Rotational joint and table lamp

Abstract

The invention relates to the technical field of lighting appliances, and provides a rotating joint and a table lamp. The rotational joint comprises a first shell assembly, a second shell assembly, a planetary gear assembly, a planet wheel assembly, a connecting shaft and a torsional spring, the first shell assembly and the second shell assembly are in butt joint through the connecting shaft to form a first containing cavity, the planet wheel assembly is arranged in the first shell assembly and connected with the second shell assembly, and the connecting shaft is sleeved with the torsional spring; the first end of the torsional spring is connected with the planet wheel assembly, and the second end of the torsional spring is rotationally connected to the second shell assembly; under the condition that the first shell assembly rotates, the planet wheel assembly drives the second shell assembly to rotate. Torque is provided through the torsion spring, transmission is achieved through the planet wheel assembly, and in the process that the first shell assembly rotates relative to the second shell assembly, the torsion of the torsion spring is kept unchanged, the hand feeling is good, and tilting cannot happen.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting fixtures, and particularly to a rotating joint and a table lamp. Background Art

[0002] Currently, adjustable table lamps all need to use several joints to achieve various rotations to meet diverse requirements. Existing table lamp joints use friction damping or additional torsion springs to provide torque when the joints rotate. When using friction plates alone, the feel is poor when the torque is large. When using friction plates plus torsion springs, due to the characteristics of the torsion springs, the torsion force increases linearly. When the rotation angle is relatively large, the torsion force is large and it will bounce up and cannot be balanced. To balance, the friction needs to be increased, but then the feel becomes poor again. Summary of the Invention

[0003] The present invention provides a rotating joint and a table lamp to solve the problem that existing table lamps cannot meet the needs of users and have a poor experience.

[0004] The present invention provides a rotating joint, including: a first housing assembly, a second housing assembly, a planetary gear assembly, a connecting shaft, and a torsion spring. The first housing assembly and the second housing assembly are docked through the connecting shaft to form a first accommodating cavity. The planetary gear assembly is arranged in the first housing assembly and is connected to the second housing assembly. The torsion spring is sleeved on the connecting shaft, and the first end of the torsion spring is connected to the planetary gear assembly, and the second end of the torsion spring is rotatably connected to the second housing assembly. When the first housing assembly rotates, the planetary gear assembly drives the second housing assembly to rotate.

[0005] Optionally, the first housing assembly includes a first housing. The planetary gear assembly includes a sun gear, a planetary gear, and an internal gear. The internal gear is fixedly arranged in the first housing. The sun gear is sleeved on the peripheral wall of the connecting shaft. The planetary gear is arranged between the internal gear and the sun gear and meshes with the internal gear and the sun gear respectively. The planetary gear is sleeved on the peripheral wall of the first end of the torsion spring.

[0006] Optionally, the first housing assembly further includes a first shaft body and an annular shaft body. The side wall of the first shaft body is arranged between the internal gear and the inner wall of the first housing. The annular shaft body is arranged on the internal gear. The annular shaft body cooperates with the bottom surface of the first shaft body to limit the internal gear.

[0007] Optionally, the second housing assembly includes a second housing and a second shaft body. The second shaft body is arranged in the second housing. The second shaft body and the annular shaft body are docked to form a second accommodating cavity. The torsion spring is located in the second accommodating cavity. A through hole is further provided at the top of the second shaft body. The second end of the torsion spring is rotatably arranged in the through hole.

[0008] Optionally, the rotational joint further includes an elastic member, a fastener and a first gasket, the elastic member and the first gasket are sequentially arranged between the fastener and the second shaft, and the fastener abuts against the elastic member.

[0009] Optionally, the rotation joint further includes a second gasket, and the second gasket is provided between the end of the connecting shaft and the bottom surface of the first shaft body and between the sun gear and the bottom surface of the first shaft body.

