CN218733798U

CN218733798U - Direct-current slotless brushless motor with double-circuit-board Hall adjusting structure

Info

Publication number: CN218733798U
Application number: CN202223151749.5U
Authority: CN
Inventors: 邵焱初; 李涛
Original assignee: Jiangsu Dingzhi Intelligent Control Technology Co ltd
Current assignee: Jiangsu Dingzhi Intelligent Control Technology Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-03-24
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a DC slotless brushless motor with a double-line plate Hall adjusting structure, which comprises a casing, a coil component, a rotor component, a PCB board component, a front cover and a rear cover, wherein the coil component, the rotor component and the PCB board component are positioned in the casing, and the front cover and the rear cover are fixed at the two axial ends of the casing; the PCB assembly comprises a lower support ring fixedly connected with the coil assembly, a lower PCB connected with the lower support ring, an upper support ring fixedly connected with the rear cover and an upper PCB connected with the upper support ring, wherein the lower PCB and the upper PCB are arranged in an aligned mode, a three-phase line of the lower PCB is fixed to the coil assembly in a welded mode, a Hall element is arranged on the upper PCB, and the upper support ring and the lower support ring are attached to the inner peripheral surface of the casing. The utility model discloses a double-deck PCB plate structure, hall element weld alone on last PCB board, and the three-phase line welding of lower PCB board need not to rotate along with hall element's adjustment again on coil pack, goes up that the PCB board is fixed and covers after, does not receive the constraint of coil connecting wire, can rotate the position that the corresponding was look for to the back cover tape-operated hall element at will.

Description

Direct-current slotless brushless motor with double-circuit-board Hall adjusting structure

Technical Field

The utility model relates to a motor design technical field especially relates to a hall structure's direct current slotless brushless motor is transferred to double-circuit board.

Background

The slotless brushless motor is compared with the traditional brushless motor, it has cancelled the tooth's socket on the original stator, the winding method of coil has also had very obvious difference with traditional brushless motor, the hall board of traditional motor can rely on the tooth's socket on the stator to carry out the accurate positioning, but slotless brushless motor carries out the rotation regulation position to the circuit board that has welded hall element because the limitation of coil can only the later stage, make hall element on the circuit board manually find corresponding phase line position, through the clockwise or anticlockwise adjustment to the circuit board, make motor just reversing current reach the balance.

The slotless brushless motor in the prior art adopts that hall element and motor three-phase wiring are integrated on a circuit board, though reduced manufacturing cost like this, but can appear on the motor that low rotational speed required that the three-phase line is bruised by the circuit board, the phenomenon of breaking, the leading cause is because the enameled wire that the motor of low rotational speed used is thinner, relative displacement need take place for the circuit board during adjustment hall element, the three-phase wiring can appear bruising, breaking because of pulling.

SUMMERY OF THE UTILITY MODEL

In order to solve prior art's slotless brushless motor, hall element and motor three-phase wiring are integrated on a circuit board, can appear the technical problem that the three-phase line is bruised, the phenomenon of breaking by the circuit board on the motor that the low rotational speed required, the utility model provides a two-wire board transfers direct current slotless brushless motor of hall structure to solve above-mentioned problem.

The utility model provides a technical scheme that its technical problem adopted is: a direct-current slotless brushless motor with a double-circuit board Hall adjusting structure comprises a shell, a coil assembly, a rotor assembly, a PCB (printed Circuit Board) assembly, a front cover and a rear cover, wherein the coil assembly, the rotor assembly and the PCB assembly are positioned in the shell; the PCB board subassembly includes the lower support ring with coil pack fixed connection, the lower PCB board of being connected with the lower support ring, with back lid fixed connection's last support ring and with last support ring connected last PCB board, lower PCB board and last PCB board are just to arranging, and the three-phase line and the coil pack welded fastening of lower PCB board are equipped with hall element on going up the PCB board, go up the inner peripheral surface laminating of support ring and lower support ring and casing.

Furthermore, go up the PCB board and be equipped with two or more than two spacing holes, go up the spacing post that is suitable for inserting spacing hole on the terminal surface of support ring orientation PCB board.

Furthermore, the axial one end of spacing post is equipped with the boss, the diameter of boss is greater than the diameter of spacing hole to make the boss and the terminal surface butt of last PCB.

Furthermore, the end face of the boss is of a conical structure, and the center height of the end face of the boss is higher than the edge height of the end face of the boss.

Furthermore, the upper support ring is provided with a screw hole which is fixedly connected with the rear cover and is axially communicated with the rear cover.

Furthermore, the upper support ring is provided with a threading hole for the three-phase line to pass through.

Further, the threading holes extend to the inner side and the outer side of the upper supporting ring.

Furthermore, the machine shell, the lower supporting ring and the lower PCB are fixed in an interference fit mode in sequence, and a limiting convex shoulder abutted to the lower end face of the lower PCB is arranged on the inner circumferential surface of the lower supporting ring.

Furthermore, the upper end face of the lower PCB is flush with the upper end face of the lower support ring.

Furthermore, the shell is fixedly connected with the rear cover in a pressing mode.

