Rotating connection device and lighting device

Abstract

The present application relates to a rotating connection device and a lighting device, and relates to the field of lighting fixtures. The rotating connection device includes a sleeve, a first rotating member, a second rotating member and an adjustment assembly. The sleeve is provided with a center hole connecting the first end and the second end, the first rotating member is rotatably arranged at the first end, and the second rotating member is rotatably arranged at the second end. The adjustment assembly is arranged in the center hole and is located between the first rotating member and the second rotating member. The adjustment assembly includes a first elastic member, a second elastic member and a positioning member, the positioning member is arranged between the first elastic member and the second elastic member, the first elastic member elastically abuts between the first rotating member and the positioning member, so that the first rotating member abuts against the sleeve. The second elastic member elastically abuts between the second adjusting member and the positioning member, so that the second rotating member abuts against the sleeve. The above-mentioned lighting device can respectively control the friction resistance of the first rotating member and the second rotating member relative to the sleeve, thereby improving the flexibility of the rotation damping adjustment of the rotating connection device.

Description

Technical Field

[0001] The present application relates to the technical field of lighting fixtures, and in particular to a rotating connection device and a lighting device. Background Art

[0002] There are many types of lighting devices, including floor lamps, downlights, and spotlights. Regardless of the type, adjustable illumination is often required to better suit different application scenarios. Existing adjustable lighting devices typically include a lamp body and a rotation adjustment assembly. One end of the rotation adjustment assembly is typically rotatably connected to the lamp body, while the other end is mounted on a support. The rotation adjustment assembly is often tightened with a rubber ring to ensure rotational damping, but this rotational damping is fixed and cannot be adjusted. Summary of the Invention

[0003] In view of this, the present application provides a rotating connection device and a lighting device to solve the above technical problems.

[0004] According to the first aspect of the present application, an embodiment of the present application provides a rotational connection device, which includes a sleeve, a first rotating member, a second rotating member, and an adjustment assembly. The sleeve has a first end and a second end that are opposite to each other, and the sleeve is provided with a center hole connecting the first end and the second end. The first rotating member is rotatably arranged at the first end, and the second rotating member is rotatably arranged at the second end. The adjustment assembly is arranged in the center hole and is located between the first rotating member and the second rotating member. The adjustment assembly includes a first elastic member, a second elastic member, and a positioning member, and the positioning member is arranged between the first elastic member and the second elastic member. The first elastic member elastically abuts between the first rotating member and the positioning member, so that the first rotating member abuts against the sleeve. The second elastic member elastically abuts between the second adjusting member and the positioning member, so that the second rotating member abuts against the sleeve.

[0005] According to a second aspect of the present application, an embodiment of the present application provides a lighting device, which includes the above-mentioned rotating connection device and a light-emitting module, and the light-emitting module is connected to the rotating connection device.

[0006] Compared to the prior art, the present application provides a rotational connection device comprising a first rotating member, a second rotating member, and an adjustment assembly. The adjustment assembly includes a first elastic member, a second elastic member, and a positioning member. The first elastic member abuts between the positioning member and the first rotating member, while the second elastic member abuts between the positioning member and the second rotating member. The positioning member separates the first and second elastic members, allowing them to deform independently of each other. This means that the elastic force generated by the deformation of the first elastic member is not transmitted to the second elastic member via the positioning member. This reduces mutual interference between the first and second rotating members, allowing for independent regulation of the first and second rotating members, thereby improving the adjustment flexibility and stability of the first and second rotating members. Furthermore, the independent deformation allows for different rotational damping between the first rotating member and the sleeve, and between the second rotating member and the sleeve, to accommodate different usage environments and connection requirements, further improving the adjustment flexibility of the first and second rotating members. Furthermore, the provision of the first and second elastic members prevents overall performance degradation caused by fatigue or failure of individual elastic members, thereby increasing the service life of the rotational connection device. At the same time, the first elastic member and the second elastic member can also provide double cushioning, effectively reducing wear and noise caused by vibration or impact, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0008] Figure 1 It is a structural schematic diagram of a rotary connection device provided in one embodiment of the present application.

[0009] Figure 2 yes Figure 1 The structural diagram of the lighting device shown.

[0010] Figure 3 yes Figure 1 The longitudinal cross-sectional structural diagram of the rotating connection device shown is shown.

[0011] Figure 4 yes Figure 3 A partial enlarged schematic diagram of area A of the rotating connection device shown.

[0012] Figure 5 yes Figure 1 Another longitudinal cross-sectional structural schematic diagram of the rotary connection device shown.

[0013] Figure 6 yes Figure 1 Another longitudinal cross-sectional structural schematic diagram of the rotary connection device shown.

[0014] Figure 7 yes Figure 5 A partially enlarged schematic diagram of the rotating connection device shown.

[0015] Figure 8 yes Figure 5 A partial enlarged schematic diagram of area B of the rotating connection device shown. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0017] It should be noted that when an element / component is referred to as being "fixed to" another element / component, it may be directly on the other element / component or there may be an intervening element / component. When an element / component is considered to be "connected" to another element / component, it may be directly connected to the other element / component or there may be an intervening element / component. At the same time, when an element / component is considered to be "connected" to another element / component, it may be integrally molded or assembled with the other element / component. When an element / component is considered to be "disposed on" another element / component, it may be directly disposed on the other element / component or there may be an intervening element / component.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0019] See also Figure 1, an embodiment of the present application provides a rotating connection device 100, which includes a sleeve 10, a first rotating member 20, a second rotating member 40 and an adjustment assembly 30. The rotating connection device 100 is a rotating connection member, which is used to rotatably fix the device on the support platform to achieve changes in different angles or directions of the device. This embodiment does not impose specific restrictions on the device and the corresponding support platform, and can be set according to actual use requirements. As an example, the device can be a lamp body, the support platform can be a lamp pole or lamp holder 212, and the rotating connection device 100 is connected between the lamp body and the lamp pole or lamp holder 212 to achieve rotation of the lamp body in multiple directions or multiple angles. As another example, the device can also be a camera, the corresponding support platform can be a camera bracket, and the rotating connection member is connected between the camera and the camera bracket to achieve rotation of the camera in different directions or different angles. For ease of explanation, in this embodiment, the rotating connection device 100 is configured as an accessory of the lighting device 200.

