Sealing connection structure of direct current brushless motor driver

Abstract

The utility model discloses a sealing connection structure of a direct current brushless motor driver, which belongs to the technical field of motor drivers and comprises a mounting plate and a sealing shell fixed on the surface of the mounting plate, a plurality of heat conducting plates are fixed on the bottom wall of an inner cavity of the sealing shell, and a driving module for a direct current brushless motor is mounted on the surface of each heat conducting plate. A sealing cover is movably connected to the surface of the sealing shell, a cavity is formed in the sealing cover, two limiting plates are symmetrically fixed in the cavity of the sealing cover, moving holes are formed in the limiting plates, and fixing pins are movably connected to the interiors of the moving holes of the limiting plates; fixing holes matched with the fixing pins are formed in the inner walls of the two sides of the sealing shell, a fixing ring is fixed to the surface of the sealing cover, and a rotary button is rotationally connected into the fixing ring. The sealing connection structure of the direct current brushless motor driver not only has a good sealing effect, but also facilitates disassembly and assembly of the sealing cover and later maintenance.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor drivers, and particularly relates to a sealed connection structure of a direct current brushless motor driver. Background Technique

[0002] The composition of a brushless motor includes a housing, a rotor, a stator, a position sensor, a driver, etc. It has the characteristics of long service life and simple maintenance compared with a brushed motor. Therefore, it is widely used in various scenarios. As the main control element in a brushless motor, the stability of the driver's operation directly affects the output of the brushless motor.

[0003] During the installation of the existing direct current brushless motor driver, in order to seal and protect the driver, the driver is mostly installed in a housing, and the housing of the driver is mostly fixed on a base through multiple bolts. When the driver needs to be disassembled and assembled, multiple bolts need to be turned, resulting in low disassembly and assembly efficiency of the driver. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a sealed connection structure of a direct current brushless motor driver to solve the problem that the housing of the driver is mostly fixed on a base through multiple bolts, and when the driver needs to be disassembled and assembled, multiple bolts need to be turned, resulting in low disassembly and assembly efficiency of the driver as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A sealed connection structure of a direct current brushless motor driver, including a mounting plate and a sealed housing fixed on the surface of the mounting plate. A plurality of heat conducting plates are fixed on the bottom wall of the inner cavity of the sealed housing, and a driving module for a direct current brushless motor is installed on the surface of the heat conducting plate;

[0006] The surface of the sealed housing is movably connected with a sealed cover. A cavity is opened in the sealed cover, and two limiting plates are symmetrically fixed in the cavity of the sealed cover. A moving hole is opened in the limiting plate, and a fixing pin is movably connected in the moving hole of the limiting plate. Fixing holes matching the fixing pins are opened on both inner walls of the sealed housing. A fixing ring is fixed on the surface of the sealed cover, and a rotary knob is rotatably connected in the fixing ring.

[0007] In a further embodiment, two terminals are symmetrically installed on the surface of the driving module. A sealing sleeve is sleeved outside the terminal, and two sealing plates fitting the sealing sleeve are symmetrically fixed at the bottom of the sealed cover.

[0008] In a further embodiment, push plates are fixed on the opposite surfaces of the two fixing pins, and a support spring for supporting the push plate is sleeved outside the fixing pin.

[0009] In a further embodiment, a rotating column is fixed to the bottom of the rotary knob, and a cam for pushing the push plate is fixed to the bottom of the rotating column.

[0010] In a further embodiment, a plurality of rotating grooves are formed in the limiting plate, and a sliding ball that fits with the fixing pin is rotatably connected in the rotating groove of the limiting plate.

[0011] In a further embodiment, a threaded hole is formed in the outer wall of one side of the fixing ring, and a fixing bolt is threadedly connected in the threaded hole of the fixing ring.

[0012] Technical effects and advantages of the present utility model:

[0013] For the sealed connection structure of the DC brushless motor driver, the rotary knob drives the rotating column and the cam to rotate, the cam pushes the two push plates to move, thereby driving the fixing pin to move. At the same time, the push plate presses the supporting spring, so that the fixing pin is inserted into the fixing hole of the sealing shell, and the installation between the sealing shell and the sealing cover can be quickly completed. Rotating the rotary knob in the reverse direction releases the support of the cam on the push plate, the supporting spring pushes the push plate and the fixing pin to reset, and the fixing pin is separated from the fixing hole on the sealing shell, so that the disassembly of the sealing cover can be quickly completed, thereby improving the disassembly and assembly efficiency of the drive module and facilitating later maintenance;