[0010] Optionally, the second housing assembly further includes a limiting member, the limiting member is sleeved and connected to the connecting shaft, and the limiting member matches the bottom surface of the first shaft body to limit the sun gear.

[0011] Optionally, the first shell assembly further includes a first end cover, which is disposed on an end surface of the first shell; the second shell assembly further includes a second end cover, which is disposed on an end cover of the second shell.

[0012] Optionally, the first shell assembly also includes a first mounting member, which is arranged on the outer wall of the first shell and is used to connect to the first rotating member; the second shell assembly also includes a second mounting member, which is arranged on the outer wall of the second shell and is used to connect to the second rotating member.

[0013] The present invention also provides a desk lamp, comprising: a lamp body and a support arm; the lamp body is connected to the support arm, the support arm comprises a plurality of connecting arms, and two adjacent ones of the plurality of connecting arms are connected by a rotating joint as described in any one of the above items.

[0014] The rotating joint and desk lamp provided by the present invention are provided with a planetary gear assembly in a first housing assembly and connected with a second housing assembly, and the first housing is rotated. Under the action of the planetary gear assembly, the first housing can rotate relative to the second housing; the first end of a torsion spring (the torsion spring is twisted at a certain angle according to target requirements to achieve a preset torque) is connected to the planetary gear assembly, and the second end of the torsion spring is rotationally connected to the second housing assembly. During the rotation of the first housing relative to the second housing, the torsion spring rotates accordingly, and the torsion angle of the torsion spring remains unchanged at this time, thereby achieving the torsion of the torsion spring remaining unchanged. The present invention provides torque through a torsion spring and realizes transmission through a planetary gear assembly. During the relative rotation of the first housing assembly relative to the second housing, the torsion of the torsion spring remains unchanged, and the hand feel is good, and no warping occurs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of a rotating joint provided by the present invention;

[0017] Figure 2 is one of the exploded views of the rotating joint provided by the present invention;

[0018] Figure 3 is another exploded view of the rotating joint provided by the present invention;

[0019] Figure 4 is a schematic cross-sectional view of a second housing assembly provided by the present invention;

[0020] Figure 5 is a schematic cross-sectional view of a first housing assembly provided by the present invention;

[0021] Figure 6 is one of the schematic cross-sectional views of a rotating assembly provided by the present invention;

[0022] Figure 7 is another schematic cross-sectional view of a rotating assembly provided by the present invention;

[0023] Figure 8 is a schematic structural diagram of a table lamp provided by the present invention;

[0024] Reference numerals:

[0025] 10, rotating joint;

[0026] 11, first housing assembly; 111, first housing; 112, first shaft body; 113, annular shaft body; 114, first mounting member; 115, first end cap;

[0027] 12, second housing assembly; 121, second housing; 122, second shaft body; 1221, through hole; 123, second end cap; 124, second mounting member; 125, limiting member;

[0028] 131, sun gear; 132, planetary gear; 133, internal gear;

[0029] 14, connecting shaft; 15, torsion spring; 16, elastic member; 17, fastener; 18, first gasket; 19, second gasket;

[0030] 20, first connecting arm; 30, second connecting arm; 40, lamp body. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of this embodiment clearer, the following will clearly and completely describe the technical solutions in this embodiment with reference to the accompanying drawings in this embodiment. Obviously, the described embodiments are a part of the embodiments, rather than all of the embodiments. Based on this embodiment, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this embodiment.

[0032] In the description of the embodiment, it should be noted that unless otherwise clearly defined and limited, the terms "connected" and "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0033] In the description of the embodiment, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiment and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this embodiment.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this embodiment, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0035] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain this embodiment, and should not be construed as a limitation of this embodiment.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of this embodiment. To simplify the disclosure of this embodiment, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit this embodiment. In addition, this embodiment may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, this embodiment provides examples of various specific processes and materials, but those of ordinary skill in the art can be aware of the applicability of other processes and / or the use of other materials.

[0037] The following combines Figures 1 to 8 to describe the rotating joint and the table lamp provided by this embodiment.