[0020] Specifically, see Figure 1 and Figure 2 , the embodiment of the present application also provides a lighting device 200, which is used to provide lighting light or decorative light. This embodiment does not limit the specific type of the lighting device 200, for example, it can be a spotlight, a downlight, a floor lamp, etc. In this embodiment, the lighting device 200 includes the above-mentioned rotating connection device 100 and the light-emitting module 210. The rotating connection device 100 can be connected to the light-emitting module 210 via the second rotating member 40, so that the light-emitting angle and light-emitting direction of the light-emitting module 210 can be adjusted, thereby improving the light-emitting range of the lighting device 200. The first rotating member 20 of the rotating connection device 100 can be used to connect to the base 220, and the base 220 is used to be placed on a supporting platform to enhance the stability of the lighting device 200. The supporting platform can be a wall, a ground, a desktop, etc., and can be placed according to actual usage requirements.

[0021] The light-emitting module 210 may include a light source 211 and a lamp holder 212. The lamp holder 212 is detachably connected to the rotating connection device 100. When the rotating connection device 100 rotates, the light-emitting module 210 also rotates. This embodiment does not limit the connection method between the lamp holder 212 and the rotating connection device 100. For example, it can be a plug-in connection, a snap connection, a magnetic connection, etc. As a specific example, when the light-emitting module 210 is in operation, the lamp holder 212 has a connection groove on the side facing the rotating connection device 100. One end of the first rotating member 20 is penetrated by the connection groove and is securely connected to the lamp holder 212.

[0022] The light-emitting module 210 also includes a circuit board (not shown). The circuit board is disposed within the lamp holder 212 and electrically connected to the light source 211 to provide power to the light source 211. Specifically, the light source 211 is used to generate an output light beam. Multiple light sources 211 may be arranged sequentially on the circuit board to increase the brightness of the output light. This embodiment does not limit the specific type of light source 211. For example, the light source 211 may be an LED light source 211, a halogen lamp, an incandescent lamp, a fluorescent lamp, or the like. The colors of the multiple light sources 211 may be the same or different, depending on actual needs. As an example, the light source 211 may be an LED light source. This improves the efficiency of converting electrical energy into light energy, thereby reducing energy waste. LED light sources also generate less heat during illumination, thus contributing to energy conservation and environmental protection. Furthermore, LED light sources have a long service life, reducing the frequency of light source 211 replacement and thus reducing the operating cost of the lighting device 200.

[0023] See also Figure 1 and Figure 3 In this embodiment, the sleeve 10 of the rotary connection device 100 has a first end 101 and a second end 102 that are spaced apart from each other. The sleeve 10 defines a central hole 103 that connects the first end 101 and the second end 102. The first rotating member 20 is rotatably disposed at the first end 101, and the second rotating member 40 is rotatably disposed at the second end 102. The adjustment assembly 30 is disposed within the central hole 103 and is located between the first rotating member 20 and the second rotating member 40. The adjustment assembly 30 includes a first elastic member 31, a second elastic member 32, and a positioning member 33. The positioning member 33 is disposed between the first elastic member 31 and the second elastic member 32. The first elastic member 31 elastically abuts between the first rotating member 20 and the positioning member 33, thereby holding the first rotating member 20 against the sleeve 10. The second elastic member 32 elastically abuts between the second rotating member 40 and the positioning member 33, thereby holding the second rotating member 40 against the sleeve 10. It should be noted that the "abutment" between two elements in this specification can be understood as direct contact and abutment between the two elements, or can be understood as indirect contact and abutment between the two elements, for example, there is an intermediate element between the two elements and the abutment is achieved through the intermediate element.

[0024] By holding the first elastic member 31 between the positioning member 33 and the first rotating member 20, and the second elastic member 32 between the positioning member 33 and the second rotating member 40, the positioning member 33 can separate the first elastic member 31 and the second elastic member 32, thereby allowing the first elastic member 31 and the second elastic member 32 to deform independently of each other. In other words, the elastic force generated by the deformation of the first elastic member 31 is not transmitted to the second elastic member 32 via the positioning member 33. This can reduce mutual interference between the first rotating member 20 and the second rotating member 40, thereby achieving independent regulation of the first rotating member 20 and the second rotating member 40, thereby improving the adjustment flexibility and stability of the first rotating member 20 and the second rotating member 40. Furthermore, the independent deformation allows different rotational damping to be generated between the first rotating member 20 and the sleeve 10, and between the second rotating member 40 and the sleeve 10, to adapt to different usage environments and connection requirements, further improving the adjustment flexibility of the first rotating member 20 and the second rotating member 40. Furthermore, the arrangement of the first elastic member 31 and the second elastic member 32 can prevent overall performance degradation caused by fatigue or failure of a single elastic member, thereby increasing the service life of the rotary connection device 100. Furthermore, the first elastic member 31 and the second elastic member 32 can provide dual cushioning, effectively reducing wear and noise caused by vibration or impact, thereby improving the user experience.

[0025] Next, each component of the rotary connection device 100 and the specific structure of each component will be introduced one by one.

[0026] See also Figure 1 and Figure 3 The rotating connection device 100 includes a sleeve 10, a first rotating member 20, a second rotating member 40, and an adjustment assembly 30. During installation, the second rotating member 40 is first inserted from the first end 101 of the sleeve 10 into the center hole 103 and clamped to the second end 102, so that at least a portion of the second rotating member 40 protrudes from the second end 102 outside the center hole 103 to connect to the light-emitting module 210. The adjustment assembly 30 is then inserted from the first end 101 into the center hole 103. Finally, the first rotating member 20 is inserted into the center hole 103 and clamped to the first end 101, so that at least a portion of the first rotating member 20 protrudes from the first end 101 outside the center hole 103 to connect to a support platform, such as a lamp pole or bracket.

[0027] In this embodiment, the sleeve 10 serves as a mounting carrier for mounting and effectively protecting mounting components. The mounting components may include the aforementioned first rotating member 20, second rotating member 40, and adjustment assembly 30, and are movably disposed within the sleeve 10. The sleeve 10 also functions to contact the mounting device to generate friction, allowing the mounting component to move relative to the sleeve 10 to a desired predetermined angle or position and then remain stationary. Specifically, the sleeve 10 is generally cylindrical and has a central hole 103, which forms a receiving cavity for mounting the mounting components. The central hole 103 is also used to thread wires. The sleeve 10 has a first end 101 and a second end 102, which are spaced apart from each other. The central hole 103 connects the first end 101 and the second end 102, forming a hollow structure within the sleeve 10 to facilitate mounting components. In this embodiment, the first end 101 is positioned adjacent to the support platform, and the second end 102 is positioned adjacent to the light-emitting module 210.

