A steplessly adjustable pan / tilt head and recording mechanism

Abstract

The present invention relates to the field of camera technology, and discloses a steplessly adjustable pan-tilt head and recording mechanism. The pan-tilt head includes a pan-tilt head base, a horizontal rotating frame, a pitch frame, and a quick-release plate connected to the top of the pitch frame. The horizontal rotating frame is mounted on the pan-tilt head base, and the horizontal rotating frame is also provided with a locking wrench for locking the horizontal rotating frame and the pan-tilt head base; the pitch frame is arranged on the horizontal rotating frame, and an eccentric adjustment assembly is provided in the pitch frame. The eccentric adjustment assembly includes a lifting seat, a driving rod, an eccentric shaft, and a piston. The driving rod drives the lifting seat and the eccentric shaft to move up and down, thereby realizing stepless adjustment of the distance between the eccentric shaft and the axis of the pitch shaft. Through such a structural design, the eccentric distance of the eccentric shaft in the pan-tilt head pitch adjustment process can be steplessly adjusted by controlling the driving rod, thereby realizing stepless adjustment of the dynamic balance force of the pitch frame.

Description

Technical Field

[0001] The present invention relates to the field of camera technology, in particular to a steplessly adjustable pan / tilt platform and a camera / recording mechanism. Background Art

[0002] The pan / tilt head is a supporting device for video cameras, still cameras and other recording equipment. During the shooting process, the recording equipment needs to be quickly installed and fixed.

[0003] In order to meet different shooting requirements, such as pitch shooting or rotating in different horizontal directions to shoot at different angles, the gimbal needs to be able to be adjusted in various directions during use. However, the gimbal adjustment structure of some existing recording mechanisms is complex and the operation is cumbersome, making the adjustment process not flexible and fast enough, and unable to achieve dynamic balance in the adjustment process. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In response to advances in filming and videography technology, the present invention provides a steplessly adjustable pan / tilt head and recording mechanism. This steplessly adjustable pan / tilt head allows for stepless adjustment of the eccentricity of the eccentric axis, thereby achieving stepless adjustment of the dynamic balancing force of the tilt / tilt mechanism. Furthermore, the head can be steplessly adjusted in horizontal rotation and quickly locked for convenient operation. This solves the problems of existing recording mechanisms, which suffer from complex adjustment mechanisms, cumbersome operation, and the inability to achieve dynamic balancing.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stepless adjustable pan-tilt head, the stepless adjustable pan-tilt head comprising a pan-tilt head base, a horizontal rotation frame, a pitch frame and a quick-release plate connected to the top of the pitch frame, the horizontal rotation frame is mounted on the pan-tilt head base, the horizontal rotation frame is also provided with a locking wrench for locking the horizontal rotation frame and the pan-tilt head base, the rotating shaft of the pitch frame is inserted into the shaft hole of the horizontal rotation frame, the pitch frame pitches relative to the horizontal rotation frame around the axis of the rotating shaft, the horizontal rotation frame makes horizontal movement with the central axis of the pan-tilt head base, and the pitch frame is provided with an offset The eccentric adjustment component includes a lifting seat, a driving rod, an eccentric shaft, and a piston. The lifting seat is embedded in the inner side of the pitch frame and can slide along the vertical direction of the pitch frame. The eccentric shaft is rotatably connected to the bottom of the lifting seat. The driving rod vertically passes through the lifting seat and the bottom end abuts the upper part of the eccentric shaft. The bottom of the eccentric shaft abuts the top of the piston. A spring assembly is provided in the pan / tilt base. The bottom of the piston abuts the top of the spring assembly. The driving rod drives the lifting seat and the eccentric shaft to move up and down, thereby realizing stepless adjustment of the eccentric shaft from the axis center of the pitch frame.

[0008] In a possible implementation, the driving rod is adjusted to rise and fall by a driving mechanism.