The utility model has the advantages that:

(1) A brushless motor of direct current slotless of hall structure is transferred to bilinear board, adopt double-deck PCB plate structure, hall element welds on last PCB board alone, the three-phase line welding of lower PCB board need not to rotate along with hall element's adjustment again on coil pack, goes up the PCB board and fixes on covering after, consequently does not receive coil connecting wire's constraint, can rotate the position that the hou mian moved hall element and seeks to correspond at will.

(2) A double-circuit board transfers direct current slotless brushless motor of hall structure, install PCB board and lower PCB board through last supporting ring and the under bracing ring with the laminating of casing inner peripheral surface respectively, the position of PCB board and lower PCB board on can the fast rotation adjustment improves the installation effectiveness, guarantees the axiality of motor.

(3) The utility model discloses well under bracing ring passes through spacing post and spacing jogged joint with lower PCB board to it is spacing, the dismouting of being convenient for through the boss axial of spacing post head end.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a front view of an embodiment of a dc slotless brushless motor with a dual-circuit board hall adjusting structure according to the present invention;

FIG. 2 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

FIG. 3 is a sectional view taken along line B-B of FIG. 2;

FIG. 4 is an enlarged view taken at a in FIG. 2;

fig. 5 is a perspective view of the upper support ring of the present invention;

fig. 6 is a front view of the upper support ring of the present invention;

FIG. 7 is a sectional view taken along line C-C of FIG. 6;

fig. 8 is a perspective view of the middle and lower support ring of the present invention.

In the figure, 1, a machine shell, 2, a coil assembly, 3, a Hall element, 4, a PCB plate assembly, 401, a lower support ring, 4011, a limiting shoulder, 402, a lower PCB plate, 403, an upper PCB plate, 4031, a limiting hole, 404, an upper support ring, 4041, a limiting column, 4042, a boss, 4043, a screw hole, 4044, a threading hole, 5, a front cover, 6, a rear cover, 7 and a rotor assembly.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-4, a dc slotless brushless motor with a dual-circuit board hall structure comprises a casing 1, a coil assembly 2 located in the casing 1, a rotor assembly 7, a PCB assembly 4, and a front cover 5 and a rear cover 6 fixed at two axial ends of the casing 1; coil pack 2 is located the periphery of rotor subassembly 7, rotor subassembly 7 rotates with casing 1 to be connected, PCB board subassembly 4 includes lower support ring 401 with coil pack 2 fixed connection, lower PCB board 402 of being connected with lower support ring 401, last support ring 404 with back lid 6 fixed connection and the last PCB board 403 of being connected with last support ring 404, lower PCB board 402 is just to arranging with last PCB board 403, the three-phase line and the coil pack 2 welded fastening of lower PCB board 402, be equipped with hall element 3 on going up PCB board 403, go up support ring 404 and the laminating of lower support ring 401 and the inner peripheral surface of casing 1. The casing 1 and the rear cover 6 are usually fixed by pressing, and the rear cover 6 can be rotated to any angle to be fixed with the casing 1.

The utility model discloses use in the motor towards the direction of protecgulum 5 down, the direction of lid 6 is last after towards.

The upper PCB 403 is used for installing the Hall element 3, the lower PCB 402 is used as a driving circuit board, when the Hall element 3 is assembled, the rear cover 6 (the rear cover 6, the upper PCB 403 and the Hall element 3 move synchronously) is rotated to adjust the angle of the Hall element 3, then the rear cover 6 is fixedly connected with the casing 1, the rotation of the upper PCB 403 is not influenced by the connecting line on the coil assembly 2, and the problem that the connecting line is easy to break is not required to be considered.

According to the setting position of the lead, the diameter of the upper PCB 403 is larger than that of the lower PCB 402, therefore, the lower PCB 402 can be arranged on the inner side of the lower support ring 401, the upper PCB and the lower PCB can be fixed through interference fit, due to the restriction of the inner space of the motor, the outer diameter of the upper PCB 403 is slightly smaller than the inner diameter of the casing 1, the upper PCB 403 is preferably arranged below the upper support ring 404, the upper PCB and the lower PCB can be connected and fixed through end faces, the upper support ring 404 and the lower support ring 401 are used as an intermediate connecting piece for installing the upper PCB 403 and the lower PCB 402, on the other hand, the upper support ring 404 and the lower support ring 401 can be attached to the inner circumferential surface of the casing 1, so that the upper PCB 403 and the lower PCB 402 can rotate around a central shaft to adjust the position, the coaxiality of the motor is ensured, and the installation efficiency is improved.

