A gimbal rotating arm gap elimination structure
By combining the gimbal rotating base, nylon flat pads, and wave-shaped spring pads, the gap and backlash of the gimbal arm are eliminated, solving the problems of gimbal stability and accuracy, reducing the difficulty of processing and assembly, and controlling costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING UNITED OPTICS CORP
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-10
AI Technical Summary
Existing gimbals suffer from instability and accuracy issues when adjusted with multiple degrees of freedom due to excessive gaps. Furthermore, high-precision machining and assembly are difficult, increasing costs and complexity.
It adopts a gimbal rotating base, gimbal rotating base, nylon flat gasket and wave spring gasket structure, and realizes the linear movement of nylon gasket through threaded connection and elastic pre-tightening, eliminating axial clearance and backlash, and uses limit groove to limit the rotation angle.
It simplifies the processing and assembly process, reduces the requirements for high-precision parts, reduces costs and assembly difficulty, and improves the stability and accuracy of the gimbal.
Smart Images
Figure CN224479479U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gimbal design, and specifically designs a gimbal arm gap elimination structure. Background Technology
[0002] A gimbal is a mechanical device used to support and adjust the angle of equipment such as cameras, telescopes, and lasers. Its function is to allow for multi-degree-of-freedom adjustment, aligning the equipment with a target to meet shooting or observation needs. While providing multi-degree-of-freedom adjustment, it needs to possess a certain degree of stability and precision. If the gap is too large, backlash will occur, affecting the stability and precision of the structure. To reduce the gap and eliminate backlash, the parts must be manufactured to a certain precision level, or machined using a lathe. Improving the precision of the manufactured parts has a certain impact on cost control, and increasing the machining precision also increases the assembly difficulty later on. Summary of the Invention
[0003] To address the aforementioned problems, this utility model provides a gimbal arm clearance elimination structure, comprising a gimbal rotating base, a gimbal rotating seat, a nylon flat washer, a wave spring washer, and a tensioning screw. The gimbal rotating base has a through hole in the center, with circular grooves on both sides of the through hole. The gimbal rotating seat has two fixed arms, left and right. The tensioning screw passes through the right fixed arm of the gimbal rotating seat and the gimbal rotating base, and is threadedly connected to the left fixed arm of the gimbal rotating base. The nylon flat washer is located in the circular groove on the left side of the gimbal rotating base, and is threadedly connected to the tensioning screw, with its right side contacting the gimbal rotating base and its left side contacting the wave spring washer. The left side of the wave spring washer also contacts the gimbal rotating base. A nylon supporting flat washer is located in the circular groove on the right side of the gimbal rotating base, with its left side contacting the gimbal rotating base and its right side contacting the gimbal rotating seat. Because the nylon flat washer has a threaded inner hole, when the tensioning screw passes through the threaded inner hole of the nylon flat washer and connects to the gimbal rotating base, the elasticity of the wave spring washer itself will apply a preload to the nylon flat washer to the right. Therefore, when the tensioning screw rotates, the nylon flat washer can only move in a straight line and cannot rotate. When the nylon washer shifts to the right, while adhering to the gimbal rotating base, it is supported by the nylon support flat washer at the right end. The two sides of the gimbal rotating base are supported by the nylon flat washer and the nylon support flat washer respectively, the axial clearance disappears and the backlash is eliminated.
[0004] Furthermore, the fixed arm of the gimbal rotation base is provided with a limit groove, and the gimbal rotation base is provided with a limit screw that mates with the limit groove. This is used to limit the rotation angle of the gimbal rotation base.
[0005] Furthermore, the top of the gimbal's rotating base is equipped with connection holes. These holes are used to connect to devices such as cameras, telescopes, and lasers.
[0006] The above-mentioned technical solution of this utility model has the following beneficial technical effects: When the nylon washer connected by threads rotates with the tightening screw, the nylon washer can only move in a straight line due to the wave-shaped spring washer, which achieves the purpose of reducing the gap and eliminating backlash. This structure is simple to process, does not require high precision, and greatly reduces the assembly difficulty. It greatly improves the cost control and assembly difficulty of the product. Attached Figure Description
[0007] Figure 1 This is the front view of the gimbal arm clearance elimination structure;
[0008] Figure 2 This is a right-side cross-sectional view of the gimbal arm clearance elimination structure;
[0009] Figure 3 This is a top view of the gimbal arm clearance elimination structure.
