PCB (printed circuit board) printing stator plate for coreless permanent magnet motor

Abstract

The invention discloses a pcb printing stator plate for a coreless permanent magnet motor, and belongs to the technical field of coreless permanent magnet motors, the pcb printing stator plate comprises a plate body, the inner wall of the plate body is fixedly sleeved with a clamping mechanism, and the top end of the plate body is fixedly connected with a connector; the clamping mechanism comprises a lower shell, the top end of the lower shell is rotationally connected with an upper shell, the inner wall of the lower shell is rotationally connected with multiple sets of rotating arms, the top ends of the multiple sets of rotating arms are each provided with a set of sliding grooves penetrating to the bottom ends of the rotating arms, and the inner wall of the upper shell is fixedly connected with multiple sets of sliding rods. The internal hexagonal wrench drives the worm to rotate, so that the upper shell rotates, the multiple sets of rotating arms are pushed to be close to each other, the chuck abuts against the outer portion of the motor shaft, the whole pcb printing stator plate and the motor shaft are tightly fixed together, the step of rotating multiple sets of bolts in the traditional installation process is omitted, and the installation efficiency is improved. The convenience in the mounting process of the pcb printing stator plate is improved, and the stator assembling efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of coreless permanent magnet motors, and specifically to a PCB printed stator plate for a coreless permanent magnet motor. Background Art

[0002] A coreless motor refers to a motor without a core component inside. Compared with a core motor, a coreless motor has lower costs, better durability, is lighter, more flexible, etc. It has a PCB board with printed coils as the stator, and the rotor forms a permanent magnet axial magnetic field. It is divided into two structures: the motor shaft rotates and the motor shaft is fixed. For the structure with the motor shaft fixed, the external load is driven to rotate by the rotation of the rotor. It has a small volume, a large moment of inertia, and good heat dissipation effect, and can be applied to motors of unmanned aerial vehicles or fans.

[0003] During the installation process of the existing PCB printed stator plate of a coreless permanent magnet motor, the PCB printed stator plate is sleeved outside the motor shaft, and then the PCB printed stator plate is fixed on the bracket by bolts. During the fixing process, multiple groups of bolts need to pass through the PCB printed stator plate and be screwed into the bracket respectively. The number and angle of the bolts to be screwed, so a large amount of time is consumed during the fixing of the PCB printed stator plate, resulting in low efficiency during the installation of the PCB printed stator plate and reducing the speed of motor stator assembly. Summary of the Invention

[0004] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide a PCB printed stator plate for a coreless permanent magnet motor. By rotating the worm, the worm drives the turbine to rotate, so that multiple groups of chucks flip and approach each other towards the middle to clamp the motor shaft.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a PCB printed stator plate for a coreless permanent magnet motor, including: a plate body, a clamping mechanism is fixedly sleeved on the inner wall of the plate body, and a connecting head is fixedly connected to the top end of the plate body;

[0006] The clamping mechanism includes a lower housing, an upper housing is rotatably connected to the top end of the lower housing, multiple groups of rotating arms are rotatably connected to the inner wall of the lower housing, a through groove is respectively opened at the top end of each group of rotating arms and penetrates to the bottom end of the rotating arm, and multiple groups of sliding rods are fixedly connected to the inner wall of the upper housing, and multiple groups of sliding rods are respectively slidably connected to the inner wall of a through groove;

[0007] Preferably, a turbine is fixedly sleeved on the outer wall of the upper housing, a worm is rotatably connected to the top end of the plate body, and the turbine meshes with the worm.

[0008] Preferably, a rotating groove is opened at the end of the worm, and the cross-section of the rotating groove is hexagonal.

[0009] Preferably, the ends of the multiple groups of rotating arms are respectively hinged with a group of clamps, and the side walls of the multiple groups of clamps are respectively fixedly connected with a group of rubber blocks.

[0010] Preferably, the connector includes a female connector, the female connector is fixedly connected to the top of the plate body, the inner wall of the female connector is slidably connected to a male connector, and the inner wall of the male connector is fixedly sleeved with a wire.

[0011] Preferably, two groups of limit blocks are rotatably connected to the inner wall of the male head, and a group of torsion springs are respectively provided at the connection between the two groups of limit blocks and the male head.

[0012] Preferably, the side wall of the male head is slidably connected to a sliding plate extending into the interior of the male head, and the end of the sliding plate is fixedly connected to two groups of protrusions located inside the male head, and the protrusions abut against the side wall of the limit block.

[0013] Preferably, two groups of inclined blocks are fixedly connected to the inner wall of the female head, and the positions of the two groups of inclined blocks correspond to the limiting blocks.