[0038] A rotating joint 10 provided by this embodiment includes a first housing assembly 11, a second housing assembly 12, a planetary gear assembly, a connecting shaft 14, and a torsion spring 15. The first housing assembly 11 and the second housing assembly 12 are docked through the connecting shaft 14 to form a first accommodation cavity. The planetary gear assembly is disposed in the first housing assembly 11 and is connected to the second housing assembly 12. The torsion spring 15 is sleeved on the connecting shaft 14, and the first end of the torsion spring 15 is connected to the planetary gear assembly, and the second end of the torsion spring 15 is rotatably connected to the second housing assembly 12; in the case where the first housing assembly 11 rotates, the planetary gear assembly drives the second housing assembly 12 to rotate.

[0039] Reference Figures 1 to 7 to describe the rotating joint 10 provided by this embodiment. Reference Figures 1 to 3 , both the first housing assembly 11 and the second housing assembly 12 are cylindrical. The first housing assembly 11 and the second housing assembly 12 can be docked through the connecting shaft 14 to form an integral body with a first accommodation cavity. By applying an external force, the first housing assembly 11 and the second housing assembly 12 can rotate relative to each other.

[0040] Specifically, a torsion spring 15 is disposed in the first accommodation cavity. The torsion spring 15 is sleeved on the connecting shaft 14, and the torsion spring 15 has a certain torsional force (the torsion spring 15 twisted to a certain angle according to a preset torsional force). The planetary gear assembly is disposed in the first housing assembly 11 and is connected to the second housing assembly 12. The first end of the torsion spring 15 is connected to the planetary gear assembly, and the second end of the torsion spring 15 is rotatably connected to the second housing assembly 12. Rotate the first housing assembly 11, the planetary gear assembly rotates, the first housing assembly 11 rotates relative to the second housing assembly 12, and the torsion spring 15 also rotates as the planetary gear assembly rotates. It can be understood that during the process of the torsion spring 15 rotating with the planetary gear assembly, the torsional force of the torsion spring 15 remains basically unchanged, thereby providing a good feel and not warping.

[0041] During the actual installation process, the two ends of the torsion spring 15 are fixed. For example, the first end of the torsion spring 15 is connected to the planetary gear assembly, and the second end of the torsion spring 15 is fixedly connected to the second housing 121. The first housing assembly 11 is rotated, and the two ends of the torsion spring 15 are twisted relative to each other. The larger the torsion angle, the linear increase of the torsion force of the torsion spring 15. When the torsion force of the torsion spring 15 reaches the preset torque, the twisting stops, and the second end of the torsion spring 15 is rotationally connected to the second housing assembly 12. At this time, the torsion force of the torsion spring 15 no longer increases, and the maximum value is maintained unchanged during the process of the first housing assembly driving the torsion spring 15 to rotate.

[0042] The rotary joint 10 provided in this embodiment is provided with a planetary gear assembly in the first housing assembly 11 and connected with the second housing assembly 12, and the first housing 111 is rotated. Under the action of the planetary gear assembly, the first housing 111 can rotate relative to the second housing 121; the first end of the torsion spring 15 (the torsion spring 15 is twisted at a certain angle according to the target demand to achieve a preset torque) is connected to the planetary gear assembly, and the second end of the torsion spring 15 is rotationally connected to the second housing assembly 12. During the rotation of the first housing 111 relative to the second housing 121, the torsion spring 15 rotates accordingly, and the torsion angle of the torsion spring 15 remains unchanged, thereby achieving the torsion of the torsion spring 15 remains unchanged. In this embodiment, the torsion spring 15 provides torque and the transmission is realized through the planetary gear assembly. During the relative rotation of the first housing assembly 11 relative to the second housing 121, the torsion of the torsion spring 15 remains unchanged, and the hand feel is good, and no warping occurs.

