Adjustable tripod head

Abstract

The utility model discloses a kind of adjustable gimbals, belong to technical field, including lower shaft seat, the lower shaft seat is rotatably connected with the interface seat by lower connecting shaft, the interface seat is rotatably connected with upper shaft seat by upper connecting shaft, lower straight slot and upper straight slot are opened in the interface seat, lower adjusting shaft is slidably installed in the lower straight slot, upper adjusting shaft is slidably installed in the upper straight slot, lower adjusting bolt and upper adjusting bolt are also rotatably installed on the interface seat, the lower adjusting bolt is threadedly connected with lower adjusting shaft, the upper adjusting bolt is threadedly connected with upper adjusting shaft, lower U-shaped groove is opened in the lower shaft seat;The real-time locking logic of the adjustable gimbals by screw transmission, the face contact locking of adjusting shaft and U-shaped groove can offset the influence of rotating assembly gap and tolerance, reduce angular deviation, without repeatedly fine-tuning, improve operation convenience and adjustment accuracy.

Description

Technical Field

[0001] This utility model specifically relates to an adjustable gimbal, belonging to the technical field. Background Technology

[0002] With the diversification of projector application scenarios, users are increasingly demanding greater flexibility and precision in adjusting the projection angle. Existing projectors with manual gimbal adjustment generally achieve angle adjustment through rotating components to adapt to different installation needs such as front projection, ceiling projection, and desktop projection. Their adjustment structures mostly adopt fastening bolts, elastic positioning grooves, or friction pairs.

[0003] The core flaw of this type of manual pan-tilt head lies in its separate operation of adjusting before fixing. When adjusting, the locking mechanism must be loosened first, rotated to the target angle, and then tightened or locked in place. The process lacks real-time positioning and pre-fixing mechanisms. Due to the gaps and tolerances of the rotating components and the deformation of the elastic parts, the target angle is prone to deviation from the actual fixed angle, resulting in a skewed projected image and making it difficult to achieve fine adjustment. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable gimbal to address the shortcomings of existing technologies.

[0005] An adjustable gimbal includes a lower pivot seat, a connecting seat rotatably connected to the lower pivot seat via a lower connecting shaft, and an upper pivot seat rotatably connected above the connecting seat via an upper connecting shaft. The connecting seat has a lower straight groove and an upper straight groove. A lower adjusting shaft is slidably installed in the lower straight groove, and an upper adjusting shaft is slidably installed in the upper straight groove. A lower adjusting bolt and an upper adjusting bolt are also rotatably installed on the connecting seat. The lower adjusting bolt is threadedly connected to the lower adjusting shaft, and the upper adjusting bolt is threadedly connected to the upper adjusting shaft. The lower pivot seat has a lower U-shaped groove, and the upper pivot seat has an upper U-shaped groove. The end of the lower adjusting shaft extends into the interior of the lower U-shaped groove, and the end of the upper adjusting shaft extends into the interior of the upper U-shaped groove.

[0006] Furthermore, a turntable is fixedly installed on the top surface of the upper shaft seat, and a threaded sleeve is rotatably sleeved on the outside of the turntable. A locking bolt is threadedly connected to the outer wall of the threaded sleeve, and one end of the locking bolt extending into the inside of the threaded sleeve abuts against the outer wall of the turntable.

[0007] Furthermore, an upper shaft hole is provided above the connecting seat, extending through it front to back, and a lower shaft hole is provided below the connecting seat, extending through it left to right. The lower connecting shaft is rotatably installed inside the lower shaft hole, and the upper connecting shaft is rotatably installed inside the upper shaft hole.

[0008] Furthermore, the connecting seat has a lower through hole that runs through its front and back and an upper through hole that runs through its left and right. The upper through hole is located above the lower through hole. The lower adjusting bolt is rotatably connected inside the lower through hole, and the upper adjusting bolt is rotatably installed inside the upper through hole.

[0009] Furthermore, the lower straight groove extends through the connecting seat from left to right, and the upper straight groove extends through the connecting seat from front to back, with the upper straight groove located above the lower straight groove.

[0010] Furthermore, the lower shaft seat has a knurled bolt for fixing the projector on its inner bottom surface, and the lower shaft seat has a socket hole in which the knurled bolt is inserted.

[0011] Beneficial effects: 1. This utility model uses a real-time locking structure with threaded transmission between the lower adjusting bolt, lower adjusting shaft, lower U-shaped groove and the upper adjusting bolt, upper adjusting shaft, upper U-shaped groove. The surface contact locking effectively offsets the superposition of gaps and tolerances in the rotating components, greatly reducing angular deviation, achieving fine adjustment, and meeting the requirements of high-precision projection.