Mounting of the upper PCB 403:

as shown in fig. 3 and 5 to 7, the upper PCB 403 is provided with two or more than two limiting holes 4031, the end surface of the upper support ring 404 facing the upper PCB 403 is provided with a limiting post 4041 adapted to be inserted into the limiting hole 4031, the limiting post 4041 and the limiting hole 4031 may circumferentially fix the upper PCB 403 and the upper support ring 404, and the upper PCB 403 and the upper support ring 404 may be axially fixed by interference fit, axial limiting, or other structures of the limiting post 4041 and the limiting hole 4031. The utility model discloses an among the preferred embodiment, the axial one end of spacing post 4041 is equipped with boss 4042, and boss 4042's diameter is greater than the diameter of spacing hole 4031 to make boss 4042 and last PCB's terminal surface butt. When the upper PCB 403 is mounted, the upper PCB 403 is stressed to penetrate through the boss 4042, so that the diameter of the boss 4042 cannot be too large, after mounting is completed, the limiting hole 4031 is located on the periphery of the limiting column 4041, the boss 4042 abuts against the lower end of the limiting hole 4031, and the boss 4042 can play a role in axial limiting. To facilitate the assembly of the upper PCB 403, the end surface of the protruding platform 4042 is preferably tapered, and the center height of the end surface of the protruding platform 4042 is higher than the edge height of the end surface of the protruding platform 4042, so that the upper PCB 403 can smoothly pass through the protruding platform 4042 by the slope surface of the lower end surface of the protruding platform 4042.

The upper support ring 404 and the rear cover 6 can be fixed by screws, and as shown in fig. 5, the upper support ring 404 has screw holes 4043 fixedly connected to the rear cover 6 and axially penetrating therethrough.

Since the three-phase wires welded and fixed to the coil block 2 need to be led out from the rear cover 6, it is preferable that the upper support ring 404 has a wire passing hole 4044 through which the three-phase wires pass. The threading holes 4044 may be hole-like structures, and for quick threading, the threading holes 4044 preferably extend to the inner and outer sides of the upper support ring 404, i.e., notches are provided on the upper support ring 404.

Mounting of the lower PCB 402:

the casing 1, the lower support ring 401 and the lower PCB 402 are fixed in an interference fit manner in sequence, and the inner circumferential surface of the lower support ring 401 is provided with a limiting shoulder 4011 abutted against the lower end surface of the lower PCB 402. As shown in fig. 4 and 8, the inner circumferential surface of the lower support ring 401 is formed with a mounting groove from the upper end to the middle to form a limiting shoulder 4011, the lower PCB 402 is mounted in the mounting groove, and the upper end surface of the lower PCB 402 is preferably flush with the upper end surface of the lower support ring 401, so that the appearance is beautiful, and the lower PCB 402 is also protected to a certain extent.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "inner", "outer", "axial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In this specification, the schematic representations of the terms are not necessarily referring to the same embodiment. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a direct current of hall structure is transferred to double-circuit board does not have groove brushless motor which characterized in that: the motor comprises a machine shell (1), a coil assembly (2) positioned in the machine shell (1), a rotor assembly (7), a PCB assembly (4), a front cover (5) and a rear cover (6) which are fixed at two axial ends of the machine shell (1);

PCB board subassembly (4) include with coil pack (2) fixed connection's lower support ring (401), with lower PCB board (402) that lower support ring (401) is connected, with back lid (6) fixed connection's last support ring (404) and with last support ring (404) last PCB board (403) be connected, PCB board (402) is just to arranging with last PCB board (403) down, and the three-phase line and coil pack (2) welded fastening of lower PCB board (402) are equipped with hall element (3) on going up PCB board (403), go up support ring (404) and lower support ring (401) and the inner peripheral surface laminating of casing (1).

2. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the upper PCB (403) is positioned below the upper support ring (404), the upper PCB (403) is provided with two or more than two limiting holes (4031), and the end face, facing the upper PCB (403), of the upper support ring (404) is provided with a limiting column (4041) suitable for being inserted into the limiting hole (4031).

3. The direct-current slotless brushless motor with the two-wire plate hall structure according to claim 2, characterized in that: the axial one end of spacing post (4041) is equipped with boss (4042), the diameter of boss (4042) is greater than the diameter of spacing hole (4031) to make boss (4042) and the terminal surface butt of last PCB.

4. The direct-current slotless brushless motor with the double-circuit board Hall structure according to claim 3, characterized in that: the end face of the boss (4042) is of a conical structure, and the center height of the end face of the boss (4042) is higher than the edge height of the end face of the boss (4042).

5. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the upper supporting ring (404) is provided with a screw hole (4043) which is fixedly connected with the rear cover (6) and penetrates through the rear cover in the axial direction.

6. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the upper support ring (404) is provided with a threading hole (4044) through which the three-phase line passes.

7. The direct-current slotless brushless motor with the two-wire board Hall structure according to claim 6, wherein: the threading holes (4044) extend to the inside and outside of the upper support ring (404).

8. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the casing (1), the lower support ring (401) and the lower PCB (402) are fixed in a sequentially interference fit mode, and the inner circumferential surface of the lower support ring (401) is provided with a limiting convex shoulder (4011) abutted to the lower end surface of the lower PCB (402).

9. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the upper end face of the lower PCB (402) is flush with the upper end face of the lower support ring (401).

10. The direct-current slotless brushless motor of a two-wire plate hall structure according to claim 1, characterized in that: the shell (1) and the rear cover (6) are fixed in a compression joint mode.