[0043] refer to Figure 5 In this embodiment, the first housing assembly 11 includes a first housing 111, and the planetary gear assembly includes a sun gear 131, a planetary gear 132 and an internal gear 133. The internal gear 133 is fixedly disposed in the first housing 111, and the outer wall surface of the internal gear 133 is connected to the inner wall surface of the first housing 111, and can be connected by snap connection; the sun gear 131 is sleeved on the peripheral wall of the connecting shaft 14, such as Figure 4 As shown, the planetary gear 132 is disposed between the internal gear 133 and the sun gear 131 and meshes with the internal gear 133 and the sun gear 131 respectively. The planetary gear 132 is sleeved on the peripheral wall of the first end of the torsion spring 15 , and the torsion spring 15 rotates with the rotation of the planetary gear 132 .

[0044] The first housing 111 rotates, driving the internal gear 133 to rotate, the internal gear 133 drives the planetary gear 132 to rotate, the planetary gear 132 drives the sun gear 131 to rotate, and then drives the connecting shaft 14 connected to the sun gear 131 and the second housing assembly 12 to rotate; during the rotation process, the torsion spring 15 rotates with the rotation of the planetary gear 132, and the torsion force of the torsion spring 15 remains basically unchanged, so as to maintain a good hand feel during the rotation process.

[0045] The first housing assembly 11 in this embodiment further includes a first shaft body 112 and an annular shaft body 113. The side wall of the first shaft body 112 is disposed between the internal gear 133 and the inner wall of the first housing 111. The annular shaft body 113 is disposed on the internal gear 133, and the annular shaft body 113 cooperates with the bottom surface of the first shaft body 112 to limit the internal gear 133.

[0046] Reference Figures 5 to 7 , the first shaft body 112 is of a cylindrical structure and has a cylindrical wall and a bottom. The cylindrical wall of the first shaft body 112 is clamped inside the first housing 111, and the internal gear 133 is clamped on the first shaft body 112. That is, the first shaft body 112 is disposed between the first housing 111 and the internal gear 133, and the internal gear 133 is connected to the first housing 111 through the first shaft body 112. The annular shaft body 113 is disposed inside the first shaft body 112, and the outer wall surface of the annular shaft body 113 fits with the inner wall surface of the first shaft body 112. The annular shaft body 113 presses on the internal gear 133, and the annular shaft body 113 matches with the bottom surface of the first shaft body 112 to limit the position of the internal gear 133 and prevent the internal gear 133 from moving during transmission.

[0047] The second housing 121 provided in this embodiment includes a second housing 121 and a second shaft body 122. The second shaft body 122 is disposed inside the second housing 121, and the second shaft body 122 is docked with the annular shaft body 113 to form a second accommodation cavity. The torsion spring 15 is located in the second accommodation cavity. A through hole 1221 is further provided at the top of the second shaft body 122, and the second end of the torsion spring 15 is rotatably disposed in the through hole 1221.

[0048] Reference Figure 4 、 Figure 6 and Figure 7 , the second shaft body 122 is clamped to the second housing 121, and a limiting cylinder is further provided inside the second shaft body 122 for limiting the connecting shaft 14. The connecting shaft 14 can pass through the limiting cylinder and be connected to the first shaft body 112. The second shaft body 122 is docked with the annular shaft body 113 to form a second accommodation cavity, and both the torsion spring 15 and the connecting shaft 14 are located in the second accommodation cavity.

[0049] Further, a through hole 1221 is further provided at the top of the second shaft body 122, and the second end of the torsion spring 15 is embedded in the through hole 1221, and the second end of the torsion spring 15 can rotate in the through hole 1221. A mounting hole is also correspondingly provided on the bottom surface of the first shaft body 112. The planetary gear 132 is sleeved on the first end of the torsion spring 15. That is, the first end of the torsion spring 15 is inserted and connected to the center of the planetary gear 132 and can pass through the center of the planetary gear 132 and be inserted into the mounting hole.

