Rotary connector with built-in flexible positioning

Abstract

This invention relates to the technical field of rotary connectors, and discloses a rotary connector with built-in elastic positioning, including a fixed cylinder and a rotating component. The rotating component has a rotating shaft, and a connecting plate is connected to the rotating shaft. The connecting plate has multiple positioning holes, and the fixed cylinder has a top end. The top end is provided with multiple positioners, each with a positioning bead. When the positioning bead is inserted into the positioning hole, the rotating component is in a positioning state; when the positioning bead is disengaged from the positioning hole, the rotating component is in a rotating state. An elastic structure is provided in the positioning hole. When the rotating component is in the positioning state, the positioning bead presses against the elastic structure and elastically deforms upward, so that the positioning bead is in an elastic equilibrium state, thereby achieving positioning of the rotating position. This rotary connector has a simple structure and can achieve internal elastic positioning without the need for additional external positioning structures. The positioning bead is elastically clamped by the elastic structure and the positioners to achieve an elastic equilibrium state, facilitating the switching of the rotating component between the positioning state and the rotating state.

Description

Technical Field

[0001] This invention relates to the technical field of rotary connectors, and more particularly, to rotary connectors with built-in elastic positioning. Background Technology

[0002] Rotary connectors are used to connect two objects that rotate relative to each other, allowing one object to rotate relative to the other. For example, a tabletop and a table frame: the rotary connector is attached to the table frame and integrated with it, while the tabletop is attached to the rotary connector, and the rotation of the connector allows the tabletop to rotate relative to the table frame.

[0003] During the rotation of a rotary connector, the rotation position needs to be positioned. In the existing technology, an external positioning structure is usually arranged between the two objects to position the rotating objects. This structure is complex and the operation is cumbersome. Summary of the Invention

[0004] The purpose of this invention is to provide a rotary connector with built-in elastic positioning, which aims to solve the problem that in the prior art, rotary connectors require additional external positioning structures.

[0005] The present invention is implemented as follows: a rotary connector with built-in elastic positioning includes a fixedly arranged fixed cylinder and a rotating component that rotates relative to the fixed cylinder. The rotating component has a rotating shaft, which is inserted into the fixed cylinder and rotatably connected to the fixed cylinder. A connecting plate is connected to the rotating shaft, and the connecting plate is exposed at the end of the fixed cylinder. The connecting plate has multiple positioning holes, which are arranged around the connecting plate at intervals in the circumference; the fixing cylinder has a top part facing the connecting plate, and the connecting plate and the top part are arranged at intervals facing each other to form a rotation interval. The top end is provided with multiple positioners, which are arranged around the circumference of the fixed cylinder at intervals; each positioner has a positioning bead that floats up and down elastically, and the multiple positioning beads are respectively arranged corresponding to multiple positioning holes, with the multiple positioning beads exposed in the rotation interval. When the multiple positioning beads are respectively embedded in the multiple positioning holes, the rotating member and the fixed cylinder are relatively elastically positioned, and the rotating member is in a positioning state; when the multiple positioning beads are respectively disengaged from the multiple positioning holes, the rotating member is in a rotating state. The positioning hole penetrates the connecting plate from top to bottom and passes through the bottom of the connecting plate to form a bottom opening. A horizontally arranged elastic structure is provided in the middle of the positioning hole. When the rotating part is in the positioning state, the positioning bead presses against the elastic structure and deforms upward. The elastic structure applies downward elastic pressure to the positioning bead so that the positioning bead is in an elastic equilibrium state.

[0006] Furthermore, the fixed cylinder has a cavity, and the rotating shaft passes through the cavity; the cavity has two bearings, which are arranged vertically at intervals along the axial direction of the cavity, and the rotating shaft passes through the two bearings respectively, so that the rotating shaft is rotatably connected to the fixed cylinder.

[0007] Furthermore, the two bearings include an upper bearing and a lower bearing, which are arranged vertically at intervals along the axial direction of the cylinder cavity; the inner wall of the cylinder cavity is provided with an upwardly arranged upper stepped ring, which is arranged around the circumference of the cylinder cavity; the inner wall of the cylinder cavity is provided with a downwardly arranged lower stepped ring, which is arranged around the circumference of the cylinder cavity. The bottom of the upper bearing abuts against the upper stepped ring, and the top of the upper bearing is pressed against an upper notched retaining ring to fix the upper bearing in the cylinder cavity; the top of the lower bearing abuts against the lower stepped ring, and the bottom of the lower bearing is pressed against a lower notched retaining ring to fix the lower bearing in the cylinder cavity.

[0008] Furthermore, the top of the rotating shaft extends into a top end portion, and the connecting plate is connected to the top of the rotating shaft; the bottom of the rotating shaft passes through a lower bearing, and a fixing structure is connected to the bottom of the rotating shaft. The fixed structure is integrated with the rotating shaft. The fixed structure presses against the lower bearing from bottom to top, restricting the rotating shaft from moving upward relative to the fixed cylinder. The connecting plate presses against multiple positioners from top to bottom, and the multiple positioners restrict the rotating shaft from moving downward relative to the fixed cylinder.

