A four-legged robot body structure
Patent Information
- Application Number
- CN202522652231.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-15
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-15
AI Technical Summary
Existing quadruped robots have insufficient structural strength when operating on rough terrain, stairs, and narrow spaces, making functional expansion difficult and battery replacement slow.
The fuselage structure features a multi-partition design, including a leg drive motor, a control unit, a battery pack, and a head assembly. The battery pack automatically pops out via springs, providing expansion space and an independent charging port. A support beam secures the head assembly, and the control unit is vertically mounted for shock absorption.
It improves the strength and compactness of the chassis structure, simplifies functional expansion, speeds up battery replacement, reduces equipment interference, and extends the service life of the control unit.
Smart Images

Figure CN224929137U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a quadruped robot body structure. Background Technology
[0002] The robot's body structure is its "skeleton," directly determining its load capacity, dynamic performance, energy efficiency, and reliability. With the rapid development of the robotics industry, higher performance requirements have been placed on robots, typically requiring them to operate on rough terrain, stairs, narrow spaces, and hazardous environments. This necessitates a stronger and more compact body structure for quadruped robots (also known as robot dogs). When encountering different scenarios, such as cameras, robotic arms, and lighting, quadruped robots need to expand their functionality. Furthermore, they often require rapid battery replacement and recharging when facing battery charging challenges. Utility Model Content
[0003] The purpose of this invention is to overcome the above-mentioned shortcomings in the existing technology and provide a quadruped robot body structure with a reasonable structural design, which has higher strength and a more compact layout, can expand different functions, and allows for faster replacement of battery components.
[0004] The technical solution adopted by this utility model to solve the above problems is: a quadruped robot body structure, including a main body, a control unit, leg drive motors, a battery assembly, and a head assembly; characterized in that: multiple partitions are fixed inside the main body, dividing the internal space of the main body into four areas, the front and rear areas are the leg drive motor mounting areas, the middle area is the control unit mounting area, the control unit is mounted in the control unit mounting area, and the last area is the battery assembly mounting area, the battery assembly is mounted in the battery assembly mounting area; an expansion space is provided on the main body; the battery assembly is movably mounted on the main body, a battery top is fixed inside the main body, and a spring is provided on the battery top, the spring being connected to the battery assembly.
[0005] The main body of this utility model includes an upper body assembly and a lower body assembly, which are fixed together; the partition is fixed on the upper body assembly and the lower body assembly.
[0006] This utility model has a stepped limiting structure at the joint between the upper fuselage assembly and the lower fuselage assembly.
[0007] The upper surface of the upper fuselage assembly of this utility model is provided with the aforementioned expansion space, and a functional expansion interface is provided within the expansion space.
[0008] This utility model provides a body cover plate in the extended space.
[0009] The control unit of this utility model includes a control module and a mounting plate. The control module is mounted on the mounting plate, and the mounting plate is in a vertical position and fixed to the partition of the control unit mounting area with screws.
[0010] The battery assembly described in this invention is positioned to the main body of the device via a snap-fit structure.
[0011] The head assembly described in this invention is fixed to the main body of the machine body by a support beam, and the space between the head assembly and the main body of the machine body is used to accommodate the front mechanical legs.
[0012] The support beam described in this utility model includes an upper support beam and a lower support beam. The head assembly is fixed to the main body of the machine body through the upper support beam and the lower support beam respectively. A bottom cover is fixed to the bottom of the upper support beam, and the hollow part between the upper support beam and the bottom cover is used for sensor wiring. An opening for wire threading is provided on the upper support beam.
[0013] This utility model also includes a self-charging interface assembly, which is installed at the bottom of the main body of the device. The self-charging interface assembly includes a self-charging interface and a buffer pad, with the buffer pad covering the self-charging interface.
