Novel coreless motor structure
By using the design of annular bosses and protruding clips, combined with a detachable front cover, the problem of loosening of the rear cover of the hollow cup motor is solved, thus achieving maintainability and extending the service life of the equipment.
Patent Information
- Application Number
- CN202520170070.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-24
AI Technical Summary
The rear cover of traditional coreless motors is prone to loosening, which can lead to equipment damage that cannot be repaired and results in high operating costs.
The axial displacement of the rear end cover is limited by the combination of an annular boss and an annular groove, the rotational displacement is limited by the outward protruding clamp, and the front end cover is designed to be detachable by screws, replacing welding installation.
It effectively prevents the rear cover from loosening, extends the service life of the equipment, facilitates maintenance, and reduces operating costs.
Smart Images
Figure CN223872114U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hollow cup motor technical field especially relates to a novel hollow cup motor structure. BACKGROUND
[0002] Hollow cup motor belongs to DC permanent magnet servo, control motor, has outstanding energy saving characteristic, sensitive convenient control characteristic and stable motion characteristic, as high efficiency energy conversion device, is widely used in over technical field. Traditional hollow cup motor is composed of shell, front end cover, rear end cover and rotor winding, and the front end cover and the rear end cover are fixed on the shell by welding or glue sticking, and the shell cannot be normally opened after production and assembly, and the internal parts cannot be repaired, so the hollow cup motor is a disposable product, and the use cost is high. SUMMARY
[0003] The utility model provides a kind of rear end cover reinforcing structure, with front end cover detachable function, effectively improve equipment service life and facilitate maintenance, to solve the technical problems of the high-speed ground single bearing easy to damage and inconvenient to replace bearing.
[0004] The utility model employs the technical scheme that the utility model includes shell, shaft, magnetic steel, winding and punching piece assembly are sequentially arranged from inside to outside on the shaft coaxially arranged in the shell, front end cover and rear end cover are further arranged at the front and rear ends of the shell, bearing adapted to the shaft is arranged in the front end cover and the rear end cover, annular boss is arranged on the outer circumferential wall of the rear end cover, annular groove is arranged on the inner side wall of the shell corresponding to the rear end cover side, in assembly state, the annular boss is embedded in the annular groove, the axial displacement of the rear end cover is limited, a plurality of screw holes are arranged around the bottom of the shell corresponding to the front end cover side, and the front end cover is detachably mounted on the shell by screwing the screw holes.
[0005] Further, a plurality of outer convex clamping pieces are further arranged on the outer circumferential wall of the rear end cover, a plurality of positioning notches corresponding to the outer convex clamping pieces are arranged on the upper end of the shell corresponding to the rear end cover side, in assembly state, the outer convex clamping pieces are inserted into the positioning notches, the displacement of the rotation direction of the rear end cover is limited, and the outer convex clamping pieces are perpendicular to the annular boss.
[0006] Further, the front end cover and the rear end cover are provided with bearing chambers matched with the bearings, and the rear end cover is further provided with a silica gel pad placing groove coaxially outside the bearing chamber.
[0007] Further, the front end cover is provided with mounting holes around the outer periphery of the bearing chamber, the number of the mounting holes being matched with the threaded holes, and the casing is provided with a through hole matched with the outer circle of the bearing chamber at the bottom of the side end of the casing corresponding to the front end cover.
[0008] Finally, the front end cover is provided with a plurality of external screw holes around the outer periphery of the bearing chamber, and the external screw holes are arranged alternately with the mounting holes.
[0009] Compared with the prior art, the utility model has the beneficial effects that: the annular boss arranged on the outer periphery of the rear end cover cooperates with the annular groove arranged on the inner side wall of the casing, so that the axial displacement of the rear end cover in the subsequent use process is limited, the assembly between the external convex clamping piece and the positioning notch limits the displacement of the rear end cover in the direction of rotation, effectively prevents the rear end cover from shaking or even loosening due to the rotation of the rotating shaft and the vibration of the motor, and effectively prolongs the service life of the hollow cup motor; the front end cover is fixedly installed on the casing through the screw thread matched assembly mode, so that the traditional welding installation mode is replaced, the detachable assembly between the front end cover and the casing is realized, and the inspection and maintenance of the internal parts of the hollow cup motor are facilitated. BRIEF DESCRIPTION OF DRAWINGS
[0010] Figure 1 is the overall structure of the utility model;
[0011] Figure 2 is the explosion structure of the utility model;
[0012] Figure 3 is the shaft side structure of the casing;
[0013] Figure 4 is the structure of the rear end cover;
[0014] Figure 5 is the lateral structure of the front end cover. DETAILED DESCRIPTION
[0015] As Figures 1 to 5As shown, the utility model is including casing 1, coaxial setting in the casing 1's pivot 2, the magnetic steel 3 that is arranged from inside to outside in turn with the pivot 2 on, winding 4 and the punching piece assembly 5, still be provided with front end cap 7 and rear end cap 8 at the both ends of casing 1 respectively, the front end cap 7 and the rear end cap 8 all are provided with the bearing 6 that is adapted with the pivot 2 in, the outer circumferential wall of rear end cap 8 is provided with annular boss 9, is provided with annular groove 10 on the inner side wall of the one side of casing 1 corresponding rear end cap 8, under the assembly state, annular boss 9 is embedded in annular groove 10, limits the axial displacement of rear end cap 8, the end bottom of the one side of casing 1 corresponding front end cap 7 is provided with a plurality of threaded holes 11, and the front end cap 7 is detachably installed on the casing 1 by the way that screw is adapted with threaded hole 11.