[0009] In one possible implementation, the driving mechanism includes a turbine and a worm, the top end of the driving rod is fixed to the turbine, one end of the worm is connected to the knob, and the other end of the worm is engaged with the turbine, so that the driving rod can be raised and lowered by rotating the worm to drive the turbine.

[0010] In one possible implementation, the gimbal base includes a first damping adjustment component, which includes a first concentric ring, a first movable concentric ring and a first adjustment ring. The ring wall of the first movable concentric ring is inserted between the ring walls of the first concentric rings. The first movable concentric ring and the ring walls of the first concentric rings are filled with damping oil. The first adjustment ring is provided with an internal thread and is sleeved on the first movable concentric ring. The first movable concentric ring is driven up and down by the first adjustment ring to achieve damping adjustment when the horizontal rotating frame rotates horizontally.

[0011] In a possible implementation, the locking wrench is connected to a guide pin, and the locking wrench drives the inclined surface of the bottom end of the guide pin to enter the wall of the first concentric ring, thereby locking the horizontal rotating frame and the pan / tilt head base.

[0012] In one possible implementation, a second concentric ring and a second damping adjustment member are further provided on one side of the pitch frame. The second damping adjustment member includes a second movable concentric ring and a second adjustment ring. The second adjustment ring is provided with an internal thread and is sleeved on the second movable concentric ring. The walls between the second movable concentric ring and the second concentric ring are filled with damping oil. The second movable concentric ring is driven to insert into or move away from the second concentric ring through the second adjustment ring to achieve damping adjustment of the pitch adjustment process of the pitch frame.

[0013] In one possible implementation, a locking knob is further provided on the other side of the pitch frame, and a wedge is connected to the end of the locking knob. The locking knob drives the wedge to move away from the locking knob, thereby squeezing the limit blocks on both sides of the wedge to move outward, so that the limit blocks squeeze the inner walls of the horizontal rotation frame respectively, thereby achieving locking and fixation of the pitch frame and the horizontal rotation frame.

[0014] In a possible implementation, the spring assembly includes multiple springs and a spring seat. The spring seat is sleeved in the first movable concentric ring. Multiple cavities are arranged in a ring shape in the spring seat. The multiple cavities are used to accommodate the multiple springs.

[0015] In order to solve the above technical problems, the present invention also provides a technical solution, providing a recording mechanism, which includes the above-mentioned stepless adjustable pan-tilt head.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the present invention provides a stepless adjustable pan / tilt head and recording mechanism, which has the following beneficial effects:

[0018] The steplessly adjustable pan-tilt head comprises a pan-tilt head base, a horizontal rotating frame, a pitch frame, and a quick-release plate connected to the top of the pitch frame. The horizontal rotating frame is mounted on the pan-tilt head base, and a locking wrench for locking the horizontal rotating frame and the pan-tilt head base is also provided on the horizontal rotating frame. An eccentric adjustment assembly is provided in the pitch frame, and the eccentric adjustment assembly comprises a lifting seat, a drive rod, an eccentric shaft, and a piston. The driving rod drives the lifting seat and the eccentric shaft to move up and down, thereby achieving stepless adjustment of the distance between the eccentric shaft and the center of the pitch axis. Through such a structural design, the eccentric distance of the eccentric shaft during the pan-tilt head pitch adjustment process can be adjusted by controlling the drive rod, thereby achieving dynamic balance during the pitch adjustment process. In addition, the horizontal rotating frame can be steplessly adjusted in the horizontal rotation direction and quickly locked, making the operation flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a first schematic diagram of the overall structure of the steplessly adjustable pan / tilt platform of the present invention;

[0020] Figure 2 This is a second schematic diagram of the overall structure of the steplessly adjustable pan / tilt platform of the present invention (the eccentric axis is away from the center of the pitch axis);

[0021] Figure 3 It is a schematic structural diagram of the stepless adjustable pan / tilt head of the present invention in a disassembled state;