[0014] Compared with the prior art, this utility model has the following advantages and effects: 1. The partition divides the internal space of the main body of the machine into multiple installation areas, making the machine structure more compact and clear. The equipment in each area will not interfere with each other, which is beneficial to improving production efficiency. At the same time, the partition can also act as a reinforcing rib, increasing the strength of the main body of the machine.
[0015] 2. It is equipped with an expansion space to accommodate additional loads. When encountering different scenarios, such as cameras, robotic arms, lights, etc., the quadruped robot can expand its functions.
[0016] 3. When replacing the battery pack, the battery pack is automatically popped out by the spring on the top of the battery, which speeds up the replacement process. Attached Figure Description
[0017] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.
[0018] Figure 2 This is an exploded structural diagram of an embodiment of the present utility model.
[0019] Figure 3 and Figure 4 All of these are schematic diagrams of the main body of the fuselage in embodiments of this utility model.
[0020] Figure 5This is a schematic diagram of the assembly of the control unit and the lower fuselage assembly in an embodiment of the present invention.
[0021] Figure 6 This is a schematic diagram of the assembly of the fuselage body and battery pack in an embodiment of the present invention.
[0022] Figure 7 for Figure 6 A schematic diagram of the structure after the fuselage cover is opened.
[0023] Figure 8 This is a structural diagram of the assembly of the fuselage body and head assembly in an embodiment of the present utility model.
[0024] Figure 9 This is a structural diagram of the assembly of the main body and the self-charging interface component in an embodiment of the present invention. Detailed Implementation
[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.
[0026] This utility model embodiment includes a main body 1, a control unit 2, a leg drive motor 3, a battery assembly 4, a head assembly 5, and a self-charging interface assembly 6.
[0027] The main body 1 includes an upper body assembly 11 and a lower body assembly 12, which are fixed together by multiple bolts. Multiple partitions 17 are fixed to the upper body assembly 11 and the lower body assembly 12, dividing the internal space of the main body 1 into four areas. The front and rear areas are leg drive motor mounting areas 13, housing four leg drive motors 3; the middle area is the control unit mounting area 14, housing a control unit 2; and the last area is the battery assembly mounting area 15, housing a battery assembly 4. This division of areas makes the machine structure more compact and clear, preventing interference between devices in each area and improving production efficiency. The partitions 17 also act as reinforcing ribs, increasing the strength of the main body 1. A stepped limiting structure 16 is provided at the joint between the upper body assembly 11 and the lower body assembly 12 to improve the dust and water resistance of the main body 1. The upper surface of the upper fuselage assembly 11 is provided with an expansion space 18 for accommodating an expansion load. A functional expansion interface 19 is provided in the expansion space 18. A fuselage cover 110 is provided on the top of the expansion space 18. The expansion space 18 can be opened and closed by means of the fuselage cover 110.
[0028] The control unit 2 is located in the control unit mounting area 14. It includes a control module 21 and a mounting plate 22. The control module 21 mainly consists of a power module, a computing module, and a main control module. The control module 21 is mounted on the mounting plate 22. The mounting plate 22 is vertically fixed to the partition 17 of the control unit mounting area 14 with screws. Compared with the prior art, which is directly fixed to the main body 1, the vertical mounting method of this utility model has less impact on the control unit 2 from the vibration and deformation of the main body, thus extending its service life.
[0029] Four leg drive motors 3 are installed in the leg drive motor mounting areas 13 on the front and rear sides of the main body 1. Each leg drive motor 3 is fixed to the upper body assembly 11 and the lower body assembly 12 with bolts to provide support for the structural strength of the robot's body.
[0030] The battery assembly 4 is movably mounted on the main body 1, and is supported by the partition 17 and the side walls of the main body 1. The battery assembly 4 is secured to the main body 1 by a snap-fit structure. Battery tops 41 are fixed to the upper body assembly 11 and the lower body assembly 12 of the main body 1. Springs 42 are installed on the battery tops 41 and are connected to the battery assembly 4. When replacing the battery assembly 4, simply loosen the snap-fit structure, and the battery assembly 4 will automatically pop out by the springs 42 on the battery tops 41, thus speeding up the replacement process.
