Brushless direct-current gear motor with end cover quick-mounting function

Abstract

The utility model discloses a brushless direct-current gear motor with an end cover quick-mounting function, which comprises a brushless direct-current gear motor shell and a front end cover arranged on one side of the brushless direct-current gear motor shell, and a rear skirt edge and a front skirt edge are integrally formed on the outer walls of the opposite sides of the front end cover and the brushless direct-current gear motor shell respectively. A double-column calibration structure connected with the outer wall of a shell of the brushless direct-current gear motor is arranged on the outer wall of the side, close to the front skirt edge, of the rear skirt edge, a hollowed-out groove is formed in the outer wall of one side of the front skirt edge, and a U-shaped supporting plate is installed on the outer wall of the other side of the front skirt edge. According to the utility model, through the double-column calibration structure, errors in the assembly process can be reduced, and a worker can more quickly complete calibration and positioning work of the bolting point of the front end cover and the brushless direct current gear motor shell, so that the assembly time of a production line can be saved, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brushless motors, in particular to a brushless DC reduction motor with an end cover quick-installation function. Background Art

[0002] Brushless DC reduction motor is a common type of motor. Its structure mainly consists of stator, rotor, reduction device and control system. The stator is the stationary part, which is composed of iron core and coil, and generates magnetic field to interact with the rotor; the rotor is the rotating part, which is usually composed of permanent magnet or electromagnet, and rotates under the action of stator magnetic field; the reduction device reduces the output speed and increases the torque through gears, belts or transmission devices. Brushless DC reduction motor plays an important role in industrial production, household appliances, automobile industry, robotics and other fields, and the connection between the housing and the front cover of the brushless DC reduction motor is generally a flange or bolted structure.

[0003] Or as disclosed in the authorization announcement number CN206379798U, a permanent magnet brushless DC motor with a removable end cover comprises a shell, the top and bottom of the inner cavity of the shell are fixedly connected to a stator, the left side of the inner cavity of the shell is fixedly connected to a fixing plate, the right side of the shell is fixedly connected to a front end cover, and the middle axis on the left side of the front end cover is fixedly connected to a first fixed shaft. By arranging bolts and nuts, the effect of facilitating the removal of the rear end cover is achieved. However, when calibrating the hole positions and bolts, this technical solution requires the staff to accurately align the front end of the shell with the end cover concentrically. However, requiring the staff to accurately align the front end of the shell with the end cover is a tedious and time-consuming task. Even a slight deviation may cause the front end of the shell to be not completely concentric with the end cover. On the production line, if each motor needs to spend a lot of time to calibrate, it will undoubtedly lead to a decrease in production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a brushless DC reduction motor with an end cover quick-installation function, and to add a double-column calibration structure between the brushless DC reduction motor body and the rear skirt of the front end cover to facilitate the staff to calibrate and position the bolt connection points between the front end cover and the motor housing, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a brushless DC reduction motor with an end cover quick-installation function, comprising a brushless DC reduction motor housing and a front end cover arranged on one side of the brushless DC reduction motor housing, the front end cover and the brushless DC reduction motor housing are respectively integrally formed with a rear skirt and a front skirt on the outer wall on the opposite side, the outer wall of the rear skirt on one side close to the front skirt is provided with a double-column calibration structure connected to the outer wall of the brushless DC reduction motor housing, a hollow groove is provided on the outer wall of one side of the front skirt, and a U-shaped support plate is installed on the outer wall of the other side of the front skirt, an arc-shaped docking plate for plugging with the hollow groove and the U-shaped support plate is installed on the outer wall of the rear skirt on one side close to the front skirt, a double-pin-end elastic positioning structure is installed on the top of the U-shaped support plate, and two symmetrical countersunk holes are provided on the outer wall of one side of the front end cover, and a long bolt is installed inside the countersunk hole, and the threaded end of the long bolt extends to the inside of the brushless DC reduction motor housing.

