Quick adjustment mechanism with swivel head

Abstract

This utility model discloses a rapid tilt and rotation adjustment mechanism for a display head, including a head base assembly and a head assembly. The head assembly is rotatable around a first horizontal axis and is mounted on the head base assembly. It also includes an elastic element, a pull pin, and an adjustment handle. The pull pin is slidably mounted inside the head base assembly. One end of the elastic element is connected to an eccentric position on the head assembly, and the other end is connected to the pull pin. The adjustment handle is mounted on the outside of the head base assembly. The adjustment handle can drive the pull pin to slide and stop and position the pull pin at any position. The sliding of the pull pin can cause the elastic element to stretch or contract, thereby changing the elastic torque applied by the elastic element to the side wall of the head assembly. This utility model provides convenient adjustment of the display head tilt angle without the need for hardware tools.

Description

Technical Field

[0001] This utility model relates to a monitor stand, and more particularly to a quick-adjustment mechanism for head tilt and rotation. Background Technology

[0002] Currently, monitor stands typically employ a hinged structure connecting a rotating head assembly and a rotating head base around a horizontal pivot for better viewing angle adjustment. The tilt angle of the monitor is adjusted by moving the rotating head assembly up and down. After adjustment, the rotating head assembly and rotating head base need to be locked in place. The common method is to tighten the rotating head assembly and rotating head base with screws and place friction pads between them. The tension of the screws creates significant friction between the friction pads and the rotating head assembly and rotating head base, thereby locking the rotating head assembly in place. Due to the monitor's own weight, this structure can cause the monitor to tilt downwards after prolonged use, requiring frequent adjustments. Moreover, with long-term use, wear on the friction pads can easily lead to the failure of the monitor's tilt angle positioning. Summary of the Invention

[0003] To overcome the above shortcomings, this utility model provides a quick tilt and rotation adjustment mechanism for the monitor. This mechanism enables rapid adjustment of the monitor's tilt angle and prevents the monitor from tilting down even after long-term use.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a rapid adjustment mechanism for tilting and rotating a rotating head, including a rotating head base assembly and a rotating head assembly. The rotating head assembly is rotatably mounted on the rotating head base assembly around a first horizontal axis. It also includes an elastic element, a pull pin, and an adjustment handle. The pull pin is slidably mounted inside the rotating head base assembly. One end of the elastic element is connected to an eccentric position of the rotating head assembly, and the other end of the elastic element is connected to the pull pin. The adjustment handle is mounted on the outside of the rotating head base assembly. The adjustment handle can drive the pull pin to slide and stop and position the pull pin at any position. The sliding of the pull pin can drive the elastic element to stretch or contract, thereby changing the elastic torque applied by the elastic element to the side wall of the rotating head assembly.

[0005] As a further improvement of this utility model, the elastic element is a torsion spring sleeved on a horizontal rotating shaft. The side wall of the rotating head assembly is provided with a first torsion spring insertion hole, and the upper side wall of the pull pin is provided with a second torsion spring insertion hole. The two ends of the torsion spring are respectively inserted into the first torsion spring insertion hole and the second torsion spring insertion hole, and then fixedly connected to the rotating head assembly and the pull pin.

[0006] As a further improvement of this utility model, the rotating head assembly includes a U-shaped rotating plate, and the rotating head seat assembly includes a rotating head seat. The rotating plate is sleeved on the outside of the rotating head seat. The two side walls of the U-shaped structure of the rotating plate are respectively provided with first torsion spring insertion holes. The upper end of the pull pin is located in the middle of the U-shaped structure of the rotating plate. The torsion spring includes two sets of coils designed symmetrically. One end of the two sets of coils of the torsion spring is inserted into the first torsion spring insertion holes on the two side walls of the rotating plate, and the other end of the two sets of coils of the torsion spring passes through the second torsion spring insertion hole at the upper end of the pull pin.

