Rotation-limited ball joint and lamp

Abstract

The utility model relates to the technical field of lamp rotating joints, in particular to a rotation-limited ball joint and a lamp, the rotation-limited ball joint comprises a ball body, a mounting seat with a spherical inner cavity and a rotating shaft, one end of the ball body is movably mounted in the spherical inner cavity of the mounting seat, and the other end of the ball body protrudes out of the mounting seat; a first through hole penetrates through the mounting seat, a second through hole penetrates through the ball head body, the first through hole and the second through hole are coaxially arranged and penetrate through the ball center of the ball head body, the rotating shaft penetrates through the first through hole and the second through hole, and the hole diameter of the second through hole is larger than the outer diameter of the rotating shaft and smaller than the diameter of the ball head body. The utility model aims to overcome the defect that the conventional internal wiring ball joint is easy to hinge, and provides the rotation-limited ball joint and the lamp, so that not only can multi-dimensional angle adjustment be realized, but also internal hinge can be avoided, the use requirements of users can be met, and the service life of the product can be prolonged.

Description

Technical Field

[0001] This utility model relates to the field of lamp rotation joint technology, and more specifically, to a ball joint with rotation restriction and a lamp. Background Technology

[0002] A ball joint is a mechanical connection consisting of two main parts: a ball head and a ball seat. The ball head is a spherical connector with a smooth surface; the ball seat is a concave component that mates with the ball head, providing support and guidance. The ball joint works by utilizing the free movement of the ball head within the ball seat. Due to the spherical shape of the ball head, it can rotate and tilt in multiple directions. This freedom allows the ball joint to withstand forces and torques from different directions and adapt to various working environments and motion requirements. In lighting applications, ball joints offer multiple degrees of freedom, enabling the light-emitting part to meet various user needs. However, for ball joints requiring internal wiring, especially in applications like screen lights, users need to adjust multiple angles, but the adjustment range is not large. Ordinary rotary joints can only adjust in a single dimension, failing to meet user needs. While ordinary ball joints can meet these needs, their 360-degree rotation can easily damage the internal hinge wires of the ball head, affecting the product's lifespan. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing ball joints with internal wiring that are prone to wire tangling, and to provide a ball joint and lamp with rotation restriction, which can achieve multi-dimensional angle adjustment and avoid internal wire tangling, thereby meeting the user's needs and improving the product's service life.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A ball joint with rotation restriction is provided, including a ball head body, a mounting base with a spherical inner cavity, and a rotating shaft. One end of the ball head body is movably mounted in the spherical inner cavity of the mounting base, and the other end protrudes from the mounting base. The mounting base has a first through hole, and the ball head body also has a second through hole. The first through hole and the second through hole are coaxially arranged and pass through the center of the ball head body. The rotating shaft passes through both the first through hole and the second through hole. The diameter of the second through hole is larger than the outer diameter of the rotating shaft and smaller than the diameter of the ball head body.

[0006] The ball joint body of this invention is the ball head, and the mounting base is the ball seat. The ball head body and the mounting base are movably connected, enabling multiple different dimensions of movement in a conventional ball joint. A rotating shaft passing through the mounting base and the ball head body limits the rotation of the ball joint. The gap between the second through hole and the rotating shaft limits the rotation of the ball head body in two directions. The direction along the axis of the rotating shaft is defined as the X direction, the direction along the axis of the ball head body and parallel to the center line of the protruding part of the mounting base is defined as the Y direction, and the directions perpendicular to both the X and Y directions are defined as the Z direction. When the ball head body rotates along the Z-direction axis and when it rotates along the Y-direction axis, the rotating shaft provides a limit. The gap between the second through hole and the rotating shaft provides the rotation space for the ball head body. When the ball head body rotates along the X-direction axis, the gap between the protruding part of the ball head body and the mounting base provides a rotation limit. Rotation in all three directions follows the rule that the larger the gap, the larger the rotation angle; and the smaller the gap, the smaller the rotation angle.

[0007] Furthermore, the rotating shaft is a bolt, and also includes a nut, which is threadedly connected to the end of the rotating shaft and abuts against the mounting base. While the bolt serves as a rotating shaft, it also functions as a fastener in conjunction with the nut, allowing for a reliable connection between the ball head and the mounting base. Within the understanding of those skilled in the art, the rotating shaft can also be configured with a smooth shaft in the middle and threads at both ends, with nuts used at each end for fastening.

