Joint assembly and lighting device

Abstract

The invention provides a joint assembly and lighting equipment. The joint assembly comprises a fixing assembly and a connecting assembly, one end of the joint rod is connected with the fixing assembly, and the joint rod can rotate to a preset angle relative to the fixing assembly with the axis of the joint rod as the axis; a spherical groove is formed in the to-be-rotated part, a ball head is arranged at the other end of the joint rod, and the ball head is installed in the spherical groove, matched with the spherical groove and capable of rotating relative to the spherical groove with the first axis and the second axis as axes; and the wiring channel penetrates through the joint rod and the ball head in the axial direction of the joint rod and is used for wiring. According to the joint assembly provided by the invention, the limiting ball head can rotate in two directions, and the joint rod can rotate by taking the axis of the joint rod as the axis, so that the to-be-rotated part can rotate in three directions, and the use requirements of a user are met. And meanwhile, the problem that when the joint rod continuously rotates without angle limitation, the wire harness in the wiring channel is prone to being twisted can be solved.

Description

Technical Field

[0001] The present invention relates to the field of lighting technology, and in particular to a joint component and lighting equipment. Background Art

[0002] At present, in the field of desk lamp products, desk lamps with ball joint shafts generally have some design defects. The rotation angle is usually not limited. When the lamp head is in a state of continuous rotation without angle restriction, the wire harness inside the lamp head is prone to twisting. With excessive rotation accumulation, the lamp head harness will be damaged, which will cause the desk lamp product to fail to light up, seriously affecting the normal use and life of the product.

[0003] In addition, for table lamps with universal shafts, there are major problems with their wiring. Generally, the wires need to be routed around the center of the universal shaft, which requires the use of thicker braided wires. In this way, not only is the overall appearance of the table lamp destroyed, the product's aesthetics are greatly reduced, but it also increases production and material costs, which is not conducive to improving the product's competitiveness and promotion and application in the market.

[0004] Therefore, how to design a joint assembly that can prevent the wiring harness from being twisted and can set the wiring harness at the center of the shaft to reduce costs and improve aesthetics has become a problem that needs to be solved urgently. Summary of the invention

[0005] The present invention aims to at least solve the problem that the lamp cap wiring harness is prone to tangling.

[0006] To this end, a first aspect of the present invention provides a joint assembly.

[0007] A second aspect of the present invention provides a lighting device.

[0008] In view of this, the first aspect of the present invention proposes a joint assembly, comprising: a fixing assembly; a joint rod, one end of which is connected to the fixing assembly and can be rotated to a preset angle relative to the fixing assembly with the axis of the joint rod as the axis; a part to be rotated, a spherical groove is provided on the part to be rotated, and a ball head is provided at the other end of the joint rod, the ball head is installed in the spherical groove, is adapted to the spherical groove, and can be rotated relative to the spherical groove with the first axis and the second axis as the axis; a wiring channel, which passes through the joint rod and the ball head along the axial direction of the joint rod and is used for wiring.

[0009] The joint assembly provided by the present invention includes a fixed assembly, a joint rod and a part to be rotated, one end of the joint rod is connected to the fixed assembly, and can be rotated to a preset angle relative to the fixed assembly with the axis of the joint rod as the axis. A spherical groove is provided on the part to be rotated, and a ball head is provided at the other end of the joint rod. The ball head is installed in the spherical groove and adapted to the spherical groove, so that the ball head can be rotated relative to the spherical groove with the first axis and the second axis as the axis. The joint rod and the ball head are provided with wiring channels, which can be used for wiring, so that the electronic components on the fixed assembly can be connected to the electronic components on the part to be rotated through the wiring channels. It can be understood that by limiting the ball head to be able to rotate in two directions, and the joint rod to be able to rotate with the axis of the joint rod as the axis, it is achieved that the part to be rotated can be rotated in three directions, thereby meeting the user's usage requirements. At the same time, since the joint rod rotates with the axis of the joint rod as the axis, and the rotating part can rotate in three directions, the first axis and the second axis are the axes other than the axis of the joint rod, that is, the ball head cannot rotate with the axis of the joint rod as the axis, so as to prevent the problem of wire tangling in the wiring channel when the joint rod is in a state of continuous rotation without angle restriction. In addition, since the joint rod can rotate to a preset angle, and the preset angle can be set, the rotating part does not rotate without angle restriction when rotating through the joint rod, and the problem of wire tangling can also be avoided.

[0010] The joint assembly provided according to the present invention may also have the following additional technical features:

[0011] In some embodiments, optionally, the part to be rotated may be the lamp itself, or a connecting part used to connect the lamp.