[0014] By covering the sealing cover above the sealing shell, the top of the sealing shell can be effectively sealed. At the same time, the sealing sleeve outside the terminal, together with the sealing plate on the bottom of the sealing cover that fits with the sealing sleeve, comprehensively seals the sealing shell, ensuring the protection effect on the drive module. The sealed connection structure of the DC brushless motor driver not only has a good sealing effect, but also is convenient for disassembling and assembling the sealing cover and facilitating later maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a structural schematic diagram of the present utility model;

[0017] Figure 2 It is a structural schematic diagram of the mounting plate and the sealing shell of the present utility model;

[0018] Figure 3 It is a cross-sectional view of the mounting plate and the sealing shell of the present utility model;

[0019] Figure 4Cross-sectional view of the sealing cover of the present utility model;

[0020] Figure 5 Of the present utility model Figure 4 Enlarged view of part A in;

[0021] Figure 6 Schematic structural diagram of the fixing ring and the rotating knob of the present utility model.

[0022] In the figure: 1, mounting plate; 2, sealing shell; 3, heat conducting plate; 4, drive module; 5, terminal; 6, sealing sleeve; 7, sealing cover; 8, sealing plate; 9, limiting plate; 10, fixing pin; 11, push plate; 12, supporting spring; 13, sliding ball; 14, fixing ring; 15, rotating knob; 16, rotating column; 17, cam; 18, fixing bolt. Detailed implementation manners

[0023] In the following description, numerous specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details. In other instances, in order to avoid confusion with the present utility model, some well-known technical features are not described.

[0024] Unless otherwise defined, the directions such as up, down, left, right, front, back, inner and outer involved herein are based on the up, down, left, right, front, back, inner and outer in the figures shown in the present utility model, and are hereby explained together.

[0025] Please refer to Figures 1-6, the present utility model provides a sealed connection structure for a DC brushless motor driver, including a mounting plate 1 and a sealing shell 2 fixed on the surface of the mounting plate 1. The mounting plate 1 and the sealing shell 2 are integrally formed. Threaded holes are provided at the four corners of the surface of the mounting plate 1, and it is convenient to fix the mounting plate 1 in a suitable position through bolts. A plurality of heat-conducting plates 3 are fixed on the bottom wall of the inner cavity of the sealing shell 2. A driving module 4 for a DC brushless motor is installed on the surface of the heat-conducting plate 3. The driving module 4 is a prior art, and its structure will not be elaborated here too much. Two terminals 5 are symmetrically installed on the surface of the driving module 4. The driving module 4 is connected to external components through the terminals 5. A sealing sleeve 6 is sleeved outside the terminal 5. Moving grooves for the movement of the terminals 5 are provided on both outer walls of the sealing shell 2. A sealing cover 7 is movably connected to the surface of the sealing shell 2. A through groove matching the shape of the sealing shell 2 is provided at the bottom of the sealing cover 7. Two sealing plates 8 that fit with the sealing sleeve 6 are symmetrically fixed at the bottom of the sealing cover 7. By covering the sealing cover 7 above the sealing shell 2, the top of the sealing shell 2 can be effectively sealed. At the same time, the sealing sleeve 6 outside the terminal 5 and the sealing plate 8 at the bottom of the sealing cover 7 that fits with the sealing sleeve 6 are used to comprehensively seal the sealing shell 2, ensuring the protection effect on the driving module 4;

[0026] A cavity is provided inside the sealing cover 7, and two limiting plates 9 are symmetrically fixed in the cavity of the sealing cover 7 through bolts. Moving holes are provided on the limiting plates 9. A fixing pin 10 is movably connected in the moving holes of the limiting plates 9. Fixing holes matching the fixing pin 10 are provided on both inner walls of the sealing shell 2. Push plates 11 are fixed on the opposite surfaces of the two fixing pins 10, and a supporting spring 12 for supporting the push plates 11 is sleeved outside the fixing pins 10. A plurality of rotating grooves are provided inside the limiting plates 9. A sliding ball 13 that fits with the fixing pin 10 is rotatably connected in the rotating grooves of the limiting plates 9. The sliding ball 13 can make the fixing pin 10 move more smoothly inside the limiting plates 9;

[0027] A fixing ring 14 is fixed on the surface of the sealing cover 7, and a rotary knob 15 is rotatably connected inside the fixing ring 14. A rotating column 16 is fixed at the bottom of the rotary knob 15. The rotating column 16 is rotatably connected to the bottom plate of the sealing cover 7 through a bearing. A cam 17 for pushing a push plate 11 is fixed at the bottom of the rotating column 16. A threaded hole is formed in the outer wall of one side of the fixing ring 14, and a fixing bolt 18 is threadedly connected in the threaded hole of the fixing ring 14. By tightening the fixing bolt 18, the position of the rotary knob 15 can be fixed to prevent the rotary knob 15 from accidentally rotating. By driving the rotating column 16 and the cam 17 to rotate through the rotary knob 15, the cam 17 pushes the two push plates 11 to move, thereby driving the fixing pin 10 to move. At the same time, the push plate 11 compresses the support spring 12, so that the fixing pin 10 is inserted into the fixing hole of the sealing shell 2, and the installation between the sealing shell 2 and the sealing cover 7 can be quickly completed. By rotating the rotary knob 15 in the reverse direction, the support of the cam 17 on the push plate 11 is released, and the support spring 12 pushes the push plate 11 and the fixing pin 10 to reset, and the fixing pin 10 is separated from the fixing hole on the sealing shell 2, so that the disassembly of the sealing cover 7 can be quickly completed, thereby improving the disassembly and assembly efficiency of the drive module 4 and facilitating later maintenance.