[0007] As a further improvement of this utility model, a pull pin slide is formed in the middle of the rotating head seat, and torsion spring receiving grooves are formed on both sides of the rotating head seat. The bottom surface of the torsion spring receiving groove is connected to the pull pin slide through a hollow notch. A support boss is formed on the bottom surface of the torsion spring receiving groove. The two coils of the torsion spring are respectively received in the torsion spring receiving grooves on both sides of the rotating head seat and sleeved on the outside of the support boss. The other ends of the two coils of the torsion spring extend into the pull pin slide through the hollow notch and are inserted into the second torsion spring insertion hole at the upper end of the pull pin in the pull pin slide.

[0008] As a further improvement of this utility model, a limiting groove is formed on the outer circumferential wall of the support boss in the torsion spring receiving groove on both sides of the rotating head seat, and a limiting protrusion is provided on at least one side wall of the rotating plate. The limiting protrusion can slide synchronously with the rotating head assembly in the limiting groove. The limiting groove limits the pitch angle range of the rotating head assembly on the rotating head seat by limiting the sliding distance of the limiting protrusion.

[0009] As a further improvement of this utility model, the first horizontal rotating shaft includes a female screw and a connecting screw. The U-shaped structure of the rotating plate has a round hole and an elongated hole on each of its two side walls. The rotating head seat has a horizontal shaft hole. One end of the female screw has a neck with an elongated cross-section and a head with an outwardly flared shape. The female screw passes through the horizontal shaft hole of the rotating head seat and the round hole on one side wall of the U-shaped structure of the rotating plate. The neck of the female screw is circumferentially stopped and inserted into the elongated hole on the other side wall of the U-shaped structure of the rotating plate. The connecting screw is attached to the other end of the female screw. The moving screw connection also includes a butterfly washer, a T-shaped bushing, and a friction washer. The butterfly washer is sleeved on the outside of the female screw and tightly clamped between the head of the female screw and the other side wall of the U-shaped rotating plate structure. The smaller diameter end of the T-shaped bushing is inserted into the torsion spring receiving groove, and the larger diameter end of the T-shaped bushing is tightly clamped between the side wall of the U-shaped rotating plate structure and the end face of the outer side wall of the torsion spring receiving groove of the rotating head seat. The friction washer circumferentially covers the end face of the support boss and is tightly clamped between the side wall of the U-shaped rotating plate structure and the end face of the support boss.

[0010] As a further improvement of this utility model, the pull pin is circumferentially stopped and axially slidable in the pull pin slide of the rotating head seat. The pull pin is provided with an axially extending threaded hole. The adjusting handle is axially stopped and circumferentially rotatable in the rotating head seat. The adjusting handle is provided with a stud that is movably screwed into the threaded hole of the pull pin.

[0011] As a further improvement of this utility model, the rotating head assembly further includes a connecting seat, a rotating shaft bushing, and a locking screw. The lower end of the rotating head assembly is provided with a connecting rotating shaft, and a rotating shaft bushing is formed on the connecting seat. The rotating shaft bushing, made of elastic material, is fixedly inserted into the rotating shaft bushing of the connecting seat. An annular outwardly expanding flange covering the upper end surface of the rotating shaft bushing is formed on the upper end surface of the rotating shaft bushing. The lower end of the rotating head assembly is provided with a connecting rotating shaft, which is rotatable around a vertical axis and tightly inserted into the rotating shaft bushing. The annular outwardly expanding flange at the upper end of the rotating shaft bushing is tightly clamped between the lower end surface of the rotating head assembly and the upper end surface of the rotating shaft bushing of the connecting seat. An adjusting threaded hole is provided on the side wall of the rotating shaft bushing, and the rotating shaft bushing is provided with an adjusting screw. The clearance hole is directly opposite the vent hole. The locking screw is movably screwed into the adjusting threaded hole, and the end of the locking screw abuts against the outer surface of the connecting shaft at the lower end of the rotating head seat through the clearance hole of the rotating shaft bushing. The pull pin slide of the rotating head seat extends vertically and penetrates the connecting shaft downward. The lower end of the pull pin slide forms a countersunk head structure with an outwardly widened dimension. The adjusting handle is an inverted T-shaped structure with an upper outer diameter smaller than the lower outer diameter. The upper end of the adjusting handle is accommodated in the countersunk head structure, and the lower end of the adjusting handle is accommodated in the annular space formed between the lower end surface of the connecting shaft of the rotating head seat and the inner hole of the rotating shaft bushing of the connecting seat. The lower end of the adjusting handle also forms an adjusting handle for pinching with fingers. The adjusting handle extends out of the outer side of the lower end of the rotating shaft bushing of the connecting seat.

