Rotary motion structure

Abstract

The utility model discloses a rotary motion structure which comprises a mounting seat, a ball seat, a swing arm and a transmission piece, and the ball seat is connected with the mounting seat; a ball head is arranged at one end of the swing arm and is rotationally connected with the ball seat; the transmission part is in transmission connection with the swing arm so as to drive the swing arm to rotate. According to the rotary motion structure, the ball seat connected with the mounting seat is arranged, and the ball head of the swing arm is rotationally connected with the ball seat, so that the transmission piece can drive the swing arm to rotate on the spherical surface relative to the mounting seat. The swing arm is connected with the mounting seat through the ball head and the ball seat, so that the structure of the rotary motion structure can be simplified, the assembly precision between the swing arm and the mounting seat can be conveniently controlled, and the cost of the rotary motion structure is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of motion structures, in particular to a rotary motion structure. Background Art

[0002] With technological advancements, mechanical structures are becoming increasingly intelligent to adapt to changing demands under diverse production conditions. By optimizing mechanical structures, automated equipment can achieve higher efficiency and more stable quality control during production. A well-designed mechanical structure helps reduce the consumption of raw materials and other limited resources, which is crucial for lowering production costs and achieving sustainable development.

[0003] The rotary motion structure in the related art includes a mounting seat, a swing arm, a transmission member, and multiple ball bearings. A ball head is provided at one end of the swing arm, which is secured to the mounting seat via multiple ball bearings. The transmission member is in transmission connection with the swing arm. The swing arm is connected to an actuator to drive the actuator to rotate within a spherical surface. The use of multiple ball bearings to secure the ball head not only complicates the structure of the rotary motion structure but also places high demands on the assembly precision of the ball bearings, resulting in a high cost for the rotary motion structure. Utility Model Content

[0004] The utility model provides a rotary motion structure to reduce the cost of the rotary motion structure.

[0005] The rotary motion structure of the utility model includes a mounting seat, a ball seat, a swing arm and a transmission member, wherein the ball seat is connected to the mounting seat; a ball head is provided at one end of the swing arm, and the ball head is rotatably connected to the ball seat; the transmission member is in transmission connection with the swing arm to drive the swing arm to rotate.

[0006] Optionally, the transmission member includes a first transmission member and a second transmission member, the first transmission member is rotatably connected to the mounting seat around a first axis to drive the swing arm to rotate around a second axis, the second transmission member is rotatably connected to the mounting seat around the second axis to drive the swing arm to rotate around the first axis, and the second axis is perpendicular to the first axis.

[0007] Optionally, the first transmission member includes a first main body, the first main body is provided with a first movable groove, the first movable groove is a long strip groove extending along the extension direction of the first axis, the swing arm is inserted in the first movable groove, and the groove side wall of the first movable groove stops at the outer peripheral surface of the swing arm; the second transmission member includes a second main body, the second main body is arranged on one side of the first main body in the radial direction of the ball head, the second main body is provided with a second movable groove, the second movable groove is a long strip groove extending along the extension direction of the second axis, the swing arm is inserted in the second movable groove, and the groove side wall of the second movable groove stops at the outer peripheral surface of the swing arm.

[0008] Optionally, the surface of the first body facing the second body is a first arc surface, and the surface of the second body facing the first body is a second arc surface, and the centers of the first arc surface and the second arc surface both coincide with the center of the ball seat.

[0009] Optionally, the surface of the first body facing away from the second body is a third arc surface, and the center of the third arc surface coincides with the center of the ball seat; and / or the surface of the second body facing away from the first body is a fourth arc surface, and the center of the fourth arc surface coincides with the center of the ball seat.

[0010] Optionally, the first transmission member includes a first connecting portion, which is arranged on opposite sides of the first main body in the extension direction of the first axis, and the first connecting portion is rotatably connected to the mounting seat; and / or, the second transmission member includes a second connecting portion, which is arranged on opposite sides of the second main body in the extension direction of the second axis, and the second connecting portion is rotatably connected to the mounting seat.