[0022] Figure 4 This is a third schematic diagram of the overall structure of the steplessly adjustable pan / tilt platform of the present invention (the eccentric axis is away from the center of the pitch axis);

[0023] Figure 5 This is a fourth schematic diagram of the overall structure of the steplessly adjustable pan / tilt platform of the present invention (the eccentric axis and the pitch axis coincide with each other);

[0024] Figure 6 It is a structural schematic diagram of the driving mechanism of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the locking mechanism on one side of the pitch frame of the present invention;

[0026] Figure 8 It is a schematic structural diagram of the locking wrench in the present invention;

[0027] Figure 9yes Figure 2 A sectional side view of the steplessly adjustable pan / tilt head along plane AA is shown;

[0028] Figure 10 yes Figure 2 A cross-sectional view of the steplessly adjustable pan / tilt head shown along plane AA;

[0029] Figure 11 yes Figure 2 A cross-sectional view of the steplessly adjustable pan / tilt head along plane BB is shown;

[0030] Figure 12 yes Figure 4 A cross-sectional view of the steplessly adjustable pan / tilt head along the CC plane is shown;

[0031] Figure 13 yes Figure 5 Cross-section of the steplessly adjustable pan / tilt head along the DD plane.

[0032] In the figure: 1. Pitch frame; 2. Horizontal rotation frame; 3. Pan / tilt head base; 4. Quick release plate; 5. Locking wrench; 11. Rotating shaft; 31. Center axis; 6. Eccentric adjustment assembly; 61. Lifting seat; 62. Drive rod; 63. Eccentric shaft; 64. Piston; 7. Spring assembly; 611. Turbine; 612. Worm; 613. Knob; 311. First concentric ring; 312. First movable concentric ring; 313. First adjustment ring; 51. Guide pin; 52. First boss; 53. Second boss; 54. Bottom end inclined surface; 111. Second concentric ring; 112. Second movable concentric ring; 113. Second adjustment ring; 8. Locking knob; 9. Wedge; 10. Limit block; 71. Spring; 72. Spring seat. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1-13, is a structural diagram of the stepless adjustable pan-tilt head and its specific components in the present invention. The stepless adjustable pan-tilt head includes a pan-tilt head base 3, a horizontal rotation frame 2, a pitch frame 1, and a quick-release plate 4 connected to the top of the pitch frame 1. The horizontal rotation frame 2 is installed on the pan-tilt head base 3. The horizontal rotation frame 2 is also provided with a locking wrench 5 for locking the horizontal rotation frame 2 and the pan-tilt head base 3. The rotating shaft 11 of the pitch frame 1 is inserted into the shaft hole of the horizontal rotation frame 2. The pitch frame 1 pitches relative to the horizontal rotation frame 2 around the axis of the rotating shaft 11. The horizontal rotation frame 2 moves horizontally around the central axis 31 of the pan-tilt head base 3. An eccentric adjustment group is provided in the pitch frame 1. Part 6, the eccentric adjustment assembly 6 includes a lifting seat 61, a driving rod 62, an eccentric shaft 63, and a piston 64. The lifting seat 61 is embedded in the inner side of the pitch frame 1 and can slide vertically along the pitch frame 1. The bottom of the lifting seat 61 is rotatably connected to the eccentric shaft 63. The driving rod 62 vertically passes through the lifting seat 61 and the bottom end abuts the upper part of the eccentric shaft 63. The bottom of the eccentric shaft 63 abuts the top of the piston. A spring assembly 7 is provided in the pan / tilt base 3. The bottom of the piston 64 abuts the top of the spring assembly 7. Driven by the driving rod 62, the lifting seat 61 and the eccentric shaft 63 are driven to move up and down, thereby realizing stepless adjustment of the eccentric shaft 63 from the axis of the pitch frame 1.