[0031] The head assembly 5 houses electronic components such as sensors and speakers. The head assembly 5 is fixed to the main body 1 via support beams, with both ends of the support beams secured to the head assembly 5 and the main body 1 respectively using screws. The space between the head assembly 5 and the main body 1 is used to accommodate the front mechanical legs. The support beams include an upper support beam 51 and a lower support beam 52. The head assembly 5 is fixed to the upper body assembly 11 and the lower body assembly 12 via the upper support beam 51 and the lower support beam 52 respectively, resulting in greater head stability and less deformation. A bottom cover 53 is fixed to the bottom of the upper support beam 51, and the hollow portion between the upper support beam 51 and the bottom cover 53 can be used for sensor wiring; the upper support beam 51 has openings 54 for threading wires.
[0032] The self-charging interface component 6 is installed at the bottom of the lower body component 12. It includes a self-charging interface 61 and a buffer pad 62. The buffer pad 62 wraps around the self-charging interface 61. When the machine needs to be returned to its charging position, it connects to the charging pile through the self-charging interface 61 for charging, while the buffer pad 62 contacts the charging pile to provide a buffering effect.
[0033] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components. The above description is merely illustrative of the structure of this utility model. All equivalent or simple variations made based on the structure, features, and principles described in this utility model patent concept are included within the protection scope of this utility model patent.
Claims
1. A quadruped robot body structure, comprising a main body, a control unit, leg drive motors, a battery assembly, and a head assembly; characterized in that: The main body of the device has multiple partitions fixed inside, dividing the internal space of the main body into four areas. The front and rear areas are for mounting the leg drive motors, the middle area is for mounting the control unit, and the last area is for mounting the battery assembly. The main body of the device has an expansion space. The battery assembly is movably mounted on the main body of the device, and a battery top is fixed inside the main body of the device. A spring is installed on the battery top and connected to the battery assembly.
2. The quadruped robot body structure according to claim 1, characterized in that: The main body of the fuselage includes an upper fuselage assembly and a lower fuselage assembly, which are fixed together; the partition is fixed on the upper fuselage assembly and the lower fuselage assembly.
3. The quadruped robot body structure according to claim 2, characterized in that: A stepped limiting structure is provided at the docking part of the upper fuselage assembly and the lower fuselage assembly.
4. The quadruped robot body structure according to claim 2, characterized in that: The upper surface of the upper fuselage component is provided with the expansion space, and a functional expansion interface is provided within the expansion space.
5. The quadruped robot body structure according to claim 4, characterized in that: A fuselage cover is installed in the aforementioned extended space.
6. The quadruped robot body structure according to claim 1, characterized in that: The control unit includes a control module and a mounting plate. The control module is mounted on the mounting plate, and the mounting plate is vertically fixed to the partition of the control unit mounting area with screws.
7. The quadruped robot body structure according to claim 1, characterized in that: The battery assembly is positioned against the main body of the device via a snap-fit structure.
8. The quadruped robot body structure according to claim 1, characterized in that: The head assembly is fixed to the main body of the fuselage by a support beam, and the space between the head assembly and the main body of the fuselage is used to accommodate the front mechanical legs.
9. The quadruped robot body structure according to claim 8, characterized in that: The support beam includes an upper support beam and a lower support beam. The head assembly is fixed to the main body of the machine body through the upper support beam and the lower support beam respectively. A bottom cover is fixed to the bottom of the upper support beam, and the hollow part between the upper support beam and the bottom cover is used for sensor wiring. An opening for wire threading is provided on the upper support beam.
10. The quadruped robot body structure according to claim 1, characterized in that: It also includes a self-charging interface component, which is installed at the bottom of the main body of the device. It includes a self-charging interface and a cushioning pad, with the cushioning pad surrounding the self-charging interface.