[0009] Furthermore, the fixing structure includes a fixing shaft and a spring plate. One end of the fixing shaft is inserted into the rotating shaft from the bottom of the rotating shaft and is threadedly connected to the rotating shaft. The other end of the fixing shaft has an outer end head, which is located below the rotating shaft. The spring plate is located below the rotating shaft, and the spring plate presses against the lower bearing from bottom to top; the other end of the fixed shaft passes through the spring plate downwards, and the outer end presses against the spring plate from bottom to top, so that the spring plate is connected to the rotating shaft as a whole, restricting the rotating shaft from moving upwards relative to the fixed cylinder.

[0010] Furthermore, the spring sheet has a central through hole in the middle and an outer periphery on its outer circumference. Along the direction from the outer periphery to the central through hole, the spring sheet protrudes downward in a curved shape, and the spring sheet surrounds and forms a hollow area with an open top. The other end of the fixed shaft passes through the central hole, and the outer periphery presses against the lower bearing from bottom to top. The bottom of the rotating shaft is arranged facing the hollow area so that the bottom of the rotating shaft is spaced apart from the spring plate.

[0011] Furthermore, the positioner includes a positioning cylinder with a positioning cavity. The bottom of the positioning cavity is closed, and the positioning cavity extends through the top of the positioning cylinder to form a top opening. A spring is provided in the positioning cavity, and the lower part of the positioning bead passes through the top opening and is placed in the positioning cavity. The lower part of the positioning bead abuts against the spring, and the upper part of the positioning bead is exposed above the positioning cylinder to form an exposed part. The top end is covered by a top plate, and the rotation interval is formed between the top plate and the connecting plate; the rotation shaft passes through the middle of the top plate; the top plate is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged around the rotation shaft at circumferential intervals. The outer periphery of the positioning cylinder is provided with a downwardly arranged mounting step. The lower part of the positioning cylinder passes through the mounting hole and extends into the cylinder cavity. The mounting step abuts against the top plate from top to bottom to fix the positioning cylinder to the top plate. The upper part and the exposed part of the positioning cylinder are respectively exposed above the top plate and exposed in the rotation interval. When the rotating component is in the positioning state, the exposed part is embedded in the positioning hole; the exposed part presses against the elastic structure from bottom to top, so that the elastic structure is elastically deformed upwards, and the elastic structure applies downward elastic pressure to the positioning bead; the spring is compressed and elastically deformed, and the spring applies upward elastic pressure to the positioning bead; the elastic structure and the spring elastically clamp the positioning bead from top to bottom, so that the positioning bead is in an elastic equilibrium state. When the exposed part disengages from the positioning hole, the elastic structure recovers its elasticity and returns to its natural state. The exposed part moves toward the positioning cavity, the spring is compressed and elastically deformed, and the upward elastic pressure increases.

[0012] Furthermore, the elastic structure includes a positioning ring, and an annular groove is provided in the middle of the positioning hole. The annular groove is arranged around the circumference of the positioning hole. The outer periphery of the annular groove has an outer peripheral wall, and the outer side of the positioning ring is covered with an outer elastic layer. The positioning ring is embedded in the annular groove. There is a top gap between the top of the positioning ring and the top of the annular groove, and a bottom gap between the bottom of the positioning ring and the bottom of the annular groove. The outer elastic layer abuts against the outer peripheral wall of the groove so that the positioning ring and the connecting plate are laterally elastically connected. The inner side of the positioning ring is connected to a plurality of elastic plates, the outer ends of the elastic plates are mated to the inner side of the positioning ring, the inner ends of the elastic plates extend toward the middle of the positioning ring, the middle of the positioning ring is provided with a central plate, the central plate is arranged to be arched upwards; along the direction from the inner end to the outer end of the elastic plate, the middle of the elastic plate is arranged to be arched upwards. When the rotating component is in the positioning state, the exposed part is embedded in the positioning hole and abuts against the middle piece from bottom to top. The multiple elastic pieces elastically deform upwards, the positioning ring elastically moves downwards, and the outer elastic layer is compressed and elastically deforms downwards.

[0013] Furthermore, the middle piece has a spherical positioning protrusion protruding downwards from the center, and the surface of the positioning bead has multiple spherical positioning recesses, which are distributed across the surface of the positioning bead and are spaced apart from each other; the middle piece has multiple hollow strips, which are arranged around the positioning protrusion at intervals in the circumference and extend radially along the middle piece. When the rotating component is in the positioning state, the positioning protrusion is actively embedded in the positioning recess, the middle piece is elastically deformed, and the positioning protrusion elastically positions the positioning bead; when the rotating component is in the rotation state, the positioning protrusion disengages from the positioning recess.