[0010] Figure label:
[0011] 1: Gimbal rotating base; 2: Gimbal rotating body; 3: Nylon flat washer; 4: Wave spring washer; 5: Flat washer; 6: Tensioning screw; 7: Nylon support flat washer. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0013] like Figure 1-3As shown, a gimbal arm clearance elimination structure is provided, comprising a gimbal rotating base 2, a gimbal rotating base 1, a nylon flat washer 3, a wave spring washer 4, and a tensioning screw 6. The gimbal rotating base 2 has a through hole in the middle, and circular grooves on both sides of the through hole. The gimbal rotating base 1 has two fixed arms, left and right. The tensioning screw 6 passes through the fixed arm on the right side of the gimbal rotating base 1 and the gimbal rotating base 2, and is threadedly connected to the fixed arm on the left side of the gimbal rotating base 1. The nylon flat washer 3 is disposed in the circular groove on the left side of the gimbal rotating base 2, and is threadedly connected to the tensioning screw 6. Its right side contacts the gimbal rotating base 2, and its left side contacts the wave spring washer 4. The left side of the wave spring washer 4 contacts the gimbal rotating base 1. A nylon supporting flat washer 7 is disposed in the circular groove on the right side of the gimbal rotating base 2. The left side of the nylon supporting flat washer 7 contacts the gimbal rotating base 2, and its right side contacts the gimbal rotating base 1. A flat washer 5 is also provided between the nut of the tension screw 6 and the gimbal rotation base 1. Because the nylon flat washer 3 has a threaded inner hole, when the tension screw 6 passes through the threaded inner hole of the nylon flat washer 3 and connects with the gimbal rotation base 1, the elastic force of the wave spring washer 4 will apply a preload to the nylon flat washer 3 to the right. Therefore, when the tension screw 6 rotates, the nylon flat washer 3 can only move in a straight line and cannot rotate. When the nylon washer 3 is displaced to the right, while it is in contact with the gimbal rotation base 2, the nylon support flat washer 7 is supporting the gimbal rotation base 2 on both sides. The axial clearance disappears and the backlash is eliminated.
[0014] The fixed arm of the gimbal rotation base is provided with a limit groove, and the gimbal rotation base is provided with a limit screw that mates with the limit groove. This is used to limit the rotation angle of the gimbal rotation base.
[0015] The gimbal's rotating base has connection holes on its top. These holes are used to connect to devices such as cameras, telescopes, and lasers.
[0016] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A gimbal arm gap elimination structure, characterized in that, It consists of a gimbal rotating base, a gimbal rotating base, a nylon flat washer, a wave spring washer, and a tensioning screw. The gimbal rotating base has a through hole in the middle and circular grooves on both sides of the through hole. The gimbal rotating base has two fixing arms, left and right. The tensioning screw passes through the fixing arm on the right side of the gimbal rotating base and the gimbal rotating base, and is connected to the fixing arm on the left side of the gimbal rotating base by threads. The nylon flat washer is located in the circular groove on the left side of the gimbal rotating base and is connected to the tensioning screw by threads. Its right side contacts the gimbal rotating base, and its left side contacts the wave spring washer. The left side of the wave spring washer contacts the gimbal rotating base. A nylon support flat washer is located in the circular groove on the right side of the gimbal rotating base. The left side of the nylon support flat washer contacts the gimbal rotating base, and its right side contacts the gimbal rotating base.
2. The gimbal arm gap elimination structure according to claim 1, characterized in that, The fixed arm of the gimbal rotation base is provided with a limit groove, and the gimbal rotation base is provided with a limit screw that cooperates with the limit groove.
3. The gimbal arm gap elimination structure according to claim 1, characterized in that, The gimbal rotating base is provided with a connection hole on its top.