[0028] In this embodiment, the first rotating member 20 is rotatably disposed at the first end 101 for fixing the rotating connection device 100 to a supporting platform, such as a lamp pole, lamp holder 212, or other supporting and fixing component. At the same time, the first rotating member 20 is also used to increase the degree of freedom of the rotating connection device 100, so that the rotating connection device 100 can adapt to more application scenarios. Specifically, the first rotating member 20 includes a first rotating shaft 22, and the first rotating shaft 22 has a first rotation axis O1. The first rotation axis O1 can be parallel to or coincide with the axis of the center hole 103, thereby maintaining a high coaxiality of the rotating connection device 100 during the rotation process, reducing vibration and noise caused by axis offset, and improving rotation stability.

[0029] The first rotating shaft 22 serves as the main structure of the first rotating member 20. The first rotating shaft 22 is roughly in the shape of a cylindrical shaft. One end of the first rotating shaft 22 is inserted into the center hole 103 to achieve a movable connection with the sleeve 10, and the other end is used to connect to the support platform. This embodiment does not limit the specific structure of the first rotating shaft 22. As a specific example, the first rotating shaft 22 may include a rotating end 221 and a connecting end 222 connected to each other. The rotating end 221 is embedded in the center hole 103 and can be movably connected to the sleeve 10, and the connecting end 222 is arranged outside the sleeve 10. This embodiment does not limit the specific structure of the rotating end 221 and the connecting end 222. For example, the connecting end 222 can be configured as a threaded connecting end 222, which can be adapted to connect with the threaded hole on the support platform. In some embodiments, the connecting end 222 can also be configured as a plug-in end, a snap-on end, or other forms of connecting components, which can be respectively connected to the corresponding plug-in hole or snap-on buckle on the support platform.

[0030] See also Figure 3 and Figure 4In some embodiments, in order to prevent the first rotating member 20 from detaching from the sleeve 10 during the rotation process, the first rotating member 20 further includes a clamping member 23. Specifically, the clamping member 23 is used to movably connect the first rotating member 20 to the sleeve 10. In this embodiment, the first rotating shaft 22 is provided with a first clamping groove 223, and the first clamping groove 223 can surround the outer peripheral wall 1022 of the first rotating shaft 22, that is, the first clamping groove 223 extends around the first rotating shaft 22. The hole wall of the center hole is provided with a second clamping groove 104, and the second clamping groove 104 is arranged on the outer periphery of the first clamping groove 223 and corresponds to the first clamping groove 223. "Corresponding" can be understood as the second clamping groove 104 surrounds the outer periphery of the first clamping groove 223, and the bottom wall of the first clamping groove 223 and the bottom wall of the second clamping groove 104 are roughly located on the same plane.

[0031] In this embodiment, the clamping member is an annular structure adapted to the shape of the center hole. For example, the clamping member 23 may specifically be a clamping ring 231. In some other embodiments, the clamping member may also be a clamping block, which is connected to the sleeve 10 via a connecting structure. The clamping member 23 is embedded in the first clamping groove 223 and the second clamping groove 104, thereby preventing the first rotating member 20 from disengaging from the sleeve 10 during rotation, and effectively preventing the first rotating shaft 22 from axially moving during relative rotation, thereby ensuring the rotational stability of the first rotating shaft 22 and the sleeve 10. At the same time, the coordinated connection between the clamping ring 231, the first clamping groove 223, and the second clamping groove 104 makes the connection between the first rotating shaft 22 and the sleeve 10 more stable and capable of withstanding greater torque and radial force.

[0032] Furthermore, the clamping member 23 is also used to lock the first rotating member 20 and sleeve 10 when the first rotating member 20 is rotated to a predetermined position relative to the sleeve 10 under the action of an external force, and when the external force is removed, the first rotating member 20 and sleeve 10 are locked, thereby fixing the lighting device 200 at a predetermined angle desired by the user. When the first rotating member 20 rotates relative to the sleeve 10, the clamping member 23 can contact and squeeze the sleeve 10 and the first rotating shaft 22, generating friction. This friction secures the first rotating member 20 to the sleeve 10 when the first rotating member 20 rotates to the predetermined position relative to the sleeve 10. In other words, the rotational damping between the first rotating member 20 and the sleeve 10 is generated by the friction between the clamping member 23, the first rotating shaft 22, and the inner wall of the sleeve 10. In this embodiment, the magnitude of the frictional force can be adjusted by the adjustment assembly 30, allowing the rotating connection assembly to adapt to different rotational damping in different usage environments, thereby improving the stability and flexibility of the rotating connection device.

[0033] Specifically, when an external force acts on the first rotating member 20, the first rotating shaft 22 can rotate relative to the sleeve 10, so that the clamping member 23, which is in contact with and squeezed by the groove wall of the first clamping groove 223, rotates accordingly and tends to move relative to the first rotating shaft 22. As a result, the sleeve 10, which is in contact with and squeezed by the clamping member 23, also tends to move relative to the first rotating shaft 22, that is, friction exists between the sleeve 10 and the first rotating shaft 22. Due to the friction between the sleeve 10, the clamping member 23 and the first rotating shaft 22, when the first rotating shaft 22 rotates to a predetermined position, that is, when the external force disappears, the sleeve 10 and the first rotating shaft 22 are fixed and cannot move relative to each other. At this time, the first rotating member 20 and the sleeve 10 are relatively stationary, thereby achieving the locking of the first rotating member 20 and the sleeve 10.

[0034] It should be noted that an external force can also act on the sleeve 10 to cause it to rotate relative to the first rotating shaft 22. Similarly, during the rotation of the sleeve 10, the clamping member 23, which contacts and compresses the groove wall of the second clamping groove 104, rotates accordingly and tends to move relative to it. As a result, the first rotating shaft 22, which contacts and compresses the clamping member 23, also tends to move relative to the sleeve 10, that is, friction exists between the sleeve 10 and the first rotating shaft 22. The external force can specifically be the user manually rotating the first rotating connector or manually rotating the sleeve 10, which is not specifically limited in this embodiment.