[0014] Furthermore, the spring surrounds to form an elastic cavity, the top of the positioning cavity is provided with an elastic bottom layer, the bottom layer is provided with a downwardly recessed positioning groove, the bottom of the spring is embedded in the positioning groove; the middle of the bottom layer is provided with an upwardly protruding elastic post, the elastic post is inserted into the elastic cavity; The elastic column has multiple peripheral grooves formed on its outer periphery, which are arranged around the circumference of the elastic column and spaced apart along the axial direction of the elastic column. An axial hole is provided in the middle of the elastic column, which extends from the top to the bottom of the elastic column. The peripheral grooves have multiple radial holes, which are arranged around the circumference of the elastic column and spaced apart. The inner end of each radial hole is connected to the axial hole, and the outer end of each radial hole is connected to the peripheral groove. When the rotating component is in the positioning state, the lower part of the positioning bead passes through the top opening and is embedded in the elastic cavity, the lower part of the positioning bead abuts against the elastic post, and the elastic post is in the natural state. When the rotating component is in a rotating state, the lower part of the positioning bead presses against the elastic column and undergoes longitudinal elastic deformation downwards, while the multiple outer peripheral grooves guide the elastic columns to undergo longitudinal compression elastic deformation; the positioning bead synchronously presses against the spring and undergoes longitudinal elastic deformation downwards, and the bottom layer is subjected to compression elastic deformation.

[0015] Compared with the prior art, the rotary connector with built-in elastic positioning provided by the present invention has a fixed cylinder and a rotating component respectively connected to two objects, which can realize the rotational arrangement of one object relative to another object; by arranging multiple positioners and multiple positioning holes, when the positioning bead of the positioner is embedded in the positioning hole during the rotation of the rotating component relative to the fixed cylinder, the rotation position can be positioned, and the rotation position of the rotating component can be accurately positioned. The structure is simple and can achieve internal elastic positioning without the need for additional external positioning structures, making operation simple. Secondly, the positioning bead floats elastically. When the rotating part is in the positioning state, the positioning bead is embedded in the positioning hole to achieve the positioning of the rotation position; when the rotating part is in the rotating state, the positioning bead is compressed and disengaged from the positioning hole. The operation is simple and the positioning bead can float elastically. In addition, the elastic structure arranged in the positioning hole allows the positioning pin to be embedded in the positioning hole and press against the elastic structure to undergo elastic deformation. The positioning bead is elastically clamped by the elastic structure and the positioner to achieve an elastic balance state. This allows the positioning bead to be elastically embedded in the positioning hole and facilitates the switching of the rotating part between the positioning state and the rotation state. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the rotary connector with built-in elastic positioning provided by the present invention; Figure 2 This is a three-dimensional schematic diagram of the rotary connector with built-in elastic positioning provided by the present invention; Figure 3 This is a three-dimensional exploded view of the rotary connector with built-in elastic positioning provided by the present invention; Figure 4 This is a cross-sectional schematic diagram of the rotary connector with built-in elastic positioning provided by the present invention; Figure 5 This is a three-dimensional exploded view of the rotating component and the two bearings provided by the present invention; Figure 6 This is a three-dimensional schematic diagram of the positioner provided by the present invention; Figure 7 This is an internal schematic diagram of the positioning bead and the elastic structure provided by the present invention. Figure 8 This is a schematic diagram of the internal structure of the locator provided by the present invention; Figure 9 This is a cross-sectional schematic diagram of the elastic column provided by the present invention; Figure 10 This is a partial structural diagram of the cooperation between the central piece and the positioning bead provided by the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0019] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0020] Reference Figure 1-10 The image shows a preferred embodiment of the present invention.

[0021] The built-in flexible positioning rotary connector includes a fixedly arranged fixed cylinder 100 and a rotating component that rotates relative to the fixed cylinder 100. The rotating component has a rotating shaft 202, which is inserted into the fixed cylinder 100 and rotatably connected to the fixed cylinder 100. A connecting plate 200 is connected to the rotating shaft 202 and is exposed at the end of the fixed cylinder 100. The connecting plate 200 has a plurality of positioning holes 201, which are arranged around the connecting plate 200 at intervals in the circumference; the fixing cylinder 100 has a top part facing the connecting plate 200, and the connecting plate 200 and the top part are arranged facing each other at intervals to form a rotation interval 203. The top part is provided with multiple positioners 500, which are arranged around the circumference of the fixed cylinder 100 at intervals. Each positioner 500 has a positioning bead 502 that floats up and down elastically. The multiple positioning beads 502 are respectively arranged corresponding to multiple positioning holes 201, and the multiple positioning beads 502 are exposed in the rotation interval 203. When the multiple positioning beads 502 are respectively embedded in the multiple positioning holes 201, the rotating part and the fixed cylinder 100 are relatively elastically positioned, and the rotating part is in a positioning state; when the multiple positioning beads 502 are respectively disengaged from the multiple positioning holes 201, the rotating part is in a rotating state. The positioning hole 201 penetrates the connecting plate 200 from top to bottom and passes through the bottom of the connecting plate 200 to form a bottom opening. The middle of the positioning hole 201 is provided with a horizontally arranged elastic structure. When the rotating part is in the positioning state, the positioning bead 502 presses against the elastic structure and deforms upward. The elastic structure applies downward elastic pressure to the positioning bead 502 so that the positioning bead 502 is in an elastic equilibrium state.