[0012] In some embodiments, optionally, the joint rod and the ball head are an integrated structure.

[0013] In some embodiments, optionally, any two of the first axis, the second axis, and the axis of the joint rod are perpendicular to each other.

[0014] In these embodiments, the first axis, the second axis, and the axis of the joint rod can be set so that any two of them are perpendicular to each other, so that when adjusting the angle of the part to be rotated, the perpendicularity of the axes can provide a clear and stable rotation path for the part to be rotated, and achieve precise angle positioning. The user can more easily and accurately adjust the part to be rotated to the desired direction and angle, greatly improving the user experience. Among them, this setting of any two being perpendicular to each other is similar to the setting of the X, Y, and Z axes, the first axis is the X axis, the second axis is the Z axis, and the axis of the joint rod is the Y axis.

[0015] In some embodiments, optionally, the fixing assembly includes a shell, and the joint assembly further includes: a mounting hole, which is arranged in the shell, and the shell can be connected to the inside and outside through the mounting hole, and one end of the joint rod is installed in the mounting hole.

[0016] In these embodiments, the fixing assembly includes a shell, and a mounting hole is arranged on the shell. The shell can realize the connection between the internal space and the external space through the mounting hole. One end of the joint rod is installed in the mounting hole, so that the routing channel can be connected with the internal space of the shell through one end of the joint rod to realize the routing of the wiring harness.

[0017] In some embodiments, optionally, a step is provided on the joint rod, and the other end of the joint rod can be passed through the mounting hole, and the outside of the shell is abutted against the step, and then a nut is screwed on the joint rod inside the shell, thereby achieving the connection between the shell and the joint rod.

[0018] In some embodiments, optionally, the joint assembly further includes a first gasket set, which is disposed on the joint rod, and two ends of the first gasket set are respectively abutted against the housing and the nut.

[0019] In some embodiments, optionally, the first gasket set includes one flat gasket and two bowl-shaped gaskets.

[0020] In some embodiments, optionally, the joint assembly further includes a second shim set, which is disposed on the joint rod, and two ends of the second shim set are respectively in contact with the housing and the step.

[0021] In some embodiments, optionally, the second shim set includes flat shims.

[0022] In some embodiments, optionally, the joint assembly further includes: a first limiting protrusion, which is disposed at one end of the joint rod and is located between the inner wall of the mounting hole and the joint rod, and is used to cooperate with the mounting hole to limit the joint rod to a preset angle.

[0023] In these embodiments, a first limiting protrusion can be provided at one end of the joint rod, and the first limiting protrusion is provided between the inner wall of the mounting hole and the joint rod, so that the first limiting protrusion can cooperate with the mounting hole to achieve the limit of the rotation angle of the joint rod, thereby ensuring that the joint rod will not rotate without limit, thereby avoiding the problem of twisted wire. Specifically, a third limiting protrusion can be provided on the inner wall of the mounting hole, and the third limiting protrusion cooperates with the first limiting protrusion to achieve the limit. Or a groove is provided inside the mounting hole along the circumference of the mounting hole, and the third limiting protrusion is limited by the groove. Or the mounting hole is set in the form of a step along the circumference of the mounting hole, that is, along the circumference of the mounting hole, the inner diameter of some mounting holes is set to be smaller, which cooperates with the joint rod, and the inner diameter of another part of the mounting hole is set to be larger, so that a step structure is formed, so that when the first limiting protrusion cooperates with the mounting hole with a larger inner diameter, the step formed by the mounting hole with a larger inner diameter and the mounting hole with a smaller inner diameter can be used for limiting.

[0024] In some embodiments, optionally, the joint rod is an axis rod, and the mounting hole includes a mounting portion and a matching portion arranged along the circumference of the mounting hole, the diameter of the mounting portion is smaller than the diameter of the matching portion, a partial circumferential surface of the joint rod is adapted to the inner wall surface of the mounting portion, and the side of the first limiting protrusion away from the joint rod is adapted to the inner wall surface of the matching portion.

[0025] In these embodiments, the mounting hole includes a mounting portion and a matching portion arranged along the circumference of the mounting hole, and the diameter of the mounting portion is smaller than the diameter of the matching portion, so that a step structure is formed in the circumferential direction of the mounting hole, so that when the joint rod is set as a shaft rod, part of the circumferential surface of the joint rod can be matched with the inner wall surface of the mounting portion, and the side of the first limiting protrusion away from the joint rod can be matched with the inner wall surface of the matching portion, so as to limit the position through the formed step. This limiting method does not require additional components, so it can save costs, and because the formed step and the shell are an integral structure, it is more stable when limiting the joint rod.

