a schematic diagram of the state of the rotation limiting mechanism in some embodiments of this application. Figure 2 ;
[0038] Figure 6 This is a schematic diagram of the state of the rotation limiting mechanism in some embodiments of this application. Figure 3 ;
[0039] Figure 7 This is a schematic diagram of the state of the rotation limiting mechanism in some embodiments of this application. Figure 4 ;
[0040] Figure 8 This is an exploded view of the rotation limiting mechanism in some other embodiments of this application;
[0041] Figure 9 This is a partial structural diagram of the gimbal camera in some embodiments of this application.
[0042] Explanation of reference numerals in the attached figures:
[0043] 10. Rotary limit mechanism; 20. Gimbal arm;
[0044] 100, First connecting member; 110, First limiting part; 111, First limiting groove; 112, Second limiting protrusion; 120, Protrusion; 130, Rotating shaft; 200, Rotation limiting member; 210, Second limiting part; 211, First limiting protrusion; 212, Second limiting groove; 220, Supporting part; 300, Second connecting member; 310, Actuating part; 400, Damping member. Detailed Implementation
[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0047] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0051] Existing limiting mechanisms typically only restrict the rotor's rotation angle to no more than 360°, which cannot meet users' needs for camera rotation exceeding 360°, resulting in poor practicality.
[0052] Therefore, please refer to the following: Figure 1 and Figure 2 The embodiments of this application provide a rotation limiting mechanism 10, including a first connector 100, a rotation limiting member 200 and a second connector 300.
[0053] Specifically, the first connector 100 is provided with a first limiting part 110.
[0054] The rotation limiting member 200 is provided with a second limiting part 210, which is rotatably connected to the first connecting member 100. In addition, at least two abutting parts 220 are sequentially provided on the rotation limiting member 200 around its own rotation axis.
[0055] Understandably, the second limiting portion 210 on the rotation limiting member 200 cooperates with the first limiting portion 110 on the first connecting member 100, allowing the rotation limiting member 200 to rotate relative to the first connecting member 100 within a limited angle range, which is also the rotation range of the rotation limiting member 200.
[0056] The second connector 300 is provided with a toggle part 310, which is rotatably connected to the first connector 100.
[0057] At least two abutment portions 220 are located on the rotation path of the actuating portion 310, and the actuating portion 310 can contact the abutment portion 220 on the current rotation path. Each rotation of the second connecting member 300 relative to the first connecting member 100 causes the actuating portion 310 to actuate the abutment portion 220 on the current rotation path. When the actuating portion 310 abuts against the side of the abutment portion 220 at the beginning or end that is away from the adjacent abutment portion 220, the first limiting portion 110 cooperates with the second limiting portion 210 to prevent the rotation limiting member 200 from rotating relative to the first connecting member 100.
[0058] Understandably, at least two abutting portions 220 are sequentially arranged around the rotation axis of the rotation limiting member 200, with one abutting portion 220 located at the beginning of each abutting portion 220 and another abutting portion 220 located at the end of each abutting portion 220. When the actuating portion 310 abuts against the abutting portion 220 at the beginning, specifically against the side of that abutting portion 220 away from the adjacent abutting portion 220, the first limiting portion 110, in conjunction with the second limiting portion 210, prevents the rotation limiting member 200 from rotating forward relative to the first connecting member 100. When the actuating portion 310 abuts against the abutting portion 220 at the end, specifically against the side of that abutting portion 220 away from the adjacent abutting portion 220, the first limiting portion 110, in conjunction with the second limiting portion 210, prevents the rotation limiting member 200 from rotating in the opposite direction relative to the first connecting member 100.
