Damping universal arm support

Abstract

The utility model discloses a damping universal arm support which comprises a first assembly and a second assembly, the first assembly and the second assembly are symmetrically arranged, and the first assembly and the second assembly are both used for connecting objects. The damping external member is arranged at the position between the first assembly and the second assembly, and the first assembly and the second assembly are movably connected through the damping external member; and the limiting assembly is arranged at the position of the end portion of the damping sleeve piece and used for limiting the damping sleeve piece and meanwhile used for rotation limiting of the first assembly and the second assembly. According to the damping universal arm support, through the matching design of multiple structures, the damping universal arm support can connect two objects through the first assembly and the second assembly, stepless adjustment of the first assembly and the second assembly can be achieved through the damping suite, clamping of the damping suite can be achieved through the limiting assembly, and the damping universal arm support is convenient to use. Therefore, the damping effect is achieved when the first assembly and the second assembly are connected, and rotation limiting of the first assembly and the second assembly can be achieved by screwing the limiting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of photographic equipment, in particular to a damping universal arm bracket. Background Art

[0002] Cameras, camcorders and mobile phones are commonly used devices for recording images, and they often require various accessories to achieve different shooting effects or facilitate the setup of special camera positions.

[0003] As the demand for image production becomes more and more personalized and the information flow is fast-paced, people have more and more demands for quick and accurate installation or adjustment of equipment. One of the most commonly used tools is the universal arm. However, due to structural problems, the traditional universal arm cannot achieve fast and precise adjustment. For this reason, this application proposes a damping universal arm bracket to provide a new technical solution to solve the problem of fast and precise adjustment mentioned above. Utility Model Content

[0004] Based on this, it is necessary to provide a damping universal arm bracket to address the above technical problems. Through a multi-structure coordination design, the device can connect two objects through component one and component two respectively. The damping kit can realize infinite adjustment of component one and component two, and the damping kit can be clamped through the limit kit, thereby achieving the damping effect when component one and component two are connected. The rotation limit of component one and component two can be achieved by tightening the limit kit.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A damping universal arm bracket is used for connecting objects and adjusting the angles of objects.

[0007] The damping universal arm bracket specifically includes:

[0008] Component 1 and component 2, wherein the component 1 and component 2 are symmetrically arranged, and both the component 1 and component 2 are used for connecting objects;

[0009] a damping kit, which is arranged between the first component and the second component, and the first component and the second component are movably connected through the damping kit;

[0010] The limiting component is arranged at the end of the damping kit and is used for limiting the position of the damping kit and for limiting the rotation of component one and component two.

[0011] As a preferred embodiment of the damping universal arm bracket provided by the utility model, the component one includes a movable arm one, the upper end of the movable arm one is sleeved with a ball head limiting shell one, the lower end of the ball head limiting shell one is threadedly connected to the movable arm one by a fixing screw one, a ball bowl one is placed on the inner bottom of the ball head limiting shell one, the top ball hinge of the ball head limiting shell one is connected to a ball head one, the top of the ball head one is detachably connected to a connecting piece one, the upper end of the connecting piece one is provided with a locking screw one, a push rod one is provided inside the movable arm one, the upper end of the push rod one is fitted with the bottom of the ball bowl one through a fixing screw one, the push rod one is vertically slidably connected to the fixing screw one, and the lower end of the push rod one extends to the inner side of the lower end of the movable arm;

[0012] The second component includes a second movable arm, the upper end of the first movable arm is sleeved with a second fixing screw, the lower end of the second fixing screw is threadedly connected to the second movable arm through a second ball head limiting shell, a second ball bowl is placed on the inner bottom of the second fixing screw, the top ball hinge of the second fixing screw is connected to a second ball head, the top of the second ball head is detachably connected to a second connector, the upper end of the second connector is provided with a second locking screw, a second push rod is provided inside the second movable arm, the upper end of the second push rod passes through the second ball head limiting shell and fits into the bottom of the second ball bowl, the second push rod is vertically slidably connected to the second ball head limiting shell, and the lower end of the second push rod extends to the inner side of the lower end of the second movable arm.

