Pivoting mechanism and lighting lamp

Abstract

A pivoting mechanism (2) and a lighting lamp comprising the pivoting mechanism (2). The pivoting mechanism (2) comprises a first swing rod assembly (21); the first swing rod assembly (21) comprises a swing rod base (201), a swing rod component (202), and a first steering head (203); the swing rod component (202) comprises a first rod arm (204) and a second rod arm (205); two ends of the first rod arm (204) are respectively hingedly connected to the swing rod base (201) and the first steering head (203) at a first hinge point (A) and a second hinge point (D); two ends of the second rod arm (205) are respectively hingedly connected to the swing rod base (201) and the first steering head (203) at a third hinge point (B) and a fourth hinge point (C); a compensation fine tuning structure (206) is provided on the end of the second rod arm (205) close to the first steering head (203); the second rod arm (205) is hingedly connected to the first steering head (203) at the fourth hinge point (C) by means of the compensation fine tuning structure (206); a connecting port is provided on the first steering head (203); and the distance between the third hinge point (B) and the fourth hinge point (C) is adjusted by adjusting the length of the compensation fine tuning structure (206) in the axis direction of the second rod arm (205), so that the first steering head (203) rotates around the second hinge point (D) so as to maintain the orientation of the connecting port in a preset direction.

Description

Pivoting mechanism, lighting fixture

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2024103168830, filed on March 19, 2024, entitled “Pivoting mechanism, lighting fixture”, and Chinese patent application No. 2024205371365, filed on March 19, 2024, entitled “Pivoting mechanism, lighting fixture”, all of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of lighting fixtures, and in particular to a pivot mechanism and a lighting fixture. Background Art

[0004] At present, lighting fixtures have been widely used in various industries. With the increase in people's demand for the use of lighting fixtures, lighting fixtures that can freely move the position of the lamp head and rotate the angle of the lamp head have been applied. In the related art, the freedom of movement of the lamp head is mainly improved by installing a pivoting mechanism such as a rotating arm on the lamp head. A known solution is to design the rotating arm into two lever arms, the two ends of the first lever arm are respectively hinged to the first linkage element and the second linkage element, and the two ends of the second lever arm are respectively hinged to the first linkage element and the second linkage element. The four hinge points form a parallelogram so that the rotating arm can rotate around its adjacent components. Among them, the first linkage element and / or the second linkage element are provided with an electromechanical dedicated interface, which is used to establish an electrical connection with other adjacent components. However, due to the assembly errors and process tolerances between the two lever arms and the linkage elements, the electromechanical dedicated interface of at least one of the first linkage element and the second linkage element will produce a certain angle deviation after the rotating arm rotates, affecting the accuracy of the angles of other components connected to the rotating arm.

[0005] Therefore, it is necessary to provide a new technical solution to solve the above technical problems. Summary of the Invention

[0006] The present application provides a pivot mechanism and a lighting fixture to solve the problem that the rotating arm of the existing lighting fixture has assembly errors and process tolerances, which causes the electromechanical interface to have a certain angle deviation after it rotates to a certain angle, thereby affecting the accuracy of the angles of other components connected to the rotating arm.

[0007] The present application provides a pivot mechanism, comprising:

[0008] A first rocker component, the first rocker component comprising a rocker base, a rocker assembly, and a first steering head, wherein the first steering head is provided with a connecting port;

[0009] The rocker arm assembly includes a first lever arm and a second lever arm, one end of the first lever arm is hinged to the rocker arm base at a first hinge point, the other end of the first lever arm is hinged to the first steering head at a second hinge point, one end of the second lever arm is hinged to the rocker arm base at a third hinge point, and the other end of the second lever arm is hinged to the first steering head at a fourth hinge point via a compensating fine-tuning structure;

[0010] By adjusting the length of the compensation fine-tuning structure in the direction of the second lever arm axis, the distance between the third hinge point and the fourth hinge point can be adjusted, so that the first steering head rotates around the second hinge point to maintain the orientation of the connection port in a preset direction.

[0011] Optionally, the compensation fine-tuning structure includes a fine-tuning screw and a first connecting rod, one end of the first connecting rod is threadedly connected to the fine-tuning screw, and the other end of the first connecting rod is hinged to the first steering head at a fourth hinge point, and the fine-tuning screw drives the first connecting rod to move in the axial direction of the second rod arm by rotation.

[0012] Optionally, the fine-tuning screw is arranged parallel to the axis direction of the second lever arm, and when the fine-tuning screw rotates in a first direction, the first connecting rod moves in a direction away from the rocker base, so that the length of the compensation fine-tuning structure in the axis direction of the second lever arm is extended;

[0013] When the fine-tuning screw rotates in the second direction, the first connecting rod moves toward the rocker base, so that the length of the compensation fine-tuning structure in the direction of the second lever arm axis is shortened, wherein the first direction and the second direction are opposite rotation directions.

[0014] Optionally, the compensation fine-tuning structure also includes a locking piece, a first connecting hole is provided on the first connecting rod, and the locking piece is passed through the first connecting hole. The locking piece is adjusted to abut against the fine-tuning screw to achieve the locking of the compensation fine-tuning structure.

[0015] Optionally, after the first rocker component is adjusted by the compensation fine-tuning structure, the lengths of at least one set of opposite sides in the quadrilateral formed by the first hinge point, the second hinge point, the third hinge point and the fourth hinge point are unequal.

[0016] Optionally, the second lever arm further includes a locking device, a sleeve and a pre-tightening assembly, one end of the sleeve is connected to the rocker arm base through the locking device, and the other end of the sleeve is connected to the first steering head through the compensating fine-tuning structure, the pre-tightening assembly is arranged in the sleeve, and the locking device is used to drive the pre-tightening assembly to undergo elastic deformation along the axial direction of the sleeve, and the vertical component of the pre-tightening force generated by the pre-tightening assembly is equal to the gravity acting on the first rocker arm component.