[0035] To further enhance the rotational freedom of the rotatable connection device 100, in this embodiment, a second rotatable member 40 is rotatably disposed at the second end 102 to drive the light-emitting module 210 to rotate. This allows the light-emitting module 210 to have an adjustable light-emitting position or angle, thereby increasing the light-emitting range of the lighting device 200. The second rotatable member 40 may include a rotatable engagement portion 41 and a rotatable connection portion 42, which are interconnected. The rotatable engagement portion 41 is receivable within the center hole 103 and rotatable relative to the sleeve 10. The rotatable connection portion 42 extends through the second end 102 and protrudes relative to the center hole 103. In this embodiment, the rotatable connection portion 42 is used to connect to an external device, which may be the light-emitting module 210. The end of the rotatable connection portion 42 facing away from the center hole 103 is detachably connected to the light-emitting module 210 to facilitate installation and replacement of the light-emitting module 210. This embodiment does not limit the connection method between the rotatable connection portion 42 and the light-emitting module 210; for example, a threaded connection, a plug-in connection, a snap-on connection, etc., may be used, and the connection may be configured according to actual usage requirements.

[0036] In this embodiment, the rotational engagement portion 41 is used to flexibly position the second rotatable member 40 within the center hole 103 to achieve synchronous rotation of the light-emitting module 210 and the second rotatable member 40. Specifically, the radial dimension of the rotational engagement portion 41 is greater than that of the connecting portion, and the diameter of the center hole 103 at the second end 102 can gradually decrease along the axis of the center hole, allowing the rotational connection end 222 to rotate through the second end 102 and constrain the rotational engagement portion 41 within the second end 102. The surface of the rotational engagement portion 41 contacts and compresses the wall of the center hole 103. This, on the one hand, retains the second rotatable member 40 within the center hole 103 and prevents it from disengaging from the second end 102. On the other hand, under the action of external forces, the rotational engagement portion 41 can also compressively contact the inner wall of the sleeve 10 to generate frictional damping, allowing the second rotatable member 40 to remain stationary relative to the sleeve 10 after rotating to a predetermined position, thereby allowing the light-emitting module 210 to remain in a suspended position after rotating to a predetermined light-emitting position.

[0037] Specifically, the second end 102 has an end face 1021 and a peripheral wall 1022 connected to each other. The peripheral wall 1022 is arranged around the axis of the center hole 103 and forms the outer surface of the sleeve 10. The center hole 103 passes through the end face 1021, and the aperture of the center hole 103 in the end face 1021 is smaller than the aperture of the center hole 103 in the peripheral wall 1022, so that the rotating fitting part 41 is clamped between the end face 1021 and the peripheral wall 1022.

[0038] See also Figure 3 、 Figure 5 and Figure 6 To facilitate rotation, in this embodiment, the wall of the center hole 103 may be provided with a spherical portion 1031, and the outer surface of the rotational engagement portion 41 may include a spherical surface. Thus, the rotational engagement portion 41 and the spherical portion 1031 form a spherical hinge connection. This simplifies the mechanical structure and evenly distributes the friction during the rotation of the second rotational member 40, reducing local wear, extending the service life of the device, and providing more stable contact and more precise motion control. Furthermore, the coordination between the spherical portion 1031 and the rotational engagement portion 41 enables the rotational engagement portion 41 to have multiple degrees of freedom of rotation relative to the sleeve 10. This means that the second rotational member 40 can flexibly adjust its position and angle in multiple directions, thereby increasing the light output range and angle of the light-emitting module 210 to meet the lighting device 200's requirements for emitting light at different angles or positions.

[0039] For example, in this embodiment, the second rotating member 40 has a second rotation axis O2, which is used to allow the second rotating member 40 to rotate within the center hole 103. That is, the second rotation axis O2 is approximately parallel to or coincides with the axis of the center hole 103, and that is, the second rotation axis O2 is approximately parallel to or coincides with the first rotation axis O1. When the second rotating member 40 rotates around the second rotation axis O2, the light-emitting module 210 connected to the second rotating member 40 also rotates around the second rotation axis O2, thereby achieving multi-angle adjustment of the light-emitting module 210 in the horizontal direction or axial direction to meet the requirements of light direction in different scenarios. It should be noted that this embodiment does not limit the angle of rotation of the second rotating member 40 around the second rotation axis O2. For example, it can be 360°, 180°, or other angles, and can be set according to actual usage requirements. By arranging a first rotating member 20 and a second rotating member 40 that rotate approximately coaxially, the light-emitting module 210 can be rotated beyond 360° relative to the supporting platform without affecting the connecting wires, thereby improving the rotation flexibility of the rotating connection device 100 and increasing the angle adjustment range of the lighting device 200.

[0040] In some embodiments, the second rotating member 40 may further have a third rotation axis O3, which intersects with the second rotation axis O2. The third rotation axis O3 is used to allow the second rotating member 40 to tilt and swing relative to the sleeve 10. Specifically, a notch 1023 is defined in the peripheral wall 1022 of the second end 102. The opening of the notch 1023 extends toward the end surface 1021 and communicates with the center hole 103. The third rotation axis O3 is located between the center hole 103 and the notch 1023 and intersects with the axis of the center hole 103. For example, the third rotation axis O3 and the second rotation axis O2 are perpendicular to each other. As a result, the rotating connection portion 42 can swing back and forth between the end surface 1021 and the notch 1023 to adjust the pitch angle of the second rotating member 40. Furthermore, the second rotating member 40 can remain suspended at a predetermined angle due to the friction between the rotating engagement portion 41 and the inner wall of the sleeve 10, further expanding the light coverage area. Since the notch 1023 is provided on the peripheral wall 1022 , the notch 1023 limits the axial swing range of the second rotating member 40 relative to the central hole 103 to 0°~90°, and mechanical interference or damage caused by excessive rotation can be avoided without the need for additional limit members.

[0041] In some embodiments, the second rotating member 40 may further have a fourth rotating axis O4, wherein the fourth rotating axis O4, the third rotating axis O3, and the second rotating axis O2 intersect with each other, and the fourth rotating axis O4 is used to allow the second rotating member 40 to rotate or swing relative to the sleeve 10 in the notch 1023. Specifically, the fourth rotating axis O4 passes through the notch 1023 and may intersect with the axis of the center hole 103 or may be perpendicular to the axis of the center hole 103. For example, the fourth rotating axis O4 may be perpendicular to the second rotating axis O2, but this embodiment does not impose any restrictions on this. When the second rotating member 40 swings to the notch 1023 relative to the third rotating axis O3, the rotating connection portion 42 is located in the notch 1023 and can rotate or swing around the fourth rotating axis O4, thereby achieving multi-dimensional rotation control of the rotating connection device 100, further improving the light output angle and light output range of the lighting device 200.

