Motor shell with heat dissipation structure for robot

Abstract

The utility model provides a robot motor housing with a heat dissipation structure, and relates to the technical field of robot motor housings, the robot motor housing comprises a front housing, the outer walls of the two sides of the front housing are both provided with heat dissipation grooves, the outer walls of the two sides of the front housing are both provided with two connecting grooves, the outer wall of the upper end of the front housing is fixedly connected with heat dissipation fins, and the heat dissipation fins are fixedly connected with the heat dissipation grooves. A plurality of circulation grooves are formed in the heat dissipation fins, an internal element is movably connected to one side of the inner wall of the front shell, the outer walls of the two sides of the internal element are each connected with a heat conduction piece, a rear cover is movably connected to the sides, away from the front shell, of the heat conduction pieces, and four plug pins are movably connected to the outer wall of one side of the rear cover; the side, close to the front shell, of the internal element is connected with a driving rod. According to the utility model, the problems of equipment failure and short service life caused by poor heat dissipation due to insufficient heat dissipation channel design, material heat conductivity and heat conduction efficiency of the existing robot motor shell are solved.

Description

Technical Field

[0001] This utility model relates to the field of robot motor housing technology, and in particular to a robot motor housing with a heat dissipation structure. Background Technology

[0002] With the global industrial robot inventory exceeding 5.5 million units (IFR 2023 Annual Report), the motor, as a core component of the robot, directly determines the equipment's lifespan through its housing heat dissipation performance. Under high-dynamic conditions (such as when the ABB IRB 6700 is performing arc welding), the servo motor winding temperature can reach 180℃ (measured according to EN 60034-1 standard). Traditional die-cast aluminum housings have a thermal conductivity of <120W / m·K, resulting in a temperature difference of up to 65℃ between the motor's internal core temperature and the housing surface (Fanuc M-2000iA thermal imaging data). This directly leads to an average annual increase of 4.7% in the permanent magnet demagnetization rate (Siemens Technology White Paper). Notably, among the repair cases of KUKA KRQUANTEC series robots due to insufficient heat dissipation, 42% involved permanent magnet synchronous motor demagnetization faults (2019-2023 maintenance data analysis), with an average repair cost exceeding €12,000 per unit (including associated damage to the reducer).

[0003] Existing technologies face three major bottlenecks: First, the traditional radial heat dissipation fins (height ≤15mm) have a convective heat dissipation coefficient of only 8-10W / (m²) in static air. 2 The ASHRAE standard test results (K) cannot meet the transient thermal load caused by the high-frequency start-stop of collaborative robots (the Yaskawa HC10DT motor has a start-stop frequency of up to 80 times / minute); secondly, the cast shell uses ADC12 aluminum alloy, which has a coefficient of thermal expansion of 23×10⁻⁶. -6 / K) and internal magnets (11×10 -6 The interface thermal resistance increased by 47% after 2500 working cycles due to the mismatch between the / K and the heat sink (tested according to IEC 60068-2-14 standard). Thirdly, the copper-aluminum composite heat sink (0.2mm thick) currently used by major international manufacturers (such as the FANUC R-2000iC model) has seen its thermal conductivity decrease from the nominal 280W / m·K to 120W / m·K due to oxygen permeation at the interface (SEM observation results from a 6000-hour aging test), which has reached the failure threshold of the JIS H 4080 standard. Furthermore, according to Mitsubishi Electric's internal experiments, when the casing temperature gradient is >30℃ / cm, the measurement error of the internal Hall element reaches ±4.2% (exceeding the allowable tolerance of ISO 13849-1PLd level by 3 times). Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a motor housing for robots with a heat dissipation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a robot motor housing with a heat dissipation structure, comprising: a front housing, wherein heat dissipation grooves are provided on both outer walls of the front housing, and two connecting grooves are provided on both outer walls of the front housing; heat dissipation fins are fixedly connected to the upper outer wall of the front housing, and multiple flow grooves are provided on the heat dissipation fins; an internal component is movably connected to one side of the inner wall of the front housing; a heat-conducting component is connected to both outer walls of the internal component; a rear cover is movably connected to the side of the heat-conducting component away from the front housing; four pins are movably connected to one outer wall of the rear cover; and a drive rod is connected to the side of the internal component near the front housing.