[0006] Preferably, the double-column calibration structure includes trapezoidal cam 2 integrally formed on the front and rear outer walls of the rear skirt, and a calibration rod fixed on the outer wall of one side of trapezoidal cam 2. Trapezoidal cam 1 is fixed to one end of the surface of the brushless DC reduction motor housing, and a positioning hole is provided inside the trapezoidal cam 1 for interference fit with the calibration rod.

[0007] Preferably, a triangular convex core and an inner groove are respectively provided on the outer walls on the opposite sides of the front skirt and the rear skirt, and the triangular convex core and the inner groove are fitted and plugged into each other.

[0008] Preferably, an internal thread groove concentric with the long bolt is provided at one end of the brushless DC reduction motor housing close to the rear skirt.

[0009] Preferably, the front end cover and the rear skirt are both made of aluminum alloy.

[0010] Preferably, the double-pin-end elastic positioning structure includes a hollow tube column installed on the top of the U-shaped support plate, and a pin rod slidably installed inside the hollow tube column, the bottom end of the pin rod passes through the outside of the U-shaped support plate, a sliding button is fixed to the top of the pin rod, a retaining ring is installed at one end of the pin rod surface, a coil spring is fixed to the top of the retaining ring, and two completely penetrating limiting holes are provided at the top of the arc-shaped docking plate, and the limiting holes and the pin rod are concentric with each other.

[0011] Compared with the prior art, the beneficial effect of the utility model is that the brushless DC reduction motor with the end cover quick-installation function is provided with a front end cover and a double-column calibration structure and other structures that cooperate with each other. When the shell and the end cover are connected, the double-column calibration structure can provide more accurate positioning and alignment functions. In this way, the error in the assembly process can be reduced, and the staff can complete the calibration and positioning of the bolt connection points of the front end cover and the brushless DC reduction motor housing more quickly, thereby saving production line assembly time and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 3 It is a three-dimensional structural schematic diagram of the brushless DC reduction motor body and the front end cover of the utility model in a separated state;

[0015] Figure 4 It is a schematic diagram of the main partial cross-sectional structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the three-dimensional structure of the front end cover of the utility model;

[0017] In the figure: 1. housing of brushless DC reduction motor; 101. trapezoidal convex corner 1; 102. positioning hole; 2. front skirt; 3. front end cover; 301. countersunk hole; 302. trapezoidal convex corner 2; 303. calibration rod; 4. rear skirt; 5. long bolt; 6. arc-shaped docking plate; 601. limiting hole; 7. hollow groove; 8. U-shaped support plate; 9. double-pin end elastic positioning structure; 10. triangular convex core; 11. inner groove. DETAILED DESCRIPTION

[0018] 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. 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.

[0019] See also Figure 1-5, the utility model provides an embodiment: a brushless DC reduction motor with an end cover quick-installation function, comprising a brushless DC reduction motor housing 1 and a front end cover 3 arranged on one side of the brushless DC reduction motor housing 1, the front end cover 3 and the brushless DC reduction motor housing 1 are respectively integrally formed with a rear skirt 4 and a front skirt 2 on the outer wall on the opposite side, the rear skirt 4 is provided with a double-column calibration structure connected to the outer wall of the brushless DC reduction motor housing 1 on the outer wall on one side close to the front skirt 2, a hollow groove 7 is provided on the outer wall on one side of the front skirt 2, and a U-shaped support plate 8 is installed on the outer wall on the other side of the front skirt 2, an arc-shaped docking plate 6 for plugging with the hollow groove 7 and the U-shaped support plate 8 is installed on the outer wall on the side of the rear skirt 4 close to the front skirt 2, a double-pin end elastic positioning structure 9 is installed on the top of the U-shaped support plate 8, two symmetrical countersunk holes 301 are provided on the outer wall on one side of the front end cover 3, a long bolt 5 is installed inside the countersunk hole 301, and the threaded end of the long bolt 5 extends to the inside of the brushless DC reduction motor housing 1;

[0020] An inner thread groove concentric with the long bolt 5 is provided at one end of the brushless DC reduction motor housing 1 close to the rear skirt 4. The long bolt 5 is taken out, and the threaded end of the long bolt 5 is passed through the countersunk hole 301 until it is screwed into the interior of the brushless DC reduction motor housing 1, so that the front cover 3 and the brushless DC reduction motor housing 1 are preliminarily bolted together;