[0026] In some embodiments, optionally, the joint assembly also includes: a limit groove, arranged on the ball head; a second limit protrusion, arranged in the spherical groove, for cooperating with the limit groove so that the ball head can rotate relative to the spherical groove with the first axis and the second axis as the axis.

[0027] In these embodiments, a limiting groove can be provided on the ball head, and a second limiting protrusion can be provided in the spherical groove, so that the limiting of the ball head can be achieved through the cooperation of the limiting groove and the second limiting protrusion, so that the ball head can only rotate around the first axis and the second axis. This setting accurately controls the rotation of the ball head around the first axis and the second axis through the limiting groove and the second limiting protrusion, avoids the uncontrolled and arbitrary rotation of the joint rod, and prevents the wiring harness from being twisted or damaged due to excessive torsion. This not only ensures the electrical connection stability of the device, but also improves the overall reliability and service life of the device.

[0028] In some embodiments, optionally, the limiting groove extends on the ball head along the axial direction of the joint rod, and along the circumferential direction of the joint rod, the limiting groove and the second limiting protrusion are clearance-fitted.

[0029] In these embodiments, the limit groove can be set to extend along the axial direction of the joint rod on the ball head, so that the ball head can be limited to rotate with the axis of the joint rod as the axis, ensuring that the wire harness runs stably in the normal working space, reducing the occurrence of problems such as twisting and breaking caused by excessive force on the wire harness. At the same time, along the circumferential direction of the joint rod, the limit groove and the second limit protrusion are clearance-matched, so that the ball head can rotate more smoothly and flexibly with the first axis and the second axis as the axis, avoiding the jamming phenomenon caused by too tight fit, ensuring that the user has a smooth operating feel when adjusting the angle of the part to be rotated, and can accurately and easily adjust the part to be rotated to any desired angle, greatly improving the user experience.

[0030] In some embodiments, optionally, the number of the limiting grooves is two, the two limiting grooves are symmetrically arranged on the ball head, the number of the second limiting protrusions is the same as the number of the limiting grooves, and each limiting groove cooperates with a second limiting protrusion.

[0031] In these embodiments, the number of limit grooves can be set to two, and the two limit grooves can be symmetrically arranged on the ball head, so that the restraining force on the ball head during rotation can be evenly distributed, avoiding the local wear between the ball head and the spherical groove or the occurrence of sticking due to excessive force on one side, effectively extending the service life of the joint assembly, and ensuring the stability and reliability of the angle adjustment function of the equipment during long-term use.

[0032] In some embodiments, optionally, the part to be rotated includes: a rotating seat, on which a first hemispherical accommodating cavity is provided; an end cover, mounted on the rotating seat, on which a second hemispherical accommodating cavity is provided, and the first hemispherical accommodating cavity and the second hemispherical accommodating cavity form a spherical groove.

[0033] In these embodiments, the fixing assembly can be configured in the form of a rotating seat plus an end cap, a first hemispherical accommodating cavity is configured on the rotating seat, and a second hemispherical accommodating cavity is configured on the end cap, and a spherical groove is formed by the first hemispherical accommodating cavity and the second hemispherical accommodating cavity. This configuration is conducive to the installation of the ball head. When installing the ball head, the rotating seat and the end cap can be separated, the ball head can be set in the first hemispherical accommodating cavity, and then the end cap can be fixed on the rotating seat so that the second hemispherical accommodating cavity is buckled with the first hemispherical accommodating cavity. In a specific implementation, a certain gap can be reserved between the end cap and the rotating seat, so as to facilitate the adjustment of the tightness of the ball head in the spherical groove.

[0034] In some embodiments, optionally, a screw column is provided on the rotating seat, a fixing hole is provided on the end cover, the end cover is placed on the screw column through the fixing hole, and then the end cover is locked on the rotating seat with a screw.

[0035] In some embodiments, optionally, the second limiting protrusion is disposed in the second hemisphere accommodating cavity.

[0036] In these embodiments, the second limiting protrusion can be set in the second hemisphere accommodating cavity. In this way, when installing the ball head, the ball head can be placed in the first hemisphere accommodating cavity first, and then the second limiting protrusion can be aligned with the limiting groove for installation. This installation method can effectively improve the installation efficiency.

[0037] In some embodiments, optionally, the second hemispherical receiving cavity is surrounded by a plurality of arc-shaped portions arranged at intervals.