[0008] Furthermore, the bottom of the ball joint body is an open structure, and the interior is a hollow structure. This design reduces the weight of the ball joint body, thereby reducing the overall weight of the ball joint. It also facilitates wiring inside the ball joint body, improving the product's aesthetics.

[0009] Furthermore, the ball head body is provided with reinforcing ribs, and the reinforcing ribs have U-shaped grooves for avoiding the rotating shaft. The addition of reinforcing ribs can increase the strength of the ball head body and improve its resistance to deformation.

[0010] Furthermore, the ball head body includes a ball head and an extension connected to each other. The ball head is located within the mounting base, and the extension protrudes from the mounting base. The ball head is used to cooperate with the mounting base to achieve rotation in multiple different directions, and the extension facilitates connection between the ball head and the outside world.

[0011] Furthermore, the mounting base is provided with a socket that communicates with the spherical inner cavity. The extension is inserted into the socket, and the maximum outer diameter of the extension is smaller than the diameter of the socket. By creating a gap between the extension and the socket, the ball head body can be limited when rotating along the X-axis by utilizing the gap between the outer diameter of the extension in the Z-direction and the diameter of the socket, so that the ball head body can rotate within a certain angular range.

[0012] Furthermore, it also includes a connector, one end of which passes through the extension and connects to the ball head, while the other end is cantilevered. The connector facilitates connection between the ball head body and the outside world. Moreover, the connector also serves a positioning and guiding function, allowing the wire to run along the connector and slightly fixing the wire along it, thereby reducing the risk of wire breakage and decreasing the stress on the wire. The connector also facilitates detachable connection of the ball joint to the outside world; mounting holes can be provided on the connector, allowing for detachable connection via bolts.

[0013] Furthermore, the mounting base includes a first cover, a second cover, a first limiting block, and a second limiting block. The first limiting block and the second limiting block are symmetrically arranged, and both the inner sides of the first limiting block and the second limiting block are recessed, forming the spherical inner cavity together. The ball head body is movably mounted between the first limiting block and the second limiting block. The first cover and the second cover are located on both sides of the first limiting block and the second limiting block, respectively, and are detachably connected. The ball head body is limited and installed by the first limiting block and the second limiting block. Preferably, the inner sides of the first limiting block and the second limiting block form an arc-shaped recess, which can be hemispherical or a part of a sphere, allowing the spherical body to rotate at multiple angles. The first cover and the second cover provide installation space for the first limiting block and the second limiting block, and facilitate the connection of the ball head joint with other components.

[0014] This utility model also provides a lamp fixture, including a lamp body assembly, a lamp holder, and a ball joint with rotation restriction as described above. The lamp body assembly is movably connected to the lamp holder via the ball joint with rotation restriction. The lamp body assembly of this utility model can rotate at multiple different angles, thereby improving the lighting angle and lighting range of the lamp body assembly and meeting various different user needs; it is especially suitable for applications in computer screen lights.

[0015] Furthermore, the lamp holder includes a first clamping part and a second clamping part rotatably connected, with the first clamping part connected to the rotation-limiting ball joint. The first clamping part and the second clamping part can be tightly fitted together. After adjusting their relative rotation angle, their tight fit can simultaneously achieve a fixing effect. Alternatively, fasteners can be added to maintain the relative angle between the first clamping part and the second clamping part. The lamp assembly can be clamped onto a computer screen using the first clamping part and the second clamping part, and then the angle of the lamp assembly can be rotated using the ball joint, thereby meeting the user's lighting needs.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) It has multiple degrees of freedom of rotation at different angles: it can rotate within a certain range around the axis in the X direction, the axis in the Y direction, and the axis in the Z direction respectively;

[0018] (2) By routing the wires inside the ball joint, the product's aesthetics can be improved.

[0019] (3) By setting the gap between the second through hole and the rotating shaft, the rotation angle of the ball head body is limited, so as to avoid the internal hinge line from being too large. Attached Figure Description

[0020] Figure 1 This is an exploded structural diagram of a ball joint with rotation restriction according to the present invention.