[0011] Optionally, the rotary motion structure also includes a first gear and / or a second gear, the first transmission member is provided with a first meshing tooth, the first meshing tooth is engaged with the first gear to drive the first transmission member to rotate around the first axis; the second transmission member is provided with a second meshing tooth, the second meshing tooth is engaged with the second gear to drive the second transmission member to rotate around the second axis.

[0012] Optionally, the mounting seat has a mounting cavity, and at least a portion of the ball seat and at least a portion of the transmission member are both arranged in the mounting cavity.

[0013] Optionally, the mounting seat includes a mounting shell and a cantilever, the mounting shell encloses the mounting cavity, the fixed end of the cantilever is connected to the mounting shell, and the ball seat is connected to the cantilevered end of the cantilever.

[0014] Optionally, the ball seat includes a first seat body and a second seat body, the first seat body is provided with a first reference surface, the second seat body is provided with a second reference surface, the first seat body is connected to the mounting seat, the second seat body and the first seat body are detachably connected, the first reference surface and the second reference surface form an accommodating cavity, at least a part of the ball head is rotatably arranged in the accommodating cavity, the second seat body is provided with an opening passing through the second reference surface, and the swing arm passes through the opening.

[0015] The rotary motion structure of this utility model utilizes a ball seat connected to the mounting base, and the ball head of the swing arm is rotatably connected to the ball seat, so that the transmission member can drive the swing arm to rotate relative to the mounting base on the spherical surface. The connection between the swing arm and the mounting base via the ball head and the ball seat not only simplifies the structure of the rotary motion structure, but also facilitates control of the assembly precision between the swing arm and the mounting base, thereby reducing the cost of the rotary motion structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the rotary motion structure of an embodiment of the present utility model.

[0017] Figure 2 It is a three-dimensional diagram of the rotary motion structure of an embodiment of the present utility model from another perspective.

[0018] Figure 3 It is an exploded view of the rotary motion structure of an embodiment of the present utility model.

[0019] Figure 4 It is a three-dimensional diagram of the first transmission member of the rotary motion structure of an embodiment of the present utility model.

[0020] Figure 5 It is a three-dimensional diagram of the second transmission member of the rotary motion structure of an embodiment of the present utility model.

[0021] Figure 6 It is a three-dimensional diagram of the mounting base of the rotary motion structure according to an embodiment of the present utility model.

[0022] Figure 7 It is a top view of the rotary motion structure of an embodiment of the present utility model.

[0023] Figure 8 yes Figure 7 AA view.

[0024] Figure 9 yes Figure 7 BB direction view.

[0025] Reference numerals:

[0026] 100. Rotational motion structure;

[0027] 1. Mounting seat; 11. Mounting shell; 111. Mounting cavity; 12. Cantilever;

[0028] 2. Ball seat; 21. First seat body; 22. Second seat body; 221. Opening;

[0029] 3. Swing arm; 31. Ball head;

[0030] 4. Transmission member; 41. First transmission member; 411. First main body; 4111. First movable groove; 4112. First arc surface; 4113. Third arc surface; 412. First connecting portion; 4121. First meshing tooth; 4122. First connecting hole; 413. Avoidance; 42. Second transmission member; 421. Second main body; 4211. Second movable groove; 4212. Second arc surface; 4213. Fourth arc surface; 422. Second connecting portion; 4221. Second meshing tooth; 4222. Second connecting hole;

[0031] 5. First gear;

[0032] 6. Second gear. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figures 1 to 3 As shown, the rotary motion structure 100 of the present invention includes a mounting base 1, a ball seat 2, a swing arm 3, and a transmission member 4. The ball seat 2 is connected to the mounting base 1. A ball head 31 is provided at one end of the swing arm 3, which is rotatably connected to the ball seat 2. The transmission member 4 is in transmission connection with the swing arm 3 to drive the swing arm 3 to rotate.

[0035] The rotary motion structure 100 of the present embodiment is provided with a ball seat 2 connected to the mounting base 1, and the ball head 31 of the swing arm 3 is rotatably connected to the ball seat 2, so that the transmission member 4 can drive the swing arm 3 to rotate on the spherical surface relative to the mounting base 1. The connection between the swing arm 3 and the mounting base 1 via the ball head 31 and the ball seat 2 not only simplifies the structure of the rotary motion structure 100, but also facilitates the control of the assembly precision between the swing arm 3 and the mounting base 1, thereby reducing the cost of the rotary motion structure 100.