[0038] In these embodiments, the multiple arc-shaped portions arranged at intervals make the second hemisphere receiving cavity have better structural flexibility, and can ensure that the ball head has a certain degree of mobility while ensuring that the ball head is stable and not loose, so as to facilitate the user to adjust the direction. Moreover, compared with the integrated closed structure, it can better accommodate the size differences of components caused by factors such as manufacturing tolerances, which helps to improve the overall assembly success rate of the desk lamp and its reliability in actual use.

[0039] In some embodiments, optionally, the preset angle is greater than 0° and less than 180°.

[0040] In some embodiments, optionally, the preset angle is greater than or equal to 45° and less than or equal to 145°.

[0041] In some embodiments, optionally, the preset angle is 90°.

[0042] In some embodiments, optionally, the preset angle is 120°.

[0043] In some embodiments, optionally, the preset angle is 145°.

[0044] A second aspect of the present invention provides a lighting device, comprising: a joint assembly as in any technical solution of the first aspect.

[0045] The lighting device provided by the present application includes the joint assembly in any technical solution of the first aspect. Since the lighting device provided by the present application includes the joint assembly in any technical solution of the first aspect, the lighting device provided by the present application also has all the beneficial effects of the joint assembly in any technical solution of the first aspect, which will not be repeated here.

[0046] In some embodiments, optionally, the lighting device includes a desk lamp, a chandelier, etc.

[0047] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0049] Figure 1 A schematic structural diagram of a joint assembly according to an embodiment of the present invention is shown;

[0050] Figure 2 A schematic structural diagram of a joint rod according to an embodiment of the present invention is shown;

[0051] Figure 3 A schematic diagram showing the structure of an end cover according to an embodiment of the present invention is shown;

[0052] Figure 4 An exploded view of a joint assembly according to one embodiment of the present invention is shown;

[0053] Figure 5 A partial enlarged view of the structure of a joint assembly according to an embodiment of the present invention is shown.

[0054] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0055] 1 joint assembly, 10 fixing assembly, 102 shell, 104 mounting hole, 1042 mounting portion, 1044 matching portion, 11 joint rod, 112 ball head, 1122 limiting groove, 114 first limiting protrusion, 12 to be rotated, 122 spherical groove, 1222 second limiting protrusion, 1224 first hemispherical accommodating cavity, 1226 second hemispherical accommodating cavity, 124 rotating seat, 1242 screw column, 126 end cover, 1262 arc portion, 1264 fixing hole, 13 wiring channel, 14 nut, 15 bowl-shaped gasket, 16 flat gasket, 17 screw. DETAILED DESCRIPTION

[0056] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0057] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0058] Refer to the following Figures 1 to 5 A joint assembly and a lighting device according to some embodiments of the present invention are described.

[0059] According to an embodiment of the first aspect of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the first aspect of the present invention proposes a joint assembly 1, including a fixed assembly 10, a joint rod 11 and a part to be rotated 12. One end of the joint rod 11 is connected to the fixed assembly 10, and can be rotated to a preset angle relative to the fixed assembly 10 with the axis of the joint rod 11 as the axis. A spherical groove 122 is provided on the part to be rotated 12, and a ball head 112 is provided at the other end of the joint rod 11. The ball head 112 is installed in the spherical groove 122, is adapted to the spherical groove 122, and can be rotated relative to the spherical groove 122 with the first axis and the second axis as the axis. The wiring channel 13 is arranged along the axial direction of the joint rod 11 and passes through the joint rod 11 and the ball head 112 for wiring.

[0060] The joint assembly 1 provided by the present invention comprises a fixed assembly 10, a joint rod 11 and a part to be turned 12, one end of the joint rod 11 is connected to the fixed assembly 10, and can be rotated to a preset angle relative to the fixed assembly 10 with the axis of the joint rod 11 as the axis. A spherical groove 122 is provided on the part to be turned 12, and a ball head 112 is provided on the other end of the joint rod 11. The ball head 112 is installed in the spherical groove 122 and is adapted to the spherical groove 122, so that the ball head 112 can be rotated relative to the spherical groove 122 with the first axis and the second axis as the axis. A wiring channel 13 is provided on the joint rod 11 and the ball head 112, which can be used for wiring, so that the electronic components on the fixed assembly 10 can be connected to the electronic components on the part to be turned 12 through the wiring channel 13. It can be understood that by limiting the ball head 112 to be able to rotate in two directions, and the joint rod 11 to be able to rotate with the axis of the joint rod 11 as the axis, the rotation of the part to be turned 12 in three directions is realized, thereby meeting the user's use requirements. At the same time, since the joint rod 11 rotates with the axis of the joint rod 11 as the axis, and the rotating part 12 can rotate in three directions, the first axis and the second axis are the axes other than the axis of the joint rod 11, that is, the ball head 112 cannot rotate with the axis of the joint rod 11 as the axis, so as to prevent the wire harness inside the wiring channel 13 from getting tangled when the joint rod 11 is in continuous rotation without angle restriction. In addition, since the joint rod 11 can rotate to a preset angle, and the preset angle can be set, the rotating part 12 does not rotate without angle restriction when it rotates through the joint rod 11, and the problem of tangled wires can also be avoided.

