Mechanical arm joint structure with precisely installed motor

Abstract

The utility model relates to the technical field of mechanical arm joints, and discloses a mechanical arm joint structure with a precisely installed motor, which comprises a driving unit provided with a driving connecting part and an assembling connecting part in running fit with the driving connecting part, and the driving connecting part of one driving unit is fixedly connected with the assembling connecting part of the other driving unit. A first wiring hole is formed in the driving connecting part, a second wiring hole is formed in the assembling connecting part, a hollow wire pipe is arranged at the first wiring hole and comprises a pipe body, a first positioning clamping ring and a second positioning clamping ring, and the first positioning clamping ring and the second positioning clamping ring are arranged at the ends of the pipe body respectively to achieve clearance fit between the pipe body and the first wiring hole; the connection of the first wiring hole and the second wiring hole is realized through the hollow wire pipe, so that a connecting wire for connecting the driving unit is conveniently limited and stored, the connecting wire is prevented from being wound in the working process of the driving unit, and meanwhile, a heat dissipation channel in the driving unit is effectively prevented from being blocked.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arm joints, and in particular to a motor precision-mounted mechanical arm joint structure. Background Art

[0002] A robotic arm is a machine that imitates the movements of a human arm. It is equipped with multiple mechanical joints, and each mechanical joint is driven by a motor, thereby achieving multi-angle adjustment of the robotic arm. At the same time, due to its unique operational flexibility, the robotic arm has been widely used in industrial assembly, safety and explosion-proof and other fields. As the difficulty of the movement completed by the robotic arm increases, the number of mechanical joints required increases. The mechanical joint installation of the existing robotic arm is mostly a docking installation between drive motors. After the drive motor is installed, the drive motors are electrically connected through internal wiring. An installation space is provided in the drive motor, and the connecting wire is provided in the installation space and extends from the installation space of one drive motor to the installation space of another drive motor. During the operation of the drive motor, the connecting wire will rotate with the drive motor. During this process, problems such as connecting wire entanglement may occur, causing the connecting wire to break, and then causing the drive motor to fail. In addition, the stacking of connecting wires in the installation space is also prone to blockage of heat dissipation in the drive motor, thereby causing the drive motor to overheat and burn, so improvement is needed. Utility Model Content

[0003] The main purpose of the utility model is to provide a motor precision-mounted mechanical arm joint structure, aiming to provide a mechanical arm joint structure that effectively avoids entanglement of connecting wires.

[0004] To achieve the above-mentioned purpose, the utility model proposes a motor precision-installed mechanical arm joint structure, including a driving unit, the driving unit is provided with a driving connection part and an assembly connection part rotatably matched with the driving connection part, the driving connection part of one driving unit is fixedly connected to the assembly connection part of another driving unit, a first wiring hole is provided at the driving connection part, and a second wiring hole is provided at the assembly connection part, the first wiring hole and the second wiring hole are arranged in communication, a hollow wire tube is provided at the first wiring hole, one end of the hollow wire tube is located in the driving unit, and the other end of the hollow wire tube is located outside the driving unit, and the end of the hollow wire tube located outside the driving unit is connected to the other driving unit through the second wiring hole, the hollow wire tube includes a tube body, a first positioning clamp and a second positioning clamp, the first positioning clamp and the second positioning clamp are respectively arranged at the ends of the tube body to achieve a clearance fit between the tube body and the first wiring hole.

[0005] Specifically, arc-shaped anti-scratch surfaces are provided on the inner sides of the first positioning clamp ring and the second positioning clamp ring.

[0006] Specifically, the second positioning clip is arranged in the driving unit, the second positioning clip is provided with a guide portion, the end of the tube body is connected to the second positioning clip via the guide portion, and a plane avoidance surface is provided on one side of the second positioning clip.

[0007] Specifically, the drive unit includes a shell and a cover body, the drive connection part and the assembly connection part are respectively arranged on one side of the shell and the drive connection part and the assembly connection part are arranged adjacent to each other, a mounting opening is provided on the side of the shell opposite to the drive connection part, and the cover body covers the mounting opening.

[0008] Specifically, an installation space is formed in the shell, a clamping plate is provided in the installation space, a connecting clamping hole is provided at the clamping plate, and one end of the hollow wire tube located in the driving unit is fixed through the connecting clamping hole.

[0009] Specifically, a connecting column is provided in the shell, a connecting hole is provided at the connecting column, a fixing hole corresponding to the connecting hole is provided at the clamping plate, and the clamping plate is fixed in the installation space by passing through the fixing hole and the connecting hole in sequence through an external fixing screw.