[0017] Optionally, the pre-tightening assembly includes a pre-tightening element and a sliding rod, one end of the pre-tightening element is fixed to the end of the sleeve close to the rocker base, and the other end of the pre-tightening element is sleeved on the sliding rod;

[0018] The locking device includes a locking rope, one end of which is fixed to the rocker base, and the other end of which is passed through the first hinge point and through the pre-tightening element and fixed to the sliding rod;

[0019] During the swinging of the first rocker component, the change in the length of the locking rope passing through the first hinge point drives the sliding rod to slide axially along the sleeve, thereby causing the preload element to undergo elastic deformation along the axial direction of the sleeve.

[0020] Optionally, a first plug and a second plug are fixedly provided on the inner walls of both ends of the sleeve respectively, one end of the pre-tightening element abuts against the first plug, and the sliding rod slides between the first plug and the second plug.

[0021] Optionally, a silencer tube is further sleeved in the sleeve, the pre-tightening element and the sliding rod are both located in the silencer tube, and the pre-tightening element and the sliding rod move within the length of the silencer tube.

[0022] Optionally, the locking device also includes a wire pulley, the locking rope is wound around the wire pulley and fixed on the pre-tensioning assembly, and the locking rope is guided by the wire pulley from the side of the wire pulley away from the rocker base to be parallel to the central axis of the pre-tensioning assembly.

[0023] Optionally, the locking device further comprises a second connecting rod, one end of the second connecting rod is hinged to the rocker base, the other end of the second connecting rod is fixedly connected to the sleeve, and the guide wheel is rotatably disposed on the second connecting rod;

[0024] The locking rope is located between the guide wheel and the second connecting rod, and there is a gap between the locking rope and the second connecting rod.

[0025] Optionally, a first pivot shaft is provided at the first hinge point, and the rocker base includes a rocker base body, a sleeve fixing plate, a damping sleeve, and a fastener, wherein the sleeve fixing plate is fixed to the rocker base body via the fastener, and the sleeve fixing plate and the rocker base body are sleeved on the first pivot shaft via the damping sleeve.

[0026] In which, the damping sleeve includes a first sleeve and a second sleeve, the first sleeve and the second sleeve are respectively arranged on opposite sides of the rocker base body and the sleeve fixing plate, and there is a gap between the first sleeve and the second sleeve. By adjusting the fastener to change the distance between the first sleeve and the second sleeve, the damping force between the damping sleeve and the first pivot shaft is increased or decreased.

[0027] Optionally, a second rocker component is further included, and the second rocker component is rotatably mounted on the connecting port.

[0028] The present application also provides a lighting fixture, comprising the pivot mechanism and a light source component as described in any one of the above items, wherein the light source component is rotatably mounted on the pivot mechanism.

[0029] The above technical solution of this application has the following beneficial effects:

[0030] The pivot mechanism and lighting fixture provided in the present application include a rocker arm base, a rocker arm assembly and a first steering head. By hingedly connecting the two ends of the first arm of the rocker arm assembly to the rocker arm base and the first steering head at a first hinge point and a second hinge point, and hingedly connecting the two ends of the second arm of the rocker arm assembly to the rocker arm base and the first steering head at a third hinge point and a fourth hinge point, a pivot mechanism that can be rotated and adjusted to a certain angle is constructed, and the end of the second arm close to the first steering head is hinged to the first steering head through a compensating fine-tuning structure. During the use of the pivot mechanism, the distance between the third hinge point and the fourth hinge point is adjusted by adjusting the length of the compensating fine-tuning structure in the axis direction of the second arm to make the first steering head rotate around the second hinge point, so that the orientation of the connection port on the first steering head is always maintained in a preset direction to compensate for the assembly errors and process tolerances of the components, thereby ensuring the accuracy of the angles of other components connected to the first steering head. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] FIG1 is a three-dimensional structural diagram of a lighting fixture provided in Example 1 of the present application;

[0033] FIG2 is an exploded view of the structure of the lighting fixture shown in FIG1 ;

[0034] FIG3 is a three-dimensional structural diagram of a lighting fixture provided in Example 2 of the present application;

[0035] FIG4 is a three-dimensional structural diagram of a lighting fixture provided in Example 3 of the present application;

[0036] FIG5 is a three-dimensional structural diagram of a lighting fixture provided in Example 4 of the present application;

[0037] FIG6 is an exploded view of the electrical connection structure provided in an embodiment of the present application;

[0038] FIG7 is a cross-sectional view of the electrical connection structure shown in FIG6 after assembly;

[0039] FIG8 is a schematic diagram of a first rocker member in a first position according to an embodiment of the present application;

[0040] FIG9 is a schematic diagram of a first rocker member in a second position according to an embodiment of the present application;

[0041] FIG10 is a schematic diagram of a partial structure of the first rocker member shown in FIG8 ;

[0042] FIG11 is a schematic diagram of the output electrical interface of the first steering head shown in FIG10 when it is offset to a third position;

[0043] FIG12 is a schematic diagram of the output electrical interface of the first steering head shown in FIG10 when it is offset to a fourth position;

[0044] FIG13 is a schematic diagram of the internal structure of a second lever arm according to an embodiment of the present application;

[0045] FIG14 is a second schematic diagram of the internal structure of the second lever arm provided in an embodiment of the present application;

[0046] FIG15 is a schematic diagram showing a connection between a locking device and a rocker base according to an embodiment of the present application;

[0047] FIG16 is a second schematic diagram of the connection between the locking device and the rocker base provided in an embodiment of the present application;

[0048] FIG17 is one of the exploded views of the partial structure of the first rocker member provided in an embodiment of the present application;

[0049] FIG18 is a second exploded view of a partial structure of the first rocker member provided in an embodiment of the present application;

[0050] FIG19 is a partial schematic diagram of the assembled rocker arm base and rocker arm assembly provided in an embodiment of the present application.