[0061] In some embodiments, optionally, the component to be rotated 12 may be a lamp itself, or a connecting component for connecting a lamp.

[0062] In some embodiments, optionally, the joint rod 11 and the ball head 112 are an integrated structure.

[0063] In some embodiments, optionally, any two of the first axis, the second axis, and the axis of the joint rod 11 are perpendicular to each other.

[0064] In these embodiments, the first axis, the second axis, and the axis of the joint rod 11 can be set so that any two of them are perpendicular to each other, so that when adjusting the angle of the rotating part 12, the perpendicularity of the axes can provide a clear and stable rotation path for the rotating part 12, and achieve precise angle positioning. The user can more easily and accurately adjust the rotating part 12 to the desired direction and angle, which greatly improves the user experience. Among them, this setting of any two being perpendicular to each other is similar to the setting of the X, Y, and Z axes, the first axis is the X axis, the second axis is the Z axis, and the axis of the joint rod 11 is the Y axis.

[0065] Among them, Figure 1 As shown, the first axis may be in the left-right direction, and the second axis may be in the direction perpendicular to the paper surface.

[0066] In some embodiments, optionally, the fixing assembly 10 includes a shell 102 , and the joint assembly 1 further includes: a mounting hole 104 , which is disposed in the shell 102 , and the shell 102 can be connected to the inside and outside through the mounting hole 104 , and one end of the joint rod 11 is installed in the mounting hole 104 .

[0067] In these embodiments, the fixing assembly 10 includes a shell 102, and a mounting hole 104 is provided on the shell 102. The shell 102 can realize the connection between the internal space and the external space through the mounting hole 104. One end of the joint rod 11 is installed in the mounting hole 104. In this way, the wiring channel 13 can be connected with the internal space of the shell 102 through one end of the joint rod 11 to realize the routing of the wiring harness.

[0068] In some embodiments, optionally, a step is provided on the joint rod 11, and the other end of the joint rod 11 can be passed through the mounting hole 104, and the outside of the shell 102 is abutted against the step, and then the nut 14 is screwed on the joint rod 11 inside the shell 102, thereby realizing the connection between the shell 102 and the joint rod 11.

[0069] In some embodiments, optionally, the joint assembly 1 further includes a first gasket set, which is disposed on the joint rod 11 , and two ends of the first gasket set are respectively in contact with the housing 102 and the nut 14 .

[0070] In some embodiments, optionally, the first gasket set includes one flat gasket 16 and two bowl-shaped gaskets 15 .

[0071] In some embodiments, optionally, the joint assembly 1 further includes a second shim set, which is disposed on the joint rod 11 , and two ends of the second shim set are respectively in contact with the housing 102 and the step.

[0072] In some embodiments, optionally, the second shim set includes flat washers 16 .

[0073] In some embodiments, optionally, the joint assembly 1 also includes: a first limiting protrusion 114, which is arranged at one end of the joint rod 11 and is located between the inner wall of the mounting hole 104 and the joint rod 11, and is used to cooperate with the mounting hole 104 to limit the joint rod 11 to a preset angle.

[0074] In these embodiments, a first limiting protrusion 114 can be provided at one end of the joint rod 11, and the first limiting protrusion 114 can be provided between the inner wall of the mounting hole 104 and the joint rod 11, so that the first limiting protrusion 114 can cooperate with the mounting hole 104 to limit the rotation angle of the joint rod 11, thereby ensuring that the joint rod 11 will not rotate without limit, thereby avoiding the problem of twisted wire. Specifically, a third limiting protrusion can be provided on the inner wall of the mounting hole 104, and the third limiting protrusion cooperates with the first limiting protrusion 114 to achieve limiting. Alternatively, a groove is provided inside the mounting hole 104 along the circumference of the mounting hole 104, and the third limiting protrusion is limited by the groove. Alternatively, the mounting hole 104 is arranged in the form of a step along the circumference of the mounting hole 104, that is, along the circumference of the mounting hole 104, the inner diameter of some mounting holes 104 is arranged to be smaller to cooperate with the joint rod 11, and the inner diameter of another part of the mounting hole 104 is arranged to be larger, thus forming a step structure, so that when the first limiting protrusion 114 is matched with the mounting hole 104 with a larger inner diameter, the step formed by the mounting holes 104 with a larger inner diameter and a smaller inner diameter can be used for limiting.