[0022] The aforementioned built-in elastic positioning rotary connector, with the fixed cylinder 100 and rotating component respectively connected to two objects, enables the rotational arrangement of one object relative to another. By arranging multiple positioners 500 and multiple positioning holes 201, during the rotation of the rotating component relative to the fixed cylinder 100, when the positioning bead 502 of the positioner 500 is embedded in the positioning hole 201, the rotational position can be positioned, achieving accurate positioning of the rotating component's rotational position. The structure is simple, and internal elastic positioning can be achieved without the need for additional external positioning structures, making operation simple. Secondly, the positioning bead 502 floats elastically. When the rotating part is in the positioning state, the positioning bead 502 is embedded in the positioning hole 201 to achieve the positioning of the rotation position; when the rotating part is in the rotating state, the positioning bead 502 is compressed and disengaged from the positioning hole 201. The operation is simple and the positioning bead 502 can float elastically. In addition, the elastic structure arranged in the positioning hole 201, when the positioning post is embedded in the positioning hole 201, presses against the elastic structure to undergo elastic deformation, and the positioning bead 502 is elastically clamped by the elastic structure and the positioner 500 to achieve an elastic balance state. This allows the positioning bead 502 to be elastically embedded in the positioning hole 201, and facilitates the switching of the rotating part between the positioning state and the rotation state.

[0023] As an extended embodiment, the fixed cylinder 100 is provided with a cylinder cavity 102, and the rotating shaft 202 passes through the cylinder cavity 102; the cylinder cavity 102 is provided with two bearings, which are arranged vertically at intervals along the axial direction of the cylinder cavity 102, and the rotating shaft 202 passes through the two bearings respectively, so that the rotating shaft 202 is rotatably connected to the fixed cylinder 100.

[0024] In this way, the two bearings can clamp the rotating shaft 202 from the top and bottom, so that the rotating shaft 202 can rotate and be placed in the cylinder cavity 102, and the rotation of the rotating shaft 202 is smoother and more fluid, which also makes the rotation between the rotating part and the fixed cylinder 100 smoother.

[0025] As an extended embodiment, the two bearings include an upper bearing 600 and a lower bearing 400, which are arranged vertically at intervals along the axial direction of the cylindrical cavity 102; the inner wall of the cylindrical cavity 102 is provided with an upwardly arranged upper stepped ring 602, which is arranged around the circumference of the cylindrical cavity 102; the inner wall of the cylindrical cavity 102 is provided with a downwardly arranged lower stepped ring 402, which is arranged around the circumference of the cylindrical cavity 102. The bottom of the upper bearing 600 abuts against the upper stepped ring 602, and the top of the upper bearing 600 is pressed against the upper notched retaining ring 601, so that the upper bearing 600 is fixed in the cylinder cavity 102; the top of the lower bearing 400 abuts against the lower stepped ring 402, and the bottom of the lower bearing 400 is pressed against the lower notched retaining ring 401, so that the lower bearing 400 is fixed in the cylinder cavity 102.

[0026] This allows the upper bearing 600 and the lower bearing 400 to be fixed in the cylinder cavity 102 respectively, and the rotating shaft 202 to pass through the upper bearing 600 and the lower bearing 400, while also enabling the rotating shaft 202 to cooperate with the upper bearing 600 and the lower bearing 400 in the cylinder cavity 102.

[0027] The upper notched retaining ring 601 and the lower notched retaining ring 401 can be elastically deformed in the circumferential direction. This makes it easy for the upper notched retaining ring 601 to be embedded in the upper stepped ring 602, so that the upper bearing 600 is fixed on the upper stepped ring 602, and makes it easy for the lower notched retaining ring 401 to be embedded in the lower stepped ring 402, so that the lower bearing 400 is fixed on the lower stepped ring 402.

[0028] As an extended embodiment, the top of the rotating shaft 202 extends into a top portion, and the connecting plate 200 is connected to the top of the rotating shaft 202; the bottom of the rotating shaft 202 passes through the lower bearing 400, and a fixing structure is connected to the bottom of the rotating shaft 202. The fixed structure is integrated with the rotating shaft 202. The fixed structure presses against the lower bearing 400 from bottom to top, restricting the rotating shaft 202 from moving upward relative to the fixed cylinder 100. The connecting plate 200 presses against multiple positioners 500 from top to bottom, restricting the rotating shaft 202 from moving downward relative to the fixed cylinder 100.

[0029] By arranging a fixed structure that is connected to the bottom of the rotating shaft 202 and presses against the lower bearing 400 from bottom to top, the bottom of the rotating shaft 202 and the lower bearing 400 are integrated into one unit, which can restrict the upward movement of the rotating shaft 202 relative to the fixed cylinder 100. At the same time, by using multiple positioners 500, the downward movement of the rotating shaft 202 relative to the fixed cylinder 100 is restricted. In this way, the longitudinal movement of the rotating shaft 202 is restricted, and the longitudinal restriction of the rotating shaft 202 is ensured during the rotation of the rotating shaft 202 relative to the fixed cylinder 100.

[0030] As an extended embodiment, the fixing structure includes a fixing shaft 300 and a spring plate 302. One end of the fixing shaft 300 is inserted into the rotating shaft 202 from the bottom of the rotating shaft 202 and is threadedly connected to the rotating shaft 202. The other end of the fixing shaft 300 has an outer end 301, which is located below the rotating shaft 202. The spring plate 302 is located below the rotating shaft 202, and the spring plate 302 presses against the lower bearing 400 from bottom to top; the other end of the fixed shaft 300 passes through the spring plate 302 downwards, and the outer end 301 presses against the spring plate 302 from bottom to top, so that the spring plate 302 is connected to the rotating shaft 202 as a whole, restricting the rotating shaft 202 from moving upwards relative to the fixed cylinder 100.