[0036] In some embodiments, as Figure 3As shown, the ball seat 2 includes a first seat body 21 and a second seat body 22. The first seat body 21 has a first reference surface, and the second seat body 22 has a second reference surface. The first seat body 21 is connected to the mounting base 1, and the second seat body 22 is detachably connected to the first seat body 21. The first and second reference surfaces define a receiving cavity, within which at least a portion of the ball head 31 is rotatably disposed. The second seat body 22 has an opening 221 extending through the second reference surface, through which the swing arm 3 passes.

[0037] Among them, at least a part of the ball head 31 is arranged in the accommodating cavity, which can be understood as: the ball head 31 is arranged in the accommodating cavity as a whole; or, a part of the ball head 31 is arranged in the accommodating cavity, and the other part of the ball head 31 extends out of the accommodating cavity through the opening 221.

[0038] For example, the first base body 21 and the second base body 22 are connected by fasteners, which may be bolts, screws, etc.

[0039] By setting the ball seat 2 to the above-mentioned structure, the swing arm 3 can be first passed through the opening 221, and then the first seat body 21 and the second seat body 22 are connected, so that the ball head 31 is located in the accommodating cavity surrounded by the first reference surface of the first seat body 21 and the second reference surface of the second seat body 22, thereby realizing the rotational connection between the ball head 31 and the ball seat 2.

[0040] This facilitates the rotational connection between the ball head 31 and the ball seat 2, which helps further reduce the cost of the rotary motion structure 100. In addition, by detachably connecting the first seat body 21 and the second seat body 22, the ball head 31 and the ball seat 2 can be disassembled, so that the swing arm 3 can be replaced.

[0041] Optionally, the first reference surface and the second reference surface may both be hemispherical surfaces, and the entire accommodating cavity has a spherical shape with an opening 221 .

[0042] Of course, in other embodiments, the first reference plane and the second reference plane may be arc-shaped surfaces other than hemispherical surfaces.

[0043] Optionally, there is a gap between the ball seat 2 and the ball head 31 to reduce friction between the ball seat 2 and the ball head 31 .

[0044] Optionally, the first base body 21 and the mounting base 1 are an integrated structure.

[0045] For example, the first seat body 21 and the mounting seat 1 are integrally cast.

[0046] By configuring the first base 21 and the mounting base 1 as an integrated structure, the structure of the rotary motion structure 100 can be further simplified, and the cost of the rotary motion structure 100 can be reduced.

[0047] In some embodiments, the transmission member 4 includes a first transmission member 41 and a second transmission member 42. The first transmission member 41 is rotatably connected to the mounting base 1 about a first axis to drive the swing arm 3 to swing about a second axis. The second transmission member 42 is rotatably connected to the mounting base 1 about a second axis to drive the swing arm 3 to rotate about the first axis. The second axis is perpendicular to the first axis.

[0048] Thus, during the rotation of the first transmission member 41 and the second transmission member 42, the swing arm 3 can be driven to rotate simultaneously about the first axis and the second axis, thereby driving the end of the swing arm 3 away from the ball head 31 to move within the spherical surface. The first transmission member 41 and the second transmission member 42 are configured as described above, which facilitates the movement of the end of the swing arm 3 away from the ball head 31 within the spherical surface.

[0049] In order to make the technical solution of the present invention easier to understand, the following takes the example that the extension direction of the first axis is consistent with the front-back direction and the extension direction of the second axis is consistent with the left-right direction to further describe the technical solution of the present invention. Figures 1 to 3 shown.

[0050] For example, the first transmission member 41 rotates around a first axis extending in the front-to-back direction to drive the swing arm 3 to rotate around the first axis extending in the front-to-back direction; the second transmission member 42 rotates around a second axis extending in the left-to-right direction to drive the swing arm 3 to rotate around the second axis extending in the left-to-right direction.

[0051] Alternatively, as Figures 2 to 4 As shown, the rotary motion structure 100 further includes a first gear 5 , and the first transmission member 41 is provided with a first meshing tooth 4121 , which meshes with the first gear 5 to drive the first transmission member 41 to rotate around the first axis.