[0014] The beneficial effects of the present invention are:

[0015] 1. In the process of assembling the motor stator, the present invention sleeves the entire PCB printed stator plate onto the outside of the motor shaft, so that the plate body and the clamping mechanism are sleeved on the outside of the motor shaft, and then uses an inner hexagonal wrench to insert into the inside of the rotating groove, and drives the worm to rotate through the inner hexagonal wrench to rotate the upper shell body, thereby pushing multiple groups of rotating arms to move closer, so that the clamp abuts against the outside of the motor shaft, so that the entire PCB printed stator plate and the motor shaft are tightly fixed together, eliminating the step of rotating multiple groups of bolts in the traditional installation process, improving the convenience of the PCB printed stator plate installation process, and improving the stator assembly efficiency.

[0016] 2. The present invention connects the wire to the male connector in advance, then welds the female connector to the top of the board, and connects the wire to the board by inserting the male connector into the female connector, so that the wire can be easily disconnected from the board during subsequent maintenance, making the inspection and maintenance of the board more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1Schematic front view structure diagram of a PCB printed stator plate for a coreless permanent magnet motor provided by an embodiment of the present invention.

[0019] Figure 2 Schematic bottom view structure diagram of the present invention.

[0020] Figure 3 Schematic front view structure diagram of the exploded clamping mechanism of the present invention.

[0021] Figure 4 Schematic bottom view structure diagram of the exploded clamping mechanism of the present invention.

[0022] Figure 5 Schematic front view structure diagram of the exploded connector of the present invention.

[0023] Figure 6 Schematic front view structure diagram of the swing arm of the present invention.

[0024] Explanation of reference numerals: 1 - plate body, 2 - clamping mechanism, 3 - connector,

[0025] 201 - lower housing, 202 - upper housing, 203 - swing arm, 204 - sliding groove, 205 - sliding rod, 206 - chuck, 207 - turbine, 208 - worm, 209 - rotating groove,

[0026] 301 - female head, 302 - male head, 303 - wire, 304 - limiting block, 305 - sliding plate, 306 - convex block, 307 - inclined block. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1:

[0029] As Figures 1 to 6 shown, this embodiment provides a PCB printed stator plate for a coreless permanent magnet motor, including: a plate body 1, an inner wall of the plate body 1 is fixedly sleeved with a clamping mechanism 2, and a top end of the plate body 1 is fixedly connected with a connector 3;

[0030] The clamping mechanism 2 includes a lower housing 201. The top end of the lower housing 201 is rotatably connected to an upper housing 202. The inner wall of the lower housing 201 is rotatably connected with multiple groups of rotating arms 203. At the top ends of the multiple groups of rotating arms 203, a set of sliding grooves 204 penetrating to the bottom ends of the rotating arms 203 are respectively provided. The inner wall of the upper housing 202 is fixedly connected with multiple groups of sliding rods 205. The multiple groups of sliding rods 205 are respectively slidably connected to the inner walls of a set of sliding grooves 204. The outer wall of the upper housing 202 is fixedly sleeved with a turbine 207. The top end of the plate body 1 is rotatably connected with a worm 208. The turbine 207 is engaged with the worm 208. A rotating groove 209 is provided at the end of the worm 208. The cross-section of the rotating groove 209 is hexagonal. The ends of the multiple groups of rotating arms 203 are respectively hinged with a set of clamping heads 206. A set of rubber blocks are respectively fixedly connected to the side walls of the multiple groups of clamping heads 206.

[0031] Principle of this embodiment: During the assembly of the motor stator, the pcb printed stator plate is entirely sleeved outside the motor shaft, so that the plate body 1 and the clamping mechanism 2 are sleeved outside the motor shaft. Then, an inner hexagon wrench is inserted into the rotating groove 209, and then the inner hexagon wrench is rotated to drive the worm 208 to rotate, so that the worm 208 drives the turbine 207 to rotate. During the rotation of the turbine 207, the upper housing 202 is driven to rotate. The upper housing 202 drives the multiple groups of sliding rods 205 to rotate simultaneously, so that the multiple groups of sliding rods 205 simultaneously push the multiple groups of rotating rods to flip. During the flipping of the rotating rods, the clamping heads 206 are driven to flip, so that the multiple groups of clamping heads 206 move closer to the middle, and the multiple groups of clamping heads 206 abut against the outer wall of the motor shaft, realizing the fixation of the pcb printed stator plate.

