Pitch damping adjustment mechanism

Abstract

The utility model relates to medical instrument technical field provides a kind of pitch damping adjustment mechanism, including connecting seat, the one end of connecting seat is provided with mounting portion, rotating portion is rotatably arranged in the mounting portion, friction pad is arranged between rotating portion and mounting portion, the one end of connecting seat away from mounting portion is provided with elastic disc, the side of elastic disc away from rotating portion is provided with abutting piece, the abutting piece is slidably arranged in connecting seat along horizontal direction, the abutting piece and elastic disc abut, adjusting piece is provided on the connecting seat, the adjusting piece is used to adjust the position of abutting piece, the utility model can improve axial pre-tightening force, maintain structural stability under heavy load condition.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a pitch damping adjustment mechanism. Background Technology

[0002] The content in this section only provides background information related to this invention and may not constitute prior art.

[0003] Pitch damping adjustment mechanisms are commonly used for multi-angle precision pitch angle adjustment of the optical components at the front end of surgical microscopes. They typically need to meet the following requirements: be able to support heavy lenses or camera modules, which usually weigh more than five kilograms; be able to allow surgeons to perform stepless hovering with one hand, as surgeons need to frequently adjust the viewing angle during surgery; and be able to ensure that the lens remains stable for extended periods of use to prevent accidental lens shift during surgery.

[0004] Traditional pitch damping adjustment mechanisms often use a connecting shaft, friction pad, and locking nut. However, in actual use, due to the limited axial preload of the locking nut, the threaded pair of the locking nut is prone to plastic deformation under heavy load when bearing heavy lenses or camera modules. Furthermore, single-point locking can easily lead to uneven wear of the friction pad, which in turn causes pitch angle adjustment to become stuck, affecting the precision of surgical operations. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a pitch damping adjustment mechanism that can improve the axial preload and maintain structural stability under heavy load conditions.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A pitch damping adjustment mechanism includes a connecting seat, one end of which is provided with a mounting part. A rotating part is rotatably disposed within the mounting part. A friction pad is disposed between the rotating part and the mounting part. An elastic disc is disposed at the end of the connecting seat away from the mounting part. An abutment piece is disposed on the side of the elastic disc away from the rotating part. The abutment piece is slidably disposed on the connecting seat in a horizontal direction and abuts against the elastic disc. An adjusting member is provided on the connecting seat for adjusting the position of the abutment piece.

[0008] In some possible embodiments, the adjusting member is configured as an adjusting bolt, the abutment plate has a mounting hole, the adjusting member slides through the mounting hole, the rotating part has an adjusting hole, and the adjusting member passes through the connecting seat and is threadedly connected to the mounting part and the adjusting hole.

[0009] In some possible embodiments, multiple adjusting members are provided, and multiple mounting holes are also provided. The mounting holes are provided one-to-one with the adjusting members, and the multiple mounting holes are evenly arranged along the circumference of the abutment piece. Multiple adjusting holes are also provided, and the multiple adjusting holes are provided one-to-one with the adjusting members.

[0010] In some possible embodiments, the connecting seat has a mounting groove on the side away from the mounting part, the elastic disc and the abutment piece are both disposed in the mounting groove, the bottom of the mounting groove has a strip hole, the strip hole is disposed through the mounting part, the number of the strip holes is adapted to the number of adjusting members, and the strip holes are used for the adjusting members to pass through.

[0011] In some possible embodiments, the slot is arc-shaped, the center of the arc coincides with the rotation axis of the rotating part, and the slot is slidably connected to the adjusting member.

[0012] In some possible embodiments, a friction pad is provided in the mounting groove, one side of which abuts against the bottom of the mounting groove, and the other side abuts against the side of the elastic disc away from the abutment piece.

[0013] In some possible embodiments, the elastic disc is configured as a frustum shape, with a larger diameter at one end along the central axis and a smaller diameter at the other end. Multiple elastic discs are provided, and the multiple elastic discs are flipped and stacked on top of each other, forming an adjustment cavity between adjacent elastic discs.