[0051] Figure numerals: 1, light source component; 2, pivot mechanism; 21, first rocker component; 22, second rocker component; 201, rocker base; 202, rocker assembly; 203, first steering head; 204, first lever arm; 205, second lever arm; 206, compensation fine-tuning structure; 207, fine-tuning screw; 208, first connecting rod; 209, first connecting hole; 210, locking device; 211, sleeve; 212, preload 213, muffler; 214, preload element; 215, slide rod; 216, locking rope; 217, first plug; 218, second plug; 219, wire pulley; 220, second connecting rod; 221, wire pulley cover; 222, rocker base body; 223, wire pressing fixing plate; 224, first pivot axis; 225, first sleeve; 226, second sleeve; 227, sleeve fixing plate; 2 28. Second steering head; 229. Fastener; 230. Damping bushing; 231. Bending slot; 3. Base assembly; 31. Base component; 32. Rotating seat component; 320. Mounting port; 4. First protection assembly; 5. Second protection assembly; 6. Output electrical interface; 7. Input electrical interface; 41. Output fixing seat; 42. Output fixing joint; 51. Input fixing seat; 52. Input fixing joint; 421. Embedded section; 422. Plug-in section; 423. First supporting surface; 521. Second supporting surface; 411. First fixing hole; 511. Second fixing hole; R01. First rotation axis; R02. Second rotation axis; R03. Third rotation axis; R1. Pivot axis; A. First hinge point; D. Second hinge point; B. Third hinge point; C. Fourth hinge point; E. Connection point between locking rope and sliding rod. DETAILED DESCRIPTION

[0052] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0053] Referring to Figures 1 and 2 , this embodiment uses a floor lamp as a lighting fixture. The lighting fixture includes a base assembly 3, a pivot mechanism 2, and a light source component 1 (also known as a lamp head). One end of the pivot mechanism 2 is rotatably mounted on the base assembly 3, while the other end of the pivot mechanism 2 is rotatably mounted with the light source component 1. In this embodiment, the light source component 1 is annular in shape, but this is not limiting.

[0054] The base assembly 3 comprises a base component 31 and a rotating base component 32. The rotating base component 32 is rotatably embedded in the base component 31. The rotating base component 32 is provided with a mounting opening 320, through which one end of the pivot mechanism 2 is mounted. The base component 31 primarily serves as a counterweight, providing stable support for the entire lighting fixture. The rotating base component 32 is configured to drive the pivot mechanism 2 for continuous rotation within a range of 360° about a first rotation axis R01, indicated by a dotted line. The first rotation axis R01 is substantially perpendicular to the supporting surface of the base assembly 3.

[0055] The pivot mechanism 2 includes a first swing arm component 21 and a second swing arm component 22. The first swing arm component 21 includes a swing arm base 201, a swing arm assembly 202, and a first steering head 203. The first swing arm component 21 is mounted on the rotating base component 32 via the swing arm base 201 and is rotationally connected to the second swing arm component 22 via the first steering head 203. The second swing arm component 22 is provided with a second steering head 228 at the other end, and the second swing arm component 22 is rotationally connected to the light source component 1 via the second steering head 228.

[0056] The rocker assembly 202 is hingedly connected to the rocker base 201 via a pivot axis. The rocker assembly 202 pivots on the rocker base 201 about a pivot axis R1, indicated by a dashed line. The second rocker component 22 is capable of 360° continuous rotation on the first rocker component 21 about a second rotation axis R02, indicated by a dashed line. The light source component 1 is capable of 360° continuous rotation on the second rocker component 22 about a third rotation axis R03, indicated by a dashed line. Both the second rotation axis R02 and the third rotation axis R03 are parallel to the first rotation axis R01.

[0057] An electrical connection structure is provided between the first swing arm component 21 and the second swing arm component 22 and between the second swing arm component 22 and the light source component 1 . The electrical connection structure can establish an electrical connection between two adjacent components without having to lay cables between the components.

[0058] The lighting fixture of this embodiment can be adjusted and hovered at any angle and position within the use space with just a light touch, without any rebound or sagging after adjustment.

[0059] Please refer to Figure 3. The lighting fixture of this embodiment is a work desk lamp. The lighting fixture of this embodiment has a similar structure to the lighting fixture of the above-mentioned embodiment 1, and includes a base assembly 3, a pivot mechanism 2 and a light source component 1. The specific structure and connection relationship of the base assembly 3, the pivot mechanism 2 and the light source component 1 please refer to the description in the above-mentioned embodiment, which will not be repeated here.

[0060] The rotating seat component 32 is capable of driving the pivot mechanism 2 to rotate continuously within a range of 360° around a first rotation axis R01 indicated by a dotted line. The first rotation axis R01 is perpendicular to the support surface of the base assembly 3. The rocker assembly 202 pivots on the rocker base 201 around a pivot axis R1 indicated by a dotted line. The second rocker component 22 is capable of rotating continuously within a range of 360° around a second rotation axis R02 indicated by a dotted line on the first rocker component 21. The light source component 1 is capable of rotating continuously within a range of 360° around a third rotation axis R03 indicated by a dotted line on the second rocker component 22. Both the second rotation axis R02 and the third rotation axis R03 are parallel to the first rotation axis R01.

[0061] An electrical connection structure is provided between the first swing arm component 21 and the second swing arm component 22 and between the second swing arm component 22 and the light source component 1 . The electrical connection structure can establish an electrical connection between two adjacent components without having to lay cables between the components.

[0062] The lighting fixture of this embodiment can be adjusted and hovered at any angle and position within the use space with just a light touch, without any rebound or sagging after adjustment.

[0063] Referring to Figure 4 , this embodiment of the lighting fixture is a desk lamp, suitable for placement on a desk. The structure of this embodiment of the lighting fixture is similar to that of the work lamp described above, differing only in that the pivot mechanism 2 in this embodiment comprises only one rocker component, namely, the first rocker component 21 ; the light source component 1 is pivotally connected to the first rocker component 21 via a first steering head 203 .