[0006] In a preferred embodiment, two connecting mechanisms are fixedly connected to one side of the outer wall of the heat-conducting component. Each connecting mechanism includes a fixing block, a spring piece fixedly connected to one side of the inner wall of the fixing block, a threaded groove formed on one side of the inner wall of the fixing block, and a movable block movably connected to one side of the outer wall of the fixing block. The movable block has a connecting thread on one side of its outer wall and a groove formed on one side of its inner wall.

[0007] In a preferred embodiment, the threaded groove on one side of the inner wall of the fixed block is threadedly connected to the groove on the outer wall of one side of the movable block.

[0008] In a preferred embodiment, the connecting thread on one side of the movable block is connected to the spring piece on one side of the fixed block.

[0009] In a preferred embodiment, the internal components, heat-conducting elements, and drive rods are all located on one side of the inner wall of the front housing.

[0010] In a preferred embodiment, the two heat-conducting components are connected to the heat dissipation grooves formed on the outer walls of both sides of the front housing.

[0011] In a preferred embodiment, the connecting grooves on both sides of the outer wall of the front housing are connected to the movable block.

[0012] In a preferred embodiment, the heat dissipation fins on the upper outer wall of the front housing are connected to the internal components on the inner wall of the front housing.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In use, the design of the heat dissipation grooves and fins in this invention provides an excellent heat dissipation channel for the front housing. The heat dissipation fins, through the opening of flow grooves, utilize natural airflow to remove heat, further improving the heat dissipation effect. The heat-conducting components use high thermal conductivity composite materials (such as graphene or copper-ceramic composite materials) to replace traditional metal materials. The high thermal conductivity of these materials allows the heat generated by the motor to be quickly dissipated from the inside, avoiding equipment failure due to overheating. The heat-conducting components, by connecting with the heat dissipation grooves of the front housing, ensure that heat is rapidly conducted from internal components to the external heat dissipation structure, thereby improving the overall heat dissipation efficiency and extending the equipment life.

[0015] 2. In use, the connecting mechanism of this invention, through the design of components such as fixed blocks, springs, and movable blocks, effectively secures the rear cover to the heat-conducting parts, ensuring the safety of internal components and the drive rod. During equipment operation, these structures, aided by elastic materials, enhance the fixing effect, preventing loosening or damage. The design of the connecting mechanism allows for easy disassembly of the front housing and rear cover by simply reversing the operation when maintenance or replacement of internal components is required. This design greatly facilitates equipment maintenance and replacement, saves time and manpower, and reduces downtime caused by equipment aging. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the external structure of a robot motor housing with a heat dissipation structure provided by this utility model.

[0017] Figure 2 This is a schematic diagram of the external structure of a robot motor housing with a heat dissipation structure provided by this utility model.

[0018] Figure 3 This utility model provides a disassembly diagram of a robot motor housing with a heat dissipation structure.

[0019] Figure 4 This utility model provides a schematic diagram of the disassembly structure of the front shell of a robot motor housing with a heat dissipation structure.

[0020] Figure 5 This utility model provides a cross-sectional disassembly diagram of the connection mechanism for a robot motor housing with a heat dissipation structure.

[0021] Legend:

[0022] 1. Front housing; 2. Heat dissipation groove; 3. Connecting groove; 4. Heat dissipation fins; 5. Flow groove; 6. Internal components; 7. Thermal conductive parts; 8. Connecting mechanism; 9. Rear cover; 10. Pin; 11. Drive rod;

[0023] 81. Fixed block; 82. Spring piece; 83. Threaded groove; 84. Movable block; 85. Connecting thread; 86. Groove. Detailed Implementation

[0024] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0025] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0026] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; 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. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected through a transitional structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0028] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0029] Example 1

