Brushless motor for high-sensitivity manipulator

Abstract

The brushless motor comprises a brushless motor body, a plurality of annular heat dissipation fins are installed on a shell of the brushless motor body, an outer pipe is arranged outside the annular heat dissipation fins in a sleeved mode, a plurality of annular heat dissipation channels are formed among the outer pipe, the annular heat dissipation fins and the brushless motor body, and the annular heat dissipation channels are communicated with the brushless motor body. An air outlet pipe is installed at one end of the outer pipe, an air inlet pipe is installed at the other end of the outer pipe, an axial flow fan is installed on the air inlet pipe, the air inlet pipe is sleeved with a movable ring, and a plurality of limiting plates are vertically installed on the outer ring of the movable ring. According to the brushless motor, the structure is simple, the axial flow fan is adopted for cooling, compared with a cooling fan, the efficiency of the axial flow fan is higher, larger air volume can be provided under lower power consumption, air can be concentrated through the outer pipe, the air can be concentrated to be in contact with the shell of the brushless motor body, and heat can be dissipated more efficiently.

Description

TECHNICAL FIELD

[0001] The utility model relates to brushless motor technical field, concretely relates to a high sensitivity mechanical hand is with brushless motor. BACKGROUND

[0002] High sensitivity mechanical hand usually needs high precision, high response speed and high reliability brushless motor to drive. Brushless motor is widely used in mechanical hand, robot and other precision equipment because of its high efficiency, low noise, long life and precise control etc.

[0003] At present, brushless motor may produce overheating problem when under high load or long time operation, especially in high precision and high sensitivity application, overheating may lead to motor performance decline even damage, completely rely on brushless motor itself to carry out heat dissipation, and the cooling speed is slow, some brushless motor adopts single fan to carry out heat dissipation, and the heat dissipation effect is also not remarkable, and brushless motor often damages because of temperature is too high. SUMMARY

[0004] The utility model relates to a high sensitivity mechanical hand is with brushless motor, adopts axial flow fan to carry out cooling, and can change the angle of installation according to the scene to solve the problem raised in above -mentioned background art.

[0005] The utility model is through following technical scheme to realize: a high sensitivity mechanical hand is with brushless motor, including brushless motor body, install a plurality of annular heat dissipation fin leaf on the shell of brushless motor body, the outside of a plurality of annular heat dissipation fin leaf is equipped with outer tube, and the outer tube, annular heat dissipation fin leaf and brushless motor body form a plurality of annular heat dissipation passageways, install the air outlet pipe on one end of outer tube, install the air inlet pipe on the other end, install the axial flow fan on the air inlet pipe, the outside of air inlet pipe is equipped with mobile ring, install a plurality of limit plates perpendicularly on the outer ring of mobile ring, form limit passageway between limit plate, and the width of limit passageway is matched with the length of outer tube, and the inner side of limit plate is in contact with the end face and both sides annular heat dissipation fin leaf of outer tube.

[0006] As preferred technical scheme, a plurality of positioning grooves are arranged in annular structure on the annular heat dissipation fin leaf of one side, and the one end of outer tube is provided with positioning passageway opposite to the positioning groove, and the positioning strip is installed on the limit plate of one side and inserted into the corresponding positioning groove and positioning passageway.

[0007] As preferred technical scheme, the fixed ring is installed on the air inlet pipe, and a plurality of compression springs are installed between the fixed ring and the mobile ring.

[0008] As preferred technical scheme, the inner diameter of outer tube is matched with the outer diameter of annular heat dissipation fin leaf, and the rubber layer is installed on the inner wall surface of outer tube, and the rubber layer is in contact with the outer circle surface of annular heat dissipation fin leaf.

[0009] As a preferred technical scheme, the annular heat dissipation channel is arranged in communication with the air inlet pipe and the air outlet pipe.

[0010] As a preferred technical scheme, the air inlet pipe is provided with a key groove, and a key part is protruded on an inner ring surface of the moving ring and is arranged in the key groove in a sliding mode.