[0012] As a further improvement of this utility model, the rotating head assembly also includes a panel and decorative covers. The panel is provided with several mounting holes for mounting a display. The panel can be mounted on the bottom surface of the rotating plate U-shaped structure by rotating around a second horizontal axis perpendicular to the first horizontal axis by a set angle. The two decorative covers can be detachably covered on the rotating plate U-shaped structure.

[0013] The beneficial technical effects of this utility model are as follows: This utility model provides elastic torque to the rotating head assembly through an elastic element. The elastic torque and the weight of the monitor are balanced on the rotating head assembly, so that the monitor will not automatically tilt down after long-term use after the tilt angle is adjusted. When adjusting the tilt angle of the monitor, it is only necessary to change the position of the other end of the elastic element by sliding the adjustment handle to drive the pull pin. The structure of the adjustment handle and the pull pin being movably screwed together, and the elastic element is a torsion spring. When adjusting, only the adjustment handle needs to be rotated to adjust the tilt angle of the monitor. As the adjustment handle is rotated, the height displacement of the pull pin is driven, which increases or decreases the torsion spring force. The tension of the torsion spring drives the pull pin to keep the adjustment handle always positioned on the support plane of the rotating head seat or connecting seat. This method facilitates the adjustment of the torsion spring force without the need for hardware tools. Attached Figure Description

[0014] Figure 1 This is a perspective view of the rotating head of this utility model;

[0015] Figure 2 This is a front view of the rotating head of this utility model in a head-up view.

[0016] Figure 3 This is a front view of the rotating head of this utility model from a downward angle.

[0017] Figure 4 This is a top view of the rotating head of this utility model.

[0018] Figure 5 This is an exploded perspective view of the rotating head of this utility model;

[0019] Figure 6 This is a three-dimensional diagram illustrating the structural principle of the pull pin adjusting torsion spring of this utility model.

[0020] Figure 7 This is a perspective view of the rotating head seat of this utility model;

[0021] Figure 8 This is a perspective view of the rotating plate of this utility model;

[0022] Figure 9 This is a perspective view of the pull pin of this utility model;

[0023] Figure 10 This is a front view illustrating the structural principle of this utility model;

[0024] Figure 11 for Figure 10 Sectional view along line AA;

[0025] Figure 12 This is a top view of the structural principle of this utility model;

[0026] Figure 13 for Figure 12Sectional view along the BB direction. Detailed Implementation

[0027] Example: A rapid adjustment mechanism for head tilt and rotation includes a head base 7 assembly and a head assembly. The head assembly is rotatable around a first horizontal axis and is mounted on the head base 7 assembly. It also includes an elastic element, a pull pin 1, and an adjustment handle 2. The pull pin 1 is slidably mounted inside the head base 7 assembly. One end of the elastic element is connected to an eccentric position of the head assembly, and the other end of the elastic element is connected to the pull pin 1. The adjustment handle 2 is mounted on the outside of the head base 7 assembly. The adjustment handle 2 can drive the pull pin 1 to slide and stop and position the pull pin 1 when it slides to any position. The sliding of the pull pin 1 can cause the elastic element to stretch or contract, thereby changing the elastic torque applied by the elastic element to the side wall of the head assembly. When adjusting the hovering tilt angle of monitors of different sizes, simply adjust the handle 2 to slide the pin 1 within the rotating head base 7 assembly, thereby changing the position of the other end of the elastic element. This changes the elastic force of the elastic element. By adjusting the elastic force, it is made to balance the weight of the monitor on the rotating head, thus allowing the rotating head to remain in a stable hovering position after the tilt angle is adjusted. It will not automatically tilt down even after long-term use. This monitor tilt angle adjustment mechanism has a simple structure and is easy to operate.