[0030] like Figure 1-4 As shown, this utility model provides a technical solution: a robot motor housing with a heat dissipation structure, comprising: a front housing 1, heat dissipation grooves 2 on both outer walls of the front housing 1, two connecting grooves 3 on both outer walls of the front housing 1, heat dissipation fins 4 fixedly connected to the upper outer wall of the front housing 1, multiple flow grooves 5 on the heat dissipation fins 4, an internal component 6 movably connected to one side of the inner wall of the front housing 1, the heat dissipation fins 4 on the upper outer wall of the front housing 1 correspondingly connected to the internal component 6 on the inner wall of the front housing 1, a heat-conducting element 7 connected to both outer walls of the internal component 6, the two heat-conducting elements 7 correspondingly connected to the heat dissipation grooves 2 on both outer walls of the front housing 1, a rear cover 9 movably connected to the side of the heat-conducting element 7 away from the front housing 1, four pins 10 movably connected to one outer wall of the rear cover 9, and a drive rod 11 connected to the side of the internal component 6 near the front housing 1, the internal component 6, the heat-conducting element 7, and the drive rod 11 are all located on one side of the inner wall of the front housing 1.

[0031] In this embodiment, a front housing 1 is designed, with multiple heat dissipation grooves 2 on both sides of the outer wall of the front housing 1, and multiple heat dissipation fins 4 are fixedly connected to the upper outer wall of the front housing 1. Each heat dissipation fin 4 has a flow groove 5. The inner wall of the heat dissipation fin 4 is hollow, and its bottom end is connected to the front housing 1. An internal component 6 and a drive rod 11 are connected to one side of the inner wall of the front housing 1. The internal component 6 can control the drive rod 11 to drive it. A heat-conducting component 7 is provided on both sides of the internal component 6. The heat-conducting component 7 adopts a new type of high thermal conductivity composite material to replace traditional metal materials (such as aluminum or steel). For example, graphene and copper-ceramic composite materials are used. These materials have extremely high thermal conductivity and can quickly dissipate the heat generated by the motor from inside the motor, improving heat dissipation efficiency. One side of the heat-conducting component 7 is connected to the heat dissipation groove 2 opened on the outer wall of the front housing 1. Therefore, the heat generated by the internal component 6 during operation is absorbed by the heat-conducting component 7 and discharged to the outer wall of the front housing 1 through the heat dissipation groove 2, thus completing the heat dissipation operation. Since the heat dissipation fins 4 are connected to the front housing 1, the heat generated generally has an upward trend. Therefore, it can be carried away by natural air circulation through the flow grooves 5 opened on the heat dissipation fins 4, further ensuring the heat dissipation performance of the front housing 1. On the other side of the internal component 6, there is a rear cover 9. A pin 10 is connected to the rear cover 9. The pin 10 can be connected to one side of the heat-conducting component 7. The heat-conducting component 7 is fixedly connected to one side of the inner wall of the front housing 1. Therefore, the rear cover 9 can be fixedly connected to the front housing 1 through the pin 10.

[0032] Example 2

[0033] like Figure 5As shown, two connecting mechanisms 8 are fixedly connected to one side of the outer wall of the heat-conducting component 7. The connecting mechanism 8 includes a fixing block 81, a spring piece 82 fixedly connected to one side of the inner wall of the fixing block 81, a threaded groove 83 opened on one side of the inner wall of the fixing block 81, and a movable block 84 movably connected to one side of the outer wall of the fixing block 81. The connecting grooves 3 opened on both sides of the outer wall of the front housing 1 are correspondingly connected to the movable block 84. A connecting thread 85 is provided on one side of the outer wall of the movable block 84. The connecting thread 85 opened on one side of the inner wall of the movable block 84 is correspondingly connected to the spring piece 82 provided on one side of the inner wall of the fixing block 81. A groove 86 is opened on one side of the inner wall of the movable block 84. The threaded groove 83 opened on one side of the inner wall of the fixing block 81 is threadedly connected to the groove 86 provided on one side of the outer wall of the movable block 84.