[0050] The bottom surface of the first shaft body 112 is further provided with an annular limiting groove for restricting the movement track of the planetary gear 132. In this embodiment, according to the preset torque of the torsion spring 15, the annular limiting groove is set, that is, the annular limiting groove is set at the position corresponding to the angle when the torque of the torsion spring 15 reaches the preset torque. After the preset torque is set, the planetary gear 132 can only run in one direction and cannot run in the reverse direction, and the torque of the torsion spring 15 will not decrease, ensuring the preset torque of the torsion spring 15.

[0051] Reference Figure 7 , during the installation process, the first end of the torsion spring 15 passes through the center of the planetary gear 132 and is embedded in the installation hole on the bottom surface of the first shaft body 112. Rotate the first housing 111 or the second housing 121, and the torsion spring 15 rotates accordingly. The larger the torsion angle, the linearly increasing the torque of the torsion spring 15. When the torque of the torsion spring 15 reaches the preset torque, the first end of the torsion spring 15 is pushed out of the installation hole, that is, the first end of the torsion spring 15 is only embedded in the center of the planetary gear 132, and the second end of the torsion spring 15 rotates in the through hole. The planetary gear 132 is embedded in the annular limiting groove. At this time, the planetary gear 132 can only rotate in one direction, and the torque of the torsion spring 15 will no longer increase and remains at the maximum value.

[0052] The rotating joint 10 provided in this embodiment further includes an elastic member 16, a fastener 17, and a first gasket 18. The elastic member 16 and the first gasket 18 are sequentially arranged between the fastener 17 and the second shaft body 122, and the fastener 17 abuts against the elastic member 16.

[0053] Reference Figure 4 、 Figure 6 and Figure 7 , an elastic member 16 is provided between the fastener 17 and the second shaft body 122. The elastic member 16 is annular and sleeved on the connecting shaft 14, outside the second shaft body 122. The elastic member 16 has an outer ring abutting against the fastener 17 and an inner ring abutting against the first shaft body 112. The outer ring and the inner ring are in different planes. The fastener 17 can cause the elastic member 16 to generate elastic deformation along the axial direction of the second shaft body 122 (the extending direction of the connecting shaft 14). The elastic member 16 is configured to always generate an elastic force on the fastener 17, that is, to generate a pressure between the fastener 17 and the second shaft body 122, and this pressure can be converted into static friction.

[0054] Further, a first gasket 18 is further provided between the elastic member 16 and the second shaft body 122. The first gasket 18 is sleeved on the connecting shaft 14 and is outside the second shaft body 122. During the rotation of the first housing 111 relative to the second housing 121, frictions are generated on both sides of the first gasket 18, forming a friction damping structure.

[0055] The fastener 17 in this embodiment includes a fixing nut.

[0056] The rotating joint 10 further includes a second gasket 19. A second gasket 19 is provided between the end of the connecting shaft 14 and the bottom surface of the first shaft body 112, and between the sun gear 131 and the bottom surface of the first shaft body 112. Friction surfaces are formed on both sides of the second gasket 19.

[0057] The second housing assembly 12 provided in this embodiment further includes a limiting member 125. The limiting member 125 is sleeved and connected to the connecting shaft 14, and the limiting member 125 and the bottom surface of the first shaft body 112 cooperate to limit the sun gear 131.

[0058] The second housing assembly 12 includes a second housing 121, a second shaft body 122, a limiting cylinder and a limiting member 125. The second shaft body 122 is provided in the second housing 121, the limiting cylinder is provided in the second shaft body 122, and the limiting member 125 is provided at one end of the limiting cylinder close to the first shaft body 112. The connecting shaft 14 passes through the limiting cylinder and the limiting member 125 in sequence, and a sun gear 131 is sleeved at the bottom of the connecting shaft. The sun gear 131 is located in the first shaft body 112 and between the limiting member 125 and the bottom surface of the first shaft body 112. The limiting member 125 and the bottom surface of the first shaft body 112 cooperate to limit the sun gear 131 sleeved and connected to the connecting shaft 14, preventing the sun gear 131 from moving along the extension direction of the connecting shaft 14 during rotation.