[0013] As a preferred embodiment of the damping universal arm bracket provided by the utility model, the damping kit includes a conical pressing piece, an expansion sleeve limiting shell, and an expansion sleeve. The conical pressing piece is plug-connected to the bottom of one side of movable arm one, and the expansion sleeve limiting shell is plug-connected to the bottom of one side of movable arm two. A cover one is provided on the outside of movable arm one, and a cover one is provided on the outside of the conical pressing piece. The cover one is fixedly connected to movable arm one by screws. The cover two is fixedly connected to movable arm two by screws. An expansion sleeve is placed inside the expansion sleeve limiting shell, and the end of the conical pressing piece away from movable arm one extends into the interior of the expansion sleeve limiting shell, and the end of the conical pressing piece located on the inner side of the expansion sleeve limiting shell is fitted with the inner side of one end of the expansion sleeve.

[0014] As a preferred embodiment of the damping universal arm bracket provided by the utility model, the limiting assembly includes a bevel nut, a bevel slider, and a locking wrench. One end of the bevel nut extends into the inner side of the lower end of the movable arm, and passes through the conical pressing piece, cover 1, expansion sleeve, and expansion sleeve limit shell in sequence to extend to the inner side of the lower end of the movable arm 2. The end of the bevel nut located on the inner side of the lower end of the movable arm is set as a bevel, and the lower end of the push rod 1 is fitted with the bevel of the end of the bevel nut. A bevel slider is placed inside the lower end of the movable arm 2. The end of the bevel slider close to the bevel nut is set as a bevel, and the lower end of the push rod 2 is fitted with the bevel of the end of the bevel slider. One end of the locking wrench passes through the bevel slider and extends into the interior of the bevel nut, and the locking wrench is threadedly connected to the bevel nut.

[0015] As a preferred embodiment of the damping universal arm bracket provided by the present invention, the outer side of the locking wrench is threadedly connected to a decorative cover.

[0016] As a preferred embodiment of the damping universal arm bracket provided by the present invention, the expansion sleeve is configured as a hollow cylinder, and expansion grooves are alternately provided at both ends of the expansion sleeve. The inner side of one end of the expansion sleeve close to the conical pressing sheet is configured as a conical surface, and the conical surface is in contact with the surface of the conical pressing sheet.

[0017] As a preferred embodiment of the damping universal arm bracket provided by the present invention, the expansion sleeve is configured as a hollow cylinder, a split groove is opened on one side of the expansion sleeve along the axial direction, a connecting rod is inserted into the split groove, and the end of the connecting rod away from the expansion sleeve is plugged into the conical pressing piece.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The damping universal arm bracket provided by the utility model adopts a multi-structure coordination design, so that the device can connect two objects through component one and component two respectively, and the component one and component two can be infinitely adjusted through the damping kit, and the damping kit can be clamped through the limit kit, thereby achieving the damping effect when the component one and component two are connected, and the rotation limitation of the component one and component two can be achieved by tightening the limit kit.

[0020] The damping universal arm bracket provided by the utility model, through the coordinated design of multiple structures, enables the device to achieve infinite adjustment of the locking force and hovering within the allowed weight. The user can adjust the angle of the device in real time during use without having to loosen or lock the fixing knob again. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the overall structure of the damping universal arm bracket provided by the utility model;

[0023] Figure 2 This is a schematic structural diagram of the damping universal arm bracket component 1, component 2, damping kit, and limit assembly provided by the utility model;

[0024] Figure 3 This is a cross-sectional view of the overall structure of the damping universal arm bracket provided by the utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure of the damping universal arm bracket component 1, component 2, damping kit, and limit assembly provided by the utility model;

[0026] Figure 5 This is a schematic structural diagram of the damping kit and the limit assembly of the damping universal arm bracket provided by the utility model;

[0027] Figure 6 This is a schematic structural diagram of an expansion sleeve of the damping universal arm provided by the present invention;

[0028] Figure 7 This is a structural schematic diagram of another expansion sleeve of the damping universal arm provided by the utility model.

