High-rigidity lightweight robot joint driving module
Patent Information
- Application Number
- CN202522398440.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-12
AI Technical Summary
Existing robot joint drive devices are susceptible to problems such as air leakage in cylinders and insufficient power output due to collisions, scratches, or impacts from foreign objects.
The robot adopts a high-rigidity, lightweight joint drive module, including a fixed base, drive cylinder, protective shell, and buffer mechanism. The protective shell is the first to contact the external object, and the buffer mechanism reduces the impact of the impact on the drive cylinder. The protective shell is made of aerospace-grade high-strength aluminum alloy and is combined with silicone pads to provide additional protection.
It effectively reduces air leakage and insufficient power in the cylinder caused by collision, scratching or impact from foreign objects, and improves the practicality and rigidity of the device.
Smart Images

Figure CN224928009U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotics technology, and in particular to a high-rigidity, lightweight robot joint drive module. Background Technology
[0002] The physical foundation of a robot includes its mechanical structure design, such as the type of joints, the length and strength of links, to ensure that the robot has good flexibility, stability, and motion accuracy. For example, the robotic arm of an industrial robot needs to be precisely designed to accurately complete tasks such as welding and assembly. Existing robot joint module drive devices typically use cylinders as the drive mechanism for robot joints. When the robot moves, especially in industrial or collaborative scenarios, the cylinders are susceptible to collisions, scratches, or impacts from foreign objects, which may lead to problems such as air leakage and insufficient power output. Utility Model Content
[0003] Therefore, it is necessary to provide a high-rigidity, lightweight robot joint drive module to address the aforementioned technical issues.
[0004] In order to solve the above-mentioned technical problems, the present invention solves the problem that the cylinder is susceptible to collision, scratching or impact from foreign objects, which may lead to cylinder leakage and insufficient power output through the following technical solution.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-rigidity, lightweight robot joint drive module includes: a fixed base, a drive cylinder fixedly mounted at one end of the fixed base, a telescopic rod movably connected to one end of the drive cylinder, fixed plates fixedly connected to both ends of the drive cylinder, two vertical plates fixedly connected to the top of the fixed plates, a buffer mechanism provided between the two vertical plates, and a protective shell provided on the outer side of the drive cylinder, with mounting grooves opened at both ends of the protective shell.
[0006] As a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, the buffer mechanism includes a slide bar, which is fixedly connected between two vertical plates. Two sliders are slidably connected to the top of the fixed plate, and the interior of the two sliders is slidably connected to the exterior of the slide bar.
[0007] As a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, the buffer mechanism further includes a damping spring, which is disposed between two sliders.
[0008] In a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, a through groove is provided at the top of the mounting slot, and a connecting rod is rotatably connected between the inside of the through groove and the top of the two sliders.
[0009] As a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, sliding grooves are provided on both sides of the mounting groove, and displacement blocks are slidably connected inside the two sliding grooves. One end of the displacement block is fixedly connected to the outer side of the fixing plate.
[0010] As a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, a silicone pad is provided inside the protective shell.
[0011] As a preferred embodiment of the high-rigidity lightweight robot joint drive module provided by this utility model, the protective shell is made of aerospace-grade high-strength aluminum alloy.
[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The high-rigidity lightweight robot joint drive module provided by this utility model can prevent accidental collision between the drive cylinder and external objects. In this case, the protective shell first contacts the object and then the impact force is buffered by the buffer mechanism, thereby reducing the impact force on the drive cylinder. This avoids the problems of cylinder leakage and insufficient power output that may occur due to collision, scratch or impact from foreign objects, thus increasing the practicality of the device. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This invention provides a schematic diagram of the overall structure of the device. Figure 2 This invention provides a schematic diagram of the device structure. Figure 3 This invention provides a bottom view of the device structure. Figure 4 This utility model provides a device Figure 2 A magnified structural diagram at point A.
[0015] The markings in the diagram are explained as follows: 1. Fixed base; 2. Drive cylinder body; 3. Fixed plate; 4. Telescopic rod; 5. Protective shell; 6. Mounting groove; 7. Silicone pad; 8. Through groove; 9. Damping spring; 10. Connecting rod; 11. Vertical plate; 12. Slider; 13. Sliding rod; 14. Sliding groove; 15. Displacement block. Detailed Implementation
[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0017] Example 1 Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A high-rigidity, lightweight robot joint drive module includes: a fixed base 1, a drive cylinder 2 fixedly mounted at one end of the fixed base 1, a telescopic rod 4 movably connected to one end of the drive cylinder 2, fixed plates 3 fixedly connected to both ends of the drive cylinder 2, two vertical plates 11 fixedly connected to the top of the fixed plates 3, a buffer mechanism provided between the two vertical plates 11, and a protective shell 5 provided on the outside of the drive cylinder 2. Both ends of the protective shell 5 have mounting slots 6. When the drive cylinder 2 is operating and accidentally collides with an external object, the protective shell 5 first contacts the object, and then the buffer mechanism buffers the impact force, thereby reducing the impact force on the drive cylinder 2. This avoids problems such as cylinder leakage and insufficient power output that may occur due to collisions, scratches, or impacts from foreign objects, increasing the practicality of the device.