[0012] 2. This utility model provides a 360° rotational fine-tuning dimension for the projector through the rotating connection structure of the turntable and the threaded sleeve, effectively expanding the adjustment range of the gimbal and adapting to complex projection scenarios such as front projection, rear projection, and side projection. After adjustment, tightening the locking bolt on the outer wall of the threaded sleeve can achieve real-time locking through friction, making the operation simple and efficient. Attached Figure Description

[0013] Figure 1 This is a side view of the structure of this utility model; Figure 2 This is a front view structural diagram of the present utility model; Figure 3 This is a cross-sectional structural diagram of the present invention; Figure 4 This is a bottom view of the structure of this utility model; Figure 5 This is a schematic diagram of the structure of the connector seat in the concealed state in this utility model; Figure 6 This is a schematic diagram of the connecting seat in this utility model.

[0014] In the diagram: 1. Lower shaft seat; 2. Connecting seat; 3. Upper shaft seat; 4. Turntable; 5. Threaded sleeve; 6. Locking bolt; 7. Knurled bolt; 8. Lower connecting shaft; 9. Upper connecting shaft; 10. Lower adjusting shaft; 11. Lower adjusting bolt; 12. Upper adjusting shaft; 13. Upper adjusting bolt; 14. Lower U-groove; 15. Lower shaft hole; 16. Upper shaft hole; 17. Lower straight groove; 18. Upper straight groove; 19. Lower through hole; 20. Upper through hole; 21. Upper U-groove. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-6 As shown, an adjustable gimbal includes a lower shaft seat 1, a connecting seat 2 rotatably connected to the lower shaft seat 1 via a lower connecting shaft 8, and an upper shaft seat 3 rotatably connected above the connecting seat 2 via an upper connecting shaft 9. The connecting seat 2 has a lower straight groove 17 and an upper straight groove 18. A lower adjusting shaft 10 is slidably installed in the lower straight groove 17, and an upper adjusting shaft 12 is slidably installed in the upper straight groove 18. A lower adjusting bolt 11 and an upper adjusting bolt 13 are also rotatably installed on the connecting seat 2. The lower adjusting bolt 11 is threadedly connected to the lower adjusting shaft 10, and the upper adjusting bolt 13 is threadedly connected to the upper adjusting shaft 12. A lower U-shaped groove 14 is provided on the lower shaft seat 1, and an upper U-shaped groove 21 is provided on the upper shaft seat 3. The end of the lower adjusting shaft 10 extends into the interior of the lower U-shaped groove 14, and the end of the upper adjusting shaft 12 extends into the interior of the upper U-shaped groove 21.

[0017] Specifically, the lower shaft seat 1 rotates in the pitch direction by engaging with the lower shaft hole 15 of the connecting seat 2 via the lower connecting shaft 8; the connecting seat 2 rotates in the horizontal direction by engaging with the upper shaft hole 16 of the upper shaft seat 3 via the upper connecting shaft 9. During adjustment, rotating the lower adjusting bolt 11 in the lower through hole 19 of the connecting seat 2 causes the lower adjusting shaft 10 in the lower straight slot 17 to be threaded, pushing the end of the lower adjusting shaft 10 to press against the inner wall of the lower U-shaped groove 14 of the lower shaft seat 1, thus fixing the pitch angle in real time; rotating the upper adjusting bolt 13 in the upper through hole 20 causes the upper adjusting shaft 12 in the upper straight slot 18 to be threaded, causing the end of the upper adjusting shaft 12 to press against the upper U-shaped groove 21 of the upper shaft seat 3, thus locking the horizontal angle in real time, forming a synchronous operation of adjustment and locking.

[0018] As a technical optimization of this utility model, a turntable 4 is fixedly installed on the top surface of the upper shaft seat 3. A threaded sleeve 5 is rotatably sleeved on the outside of the turntable 4. A locking bolt 6 is threadedly connected to the outer wall of the threaded sleeve 5. One end of the locking bolt 6 extends into the inside of the threaded sleeve 5 and abuts against the outer wall of the turntable 4.

[0019] Specifically, the turntable 4 on the top surface of the upper shaft seat 3 is rotatably sleeved with the threaded sleeve 5, and can be rotated 360° relative to the threaded sleeve 5 for fine adjustment to adapt to different projection requirements; when rotated to the target position, the locking bolt 6 on the outer wall of the threaded sleeve 5 is tightened so that one end of it extending into the inside of the threaded sleeve 5 is tightly abutted against the outer wall of the turntable 4, and the rotation dimension is locked and fixed by friction.