[0059] In the aforementioned rotation limiting mechanism 10, since at least two abutment portions 220 are located on the rotation path of the actuating portion 310, the actuating portion 310 can contact the abutment portion 220 on the current rotation path. Therefore, for each revolution of the second connecting member 300 relative to the first connecting member 100, the actuating portion 310 can actuate one of the abutment portions 220, thereby causing the rotation limiting member 200 to rotate relative to the first connecting member 100. When the actuating portion 310 abuts against the side of the abutment portion 220 at the beginning or end that is away from the adjacent abutment portion 220, the first limiting portion 110 cooperates with the second limiting portion 210 to prevent the rotation limiting member 200 from rotating relative to the first connecting member 100, thereby preventing the actuating portion 310 from continuing to actuate the abutment portion 220 at the beginning or end, and thus preventing the second connecting member 300 from continuing to rotate relative to the first connecting member 100. During this process, since the rotation limiting member 200 has at least two abutment portions 220 arranged around its own rotation axis, the actuating part 310 can actuate at least one abutment portion 220 without obstruction. That is, the second connecting member 300 can rotate at least one full turn relative to the first connecting member 100 without obstruction. Thus, the rotation angle of the second connecting member 300 relative to the first connecting member 100 is both limited and can exceed 360°. Connecting either the first connecting member 100 or the second connecting member 300 to the camera can meet the user's need for camera rotation exceeding 360° without the risk of cable tangling and damage, making it more practical.
[0060] It should be noted that the aforementioned rotation limiting mechanism 10 can limit the relative rotation angle of the first connecting member 100 and the second connecting member 300, while allowing the relative rotation angle of the first connecting member 100 and the second connecting member 300 to exceed 360°. In this case, the first connecting member 100 can be a fixed component, such as a motor stator or a component fixedly connected to the motor stator (such as a base), or a rotating component, such as a motor rotor or a component fixedly connected to the motor rotor (such as a gimbal arm 20). This embodiment does not limit this. Correspondingly, when the first connecting member 100 is a fixed component, the second connecting member 300 is a rotating component; when the first connecting member 100 is a rotating component, the second connecting member 300 is a fixed component.
[0061] In this embodiment, the first connector 100 includes a motor stator, the second connector 300 includes a motor rotor, and the motor rotor is used to connect to the camera.
[0062] In use, the aforementioned rotation limiting mechanism 10 can directly limit the rotation angle of the motor rotor, thereby preventing the cable from getting tangled and damaged, while allowing the rotation angle of the motor rotor to exceed 360°, which means that the camera can rotate more than 360°.
[0063] In another embodiment of this application, the first connector 100 includes a motor rotor, and the second connector 300 includes a motor stator.
[0064] In some embodiments, when the actuating part 310 actuates the supporting part 220 on the current rotation path, the rotation limiting member 200 rotates by a preset angle in the opposite direction to the second connecting member 300, so that the next supporting part 220 rotates into the rotation path of the actuating part 310.
[0065] Understandably, the actuating part 310 actuates the supporting part 220 to rotate the rotation limiting member 200 by a preset angle. This preset angle is equal to the angle between the lines connecting the centers of the two adjacent supporting parts 220 and the rotation axis of the rotation limiting member 200. This allows the adjacent supporting part 220 to move to the position of the previous supporting part 220 as the rotation limiting member 200 rotates, i.e., to move into the rotation path of the actuating part 310, so that it can cooperate with the actuating part 310 during the next rotation of the second connecting member 300 relative to the first connecting member 100.
[0066] Furthermore, in some embodiments, the number of abutment portions 220 is N, where N is an integer and N≥2.
[0067] Correspondingly, the rotation stroke of the rotation limiter 200 is N-1 times the preset angle.
[0068] Taking the support part 220 as an example, starting from the first end of each support part 220, the second connector 300 rotates one revolution relative to the first connector 100, and the actuating part 310 actuates one support part 220, causing the rotation limiter 200 to rotate a preset angle in the opposite direction to the second connector 300.
[0069] Similarly, the second connector 300 rotates N-1 revolutions relative to the first connector 100, and the actuating part 310 actuates N-1 abutting parts 220 in succession, causing the rotation limiting part 200 to rotate a preset angle*(N-1) in the opposite direction to the second connector 300.