[0052] For example, the axis of the first gear 5 is parallel to the first axis, and when the first gear 5 rotates, it drives the first transmission member 41 to rotate around the first axis.

[0053] By providing a first gear 5 that meshes with the first meshing teeth 4121 of the first transmission member 41, driving the first transmission member 41 to rotate about the first axis, the rotational accuracy and stability of the first transmission member 41 can be improved, thereby improving the rotational accuracy and stability of the swing arm 3. Furthermore, by controlling the first transmission member 41 to stop rotating when the first gear 5 stops rotating, the first transmission member 41 also stops rotating along with the first gear 5, causing the swing arm 3 to stop rotating, thereby controlling the end of the swing arm 3 away from the ball head 31 to remain at a predetermined position within the spherical surface.

[0054] Alternatively, as Figure 2 、 Figure 3 and Figure 5As shown, the rotary motion structure 100 further includes a second gear 6 , and the second transmission member 42 is provided with second meshing teeth 4221 , which mesh with the second gear 6 to drive the second transmission member 42 to rotate around the second axis.

[0055] For example, the axis of the second gear 6 is parallel to the second axis, and when the second gear 6 rotates, it drives the second transmission member 42 to rotate around the second axis.

[0056] By providing a second gear 6 that meshes with the second meshing teeth 4221 of the second transmission member 42, driving the second transmission member 42 to rotate about the second axis, the rotational accuracy and stability of the second transmission member 42 can be improved, thereby improving the rotational accuracy and stability of the swing arm 3. Furthermore, by controlling the second gear 6 to stop rotating, the second transmission member 42 also stops rotating along with the second gear 6, causing the swing arm 3 to stop rotating, thereby controlling the end of the swing arm 3 away from the ball head 31 to remain at a predetermined position within the spherical surface.

[0057] Optionally, the rotary motion structure 100 further includes a first motor and a second motor, wherein the first motor is used to drive the first gear 5 to rotate, and the second motor is used to drive the second gear 5 to rotate.

[0058] By controlling the rotation angle of the first motor and the rotation angle of the second motor, the rotation angle of the swing arm 3 around the first axis and the second axis can be controlled, so that the end of the swing arm 3 away from the ball head 31 can move to any specified position within the spherical surface and stay at any specified position within the spherical surface.

[0059] Alternatively, as Figure 4 As shown, the first transmission member 41 includes a first body 411 and a first connecting portion 412. The first connecting portion 412 is arranged on opposite sides of the first body 411 in the extension direction of the first axis. The swing arm 3 is transmission-connected to the first body 411, and the first connecting portion 412 is rotationally connected to the mounting base 1.

[0060] For example, Figure 4 As shown, the first connecting portion 412 is provided on the left and right sides of the first main body 411, so that both the left and right sides of the first transmission member 41 are rotatably connected to the mounting base 1. The first connecting portion 412 may be provided with a first connecting hole 4122, which is rotatably connected to the mounting base 1 via a rotating shaft.

[0061] By rotatably connecting the two opposite sides of the first transmission member 41 to the mounting base 1 , the connection reliability between the first transmission member 41 and the mounting base 1 can be improved, thereby improving the reliability of the rotary motion structure 100 .

[0062] Alternatively, as Figure 4 As shown, the first meshing teeth 4121 are provided on one of the first connecting portions 412 .

[0063] By arranging the first meshing teeth 4121 on one of the first connecting portions 412 , the structure of the first transmission member 41 can be further simplified, thereby further simplifying the structure of the rotary motion structure 100 and reducing the cost of the rotary motion structure 100 .

[0064] Alternatively, as Figure 5 As shown, the second transmission member 42 includes a second body 421 and a second connecting portion 422, which is arranged on opposite sides of the second body 421 in the extension direction of the second axis. The swing arm 3 is transmission-connected to the second body 421, and the second connecting portion 422 is rotationally connected to the mounting base 1.