[0010] Specifically, a connection card platform is provided in the shell, an auxiliary wire take-up frame is provided at the connection card platform, the auxiliary wire take-up frame is in a Z shape, and at least one auxiliary wire take-up hole is provided at the auxiliary wire take-up frame.

[0011] Specifically, a heat sink protruding inward is provided on the inner side of the shell, and heat sink fins are provided on the outer side of the shell, and the heat sink fins are located directly above the heat sink.

[0012] Specifically, a rotating gear is provided on one side of the hollow wire tube located in the driving unit. The driving unit includes a driving element. The output end of the driving element is transmission-connected to the rotating gear to realize the rotation of the driving unit.

[0013] Specifically, the tube body and the first positioning clip are integrally formed, the second positioning clip is detachably connected to the tube body, and both the first positioning clip and the second positioning clip are provided with connection and assembly holes.

[0014] The technical solution of the utility model is to set a driving connection part and an assembly connection part at the driving unit to facilitate the rapid assembly and connection of the driving units. At the same time, a first wiring hole is set at the driving connection part, and a second wiring hole is set at the assembly connection part. The first wiring hole and the second wiring hole are connected to each other through a hollow wire tube, so as to facilitate the limiting and storage of the connecting wires used to connect the driving units, avoid the connecting wires from being tangled during the operation of the driving unit, and effectively avoid the blockage of the heat dissipation channel in the driving unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is one of the connection diagrams between the drive units of the utility model.

[0016] Figure 2 This is the second schematic diagram of the connection between the drive units of the utility model.

[0017] Figure 3 It is a cross-sectional view of the connection between the drive units of the utility model.

[0018] Figure 4 It is a schematic diagram of the disassembled state of the utility model.

[0019] Figure 5 A schematic diagram of the disassembled state of the shell and the shell cover of the utility model.

[0020] The reference numerals include: 10, driving unit; 11, shell; 110, first wiring hole; 111, second wiring hole; 112, connecting clamp; 12, shell cover; 13, heat dissipation fins; 14, heat dissipation platform; 15, connecting column; 16, connecting hole; 17, auxiliary wire take-up frame; 18, auxiliary wire take-up hole; 19, driving element; 20, hollow wire tube; 21, tube body; 22, first positioning clamp ring; 23, second positioning clamp ring; 24, clamping plate; 25, connecting clamp hole; 26, fixing hole; 27, rotating gear. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0024] like Figures 1 to 5 As shown, a motor precision-mounted mechanical arm joint structure includes a driving unit 10, and the driving unit 10 is provided with a driving connection part and an assembly connection part rotatably matched with the driving connection part. The driving connection part of one driving unit 10 is fixedly connected to the assembly connection part of another driving unit 10, and a first wiring hole 110 is provided at the driving connection part, and a second wiring hole 111 is provided at the assembly connection part. The first wiring hole 110 and the second wiring hole 111 are arranged in communication with each other, and a hollow wire tube 20 is provided at the first wiring hole 110, one end of the hollow wire tube 20 is located in the driving unit 10, and the other end of the hollow wire tube 20 is located outside the driving unit 10, and the end of the hollow wire tube 20 located outside the driving unit 10 is connected to the other driving unit 10 through the second wiring hole 111, and the hollow wire tube 20 includes a tube body 21, a first positioning snap ring 22 and a second positioning snap ring 23, and the first positioning snap ring 22 and the second positioning snap ring 23 are respectively arranged at the ends of the tube body 21 to realize the fixation of the tube body 21 in the first wiring hole 110. By providing a driving connection part and an assembly connection part at the driving unit 10, the driving units 10 can be quickly assembled and connected. At the same time, a first wiring hole 110 is provided at the driving connection part, and a second wiring hole 111 is provided at the assembly connection part. The first wiring hole 110 and the second wiring hole 111 are connected to each other through a hollow wire tube 20, so as to facilitate the limiting and storage of the connecting wires used to connect the driving units 10, avoid the connecting wires from being tangled during the operation of the driving unit 10, and effectively avoid the blockage of the heat dissipation channel in the driving unit 10.

[0025] The first positioning snap ring 22 and the second positioning snap ring 23 are provided with arc-shaped anti-scratch surfaces on their inner sides. In this embodiment, arc-shaped anti-scratch surfaces are provided on the inner sides of the first positioning snap ring 22 and the second positioning snap ring 23 to provide scratch protection for the connecting wire in the tube body 21, thereby preventing the connecting wire from being disconnected due to repeated friction when in contact with the first positioning snap ring 22 and the second positioning snap ring 23.