[0020] As a technical optimization of this utility model, the upper shaft hole 16 is provided above the connecting seat 2 and extends through it from front to back. The lower shaft hole 15 is provided below the connecting seat 2 and extends through it from left to right. The lower connecting shaft 8 is rotatably installed inside the lower shaft hole 15, and the upper connecting shaft 9 is rotatably installed inside the upper shaft hole 16.

[0021] Specifically, a lower shaft hole 15 is provided below the connector 2, running through the left and right sides, to provide a rotational mounting reference for the lower connecting shaft 8, ensuring that the pitch rotation of the lower shaft seat 1 and the connector 2 is accurately performed around the axis; an upper shaft hole 16 is provided above the connector 2, running through the front and back sides, to provide stable support for the upper connecting shaft 9, ensuring that the horizontal rotation axis of the upper shaft seat 3 and the connector 2 are consistent, and avoiding offset.

[0022] As a technical optimization of this utility model, the connecting seat 2 is provided with a lower through hole 19 that runs through its front and back and an upper through hole 20 that runs through its left and right. The upper through hole 20 is located above the lower through hole 19. The lower adjusting bolt 11 is rotatably connected to the inside of the lower through hole 19, and the upper adjusting bolt 13 is rotatably installed inside the upper through hole 20.

[0023] Specifically, the lower through hole 19 on the connecting seat 2 extends from front to back, providing rotational support for the lower adjusting bolt 11 and ensuring that it has no radial offset when rotating; the upper through hole 20 extends from left to right and is located above the lower through hole 19, providing an installation reference for the upper adjusting bolt 13, making the thread fit between the upper adjusting bolt 13 and the upper adjusting shaft 12 more precise, and realizing the linear reciprocating motion of the adjusting shaft.

[0024] As a technical optimization of this utility model, the lower straight groove 17 extends through the connecting seat 2 from left to right, and the upper straight groove 18 extends through the connecting seat 2 from front to back, with the upper straight groove 18 located above the lower straight groove 17.

[0025] Specifically, the lower straight groove 17 extends through the connecting seat 2 from left to right, matching the left and right movement direction of the lower adjusting shaft 10, ensuring that the lower adjusting shaft 10 can be precisely extended into the lower U-shaped groove 14; the upper straight groove 18 extends through the connecting seat 2 from front to back and is located above the lower straight groove 17, matching the front and back movement direction of the upper adjusting shaft 12, ensuring that the end of the upper adjusting shaft 12 accurately abuts against the upper U-shaped groove 21, achieving bidirectional interference-free locking.

[0026] As a technical optimization of this utility model, the inner bottom surface of the lower shaft seat 1 is provided with a knurled bolt 7 for fixing the projector, and the lower shaft seat 1 is provided with an insertion hole, into which the knurled bolt 7 is inserted.

[0027] Specifically, the lower shaft seat 1 has a pre-set insertion hole, and the knurled bolt 7 is inserted into the insertion hole. Through the cooperation of the knurled bolt 7 and the projector mounting hole, the projector is firmly fixed on the inner bottom surface of the lower shaft seat 1, forming a stable installation reference and ensuring that there is no relative displacement between the projector and the pan-tilt unit during the adjustment process.

[0028] This solution solves the angle deviation problem of traditional manual gimbals by using dual-axis linkage adjustment and a real-time threaded locking structure. The overall working principle is as follows: The projector is installed and fixed by the knurled bolts 7 on the inner bottom surface of the lower shaft seat 1. The knurled bolts 7 are inserted into the preset holes of the lower shaft seat 1 to ensure that the projector is firmly connected to the pan-tilt unit and to prevent the equipment from shifting during the adjustment process. Pitch angle adjustment: The lower shaft seat 1 is rotatably connected to the lower shaft hole 15 of the connecting seat 2 through the lower connecting shaft 8. The lower shaft hole 15 passes through the connecting seat 2 from left to right. The connecting seat 2 can rotate back and forth around the lower connecting shaft 8, thereby driving the projector to achieve pitch angle adjustment. Horizontal dimension adjustment: The connecting seat 2 is rotatably connected to the upper shaft hole 16 of the upper shaft seat 3 through the upper connecting shaft 9. The upper shaft hole 16 passes through the connecting seat 2 front and back, and the upper shaft seat 3 can rotate left and right around the upper connecting shaft 9 to realize the horizontal angle adjustment of the projector; Additional rotation adjustment: The turntable 4 on the top surface of the upper shaft seat 3 is rotatably connected to the threaded sleeve 5, and can be rotated 360° for fine adjustment to adapt to different projection orientation requirements.