[0028] The elastic element is a torsion spring 3 sleeved on a horizontal rotating shaft. A first torsion spring insertion hole 4 is provided on the side wall of the rotating head assembly, and a second torsion spring insertion hole 5 is provided on the upper side wall of the pull pin 1. Both ends of the torsion spring 3 are respectively inserted into the first torsion spring insertion hole 4 and the second torsion spring insertion hole 5, thus fixing them to the rotating head assembly and the pull pin 1. By sliding the pull pin 1, the position of the other end of the torsion spring 3 changes, thereby altering the torque of the torsion spring 3. The torsion spring 3 provides rotational torque to the rotating head assembly, balancing the gravitational torque applied to the rotating head assembly by the display. Alternatively, the elastic element can also be a tension spring or a compression spring sheet; this is an equivalent replacement structure easily conceived by those skilled in the art based on this patent and falls within the scope of protection of this patent.

[0029] The rotating head assembly includes a U-shaped rotating plate 6 and a rotating head base 7 assembly, both of which include a rotating head base 7. The rotating plate 6 is fitted onto the outside of the rotating head base 7. Symmetrical first torsion spring insertion holes 4 are provided on both sides of the U-shaped structure of the rotating plate 6. The upper end of the pull pin 1 is located in the middle of the U-shaped structure of the rotating plate 6. The torsion spring 3 includes two symmetrically designed coils. One end of each coil is inserted into the first torsion spring insertion hole 4 on both sides of the rotating plate 6, and the other end passes through the second torsion spring insertion hole 5 at the upper end of the pull pin 1. The two coils of the torsion spring 3 can be set independently or connected together to form a double-body torsion spring 3 structure. The symmetrical arrangement of the two coils prevents the first horizontal rotating shaft from tilting, ensuring smooth adjustment of the rotating head's pitch angle.

[0030] The rotating head seat 7 has a pull pin slide 8 in the middle, and torsion spring receiving grooves 9 are formed on both sides of the rotating head seat 7. The bottom surface of the torsion spring receiving groove 9 is connected to the pull pin slide 8 through a hollow notch. A support boss 10 is formed on the bottom surface of the torsion spring receiving groove 9. The two coils of the torsion spring 3 are respectively received in the torsion spring receiving grooves 9 on both sides of the rotating head seat 7 and sleeved on the outside of the support boss 10. The other ends of the two coils of the torsion spring 3 extend into the pull pin slide 8 through the hollow notch and are inserted into the second torsion spring insertion hole 5 at the upper end of the pull pin 1 in the pull pin slide 8. The torsion spring receiving grooves 9 on both sides of the rotating head seat 7 are used to receive the torsion spring 3, which can protect the torsion spring 3 and prevent foreign objects from entering the coils of the torsion spring 3 and causing damage to the torsion spring 3.

[0031] Limiting grooves 11 are formed on the outer circumferential outer wall of the support boss 10 within the torsion spring receiving grooves 9 on both sides of the rotating head seat 7. At least one side wall of the rotating plate 6 is provided with a limiting protrusion 12. The limiting protrusion 12 can slide synchronously within the limiting groove 11 along with the rotating head assembly. The limiting groove 11 limits the pitch angle range of the rotating head assembly on the rotating head seat 7 by restricting the sliding distance of the limiting protrusion 12. Through the cooperation between the limiting groove 11 on the outer circumferential outer wall of the rotating head seat 7 and the limiting protrusion 12 formed on the rotating plate 6, the rotation angle of the rotating head assembly is limited, ensuring that the rotating head assembly can only rotate and adjust within a certain angle range. This prevents excessive rotation angle from causing damage to the display due to collision, and also prevents failure of the elastic components. The limiting protrusion 12 on the rotating plate 6 can be formed by bending from the side wall of the rotating plate 6, or it can be a rivet riveted to the side wall of the rotating plate 6, or a screw locked to the side wall of the rotating plate 6.