[0059] The second shaft body 122, the limiting cylinder and the limiting member 125 in this embodiment can be integrally formed.

[0060] The first housing assembly 11 provided in this embodiment further includes a first end cover 115. The first end cover 115 covers the end face of the first housing 111 to protect the components in the first housing 111; the second housing assembly 12 further includes a second end cover 123. The second end cover 123 covers the end face of the second housing 121 to protect the components in the second housing 121.

[0061] The first housing assembly 11 provided in this embodiment further includes a first mounting member 114, which is disposed on the outer wall surface of the first housing 111 and is used to connect with a first rotating member, such as a connecting arm; the first mounting member 114 extends from the outer side surface of the first housing 111 to the outer side surface of the second housing 121 along the axial direction, and the first mounting member 114 can fit with the outer wall surface of the second housing; the second housing assembly 12 further includes a second mounting member 124, which is disposed on the outer wall surface of the second housing 121, and the second mounting member 124 can fit with the outer wall surface of the second housing; 124 is used to connect with the second rotating member, such as a connecting arm; and the second mounting member 124 extends axially from the outer side surface of the second shell 121 toward the outer side surface of the first shell 111; that is, when the first shell 111 and the second shell 121 rotate with each other, the second mounting member 124 and the first mounting member 114 can rotate relative to each other, and the first mounting member 114 and the second mounting member 124 interfere with each other, thereby limiting the relative rotation angle of the first shell 111 and the second shell 121, and preventing infinite rotation between the first shell 111 and the second shell 121.

[0062] In one embodiment, the first mounting member 114 is used to connect with the first connecting arm 20, the second mounting member 124 is used to connect with the second connecting arm 30, and the first connecting arm 20 is connected with the lamp body 40. In this embodiment, the preset torque of the torsion spring 15 can be set as needed, and the bottom surface of the first shaft body 112 is set with an annular limit groove according to the preset torque. For example, the first connecting arm 20 can be rotated upward by 20° and downward by 90° starting from the horizontal position relative to the second connecting arm 30, and the annular limit groove limits the running track of the planetary gear 132.

[0063] The rotation angle in this embodiment is not specifically limited, and the preset torque of the torsion spring 15 and the annular limiting groove on the bottom surface of the first shaft body 112 can be set according to actual needs.

[0064] In the present embodiment, the rotating joint uses friction damping and a torsion spring 15 to provide torque, and transmission is achieved through a planetary gear assembly. During the rotation process, the torsion spring 15 rotates along with the rotation of the first shell 111, providing a good hand feel without warping.

[0065] This embodiment also provides a desk lamp, comprising a lamp body 40 and a support arm; the lamp body 40 is connected to the support arm, the support arm comprises a plurality of connecting arms, and two adjacent connecting arms among the plurality of connecting arms are connected by a rotating joint 10 in any of the above embodiments.

[0066] refer to Figure 8, the support arm includes two connecting arms, namely the first connecting arm 20 and the second connecting arm 30. A rotating joint 10 is provided between the first connecting arm 20 and the second connecting arm 30. Specifically, the first connecting arm 20 is connected to the first housing assembly 11 through the first mounting member 114, the second connecting arm 30 is connected to the second housing assembly 12 through the second mounting member 124, the first connecting arm 20 is connected to the lamp body 40, the second connecting arm 30 is connected to the base, and the first connecting arm 20 and the second connecting arm 30 can rotate relative to each other around the connecting shaft 14. On the basis that the second connecting arm 30 does not rotate, the first connecting arm 20 can drive the lamp body 40 to adjust the illumination angle.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this embodiment, rather than to limit it; although the present embodiment has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of this embodiment.