[0035] In the aforementioned pan / tilt head design of the present invention, the tilt frame's rotating shaft is inserted into the horizontal axis hole of the horizontal turret, allowing the tilt frame to pitch about the turret's axis. Simultaneously, the turret rotates horizontally about the center axis of the pan / tilt base, thereby achieving two-dimensional motion of the entire pan / tilt head. The eccentric adjustment assembly of the present invention allows for stepless adjustment of the eccentricity of the eccentric shaft from the tilt frame's axis, thereby ensuring stepless adjustment of the dynamic balancing force during the tilt frame's swinging motion.

[0036] When the eccentric axis is far away from the axis of the pitch frame, please refer to the instruction manual for details. Figure 2 、 Figure 4 and its cross section Figure 9-12 It can be understood that the eccentric shaft pushes the piston downward as the pitch frame swings, thereby compressing the spring assembly located below it, thereby generating a reverse torque and achieving a dynamic balancing effect.

[0037] When the eccentric axis coincides with the axis of the pitch frame, please refer to the instruction manual for details. Figure 5 and its cross section Figure 13 To understand, since the eccentricity is zero, at this time, no matter how the pitch frame swings, the eccentric axis will not be compressed and no reverse torque will be generated, and there is no dynamic balance effect at this time.

[0038] Among them, in a possible implementation scheme, the driving rod is adjusted to rise and fall by a driving mechanism. The driving mechanism here can be any mechanism used for driving the lifting and falling adjustment in the prior art, and this application does not strictly limit this. However, in order to further illustrate the technical implementation of this application, the embodiment of this application further provides a specific structure of one of the driving mechanisms, such as Figure 6 As shown, the driving mechanism includes a turbine 611 and a worm 612. The top of the driving rod 62 is fixed to the turbine 611, one end of the worm 612 is connected to the knob 613, and the other end of the worm 612 is engaged with the turbine 611, so that the driving rod 62 can be raised and lowered by rotating the worm 612 to drive the turbine 611 to rotate.

[0039] Among them, in a possible implementation scheme, the gimbal base 3 includes a first damping adjustment component, the first damping adjustment component includes a first concentric ring 311, a first movable concentric ring 312 and a first adjustment ring 313, the ring wall of the first movable concentric ring 312 is inserted between the ring walls of the first concentric ring 311, the ring walls of the first movable concentric ring 312 and the first concentric ring 311 are filled with damping oil, the first adjustment ring 313 is provided with an internal thread, and is sleeved on the first movable concentric ring 312, and the first movable concentric ring 312 is driven up and down by the first adjustment ring 313 to realize damping adjustment when the horizontal rotating frame 2 rotates horizontally.

[0040] The first concentric ring and the first movable concentric ring in this application correspond to each other at intervals. That is, the first movable concentric ring and the first concentric ring are interlaced rings, and the ring wall of the first movable concentric ring can be moved downward and inserted between the ring walls of the first concentric ring. At the same time, the inner surfaces of the ring walls of the two concentric rings are covered with viscous damping oil. The first movable concentric ring is driven up and down by a first adjustment ring with an internal thread. When the first movable concentric ring moves downward, the ring wall of the first movable concentric ring gradually inserts into the ring wall of the first concentric ring, so that the contact area between the two gradually increases, and the damping effect of the damping oil also increases accordingly. Conversely, when the first adjustment ring drives the first movable concentric ring to move upward, it disengages from the ring wall of the first concentric ring, so that the contact area between the two gradually decreases, and the damping effect of the damping oil also decreases accordingly.

[0041] The design of the first damping adjustment assembly allows for stepless damping adjustment during the horizontal rotation of the turret simply by rotating the first adjustment ring. Furthermore, the overall structure is compact, achieving a truly multifunctional, compact design.

[0042] Among them, in a possible implementation, the locking wrench 5 is connected to a guide pin 51, and the locking wrench 5 drives the bottom end inclined surface 54 of the guide pin 51 into the ring wall of the first concentric ring 311 to achieve locking of the horizontal rotating frame 2 and the pan-tilt base 3.