[0042] It can be understood that when the rotating connecting device 100 rotates relative to any of the above-mentioned rotating axes, under the action of the second elastic member 32, the rotating matching portion 41 always abuts against the spherical portion 1031 of the center hole 103 (that is, the inner wall of the sleeve 10) and generates friction, and the retaining ring 231 always abuts against the first retaining groove 223 and the second retaining groove 104 to ensure that the first rotating member 20 and the second rotating member 40 can be stationary relative to the sleeve 10 when they rotate to a predetermined position, and the light-emitting module 210 hovers at the light-emitting position required by the user. In order to ensure that there is sufficient friction between the rotating fitting portion 41 and the spherical portion 1031, and between the snap ring 231 and the first snap groove 223 and the second snap groove 104 to fix the rotating connection assembly in a predetermined position, in this embodiment, the adjustment assembly 30 is arranged in the center hole 103 and is located between the first rotating member 20 and the second rotating member 40. The adjustment assembly 30 can squeeze the first rotating member 20 and the second rotating member 40 under the action of external force, so that the rotating fitting portion 41 presses the inner wall of the sleeve 10 and the snap ring 231 presses the sleeve 10 and the first rotating shaft 22.

[0043] The adjustment assembly 30 may specifically include a first elastic member 31, a positioning member 33, and a second elastic member 32. The positioning member 33 is disposed between the first elastic member 31 and the second elastic member 32. The first elastic member 31 elastically abuts between the first rotating member 20 and the positioning member 33, causing the first rotating member 20 to abut against the sleeve 10. The second elastic member 32 elastically abuts between the second rotating member 40 and the positioning member 33, causing the second rotating member 40 to abut against the sleeve 10. This embodiment does not limit the specific structures of the first elastic member 31 and the second elastic member 32. For example, the first elastic member 31 and the second elastic member 32 may be elastic components such as springs, elastic sleeves, springs, and elastic rods, and may be configured according to actual usage requirements.

[0044] Because the positioning member 33 is disposed within the sleeve 10 and separates the first elastic member 31 from the second elastic member 32, the elastic force generated by the deformation of the first elastic member 31 and the elastic force generated by the deformation of the second elastic member 32 are independent of each other. That is, the elastic force generated by the first elastic member 31 is not transmitted to the second elastic member 32 via the positioning member 33, and the elastic force generated by the second elastic member 32 is not transmitted to the first elastic member 31 via the positioning member 33. As a result, the first and second rotating members 20 and 40 can rotate relatively independently, reducing mutual interference between the first and second rotating members 20 and 40, thereby achieving independent control of the first and second rotating members 20 and 40, thereby improving the adjustment flexibility and stability of the first and second rotating members 20 and 40. Furthermore, the arrangement of the first and second elastic members 31 and 32 can also prevent overall performance degradation caused by fatigue or failure of individual elastic members, thereby increasing the service life of the rotating connection device 100. At the same time, it can also provide double cushioning, effectively reducing wear and noise caused by vibration or impact, and improving the user experience.

[0045] Specifically, the positioning member 33 is fixed inside the sleeve 10, and the first elastic member 31 and the second elastic member 32 both abut against the positioning member 33, causing the first elastic member 31 and the second elastic member 32 to deform, thereby generating an elastic force. The elastic force pushes the first rotating member 20 and the second rotating member 40 to further compress the sleeve 10, thereby increasing the friction between the first rotating member 20, the second rotating member 40, and the sleeve 10. More specifically, when the first rotating shaft 22 rotates relative to the sleeve 10, the first elastic member 31 deforms and generates a thrust toward the first rotating member 20 to compress the retaining ring 231, thereby increasing the friction between the retaining ring 231, the first rotating member 20, and the sleeve 10. When the second rotating member 40 rotates relative to the sleeve 10, the second elastic member 32 deforms and generates a thrust toward the second rotating member 40 to force the rotating engagement portion 41 against the sleeve 10.

[0046] Since the rotating fitting portion 41 is spherical, in order to improve the connection stability between the second elastic member 32 and the rotating fitting portion 41, in some embodiments, the adjustment assembly 30 may further include a gasket 34, which is used to increase the contact area between the spherical portion 411 and the second elastic member 32 to form a more stable contact. Specifically, the gasket 34 is arranged between the second elastic member 32 and the spherical portion 411. When the second rotating member 40 rotates, the second elastic member 32 presses the gasket 34 and the spherical portion 411. By providing the gasket 34, the pressure of the second elastic member 32 can be evenly distributed on the spherical portion 411, avoiding wear or deformation caused by excessive local pressure, and improving the stability and reliability of the rotating connection device 100. At the same time, the gasket 34 can compensate for the wear between the spherical portion 411 and the sleeve 10 caused by long-term use, ensuring that the rotating connection device 100 can still maintain good performance after long-term operation.

[0047] It should be noted that the external force applied to the first rotating member 20 may be a user manually rotating the first rotating member 20 or manually rotating the sleeve 10. As a specific example, the positioning member 33 can be adjustably disposed within the center hole 103. When the second rotating member 40 rotates or is subjected to a thrust from the parallel sleeve 10, the second elastic member 32 is compressed and pushes the positioning member 33 toward the first rotating member 20. Since the first rotating member 20 is confined within the sleeve 10, the first elastic member 31 connected to the positioning member 33 elastically pushes the first rotating shaft 22, causing the retaining ring 231 to press the first rotating shaft 22 and the sleeve 10.

[0048] In this embodiment, to increase the flexibility of adjusting the rotational damping of the rotating connection device 100, thereby further improving the stability of the rotating connection device 100 and adapting it to a wider range of usage scenarios, the elastic forces of the first elastic member 31 and the second elastic member 32 can be different. The first rotating member 20 and the second rotating member 40 can form different rotational damping relative to the sleeve 10 to achieve differentiated adjustment. Specifically, the first elastic member 31 and the second elastic member 32 with different elastic coefficients can be used to achieve different holding forces to form different rotational damping.