[0070] At this point, the rotation limiter 200 has completed its rotational stroke and is unable to continue rotating due to the restriction of the first limiter 110 and the second limiter 210.
[0071] Subsequently, the second connector 300 rotates one or nearly one revolution relative to the first connector 100, causing the actuating part 310 to abut against the side of the tail end abutting part 220 away from the adjacent abutting part 220, and the second connector 300 can no longer rotate.
[0072] In some embodiments, the rotation axis of the rotation limiting member 200 is parallel to the rotation axis of the second connector 300. The abutment portion 220 protrudes radially from the rotation limiting member 200, and the actuating portion 310 protrudes radially from the second connector 300.
[0073] Understandably, the rotation limiting member 200 and the second connecting member 300 are arranged side by side, and the main body of the rotation limiting member 200 and the main body of the second connecting member 300 do not directly contact each other. One of the abutting portions 220 on the rotation limiting member 200 protrudes radially toward the second connecting member 300, also not directly contacting the main body of the second connecting member 300. In use, for each revolution of the second connecting member 300 relative to the first connecting member 100, the actuating portion 310 on the second connecting member 300 will necessarily rotate to the side of the second connecting member 300 facing the rotation limiting member 200 at a certain moment, that is, protruding radially toward the rotation limiting member 200. At this time, the actuating part 310 can actuate the aforementioned supporting part 220, thereby causing the rotation limiting member 200 to rotate relative to the first connecting member 100 by a preset angle, and causing the adjacent supporting part 220 to rotate to the side of the rotation limiting member 200 facing the second connecting member 300. That is, the adjacent supporting part 220 is arranged to protrude towards the second connecting member 300 along the radial direction of the rotation limiting member 200, so as to cooperate with the actuating part 310 during the next rotation of the second connecting member 300 relative to the first connecting member 100. When in conjunction, if the adjacent supporting part 220 is not at the beginning or end, the adjacent supporting part 220 can be moved by the actuating part 310, continuing to drive the rotation limiting member 200 to rotate relative to the first connecting member 100 by a preset angle; if the adjacent supporting part 220 is at the beginning or end, the first limiting part 110 cooperates with the second limiting part 210 to prevent the rotation limiting member 200 from rotating relative to the first connecting member 100, so that the adjacent supporting part 220 cannot be moved by the actuating part 310, but instead abuts against the actuating part 310, preventing the actuating part 310 and the second connecting member 300 from continuing to rotate relative to the first connecting member 100, thereby limiting the rotation angle of the second connecting member 300 relative to the first connecting member 100.
[0074] Please combine Figure 3 Specifically, the abutting part 220 has a proximal end near the rotation axis of the rotation limiting member 200 and a distal end opposite to the proximal end. Let A1 be the distance between the proximal end and the rotation axis of the rotation limiting member 200, and A2 be the distance between the distal end and the rotation axis of the rotation limiting member 200. Similarly, the actuating part 310 has a proximal end near the rotation axis of the second connecting member 300 and a distal end opposite to the proximal end. Let B1 be the distance between the proximal end and the rotation axis of the second connecting member 300, and B2 be the distance between the distal end and the rotation axis of the second connecting member 300. Furthermore, let D be the distance between the rotation axis of the rotation limiting member 200 and the rotation axis of the second connecting member 300. The following conditions must be met: A1 + B2 < D, A2 + B1 < D, and A2 + B2 > D.
[0075] Please refer to the following: Figures 4 to 6In this embodiment, the number of abutment parts 220 is three.