[0031] The outer end 301 presses against the spring sheet 302, thereby fixing the fixed shaft 300 and the lower bearing 400 in a relatively fixed manner, so as to restrict the longitudinal movement of the rotating shaft 202 and ensure that the rotating shaft 202 and the lower bearing 400 rotate synchronously.

[0032] As an extended embodiment, the spring sheet 302 has a central through hole 303 in the middle and an outer periphery 304 on the outer periphery of the spring sheet 302. Along the direction from the outer periphery 304 to the central through hole 303, the spring sheet 302 protrudes downward in a curved shape, and the spring sheet 302 surrounds and forms a hollow area with an open top. The other end of the fixed shaft 300 passes through the central through hole 303, and the outer periphery 304 presses against the lower bearing 400 from bottom to top. The bottom of the rotating shaft 202 is arranged facing the hollow area so that the bottom of the rotating shaft 202 is spaced apart from the spring plate 302.

[0033] In this way, the spring plate 302 can be arranged in an elastic shape. When it is pressed by the outer end 301, the spring plate 302 deforms elastically, so that it presses against the lower bearing 400 more firmly, thereby making the rotating shaft 202 and the lower bearing 400 integrated. Secondly, the elastic deformation arrangement of the spring plate 302 can make the outer periphery 304 and the lower bearing 400 form a full circumferential contact.

[0034] As an extended embodiment, the positioner 500 includes a positioning cylinder 501, which has a positioning cavity. The bottom of the positioning cavity is closed, and the positioning cavity extends through the top of the positioning cylinder 501 to form a top opening. A spring 503 is provided in the positioning cavity. The lower part of the positioning bead 502 passes through the top opening and is placed in the positioning cavity. The lower part of the positioning bead 502 abuts against the spring 503, and the upper part of the positioning bead 502 is exposed above the positioning cylinder 501 to form an exposed part. The top end is covered by a top plate 101, and a rotation interval 203 is formed between the top plate 101 and the connecting plate 200; the rotation shaft 202 passes through the middle of the top plate 101; the top plate 101 is provided with a plurality of mounting holes 103, which are arranged around the rotation shaft 202 at intervals in the circumference. The outer periphery of the positioning cylinder 501 is provided with a downwardly arranged mounting step 504. The lower part of the positioning cylinder 501 passes through the mounting hole 103 and extends into the cylinder cavity 102. The mounting step 504 abuts against the top plate 101 from top to bottom, so that the positioning cylinder 501 is fixed on the top plate 101. The upper part and the exposed part of the positioning cylinder 501 are respectively exposed above the top plate 101 and exposed in the rotation interval 203. When the rotating part is in the positioning state, the exposed part is embedded in the positioning hole 201; the exposed part presses against the elastic structure from bottom to top, so that the elastic structure is elastically deformed upwards, and the elastic structure applies downward elastic pressure to the positioning bead 502; the spring 503 is compressed and elastically deformed, and the spring 503 applies upward elastic pressure to the positioning bead 502; the elastic structure and the spring 503 elastically clamp the positioning bead 502 from top to bottom, so that the positioning bead 502 is in an elastic equilibrium state. When the exposed part disengages from the positioning hole 201, the elastic structure recovers its elasticity and returns to its natural state. The exposed part moves toward the positioning cavity, and the spring 503 is compressed and elastically deformed, increasing the upward elastic pressure.

[0035] By arranging mounting holes 103 and having mounting steps 504 on the outer periphery of the positioning cylinder 501, the positioning device 500 can be fixed on the top plate 101 by utilizing the cooperation between the mounting steps 504 and the top plate 101, thereby realizing the installation of the positioning device 500.

[0036] By using the spring 503 and the elastic structure to elastically clamp the positioning bead 502 from top to bottom, the positioning bead 502 can be in an elastic floating state, so that the positioning bead 502 can be inserted into the positioning hole 201 or detached from the positioning hole 201.

[0037] As an extended embodiment, the elastic structure includes a positioning ring 207, an annular groove is provided in the middle of the positioning hole 201, the annular groove is arranged around the circumference of the positioning hole 201; the outer periphery of the annular groove has an outer peripheral wall, the outer side of the positioning ring 207 is covered with an outer elastic layer 206, and the positioning ring 207 is embedded in the annular groove. There is a top gap 204 between the top of the positioning ring 207 and the top of the annular groove, and a bottom gap 205 between the bottom of the positioning ring 207 and the bottom of the annular groove. The outer elastic layer 206 abuts against the outer peripheral wall of the groove so that the positioning ring 207 is laterally elastically connected to the connecting plate 200. Multiple elastic pieces 208 are connected to the inner side of the positioning ring 207. The outer ends of the elastic pieces 208 are abutted to the inner side of the positioning ring 207. The inner ends of the elastic pieces 208 extend toward the middle of the positioning ring 207. A middle piece 209 is provided in the middle of the positioning ring 207. The middle piece 209 is arranged to be arched upwards. Along the direction from the inner end to the outer end of the elastic piece 208, the middle part of the elastic piece 208 is arranged to be arched upwards. When the rotating part is in the positioning state, the exposed part is embedded in the positioning hole 201 and abuts against the middle piece 209 from bottom to top. Multiple elastic pieces 208 elastically deform upwards, the positioning ring 207 elastically moves downwards, and the outer elastic layer 206 is squeezed and elastically deformed downwards.