[0049] As an example, when the first elastic member 31 and the second elastic member 32 are springs, by setting the elastic modulus of the first elastic member 31 and the elastic modulus of the second elastic member 32 to be different, that is, the first elastic member 31 and the second elastic member 32 are made of different materials, so that the deformation amounts of the first elastic member 31 and the second elastic member 32 are different, different contact pressures can be applied to the first rotating member 20 and the second rotating member 40. In other words, the first rotating member 20 and the second rotating member 40 can overcome different amounts of friction to achieve locking with the sleeve 10, thereby achieving differentiated adjustment. For example, in this embodiment, the first rotating member 20 is used to connect to the lamp pole or lamp holder 212, and the second rotating member 40 is used to connect to the light module 210. The elastic modulus of the first elastic member 31 can be greater than the elastic modulus of the second rotating member 40, so that the first rotating member 20 can generate greater friction with the sleeve 10, thereby ensuring the stability of the connection between the first rotating member 20 and the lamp pole. The friction force generated between the second rotating member 40 and the sleeve 10 is relatively small, and a more flexible rotation can be achieved to meet the light emission requirements of the light-emitting module 210 at multiple positions and angles.

[0050] As another example, different contact pressures can be achieved by configuring the first and second elastic members 31, 32 to have different compression amounts, thereby creating different rotational damping. For example, the number of coils of the first and second elastic members 31, 32 can be different, resulting in different deformation amounts of the first and second elastic members 31, 32, thereby creating different contact pressures on the first and second rotating members 20, 40. This embodiment does not impose any specific restrictions on the number of coils of the first and second elastic members 31, 32; these can be configured based on actual usage requirements. In this embodiment, the spacing between the positioning member 33 and the first rotating member 20 and the spacing between the positioning member 33 and the second rotating member 40 can be configured to be different, thereby adjusting the deformation amounts of the first and second elastic members 31, 32. During installation and use of the rotating connection device 100, the user can secure the positioning member 33 at different positions along the axis of the center hole 103 using the positioning portion 331 and the mating portion 105 to adjust the spacing between the positioning member 33, the first rotating member 20, and the second rotating member 40. Specifically, the positioning member 33 is provided with a positioning portion 331. A mating portion 105 is provided within the center hole 103, corresponding to the positioning portion 331. The positioning portion 331 is connected to the mating portion 105 to securely mount the positioning member 33. The mating portion 105 has multiple positions capable of aligning with the positioning portion 331. A user can manually secure the positioning portion 331 to different positions on the mating portion 105 to adjust the spacing between the positioning member 33 and the first rotating member 20 and the compression between the positioning member 33 and the second rotating member 40. This results in different elastic forces generated by the first elastic member 31 and the second elastic member 32, thereby producing different rotational damping. This embodiment does not limit the specific forms of the positioning portion 331 and the mating portion 105. For example, the positioning portion 331 can be an external thread provided on the outer periphery of the positioning member 33, and the mating portion 105 can be an internal thread provided on the wall of the center hole 103 (i.e., the inner wall of the sleeve 10). The internal thread and the external thread can be threadedly engaged at different positions to secure the positioning member 33 to the sleeve 10. The positioning portion 331 can also be a raised structure arranged on the outer periphery of the positioning member 33, and the matching portion 105 can also be a plurality of groove structures, which are arranged in sequence along the axis of the center hole 103, and the raised structure is inserted into any one of the grooves to achieve a fixed connection between the positioning member 33 and the sleeve 10.

[0051] See also Figure 3 、 Figure 5 and Figure 7 In order to prevent the elastic potential energy of the first elastic member 31 or the second elastic member 32 from being too large when deformed, causing the positioning member 33 to move or move too much to affect the adjustment stability of the rotating connection device 100, in this embodiment, the positioning member 33 can abut against the limiting boss 1038 in the hole wall of the center hole 103 to prevent the positioning member 33 from moving.

[0052] Specifically, the center hole 103 is provided with a coaxial and interconnected first hole section 1033 and a second hole section 1034. The first hole section 1033 is used to mount the first rotating member 20 and the first elastic member 31, while the second hole section 1034 is used to mount the second elastic member 32 and the second rotating member 40. A limiting boss 1038 is provided at the junction of the first hole section 1033 and the second hole section 1034. The limiting boss 1038 protrudes from the inner wall of the first hole section 1033 and faces the end of the positioning member 33. It should be noted that the positioning member 33 can be disposed in either the first hole section 1033 or the second hole section 1034, and this is not specifically limited in this embodiment. As a specific example, when the positioning member 33 is disposed in the first hole section 1033, the limiting boss 1038 is disposed on the side of the positioning member 33 facing away from the first rotating member 20; when the positioning member 33 is disposed in the second hole section 1034, the limiting boss 1038 is disposed on the side of the positioning member 33 facing away from the second rotating member 40. This effectively prevents the positioning member 33 from moving or moving too much due to excessive elastic potential energy during deformation of the first elastic member 31 or the second elastic member 32, thereby ensuring the adjustment accuracy and stability of the rotating connection device 100. It should be noted that when the positioning portion 331 of the positioning member 33 is located at different positions of the mating portion 105, the end of the positioning member 33 may or may not abut against the limiting boss 1038.

[0053] This embodiment does not limit the specific structure of the limiting boss 1038. For example, the limiting boss 1038 may be a raised structure that protrudes relative to the wall of the first hole section 1033 or the second hole section 1034. The aperture of the first hole section 1033 may be the same as or different from the aperture of the second hole section 1034. This embodiment does not impose any specific restrictions on this. When the apertures of the first hole section 1033 and the second hole section 1034 are different, the limiting boss may also be a stepped surface formed by the difference in apertures between the first and second hole sections, with at least a portion of the stepped surface opposing the end of the positioning member 33 to limit the positioning member 33.

[0054] As a specific example, the aperture of the first hole section 1033 is larger than the aperture of the second hole section 1034, so that the hole wall of the center hole 103 includes a first circumferential wall 1035, a connecting wall 1037 and a second circumferential wall 1036 connected to each other, the inner diameter of the first circumferential wall 1035 is larger than the inner diameter of the second circumferential wall 1036, and the connecting wall 1037 is connected between the first circumferential wall 1035 and the second circumferential wall 1036 to form a step surface, that is, a limiting boss 1038, and the step surface is opposite to the positioning member 33 and protrudes relative to the positioning member 33. By utilizing the step surface formed by the diameter difference between the first hole section 1033 and the second hole section 1034, the positioning member 33 can be limited without the need for an additional limiting structure, which can reduce the production cost of the rotating connection device 100 and effectively limit the movement of the positioning member 33. This can prevent the first elastic member 31 from being overcompressed, which would cause excessive friction between the first rotating member 20 and the sleeve 10, making it difficult for the first rotating member 20 to rotate, thereby ensuring the adjustment flexibility and stability of the first rotating member 20. At the same time, when one end of the positioning member 33 abuts against the connecting wall 1037, the connection between the positioning member 33 and the sleeve 10 can be further strengthened.