[0076] by Figure 4 Taking the shown perspective as an example, the three abutting parts 220 are arranged clockwise around the rotation axis of the rotation limiting member 200. In the initial state, the first abutting part 220 protrudes radially toward the second connecting member 300 along the rotation limiting member 200, and the actuating part 310 abuts against the side of the first abutting part 220 away from the next abutting part 220, that is, against the side of the first abutting part 220 away from the adjacent abutting part 220. At this time, the first limiting part 110 and the second limiting part 210 cooperate to prevent the rotation limiting member 200 from rotating clockwise relative to the first connecting member 100, thereby preventing the actuating part 310 from rotating counterclockwise around the rotation axis of the second connecting member 300, and further preventing the second connecting member 300 from rotating counterclockwise relative to the first connecting member 100.
[0077] Please combine Figure 5 Based on this, the second connector 300 rotates clockwise one revolution relative to the first connector 100, causing the actuating part 310 to actuate the first abutting part 220, which in turn causes the rotating limiting part 200 to rotate counterclockwise by a preset angle relative to the first connector 100, so that the second abutting part 220 protrudes towards the second connector 300 along the radial direction of the rotating limiting part 200.
[0078] Please combine Figure 6 Subsequently, the second connector 300 continues to rotate clockwise one revolution relative to the first connector 100, causing the actuating part 310 to actuate the next supporting part 220, which in turn causes the rotating limiting part 200 to continue to rotate counterclockwise by a preset angle relative to the first connector 100, so that the last supporting part 220 protrudes towards the second connector 300 along the radial direction of the rotating limiting part 200.
[0079] Please combine Figure 7Finally, the second connector 300 continues to rotate clockwise relative to the first connector 100. When the second connector 300 has rotated nearly one revolution, the actuating part 310 contacts the last abutting part 220. After the actuating part 310 moves the last abutting part 220 a short distance, the first limiting part 110 engages with the second limiting part 210 again to prevent the rotation limiting member 200 from continuing to rotate counterclockwise relative to the first connector 100. At this time, the actuating part 310 has not yet disengaged from the last abutting part 220, but rather abuts against the side of the last abutting part 220 away from the next abutting part 220, that is, abuts against the side of the tail abutting part 220 away from the adjacent abutting part 220. Since the rotation limiter 200 cannot continue to rotate counterclockwise relative to the first connector 100, the actuating part 310 is restricted by the last abutment part 220 and cannot continue to rotate clockwise, thereby preventing the second connector 300 from continuing to rotate clockwise relative to the first connector 100.
[0080] Therefore, the rotation angle of the second connector 300 relative to the first connector 100 is limited, and the rotation angle of the second connector 300 relative to the first connector 100 is greater than 360°, specifically greater than 720° and less than 1080°.
[0081] Please refer to it again. Figure 2 In some embodiments, the first limiting part 110 includes a first limiting groove 111, and the second limiting part 210 includes a first limiting protrusion 211. The first limiting protrusion 211 is slidably disposed in the first limiting groove 111 about the rotation axis of the rotating limiting member 200.
[0082] During the rotation of the rotation limiting member 200 relative to the first connecting member 100, the first limiting protrusion 211 rotates with the rotation limiting member 200 and slides within the first limiting groove 111.
[0083] When the actuating part 310 abuts against the supporting part 220 at the beginning, specifically against the side of the supporting part 220 away from the adjacent supporting part 220, the first limiting protrusion 211 is located at one end of the first limiting groove 111 and abuts against the inner wall of the first limiting groove 111, thereby preventing the rotation limiting member 200 from rotating forward relative to the first connecting member 100. When the actuating part 310 abuts against the supporting part 220 at the end, specifically against the side of the supporting part 220 away from the adjacent supporting part 220, the first limiting protrusion 211 is located at the other end of the first limiting groove 111 and abuts against the other inner wall of the first limiting groove 111, thereby preventing the rotation limiting member 200 from rotating in the opposite direction relative to the first connecting member 100.
[0084] For example, the first connector 100 is a motor stator, and its base plate has four protrusions 120 on its outer periphery for bolts to pass through, so as to fix the motor stator to other components by bolts. At this time, a first limiting groove 111 is formed between two of the protrusions 120.