[0065] For example, Figure 5 As shown, the second connecting portion 422 is provided on the front and rear sides of the second main body 421, so that the front and rear sides of the second transmission member 42 are both rotatably connected to the mounting base 1. The second connecting portion 422 may be provided with a second connecting hole 4222, and the second connecting hole 4222 is rotatably connected to the mounting base 1 via a rotating shaft.

[0066] By rotatably connecting the two opposite sides of the second transmission member 42 to the mounting base 1 , the connection reliability between the second transmission member 42 and the mounting base 1 can be improved, thereby improving the reliability of the rotary motion structure 100 .

[0067] Alternatively, as Figure 5 As shown, the second meshing teeth 4221 are provided on one of the second connecting portions 422 .

[0068] By arranging the second meshing teeth 4221 on one of the second connecting portions 422 , the structure of the second transmission member 42 can be further simplified, thereby further simplifying the structure of the rotary motion structure 100 and reducing the cost of the rotary motion structure 100 .

[0069] Alternatively, as Figure 3 and Figure 4 As shown, the first body 411 is provided with a first movable groove 4111, which is a long strip groove extending along the extension direction of the first axis, and the swing arm 3 is inserted into the first movable groove 4111. The groove sidewall of the first movable groove 4111 stops at the outer peripheral surface of the swing arm 3.

[0070] For example, Figure 4As shown, the first movable groove 4111 extends in the left-right direction, and its two sidewalls, parallel to the left-right direction, are configured to abut against the outer circumferential surface of the swing arm 3. This allows the first transmission member 41 to rotate about a first axis extending in the left-right direction by abutting against the outer circumferential surface of the swing arm 3 with the sidewalls of the first movable groove 4111, thereby driving the swing arm 3 to rotate about the first axis extending in the left-right direction. Furthermore, when the second transmission member 42 drives the swing arm 3 to rotate about the second axis, the end of the swing arm 3 away from the ball head 31 can move in the left-right direction within the first movable groove 4111.

[0071] The first movable groove 4111 provided on the first transmission member 41 facilitates the first transmission member 41 to drive the swing arm 3 to rotate about the first axis, and also allows the swing arm 3 to avoid rotation about the second axis. This simplifies the structure of the first transmission member 41 and further reduces the cost of the rotary motion structure 100.

[0072] Alternatively, as Figure 3 and Figure 5 As shown, the first body 411 is disposed on one side of the second body 421 in the radial direction of the ball head 31. The second transmission member 42 is provided with a second movable groove 4211. The second movable groove 4211 is an elongated groove extending along the extension direction of the second axis. The swing arm 3 is inserted into the second movable groove 4211. The sidewalls of the second movable groove 4211 abut against the outer peripheral surface of the swing arm 3.

[0073] For example, Figure 3 、 Figure 8 and Figure 9 As shown, the first body 411 is disposed on the upper side of the second body 421. Figure 5 As shown, the second movable groove 4211 extends in the front-to-back direction, and its two sidewalls, which are parallel to the front-to-back direction, are configured to abut against the outer peripheral surface of the swing arm 3. This allows the second transmission member 42 to rotate about a second axis extending in the front-to-back direction by abutting against the outer peripheral surface of the swing arm 3 with the sidewalls of the second movable groove 4211, thereby driving the swing arm 3 to rotate about the second axis extending in the front-to-back direction. Furthermore, when the second transmission member 42 drives the swing arm 3 to rotate about the second axis, the end of the swing arm 3 away from the ball head 31 can move in the front-to-back direction within the second movable groove 4211.

[0074] Providing the second moving groove 4211 on the second transmission member 42 not only facilitates the second transmission member 42 to drive the swing arm 3 to rotate about the second axis, but also allows the swing arm 3 to avoid the swing arm 3 when rotating about the second axis. This helps simplify the structure of the second transmission member 42 and further reduces the cost of the rotary motion structure 100.

[0075] Alternatively, as Figure 4 and Figure 5As shown, the surface of the first body 411 facing the second body 421 is a first arc surface 4112, and the surface of the second body 421 facing the first body 411 is a second arc surface 4212. The centers of the first arc surface 4112 and the second arc surface 4212 both coincide with the center of the ball seat 2.