[0055] It can be understood that the aperture of the first hole section 1033 can also be smaller than the aperture of the second hole section 1034, so that the inner diameter of the first peripheral wall 1035 is smaller than the inner diameter of the second peripheral wall 1036. The positioning member 33 is arranged between the connecting wall 1037 and the second rotating member 40 to prevent the second elastic member 32 from being over-compressed, so that the friction between the second rotating member 40 and the sleeve 10 is too large, making it difficult for the second rotating member 40 to rotate, thereby ensuring the adjustment flexibility and adjustment stability of the second rotating member 40.

[0056] In this embodiment, the rotating connection device 100 can be configured as a through-hole structure to facilitate the insertion of wires to achieve electrical conduction between the light-emitting module 210 and the external circuit. Specifically, the first rotating member 20 has a first through-hole 24, the adjustment assembly 30 has a second through-hole 35, and the second through-hole 35 sequentially passes through the first elastic member 31, the positioning member 33, and the second elastic member 32. The second rotating member 40 has a third through-hole 43, and the first through-hole 24, the second through-hole 35, and the third through-hole 43 are connected to each other and coaxially arranged to form a channel that passes through the rotating connection device 100. The lighting device 200 may also include wires, which pass through the channel to electrically connect the light-emitting module 210 and the external circuit. By providing the first through-hole 24, the second through-hole 35, and the third through-hole 43, the rotating connection device can be easily wired in different application scenarios, thereby improving the adaptability of the device.

[0057] See also Figure 5 and Figure 8In order to prevent the wire from being twisted, damaged or ineffective due to excessive rotation of the first rotating member 20, in some embodiments, the rotating connection device 100 may further include a first limit member 51 and a second limit member 52. The first limit member 51 is fixedly arranged on the inner wall of the sleeve 10, and the second limit member 52 is arranged between the first rotating shaft 22 and the hole wall of the center hole 103 and can move along a specified circumference as the first rotating shaft 22 rotates. For example, the second limit member 52 can be arranged on the first rotating shaft 22. The specified circumference is a circular path or an arc path with the first rotating axis O1 as the center. It should be understood that the specified circumference is not necessarily a visible circumference. It can be a virtual circumference, but it objectively exists in the process of the first rotating shaft 22 rotating relative to the sleeve 10, and the first limit member 51 and the second limit member 52 are both located on the specified circumference. Because the first limiting member 51 is disposed along the motion path of the second limiting member 52, when the first rotating shaft 22 rotates to the extreme position relative to the sleeve 10, the second limiting member 52 and the first limiting member 51 abut against each other, and the first limiting member 51 blocks further movement of the second limiting member. The mutual abutment between the first limiting member 51 and the second limiting member 52 can limit the extreme angle of rotation of the first rotating member 20 or the sleeve 10, preventing the first rotating member 20 or the sleeve 10 from rotating indefinitely in a single direction, thereby avoiding damage and failure due to twisting of the wire, thereby preventing damage to the rotating connection device 100 due to improper operation, and improving the service life of the lighting device 200. The "extreme position" can be understood as the maximum angular position at which the first rotating shaft 22 can rotate in a single direction relative to the sleeve 10. When the first rotating shaft 22 is in this position relative to the sleeve 10, the second limiting member 52 and the first limiting member 51 contact and abut against each other, thereby preventing the first rotating shaft 22 from further rotating in a single direction relative to the sleeve 10.

[0058] As an example, the first limiting member 51 and the second limiting member 52 can both be raised structures, spaced apart on the aforementioned designated circumference. When the first limiting member 51 moves along the designated circumference, it can move relatively away from or closer to the second limiting member. When the first limiting member 51 and the second limiting member 52 contact each other, it indicates that the first rotating member 20 has reached the limit angle of rotation relative to the sleeve 10. Specifically, the first limiting member 51 and the second limiting member 52 can be ball bearings, and the first limiting member 51 and the second limiting member 52 can be of different sizes to improve the reliability of the limit.

[0059] Furthermore, in some embodiments, in order to guide the first limiting member 51 to move toward the second limiting member 52, the first rotating shaft 22 may also be provided with a guide groove 224. Specifically, the guide groove 224 is provided on the outer peripheral wall of the first rotating shaft 22, and is used to guide and limit the movement between the first limiting member 51 and the second limiting member 52. The guide groove 224 extends along a specified circumference, and the second limiting member 52 is movably provided in the guide groove 224. The first limiting member 51 is at least partially located in the guide groove 224. The provision of the guide groove 224 enables the first limiting member 51 and the second limiting member 52 to stably contact and interact with each other during the rotation of the first rotating shaft 22, thereby improving the reliability of the limit. At the same time, it can effectively prevent the limit failure caused by external force or vibration, and ensure the stability and reliability of the device under various working conditions.

[0060] As another example, in some embodiments, either the first stopper 51 or the second stopper 52 may be a protrusion, while the other may be a groove. For example, the first stopper 51 may be a groove disposed on the outer periphery of the first rotating shaft 22, and the second stopper 52 may be a protrusion disposed on the inner wall of the sleeve 10. The protrusion is movably received in the groove. When the first rotating shaft 22 rotates to a maximum angle relative to the sleeve 10, the protrusion abuts against the sidewall of the groove. The provision of the groove and protrusion prevents the first rotating shaft 22 from rotating indefinitely in a single direction, thereby preventing damage to the rotating connection device 100 due to improper operation and thereby improving the service life of the rotating connection device. Furthermore, the protrusion is movably embedded in the groove, providing a certain degree of fixation. During the rotation of the first rotating member 20 relative to the sleeve 10, the protrusion remains embedded in the groove, which, to a certain extent, prevents the first rotating member 20 from falling off and separating from the sleeve 10, further improving the stability of the rotating connection device 100 during rotation.