[0034] In this embodiment, two connecting mechanisms 8 are provided on one side of the heat-conducting component 7. Each connecting mechanism 8 includes a fixing block 81, which is fixedly connected to the outer wall of one side of the heat-conducting component 7. Four spring pieces 82, made of elastic material, are fixedly connected to the inner wall of the fixing block 81 in a circular array. A threaded groove 83 is formed on the inner wall of the fixing block 81, and a connecting thread 85 is formed on the outer wall of the fixing block 81. The fixing block 81 can be threadedly connected to the threaded groove 83 on the inner wall of the fixing block 81 via the connecting thread 85, thereby allowing the movable block 84 to be movably connected to the fixing block 81. A groove 86 is formed on the inner wall of the movable block 84, and the groove 86 is correspondingly connected to one end of each of the four spring pieces 82. The movable block 84 is connected to the connecting groove 3 on the side wall of the front housing 1. A part of it extends to one side of the outer wall of the front housing 1. Therefore, when the pin 10 is connected to the connecting mechanism 8, the movable block 84 can be rotated. The movable block 84 moves to one side on the inner wall of the fixed block 81. At this time, the groove 86 will act on the spring piece 82, causing the spring piece 82 to move closer to the center. At this time, the spring piece 82 will act on one side of the outer wall of the pin 10, thereby ensuring that the pin 10 fixes the rear cover 9 and the heat-conducting component 7, thus ensuring the protection of the internal components 6 and the drive rod 11. When the internal components 6 and the drive rod 11 need to be replaced due to aging after long-term use, the reverse operation can be performed to separate the front housing 1 from the rear cover 9, thereby completing the replacement of the internal components 6 and the drive rod 11.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; under the concept of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A motor housing for a robot with a heat dissipation structure, comprising a front housing (1), characterized in that: The front housing (1) has heat dissipation grooves (2) on both sides of its outer wall, and two connecting grooves (3) on both sides of its outer wall. The upper outer wall of the front housing (1) is fixedly connected to a heat dissipation fin (4), and multiple flow grooves (5) are provided on the heat dissipation fin (4). An internal component (6) is movably connected to one side of the inner wall of the front housing (1). A heat-conducting component (7) is connected to both sides of the outer wall of the internal component (6). A rear cover (9) is movably connected to the side of the heat-conducting component (7) away from the front housing (1). Four pins (10) are movably connected to one side of the outer wall of the rear cover (9). A drive rod (11) is connected to the side of the internal component (6) close to the front housing (1).

2. The motor housing for a robot having a heat dissipation structure according to claim 1, characterized in that: Two connecting mechanisms (8) are fixedly connected to one side of the outer wall of the heat-conducting component (7). The connecting mechanism (8) includes a fixing block (81), a spring piece (82) is fixedly connected to one side of the inner wall of the fixing block (81), a threaded groove (83) is opened on one side of the inner wall of the fixing block (81), a movable block (84) is movably connected to one side of the outer wall of the fixing block (81), a connecting thread (85) is provided on one side of the outer wall of the movable block (84), and a groove (86) is opened on one side of the inner wall of the movable block (84).

3. The motor housing for a robot having a heat dissipation structure according to claim 2, characterized in that: The threaded groove (83) on one side of the inner wall of the fixed block (81) is threadedly connected to the groove (86) on the outer wall of one side of the movable block (84).

4. The motor housing for robots with heat dissipation structure according to claim 2, characterized in that: The connecting thread (85) on one side of the inner wall of the movable block (84) is connected to the spring piece (82) on one side of the inner wall of the fixed block (81).

5. The motor housing for robots having a heat dissipation structure according to claim 1, characterized in that: The internal components (6), heat-conducting components (7), and drive rods (11) are all located on one side of the inner wall of the front housing (1).

6. The motor housing for robots with heat dissipation structure according to claim 1, characterized in that: The two heat-conducting components (7) are connected to the heat dissipation grooves (2) opened on both sides of the outer wall of the front housing (1).

7. The motor housing for robots with heat dissipation structure according to claim 2, characterized in that: The connecting grooves (3) on both sides of the outer wall of the front housing (1) are connected to the movable block (84).

8. The motor housing for robots with heat dissipation structure according to claim 1, characterized in that: The heat dissipation fins (4) provided on the upper outer wall of the front housing (1) are connected to the internal components (6) provided on the inner wall of the front housing (1).

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