[0032] The first horizontal rotating shaft includes a female screw 13 and a connecting screw 14. The rotating plate 6 has round holes 15 and elongated holes 16 on its two side walls of the U-shaped structure. The rotating head seat 7 has a horizontal shaft hole 17. One end of the female screw 13 has a neck with an elongated cross-section and an outwardly flared head. The female screw 13 passes through the horizontal shaft hole 17 of the rotating head seat 7 and the round hole 15 on one side wall of the U-shaped structure of the rotating plate 6. The neck of the female screw 13 is circumferentially stopped and inserted into the elongated hole 16 on the other side wall of the U-shaped structure of the rotating plate 6. The connecting screw 14 is movably screwed to the other end of the female screw 13. [Further details omitted] The device includes a butterfly-shaped washer 18, a T-shaped bushing 19, and a friction washer 20. The butterfly-shaped washer 18 is sleeved on the outside of the female screw 13 and tightly clamped between the head of the female screw 13 and the other side wall of the U-shaped structure of the rotating plate 6. The smaller diameter end of the T-shaped bushing 19 is inserted into the torsion spring receiving groove 9, and the larger diameter end of the T-shaped bushing 19 is tightly clamped between the side wall of the U-shaped structure of the rotating plate 6 and the end face of the outer side wall of the torsion spring receiving groove 9 of the rotating head seat 7. The friction washer 20 covers the end face of the support boss 10 in a circumferential direction and is tightly clamped between the side wall of the U-shaped structure of the rotating plate 6 and the end face of the support boss 10. In addition to adjusting the pitch angle by means of torsion spring 3 between rotating plate 6 and rotating head seat 7, rotational friction is also generated between rotating plate 6 and rotating head through butterfly shim 18, T-shaped bushing 19 and friction shim 20 to prevent rapid head-down or head-up when adjusting the pitch angle of rotating head assembly, thus achieving smooth adjustment.

[0033] The pull pin 1, which is circumferentially stopped and axially slidable, is installed in the pull pin slide 8 of the rotating head seat 7. The pull pin 1 has an axially extending threaded hole. The adjusting handle 2, which is axially stopped and circumferentially rotatable, is installed on the rotating head seat 7. The adjusting handle 2 has a stud that is movably screwed into the threaded hole of the pull pin 1. During adjustment, simply rotating the adjusting handle 2 will cause the pull pin 1 to slide linearly. The operation is convenient, and the adjustment accuracy is high, allowing for minute angle adjustments.

[0034] The rotating head seat 7 assembly also includes a connecting seat 21, a rotating shaft bushing 22, and a locking screw. The lower end of the rotating head seat 7 is provided with a connecting rotating shaft 28. A rotating shaft bushing is formed on the connecting seat 21. The rotating shaft bushing 22, made of elastic material, is fixedly inserted into the rotating shaft bushing of the connecting seat 21. An annular outwardly expanding flange covering the upper end surface of the rotating shaft bushing is formed on the upper end of the rotating shaft bushing 22. The connecting rotating shaft 28, which is rotatable around a vertical axis, is tightly inserted into the rotating shaft bushing 22. The annular outwardly expanding flange at the upper end of the rotating shaft bushing is tightly clamped between the lower end surface of the rotating head seat 7 and the upper end surface of the rotating shaft bushing of the connecting seat 21. An adjusting threaded hole 23 is provided on the side wall of the rotating shaft bushing, and the rotating shaft bushing 22 is provided with a threaded hole aligning with the adjusting threaded hole 23. The locking screw is movably screwed into the adjusting threaded hole 23 through the clearance hole 24 of the rotating shaft bushing, and the end of the locking screw abuts against the outer surface of the connecting shaft 28 at the lower end of the rotating head seat 7 through the clearance hole 24 of the rotating shaft bushing. The pull pin slide 8 of the rotating head seat 7 extends vertically and passes through the connecting shaft 28 downward. The lower end of the pull pin slide 8 forms a countersunk head structure with an outwardly widened size. The adjusting handle 2 is an inverted T-shaped structure with an upper outer diameter smaller than the lower outer diameter. The upper end of the adjusting handle 2 is accommodated in the countersunk head structure, and the lower end of the adjusting handle 2 is accommodated in the annular space formed between the lower end face of the connecting shaft 28 of the rotating head seat 7 and the inner hole of the rotating shaft bushing of the connecting seat 21. The lower end of the adjusting handle 2 also forms an adjusting handle for pinching with fingers. The adjusting handle extends out of the outer side of the lower end of the rotating shaft bushing of the connecting seat 21. The rotating head 7 is installed in the connecting seat 21 and rotates around a vertical axis, which can realize the function of adjusting the display left and right. In addition to being installed in the rotating head 7, the pull pin 1 can also be installed in the connecting seat 21. The adjustment handle 2 is at the bottom of the connecting seat 21, making the adjustment operation convenient and aesthetically pleasing.