[0021] Figure 2 This is a first-view assembly structure diagram of the ball head body of this utility model;

[0022] Figure 3 for Figure 2 AA section axonometric drawing;

[0023] Figure 4 for Figure 2 A cross-sectional view of the ball head body at its first extreme position after rotation along the Y-axis;

[0024] Figure 5 for Figure 2 AA section view;

[0025] Figure 6 for Figure 2 A cross-sectional view of the ball head body at its second extreme position after rotation along the Y-axis;

[0026] Figure 7 This is a schematic diagram of the assembly structure of the ball head body from a second perspective.

[0027] Figure 8 for Figure 7 BB section axonometric view;

[0028] Figure 9 for Figure 7 A BB cross-sectional view of the first extreme position of the ball head body after rotation along the Z-axis.

[0029] Figure 10 for Figure 7 BB section view;

[0030] Figure 11 for Figure 7 A BB cross-sectional view of the second extreme position of the ball head body after rotation along the Z-axis;

[0031] Figure 12 This is a schematic diagram of the assembly structure of a ball joint with rotation restriction according to the present invention;

[0032] Figure 13 for Figure 12 CC section axonometric drawing after the wires have been installed;

[0033] Figure 14 for Figure 12 CC cross-sectional view of the ball head body at its first extreme position after rotation along the X-axis;

[0034] Figure 15 for Figure 12 CC section view;

[0035] Figure 16 for Figure 12 CC cross-sectional view of the second extreme position of the ball head body after rotation along the X-axis;

[0036] Figure 17 This is a schematic diagram of the assembly structure of a lamp according to the present invention.

[0037] The markings in the diagram are explained below:

[0038] 1. Ball head body; 11. Second through hole; 12. Reinforcing rib; 13. Ball head; 14. Extension; 2. Mounting base; 21. First through hole; 22. Insertion hole; 23. First cover; 24. Second cover; 25. First limiting block; 26. Second limiting block; 3. Rotating shaft; 4. Nut; 5. Connector; 101. Lamp body assembly; 102. Lamp holder; 1021. First clamping part; 1022. Second clamping part; 103. Ball head joint; 104. Wire. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0040] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] Example 1

[0042] like Figures 1 to 16 The first embodiment of the ball joint with rotation restriction of this utility model is shown, including a ball head body 1, a mounting seat 2 with a spherical inner cavity, and a rotating shaft 3. One end of the ball head body 1 is movably installed in the spherical inner cavity of the mounting seat 2, and the other end protrudes from the mounting seat 2. The mounting seat 2 is provided with a first through hole 21, and the ball head body 1 is also provided with a second through hole 11. The first through hole 21 and the second through hole 11 are coaxially arranged and pass through the center of the ball head body 1. The rotating shaft 3 is provided through the first through hole 21 and the second through hole 11 respectively. The diameter of the second through hole 11 is larger than the outer diameter of the rotating shaft 3 and smaller than the diameter of the ball head body 1.

[0043] The ball joint body 1 of this utility model is the ball head, and the mounting base 2 is the ball seat. The ball head body 1 and the mounting base 2 are movably connected, enabling multiple different dimensions of movement of the ordinary ball joint 103. A rotating shaft 3 passes through the mounting base 2 and the ball head body 1 to limit the rotation of the ball joint 103. The gap between the second through hole 11 and the rotating shaft 3 forms a rotational limit for the ball head body 1 in two directions. The direction along the axis of the rotating shaft 3 is defined as the X direction, the direction along the axis of the ball head body 1 and parallel to the center line of the portion protruding from the mounting base 2 is defined as the Y direction, and the directions perpendicular to both the X and Y directions are defined as the Z direction. Figures 9 to 11 When the ball head body 1 rotates along the Z-axis, as... Figures 4 to 6 And when the ball head body 1 rotates along the Y-axis, the rotating shaft 3 forms a limit, and the gap between the second through hole 11 and the rotating shaft 3 is the rotation space of the ball head body 1, such as Figures 14 to 16 When the ball head body 1 rotates along the axis in the X direction, the gap between the part of the ball head body 1 that protrudes from the mounting base 2 and the mounting base 2 forms a rotation limit; the rotation in the three different directions all follow the rule that the larger the gap, the larger the rotation angle; the smaller the gap, the smaller the rotation angle.