[0075] In some embodiments, the joint rod 11 is optionally a shaft rod, and the mounting hole 104 includes a plurality of holes along the circumference of the mounting hole 104 (eg, Figure 5 The mounting portion 1042 and the matching portion 1044 are arranged in the direction indicated by B in the figure, the diameter of the mounting portion 1042 is smaller than the diameter of the matching portion 1044, the partial circumferential surface of the joint rod 11 is matched with the inner wall surface of the mounting portion 1042, and the side of the first limiting protrusion 114 away from the joint rod 11 is matched with the inner wall surface of the matching portion 1044.

[0076] In these embodiments, the mounting hole 104 includes a mounting portion 1042 and a matching portion 1044 arranged along the circumference of the mounting hole 104, and the diameter of the mounting portion 1042 is smaller than the diameter of the matching portion 1044, so that a step structure is formed in the circumferential direction of the mounting hole 104, so that when the joint rod 11 is set as an axle rod, part of the circumferential surface of the joint rod 11 can be matched with the inner wall surface of the mounting portion 1042, and the side of the first limiting protrusion 114 away from the joint rod 11 can be matched with the inner wall surface of the matching portion 1044, so as to limit the position through the formed step. This limiting method does not require additional components, so it can save costs, and because the formed step and the housing 102 are an integral structure, it is more stable when limiting the joint rod 11.

[0077] In some embodiments, optionally, the joint assembly 1 also includes: a limiting groove 1122, which is arranged on the ball head 112; a second limiting protrusion 1222, which is arranged in the spherical groove 122 and is used to cooperate with the limiting groove 1122 so that the ball head 112 can rotate relative to the spherical groove 122 with the first axis and the second axis as the axis.

[0078] In these embodiments, a limiting groove 1122 can be provided on the ball head 112, and a second limiting protrusion 1222 can be provided in the spherical groove 122, so that the limiting of the ball head 112 can be achieved through the cooperation of the limiting groove 1122 and the second limiting protrusion 1222, so that the ball head 112 can only rotate around the first axis and the second axis. This arrangement accurately controls the rotation of the ball head 112 around the first axis and the second axis through the limiting groove 1122 and the second limiting protrusion 1222, avoids the uncontrolled and arbitrary rotation of the joint rod 11, and prevents the wiring harness from being twisted or damaged due to excessive torsion. This not only ensures the electrical connection stability of the device, but also improves the overall reliability and service life of the device.

[0079] In some embodiments, the limiting groove 1122 is optionally formed on the ball head 112 along the axial direction of the joint rod 11 (eg Figure 2 The second limiting groove 1122 extends in the direction indicated by A in the middle, and along the circumferential direction of the joint rod 11, the limiting groove 1122 and the second limiting protrusion 1222 are clearance-matched.

[0080] In these embodiments, the limiting groove 1122 can be set to extend along the axial direction of the joint rod 11 on the ball head 112, so that the ball head 112 can be limited to rotate with the axis of the joint rod 11 as the axis, ensuring that the wire harness runs stably in a normal working space, and reducing the occurrence of problems such as tangling and breakage caused by excessive stress on the wire harness. At the same time, along the circumferential direction of the joint rod 11, the limiting groove 1122 and the second limiting protrusion 1222 are clearance-matched, so that the ball head 112 can rotate more smoothly and flexibly with the first axis and the second axis as the axis, avoiding the jamming phenomenon caused by too tight matching, ensuring that the user has a smooth operating feel when adjusting the angle of the part to be rotated 12, and can accurately and easily adjust the part to be rotated 12 to any desired angle, greatly improving the user experience.

[0081] In some embodiments, optionally, there are two limiting grooves 1122 , the two limiting grooves 1122 are symmetrically arranged on the ball head 112 , the number of second limiting protrusions 1222 is the same as the number of limiting grooves 1122 , and each limiting groove 1122 cooperates with a second limiting protrusion 1222 .

[0082] In these embodiments, the number of the limit grooves 1122 can be set to two, and the two limit grooves 1122 can be symmetrically arranged on the ball head 112, so that the restraining force on the ball head 112 during the rotation process can be evenly distributed, avoiding the local wear between the ball head 112 and the spherical groove 122 due to excessive force on one side or the occurrence of sticking, effectively extending the service life of the joint assembly 1, and ensuring the stability and reliability of the angle adjustment function of the equipment during long-term use.