[0029] The markings in the figure are as follows:

[0030] 1. Locking screw 1; 2. Locking screw 2; 3. Connecting piece 1; 4. Connecting piece 2; 5. Ball head 1; 6. Ball head 2; 7. Ball bowl 1; 8. Ball bowl 2; 9. Fixing screw 1; 10. Fixing screw 2; 11. Ball head limit shell 1; 12. Ball head limit shell 2; 13. Push rod 1; 14. Push rod 2; 15. Movable arm 1; 16. Movable arm 2; 17. Bevel nut; 18. Bevel slider; 19. Conical pressing piece; 20. Cover 1; 21. Cover 2; 22. Expansion sleeve limit shell; 23. Expansion sleeve; 24. Locking wrench; 25. Decorative cover; 26. Assembly 1; 27. Assembly 2; 28. Damping kit; 29. ​​Limit assembly; 30. Connecting rod. DETAILED DESCRIPTION

[0031] In order to help those skilled in the art better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0032] As mentioned in the background art, the traditional universal arm cannot achieve fast and precise adjustment due to structural problems.

[0033] In order to solve this technical problem, the utility model provides a damping universal arm bracket, which is used for connecting objects and adjusting the angles of objects.

[0034] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0035] Example 1:

[0036] Please refer to Figure 1 - Figure 6 , a damping universal arm bracket, comprising:

[0037] Component one 26 and component two 27 are symmetrically arranged, and both component one 26 and component two 27 are used for connecting objects;

[0038] A damping kit 28 is provided between the first component 26 and the second component 27 , and the first component 26 and the second component 27 are movably connected via the damping kit 28 ;

[0039] The limiting component 29 is arranged at the end of the damping kit 28 and is used to limit the damping kit 28 and also to limit the rotation of component 1 26 and component 2 27 .

[0040] Specifically, component 126 includes a movable arm 15, the upper end of which is sleeved with a ball head limiting shell 11, the lower end of which is threadedly connected to the movable arm 15 via a fixing screw 9, a ball bowl 7 is placed on the inner bottom of the ball head limiting shell 11, the top of the ball head limiting shell 11 is connected to a ball head 5 by a ball hinge, the top of the ball head 5 is detachably connected to a connector 3, the upper end of the connector 3 is provided with a locking screw 1, a push rod 13 is provided inside the movable arm 15, the upper end of the push rod 13 passes through the fixing screw 9 and fits with the bottom of the ball bowl 7, the push rod 13 is vertically slidably connected to the fixing screw 9, and the lower end of the push rod 13 extends to the inner side of the lower end of the movable arm 15;

[0041] Specifically, component 27 includes a movable arm 2 16, the upper end of the movable arm 15 is sleeved with a fixing screw 2 10, the lower end of the fixing screw 2 10 is threadedly connected to the movable arm 2 16 through a ball head limit shell 2 12, a ball bowl 2 8 is placed on the inner bottom of the fixing screw 2 10, the top ball hinge of the fixing screw 2 10 is connected to the ball head 2 6, the top of the ball head 2 6 is detachably connected to the connecting piece 2 4, the upper end of the connecting piece 2 4 is provided with a locking screw 2 2, the interior of the movable arm 2 16 is provided with a push rod 2 14, the upper end of the push rod 2 14 passes through the ball head limit shell 2 12 and fits with the bottom of the ball bowl 2 8, the push rod 2 14 is vertically slidably connected to the ball head limit shell 2 12, and the lower end of the push rod 2 14 extends to the inner side of the lower end of the movable arm 2 16.

[0042] Specifically, the damping kit 28 includes a conical pressing piece 19, an expansion sleeve limiting shell 22, and an expansion sleeve 23. The conical pressing piece 19 is plugged into the bottom of one side of the movable arm 15, and the expansion sleeve limiting shell 22 is plugged into the bottom of one side of the movable arm 2 16. A cover 20 is provided on the outside of the movable arm 15. The outer side of the conical pressing piece 19 is sleeved with a cover 20. The cover 20 is fixed to the movable arm 15 by screws. The outer side of the expansion sleeve limiting shell 22 is sleeved with a cover 21. The cover 21 is fixed to the movable arm 2 16 by screws. An expansion sleeve 23 is placed inside the expansion sleeve limiting shell 22. The end of the conical pressing piece 19 away from the movable arm 15 extends into the interior of the expansion sleeve limiting shell 22, and the end of the conical pressing piece 19 located on the inner side of the expansion sleeve limiting shell 22 is fitted with the inner side of one end of the expansion sleeve 23.