[0029] Pitch dimension locking: Rotate the lower adjusting bolt 11 in the lower through hole 19 of the connecting seat 2. The lower through hole 19 runs through the front and back and is threaded with the lower adjusting shaft 10 in the lower straight slot 17. Push the end of the lower adjusting shaft 10 to press against the inner wall of the lower U-shaped groove 14 of the lower shaft seat 1, and fix the pitch angle in real time without adjustment gap. Horizontal dimension locking: Rotate the upper adjusting bolt 13 in the upper through hole 20 of the rotating connecting seat 2. The upper through hole 20 passes through left and right and is threaded with the upper adjusting shaft 12 in the upper straight groove 18. This causes the end of the upper adjusting shaft 12 to press against the upper U-shaped groove 21 of the upper shaft seat 3, thereby locking the horizontal angle instantly. Additional locking: After fine-tuning by rotation, tighten the locking bolt 6 on the outer wall of the threaded sleeve 5 so that its end abuts against the outer wall of the turntable 4, thereby enhancing the fixing effect of the rotation dimension.

[0030] Through the real-time locking logic of the threaded drive, the surface contact locking between the adjusting shaft and the U-groove can offset the influence of the clearance and tolerance of the rotating components, reduce angular deviation, and at the same time eliminate the need for repeated fine-tuning, thereby improving the ease of operation and adjustment accuracy.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An adjustable gimbal, characterized in that: The assembly includes a lower shaft seat (1), on which a connecting seat (2) is rotatably connected via a lower connecting shaft (8). An upper shaft seat (3) is rotatably connected above the connecting seat (2) via an upper connecting shaft (9). The connecting seat (2) has a lower straight groove (17) and an upper straight groove (18). A lower adjusting shaft (10) is slidably installed in the lower straight groove (17), and an upper adjusting shaft (12) is slidably installed in the upper straight groove (18). The connecting seat (2) also has a rotatably mounted... The lower adjusting bolt (11) and the upper adjusting bolt (13) are threaded together. The lower adjusting bolt (11) is threaded together with the lower adjusting shaft (10). The upper adjusting bolt (13) is threaded together with the upper adjusting shaft (12). The lower shaft seat (1) is provided with a lower U-shaped groove (14). The upper shaft seat (3) is provided with an upper U-shaped groove (21). The end of the lower adjusting shaft (10) extends into the interior of the lower U-shaped groove (14). The end of the upper adjusting shaft (12) extends into the interior of the upper U-shaped groove (21).

2. The adjustable gimbal as described in claim 1, characterized in that: A turntable (4) is fixedly installed on the top surface of the upper shaft seat (3). A threaded sleeve (5) is rotatably sleeved on the outside of the turntable (4). A locking bolt (6) is threaded on the outer wall of the threaded sleeve (5). One end of the locking bolt (6) extends into the inside of the threaded sleeve (5) and abuts against the outer wall of the turntable (4).

3. The adjustable gimbal as described in claim 1, characterized in that: The connecting seat (2) has an upper shaft hole (16) that runs through it from front to back, and a lower shaft hole (15) that runs through it from left to right. The lower connecting shaft (8) is rotatably installed inside the lower shaft hole (15), and the upper connecting shaft (9) is rotatably installed inside the upper shaft hole (16).

4. The adjustable gimbal as described in claim 1, characterized in that: The connecting seat (2) has a lower through hole (19) that runs through it front to back and an upper through hole (20) that runs through it left to right. The upper through hole (20) is located above the lower through hole (19). The lower adjusting bolt (11) is rotatably connected inside the lower through hole (19), and the upper adjusting bolt (13) is rotatably installed inside the upper through hole (20).

5. The adjustable gimbal as described in claim 1, characterized in that: The lower straight groove (17) extends through the connecting seat (2) from left to right, and the upper straight groove (18) extends through the connecting seat (2) from front to back. The upper straight groove (18) is located above the lower straight groove (17).

6. The adjustable gimbal as described in claim 1, characterized in that: The lower shaft seat (1) has a knurled bolt (7) for fixing the projector on its inner bottom surface. The lower shaft seat (1) has a socket hole, and the knurled bolt (7) is inserted into the socket hole.

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