[0076] By setting the surface of the first body 411 facing the second transmission member 42 and the surface of the second body 421 facing the first transmission member 41 as arc surfaces, the compactness of the layout of the first body 411 and the second body 421 can be improved, thereby reducing the volume of the rotary motion structure 100 and further reducing the cost of the rotary motion structure 100.

[0077] Alternatively, as Figure 4 As shown, the surface of the first body 411 facing away from the second body 421 is a third arc surface 4113 , and the center of the third arc surface 4113 coincides with the center of the ball seat 2 .

[0078] By setting the surface of the first body 411 facing away from the second transmission member 42 as an arc surface, the volume of the rotary motion structure 100 can be further reduced, and the cost of the rotary motion structure 100 can be further reduced.

[0079] Alternatively, as Figure 5 As shown, the surface of the second body 421 facing away from the first body 411 is a fourth arc surface 4213 , and the center of the fourth arc surface 4213 coincides with the center of the ball seat 2 .

[0080] By setting the surface of the second body 421 facing away from the first transmission member 41 to be a spherical surface, the volume of the rotary motion structure 100 can be further reduced, and the cost of the rotary motion structure 100 can be further reduced.

[0081] Alternatively, as Figures 7 to 9 As shown, the first body 411 is sleeved on the outside of the second body 421. Figure 4 As shown, the first body 411 is provided with an escape opening 413 for escaping the second connection portion 422 .

[0082] By providing the avoidance opening 413 on the first body 411 , the layout between the first body 411 and the second body 421 becomes more compact, which is beneficial to further reduce the volume of the rotary motion structure 100 and further reduce the cost of the rotary motion structure 100 .

[0083] Alternatively, as Figure 2 and Figure 6 As shown, the mounting seat 1 has a mounting cavity 111 , and at least a portion of the ball seat 2 and at least a portion of the transmission member 4 are both arranged in the mounting cavity 111 .

[0084] Among them, at least a portion of the ball seat 2 is disposed within the mounting cavity 111, which can be understood as: the ball seat 2 is entirely disposed within the mounting cavity 111; or, a portion of the ball seat 2 is disposed within the mounting cavity 111, and the other portion of the ball seat 2 is disposed outside the mounting cavity 111. At least a portion of the transmission member 4 is disposed within the mounting cavity 111, which can be understood as: the transmission member 4 is entirely disposed within the mounting cavity 111; or, a portion of the transmission member 4 is disposed within the mounting cavity 111, and the other portion of the transmission member 4 is disposed outside the mounting cavity 111.

[0085] For example, the first connection portion 412 and the second connection portion 422 are both disposed in the installation cavity 111. A portion of the first body 411 and a portion of the second body 421 are disposed in the installation cavity 111, and another portion of the first body 411 and another portion of the second body 421 are disposed outside the installation cavity 111.

[0086] By arranging at least a portion of the ball seat 2 and at least a portion of the transmission member 4 in the installation cavity 111 , the installation cavity 111 can be used to protect the ball seat 2 and the transmission member 4 , thereby further improving the reliability of the rotary motion structure 100 .

[0087] Alternatively, as Figure 6 As shown, the mounting seat 1 includes a mounting shell 11 and a cantilever 12 . The mounting shell 11 forms a mounting cavity 111 . The fixed end of the cantilever 12 is connected to the mounting shell 11 , and the ball seat 2 is connected to the cantilevered end of the cantilever 12 .

[0088] For example, the mounting shell 11 is a mounting tube, the fixed end of the cantilever 12 is connected to the tube wall of the mounting tube, and the cantilevered end of the cantilever 12 is cantilevered toward the center of the mounting tube, so that when the cantilevered end is located at the center position of the mounting tube, the ball seat 2 is fixed at the center position of the mounting tube.

[0089] By configuring mounting base 1 with the aforementioned structure, mounting base 1 maintains a simple structure while facilitating connection of ball seat 2 thereto. Furthermore, utilizing cantilever arm 12 to secure ball seat 2 facilitates adjusting the position of ball seat 2 within mounting cavity 111 as desired, thereby increasing the swing angle of swing arm 3. This allows the end of swing arm 3 away from ball head 31 to move within a wider spherical angle range, thereby expanding the application range of rotary motion structure 100. For example, the end of swing arm 3 away from ball head 31 can move within a spherical surface with a spherical angle of 120°.