[0043] Specifically, the limiting assembly 29 includes a beveled nut 17, a beveled slider 18, and a locking wrench 24. One end of the beveled nut 17 extends into the inner side of the lower end of movable arm 15 and sequentially passes through the conical pressing piece 19, cover 1 20, expansion sleeve 23, and expansion sleeve limiting shell 22 to extend to the inner side of the lower end of movable arm 2 16. The end of the beveled nut 17 located inside the lower end of movable arm 15 is configured as a beveled surface. The lower end of the push rod 13 mates with the beveled surface of the end of the beveled nut 17. The beveled slider 18 is placed inside the lower end of movable arm 2 16. The end of the beveled slider 18 near the beveled nut 17 is configured as a beveled surface. The lower end of the push rod 2 14 mates with the beveled surface of the end of the beveled slider 18. One end of the locking wrench 24 passes through the beveled slider 18 and extends into the interior of the beveled nut 17. The locking wrench 24 is threadedly connected to the beveled nut 17. Furthermore, a decorative cover 25 is threadedly connected to the outer side of the locking wrench 24.

[0044] With the above structural design, the conical pressing piece 19 is placed into the movable arm 15 and pressed down with the cover 120. The cover 21, the expansion sleeve limit shell 22, and the movable arm 216 are installed in the same manner. Then, the expansion sleeve 23 is placed into the expansion sleeve limit shell 22 and the conical pressing piece 19 is connected to it. The bevel nut 17 is passed through any previously installed component, and the bevel slider 18 is installed in the other component. Then, the locking wrench 24 is connected to the bevel nut 17 through the thread. At this time, the component 1 26 and the component 2 27 are fixed as a single component with a rotatable shaft in the middle. The ball head 15 is passed through the ball head limit shell 11 and then installed into the ball bowl 17. At this time, the push rod 13 needs to be inserted into the previously installed movable arm 15, and the ball head 5, ball bowl 17, and ball head limit shell 11 are connected to the previously installed movable arm 15 with the fixing screw 9. The installation method of the other side is the same. Finally, pass the locking screw 1 through the connector 3 to connect the two, and then connect the connector 3 and the ball head 5 together with screws. The installation method on the other side is the same.

[0045] When the locking wrench 24 and the bevel nut 17 are not tightened, the bevel nut 17 and the bevel slider 18 cannot apply pressure to the push rod 13 and the push rod 2 14, and the tension between the locking wrench 24 and the bevel nut 17 cannot make the middle rotating shaft part fully contact. Therefore, at this time, the spherical surfaces of the ball head 1 5 and the ball head 2 6, as well as the conical pressure piece 19, the expansion sleeve limit shell 22, and the expansion sleeve 23 The rotating shafts are all in an active state. In this state, the user can adjust the component 1 26 and the component 2 27 to various angles.

[0046] During operation, it is only necessary to tighten the locking wrench 24, and the distance between the two can be shortened by tightening the bevel nut 17, while also squeezing the bevel slider 18. Since the bevel nut 17 and the bevel slider 18 have connected bevels with the same angle as the push rod 13 and the push rod 2 14, when the bevel nut 17 and the bevel slider 18 are subjected to the locking pressure of the locking wrench 24, the bevels will guide part of the force upward through the push rod 13 and the push rod 2 14. At this time, the ball bowl 1 7 and the ball bowl 2 8 connected to the push rod 1 13 and the push rod 2 14 will push the ball heads of the ball head 1 5 and the ball head 2 6 toward the fixing screw 2 10 and the ball head limit shell 1 11 when they are subjected to the upward guiding force, and the overall movement will also stop under the restriction of the fixing screw 2 10 and the ball head limit shell 1 11.

[0047] At the same time, as the distance between the locking wrench 24 and the beveled nut 17 decreases, the conical pressing piece 19, the expansion sleeve limit shell 22, and the expansion sleeve 23 are also squeezed simultaneously. Since the expansion sleeve 23 has a bevel taper and an elastic component designed for expansion, it will expand toward the periphery under the pressure of the conical pressing piece 19 with the same angle, and the expansion range is now limited to the expansion sleeve limit shell 22. Continuous force is applied to the locking wrench 24, and the ball head 1 5 and ball head 2 6 are locked under the advancement of the ball bowl 1 7 and ball bowl 2 8 and the restriction of the set screw 2 10 and the ball head limit shell 1 11. Similarly, the conical pressing piece 19 will also push the expansion sleeve 23 open and lock the expansion sleeve limit shell 22 under the continuous squeezing force.