[0026] The second positioning snap ring 23 is arranged in the driving unit 10. The second positioning snap ring 23 is provided with a guide portion. The end of the tube body 21 is connected to the second positioning snap ring 23 through the guide portion. A plane avoidance surface is provided on one side of the second positioning snap ring 23. In this embodiment, the second positioning snap ring 23 is arranged in the driving unit 10 to facilitate the installation of the hollow wire tube 20. When the hollow wire tube 20 is installed, one end of the hollow wire tube 20 is inserted from the outside of the first wiring hole 110 outside the driving unit 10, and then the end is contacted with the guide portion of the second positioning snap ring 23 to achieve connection with the tube body 21, thereby achieving fixation of the hollow wire tube 20. At the same time, a plane avoidance surface is provided on one side of the second positioning snap ring 23, thereby facilitating the installation of the second positioning snap ring 23 in the driving unit 10, so as to achieve the avoidance installation of the second positioning snap ring 23 on the driving element 19.

[0027] The drive unit 10 includes a housing 11 and a cover body, the drive connection part and the assembly connection part are respectively arranged on one side of the housing 11 and the drive connection part and the assembly connection part are arranged adjacent to each other, a mounting opening is provided on the side of the housing 11 opposite to the drive connection part, and the cover body covers the mounting opening. In this embodiment, a mounting opening is provided at the housing 11, and the assembly of the drive unit 10 is realized through the mounting opening. At the same time, the mounting opening is covered by the cover body to improve the airtightness of the drive unit 10. In addition, the daily maintenance of the drive unit 10 can also be realized through the mounting opening.

[0028] An installation space is formed in the housing 11, a clamping plate 24 is provided in the installation space, a connecting clamp hole 25 is provided at the clamping plate 24, and one end of the hollow wire tube 20 located in the drive unit 10 is fixed through the connecting clamp hole 25. In this embodiment, an installation space is formed in the housing 11, a clamping plate 24 is provided in the installation space, and a connecting clamp hole 25 is provided at the clamping plate 24, and the second positioning clamp ring 23 is clamped through the connecting clamp hole 25, thereby improving the connection stability of the hollow wire tube 20.

[0029] A connecting column 15 is provided in the housing 11, and a connecting hole 16 is provided at the connecting column 15. A fixing hole 26 corresponding to the connecting hole 16 is provided at the clamping plate 24. The clamping plate 24 is fixed in the installation space by passing through the fixing hole 26 and the connecting hole 16 in sequence through an external fixing screw. In this embodiment, a plurality of connecting columns 15 are provided in the housing 11, and each connecting column 15 is relatively arranged on both sides of the first wiring hole 110. The clamping plate 24 is fixedly connected to the connecting column 15 through the fixing hole 26 and the connecting hole 16, and then horizontally arranged on the inner side of the first wiring hole 110, so as to facilitate connection with the second positioning clamp ring 23. At the same time, the position of the clamping plate 24 can be adjusted according to needs, so as to achieve connection at a specific position.

[0030] A connection card platform 112 is provided in the housing 11, and an auxiliary wire take-up frame 17 is provided at the connection card platform 112. The auxiliary wire take-up frame 17 is in a Z shape, and at least one auxiliary wire take-up hole 18 is provided at the auxiliary wire take-up frame 17. In this embodiment, a connection card platform 112 is provided in the housing 11, and an auxiliary wire take-up frame 17 is provided at the connection card platform 112. The auxiliary wire take-up frame 17 is provided to facilitate auxiliary wire take-up of the connection wire, and at least one auxiliary wire take-up hole 18 is provided at the auxiliary wire take-up frame 17, thereby meeting the need for reserved connection wires or the influence of too long connection wires on product connection.

[0031] The inner side of the housing 11 is provided with a heat dissipation platform 14 protruding inward, and the outer side of the housing 11 is provided with heat dissipation fins 13, which are located directly above the heat dissipation platform 14. In this embodiment, the heat dissipation platform 14 is provided on the inner side of the housing 11, and the heat dissipation platform 14 is used to better contact the hot air in the drive unit 10. At the same time, the heat dissipation fins 13 are provided above the heat dissipation platform 14, thereby improving the heat dissipation effect of the drive unit 10.

[0032] A rotating gear 27 is provided on one side of the hollow wire tube 20 located in the driving unit 10. The driving unit 10 includes a driving element 19. The output end of the driving element 19 is connected to the rotating gear 27 in a transmission manner to realize the rotation of the driving unit 10. The rotating gear 27 is provided at the hollow wire tube 20 so as to cooperate with the output end of the driving element 19, thereby realizing the rotation of the driving unit 10.

