Miniature coreless direct current motor convenient to disassemble

Abstract

The utility model provides a miniature hollow cup direct current motor convenient to disassemble, which comprises a mounting rack, a rotating rod rotatably connected in the mounting rack, a fixing rack fixedly connected on the surface of the rotating rod, a motor arranged in the fixing rack, a positioning groove arranged in the mounting rack, and a positioning block slidably connected in the positioning groove. And two fixing holes are formed in the positioning block. According to the miniature hollow cup direct current motor convenient to disassemble provided by the utility model, the fixed handle is moved towards one side to drive the two fixed rods to be connected with the two fixed pins to move towards one side, and after the fixed rods are separated from the two fixed holes, the fixed frame is opened, and the motor is taken out. And meanwhile, the fixed handle is limited through the limiting pin, so that vibration generated when the motor works is prevented, the fixed handle is made to move, and the fixing effect is improved.

Description

Technical Field

[0001] The utility model relates to the field of micro coreless DC motors, in particular to a micro coreless DC motor which is convenient to disassemble. Background Art

[0002] The coreless motor belongs to a DC permanent magnet servo and control motor, and can also be classified as a micro special motor. The coreless motor has outstanding energy-saving characteristics, sensitive and convenient control characteristics, and stable operation characteristics, and its technological advancement is very obvious. As a high-efficiency energy conversion device, it represents the development direction of motors in many fields.

[0003] At present, micro coreless DC motors are applied in medical equipment with high requirements for volume, noise and precision, such as dental drills in dental instruments. However, the current micro coreless DC motors are usually fixed to the mounting bracket by screws, so as to facilitate the disassembly of the micro coreless DC motor during the later maintenance of the dental drill.

[0004] Therefore, it is necessary to provide a micro coreless DC motor which is convenient to disassemble to solve the above technical problems. Summary of the Utility Model

[0005] The utility model provides a micro coreless DC motor which is convenient to disassemble, and solves the problem that it is not convenient to disassemble the micro coreless DC motor at present.

[0006] To solve the above technical problems, the micro coreless DC motor which is convenient to disassemble provided by the utility model includes:

[0007] A mounting bracket, a rotating rod is rotatably connected inside the mounting bracket, a fixing bracket is fixedly connected to the surface of the rotating rod, and a motor is arranged inside the fixing bracket;

[0008] A positioning groove is arranged inside the mounting bracket, a positioning block is slidably connected inside the positioning groove, and two fixing holes are opened inside the positioning block;

[0009] Two fixing grooves are arranged inside the mounting bracket, fixing pins are slidably connected inside the two fixing grooves respectively, fixing rods are fixedly connected to one ends of the two fixing pins respectively, a fixing handle is fixedly connected to one ends of the two fixing rods respectively, a limiting pin is slidably connected inside the fixing handle, and a magnet is fixedly connected inside the limiting pin.

[0010] Preferably, one ends of the two fixing pins are respectively slidably connected inside the two fixing grooves, and the other ends are respectively slidably connected inside the two fixing holes.

[0011] Preferably, a torsion spring is sleeved on the surface of the rotating rod, and two ends of the torsion spring are fixedly connected to the inside of the mounting bracket and the fixed bracket respectively.

[0012] Preferably, two filter elements are fixedly installed inside the mounting bracket and are located on the opposite surfaces of both sides of the mounting bracket respectively.

[0013] Preferably, a moving rod is fixedly connected to one side of the fixed handle, a moving groove is formed inside the moving rod, and a moving plate is slidably connected inside the moving groove.

[0014] Preferably, a reset groove is formed inside the mounting bracket, and a reset block is slidably connected inside the reset groove.

[0015] Preferably, a reset spring is arranged at the bottom of the reset block, and the reset spring is arranged inside the reset groove.

[0016] Compared with the related art, a detachable micro coreless DC motor provided by the present utility model has the following beneficial effects:

[0017] The present utility model provides a detachable micro coreless DC motor. By moving the fixed handle to one side, the two fixed rods connected with the two fixed pins are driven to move to one side. After separating from the two fixed holes, the fixed bracket is opened, and then the motor can be taken out, thus facilitating the quick installation and disassembly of the motor. At the same time, the fixed handle is limited by the limit pin, so as to prevent the fixed handle from moving due to the vibration generated during the operation of the motor, and increasing the fixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a first embodiment of a detachable micro coreless DC motor provided by the present utility model;

[0019] Figure 2 is Figure 1 a schematic structural diagram of the whole mounting bracket shown;

[0020] Figure 3 is Figure 1 a schematic cross-sectional structural diagram of the whole mounting bracket shown;

[0021] Figure 4 is Figure 3 a schematic enlarged view of part A shown;

[0022] Figure 5 is a schematic structural diagram of a second embodiment of a detachable micro coreless DC motor provided by the present utility model;