[0011] As a preferred technical scheme, the outer pipe opening end surface is arranged flush with the outer side surfaces of the two annular heat dissipation fin leaves.

[0012] The utility model discloses the beneficial effect is: the utility model discloses simple structure adopts axial flow fan cooling, compared with the heat dissipation fan, the efficiency of axial flow fan is higher, can provide larger air volume under lower power consumption, and the wind can be concentrated through the outer pipe, makes the wind concentrated and the shell of brushless motor body contact, makes more efficient heat dissipation can be carried out, and axial flow fan can revolve around brushless motor body to change the orientation of blowing and the position of installation, increase adaptability, and convenient dismounting. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to these drawings.

[0014] Figure 1 It is the overall structure schematic diagram of the utility model;

[0015] Figure 2 It is the side view of the utility model;

[0016] Figure 3 It is the structure schematic diagram of the utility model after removing one side limiting plate;

[0017] Figure 4 It is the installation structure schematic diagram of annular heat dissipation fin leaf of the utility model.

[0018] Wherein, 1, brushless motor body;2, annular heat dissipation fin leaf;3, outer pipe;4, positioning groove;5, positioning channel;6, air outlet pipe;7, air inlet pipe;8, axial flow fan;9, fixed ring;10, moving ring;11, limiting plate;12, compression spring;13, positioning strip. DETAILED DESCRIPTION

[0019] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are intended to explain the present application, and cannot be understood as limiting the present application.

[0020] All features disclosed in this specification, or all steps of any methods or processes disclosed in this specification, can be combined in any manner, except where features or steps are mutually exclusive.

[0021] Any feature disclosed in this specification, unless stated otherwise, can be replaced by an alternative feature or step having the same or a similar effect. That is, unless stated otherwise, each feature is one example only of a number of equivalent or similar features.

[0022] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 , the utility model discloses a high sensitivity mechanical hand is with brushless motor, including brushless motor body 1, the shell of brushless motor body 1 is installed with multiple annular heat dissipation fin 2, the outside of multiple annular heat dissipation fin 2 is equipped with outer tube 3, and multiple annular heat dissipation channel is formed between outer tube 3, annular heat dissipation fin 2 and brushless motor body 1, and one end of outer tube 3 is installed with gas outlet pipe 6, and the other end is installed with gas inlet pipe 7, and the outside of gas inlet pipe 7 is equipped with moving ring 10, and multiple limit plates 11 are vertically installed on the outer ring of moving ring 10, and limit channel is formed between limit plate 11, and the width of limit channel is matched with the length of outer tube 3, and the inner side of limit plate 11 is in contact with the end face and both sides annular heat dissipation fin 2 of outer tube 3.

[0023] In the embodiment, a plurality of positioning grooves 4 are arranged in a ring shape on the annular heat dissipation fin 2 on one side, and a positioning channel 5 is arranged at one end of the outer tube 3 opposite the positioning groove 4. A positioning strip 13 is arranged on the limit plate 11 on one side, and the positioning strip 13 is inserted into the corresponding positioning groove 4 and positioning channel 5.

[0024] In the embodiment, a fixing ring 9 is arranged on the gas inlet pipe 7, and a plurality of compression springs 12 are arranged between the fixing ring 9 and the moving ring 10.

[0025] In the embodiment, the inner diameter of the outer tube 3 is matched with the outer diameter of the annular heat dissipation fin 2, and a rubber layer is arranged on the inner wall surface of the outer tube 3. The rubber layer is in contact with the outer surface of the annular heat dissipation fin 2. The rubber layer increases the sealing property between the annular heat dissipation fin and the outer tube, and prevents gas from leaking out between the two.

[0026] In this embodiment, the annular heat dissipation channel is connected to the air inlet pipe 7 and the air outlet pipe 6. The air generated by the axial flow fan enters the outer pipe through the air inlet pipe and is concentrated through the annular heat dissipation channel. It then contacts the outer shell of the brushless motor body and the annular heat dissipation fins, increasing the contact area until it is discharged from the air outlet pipe, thus increasing the heat dissipation efficiency.