[0018] Preferably, the buffer mechanism includes a slide rod 13, which is fixedly connected between two vertical plates 11. Two sliders 12 are slidably connected to the top of the fixed plate 3, and the interiors of the two sliders 12 are slidably connected to the exteriors of the slide rod 13. The buffer mechanism also includes a damping spring 9, which is disposed between the two sliders 12. A through groove 8 is provided at the top of the mounting groove 6, and a connecting rod 10 is rotatably connected between the interior of the through groove 8 and the tops of the two sliders 12. Slide grooves 14 are provided on both sides of the mounting groove 6, and displacement blocks 15 are slidably connected inside each of the two slide grooves 14. One end of the displacement block 15 is fixedly connected to the exterior of the fixed plate 3. A silicone pad 7 is provided inside the protective shell 5. The material is made of aerospace-grade high-strength aluminum alloy. When the drive cylinder 2 is in operation, it may accidentally collide with an external object. At this time, the protective shell 5 will first come into contact with the object. Then, the protective shell 5 will move and drive the two connecting rods 10 to rotate, while simultaneously driving the two sliders 12 to move outside the slide rod 13. Then, the two sliders 12 will compress the damping spring 9. Under the action of the damping spring 9, the impact force will be buffered, thereby reducing the impact force on the drive cylinder 2. Furthermore, the silicone pad 7 set inside the protective shell 5 can better protect the drive cylinder 2. Secondly, the protective shell 5 is made of aerospace-grade high-strength aluminum alloy, which can withstand slight external collisions without easily deforming, thereby increasing the rigidity of the device.
[0019] The high-rigidity lightweight robot joint drive module provided by this utility model is used as follows: When the drive cylinder 2 is operating, it accidentally collides with an external object. At this time, the protective shell 5 first contacts the object, and then the protective shell 5 moves to drive the two connecting rods 10 to rotate, while simultaneously driving the two sliders 12 to move outside the slider 13. Then, the two sliders 12 compress the damping spring 9, and the impact force is buffered under the action of the damping spring 9, thereby reducing the impact force on the drive cylinder 2. Then, the silicone pad 7 set inside the protective shell 5 can better protect the drive cylinder 2. Secondly, the protective shell 5 is made of aerospace-grade high-strength aluminum alloy, which can withstand slight external collisions without easily deforming, thereby increasing the rigidity of the device.
[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A high-rigidity, lightweight robot joint drive module, comprising: The fixed base (1) is characterized in that a drive cylinder (2) is fixedly installed at one end of the fixed base (1), a telescopic rod (4) is movably connected to one end of the drive cylinder (2), a fixed plate (3) is fixedly connected to both ends of the drive cylinder (2), two vertical plates (11) are fixedly connected to the top of the fixed plate (3), a buffer mechanism is provided between the two vertical plates (11), a protective shell (5) is provided on the outside of the drive cylinder (2), and a mounting groove (6) is provided at both ends of the protective shell (5).
2. The high-rigidity, lightweight robot joint drive module according to claim 1, characterized in that, The buffer mechanism includes a slide bar (13), which is fixedly connected between two vertical plates (11). Two sliders (12) are slidably connected to the top of the fixed plate (3), and the interior of the two sliders (12) is slidably connected to the exterior of the slide bar (13).
3. The high-rigidity, lightweight robot joint drive module according to claim 2, characterized in that, The buffer mechanism also includes a damping spring (9), which is disposed between the two sliders (12).
4. The high-rigidity, lightweight robot joint drive module according to claim 3, characterized in that, The top of the mounting groove (6) is provided with a through groove (8), and a connecting rod (10) is rotatably connected between the inside of the through groove (8) and the top of the two sliders (12).
5. The high-rigidity, lightweight robot joint drive module according to claim 1, characterized in that, Both sides of the mounting groove (6) are provided with sliding grooves (14), and displacement blocks (15) are slidably connected inside the two sliding grooves (14). One end of the displacement block (15) is fixedly connected to the outside of the fixing plate (3).
6. The high-rigidity, lightweight robot joint drive module according to claim 1, characterized in that, The protective shell (5) has a silicone pad (7) inside.
7. The high-rigidity, lightweight robot joint drive module according to claim 1, characterized in that, The protective shell (5) is made of aerospace-grade high-strength aluminum alloy.