[0038] An outer elastic layer 206 is arranged on the outer periphery of the positioning ring 207 to make the positioning ring 207 elastically connected to the outer peripheral wall of the groove. Furthermore, the top of the positioning ring 207 is provided with a top gap 204 and the bottom of the positioning ring 207 is provided with a bottom gap 205. When the multiple elastic pieces 208 are subjected to force and elastic deformation, the positioning ring 207 can be elastically adjusted in multiple directions, both laterally and longitudinally, so that the middle piece 209 can provide better elastic pressure on the positioning bead 502.

[0039] Secondly, the elastic sheet 208 is arranged with its center arched upwards. When the elastic sheet 208 is subjected to upward compressive force, that is, when it is subjected to the resistance force of the positioning bead 502, it can drive the positioning ring 207 to move downwards elastically, thereby achieving the function of elastic buffering, so as to achieve elastic resistance between the positioning bead 502 and the positioning ring 502.

[0040] As an extended embodiment, the middle piece 209 has a spherical positioning protrusion 212 protruding downward from the middle, and the surface of the positioning bead 502 has a plurality of spherical positioning recesses 512, which are distributed all over the surface of the positioning bead 502 and are spaced apart from each other; the middle piece 209 is provided with a plurality of hollow strips, which are arranged around the positioning protrusion 212 at intervals in the circumference and extend radially along the middle piece 209. When the rotating part is in the positioning state, the positioning protrusion 212 is actively embedded in the positioning recess 512, the middle piece 209 is elastically deformed, and the positioning protrusion 212 elastically positions the positioning bead 502; when the rotating part is in the rotating state, the positioning protrusion 212 disengages from the positioning recess 512.

[0041] In this way, by setting a positioning protrusion 212 in the middle piece 209, the positioning protrusion 212 can be elastically embedded in the positioning recess 512 to achieve elastic positioning of the positioning bead 502. When the rotating part is in the positioning state, the positioning bead 502 is embedded in the positioning hole 201 for positioning, and the positioning protrusion 212 is embedded in the positioning recess 512 for positioning at the same time, achieving the effect of double elastic positioning.

[0042] By arranging multiple hollow strips, the central piece 209 can be elastically deformed. This allows the positioning protrusion 212 to be elastically embedded in the positioning recess 512, and also allows the positioning protrusion 212 to be easily disengaged from the positioning recess 512, so as to realize the switching of the rotating part between the positioning state and the rotation state.

[0043] As an extended embodiment, the spring 503 surrounds and forms an elastic cavity. The top of the positioning cavity is provided with an elastic bottom layer 505. The bottom layer 505 is provided with a downwardly recessed positioning groove 507. The bottom of the spring 503 is embedded in the positioning groove 507. An elastic post 506 is provided in the middle of the bottom layer 505, protruding upward. The elastic post 506 passes through the elastic cavity. The elastic column 506 has multiple peripheral grooves 508 formed on its outer periphery. The peripheral grooves 508 are arranged around the elastic column 506 in the circumferential direction and are spaced apart along the axial direction of the elastic column 506. An axial hole 509 is provided in the middle of the elastic column 506. The axial hole 509 extends from the top of the elastic column 506 to the bottom of the elastic column 506. The peripheral grooves 508 have multiple radial holes 510. The radial holes 510 are arranged around the elastic column 506 in the circumferential direction and are spaced apart. The inner end of the radial hole 510 is connected to the axial hole 509 and the outer end of the radial hole 510 is connected to the peripheral groove 508. When the rotating part is in the positioning state, the lower part of the positioning bead 502 passes through the top opening and is embedded in the elastic cavity. The lower part of the positioning bead 502 abuts against the elastic post 506, and the elastic post 506 is in the natural state. When the rotating part is in a rotating state, the lower part of the positioning bead 502 presses against the elastic column 506 and deforms longitudinally downwards. Multiple outer peripheral grooves 508 guide the elastic column 506 to deform longitudinally in compression. The positioning bead 502 simultaneously presses against the spring 503 and deforms longitudinally downwards. The bottom layer 505 is deformed in compression.

[0044] A bottom layer 505 is arranged at the bottom of the positioning cavity, and the bottom of the spring 503 is embedded in the positioning groove 507. The bottom layer 505 is elastic. In this way, during the elastic deformation of the spring 503, the positioning groove 507 can be used to circumferentially position the bottom of the spring 503 to avoid the spring 503 from tilting during elastic deformation. During the elastic deformation of the spring 503, the bottom layer 505 undergoes elastic deformation simultaneously to achieve double elastic deformation, thereby achieving better elastic reset of the positioning bead 502.