[0043] Among them, the cross-section of the bottom end inclined surface 54 of the guide pin 51 is designed to be narrow at the bottom and wide at the top as a whole, and the first boss 52 and the second boss 53 are respectively provided on the inner and outer sides of the bottom end inclined surface 54, and a guide groove for inserting the guide pin 51 is provided on the outer wall of the elastic component, specifically the outer wall of the spring seat. Similarly, a guide groove for inserting the guide pin is also provided on the ring wall of the first movable concentric ring 312, and bosses compatible with the first boss 52 and the second boss 53 are also designed on the ring walls of the first movable concentric ring 312 and the first concentric ring 311, and the ring wall gap of the first concentric ring 311 is also set to a conical design that is compatible with the design of the bottom end inclined surface 54 that is narrow at the bottom and wide at the top. When the locking wrench 5 drives the bottom end inclined surface 54 of the guide pin 51 to move downward, the bottom end inclined surface 54 gradually enters the ring wall of the first concentric ring 311, and the contact area gradually increases. At the same time, the first boss 52 and the second boss 53 are respectively adapted to the bosses on the first movable concentric ring 312 and the first concentric ring 311, so that the bottom end inclined surface 54 of the guide pin 51 is clamped with the ring wall of the first concentric ring 311, thereby realizing the locking of the horizontal rotation frame 2 and the pan-tilt base 3.

[0044] Among them, in one possible implementation, a second concentric ring 111 and a pitch damping adjustment member are also provided on one side of the pitch frame 1. The pitch damping adjustment member includes a second movable concentric ring 112 and a second adjustment ring 113. The second adjustment ring 113 is provided with an internal thread and is sleeved on the second movable concentric ring 112. The ring walls of the second movable concentric ring 112 and the second concentric ring 111 are filled with damping oil. The second movable concentric ring 112 is driven to insert into or move away from the second concentric ring 111 through the second adjustment ring 113 to realize the damping adjustment process of the pitch frame 1.

[0045] The working principle of the pitch damping adjustment member is the same as that of the first damping adjustment component, both of which utilize interlaced damping rings to drive the damping rings to insert or disengage with each other through the adjustment rings, thereby achieving stepless adjustment of the pitch damping.

[0046] Through the pitch damping adjustment part and the concentric ring design on one side of the pitch frame, the rotation of the second adjustment ring is used to achieve stepless damping adjustment of the pitch adjustment process of the pitch frame. The specific structural design between the gimbal components cooperates with each other, which not only simplifies the overall structural design but also achieves stepless damping adjustment.

[0047] By utilizing the design of the second damping adjustment component and the first damping adjustment component, stepless damping adjustment of the horizontal rotation process and stepless damping adjustment of the pitch adjustment process are achieved. Furthermore, combined with the design of the eccentric adjustment component, stepless adjustment of the eccentricity is achieved, thereby achieving dynamic balance of the pitch adjustment process.

[0048] Among them, in one possible implementation, a locking knob 8 is also provided on the other side of the pitch frame 1, and a wedge block 9 is connected to the end of the locking knob 8. The locking knob 8 drives the wedge block 9 to move away from the locking knob 8, thereby squeezing the limit blocks 10 on both sides of the wedge block 9 to move outward, so that the limit blocks 10 squeeze the inner walls of the horizontal rotation frame 2 respectively, thereby realizing the locking and fixation of the pitch frame 1 and the horizontal rotation frame 2.

[0049] Specifically, as a possible implementation, see Figure 7 As shown, the wedge block can be designed as a trapezoidal block, wherein one end of the trapezoidal block connected to the locking knob is the long side end face, and the other end is the short side end face, and the two limit blocks are movably arranged, specifically designed to be designed in the limit groove on the inner side of the outer cover plate of the pitch frame. Similarly, a corresponding limit groove is also designed on one side of the pitch frame. There is a channel between the two limit blocks, and the size of the channel gradually increases from the first port to the second port. As the locking knob drives the wedge block to move away from the locking knob, the short side end face of the wedge block enters the channel from the second port, and as the wedge block moves toward the first port, the limit blocks on the left and right of the wedge block are moved in opposite directions, so that the left and right limit blocks respectively squeeze the inner wall of the horizontal rotation frame, thereby realizing the locking and fixation of the pitch frame and the horizontal rotation frame.