[0035] The rotating head assembly also includes a panel 25 and decorative covers 26. The panel 25 has several mounting holes for mounting a display. The panel 25 is mounted on the bottom surface of the U-shaped structure of the rotating plate 6, and can rotate around a second horizontal axis 27 perpendicular to the first horizontal axis. The two decorative covers 26 are detachably attached to the U-shaped structure of the rotating plate 6. By mounting the display with a panel 25 that rotates around the second horizontal axis 27, the horizontal tilt angle of the display can be adjusted. Installing decorative covers 26 on both sides of the rotating plate 6 improves the overall aesthetics of the rotating head.

Claims

1. A rapid tilt and rotation adjustment mechanism for a rotating head, comprising a rotating head base assembly and a rotating head assembly, wherein the rotating head assembly is rotatably mounted on the rotating head base assembly about a first horizontal axis, characterized in that: It is also provided with an elastic element, a pull pin (1) and an adjusting handle (2). The pull pin is slidably installed in the rotating head assembly. One end of the elastic element is connected to the eccentric position of the rotating head assembly, and the other end of the elastic element is connected to the pull pin. The adjusting handle is installed on the outside of the rotating head assembly. The adjusting handle can drive the pull pin to slide and stop and position the pull pin at any position. The sliding of the pull pin can drive the elastic element to stretch or contract, thereby changing the elastic torque applied by the elastic element to the side wall of the rotating head assembly.

2. The head tilt and rotation rapid adjustment mechanism according to claim 1, characterized in that: The elastic element is a torsion spring (3) sleeved on a horizontal rotating shaft. The side wall of the rotating head assembly is provided with a first torsion spring insertion hole (4), and the upper side wall of the pull pin is provided with a second torsion spring insertion hole (5). The two ends of the torsion spring are respectively inserted into the first torsion spring insertion hole and the second torsion spring insertion hole, and then fixedly connected to the rotating head assembly and the pull pin.

3. The head tilt and rotation rapid adjustment mechanism according to claim 2, characterized in that: The rotating head assembly includes a U-shaped rotating plate (6), and the rotating head seat assembly includes a rotating head seat (7). The rotating plate is sleeved on the outside of the rotating head seat. The two side walls of the U-shaped structure of the rotating plate are respectively provided with first torsion spring insertion holes. The upper end of the pull pin is located in the middle of the U-shaped structure of the rotating plate. The torsion spring includes two sets of coils designed symmetrically. One end of the two sets of coils of the torsion spring is inserted into the first torsion spring insertion holes on the two side walls of the rotating plate, and the other end of the two sets of coils of the torsion spring passes through the second torsion spring insertion hole at the upper end of the pull pin.

4. The head tilt and rotation rapid adjustment mechanism according to claim 3, characterized in that: A pull pin slide (8) is formed in the middle of the rotating head seat, and torsion spring receiving grooves (9) are formed on both sides of the rotating head seat. The bottom surface of the torsion spring receiving groove is connected to the pull pin slide through a hollow notch. A support boss (10) is formed on the bottom surface of the torsion spring receiving groove. The two coils of the torsion spring are respectively received in the torsion spring receiving grooves on both sides of the rotating head seat and sleeved on the outside of the support boss. The other ends of the two coils of the torsion spring extend into the pull pin slide through the hollow notch and are inserted into the second torsion spring insertion hole at the upper end of the pull pin in the pull pin slide.

5. The head tilt and rotation rapid adjustment mechanism according to claim 4, characterized in that: Limiting grooves (11) are formed on the outer circumferential outer wall of the support boss in the torsion spring receiving groove on both sides of the rotating head seat. A limiting protrusion (12) is provided on at least one side wall of the rotating plate. The limiting protrusion can slide synchronously with the rotating head assembly in the limiting groove. The limiting groove limits the pitch angle range of the rotating head assembly on the rotating head seat by limiting the sliding distance of the limiting protrusion.