Claims

1. A rotating joint, characterized in that, Comprising: A first housing assembly (11), a second housing assembly (12), a planetary gear assembly, a connecting shaft (14), and a torsion spring (15). The first housing assembly (11) and the second housing assembly (12) are docked through the connecting shaft (14) to form a first accommodation cavity. The planetary gear assembly is disposed within the first housing (111) assembly (11) and is connected to the second housing assembly (12). The torsion spring (15) is sleeved on the connecting shaft (14), and the first end of the torsion spring (15) is connected to the planetary gear assembly, and the second end of the torsion spring (15) is rotatably connected to the second housing assembly (12). When the first housing assembly (11) rotates, the planetary gear assembly drives the second housing assembly (12) to rotate.

2. The rotating joint according to claim 1, characterized in that, The first housing assembly (11) includes a first housing (111). The planetary gear assembly includes a sun gear (131), a planetary gear (132), and an internal gear (133). The internal gear (133) is fixedly disposed within the first housing (111). The sun gear (131) is sleeved on the peripheral wall of the connecting shaft (14). The planetary gear (132) is disposed between the internal gear (133) and the sun gear (131) and meshes with the internal gear (133) and the sun gear (131) respectively. The planetary gear (132) is sleeved on the peripheral wall of the first end of the torsion spring (15).

3. The rotating joint according to claim 2, characterized in that, The first housing assembly (11) further includes a first shaft body (112) and an annular shaft body (113). The side wall of the first shaft body (112) is disposed between the internal gear (133) and the inner wall of the first housing (111). The annular shaft body (113) is disposed on the internal gear (133), and the annular shaft body (113) cooperates with the bottom surface of the first shaft body (112) to limit the internal gear (133).

4. The rotating joint according to claim 3, characterized in that, The second housing assembly (12) includes a second housing (121) and a second shaft body (122). The second shaft body (122) is disposed within the second housing (121), and the second shaft body (122) and the annular shaft body (113) are docked to form a second accommodation cavity. The torsion spring (15) is located within the second accommodation cavity. A through hole (1221) is further provided at the top of the second shaft body (122), and the second end of the torsion spring (15) is rotatably disposed within the through hole (1221).

5. The rotating joint according to claim 4, characterized in that, The rotating joint further includes an elastic member (16), a fastener (17), and a first gasket (18). The elastic member (16) and the first gasket (18) are sequentially disposed between the fastener (17) and the second shaft body (122), and the fastener (17) abuts against the elastic member (16).

6. The rotating joint according to claim 3, characterized in that, The rotating joint further includes a second gasket (19). The second gasket (19) is provided between the end of the connecting shaft (14) and the bottom surface of the first shaft body (112) and between the sun gear (131) and the bottom surface of the first shaft body (112).

7. The rotating joint according to claim 3, characterized in that, The second housing assembly (12) further includes a limiting member (125). The limiting member (125) is sleeved and connected to the connecting shaft (14), and the limiting member (125) cooperates with the bottom surface of the first shaft body (112) to limit the sun gear (131).

8. The rotating joint according to claim 4, characterized in that, The first housing (111) assembly (11) further includes a first end cover (115). The first end cover (115) covers the end face of the first housing (111); the second housing assembly (12) further includes a second end cover (123). The second end cover (123) covers the end cover of the second housing (121).

9. The rotating joint according to claim 4, characterized in that, The first housing assembly (11) further includes a first mounting member (114). The first mounting member (114) is disposed on the outer wall surface of the first housing (111). The first mounting member (114) is used to connect to a first member to be rotated; the second housing assembly (12) further includes a second mounting member (124). The second mounting member (124) is disposed on the outer wall surface of the second housing (121). The second mounting member (124) is used to connect to a second member to be rotated.

10. A table lamp, characterized in that, Comprising: A lamp body and a support arm; The lamp body is connected to the support arm. The support arm includes a plurality of connecting arms, and two adjacent ones of the plurality of connecting arms are connected by a rotating joint (10) according to any one of claims 1 to 9.

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