[0014] In some possible embodiments, the rotating part has a through hole coaxially, and a sleeve is coaxially fixed at one end of the rotating part near the abutment piece. The inner diameter of the sleeve is adapted to the diameter of the through hole. The friction pad has a first through hole for the sleeve to pass through, the mounting part has a second through hole for the sleeve to pass through, the second through hole is connected to the mounting groove, the elastic disc has a third through hole for the sleeve to pass through, and the abutment piece has a fourth through hole for the sleeve to pass through.

[0015] In some possible embodiments, a barrier is coaxially fixed at the end of the mounting portion away from the abutment piece, and the height of the barrier is adapted to the thickness of the friction pad.

[0016] In summary, the technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0017] 1. By using multiple adjusting parts to evenly tighten instead of a single locking nut, and in conjunction with the abutment plate and elastic disc, the axial preload is distributed and applied, effectively avoiding stress concentration at a single point. This ensures that the friction pad can maintain constant pressure even when the torque is too high, thus effectively preventing loosening and falling off. At the same time, the arc-shaped strip hole in the mounting slot provides rotation guidance and rotation limit, further enhancing the deformation resistance under heavy loads. This effectively improves the ability to stably bear heavy loads in high-precision scenarios such as surgical microscopes.

[0018] 2. By opening a mounting slot and accommodating both the elastic disc and the abutment piece within it, the overall size of the device is effectively reduced, making it more suitable for high-precision applications such as surgical microscopes. This avoids the excessive structural size hindering surgeons from performing operations and effectively improves the reliability of the device in actual use.

[0019] 3. By providing friction pads on both sides of the mounting section, the friction of the device can be effectively improved, thereby enhancing its ability to bear heavy loads in high-precision scenarios to a certain extent;

[0020] 4. By setting multiple elastic discs and flipping and stacking them together, adjustment cavities can be formed between adjacent elastic discs, further improving the range of friction adjustment. For heavy-load applications, the number of elastic discs can be adjusted according to actual needs. As the load weight increases, the number of elastic discs can be increased accordingly, further improving the applicability of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the installation structure of the adjusting member according to an embodiment of the present utility model;

[0023] Figure 3 This is an exploded structural diagram of an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the mounting slot in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the baffle strip according to an embodiment of the present utility model;

[0026] Figure 6 This is a cross-sectional view of the elastic disc according to an embodiment of the present invention.

[0027] Icons: 1. Connecting seat; 11. Mounting part; 12. Mounting groove; 13. Strip hole; 14. Second through hole; 15. Enclosure; 2. Rotating part; 21. Adjusting hole; 22. Through hole; 23. Sleeve; 3. Friction pad; 31. First through hole; 4. Elastic disc; 41. Adjusting cavity; 42. Third through hole; 5. Abutting piece; 51. Mounting hole; 52. Fourth through hole; 6. Adjusting component. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] The following is for reference Figures 1 to 6 The present invention will be described in further detail below.

[0030] Reference Figure 1 , Figure 2 and Figure 3 A pitch damping adjustment mechanism includes a connecting seat 1, a mounting part 11 at one end of the connecting seat 1, a rotating part 2 rotatably disposed inside the mounting part 11, a friction pad 3 disposed between the rotating part 2 and the mounting part 11, an elastic disc 4 disposed at the end of the connecting seat 1 away from the mounting part 11, an abutment piece 5 disposed on the side of the elastic disc 4 away from the rotating part 2, the abutment piece 5 is slidably disposed on the connecting seat 1 in the horizontal direction, and abuts against the elastic disc 4, and an adjusting member 6 is disposed on the connecting seat 1 for adjusting the position of the abutment piece 5.

[0031] Reference Figure 3 In one embodiment of this utility model, the adjusting member 6 is set as an adjusting bolt, the abutting piece 5 has a mounting hole 51, the adjusting member 6 is slidably inserted into the mounting hole 51, the rotating part 2 has an adjusting hole 21, and the adjusting member 6 passes through the connecting seat 1 and is threadedly connected to the mounting part 11 and the adjusting hole 21.