[0085] Please see Figure 8 In other embodiments, the first limiting portion 110 includes a second limiting protrusion 112, and the second limiting portion 210 includes a second limiting groove 212. The second limiting protrusion 112 is slidably disposed within the second limiting groove 212 about the rotation axis of the rotating limiting member 200.
[0086] Similarly, during the rotation of the rotation limiter 200 relative to the first connector 100, the second limiting protrusion 112 rotates relative to the rotation limiter 200 and slides within the second limiting groove 212.
[0087] When the actuating part 310 abuts against the supporting part 220 at the beginning, specifically against the side of the supporting part 220 away from the adjacent supporting part 220, the second limiting protrusion 112 is located at one end of the second limiting groove 212 and abuts against the inner wall of the second limiting groove 212, thereby preventing the rotation limiting member 200 from rotating forward relative to the first connecting member 100. When the actuating part 310 abuts against the supporting part 220 at the end, specifically against the side of the supporting part 220 away from the adjacent supporting part 220, the second limiting protrusion 112 is located at the other end of the second limiting groove 212 and abuts against the other inner wall of the second limiting groove 212, thereby preventing the rotation limiting member 200 from rotating in the opposite direction relative to the first connecting member 100.
[0088] Please refer to the following: Figure 2 and Figure 8 Furthermore, in some embodiments, a damping element 400 is provided between the rotation limiting member 200 and the first connecting member 100.
[0089] In use, the damping member 400 can enhance the frictional resistance between the rotation limiting member 200 and the first connecting member 100, so that during the use of the product, the rotation limiting member 200 can only rotate relative to the first connecting member 100 under the actuation of the actuation part 310, and cannot deviate on its own, thereby avoiding affecting the fitting accuracy of the abutment part 220 and the actuation part 310 on the rotation limiting member 200.
[0090] For example, the damping element 400 can be a damping sheet made of materials such as silicone, or a damping layer formed of damping oil.
[0091] In this embodiment, a rotating shaft 130 is provided on the first connecting member 100, a damping member 400 is arranged around the rotating shaft 130, and a rotation limiting member 200 is arranged around the damping member 400.
[0092] In use, the rotation limiter 200 is rotatably connected to the first connector 100 through the damper 400 and the rotating shaft 130. The damper 400 can enhance the frictional resistance between the rotation limiter 200 and the rotating shaft 130.
[0093] In summary, in the aforementioned rotation limiting mechanism 10, since at least two abutment portions 220 are located on the rotation path of the actuating portion 310, the actuating portion 310 can contact the abutment portion 220 on the current rotation path. Therefore, for each revolution of the second connecting member 300 relative to the first connecting member 100, the actuating portion 310 can actuate one of the abutment portions 220, thereby causing the rotation limiting member 200 to rotate relative to the first connecting member 100. When the actuating portion 310 abuts against the side of the abutment portion 220 at the beginning or end that is away from the adjacent abutment portion 220, the first limiting portion 110 cooperates with the second limiting portion 210 to prevent the rotation limiting member 200 from rotating relative to the first connecting member 100, thereby preventing the actuating portion 310 from continuing to actuate the abutment portion 220 at the beginning or end, and thus preventing the second connecting member 300 from continuing to rotate relative to the first connecting member 100. During this process, since the rotation limiting member 200 has at least two abutment portions 220 arranged around its own rotation axis, the actuating portion 310 can actuate at least one abutment portion 220 without obstruction. That is, the second connecting member 300 can rotate at least one revolution relative to the first connecting member 100 without obstruction. Thus, the rotation angle of the second connecting member 300 relative to the first connecting member 100 is both limited and can exceed 360°. Connecting either the first connecting member 100 or the second connecting member 300 to the camera can meet the user's need for camera rotation exceeding 360° without avoiding cable tangling and damage. This approach is more practical, has lower manufacturing costs, and higher reliability.