[0023] Figure 6 is Figure 5Schematic structural diagram of the movable rod shown

[0024] Reference numerals in the figure: 1, mounting bracket; 2, fixing bracket; 3, motor; 4, positioning groove; 41, positioning block; 42, fixing hole; 5, fixing groove; 51, fixing pin; 52, fixing rod; 53, fixing spring; 54, fixing handle; 6, limit pin; 7, magnet; 8, rotating rod; 9, torsion spring; 10, filter element; 11, movable rod; 12, moving groove; 13, moving plate; 14, reset groove; 15, reset block; 16, reset spring Detailed implementation manners

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and implementation manners

[0026] First embodiment

[0027] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , where Figure 1 is a schematic structural diagram of the first embodiment of a micro coreless DC motor provided by the present utility model that is easy to disassemble; Figure 2 is Figure 1 a schematic structural diagram of the overall mounting bracket shown; Figure 3 is Figure 1 a schematic cross-sectional structural diagram of the overall mounting bracket shown; Figure 4 is Figure 3 an enlarged schematic view of part A shown. A micro coreless DC motor that is easy to disassemble includes:

[0028] Mounting bracket 1, a rotating rod 8 is rotatably connected inside the mounting bracket 1, a fixing bracket 2 is fixedly connected to the surface of the rotating rod 8, and a motor 3 is arranged inside the fixing bracket 2;

[0029] Positioning groove 4, the positioning groove 4 is arranged inside the mounting bracket 1, a positioning block 41 is slidably connected inside the positioning groove 4, and two fixing holes 42 are opened inside the positioning block 41;

[0030] Two fixing grooves 5, both of the two fixing grooves 5 are arranged inside the mounting bracket 1, fixing pins 51 are slidably connected inside both of the two fixing grooves 5, one ends of the two fixing pins 51 are fixedly connected to fixing rods 52, one ends of the two fixing rods 52 are fixedly connected to a fixing handle 54, a limit pin 6 is slidably connected inside the fixing handle 54, and a magnet 7 is fixedly connected inside the limit pin 6.

[0031] The inside of the fixing bracket 2 is adapted to the outer shape of the motor 3.

[0032] The positioning groove 4 is opened inside the mounting bracket 1. The bottom of the positioning block 41 is arc-shaped, and the top of the fixing pin 51 is also arc-shaped. Thus, after the fixing pin 51 is reset, when the fixing bracket 2 rotates and closes to one side, after the arc-shaped surface of the positioning block 41 contacts the arc-shaped surface of the fixing pin 51, it squeezes the fixing pin 51 to automatically move to one side. And after the positioning block 41 moves to a suitable position, the fixing spring 53 pushes the fixing pin 51 into the fixing hole 42 to limit the positioning block 41.

[0033] The mounting bracket 1 and the fixing handle 54 are internally provided with limiting grooves adapted to the limiting pin 6 for limiting the fixing handle 54 after the limiting pin 6 is inserted into the limiting grooves. At the same time, magnets 7 are fixedly connected to the inside of both the limiting pin 6 and the mounting bracket 1 for limiting the limiting pin 6 after the two magnets 7 are adsorbed to each other after the limiting pin 6 is inserted into the limiting grooves.

[0034] One end of each of the two fixing pins 51 is slidably connected to the inside of each of the two fixing grooves 5, and the other end is slidably connected to the inside of each of the two fixing holes 42.

[0035] A torsion spring 9 is sleeved on the surface of the rotating rod 8, and both ends of the torsion spring 9 are fixedly connected to the inside of the mounting bracket 1 and the fixing bracket 2 respectively.

[0036] The torsion spring 9 is used to reset the torsion spring 9 after the two fixing pins 51 are separated from the two fixing holes 42, so that the fixing bracket 2 automatically rotates and opens to one side.

[0037] Two filter elements 10 are fixedly installed inside the mounting bracket 1 and are respectively located on the opposite sides of both sides of the mounting bracket 1.

[0038] The two filter elements 10 are dust-proof nets for dissipating the heat inside the mounting bracket 1.

[0039] The working principle of a micro coreless DC motor provided by the present utility model that is easy to disassemble is as follows:

[0040] During use, after the limiting pin 6 is moved upward and taken out, the fixing handle 54 is moved to one side to drive the two fixing rods 52 to move to one side. When the two fixing rods 52 move to one side, they drive the two fixing pins 51 to move to one side inside the two fixing grooves 5 respectively, and at the same time, the two fixing springs 53 are squeezed. When the fixing pins 51 are separated from the two fixing holes 42.

[0041] After the fixing bracket 2 is rotated to one side to drive the rotating rod 8 to rotate and open to one side, the motor 3 can be taken out.