[0021] The double-column calibration structure includes a trapezoidal convex angle 2 302 integrally formed on the front and rear outer walls of the rear skirt 4, and a calibration rod 303 fixed on the outer wall of one side of the trapezoidal convex angle 2 302. A trapezoidal convex angle 101 is fixed to one end of the surface of the brushless DC reduction motor housing 1, and a positioning hole 102 is provided inside the trapezoidal convex angle 101 for interference fit with the calibration rod 303;

[0022] When the front cover 3 and the brushless DC reduction motor housing 1 are calibrated, the calibration rod 303 on the back of the trapezoidal convex corner 302 is inserted into the positioning hole 102. At this time, the calibration rod 303 and the positioning hole 102 are in an interference fit state, so as to facilitate the subsequent bolting operation of the staff and reduce the operating errors and errors of the staff during the assembly process;

[0023] A triangular convex core 10 and an inner groove 11 are respectively arranged on the outer walls of the front skirt 2 and the rear skirt 4 on the opposite side. The triangular convex core 10 and the inner groove 11 are mutually matched and plugged. The plug-in cooperation of the triangular convex core 10 and the inner groove 11 can also help the staff to calibrate and connect the rear skirt 4 and the front skirt 2, so that the two can be easily and quickly plugged in.

[0024] The front end cover 3 and the rear skirt 4 are both made of aluminum alloy. The use of aluminum alloy to manufacture the front end cover 3 and the rear skirt 4 can effectively reduce the overall weight of the motor;

[0025] The double-pin-end elastic positioning structure 9 includes a hollow pipe column installed on the top of the U-shaped support plate 8, and a pin rod slidably installed inside the hollow pipe column. The bottom end of the pin rod penetrates the outside of the U-shaped support plate 8, a sliding button is fixed to the top of the pin rod, a retaining ring is installed on one end of the pin rod surface, a spiral spring is fixed to the top of the retaining ring, and two completely penetrating limiting holes 601 are provided on the top of the arc-shaped docking plate 6. The limiting holes 601 and the pin rod are concentric with each other. When the arc-shaped docking plate 6 is inserted into the hollow groove 7 and incorporated into the U-shaped support plate 8, the double-pin-end elastic positioning structure 9 is formed. The pin end of the positioning structure 9 is automatically pushed into the limiting hole 601; when the staff needs to plug the front cover 3 and the brushless DC reduction motor housing 1, the staff first releases the bolt connection restriction between the brushless DC reduction motor housing 1 and the front cover 3, and then the staff pulls up the slide button, and the slide button drives the pin rod and the retaining ring to move up together. At this time, the coil spring is compressed until the pin rod withdraws from the limiting hole 601, and the staff can pull the front cover 3 horizontally to separate the front cover 3 and the brushless DC reduction motor housing 1.

[0026] When the embodiment of the present application is in use, the staff first takes out the front end cover 3 and the brushless DC reduction motor housing 1 with assembly and connection, and then makes the rear skirt 4 and the front skirt 2 face each other. At this time, the staff adjusts the relative position relationship between the rear skirt 4 and the front skirt 2 and makes the double-column calibration structure on the back of the front end cover 3 connected to the brushless DC reduction motor housing 1 until the rear skirt 4 and the front skirt 2 face each other. The outer wall surfaces relative to each other fit together. At this time, the bolting holes between the front end cover 3 and the brushless DC reduction motor housing 1 are in a concentric state, so that the bolting points between the front end cover 3 and the brushless DC reduction motor housing 1 can be matched more accurately. Then the staff takes out the long bolt 5, and makes the threaded end of the long bolt 5 pass through the countersunk hole 301 until it is screwed into the interior of the brushless DC reduction motor housing 1, thereby making the front end cover 3 and the brushless DC reduction The motor housing 1 is initially bolted together. During the process of the rear skirt 4 and the front skirt 2 fitting together, the arc-shaped docking plate 6 will pass through the hollow groove 7 and be plugged into the U-shaped support plate 8. At this time, the two pin ends of the double-pin end elastic positioning structure 9 will automatically enter the limiting hole 601 of the arc-shaped docking plate 6, so as to use the double-pin end elastic positioning structure 9 to lock the U-shaped support plate 8 and the arc-shaped docking plate 6 to ensure a stable connection between the front end cover 3 and the brushless DC reduction motor housing 1. When the housing and end cover of the motor are connected, the double-column calibration structure can provide more accurate positioning and alignment functions. In this way, the error in the assembly process can be reduced, and the staff can complete the calibration and positioning of the bolting points of the front end cover 3 and the brushless DC reduction motor housing 1 more quickly, thereby saving production line assembly time and improving production efficiency.