[0090] The rotary motion structure 100 of the embodiment of the present invention can move the end of the swing arm 3 away from the ball head 31 to any position on the spherical surface. The rotary motion structure 100 can be used for equipment that needs to move within a spherical surface, such as radar.

[0091] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0093] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0094] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0095] In the present invention, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0096] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in this field are all within the scope of protection of the present invention.

Claims

1. A rotary motion structure, characterized in that: include: Mounting seat; a ball seat connected to the mounting seat; A swing arm, one end of which is provided with a ball head, the ball head being rotatably connected to the ball seat; A transmission member is connected to the swing arm to drive the swing arm to rotate.

2. The rotary motion structure according to claim 1, characterized in that: The transmission member includes a first transmission member and a second transmission member. The first transmission member is rotatably connected to the mounting base around a first axis to drive the swing arm to rotate around a second axis. The second transmission member is rotatably connected to the mounting base around the second axis to drive the swing arm to rotate around the first axis. The second axis is perpendicular to the first axis.

3. The rotary motion structure according to claim 2, characterized in that: The first transmission member includes a first main body, the first main body is provided with a first movable groove, the first movable groove is an elongated groove extending along the extension direction of the first axis, the swing arm is inserted into the first movable groove, and the groove sidewall of the first movable groove abuts against the outer peripheral surface of the swing arm; The second transmission member includes a second main body, which is arranged on one side of the first main body in the radial direction of the ball head. The second main body is provided with a second movable groove, which is a long strip groove extending along the extension direction of the second axis. The swing arm is inserted into the second movable groove, and the groove side wall of the second movable groove stops at the outer peripheral surface of the swing arm.

4. The rotary motion structure according to claim 3, characterized in that: The surface of the first body facing the second body is a first arc surface, and the surface of the second body facing the first body is a second arc surface. The centers of the first arc surface and the second arc surface both coincide with the center of the ball seat.

5. The rotary motion structure according to claim 4, characterized in that: The surface of the first body facing away from the second body is a third arc surface, and the center of the third arc surface coincides with the center of the ball seat; and / or The surface of the second body facing away from the first body is a fourth arc surface, and the center of the fourth arc surface coincides with the center of the ball seat.

6. The rotary motion structure according to claim 4, characterized in that: The first transmission member includes a first connecting portion, the first connecting portion is arranged on opposite sides of the first main body in the extension direction of the first axis, and the first connecting portion is rotatably connected to the mounting seat; and / or The second transmission member includes a second connecting portion, which is arranged on two opposite sides of the second main body in the extending direction of the second axis, and the second connecting portion is rotatably connected to the mounting seat.

7. The rotary motion structure according to any one of claims 2 to 6, characterized in that: Also includes: a first gear, wherein the first transmission member is provided with first meshing teeth, and the first meshing teeth are engaged with the first gear to drive the first transmission member to rotate around the first axis; and / or The second gear, the second transmission member is provided with second meshing teeth, and the second meshing teeth are engaged with the second gear to drive the second transmission member to rotate around the second axis.

8. The rotary motion structure according to any one of claims 1 to 6, characterized in that: The mounting seat has a mounting cavity, and at least a portion of the ball seat and at least a portion of the transmission member are both arranged in the mounting cavity.

9. The rotary motion structure according to claim 8, characterized in that: The mounting seat includes a mounting shell and a cantilever, wherein the mounting shell encloses the mounting cavity, the fixed end of the cantilever is connected to the mounting shell, and the ball seat is connected to the cantilevered end of the cantilever.

10. The rotary motion structure according to any one of claims 1 to 6, characterized in that: The ball seat includes a first seat body and a second seat body, the first seat body is provided with a first reference surface, the second seat body is provided with a second reference surface, the first seat body is connected to the mounting seat, the second seat body and the first seat body are detachably connected, the first reference surface and the second reference surface form an accommodating cavity, at least a part of the ball head is rotatably arranged in the accommodating cavity, the second seat body is provided with an opening passing through the second reference surface, and the swing arm passes through the opening.

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