[0094] Please see Figure 9 This application also provides a gimbal camera, including the rotation limiting mechanism 10 in any of the above embodiments.
[0095] This embodiment has the rotation limiting mechanism 10 of any of the above embodiments, and therefore has all the beneficial effects of the rotation limiting mechanism 10 of any of the above embodiments, which will not be described in detail here.
[0096] In some embodiments, the gimbal camera further includes a gimbal arm 20 and a camera (not shown in the figure). The second connector 300 is a motor rotor, and the second connector 300 is fixedly connected to the gimbal arm 20. The camera is directly or indirectly mounted on the gimbal arm 20.
[0097] In use, the second connector 300 drives the gimbal arm 20 to rotate, which in turn drives the camera to rotate, with a rotation angle exceeding 360°.
[0098] Understandably, the gimbal arm 20 and the connected motor can be the translation axis of the gimbal camera, the roll axis of the gimbal camera, or the pitch axis of the gimbal camera. This embodiment does not limit this.
[0099] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0100] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A rotation limiting mechanism, characterized by, The application relates to a rotation limiting mechanism. The first connecting piece is provided with a first limiting part; The rotation limiting piece is provided with a second limiting part and is rotationally connected with the first connecting piece, and at least two abutting parts are arranged on the rotation limiting piece in sequence along the rotation axis direction of the rotation limiting piece; The second connecting piece is provided with a pushing part and is rotationally connected with the first connecting piece; The at least two abutting parts are located on the rotation path of the pushing part, and the pushing part can contact the abutting part on the current rotation path; when the second connecting piece rotates one circle relative to the first connecting piece, the pushing part pushes the abutting part on the current rotation path; when the pushing part abuts against the side of the abutting part at the head or tail which is away from the side of the adjacent abutting part, the first limiting part cooperates with the second limiting part to prevent the rotation limiting piece from rotating relative to the first connecting piece. When the pushing part pushes the abutting part on the current rotation path, the rotation limiting piece rotates a preset angle in the direction opposite to the second connecting piece, so that the next abutting part rotates into the rotation path of the pushing part.
2. The rotational stop mechanism of claim 1, wherein, The number of the abutting parts is N, N is an integer and N>=2; 3. The rotational stop mechanism of claim 2, wherein, The rotation stroke of the rotation limiting piece is (N-1) times of the preset angle. The rotation axis of the rotation limiting piece is parallel to the rotation axis of the second connecting piece, the abutting parts are protruded along the radial direction of the rotation limiting piece, and the pushing part is protruded along the radial direction of the second connecting piece.
4. The rotational stop mechanism of claim 1, wherein, The first limiting part comprises a first limiting groove, the second limiting part comprises a first limiting protrusion, and the first limiting protrusion is arranged in the first limiting groove in the rotation axis direction of the rotation limiting piece.
5. The rotational stop mechanism of claim 1, wherein, The first limiting part comprises a second limiting protrusion, the second limiting part comprises a second limiting groove, and the second limiting protrusion is arranged in the second limiting groove in the rotation axis direction of the rotation limiting piece.
6. The rotational stop mechanism of claim 1, wherein, A damping piece is arranged between the rotation limiting piece and the first connecting piece.
7. The rotational stop mechanism of any one of claims 1 to 6, wherein, A rotating shaft is arranged on the first connecting piece, the damping piece is annularly arranged on the rotating shaft, and the rotation limiting piece is annularly arranged on the damping piece.
8. The rotational limit mechanism of claim 7, wherein, The first connecting piece comprises a motor stator, and the second connecting piece comprises a motor rotor; or 9. The rotational limit mechanism of any one of claims 1 to 6, wherein, The first connecting piece comprises a motor rotor, and the second connecting piece comprises a motor stator. The application relates to a rotation limiting mechanism.
10. A gimbal camera, comprising: The application relates to a rotation limiting mechanism.