[0032] Among them, reference Figure 3 Multiple adjustment components 6 are provided, and multiple mounting holes 51 are also provided. The mounting holes 51 are set one-to-one with the adjustment components 6. The multiple mounting holes 51 are evenly arranged along the circumference of the abutment piece 5. Multiple adjustment holes 21 are also provided, and the multiple adjustment holes 21 are set one-to-one with the adjustment components 6.

[0033] Reference Figure 3 , Figure 4 and Figure 5As one embodiment of this utility model, three adjusting members 6 are provided, and the angle between the line connecting the three adjusting members 6 and the central axis is 120°.

[0034] Among them, reference Figure 4 The connecting seat 1 has a mounting groove 12 on the side away from the mounting part 11. The elastic disc 4 and the abutment piece 5 are both set in the mounting groove 12. The bottom of the mounting groove 12 has a strip hole 13. The strip hole 13 is set through the mounting part 11. The number of strip holes 13 is adapted to the number of adjusting parts 6. The strip holes 13 are used for the adjusting parts 6 to pass through.

[0035] Reference Figure 4 and Figure 5 The slot 13 is arc-shaped, and the center of the arc of the slot 13 coincides with the rotation axis of the rotating part 2. The slot 13 is slidably connected to the adjusting part 6.

[0036] The arc-shaped slot 13 allows the adjusting element 6 to slide, simplifying the alignment adjustment during assembly. It provides rotational guidance and rotational limit, further enhancing the resistance to deformation under heavy loads.

[0037] Reference Figure 3 A friction pad 3 is provided in the mounting groove 12. One side of the friction pad 3 abuts against the bottom of the mounting groove 12, and the other side abuts against the side of the elastic disc 4 away from the abutment piece 5.

[0038] Reference Figure 6 The elastic disc 4 is shaped like a frustum, with a larger diameter at one end along its central axis and a smaller diameter at the other end. Multiple elastic discs 4 are arranged, and they are stacked and flipped together, forming an adjustment cavity 41 between adjacent discs 4. As one embodiment of this utility model, see [reference needed]. Figure 6 This utility model uses three elastic discs 4 that are stacked and flipped together.

[0039] The structure of multiple circumferentially evenly distributed adjustment parts 6 and elastic discs 4 is stacked to ensure that the pressure is evenly transmitted to the friction pad 3. Combined with the synchronous rotation mechanism of the abutment piece 5 and the rotating part 2, the relative sliding friction during the rotation process is eliminated, thus avoiding structural loosening.

[0040] The friction pad 3 is subjected to balanced force, and the rotational resistance is linearly controllable. It supports smooth stepless adjustment and precise hovering for single-handed operation, which can reduce surgeon fatigue and prevent accidental lens shift during surgery.

[0041] Reference Figure 1 and Figure 3The rotating part 2 has a through hole 22 coaxially formed. A sleeve 23 is coaxially fixed to one end of the rotating part 2 near the abutment plate 5. The inner diameter of the sleeve 23 matches the diameter of the through hole 22. A first through hole 31 for the sleeve 23 to pass through is formed on the friction pad 3. A second through hole 14 for the sleeve 23 to pass through is formed on the mounting part 11, and the second through hole 14 communicates with the mounting groove 12. A third through hole 42 for the sleeve 23 to pass through is formed on the elastic disc 4, and a fourth through hole 52 for the sleeve 23 to pass through is formed on the abutment plate 5. The hollow sleeve 23 facilitates cable passage, prevents cable entanglement from affecting rotation, and reduces the need for additional wiring components.

[0042] Reference Figure 5 A retaining wall 15 is coaxially fixed at the end of the mounting part 11 away from the abutment piece 5, and the height of the retaining wall 15 is adapted to the thickness of the friction pad 3.

