Precise hollow cup direct-current gear motor for robot joint

Abstract

The utility model belongs to the technical field of robot joint motors, particularly relates to a precise hollow cup direct-current gear motor for a robot joint, and solves the problems of troublesome installation and poor heat dissipation effect in the prior art. A speed reducer body is installed on one side of the connecting base, a protruding block is welded to one side of the speed reducer and located in the connecting base, a pressing block is assembled in the connecting base in a sliding mode, a connecting rod is fixedly connected to one side of the pressing block through a screw, and an ejector rod is fixedly connected to one side of the connecting rod through a screw. Through the arrangement of the limiting rods, the protruding blocks and other structures, when the speed reducer body is installed, the protruding blocks are inserted into the grooves firstly and then fixed through the limiting rods, so that the speed reducer body is positioned firstly and then fixedly connected through bolts, and installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of robot joint motors, in particular to a precision hollow cup DC reduction motor for robot joints. Background Art

[0002] At present, the precision hollow cup DC reduction motor is a type of motor designed specifically for robot joints, which mainly involves multiple aspects such as motor structure, performance characteristics and application scenarios. First of all, from the perspective of motor structure, the precision hollow cup DC reduction motor adopts a coreless rotor design. This innovative structural form breaks through the limitations of traditional DC motors. The armature winding adopts a hollow cup coil, which is shaped like a water cup, hence the name "hollow cup motor". This design makes the motor more compact in structure, and also solves the various problems caused by the iron core structure, such as heavy weight and high energy consumption.

[0003] The application publication number in the prior art is CN107800259A, and the name is a micro hollow cup brushed DC motor and a robot. The patent eliminates the phenomenon of saturation of the magnetic circuit inside the permanent magnet by reasonably designing the structure and matching relationship of the permanent magnet and the magnetic guide ring, which helps to enhance the magnetic flux density of the motor air gap, thereby improving the torque capacity and efficiency of the motor. The enhanced magnetic flux density enables the motor to generate a larger torque, thereby improving the performance of the motor. At the same time, due to the reduction of energy loss, the efficiency of the motor is also improved. The improvement of the motor efficiency means that the energy loss is reduced, thereby reducing the heat generation inside the motor, which helps to reduce the temperature rise of the motor. Under the premise of ensuring the performance of the motor, the design of the present invention reduces the use of permanent magnets, which not only reduces the cost of the motor, but also makes the motor lighter. Due to the reduction in the use of permanent magnets, the manufacturing cost of the motor is reduced, which is of great significance for large-scale production and commercial applications. However, it is generally fixed with bolts during installation, and the position of the robot joint is not fixed. Although the weight of the reducer is reduced, it is still relatively bulky and troublesome to install. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a precision hollow cup DC reduction motor for robot joints, which solves the problems of troublesome installation and poor heat dissipation effect.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a precision hollow cup DC reduction motor for robot joints, comprising a base, a connecting seat is rotatably mounted on the top of the base, a reducer body is mounted on one side of the connecting seat, a convex block is welded on one side of the reducer, and the convex block is located inside the connecting seat;

[0006] The connecting seat is internally slidably equipped with a pressure block, one side of the pressure block is fixedly connected to a connecting rod by screws, one side of the connecting rod is fixedly connected to a push rod by screws, the connecting seat is internally slidably equipped with a limit rod, one side of the limit rod is fixedly connected to a straight rod by screws, and one side of the straight rod is fixedly connected to a pull block by screws.

[0007] Preferably, the reducer body is provided with two heat dissipation holes, and the output end of the reducer body is fixedly connected to a rotating shaft via a coupling, and the rotating shaft passes through the interior of the connecting seat.

[0008] Preferably, a square groove is provided inside the connecting seat, the pressing block is slidably connected inside the square groove, and a first spring is commonly connected between the square groove and the connecting seat.

[0009] Preferably, a limiting groove is provided inside the connecting seat, the limiting rod is slidably connected inside the limiting groove, and a second spring is commonly connected between one end of the limiting rod and the limiting groove.

[0010] Preferably, a slot is provided on one side of the limiting rod, and one end of the push rod has the same shape and size as the slot.

[0011] Preferably, a groove is provided inside the connecting seat, the protrusion is located inside the groove, a positioning groove is provided on one side of the protrusion, and one end of the limiting rod is located inside one of the positioning grooves.

[0012] Compared with the related art, the utility model has the following beneficial effects:

[0013] 1. The utility model provides structures such as limit rods and convex blocks. When the reducer body is installed, the convex block is first inserted into the groove and then fixed by the limit rod, so that the reducer body is first positioned and then fixed by bolts, making the installation more convenient.

[0014] 2. The utility model has heat dissipation holes on the outer shell of the reducer body through the arrangement of the reducer body and heat dissipation holes. The reducer body can discharge heat when it is working, and the heat dissipation holes are positioned downward so that the heat is dissipated to the ground, thereby improving safety.

[0015] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a structural schematic diagram of the connecting seat of the utility model;

[0019] Figure 3 It is a top sectional view of the reducer body of the utility model;

[0020] Figure 4 It is an enlarged view of point A of the present utility model.

[0021] Numbers in the figure:

[0022] 1. Base; 2. Connecting seat; 3. Reducer body; 4. Pull block; 5. Heat dissipation hole; 6. Rotating shaft; 7. Limit rod; 8. First spring; 9. Straight rod; 10. Bump; 11. Press block; 12. Second spring; 13. Connecting rod; 14. Push rod; 15. Positioning groove; 16. Card slot; 17. Groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model 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 in 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.