Claims

1. A brushless DC reduction motor with end cover quick-installation function, characterized in that: The invention comprises a brushless DC reduction motor housing (1) and a front end cover (3) arranged on one side of the brushless DC reduction motor housing (1); a rear skirt (4) and a front skirt (2) are respectively integrally formed on the outer walls of the front end cover (3) and the brushless DC reduction motor housing (1) on the opposite sides; a double-column calibration structure connected to the outer wall of the brushless DC reduction motor housing (1) is arranged on the outer wall of the rear skirt (4) on the side close to the front skirt (2); a hollow groove (7) is arranged on the outer wall of one side of the front skirt (2); and the front skirt (2) is provided with a plurality of hollow grooves (7). A U-shaped support plate (8) is installed on the outer wall on the other side; an arc-shaped docking plate (6) for plugging with the hollow groove (7) and the U-shaped support plate (8) is installed on the outer wall on one side of the rear skirt (4) close to the front skirt (2); a double-pin-end elastic positioning structure (9) is installed on the top of the U-shaped support plate (8); two symmetrical countersunk holes (301) are arranged on the outer wall on one side of the front end cover (3); a long bolt (5) is installed inside the countersunk hole (301); and the threaded end of the long bolt (5) extends to the inside of the brushless DC reduction motor housing (1).

2. The brushless DC reduction motor with end cover quick-installation function according to claim 1, characterized in that: The double-column calibration structure comprises a trapezoidal convex corner 2 (302) integrally formed on the front and rear outer walls of the rear skirt (4), and a calibration rod (303) fixed on the outer wall of one side of the trapezoidal convex corner 2 (302); a trapezoidal convex corner 1 (101) is fixed to one end of the surface of the brushless DC reduction motor housing (1); and a positioning hole (102) is provided inside the trapezoidal convex corner 1 (101) for interference fit with the calibration rod (303).

3. The brushless DC reduction motor with end cover quick-installation function according to claim 1, characterized in that: A triangular convex core (10) and an inner groove (11) are respectively arranged on the outer walls of the front skirt (2) and the rear skirt (4) on the opposite side, and the triangular convex core (10) and the inner groove (11) are mutually matched and plugged.

4. The brushless DC reduction motor with end cover quick-installation function according to claim 1, characterized in that: An internal thread groove concentric with the long bolt (5) is provided at one end of the brushless DC reduction motor housing (1) close to the rear skirt (4).

5. The brushless DC reduction motor with end cover quick-installation function according to claim 1, characterized in that: The front end cover (3) and the rear skirt (4) are both made of aluminum alloy components.

6. The brushless DC reduction motor with end cover quick-installation function according to claim 1, characterized in that: The double-pin-end elastic positioning structure (9) comprises a hollow tube column mounted on the top of the U-shaped support plate (8), and a pin rod slidably mounted inside the hollow tube column, the bottom end of the pin rod passes through the outside of the U-shaped support plate (8), a sliding button is fixed to the top of the pin rod, a retaining ring is installed at one end of the surface of the pin rod, a coil spring is fixed to the top of the retaining ring, and two completely penetrating limiting holes (601) are provided at the top of the arc-shaped docking plate (6), and the limiting holes (601) and the pin rod are concentric with each other.

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