[0044] In one embodiment of this utility model, the rotating shaft 3 is a bolt, and a nut 4 is also included. The nut 4 is threadedly connected to the end of the rotating shaft 3 and abuts against the mounting base 2.

[0045] While the bolt serves as the pivot 3, it also functions as a fastener in conjunction with the nut 4, enabling a reliable connection between the ball head body 1 and the mounting base 2. Within the understanding of those skilled in the art, the pivot 3 can also be configured with a smooth shaft in the middle and threads at both ends, with nuts 4 used at each end for fastening.

[0046] As one embodiment of this utility model, the bottom of the ball head body 1 is an open structure, and the inside is a hollow structure.

[0047] This design reduces the weight of the ball joint body 1, thereby reducing the overall weight of the ball joint 103. It also facilitates wiring inside the ball joint body 1, improving the product's aesthetics.

[0048] As one embodiment of this utility model, the ball head body 1 is provided with a reinforcing rib 12, and the reinforcing rib 12 has a U-shaped groove for avoiding the rotating shaft 3.

[0049] The addition of reinforcing rib 12 can increase the strength of the ball head body 1 and improve its resistance to deformation.

[0050] As one embodiment of the present invention, the ball head body 1 includes a ball head 13 and an extension 14 connected to each other. The ball head 13 is located inside the mounting base 2, and the extension 14 protrudes from the mounting base 2.

[0051] The ball head 13 is used to cooperate with the mounting base 2 to achieve rotation in multiple different directions, and the extension 14 facilitates the connection of the ball head 13 to the outside world.

[0052] As one embodiment of this utility model, the mounting base 2 is provided with a socket 22, which is connected to the spherical inner cavity. The extension 14 is inserted into the socket 22, and the maximum outer diameter of the extension 14 is smaller than the diameter of the socket 22.

[0053] like Figures 14 to 16By creating a gap between the extension 14 and the socket 22, the ball head body 1 can be limited to rotate along the X-axis by utilizing the gap between the outer diameter of the extension 14 in the Z direction and the diameter of the socket 22, so that the ball head body 1 can rotate within a certain angle range.

[0054] As one embodiment of this utility model, the mounting base 2 includes a first cover 23, a second cover 24, a first limiting block 25, and a second limiting block 26. The first limiting block 25 and the second limiting block 26 are symmetrically arranged. The inner sides of the first limiting block 25 and the second limiting block 26 are both recessed, forming a spherical inner cavity together. The ball head body 1 is movably mounted between the first limiting block 25 and the second limiting block 26. The first cover 23 and the second cover 24 are located on both sides of the first limiting block 25 and the second limiting block 26, respectively, and the first cover 23 and the second cover 24 are detachably connected.

[0055] like Figure 1 The ball joint 103 is positioned and installed by the first limiting block 25 and the second limiting block 26. Preferably, the inner sides of the first limiting block 25 and the second limiting block 26 form an arc-shaped recess, which can be hemispherical or a part of a sphere, allowing the spherical body to rotate at multiple angles. The first cover 23 and the second cover 24 provide installation space for the first limiting block 25 and the second limiting block 26, and facilitate the connection of the ball joint 103 with other components. The first cover 23 and the second cover 24 cover the outer sides of the first limiting block 25 and the second limiting block 26, and the insertion hole 22 is formed by the first cover 23 and the second cover 24.

[0056] Example 2

[0057] The following is a second embodiment of the ball joint with rotation restriction according to the present invention. This embodiment is similar to the first embodiment, except that it also includes a connector 5. One end of the connector 5 passes through the extension 14 and is connected to the ball head 13, and the other end is cantilevered.

[0058] The connector 5 facilitates the connection between the ball joint 1 and the outside world. Furthermore, the connector 5 serves a positioning and guiding function, allowing the wire 104 to run along it. It also slightly fixes the wire 104 along the connector 5, thereby reducing the risk of breakage and minimizing stress on the wire 104. The connector 5 also allows for detachable connection between the ball joint 103 and the outside world. Mounting holes can be provided on the connector 5, allowing for detachable connection via bolts.

[0059] Example 3

[0060] like Figure 17The present invention provides an embodiment of a lamp, including a lamp body assembly 101, a lamp holder 102, and a ball joint 103 for limiting rotation as described above. The lamp body assembly 101 is movably connected to the lamp holder 102 via the ball joint 103 for limiting rotation.