[0033] The tube body 21 and the first positioning snap ring 22 are integrally formed, and the second positioning snap ring 23 is detachably connected to the tube body 21. Both the first positioning snap ring 22 and the second positioning snap ring 23 are provided with connection assembly holes. In this embodiment, the first positioning snap ring 22 and the tube body 21 are integrally formed, thereby improving the connection stability between the first positioning snap ring 22 and the tube body 21, thereby facilitating connection with the assembly connection portion of another drive unit 10 through the first positioning snap ring 22, and after the connection is completed, the first positioning snap ring 22 is connected to the drive unit 10 through the connection assembly hole, and the second positioning snap ring 23 is also connected to the clamping plate 24 through the connection assembly hole, and is fixed at the connection clamping hole 25, thereby achieving fixed connection of the second positioning snap ring 23.

[0034] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A motor precision-mounted mechanical arm joint structure, comprising a drive unit (10), characterized in that: The drive unit (10) is provided with a drive connection part and an assembly connection part rotatably matched with the drive connection part. The drive connection part of one drive unit (10) is fixedly connected to the assembly connection part of another drive unit (10). A first wiring hole (110) is provided at the drive connection part, and a second wiring hole (111) is provided at the assembly connection part. The first wiring hole (110) and the second wiring hole (111) are arranged in communication with each other. A hollow wire tube (20) is provided at the first wiring hole (110). One end of the hollow wire tube (20) is located at the drive unit ( 10), the other end of the hollow wire tube (20) is located outside the driving unit (10), the end of the hollow wire tube (20) located outside the driving unit (10) is connected to another driving unit (10) through a second wiring hole (111), the hollow wire tube (20) comprises a tube body (21), a first positioning snap ring (22) and a second positioning snap ring (23), the first positioning snap ring (22) and the second positioning snap ring (23) are respectively arranged at the ends of the tube body (21) to achieve clearance fit between the tube body (21) and the first wiring hole (110).

2. The motor precision-mounted mechanical arm joint structure according to claim 1, characterized in that: Arc-shaped anti-scratch surfaces are provided on the inner sides of the first positioning clamp ring (22) and the second positioning clamp ring (23).

3. The motor precision-mounted mechanical arm joint structure according to claim 1, characterized in that: The second positioning snap ring (23) is arranged in the driving unit (10), the second positioning snap ring (23) is provided with a guide portion, the end of the tube body (21) is connected to the second positioning snap ring (23) via the guide portion, and a plane avoidance surface is provided on one side of the second positioning snap ring (23).

4. The motor precision-mounted mechanical arm joint structure according to claim 1, characterized in that: The drive unit (10) comprises a shell (11) and a cover body, the drive connection part and the assembly connection part are respectively arranged on one side of the shell (11) and the drive connection part and the assembly connection part are arranged adjacent to each other, one side of the shell (11) is provided with a mounting opening, and the cover body covers the mounting opening.

5. The motor precision-mounted mechanical arm joint structure according to claim 4, characterized in that: An installation space is formed in the housing (11), a clamping plate (24) is provided in the installation space, a connecting clamping hole (25) is provided at the clamping plate (24), and one end of the hollow wire tube (20) located in the drive unit (10) is fixed via the connecting clamping hole (25).

6. The motor precision-mounted mechanical arm joint structure according to claim 5, characterized in that: A connecting column (15) is provided in the housing (11), a connecting hole (16) is provided at the connecting column (15), a fixing hole (26) corresponding to the connecting hole (16) is provided at the clamping plate (24), and the clamping plate (24) is fixed in the installation space by passing through the fixing hole (26) and the connecting hole (16) in sequence via an external fixing screw.

7. The motor precision-mounted mechanical arm joint structure according to claim 4, characterized in that: A connecting card platform (112) is provided in the housing (11), an auxiliary wire take-up frame (17) is provided at the connecting card platform (112), the auxiliary wire take-up frame (17) is in a Z shape, and at least one auxiliary wire take-up hole (18) is provided at the auxiliary wire take-up frame (17).

8. The motor precision-mounted mechanical arm joint structure according to claim 4, characterized in that: The inner side of the shell (11) is provided with a heat dissipation platform (14) protruding inwards, and the outer side of the shell (11) is provided with heat dissipation fins (13), and the heat dissipation fins (13) are located directly above the heat dissipation platform (14).

9. The motor precision-mounted mechanical arm joint structure according to claim 1, characterized in that: A rotating gear (27) is provided on one side of the hollow wire tube (20) located inside the driving unit (10). The driving unit (10) comprises a driving element (19). The output end of the driving element (19) is transmission-connected to the rotating gear (27) to realize the rotation of the driving unit (10).

10. The motor precision-mounted mechanical arm joint structure according to claim 1, characterized in that: The tube body (21) and the first positioning clamp ring (22) are integrally formed, the second positioning clamp ring (23) is detachably connected to the tube body (21), and both the first positioning clamp ring (22) and the second positioning clamp ring (23) are provided with connection and assembly holes.

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