[0042] After placing the repaired motor 3 inside the mounting frame 1, rotate the fixing frame 2 to the side to close it. After the positioning block 41 enters the positioning slot 4, release the fixing handle 54. Then, the two fixing springs 53 push the two fixing pins 51 to move to one side and enter the two fixing holes 42 to limit the fixing frame 2. After that, insert the limit pin 6.

[0043] Compared with the related art, a detachable micro coreless DC motor provided by the present utility model has the following beneficial effects:

[0044] The present utility model provides a detachable micro coreless DC motor. By moving the fixing handle 54 to one side, the two fixing rods 52 connected to the two fixing pins 51 are driven to move to one side. After separating from the two fixing holes 42, open the fixing frame 2 and then take out the motor 3, which facilitates the quick installation and disassembly of the motor 3. At the same time, the limit pin 6 limits the fixing handle 54 to prevent the fixing handle 54 from moving due to the vibration generated when the motor 3 is working, thereby increasing the fixing effect.

[0045] Second Embodiment

[0046] Please refer to Figure 5 and Figure 6 , based on a detachable micro coreless DC motor provided in the first embodiment of the present application, the second embodiment of the present application proposes another detachable micro coreless DC motor. The second embodiment is only a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0047] Specifically, the difference of a detachable micro coreless DC motor provided in the second embodiment of the present application is that for a detachable micro coreless DC motor, a moving rod 11 is fixedly connected to one side of the fixing handle 54. A moving slot 12 is provided inside the moving rod 11, and a moving plate 13 is slidably connected inside the moving slot 12.

[0048] The moving rod 11 is slidably connected inside the mounting frame 1.

[0049] One end of the moving plate 13 is fixedly connected to one side of the reset block 15.

[0050] A reset slot 14 is provided inside the mounting frame 1, and a reset block 15 is slidably connected inside the reset slot 14.

[0051] A reset spring 16 is provided at the bottom of the reset block 15, and the reset spring 16 is provided inside the reset slot 14.

[0052] The working principle of a micro coreless DC motor that is easy to disassemble provided by the present utility model is as follows:

[0053] During use, by pressing the moving plate 13 downward, it moves downward inside the moving slot 12. When the moving plate 13 moves downward, it squeezes the fixed handle 54 to move to one side, causing the fixed pin 51 to separate from the fixed hole 42. At the same time, when the moving plate 13 moves downward, it drives the reset block 15 to move downward inside the reset slot 14 while squeezing the reset spring 16.

[0054] After releasing the moving plate 13, the reset spring 16 pushes the reset block 15 to move upward and reset inside the reset slot 14, thereby driving the moving plate 13 to reset.

[0055] Compared with the related art, a micro coreless DC motor that is easy to disassemble provided by the present utility model has the following beneficial effects:

[0056] The present utility model provides a micro coreless DC motor that is easy to disassemble. By pressing the moving plate 13 downward, the fixed handle 54 automatically moves and separates to one side, facilitating the movement of the fixed handle 54 to one side. At the same time, the moving plate 13 can limit the fixed handle 54.

[0057] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A miniature coreless DC motor that is easy to disassemble, characterized in that, Including: A mounting frame, inside which a rotating rod is rotatably connected. A fixed frame is fixedly connected to the surface of the rotating rod, and a motor is arranged inside the fixed frame. A positioning groove, which is arranged inside the mounting frame. A positioning block is slidably connected inside the positioning groove, and two fixing holes are opened inside the positioning block. Two fixing grooves, both of which are arranged inside the mounting frame. Fixing pins are slidably connected inside both of the two fixing grooves. One end of each of the two fixing pins is fixedly connected to a fixing rod, and one end of each of the two fixing rods is fixedly connected to a fixing handle. A limiting pin is slidably connected inside the fixing handle, and a magnet is fixedly connected inside the limiting pin.

2. The miniature coreless DC motor according to claim 1, wherein One end of each of the two fixing pins is slidably connected inside each of the two fixing grooves, and the other end is slidably connected inside each of the two fixing holes.

3. A detachable micro coreless DC motor according to claim 1, characterized in that, A torsion spring is sleeved on the surface of the rotating rod, and both ends of the torsion spring are fixedly connected inside the mounting frame and the fixed frame respectively.

4. A detachable micro coreless DC motor according to claim 1, wherein, Two filtering elements are fixedly installed inside the mounting frame and are located on the opposite surfaces on both sides of the mounting frame respectively.

5. A detachable micro coreless DC motor according to claim 1, characterized in that One side of the fixing handle is fixedly connected to a moving rod, a moving groove is opened inside the moving rod, and a moving plate is slidably connected inside the moving groove.

6. The miniaturized cup-shaped DC motor as claimed in claim 4, wherein, A reset groove is opened inside the mounting frame, and a reset block is slidably connected inside the reset groove.

7. A detachable micro coreless DC motor according to claim 6, characterized in that, A reset spring is arranged at the bottom of the reset block, and the reset spring is arranged inside the reset groove.

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