[0061] In summary, the rotating connection device 100 provided in the embodiment of the present application includes a first rotating member 20, a second rotating member 40, and an adjustment assembly 30. The first elastic member 31, the second elastic member 32, and the positioning member 33 of the adjustment assembly 30 are such that the first elastic member 31 is abutted between the positioning member 33 and the first rotating member 20, and the second elastic member 32 is abutted between the positioning member 33 and the second rotating member 40. By providing the positioning member 33, the first elastic member 31 and the second elastic member 32 can be spaced apart, so that the first elastic member 31 and the second elastic member 32 can deform independently of each other, that is, the elastic force generated by the deformation of the first elastic member 31 will not be transmitted to the second elastic member 32 via the positioning member, thereby reducing the mutual interference between the first rotating member 20 and the second rotating member 40 to achieve the function of independently regulating the first rotating member 20 and the second rotating member 40, thereby improving the adjustment flexibility and stability of the first rotating member 20 and the second rotating member 40. Furthermore, the independent deformation allows different rotational damping to be formed between the first rotating member 20 and the sleeve 10, and between the second rotating member 40 and the sleeve 10 to adapt to different usage environments and connection requirements, further improving the adjustment flexibility of the first rotating member 20 and the second rotating member 40.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means 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 application. In this specification, the schematic representations 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 features of different embodiments or examples without contradiction.

[0063] 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 defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotary connection device, characterized in that: include: A sleeve, the sleeve having a first end and a second end that are separated from each other, and a central hole is provided in the sleeve to communicate with the first end and the second end; a first rotating member rotatably disposed at the first end; a second rotating member rotatably disposed at the second end; as well as an adjusting assembly disposed in the center hole and located between the first rotating member and the second rotating member; the adjusting assembly includes a first elastic member, a second elastic member, and a positioning member, the positioning member being disposed between the first elastic member and the second elastic member, the first elastic member elastically abutting between the first rotating member and the positioning member so that the first rotating member abuts against the sleeve; the second elastic member elastically abutting between the second rotating member and the positioning member so that the second rotating member abuts against the sleeve; The positioning member is provided with a positioning portion, and the hole wall of the center hole is provided with a matching portion corresponding to the positioning portion; the positioning portion is used to clamp and cooperate with different parts of the matching portion, so that the positioning member can be adjustably positioned at different positions of the matching portion in the axial direction of the center hole to adjust the distance between the positioning member and the first rotating member and the distance between the positioning member and the second rotating member.

2. The rotary connection device according to claim 1, characterized in that: The positioning portion is an external thread provided on the outer periphery of the positioning member, and the matching portion is an internal thread provided on the hole wall of the central hole, and the internal thread is screwed into the external thread.

3. The rotary connection device according to claim 1, characterized in that: The first rotating member includes a first rotating shaft, one end of which is rotatably inserted into the center hole, the first elastic member is supported between the positioning member and the first rotating shaft, the first rotating shaft can rotate relative to the sleeve around a first rotating axis, and the first rotating axis is parallel to or coincides with the axis of the center hole.

4. The rotary connection device according to claim 3, characterized in that: The rotating connection device also includes a first limit member and a second limit member. The first limit member is fixedly arranged on the hole wall of the center hole, and the second limit member is arranged between the first rotating shaft and the hole wall of the center hole. The first limit member and the second limit member are parallel in the circumferential direction of the first rotating shaft.

5. The rotary connection device according to claim 4, characterized in that: The outer wall of the first rotating shaft is provided with a guide groove, which surrounds the outer circumference of the first rotating shaft. The second limiting member can be movably arranged in the guide groove. The first limiting member is at least partially located in the guide groove and is located on the movement path of the second limiting member.

6. The rotary connection device according to any one of claims 1 to 5, characterized in that: The second rotating member includes a rotating fitting portion and a rotating connecting portion connected to each other, the rotating fitting portion is rotatably arranged in the center hole, the rotating connecting portion passes through the second end and protrudes to the outside relative to the center hole, and the radial dimension of the rotating fitting portion is larger than the radial dimension of the rotating connecting portion; the rotating fitting portion can rotate around the second rotating axis relative to the sleeve, and the second rotating axis is parallel to or coincides with the axis of the center hole.

7. The rotary connection device according to claim 6, characterized in that: The second end has an end face and a circumferential wall connected to each other, and the circumferential wall is arranged around the axis of the center hole; the circumferential wall is also provided with a notch, which extends to the end face and is connected to the center hole; the rotational fitting portion and the hole wall of the center hole are spherically rotated together, and the rotational fitting portion can also rotate relative to the sleeve around a third rotation axis, and the third rotation axis intersects with the axis of the center hole.

8. The rotary connection device according to claim 7, characterized in that: The hole wall of the center hole is provided with a spherical portion, and the outer surface of the rotating fitting portion includes a spherical surface. The spherical portion and the spherical surface cooperate to enable the rotating fitting portion to have multiple rotational degrees of freedom relative to the sleeve; when the rotating connection portion is located in the notch, the second rotating member can also rotate around a fourth rotation axis relative to the sleeve, and the fourth rotation axis is provided in the notch, and the second rotation axis, the third rotation axis, and the fourth rotation axis intersect with each other.

9. The rotary connection device according to any one of claims 1 to 5, characterized in that: The second rotating member includes a rotating fitting portion, which is rotatably arranged in the center hole. The outer surface of the rotating fitting portion includes a spherical surface. The adjustment assembly also includes a gasket, which is arranged between the second elastic member and the spherical surface. When the second rotating member rotates, the second elastic member presses the gasket and the spherical surface.

10. The rotary connection device according to any one of claims 1 to 5, characterized in that: The center hole includes a first hole section and a second hole section that are coaxial and connected. The first elastic member, the first rotating member and the positioning member are arranged in the first hole section, and the second elastic member and the second rotating member are arranged in the second hole section. A limiting boss is provided at the connection between the first hole section and the second hole section. The limiting boss protrudes relative to the inner wall of the first hole section and is opposite to the end of the positioning member.

11. The rotary connection device according to any one of claims 1 to 5, characterized in that: The first rotating member has a first through hole, the adjusting assembly has a second through hole, and the second through hole sequentially passes through the first elastic member, the positioning member, and the second elastic member; the second rotating member has a third through hole, and the first through hole, the second through hole, and the third through hole are coaxially arranged; the first through hole, the second through hole, and the third through hole are connected to each other for passing a wire.

12. A lighting device, characterized in that: include: The rotary connection device according to any one of claims 1 to 11, and A light-emitting module is connected to the rotating connection device.

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