[0027] In this embodiment, the intake pipe 7 is provided with a keyway, and the inner ring surface of the moving ring 10 protrudes to form a key. The key is slidably disposed in the keyway, so that the moving ring can only move up and down along the keyway, thus avoiding the situation where the moving ring rotates.

[0028] In this embodiment, the open end face of the outer tube 3 is flush with the outer surface of the two annular heat dissipation fins 2, so that the inner surface of the limiting plate can abut against the two annular heat dissipation fins, thereby axially positioning the outer tube.

[0029] During installation, push the moving ring downwards. The movement of the moving ring drives the limiting plate, causing the limiting plate to move away from both ends of the outer tube. At this time, the outer tube can be directly fitted onto the outside of multiple annular heat dissipation fins, and the combination of the outer tube can form multiple annular heat dissipation channels on the outside of the brushless motor body.

[0030] After the moving ring is released, the rebound energy of the compression spring can drive the moving ring and the limiting plate, so that the limiting plate can move to the outside of the outer tube and the annular heat dissipation fins, thereby positioning the outer tube. The positioning strip on the limiting plate can pass through the positioning channel and be inserted into the corresponding positioning groove, thereby axially positioning the outer tube and the axial flow fan.

[0031] In this process, after the moving ring moves toward the axial flow fan, the positioning strip on the limit plate can be removed from the positioning groove. After losing the positioning of the positioning strip, the outer tube can rotate around the brushless motor body to change the installation angle of the axial flow fan, thus increasing adaptability. After the moving ring is released, the positioning strip can be inserted into the corresponding positioning groove, thereby positioning the rotated outer tube and the axial flow fan and avoiding affecting the operation of the robot.

[0032] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A brushless motor for a high-sensitivity robotic arm, characterized in that: The system includes a brushless motor body (1), on which a plurality of annular heat dissipation fins (2) are installed. An outer tube (3) is fitted around the annular heat dissipation fins (2). A plurality of annular heat dissipation channels are formed between the outer tube (3), the annular heat dissipation fins (2) and the brushless motor body (1). An air outlet pipe (6) is installed at one end of the outer tube (3) and an air inlet pipe (7) is installed at the other end. An axial flow fan (8) is installed on the air inlet pipe (7). A movable ring (10) is fitted around the air inlet pipe (7). A plurality of limiting plates (11) are vertically installed on the outer ring of the movable ring (10). A limiting channel is formed between the limiting plates (11). The width of the limiting channel matches the length of the outer tube (3). The inner side of the limiting plate (11) is in contact with the end face of the outer tube (3) and the annular heat dissipation fins (2) on both sides.

2. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: On one side, the annular heat dissipation fins (2) are provided with multiple positioning grooves (4) in an annular structure. One end of the outer tube (3) is provided with positioning channels (5) at the positioning grooves (4). On one side, the limiting plate (11) is equipped with positioning strips (13), and the positioning strips (13) are inserted into the corresponding positioning grooves (4) and positioning channels (5).

3. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: A fixed ring (9) is installed on the air intake pipe (7), and multiple compression springs (12) are installed between the fixed ring (9) and the moving ring (10).

4. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: The inner diameter of the outer tube (3) matches the outer diameter of the annular heat dissipation fins (2), and a rubber layer is installed on the inner wall surface of the outer tube (3), with the rubber layer abutting against the outer ring surface of the annular heat dissipation fins (2).

5. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: The annular heat dissipation channel is connected to the air inlet pipe (7) and the air outlet pipe (6).

6. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: The intake pipe (7) is provided with a keyway, and the inner ring surface of the moving ring (10) protrudes to form a key, which is slidably disposed in the keyway.

7. The high-sensitivity brushless motor for a robotic arm according to claim 1, characterized in that: The opening end face of the outer tube (3) is flush with the outer surface of the two annular heat dissipation fins (2).

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