[0083] In some embodiments, optionally, the rotated part 12 includes: a rotating seat, on which a first hemispherical accommodating cavity 1224 is provided; an end cover 126, which is installed on the rotating seat and on which a second hemispherical accommodating cavity 1226 is provided, and the first hemispherical accommodating cavity 1224 and the second hemispherical accommodating cavity 1226 form a spherical groove 122.

[0084] In these embodiments, the fixing assembly 10 can be configured in the form of a rotating seat plus an end cap 126, a first hemispherical accommodating cavity 1224 is provided on the rotating seat, and a second hemispherical accommodating cavity 1226 is provided on the end cap 126, and the spherical groove 122 is surrounded by the first hemispherical accommodating cavity 1224 and the second hemispherical accommodating cavity 1226. This configuration is conducive to the installation of the ball head 112. When installing the ball head 112, the rotating seat and the end cap 126 can be separated, the ball head 112 can be set in the first hemispherical accommodating cavity 1224, and then the end cap 126 can be fixed on the rotating seat so that the second hemispherical accommodating cavity 1226 is buckled with the first hemispherical accommodating cavity 1224. In a specific implementation, a certain gap can be reserved between the end cap 126 and the rotating seat, so as to facilitate the adjustment of the tightness of the ball head 112 in the spherical groove 122.

[0085] In some embodiments, optionally, a screw column 1242 is provided on the rotating seat 124, and a fixing hole 1264 is provided on the end cover 126. The end cover 126 is placed on the screw column 1242 through the fixing hole 1264, and then the end cover 126 is locked on the rotating seat 124 using the screw 17.

[0086] In some embodiments, optionally, the second limiting protrusion 1222 is disposed in the second hemisphere accommodating cavity 1226 .

[0087] In these embodiments, the second limiting protrusion 1222 can be set in the second hemisphere accommodating cavity 1226. In this way, when installing the ball head 112, the ball head 112 can be placed in the first hemisphere accommodating cavity 1224 first, and then the second limiting protrusion 1222 can be aligned with the limiting groove 1122 for installation. This installation method can effectively improve the installation efficiency.

[0088] In some embodiments, optionally, the second hemispherical receiving cavity 1226 is surrounded by a plurality of arc-shaped portions 1262 that are spaced apart.

[0089] In these embodiments, the plurality of arc-shaped portions 1262 arranged at intervals make the second hemisphere receiving cavity 1226 have better structural flexibility, and can ensure that the ball head 112 has a certain degree of mobility while ensuring that the ball head 112 is stable and not loose, so as to facilitate the user to adjust the direction. Moreover, compared with the integrated closed structure, it can better accommodate the size differences of components caused by factors such as manufacturing tolerances, which helps to improve the overall assembly success rate of the desk lamp and its reliability in actual use.

[0090] In some embodiments, optionally, the preset angle is greater than 0° and less than 180°.

[0091] In some embodiments, optionally, the preset angle is greater than or equal to 45° and less than or equal to 145°.

[0092] In some embodiments, optionally, the preset angle is 90°.

[0093] In some embodiments, optionally, the preset angle is 120°.

[0094] In some embodiments, optionally, the preset angle is 145°.

[0095] According to an embodiment of the first aspect of the present invention, taking the lamp holder as an example of the part to be rotated, a joint assembly is proposed, including an end cover, the end cover including a fixing hole, a limiting protrusion (a second limiting protrusion) and an arc surface contact portion (arc portion). The joint rod includes a ball joint (ball head), a limiting groove, a limiting point (a first limiting protrusion) and a threaded column, and the threaded column is arranged at the other end of the joint rod and can cooperate with the nut. The ball joint fixing part is placed on the lamp holder screw column through the fixing hole, and then the ball joint fixing part is locked on the lamp holder with a screw. The arc surface contact portion of the ball joint firmware is in close contact with the ball joint to generate damping to form a movable part. A flat washer is placed on the threaded column of the ball joint shaft, and after passing through the limiting hole of the lamp pole, a flat washer and two bowl-shaped gaskets are placed and tightened with a nut. When the ball joint shaft rotates along the Y axis, the limiting hole and the ball joint limiting point will limit the maximum angle of rotation. The limiting protrusion of the ball joint fixing and the limiting groove of the ball joint shaft are assembled to form a Y-axis limit. The ball joint can only move in the Z-axis and X-axis directions. The other end of the joint rod has a new Y-axis movement direction to complete the three-dimensional space movement axis, thereby realizing three-dimensional space movement. At the same time, the middle of the ball joint shaft is hollow, which is convenient for the wiring harness to be routed through the hollow middle.