[0050] Specifically, the wedge block can be an isosceles trapezoidal block, and the two limit blocks can also be designed as trapezoidal limit blocks respectively, and the trapezoidal limit blocks are adapted to the wedge block.

[0051] More specifically, the two limiting blocks of the present application can be designed as trapezoidal blocks respectively, and the waist edge end faces of the trapezoidal blocks are respectively matched with the waist edges of the wedge blocks.

[0052] In one possible implementation, the spring assembly 7 includes multiple springs 71 and a spring seat 72 . The spring seat 72 is sleeved in the first movable concentric ring 312 . Multiple cavities are arranged in a ring shape in the spring seat 72 . The multiple cavities are used to accommodate the multiple springs 71 .

[0053] The spring group with multiple springs can provide maximum reverse force and also improve the load-bearing capacity.

[0054] The above detailed description of the steplessly adjustable pan-tilt head in conjunction with the drawings in the specification of the present invention can be understood as follows: the steplessly adjustable pan-tilt head of the present application includes a pan-tilt head base, a horizontal rotation frame, a pitch frame, and a quick-release plate connected to the top of the pitch frame. The horizontal rotation frame is mounted on the pan-tilt head base, and the horizontal rotation frame is also provided with a locking wrench for locking the horizontal rotation frame and the pan-tilt head base. The pitch frame is provided with an eccentric adjustment assembly, which includes a lifting seat, a drive rod, an eccentric shaft, and a piston. The lifting seat and the eccentric shaft are driven up and down by the drive rod to achieve stepless adjustment of the distance between the eccentric shaft and the center of the pitch axis. Through such a structural design, the eccentric distance of the eccentric shaft in the pan-tilt adjustment process can be adjusted by controlling the drive rod, thereby achieving dynamic balance in the pitch adjustment process. In addition, the horizontal rotation frame can be steplessly adjusted in the horizontal rotation direction and quickly locked, making the operation flexible and convenient.

[0055] By further designing the first damping adjustment component, stepless damping adjustment in the horizontal rotation direction of the pan / tilt head can be achieved, with a simple structure and diversified functions.

[0056] Furthermore, by designing a second damping adjustment component on one side of the pitch frame, stepless damping adjustment of the pitch adjustment process can be achieved simply by rotating the adjustment ring, thereby ensuring the convenience and safety of the entire gimbal adjustment process.

[0057] The steplessly adjustable pan / tilt head design of the present invention is a two-dimensionally adjustable pan / tilt head with dynamic balancing capabilities. A first damping adjustment member enables stepless damping adjustment in the horizontal direction of the pan / tilt head, while a second damping adjustment member enables stepless damping adjustment in the pitch direction. The second damping adjustment member controls the pan / tilt head to maintain its position at any position, achieving stepless damping adjustment throughout the pitch adjustment process. As the pan / tilt head rotates, the eccentric shaft can be adjusted away from the pan / tilt head's axis, thereby pushing a piston to compress the spring, providing a reverse torque and achieving dynamic balancing.

[0058] On the basis of the damping pan-tilt head provided in the above embodiment, the present invention further provides a recording mechanism, which includes the above-mentioned steplessly adjustable pan-tilt head.