[0048] Through the above structural design, the invention designs the middle component expansion sleeve 23 as an elastic expansion connector. Figure 6 As shown, the expansion sleeve 23 provides varying locking forces when different forces are applied to the locking wrench 24. In extreme tests, after applying approximately 10kg of pressure to the locking wrench 24, the center portion can withstand a rotational torque of 1.5Nm. The ball joints at both ends can withstand a maximum load of 8kg at their shortest lever arm and a minimum load of 5kg at their longest lever arm, representing the maximum locking force. As the locking wrench 24 is gradually loosened, the elastic expansion connector contracts and the upward force of push rods 13 and 2 decreases, causing the shaft and ball joint to enter a frictionally damped state. This allows the device to be suspended at any angle when carrying lightweight equipment, and allows for real-time adjustment of angle and position, without the need for full unlocking required for adjustments like with traditional universal arms.

[0049] Through the above structural design, the present invention provides a ball head 5, a ball head 2 6 as shown in FIG. Figure 3 The design features a replaceable slot structure. Side mounting screw holes are reserved on ball head 1 (5) and ball head 2 (6). Simply removing the screws allows the accessory connectors to be replaced to accommodate different sizes or functions. Furthermore, the side mounting screw holes are more stable than traditional threaded and glued connectors.

[0050] Example 2:

[0051] The damping universal arm bracket provided in Example 1 is further optimized, specifically, as follows Figure 6 The expansion sleeve 23 is configured as a hollow cylinder, and expansion grooves are alternately provided at both ends of the expansion sleeve 23 . The inner side of one end of the expansion sleeve 23 close to the conical pressing piece 19 is configured as a conical surface, and the conical surface fits the surface of the conical pressing piece 19 .

[0052] Through the above-mentioned structural design, the conical surface of the end of the expansion sleeve 23 is squeezed by the conical surface pressing piece 19, so that the end of the expansion sleeve 23 expands and begins to expand. By increasing the friction between the conical surface pressing piece 19 and the expansion sleeve 23, and the expansion sleeve 23 contacts the inner wall of the expansion sleeve limit shell 22 after expansion, a damping effect is achieved.

[0053] Example 3:

[0054] The only difference between this embodiment and the above-mentioned embodiment 2 is the structure of the expansion sleeve 23. Specifically, the expansion sleeve 23 of this embodiment is configured as a hollow cylinder, and a split groove is opened on one side of the expansion sleeve 23 along the axial direction. A connecting rod 30 is inserted into the split groove, and the end of the connecting rod 30 away from the expansion sleeve 23 is plugged into and connected to the conical pressing piece 19.

[0055] Through the above-mentioned structural design, the expansion sleeve 23 can also be expanded by squeezing the end of the expansion sleeve 23 through the conical pressing piece 19. At the same time, the expansion sleeve 23 can be quickly connected to the conical pressing piece 19 through the connecting rod 30. At this time, the friction force will act on component one 26 and component two 27 at the same time.