[0096] The key point of the present application is that a limit point is added to the longitudinal axis of the ball joint so that the Y-axis of the ball joint cannot rotate, and a horizontal limit rotation axis is added to the ball joint column to supplement the lost Y-axis rotation function of the ball joint, thereby completing the rotation in the three-dimensional direction of space.

[0097] The present application effectively solves the problem that ordinary ball joints lack a limiting function in the Y-axis direction, which has caused frequent wire twisting in the lamp holder harness and the harness cannot be located at the center axis of the shaft because it is too thick.

[0098] A second aspect of the present invention provides a lighting device, comprising: a joint assembly as in any one of the embodiments of the first aspect.

[0099] The lighting device provided by the present application includes the joint assembly in any one of the embodiments of the first aspect. Since the lighting device provided by the present application includes the joint assembly in any one of the embodiments of the first aspect, the lighting device provided by the present application also has all the beneficial effects of the joint assembly in any one of the embodiments of the first aspect, which will not be described in detail here.

[0100] In some embodiments, optionally, the lighting device includes a desk lamp, a chandelier, etc.

[0101] In the present invention, the term "plurality" refers to two or more than two, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0102] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. 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 invention. In this specification, the schematic representation of the above terms does 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.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A joint assembly, characterized in that: include: Fixing components; A joint rod, one end of which is connected to the fixing assembly and can be rotated to a preset angle relative to the fixing assembly with the axis of the joint rod as the axis; A rotating part, wherein the rotating part is provided with a spherical groove, and the other end of the joint rod is provided with a ball head, the ball head is installed in the spherical groove, adapted to the spherical groove, and can rotate relative to the spherical groove with the first axis and the second axis as the axis; A wiring channel is provided along the axial direction of the joint rod and penetrates the joint rod and the ball head for wiring.

2. The joint assembly according to claim 1, characterized in that: Any two of the first axis, the second axis and the axis of the joint rod are perpendicular to each other.

3. The joint assembly according to claim 1, characterized in that: The fixing assembly includes a housing, and the joint assembly further includes: A mounting hole is provided in the shell, the shell can be connected to the inside and outside through the mounting hole, and one end of the joint rod is installed in the mounting hole.

4. The joint assembly according to claim 3, characterized in that: Also includes: The first limiting protrusion is arranged at one end of the joint rod and is located between the inner wall of the mounting hole and the joint rod, and is used to cooperate with the mounting hole to limit the joint rod to the preset angle.

5. The joint assembly according to claim 4, characterized in that: The joint rod is an axis rod, and the mounting hole includes a mounting portion and a matching portion arranged along the circumference of the mounting hole. The diameter of the mounting portion is smaller than the diameter of the matching portion. A partial circumferential surface of the joint rod is adapted to the inner wall surface of the mounting portion, and the side surface of the first limiting protrusion away from the joint rod is adapted to the inner wall surface of the matching portion.

6. The joint assembly according to any one of claims 1 to 5, characterized in that: Also includes: A limiting groove is arranged on the ball head; The second limiting protrusion is arranged in the spherical groove and is used to cooperate with the limiting groove so that the ball head can rotate relative to the spherical groove with the first axis and the second axis as the axis.

7. The joint assembly according to claim 6, characterized in that: The limiting groove extends on the ball head along the axial direction of the joint rod, and along the circumferential direction of the joint rod, the limiting groove and the second limiting protrusion are clearance-matched.

8. The joint assembly according to claim 6, characterized in that: The number of the limiting grooves is two, and the two limiting grooves are symmetrically arranged on the ball head. The number of the second limiting protrusions is the same as the number of the limiting grooves, and each limiting groove cooperates with one second limiting protrusion.

9. The joint assembly according to claim 6, characterized in that: The parts to be transferred include: A rotating seat, wherein a first hemispherical accommodating cavity is provided on the rotating seat; The end cover is mounted on the rotating seat, and the end cover is provided with a second hemispherical accommodating cavity. The first hemispherical accommodating cavity and the second hemispherical accommodating cavity form the spherical groove.

10. The joint assembly according to claim 9, characterized in that: The second limiting protrusion is arranged in the second hemisphere accommodating cavity.

11. The joint assembly according to claim 9, characterized in that: The second hemispherical accommodating cavity is surrounded by a plurality of arc-shaped portions arranged at intervals.

12. The joint assembly according to any one of claims 1 to 5, characterized in that: The preset angle is greater than 0° and less than 180°.

13. A lighting device, characterized in that: include: A joint assembly as claimed in any one of claims 1 to 12.

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