[0064] Among them, the rotating seat component 32 can drive the pivot mechanism 2 to rotate infinitely within a range of 360° around the first rotation axis R01 shown by the dotted line, and the first rotation axis R01 is perpendicular to the supporting surface of the base component 3. The rocker assembly 202 pivots on the rocker base 201 around the pivot axis R1 shown by the dotted line. The light source component 1 can rotate infinitely 360° around the second rotation axis R02 shown by the dotted line on the first rocker component 21. Among them, the second rotation axis R02 is parallel to the first rotation axis R01. The writing desk lamp of this embodiment has similar technical effects to the work desk lamp of the above embodiment, which will not be described here.

[0065] An electrical connection structure is provided between the first rocker component 21 and the light source component 1 , and the electrical connection structure can establish an electrical connection between two adjacent components without having to lay cables between the components.

[0066] Referring to Figure 5 , the lighting fixture of this embodiment is a movable wall lamp that can be mounted on a wall. The movable wall lamp of this embodiment is similar in structure to the floor lamp of the first embodiment, differing only in that the base component 31 of the base assembly 3 of this embodiment is L-shaped. The side walls of the L-shaped base component 31 are used for fixing to the wall, and the bottom of the L-shaped base component 31 is used to support the rotating base component 32.

[0067] The rotating seat component 32 is capable of driving the pivot mechanism 2 to rotate continuously within a range of 360° around a first rotation axis R01 indicated by a dotted line. The first rotation axis R01 is parallel to the mounting surface (wall) of the base assembly 3. The rocker assembly 202 pivots on the rocker base 201 around a pivot axis R1 indicated by a dotted line. The second rocker component 22 is capable of rotating continuously within a range of 360° around a second rotation axis R02 indicated by a dotted line on the first rocker component 21. The light source component 1 is capable of rotating continuously within a range of 360° around a third rotation axis R03 indicated by a dotted line on the second rocker component 22. Both the second rotation axis R02 and the third rotation axis R03 are parallel to the first rotation axis R01.

[0068] An electrical connection structure is provided between the first swing arm component 21 and the second swing arm component 22 and between the second swing arm component 22 and the light source component 1 . The electrical connection structure can establish an electrical connection between two adjacent components without having to lay cables between the components.

[0069] The lighting fixture of this embodiment can be adjusted and hovered at any angle and position within the use space with just a light touch, without any rebound or sagging after adjustment.

[0070] Please refer to Figures 6 and 7. Specifically, the electrical connection structure includes a first protection component 4 and a second protection component 5. The first protection component 4 is provided with an output electrical interface 6, and the second protection component 5 is provided with an input electrical interface 7.

[0071] As shown in Figures 1 to 7 , when the light source component 1 is mounted on the first rocker component 21 or the second rocker component 22, a mechanical connection is achieved between the first rocker component 21 or the second rocker component 22 and the light source component 1 via the first protective assembly 4 and the second protective assembly 5, and an electrical connection is achieved between the first rocker component 21 or the second rocker component 22 and the light source component 1 via the output electrical interface 6 and the input electrical interface 7. When the pivot mechanism 2 includes the first rocker component 21 and the second rocker component 22, a mechanical connection is achieved between the first rocker component 21 and the second rocker component 22 via the first protective assembly 4 and the second protective assembly 5, and an electrical connection is achieved between the first rocker component 21 and the second rocker component 22 via the output electrical interface 6 and the input electrical interface 7.

[0072] Since the first protection component 4 and the second protection component 5 bear the mechanical stress between the adjacent components at both ends of the electrical connection structure, and the output electrical interface 6 and the input electrical interface 7 are not affected by any force inside the first protection component 4 and the second protection component 5 respectively, the problem of the output electrical interface 6 and the input electrical interface 7 being easily damaged under the influence of mechanical stress for a long time can be avoided, the stability of the electrical connection of each component is improved, and thus the service life of the lighting fixture is increased.

[0073] Please continue to refer to Figures 6 and 7. The first protection component 4 includes an output fixing seat 41 and an output fixing connector 42. The second protection component 5 includes an input fixing seat 51 and an input fixing connector 52. The output fixing seat 41 is nested in the output fixing connector 42, and the input fixing seat 51 is nested in the input fixing connector 52. The output electrical interface 6 is fixed on the output fixing seat 41, and the input electrical interface 7 is fixed on the input fixing seat 51.

[0074] Please refer to Figure 7. The input fixed connector 52 is embedded in the input end of the second rocker component and / or the light source component. The output fixed connector 42 includes an embedded section 421 and an inserting section 422. The embedded section 421 is embedded in the output end of the first rocker component or the second rocker component, and the inserting section 422 is inserted into the corresponding input fixed connector 52.

[0075] Furthermore, the outer wall of the plug-in section 422 is provided with a first support surface 423 along its circumference. The first support surface 423 is arranged perpendicular to the axial direction of the output fixed joint 42 and is located at the end of the plug-in section 422 closest to the embedded section 421. The inner wall of the input fixed joint 52 is provided with a second support surface 521 along its circumference. The second support surface 521 is arranged perpendicular to the axial direction of the input fixed joint 52 and is located at the end of the input fixed joint 52 away from the first support surface 423. The input fixed joint 52 and the output fixed joint 42 abut each other via the first support surface 423 and the second support surface 521. This ensures that mechanical stress between adjacent components at both ends of the electrical connection structure (such as the first and second rocker components) is primarily concentrated on the first and second protection components 4 and 5, thereby preventing damage to the output electrical interface 6 and the input electrical interface 7.

[0076] In one embodiment, the input fixed joint 52 is threadedly connected to the input end of the second rocker component and / or the light source component, and the output fixed joint 42 is threadedly connected to the output end of the first rocker component or the second rocker component, which is convenient for installation and disassembly.