[0045] Secondly, an elastic column 506 is arranged in the elastic cavity. When the positioning bead 502 is embedded in the positioning hole 201, the elastic column 506 is in a natural state. When the positioning bead 502 is dislodged from the positioning hole 201, the spring 503 is compressed. At the same time, the elastic column 506 is also compressed. The elastic column 506 can perform mid-positioning of the positioning bead 502 to ensure that the positioning bead 502 floats more smoothly in the longitudinal direction. In addition, the elastic column 506 is provided with an outer peripheral groove 508, a radial hole 510 and an axial hole 509 to ensure longitudinal elastic deformation of the elastic column 506 and to prevent the elastic column 506 from bending or deflecting.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotary connector with built-in elastic positioning, characterized in that, The device includes a fixed cylinder that is fixedly arranged and a rotating component that rotates relative to the fixed cylinder. The rotating component has a rotating shaft that is inserted into and rotatably connected to the fixed cylinder. A connecting plate is connected to the rotating shaft and is exposed at the end of the fixed cylinder. The connecting plate has multiple positioning holes, which are arranged around the connecting plate at intervals in the circumference; the fixing cylinder has a top part facing the connecting plate, and the connecting plate and the top part are arranged at intervals facing each other to form a rotation interval. The top end is provided with multiple positioners, which are arranged around the circumference of the fixed cylinder at intervals; each positioner has a positioning bead that floats up and down elastically, and the multiple positioning beads are respectively arranged corresponding to multiple positioning holes, with the multiple positioning beads exposed in the rotation interval. When the multiple positioning beads are respectively embedded in the multiple positioning holes, the rotating member and the fixed cylinder are relatively elastically positioned, and the rotating member is in a positioning state; when the multiple positioning beads are respectively disengaged from the multiple positioning holes, the rotating member is in a rotating state. The positioning hole penetrates the connecting plate from top to bottom and passes through the bottom of the connecting plate to form a bottom opening. A horizontally arranged elastic structure is provided in the middle of the positioning hole. When the rotating part is in the positioning state, the positioning bead presses against the elastic structure and deforms upward. The elastic structure applies downward elastic pressure to the positioning bead so that the positioning bead is in an elastic equilibrium state.

2. The rotary connector with built-in elastic positioning as described in claim 1, characterized in that, The fixed cylinder has a cavity, and the rotating shaft passes through the cavity. The cavity has two bearings, which are arranged vertically at intervals along the axial direction of the cavity. The rotating shaft passes through the two bearings respectively, so that the rotating shaft is rotatably connected to the fixed cylinder.

3. The rotary connector with built-in elastic positioning as described in claim 2, characterized in that, The two bearings include an upper bearing and a lower bearing, which are arranged vertically at intervals along the axial direction of the cylinder cavity; the inner wall of the cylinder cavity is provided with an upwardly arranged upper stepped ring, which is arranged around the circumference of the cylinder cavity; the inner wall of the cylinder cavity is provided with a downwardly arranged lower stepped ring, which is arranged around the circumference of the cylinder cavity. The bottom of the upper bearing abuts against the upper stepped ring, and the top of the upper bearing is pressed against an upper notched retaining ring to fix the upper bearing in the cylinder cavity; the top of the lower bearing abuts against the lower stepped ring, and the bottom of the lower bearing is pressed against a lower notched retaining ring to fix the lower bearing in the cylinder cavity.

4. The rotary connector with built-in elastic positioning as described in claim 3, characterized in that, The top of the rotating shaft extends into a top end portion, and the connecting plate is connected to the top of the rotating shaft; the bottom of the rotating shaft passes through a lower bearing, and a fixing structure is connected to the bottom of the rotating shaft. The fixed structure is integrated with the rotating shaft. The fixed structure presses against the lower bearing from bottom to top, restricting the rotating shaft from moving upward relative to the fixed cylinder. The connecting plate presses against multiple positioners from top to bottom, and the multiple positioners restrict the rotating shaft from moving downward relative to the fixed cylinder.

5. The rotary connector with built-in elastic positioning as described in claim 4, characterized in that, The fixing structure includes a fixing shaft and a spring plate. One end of the fixing shaft is inserted into the rotating shaft from the bottom of the rotating shaft and is threadedly connected to the rotating shaft. The other end of the fixing shaft has an outer end head, which is located below the rotating shaft. The spring plate is located below the rotating shaft, and the spring plate presses against the lower bearing from bottom to top; the other end of the fixed shaft passes through the spring plate downwards, and the outer end presses against the spring plate from bottom to top, so that the spring plate is connected to the rotating shaft as a whole, restricting the rotating shaft from moving upwards relative to the fixed cylinder.

6. The rotary connector with built-in elastic positioning as described in claim 5, characterized in that, The spring sheet has a central through hole in the middle and an outer periphery on its outer circumference. Along the direction from the outer periphery to the central through hole, the spring sheet protrudes downward in a curved shape, and the spring sheet surrounds and forms a hollow area with an open top. The other end of the fixed shaft passes through the central hole, and the outer periphery presses against the lower bearing from bottom to top. The bottom of the rotating shaft is arranged facing the hollow area so that the bottom of the rotating shaft is spaced apart from the spring plate.