[0059] It should be noted that the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprises a ..." does not preclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A stepless adjustable pan / tilt head, characterized in that: The steplessly adjustable pan-tilt head comprises a pan-tilt head base, a horizontal rotation frame, a pitch frame and a quick-release plate connected to the top of the pitch frame, the horizontal rotation frame is mounted on the pan-tilt head base, the horizontal rotation frame is also provided with a locking wrench for locking the horizontal rotation frame and the pan-tilt head base, the rotating shaft of the pitch frame is inserted into the shaft hole of the horizontal rotation frame, the pitch frame pitches relative to the horizontal rotation frame around the axis of the rotating shaft, the horizontal rotation frame moves horizontally with the central axis of the pan-tilt head base, an eccentric adjustment component is provided in the pitch frame, and the eccentric adjustment component includes The invention comprises a lifting seat, a driving rod, an eccentric shaft and a piston. The lifting seat is embedded in the inner side of the pitch frame and can slide along the vertical direction of the pitch frame. The bottom of the lifting seat is rotatably connected to the eccentric shaft. The driving rod vertically passes through the lifting seat and the bottom end abuts the upper part of the eccentric shaft. The bottom of the eccentric shaft abuts the top of the piston. A spring assembly is provided in the pan / tilt base. The bottom of the piston abuts the top of the spring assembly. The driving rod drives the lifting seat and the eccentric shaft to move up and down, thereby realizing stepless adjustment of the distance between the eccentric shaft and the axis center of the pitch frame.

2. The steplessly adjustable pan / tilt head according to claim 1, characterized in that: The driving rod is adjusted to rise and fall by a driving mechanism.

3. The steplessly adjustable pan / tilt head according to claim 2, characterized in that: The driving mechanism includes a turbine and a worm. The top end of the driving rod is fixed to the turbine. One end of the worm is connected to the knob, and the other end of the worm is engaged with the turbine. The rotation of the worm drives the rotation of the turbine to realize the lifting and lowering adjustment of the driving rod.

4. The steplessly adjustable pan / tilt head according to claim 1, characterized in that: The gimbal base includes a first damping adjustment component, which includes a first concentric ring, a first movable concentric ring and a first adjustment ring. The ring wall of the first movable concentric ring is inserted between the ring walls of the first concentric rings. The first movable concentric ring and the ring walls of the first concentric rings are filled with damping oil. The first adjustment ring is provided with an internal thread and is sleeved on the first movable concentric ring. The first movable concentric ring is driven up and down by the first adjustment ring to realize damping adjustment when the horizontal rotating frame rotates horizontally.

5. The steplessly adjustable pan / tilt head according to claim 4, characterized in that: The locking wrench is connected to a guide pin, and the locking wrench drives the inclined surface of the bottom end of the guide pin to enter the wall of the first concentric ring, thereby locking the horizontal rotating frame and the pan / tilt head base.

6. The steplessly adjustable pan / tilt head according to claim 1, characterized in that: A second concentric ring and a second damping adjustment member are also provided on one side of the pitch frame. The second damping adjustment member includes a second movable concentric ring and a second adjustment ring. The second adjustment ring is provided with an internal thread and is sleeved on the second movable concentric ring. The walls between the second movable concentric ring and the second concentric ring are filled with damping oil. The second movable concentric ring is driven to insert into or move away from the second concentric ring through the second adjustment ring to achieve damping adjustment of the pitch adjustment process of the pitch frame.

7. The steplessly adjustable pan / tilt head according to claim 1, characterized in that: A locking knob is further provided on the other side of the pitch frame, and a wedge is connected to the end of the locking knob. The locking knob drives the wedge to move away from the locking knob, thereby squeezing the limit blocks on both sides of the wedge to move outward, so that the limit blocks respectively squeeze the inner walls of the horizontal rotation frame, thereby achieving locking and fixing of the pitch frame and the horizontal rotation frame.

8. The steplessly adjustable pan / tilt head according to claim 4, characterized in that: The spring assembly includes multiple springs and a spring seat. The spring seat is sleeved in the first movable concentric ring. Multiple cavities are arranged in an annular shape in the spring seat. The multiple cavities are used to accommodate the multiple springs.

9. A recording mechanism, characterized in that: The recording mechanism includes the steplessly adjustable pan / tilt head according to any one of claims 1 to 8.

Images