[0077] Furthermore, the inner diameter of the embedded section 421 is larger than that of the plug section 422. The outer diameter of the output fixing seat 41 matches the inner diameter of the embedded section 421. The inner wall of the output fixing joint 42 forms a stepped structure corresponding to the first support surface 423. The end surface of the output fixing seat 41 near the input fixing joint 52 abuts against the stepped structure. The stepped structure can limit the axial position of the output fixing seat 41 in the electrical connection structure.

[0078] The output fixing base 41 is provided with a first fixing hole 411 , and the output electrical interface 6 is fixed to the output fixing base 41 through the first fixing hole 411 .

[0079] Furthermore, the outer diameter of the input fixing seat 51 at the end away from the output fixing seat 41 is larger than the outer diameter at the end closer to the output fixing seat 41. The end of the input fixing seat 51 away from the output fixing seat 41 overlaps the second support surface 521, while the end of the input fixing seat 51 closer to the output fixing seat 41 is inserted into the input fixing joint 52. This design can limit the position of the input fixing seat 51 in the axial direction of the electrical connection structure.

[0080] The input fixing base 51 is provided with a second fixing hole 511 , and the input electrical interface 7 is fixed to the input fixing base 51 through the second fixing hole 511 .

[0081] Because both the input fixing base 51 and the output fixing base 41 are limited in the axial direction of the electrical connection structure, this further ensures that the input electrical interface 7 and the output electrical interface 6 are not subjected to mechanical stress between adjacent components after being plugged in. Furthermore, the first and second protection components 4 and 5, as well as the input and output electrical interfaces 7 and 6, are all connected using a plug-in connection, enabling plug-and-play operation of all components and facilitating ease of use. Furthermore, the connectors can be rotated circumferentially along the electrical connection structure, avoiding the drawback of conventional connector terminals that cannot be rotated freely during use.

[0082] Referring to Figures 8 and 9 , the first rocker component 21 includes a rocker base 201, a rocker assembly 202, and a first steering head 203. The rocker assembly 202 includes a first arm 204 and a second arm 205. One end of the first arm 204 is hinged to the rocker base 201 at a first hinge point A, and the other end of the first arm 204 is hinged to the first steering head 203 at a second hinge point D. One end of the second arm 205 is hinged to the rocker base 201 at a third hinge point B, and the other end of the second arm 205 is hinged to the first steering head 203 at a fourth hinge point C. The first arm 204 has a cavity, and the second arm 205 can be disposed within the cavity of the first arm 204, thereby enhancing the integrity of the first rocker component 21 and saving space.

[0083] The first hinge point A, the second hinge point D, the third hinge point B and the fourth hinge point C form a quadrilateral ABCD (as shown by the imaginary connecting lines between the hinge points in the figure), wherein the lengths of the connecting line between the first hinge point A and the third hinge point B (i.e., the AB side (imaginary) of the quadrilateral), the connecting line between the first hinge point A and the second hinge point D (i.e., the AD side (imaginary) of the quadrilateral), and the connecting line between the second hinge point D and the fourth hinge point C (i.e., the DC side (imaginary) of the quadrilateral) are all kept constant.

[0084] Due to the inevitable assembly errors and process tolerances between the first arm 204, the second arm 205, the rocker base 201 and the first steering head 203, when the first rocker component 21 swings between the first position (as shown in Figure 8) and the second position (as shown in Figure 9), the direction of the connection port (i.e., the output electrical interface 6) on the first steering head 203 deviates from the preset direction (such as the vertical direction). The deviation angle will directly affect the angles of other components connected above the first rocker component 21.

[0085] Based on this, in the embodiment of the present application, a compensating fine-tuning structure 206 is provided at one end of the second arm 205 near the first steering head 203. The second arm 205 is hinged to the first steering head 203 at the fourth hinge point C via the compensating fine-tuning structure 206. The first steering head 203 is provided with an output electrical interface 6. By adjusting the length of the compensating fine-tuning structure 206 in the direction of the axis of the second arm 205 to adjust the distance between the third hinge point B and the fourth hinge point C, the first steering head 203 is rotated around the second hinge point D by a certain angle, thereby always maintaining the orientation of the output electrical interface 6 in a preset direction (e.g., vertical).

[0086] Please refer to Figure 10. The compensation fine-tuning structure 206 includes a fine-tuning screw 207 and a first connecting rod 208. One end of the first connecting rod 208 is threadedly connected to the fine-tuning screw 207, and the other end of the first connecting rod 208 is hinged to the first steering head 203 at the fourth hinge point C. The fine-tuning screw 207 drives the first connecting rod 208 to move in the axial direction of the second arm 205 by rotating.

[0087] Specifically, fine-tuning screw 207 is arranged parallel to the axis of the second arm. When fine-tuning screw 207 rotates in a first direction, first connecting rod 208 moves away from rocker base 201, causing the length of compensation fine-tuning structure 206 along the axis of the second arm to increase. Specifically, the length of the connecting line between third hinge point B and fourth hinge point C (i.e., side BC of the quadrilateral (imaginary)) increases. During the swinging process of the first rocker component, if the output electrical interface 6 shifts to the third position, as shown in FIG11 , fine-tuning screw 207 is rotated in the first direction (e.g., counterclockwise), thereby increasing the length of compensation fine-tuning structure 206 along the axis of the second arm. Driven by first connecting rod 208 and articulated at second hinge point D, first steering head 203 rotates counterclockwise about second hinge point D by a specified angle a, maintaining the orientation of the output electrical interface 6 of first steering head 203 in a predetermined direction (e.g., vertical).

[0088] When the fine-tuning screw 207 rotates in the second direction, the first connecting rod 208 moves toward the rocker base 201, shortening the length of the compensating fine-tuning structure 206 in the direction of the second arm axis. This shortens the length of the connecting line between the third hinge point B and the fourth hinge point C (i.e., the imaginary side BC of the quadrilateral). The first and second directions are opposite rotational directions. During the swinging of the first rocker component, if the output electrical interface 6 shifts to the fourth position, as shown in FIG12 , the fine-tuning screw 207 is rotated in the second direction (e.g., clockwise), shortening the length of the compensating fine-tuning structure 206 in the direction of the second arm axis. Driven by the first connecting rod 208 and articulated at the second hinge point D, the first steering head 203 rotates clockwise around the second hinge point D by a specified angle a, maintaining the orientation of the output electrical interface 6 of the first steering head 203 in a predetermined direction (e.g., vertical).