[0028] The standard parts used in the present utility model can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The control mode of the present utility model is controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0029] In the description of the present utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0030] Working principle:

[0031] For the sealed connection structure of this DC brushless motor driver, during use, the sealing shell 2 is fixed in a suitable position by bolts cooperating with the threaded holes on the mounting plate 1. At the same time, the drive module 4 is installed on the surface of the heat conducting plate 3, and then the sealing cover 7 is covered on the sealing shell 2. The sealing shell 2 is inserted into the through groove at the bottom of the sealing cover 7. By driving the rotating column 16 and the cam 17 to rotate through the rotating knob 15, the cam 17 pushes the two push plates 11 to move, thereby driving the fixing pin 10 to move. At the same time, the push plate 11 squeezes the supporting spring 12, so that the fixing pin 10 is inserted into the fixing hole of the sealing shell 2, and the installation between the sealing shell 2 and the sealing cover 7 can be quickly completed. Tighten the fixing bolt 18 to fix the position of the rotating knob 15 to prevent the rotating knob 15 from accidentally rotating. At the same time, the sealing plate 8 fits on the surface of the sealing sleeve 6 outside the terminal 5, thereby comprehensively sealing the sealing shell 2;

[0032] When maintenance of the drive module 4 is required, loosen the fixing bolt 18 and rotate the rotating knob 15 in the reverse direction. The cam 17 is separated from the push plate 11, and the support of the cam 17 on the push plate 11 is released. The supporting spring 12 pushes the push plate 11 and the fixing pin 10 to reset, and the fixing pin 10 is separated from the fixing hole on the sealing shell 2. Move the sealing cover 7 upward, and the disassembly of the sealing cover 7 can be quickly completed, thereby facilitating the maintenance of the drive module 4.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealed connection structure of a DC brushless motor driver, comprising a mounting plate (1) and a sealing shell (2) fixed on the surface of the mounting plate (1), characterized in that: A plurality of heat conducting plates (3) are fixed to the bottom wall of the inner cavity of the sealing shell (2), and a driving module (4) for a DC brushless motor is mounted on the surface of the heat conducting plate (3); A sealing cover (7) is movably connected to the surface of the sealing shell (2). A cavity is formed in the sealing cover (7), and two limiting plates (9) are symmetrically fixed in the cavity of the sealing cover (7). A moving hole is formed in the limiting plate (9), and a fixing pin (10) is movably connected in the moving hole of the limiting plate (9). Fixing holes matching the fixing pins (10) are formed in both inner side walls of the sealing shell (2). A fixing ring (14) is fixed to the surface of the sealing cover (7), and a rotary knob (15) is rotatably connected in the fixing ring (14).

2. The sealed connection structure of a DC brushless motor driver according to claim 1, characterized in that: Two terminals (5) are symmetrically mounted on the surface of the driving module (4). A sealing sleeve (6) is sleeved outside the terminal (5), and two sealing plates (8) fitting the sealing sleeve (6) are symmetrically fixed to the bottom of the sealing cover (7).

3. The sealed connection structure of a DC brushless motor driver according to claim 1, characterized in that: Push plates (11) are fixed to opposite surfaces of the two fixing pins (10), and a support spring (12) for supporting the push plates (11) is sleeved outside the fixing pins (10).

4. A sealed connection structure of a DC brushless motor driver according to claim 3, characterized in that: A rotating column (16) is fixed to the bottom of the rotary knob (15), and a cam (17) for pushing the push plates (11) is fixed to the bottom of the rotating column (16).

5. A sealing connection structure of a DC brushless motor driver according to claim 1, characterized in that: A plurality of rotating grooves are formed in the limiting plate (9), and sliding balls (13) fitting the fixing pins (10) are rotatably connected in the rotating grooves of the limiting plate (9).

6. The sealed connection structure of a DC brushless motor driver according to claim 1, characterized in that: A threaded hole is formed in one outer wall of the fixing ring (14), and a fixing bolt (18) is threadedly connected in the threaded hole of the fixing ring (14).

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