[0024] See also Figure 1-4A precision hollow cup DC reduction motor for robot joints includes a base 1, a connecting seat 2 is rotatably installed on the top of the base 1, a reducer body 3 is installed on one side of the connecting seat 2, a convex block 10 is welded on one side of the reducer, the convex block 10 is located inside the connecting seat 2, a pressure block 11 is slidably assembled inside the connecting seat 2, one side of the pressure block 11 is fixedly connected to a connecting rod 13 by screws, one side of the connecting rod 13 is fixedly connected to a push rod 14 by screws, a limiting rod 7 is slidably assembled inside the connecting seat 2, one side of the limiting rod 7 is fixedly connected to a straight rod 9 by screws, and one side of the straight rod 9 is fixedly connected to a pull block 4 by screws. Through the arrangement of structures such as the limiting rod 7 and the convex block 10, when the reducer body 3 is installed, the convex block 10 is first inserted into the inside of the groove 17, and then fixed by the limiting rod 7, so that the reducer body 3 is first positioned and then fixedly connected by bolts, making the installation more convenient.

[0025] See also Figure 2 The reducer body 3 is provided with two heat dissipation holes 5. The output end of the reducer body 3 is fixedly connected with a rotating shaft 6 through a coupling. The rotating shaft 6 passes through the interior of the connecting seat 2. Through the arrangement of the reducer body 3 and the heat dissipation holes 5 and other structures, heat dissipation holes 5 are opened on the outer shell of the reducer body 3. When the reducer body 3 is working, the heat can be discharged, and the heat dissipation holes 5 are positioned downward, so that the heat is dissipated to the ground, which improves safety.

[0026] See also Figure 1-4 A square groove is provided inside the connecting seat 2, and the pressure block 11 is slidably connected inside the square groove. A first spring 8 is commonly connected between the square groove and the connecting seat 2. A limiting groove is provided inside the connecting seat 2, and the limiting rod 7 is slidably connected inside the limiting groove. A second spring 12 is commonly connected between one end of the limiting rod 7 and the limiting groove. A card slot 16 is provided on one side of the limiting rod 7, and one end of the push rod 14 has the same shape and size as the card slot 16. A groove 17 is provided inside the connecting seat 2, and the protrusion 10 is located inside the groove 17. A positioning groove 15 is provided on one side of the protrusion 10, and one end of the limiting rod 7 is located inside one of the positioning grooves 15.

[0027] The specific implementation process of the utility model is as follows: when the reducer body 3 is installed at the joint of the robot, since the reducer body 3 is heavy, it is more troublesome to install. Therefore, the protrusion 10 on one side of the reducer body 3 can be inserted into the inside of the connecting seat 2, and the protrusion 10 pushes the pressure block 11 to move to one side, so that the connecting rod 13 drives the top rod 14 to move, and the limit rod 7 will lose the limiting effect. Due to the action of the first spring 8, the limit rod 7 is ejected, so that the limit rod 7 slides into the inside of the protrusion 10 and fixes it, thereby positioning the reducer body 3, and then fixing it with bolts, so that the installation is more convenient and quick. The internal structure of the hollow cup DC reduction motor is a prior art, so it will not be repeated;

[0028] The reducer body 3 generates a lot of heat during use, so a heat dissipation hole 5 is provided at the bottom of the reducer body 3. When the reducer body 3 is in use, the internal heat is dissipated to the ground, so that the heat will not burn the staff, thereby improving safety.

[0029] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A precision hollow cup DC reduction motor for robot joints, comprising a base (1), characterized in that: A connecting seat (2) is rotatably mounted on the top of the base (1), a reducer body (3) is mounted on one side of the connecting seat (2), a convex block (10) is welded on one side of the reducer, and the convex block (10) is located inside the connecting seat (2); The connection seat (2) is internally slidably equipped with a pressure block (11), one side of the pressure block (11) is fixedly connected to a connecting rod (13) by means of screws, one side of the connecting rod (13) is fixedly connected to a push rod (14) by means of screws, the connection seat (2) is internally slidably equipped with a limit rod (7), one side of the limit rod (7) is fixedly connected to a straight rod (9) by means of screws, and one side of the straight rod (9) is fixedly connected to a pull block (4) by means of screws.

2. The precision hollow cup DC reduction motor for robot joints according to claim 1, characterized in that: The reducer body (3) is provided with two heat dissipation holes (5), and the output end of the reducer body (3) is fixedly connected to a rotating shaft (6) via a coupling, and the rotating shaft (6) passes through the interior of the connecting seat (2).

3. The precision hollow cup DC reduction motor for robot joints according to claim 1 is characterized in that: A square groove is provided inside the connecting seat (2), the pressing block (11) is slidably connected inside the square groove, and a first spring (8) is commonly connected between the square groove and the connecting seat (2).

4. The precision hollow cup DC reduction motor for robot joints according to claim 1, characterized in that: A limiting groove is provided inside the connection seat (2), the limiting rod (7) is slidably connected inside the limiting groove, and a second spring (12) is commonly connected between one end of the limiting rod (7) and the limiting groove.

5. The precision hollow cup DC reduction motor for robot joints according to claim 1, characterized in that: A slot (16) is provided on one side of the limiting rod (7), and one end of the push rod (14) has the same shape and size as the slot (16).

6. The precision hollow cup DC reduction motor for robot joints according to claim 1, characterized in that: The connection seat (2) has a groove (17) formed inside, the protrusion (10) is located inside the groove (17), a positioning groove (15) is formed on one side of the protrusion (10), and one end of the limiting rod (7) is located inside one of the positioning grooves (15).

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