Claims

1. A damping universal arm bracket, characterized in that: include: Component one (26) and component two (27), wherein the component one (26) and component two (27) are symmetrically arranged, and the component one (26) and component two (27) are both used for connecting objects; A damping kit (28) is provided between the first component (26) and the second component (27), wherein the first component (26) and the second component (27) are movably connected via the damping kit (28); A limiting component (29) is arranged at the end of the damping kit (28) and is used for limiting the position of the damping kit (28) and for limiting the rotation of component one (26) and component two (27); The component (26) includes a movable arm (15), the upper end of the movable arm (15) is provided with a ball head limiting shell (11), the lower end of the ball head limiting shell (11) is threadedly connected to the movable arm (15) through a fixing screw (9), a ball bowl (7) is placed on the inner bottom of the ball head limiting shell (11), the top ball joint of the ball head limiting shell (11) is connected to the ball head (5), and the top of the ball head (5) is connected to the ball head (5). The movable arm (15) is detachably connected to a connecting piece (3), the upper end of which is provided with a locking screw (1), and the interior of the movable arm (15) is provided with a top rod (13), the upper end of the top rod (13) passes through a fixing screw (9) and fits with the bottom of the bowl (7), the top rod (13) is vertically slidably connected to the fixing screw (9), and the lower end of the top rod (13) extends to the inner side of the lower end of the movable arm (15); The second component (27) includes a second movable arm (16), the upper end of the first movable arm (15) is provided with a second fixing screw (10), the lower end of the second fixing screw (10) is threadedly connected to the second movable arm (16) through a second ball head limiting shell (12), a second ball bowl (8) is placed on the inner bottom of the second fixing screw (10), the top of the second fixing screw (10) is connected to the second ball head (6) by a ball hinge, and the top of the second ball head (6) is detachable. The detachable connection is provided with a second connecting member (4), the upper end of the second connecting member (4) is provided with a second locking screw (2), the interior of the second movable arm (16) is provided with a second push rod (14), the upper end of the second push rod (14) passes through the second ball head limiting shell (12) and fits with the bottom of the second ball bowl (8), the second push rod (14) is vertically slidably connected to the second ball head limiting shell (12), and the lower end of the second push rod (14) extends to the inner side of the lower end of the second movable arm (16); The damping kit (28) includes a conical pressing piece (19), an expansion sleeve limiting shell (22), and an expansion sleeve (23). The conical pressing piece (19) is plug-connected to the bottom of one side of the movable arm (15). The expansion sleeve limiting shell (22) is plug-connected to the bottom of one side of the movable arm (16). A cover (20) is provided on the outer side of the movable arm (15). The outer side of the conical pressing piece (19) is provided with a cover (20). The cover (20) is connected to the movable arm (15). The expansion sleeve limiting shell (22) is fixedly connected by screws, and the outer side of the expansion sleeve limiting shell (22) is provided with a cover 2 (21), and the cover 2 (21) is fixedly connected to the movable arm 2 (16) by screws. An expansion sleeve (23) is placed inside the expansion sleeve limiting shell (22), and the end of the conical pressing piece (19) away from the movable arm 1 (15) extends into the expansion sleeve limiting shell (22), and the end of the conical pressing piece (19) located on the inner side of the expansion sleeve limiting shell (22) fits with the inner side of one end of the expansion sleeve (23).

2. The damping universal arm bracket according to claim 1, characterized in that: The limiting assembly (29) includes a bevel nut (17), a bevel slider (18), and a locking wrench (24). One end of the bevel nut (17) extends into the inner side of the lower end of the movable arm (15), and passes through the conical pressing piece (19), the cover (20), the expansion sleeve (23), and the expansion sleeve limiting shell (22) in sequence to extend to the inner side of the lower end of the movable arm (16). The end of the bevel nut (17) located on the inner side of the lower end of the movable arm (15) is set as a bevel. The push rod (13) The lower end of the movable arm (16) is fitted with the inclined surface of the end of the inclined nut (17), and an inclined slider (18) is placed inside the lower end of the movable arm (16). The end of the inclined slider (18) close to the inclined nut (17) is set as an inclined surface. The lower end of the push rod (14) is fitted with the inclined surface of the end of the inclined slider (18), and one end of the locking wrench (24) passes through the inclined slider (18) and extends into the interior of the inclined nut (17). The locking wrench (24) is threadedly connected to the inclined nut (17).

3. The damping universal arm bracket according to claim 2, characterized in that: The outer side of the locking wrench (24) is threadedly connected to a decorative cover (25).

4. The damping universal arm bracket according to claim 1, characterized in that: The expansion sleeve (23) is configured as a hollow cylinder, and expansion grooves are alternately provided at both ends of the expansion sleeve (23). The inner side of one end of the expansion sleeve (23) close to the conical pressing sheet (19) is configured as a conical surface, and the conical surface is in contact with the surface of the conical pressing sheet (19).

5. The damping universal arm bracket according to claim 1, characterized in that: The expansion sleeve (23) is configured as a hollow cylinder. A split through groove is provided on one side of the expansion sleeve (23) along the axial direction. A connecting rod (30) is inserted into the split through groove. The end of the connecting rod (30) away from the expansion sleeve (23) is plug-connected to the conical pressing piece (19).

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