[0032] Embodiment Two:

[0033] As Figure 5 shown, on the basis of retaining all the technical features in Specific Embodiment One (or what is different between this embodiment and Specific Embodiment One), in this embodiment: The connector 3 includes a female head 301. The female head 301 is fixedly connected to the top end of the plate body 1. A male head 302 is slidably connected to the inner wall of the female head 301. A wire 303 is fixedly sleeved on the inner wall of the male head 302. Two groups of limiting blocks 304 are rotatably connected to the inner wall of the male head 302. A set of torsion springs are respectively arranged at the connections of the two groups of limiting blocks 304 with the male head 302. A sliding plate 305 extending into the male head 302 is slidably connected to the side wall of the male head 302. Two convex blocks 306 located inside the male head 302 are fixedly connected to the end of the sliding plate 305. The convex blocks 306 abut against the side walls of the limiting blocks 304. Two inclined blocks 307 are fixedly connected to the inner wall of the female head 301. The positions of the two groups of inclined blocks 307 correspond to those of the limiting blocks 304.

[0034] Principle of this embodiment: By inserting the male head 302 into the female head 301, the limit block 304 slides into the female head 301 driven by the male head 302. During this process, the limit block 304 contacts the inclined block 307, causing the limit block 304 to flip under the pushing of the inclined block 307 and twist the torsion spring. After the limit block 304 completely slides past the inclined block 307, the torsion spring pushes the limit block 304 to reset. At this time, when pulling the male head 302 outwards, the limit block 304 is blocked by the plane of the inclined block 307, making it impossible for the male head 302 to slide out of the female head 301. When it is necessary to pull the male head 302 out of the female head 301, by pulling the sliding plate 305 upwards, the sliding plate 305 drives the convex block 306 to move, so that the convex block 306 pushes the limit block 304 to rotate and twist the torsion spring, making the limit block 304 unable to contact the inclined block 307. At this time, continue to pull the sliding plate 305 upwards so that the sliding plate 305 drives the male head 302 to slide out of the female head 301.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A PCB printed stator plate for a coreless permanent magnet motor, characterized in that, Including: A plate body (1), an inner wall of the plate body (1) is fixedly sleeved with a clamping mechanism (2), and a connection head (3) is fixedly connected to the top end of the plate body (1); The clamping mechanism (2) includes a lower housing (201), an upper housing (202) is rotatably connected to the top end of the lower housing (201), and a plurality of groups of rotating arms (203) are rotatably connected to the inner wall of the lower housing (201). A set of chutes (204) penetrating from the top ends of the plurality of groups of rotating arms (203) to the bottom ends of the rotating arms (203) are respectively opened at the top ends of the plurality of groups of rotating arms (203), and a plurality of groups of sliding rods (205) are fixedly connected to the inner wall of the upper housing (202), and the plurality of groups of sliding rods (205) are respectively slidably connected to the inner walls of a set of chutes (204).

2. The PCB printed stator plate for a coreless permanent magnet motor according to claim 1, wherein A turbine (207) is fixedly sleeved on the outer wall of the upper housing (202), a worm (208) is rotatably connected to the top end of the plate body (1), and the turbine (207) is meshed with the worm (208).

3. The pcb printed stator plate for a coreless permanent magnet motor according to claim 2, characterized in that, A rotating groove (209) is opened at the end of the worm (208), and the cross section of the rotating groove (209) is hexagonal.

4. The pcb printed stator plate for a coreless permanent magnet motor according to claim 1, characterized in that, A set of clamping heads (206) are respectively hinged to the ends of the plurality of groups of rotating arms (203), and a set of rubber blocks are respectively fixedly connected to the side walls of the plurality of groups of clamping heads (206).

5. The pcb printed stator plate for a coreless permanent magnet motor according to claim 1, characterized in that, The connection head (3) includes a female head (301), the female head (301) is fixedly connected to the top end of the plate body (1), a male head (302) is slidably connected to the inner wall of the female head (301), and a wire (303) is fixedly sleeved on the inner wall of the male head (302).

6. The pcb printed stator plate for a coreless permanent magnet motor according to claim 5, characterized in that, Two groups of limiting blocks (304) are rotatably connected to the inner wall of the male head (302), and a set of torsion springs are respectively arranged at the connections of the two groups of limiting blocks (304) with the male head (302).

7. The pcb printed stator plate for a coreless permanent magnet motor according to claim 6, wherein A sliding plate (305) extending into the male head (302) is slidably connected to the side wall of the male head (302), two groups of protrusions (306) located inside the male head (302) are fixedly connected to the end of the sliding plate (305), and the protrusions (306) abut against the side walls of the limiting blocks (304).

8. The PCB printed stator plate for a coreless permanent magnet motor according to claim 6, wherein Two groups of inclined blocks (307) are fixedly connected to the inner wall of the female head (301), and the positions of the two groups of inclined blocks (307) correspond to the limiting blocks (304).

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