[0061] The lamp body assembly 101 of this utility model can rotate at multiple different angles, thereby improving the lighting angle and lighting range of the lamp body assembly 101 to meet a variety of different user needs; it is especially suitable for application in computer screen lights.

[0062] As one embodiment of the present invention, the lamp holder 102 includes a first clamping part 1021 and a second clamping part 1022 that are rotatably connected, and the first clamping part 1021 is connected to a ball joint 103 that restricts rotation.

[0063] The first clamping part 1021 and the second clamping part 1022 can be tightly fitted together. After adjusting their relative rotation angle, their tight fit can simultaneously achieve a fixing effect. Alternatively, fasteners can be added to maintain the relative angle between the first clamping part 1021 and the second clamping part 1022. The lamp assembly 101 can be clamped onto the computer screen using the first clamping part 1021 and the second clamping part 1022, and the angle of the lamp assembly 101 can be rotated using the ball joint 103, thereby meeting the user's lighting needs.

[0064] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A ball joint with rotation restriction, characterized in that, The device includes a ball head body (1), a mounting base (2) with a spherical inner cavity, and a rotating shaft (3). One end of the ball head body (1) is movably installed in the spherical inner cavity of the mounting base (2), and the other end protrudes from the mounting base (2). The mounting base (2) has a first through hole (21), and the ball head body (1) also has a second through hole (11). The first through hole (21) and the second through hole (11) are coaxially arranged and pass through the center of the ball head body (1). The rotating shaft (3) passes through the first through hole (21) and the second through hole (11) respectively. The diameter of the second through hole (11) is larger than the outer diameter of the rotating shaft (3) and smaller than the diameter of the ball head body (1).

2. The ball joint with rotation restriction according to claim 1, characterized in that, The rotating shaft (3) is a bolt, and also includes a nut (4), which is threaded to the end of the rotating shaft (3) and abuts against the mounting base (2).

3. The ball joint with rotation restriction according to claim 1, characterized in that, The bottom of the ball head body (1) is an open structure, and the inside is a hollow structure.

4. The ball joint with rotation restriction according to claim 1, characterized in that, The ball head body (1) is provided with a reinforcing rib (12), and the reinforcing rib (12) has a U-shaped groove for avoiding the rotating shaft (3).

5. The rotation-limiting ball joint according to any one of claims 1 to 4, characterized in that, The ball head body (1) includes a ball head (13) and an extension (14) connected to each other. The ball head (13) is located inside the mounting base (2), and the extension (14) protrudes from the mounting base (2).

6. The ball joint with rotation restriction according to claim 5, characterized in that, The mounting base (2) is provided with a socket (22), which is connected to the spherical inner cavity. The extension (14) is inserted into the socket (22), and the maximum outer diameter of the extension (14) is smaller than the diameter of the socket (22).

7. The ball joint with rotation restriction according to claim 5, characterized in that, It also includes a connector (5), one end of which passes through the extension (14) and connects to the ball head (13), and the other end is cantilevered.

8. The ball joint with rotation restriction according to claim 1, characterized in that, The mounting base (2) includes a first cover (23), a second cover (24), a first limiting block (25), and a second limiting block (26). The first limiting block (25) and the second limiting block (26) are symmetrically arranged. The inner sides of the first limiting block (25) and the second limiting block (26) are both recessed, forming the spherical inner cavity together. The ball head body (1) is movably mounted between the first limiting block (25) and the second limiting block (26). The first cover (23) and the second cover (24) are located on both sides of the first limiting block (25) and the second limiting block (26), respectively, and the first cover (23) and the second cover (24) are detachably connected.

9. A lamp, characterized in that, The lamp includes a lamp body assembly (101), a lamp holder (102), and a rotation-limiting ball joint (103) as described in any one of claims 1 to 8, wherein the lamp body assembly (101) is movably connected to the lamp holder (102) via the rotation-limiting ball joint (103).

10. The lamp according to claim 9, characterized in that, The lamp holder (102) includes a first clamping part (1021) and a second clamping part (1022) that are rotatably connected, and the first clamping part (1021) is connected to the rotation-restricting ball joint (103).

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