[0089] After the first rocker member 21 is adjusted by the compensating fine-tuning structure 206, the lengths of at least one pair of opposite sides of the quadrilateral formed by the first hinge point A, the second hinge point D, the third hinge point B, and the fourth hinge point C become unequal. For example, the compensating fine-tuning structure 206 adjusts the length of the quadrilateral's (imaginary) side BC to be greater than or less than the length of the quadrilateral's (imaginary) side AD, thereby adjusting the quadrilateral to a trapezoidal structure.

[0090] Continuing with FIG10 , in one embodiment, the compensating fine-tuning structure 206 further includes a locking member. A first connecting hole 209 is defined on the first connecting rod 208, and the locking member is inserted into the first connecting hole 209. After the compensating fine-tuning structure 206 is adjusted, the locking member is adjusted to abut against the fine-tuning screw 207 to lock the compensating fine-tuning structure 206.

[0091] Please refer to Figure 13. The second arm 205 also includes a locking device 210, a sleeve 211 and a pre-tightening assembly 212. One end of the sleeve 211 is connected to the rocker base 201 through the locking device 210, and the other end of the sleeve 211 is connected to the first steering head 203 through the compensating fine-tuning structure 206. The pre-tightening assembly 212 is arranged in the sleeve 211, and the locking device 210 is used to drive the pre-tightening assembly 212 to undergo elastic deformation along the axial direction of the sleeve 211. The vertical component of the pre-tightening force generated by the pre-tightening assembly 212 is equal to the gravity exerted on the first rocker component.

[0092] The pre-tensioning assembly 212 includes a pre-tensioning element 214 and a sliding rod 215. One end of the pre-tensioning element 214 is fixed to the end of the sleeve 211 near the rocker base 201, and the other end is sleeved onto the sliding rod 215. The locking device 210 includes a locking rope 216. One end of the locking rope 216 is fixed to the rocker base 201, and the other end of the locking rope 216 passes through the first hinge point A, through the pre-tensioning element 214, and is fixed to the sliding rod 215. As the first rocker component 21 swings, the change in the length of the locking rope 216 around the first hinge point A drives the sliding rod 215 to slide axially along the sleeve 211, thereby causing the pre-tensioning element 214 to elastically deform axially along the sleeve 211.

[0093] In one embodiment, the preload element 214 is a spring, and the spring is in a compressed state during the swinging of the rocker assembly.

[0094] The preload element 214 has a preset preload force, which can at least resist the weight of the first swing arm component. Preferably, the preset preload force can resist the total weight of the first swing arm component and other components located thereon (such as the second swing arm component and the light source component).

[0095] The locking rope 216 is secured to the rocker base 201 via the first hinge point A. The first hinge point A, the third hinge point B, and the connection point E between the locking rope 216 and the sliding rod 215 form a vector triangle (ABE). The preload element 214 has a predetermined preload force. Once secured to the rocker base 201, the locking rope 216 generates a reaction force against the preload force of the preload element 214. As the first rocker component swings, the length of the locking rope 216's pivot axis around the first hinge point A is varied, driving the sliding rod 215 and the preload element 214 to slide, thereby dynamically adjusting the preload force of the preload element 214. For example, the initial preload force of the preload element 214 is set to the combined weight of the first rocker component and other components located thereon when the first rocker component is positioned vertically (i.e., approximately parallel to the central axis of the rocker base). When the first swing arm component is positioned vertically, the locking rope 216 and the pivot axis at the first hinge point A are approximately tangent to each other. At this point, the length of the locking rope 216 wrapped around the pivot axis at the first hinge point A is at its shortest, and the AE side of the vector triangle is at its longest. The initial vertical preload force of the preload element 214 and the combined weight of the first swing arm component and the other components positioned above it cancel each other out, leaving the entire luminaire in a near-zero-gravity state. When the first swing arm component is tilted at a certain angle, the length of the locking rope 216 wrapped around the first hinge point A increases. The locking rope 216 pulls the sliding rod 215 to slide, compressing the preload element 214. The AE side of the vector triangle shortens, dynamically adjusting the preload force of the preload element 214 so that the vertical component of the preload force equals the combined weight of the first swing arm component and the other components positioned above it.

[0096] This embodiment constructs a vector triangle (ABE) to generate a partial upward component of force and balance the overall product mass gravity according to the equilibrium equation of the planar force system (the vector triangle solves the dynamic balance problem), thereby achieving the adjustment and hovering of the lamp at any position in the use space without any rebound or sagging after adjustment.

[0097] Furthermore, a first plug 217 and a second plug 218 are fixedly provided on the inner walls of both ends of the sleeve 211 respectively, one end of the preload element 214 abuts against the first plug 217 , and the sliding rod 215 slides between the first plug 217 and the second plug 218 .

[0098] Furthermore, a silencer tube 213 is also sleeved in the sleeve 211, and the pre-tightening element 214 and the sliding rod 215 are both located in the silencer tube 213, and the pre-tightening element 214 and the sliding rod 215 move within the length of the silencer tube 213, thereby avoiding the pre-tightening component 212 from generating noise during the sliding process.

[0099] Referring to Figure 14 , the locking device 210 includes a locking rope 216, a guide pulley 219, and a second connecting rod 220. One end of the second connecting rod 220 is hinged to the swing arm base, and the other end of the second connecting rod 220 is fixedly connected to the sleeve 211. The guide pulley 219 is rotatably mounted on the second connecting rod 220. One end of the locking rope 216 is fixed to the swing arm base 201, while the other end of the locking rope 216 is wound around the guide pulley 219, passed through the pre-tensioning assembly 212, and fixed to the end of the pre-tensioning assembly 212 away from the swing arm base 201.