6. The head tilt and rotation rapid adjustment mechanism according to claim 4, characterized in that: The first horizontal rotating shaft includes a female screw (13) and a connecting screw (14). The U-shaped structure of the rotating plate has a round hole (15) and an elongated hole (16) on its two side walls, and the rotating head seat has a horizontal shaft hole (17). One end of the female screw has a neck with an elongated cross-section and a head with an outwardly flared shape. The female screw passes through the horizontal shaft hole of the rotating head seat and the round hole on one side wall of the U-shaped structure of the rotating plate. The neck of the female screw is inserted into the elongated hole on the other side wall of the U-shaped structure of the rotating plate in a circumferential direction. The connecting screw is movably screwed to the other end of the female screw. It is also provided with a butterfly gasket (18), a T-shaped bushing (19) and a friction gasket (20). The butterfly gasket is sleeved on the outside of the female screw and tightly clamped between the head of the female screw and the other side wall of the rotating plate U-shaped structure. The smaller diameter end of the T-shaped bushing is inserted into the torsion spring receiving groove, and the larger diameter end of the T-shaped bushing is tightly clamped between the side wall of the rotating plate U-shaped structure and the outer side wall end face of the torsion spring receiving groove of the rotating head seat. The friction gasket covers the end face of the support boss in the circumferential direction and is tightly clamped between the side wall of the rotating plate U-shaped structure and the end face of the support boss.

7. The head tilt and rotation rapid adjustment mechanism according to claim 4, characterized in that: The pull pin is circumferentially stopped and axially slidable, installed in the pull pin slide of the rotating head seat. The pull pin has an axially extending threaded hole. The adjusting handle is axially stopped and circumferentially rotatable, installed on the rotating head seat. The adjusting handle has a stud that is movably screwed into the threaded hole of the pull pin.

8. The head tilt and rotation rapid adjustment mechanism according to claim 7, characterized in that: The rotating head assembly also includes a connecting seat (21), a rotating shaft bushing (22), and a locking screw. The lower end of the rotating head is provided with a connecting rotating shaft (28). A rotating shaft bushing is formed on the connecting seat. The rotating shaft bushing, made of elastic material, is fixedly inserted into the rotating shaft bushing of the connecting seat. An annular outwardly expanding flange covering the upper end surface of the rotating shaft bushing is formed on the upper end of the rotating head seat. The lower end of the rotating head is provided with a connecting rotating shaft. The connecting rotating shaft is tightly inserted into the rotating shaft bushing and can rotate around a vertical axis. The annular outwardly expanding flange at the upper end of the rotating shaft bushing is tightly clamped between the lower end surface of the rotating head seat and the upper end surface of the rotating shaft bushing of the connecting seat. An adjusting threaded hole (23) is provided on the side wall of the rotating shaft bushing. The rotating shaft bushing is provided with an adjusting threaded hole. The clearance hole (24) is directly opposite the hole. The locking screw is movably screwed into the adjusting threaded hole, and the end of the locking screw abuts against the outer side of the connecting shaft at the lower end of the rotating head seat through the clearance hole of the rotating shaft bushing. The pull pin slide of the rotating head seat extends vertically and penetrates the connecting shaft downward. The lower end of the pull pin slide forms a countersunk head structure with an outwardly widened size. The adjusting handle is an inverted T-shaped structure with an upper outer diameter smaller than the lower outer diameter. The upper end of the adjusting handle is accommodated in the countersunk head structure, and the lower end of the adjusting handle is accommodated in the annular space formed between the lower end face of the connecting shaft of the rotating head seat and the inner hole of the rotating shaft bushing of the connecting seat. The lower end of the adjusting handle also forms an adjusting handle for pinching with fingers. The adjusting handle extends out of the outer side of the lower end of the rotating shaft bushing of the connecting seat.

9. The head tilt and rotation rapid adjustment mechanism according to claim 1, characterized in that: The rotating head assembly also includes a panel (25) and a decorative cover (26). The panel is provided with several mounting holes for mounting a display. The panel can be mounted on the bottom surface of the rotating plate U-shaped structure by rotating around a second horizontal axis (27) perpendicular to the first horizontal axis by a set angle. The two decorative covers can be detachably covered on the rotating plate U-shaped structure.

Images