7. The rotary connector with built-in elastic positioning as described in any one of claims 1 to 6, characterized in that, The positioner includes a positioning cylinder with a positioning cavity. The bottom of the positioning cavity is closed, and the positioning cavity extends through the top of the positioning cylinder to form a top opening. A spring is provided in the positioning cavity. The lower part of the positioning bead passes through the top opening and is placed in the positioning cavity. The lower part of the positioning bead abuts against the spring, and the upper part of the positioning bead is exposed above the positioning cylinder to form an exposed part. The top end is covered by a top plate, and the rotation interval is formed between the top plate and the connecting plate; the rotation shaft passes through the middle of the top plate; the top plate is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged around the rotation shaft at circumferential intervals. The outer periphery of the positioning cylinder is provided with a downwardly arranged mounting step. The lower part of the positioning cylinder passes through the mounting hole and extends into the cylinder cavity. The mounting step abuts against the top plate from top to bottom to fix the positioning cylinder to the top plate. The upper part and the exposed part of the positioning cylinder are respectively exposed above the top plate and exposed in the rotation interval. When the rotating component is in the positioning state, the exposed part is embedded in the positioning hole; the exposed part presses against the elastic structure from bottom to top, so that the elastic structure is elastically deformed upwards, and the elastic structure applies downward elastic pressure to the positioning bead; the spring is compressed and elastically deformed, and the spring applies upward elastic pressure to the positioning bead; the elastic structure and the spring elastically clamp the positioning bead from top to bottom, so that the positioning bead is in an elastic equilibrium state. When the exposed part disengages from the positioning hole, the elastic structure recovers its elasticity and returns to its natural state. The exposed part moves toward the positioning cavity, the spring is compressed and elastically deformed, and the upward elastic pressure increases.

8. The rotary connector with built-in elastic positioning as described in any one of claims 1 to 6, characterized in that, The elastic structure includes a positioning ring, and an annular groove is provided in the middle of the positioning hole. The annular groove is arranged around the circumference of the positioning hole. The outer periphery of the annular groove has an outer peripheral wall. The outer side of the positioning ring is covered with an outer elastic layer. The positioning ring is embedded in the annular groove. There is a top gap between the top of the positioning ring and the top of the annular groove, and a bottom gap between the bottom of the positioning ring and the bottom of the annular groove. The outer elastic layer abuts against the outer peripheral wall of the groove so that the positioning ring and the connecting plate are laterally elastically connected. The inner side of the positioning ring is connected to a plurality of elastic plates, the outer ends of the elastic plates are mated to the inner side of the positioning ring, the inner ends of the elastic plates extend toward the middle of the positioning ring, the middle of the positioning ring is provided with a central plate, the central plate is arranged to be arched upwards; along the direction from the inner end to the outer end of the elastic plate, the middle of the elastic plate is arranged to be arched upwards. When the rotating component is in the positioning state, the exposed part is embedded in the positioning hole and abuts against the middle piece from bottom to top. The multiple elastic pieces elastically deform upwards, the positioning ring elastically moves downwards, and the outer elastic layer is compressed and elastically deforms downwards.

9. The rotary connector with built-in elastic positioning as described in claim 8, characterized in that, The middle piece has a downward-protruding spherical positioning protrusion in the middle, and the surface of the positioning bead has a plurality of spherical positioning recesses, which are distributed all over the surface of the positioning bead and are spaced apart from each other; the middle piece has a plurality of hollow strips, which are arranged around the positioning protrusion at intervals in the circumference and extend radially along the middle piece. When the rotating component is in the positioning state, the positioning protrusion is actively embedded in the positioning recess, the middle piece is elastically deformed, and the positioning protrusion elastically positions the positioning bead; when the rotating component is in the rotation state, the positioning protrusion disengages from the positioning recess.

10. The rotary connector with built-in elastic positioning as described in claim 7, characterized in that, The spring surrounds to form an elastic cavity, and the top of the positioning cavity is provided with an elastic bottom layer. The bottom layer is provided with a downwardly recessed positioning groove, and the bottom of the spring is embedded in the positioning groove. An elastic post is provided with an upwardly protruding part in the middle of the bottom layer, and the elastic post passes through the elastic cavity. The elastic column has multiple peripheral grooves formed on its outer periphery, which are arranged around the circumference of the elastic column and spaced apart along the axial direction of the elastic column. An axial hole is provided in the middle of the elastic column, which extends from the top to the bottom of the elastic column. The peripheral grooves have multiple radial holes, which are arranged around the circumference of the elastic column and spaced apart. The inner end of each radial hole is connected to the axial hole, and the outer end of each radial hole is connected to the peripheral groove. When the rotating component is in the positioning state, the lower part of the positioning bead passes through the top opening and is embedded in the elastic cavity, the lower part of the positioning bead abuts against the elastic post, and the elastic post is in the natural state. When the rotating component is in a rotating state, the lower part of the positioning bead presses against the elastic column and undergoes longitudinal elastic deformation downwards, while the multiple outer peripheral groove guide elastic columns undergo longitudinal compression elastic deformation. The positioning bead synchronously compresses the spring, causing it to deform longitudinally downwards, and the bottom layer is compressed and deformed elastically.

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