[0100] Guided by the guide pulley 219, the portion of the locking cord 216 on the side away from the rocker base 201 remains parallel to the central axis of the pretensioning assembly 212. As the rocker base 202 rotates around the rocker base 201, rolling friction occurs between the locking cord 216 and the guide pulley 219. However, the portion of the locking cord 216 within the sleeve 211 remains parallel to the central axis of the pretensioning assembly 212. This prevents sliding friction between the locking cord 216 and the internal structure of the sleeve 211, protecting the locking cord 216 from damage. Since there is no sliding friction between the locking cord 216 and the internal structure of the sleeve 211, the pretensioning force of the pretensioning assembly 212 is not affected, thereby improving the stability of the lighting fixture.

[0101] Specifically, the locking rope 216 is located between the wire pulley 219 and the second connecting rod 220, and a gap is formed between the locking rope 216 and the second connecting rod 220 to prevent sliding friction between the locking rope 216 and the second connecting rod 220. The locking rope 216 passes around the wire pulley 219 and passes through the pre-tensioning element 214 to be fixed to the sliding rod 215.

[0102] Furthermore, the locking device 210 further includes a wire pulley pressure cover 221 , and both ends of the rotating shaft of the wire pulley 219 are rotatably mounted on the second connecting rod 220 through the two wire pulley pressure covers 221 .

[0103] Furthermore, the portion of the locking rope 216 disposed on the rocker base 201 is bent multiple times into a curved shape, so that the locking rope 216 increases multiple static friction forces, thereby improving the stability of the locking device.

[0104] Specifically, referring to Figures 15 and 16, the swing arm base 201 includes a swing arm base body 222 and a wire pressing plate 223. The swing arm base body 222 is provided with a curved slot 231, through which the locking cord 216 is inserted, thereby forming a corresponding curved segment. As shown in Figure 15, after the locking cord 216 is wound through the curved slot 231, it forms the first and second curved changes at point F. As shown in Figure 16, after the locking cord 216 is wound through the curved slot 231, it forms the third and fourth curved changes at point G. The end of the locking cord 216 is pressed between the wire pressing plate 223 and the swing arm base body 222 by a fastener.

[0105] The curved design of the locking cord 216 cleverly increases static friction multiple times. Combined with the action of the wire-pressing retaining plate 223, the locking cord 216 is extremely stable and unlikely to loosen. This allows for more accurate calculation of the reaction force while compressing the preload element, resulting in more precise calculations of the overall product's mass, gravity, and reaction force, resulting in a superior product experience.

[0106] Referring to Figures 17-19 , the first pivot shaft 224 at the first hinge point A is embedded in the cavity of the rocker assembly 202 (first arm 204 ). The rocker base 201 further includes a sleeve fixing plate 227, a damping sleeve 230, and a fastener 229. The sleeve fixing plate 227 is fixed to the rocker base body 222 via the fastener 229. The sleeve fixing plate 227 and the rocker base body 222 are sleeved on the first pivot shaft 224 via the damping sleeve 230. The damping sleeve 230 includes a first sleeve 225 and a second sleeve 226, which are respectively disposed on opposite sides of the rocker base body 222 and the sleeve fixing plate 227. The first sleeve 225 and the second sleeve 226 are both adapted to the first pivot shaft 224 , and the first sleeve 225 and the second sleeve 226 are combined to form a cavity structure for accommodating the first pivot shaft 224 .

[0107] The rocker arm base body 222 is installed on one side of the first pivot shaft 224 via the first shaft sleeve 225, and the shaft sleeve fixing plate 227 is installed on the other side of the first pivot shaft 224 via the second shaft sleeve 226, and the shaft sleeve fixing plate 227 is fixed to the rocker arm base body 222 by the fastener 229, thereby realizing a two-in-one fixing method of the rocker arm base 201 and the rocker arm assembly 202, making the structure more compact and rigorous, and the space for multiple structures to be used together is smaller.

[0108] Furthermore, a gap (e.g., 0.6 mm) exists between the first sleeve 225 and the second sleeve 226. Adjusting the fastener 229 can change the distance between the first sleeve 225 and the second sleeve 226, thereby increasing or decreasing the damping force between the damping sleeve 230 and the first pivot shaft 224. This embodiment adjusts the damping force between the damping sleeve 230 and the first pivot shaft 224 by adjusting the damping force, preventing the rocker arm assembly from rebounding or sagging after adjustment, thereby achieving a better balance between gravity and reaction force in the overall lamp.

[0109] The lighting fixture provided in this application integrates multiple geometric mechanics principles, comprehensively designing the product's natural gravity and the friction generated during mechanical connection to create a vector triangle to solve dynamic balance problems. This allows the fixture to be adjusted and hovered anywhere within the space it is used in, and can be rotated and adjusted to any angle (over 360°) with a simple touch, without any rebound or sagging after adjustment.

[0110] 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. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pivot mechanism comprising: A first rocker component (21), the first rocker component (21) comprising a rocker base (201), a rocker assembly (202) and a first steering head (203), the first steering head (203) being provided with a connection port; The rocker assembly (202) comprises a first lever arm (204) and a second lever arm (205), one end of the first lever arm (204) is hinged to the rocker base (201) at a first hinge point (A), the other end of the first lever arm (204) is hinged to the first steering head (203) at a second hinge point (D), one end of the second lever arm (205) is hinged to the rocker base (201) at a third hinge point (B), and the other end of the second lever arm (205) is hinged to the first steering head (203) at a fourth hinge point (C) via a compensating fine-tuning structure (206); By adjusting the length of the compensating fine-tuning structure (206) in the axial direction of the second lever arm (205), the distance between the third hinge point (B) and the fourth hinge point (C) can be adjusted, so that the first steering head (203) rotates around the second hinge point (D) to maintain the orientation of the connection port in a preset direction.