[0043] The implementation principle of the pitch damping adjustment mechanism proposed in this embodiment of the utility model is as follows:

[0044] By using multiple adjusting parts 6 to evenly tighten instead of a single locking nut, and in conjunction with the abutment piece 5 and the elastic disc 4, the axial preload is distributed and applied, effectively avoiding stress concentration at a single point. This ensures that the friction pad 3 can maintain constant pressure even when the torque is too high, thus effectively preventing loosening and detachment. At the same time, the annular groove of the fixing seat provides rotation guidance and rotation limit, further enhancing the resistance to deformation under heavy loads. This effectively improves the ability to stably bear heavy loads in high-precision scenarios such as surgical microscopes.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pitch damping adjustment mechanism, characterized in that: The device includes a connecting seat (1), one end of which is provided with a mounting part (11). A rotating part (2) is rotatably provided inside the mounting part (11). A friction pad (3) is provided between the rotating part (2) and the mounting part (11). An elastic disc (4) is provided at the end of the connecting seat (1) away from the mounting part (11). An abutment piece (5) is provided on the side of the elastic disc (4) away from the rotating part (2). The abutment piece (5) is slidably provided on the connecting seat (1) in the horizontal direction. The abutment piece (5) abuts against the elastic disc (4). An adjusting member (6) is provided on the connecting seat (1). The adjusting member (6) is used to adjust the position of the abutment piece (5).

2. The pitch damping adjustment mechanism according to claim 1, characterized in that: The adjusting member (6) is set as an adjusting bolt. The abutment plate (5) has an installation hole (51). The adjusting member (6) slides through the installation hole (51). The rotating part (2) has an adjusting hole (21). The adjusting member (6) passes through the connecting seat (1) and is threadedly connected to the mounting part (11) and the adjusting hole (21).

3. The pitch damping adjustment mechanism according to claim 2, characterized in that: The adjusting member (6) is provided in multiple ways, and the mounting hole (51) is also provided in multiple ways. The mounting hole (51) is provided in a one-to-one correspondence with the adjusting member (6). The multiple mounting holes (51) are evenly provided along the circumference of the abutment piece (5). The adjusting hole (21) is also provided in multiple ways, and the multiple adjusting holes (21) are provided in a one-to-one correspondence with the adjusting member (6).

4. The pitch damping adjustment mechanism according to claim 2, characterized in that: The connecting seat (1) has an installation groove (12) on the side away from the mounting part (11). The elastic disc (4) and the abutment piece (5) are both disposed in the installation groove (12). The bottom of the installation groove (12) has a strip hole (13). The strip hole (13) passes through the mounting part (11). The number of strip holes (13) is adapted to the number of adjusting members (6). The strip hole (13) is used for the adjusting members (6) to pass through.

5. The pitch damping adjustment mechanism according to claim 4, characterized in that: The strip hole (13) is arc-shaped, and the center of the arc of the strip hole (13) coincides with the rotation axis of the rotating part (2). The strip hole (13) is slidably connected to the adjusting member (6).

6. The pitch damping adjustment mechanism according to claim 4, characterized in that: A friction pad (3) is provided in the mounting groove (12). One side of the friction pad (3) abuts against the bottom of the mounting groove (12), and the other side abuts against the side of the elastic disc (4) away from the abutment piece (5).

7. The pitch damping adjustment mechanism according to claim 6, characterized in that: The elastic disc (4) is shaped like a frustum. The diameter of one end of the elastic disc (4) along the central axis is larger and the diameter of the other end is smaller. There are multiple elastic discs (4). The multiple elastic discs (4) are flipped and stacked on each other, and an adjustment cavity (41) is formed between adjacent elastic discs (4).

8. The pitch damping adjustment mechanism according to claim 4, characterized in that: The rotating part (2) has a through hole (22) coaxially formed. A sleeve (23) is coaxially fixed at one end of the rotating part (2) near the abutment piece (5). The inner diameter of the sleeve (23) is matched with the diameter of the through hole (22). The friction pad (3) has a first through hole (31) for the sleeve (23) to pass through. The mounting part (11) has a second through hole (14) for the sleeve (23) to pass through. The second through hole (14) is connected to the mounting groove (12). The elastic disc (4) has a third through hole (42) for the sleeve (23) to pass through. The abutment piece (5) has a fourth through hole (52) for the sleeve (23) to pass through.

9. The pitch damping adjustment mechanism according to claim 1, characterized in that: The mounting part (11) is coaxially fixed with a guard (15) at one end away from the abutment piece (5), and the height of the guard (15) is adapted to the thickness of the friction pad (3).

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