2. The pivot mechanism according to claim 1, wherein: The compensation fine-tuning structure (206) includes a fine-tuning screw (207) and a first connecting rod (208), one end of the first connecting rod (208) is threadedly connected to the fine-tuning screw (207), and the other end of the first connecting rod (208) is hinged to the first steering head (203) at a fourth hinge point (C), and the fine-tuning screw (207) drives the first connecting rod (208) to move in the axial direction of the second lever arm (205) by rotating.

3. The pivot mechanism according to claim 2, wherein: The fine-tuning screw (207) is arranged parallel to the axis direction of the second lever arm (205); when the fine-tuning screw (207) rotates in a first direction, the first connecting rod (208) moves in a direction away from the rocker base (201), so that the length of the compensation fine-tuning structure (206) in the axis direction of the second lever arm (205) is extended; When the fine-tuning screw (207) rotates in the second direction, the first connecting rod (208) moves in a direction close to the rocker base (201), so that the length of the compensation fine-tuning structure (206) in the axial direction of the second lever arm (205) is shortened, wherein the first direction and the second direction are opposite rotation directions.

4. The pivot mechanism according to claim 3, wherein: The compensating fine-tuning structure (206) further includes a locking member, wherein a first connecting hole (209) is provided on the first connecting rod (208), and the locking member is passed through the first connecting hole (209). The compensating fine-tuning structure (206) is locked by adjusting the locking member to abut against the fine-tuning screw (207).

5. The pivot mechanism according to any one of claims 1 to 4, wherein: After the first rocker component (21) is adjusted by the compensating fine-tuning structure (206), the lengths of at least one set of opposite sides in a quadrilateral formed between the first hinge point (A), the second hinge point (D), the third hinge point (B) and the fourth hinge point (C) are unequal.

6. The pivot mechanism according to any one of claims 1 to 4, wherein: The second lever arm (205) further includes a locking device (210), a sleeve (211) and a pre-tightening assembly (212); one end of the sleeve (211) is connected to the rocker base (201) via the locking device (210); the other end of the sleeve (211) is connected to the first steering head (203) via the compensating fine-tuning structure (206); the pre-tightening assembly (212) is disposed in the sleeve (211), and the locking device (210) is used to drive the pre-tightening assembly (212) to undergo elastic deformation along the axial direction of the sleeve (211); the pre-tightening force generated by the pre-tightening assembly (212) has a vertical component equal to the gravity acting on the first rocker component (21).

7. The pivot mechanism according to claim 6, wherein: The pre-tightening assembly (212) includes a pre-tightening element (214) and a sliding rod (215), one end of the pre-tightening element (214) is fixed to the end of the sleeve (211) close to the rocker base (201), and the other end of the pre-tightening element (214) is sleeved on the sliding rod (215); The locking device (210) includes a locking rope (216), one end of which is fixed to the rocker base (201), and the other end of which is passed through the first hinge point (A), passes through the pre-tightening element (214), and is fixed to the sliding rod (215); During the swinging of the first rocker component (21), the length change of the locking rope (216) passing through the first hinge point (A) drives the sliding rod (215) to slide axially along the sleeve (211), thereby causing the pre-tightening element (214) to undergo elastic deformation axially along the sleeve (211).

8. The pivot mechanism according to claim 7, wherein: A first plug (217) and a second plug (218) are respectively provided on the inner walls of both ends of the sleeve (211), one end of the pre-tightening element (214) abuts against the first plug (217), and the sliding rod (215) slides between the first plug (217) and the second plug (218).

9. The pivot mechanism according to claim 7, wherein: A silencer tube (213) is also sleeved in the sleeve (211), the pre-tightening element (214) and the sliding rod (215) are both located in the silencer tube (213), and the pre-tightening element (214) and the sliding rod (215) move within the length of the silencer tube (213).

10. The pivot mechanism according to claim 7, wherein: The locking device (210) further comprises a wire pulley (219), the locking rope (216) being wound around the wire pulley (219) and fixed on the pre-tightening assembly (212), and the locking rope (216) is guided by the wire pulley (219) so that the portion of the locking rope (216) from the side of the wire pulley (219) away from the rocker base (201) is parallel to the central axis of the pre-tightening assembly (212).

11. The pivot mechanism according to claim 10, wherein: The locking device (210) further includes a second connecting rod (220), one end of the second connecting rod (220) is hinged to the rocker base (201), the other end of the second connecting rod (220) is fixedly connected to the sleeve (211), and the guide wheel (219) is rotatably arranged on the second connecting rod (220); The locking rope (216) is located between the guide wheel (219) and the second connecting rod (220), and a gap exists between the locking rope (216) and the second connecting rod (220).

12. The pivot mechanism according to claim 11, wherein: A first pivot shaft (224) is provided at the first hinge point (A); the rocker base (201) comprises a rocker base body (222), a shaft sleeve fixing plate (227), a damping shaft sleeve (230) and a fastener (229); the shaft sleeve fixing plate (227) is fixed to the rocker base body (222) via the fastener (229); and the shaft sleeve fixing plate (227) and the rocker base body (222) are sleeved on the first pivot shaft (224) via the damping shaft sleeve (230); The damping sleeve (230) includes a first sleeve (225) and a second sleeve (226), the first sleeve (225) and the second sleeve (226) being respectively arranged on opposite sides of the rocker base body (222) and the sleeve fixing plate (227), a gap being present between the first sleeve (225) and the second sleeve (226), and the damping force between the damping sleeve (230) and the first pivot shaft (224) being increased or decreased by adjusting the fastener (229) to change the distance between the first sleeve (225) and the second sleeve (226).

13. The pivot mechanism according to claim 1, wherein: It also includes a second rocker component (22), which is rotatably mounted on the connecting port.

14. A lighting fixture, comprising the pivot mechanism (2) according to any one of claims 1 to 13 and a light source component (1), wherein the light source component (1) is rotatably mounted on the pivot mechanism (2).

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