[0016] In the utility model, the outer circumferential wall of rear end cap 8 is still provided with a plurality of outer convex clamping pieces 12, the one side end of casing 1 corresponding rear end cap 8 is provided with the positioning gap 13 of the number consistent with outer convex clamping piece 12, under the assembly state, outer convex clamping piece 12 is inserted into positioning gap 13, limits the displacement of the rotating direction of rear end cap 8, and outer convex clamping piece 12 is perpendicular to annular boss 9. The inner side end of front end cap 7 and rear end cap 8 is provided with the bearing chamber 14 that is adapted with bearing 6, and on rear end cap 8, the outer side of bearing chamber 14 is still coaxially provided with silica gel pad placing groove 15. Bearing 6 is placed in bearing chamber 14, and is provided with O-ring between the outer side of bearing 6 and the inner side wall of bearing chamber 14;Silica gel pad is placed in silica gel pad placing groove 15, to prevent PCB board and rear end cap 8 contact short circuit, and the coil lead wire of winding 4 is welded on PCB board and then is guided out with power cord. On front end cap 7, the outer circumferential side of bearing chamber 14 is provided with the mounting hole 16 of the number adapted with threaded hole 11, and the bottom of the one side end of casing 1 corresponding front end cap 7 is provided with the through hole 17 adapted with the outer circle of bearing chamber 14, under the assembly state, the outer circle of bearing chamber 14 provided on front end cap 7 is inserted into through hole 17. The outer circumferential side of bearing chamber 14 on front end cap 7 is provided with a plurality of outer screw holes 18, and a plurality of outer screw holes 18 are arranged with mounting hole 16.
[0017] In the utility model, the annular boss 9, the outer convex clamping piece 12, the bearing chamber 14, the silica gel pad placing groove 15 and the rear end cover 8 are integrally formed, the annular groove 10 and the positioning notch 13 are integrally formed with the shell 1, coaxial assembling bearing chambers matched with the bearing 2 are arranged on the front end cover 7 and the rear end cover 8; the annular boss 9 arranged on the outer circumferential side of the rear end cover 8 cooperates with the annular groove 10 arranged on the inner side wall of the shell 1, restricts the axial displacement of the rear end cover 8 in the subsequent use process, the assembling between the outer convex clamping piece 12 and the positioning notch 13 restricts the displacement of the rear end cover 8 in the direction of rotation, the rear end cover 8 and the corresponding position on the inner side of the shell 1 are coated with structural glue for reinforcement and sealing, effectively prevent the rear end cover 8 from shaking or even loosening due to the rotation of the rotating shaft 2 and the vibration of the motor, effectively prolong the service life of the hollow cup motor; the front end cover 7 is fixedly installed on the shell 1 through the screw thread matched assembling mode, replaces the traditional welding and riveting installation mode, realizes the detachable assembling between the front end cover 7 and the shell 1, and is convenient for the subsequent inspection and maintenance of the internal parts of the hollow cup motor.
[0018] Finally, it needs to be emphasized that the above is only the preferred embodiment of the utility model, and is not used for limiting the utility model. For the person skilled in the art, the utility model can have various changes and alterations, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A novel hollow cup motor structure, comprising a housing (1), a rotating shaft (2) coaxially disposed within the housing (1), a magnet (3) arranged in a cylindrical shape from the inside to the outside on the rotating shaft (2), a winding (4), and a lamination assembly (5), wherein a front end cover (7) and a rear end cover (8) are respectively disposed at the front and rear ends of the housing (1), and a bearing (6) adapted to the rotating shaft (2) is disposed in both the front end cover (7) and the rear end cover (8), characterized in that: An annular boss (9) is provided on the outer peripheral side wall of the rear end cover (8), and an annular groove (10) is provided on the inner side wall of the housing (1) corresponding to the rear end cover (8). In the assembled state, the annular boss (9) is embedded in the annular groove (10) to restrict the axial displacement of the rear end cover (8). The bottom of the housing (1) corresponding to the front end cover (7) is provided with several threaded holes (11). The front end cover (7) can be detachably installed on the housing (1) by means of screws that are adapted to the threaded holes (11).
2. The novel hollow cup motor structure according to claim 1, characterized in that: The outer peripheral wall of the rear end cover (8) is also provided with a number of protruding clips (12). The housing (1) is provided with a number of positioning notches (13) on one side of the rear end cover (8) that are consistent with the number of protruding clips (12). In the assembled state, the protruding clips (12) are inserted into the positioning notches (13) to restrict the displacement of the rear end cover (8) in the rotation direction. The protruding clips (12) are perpendicular to the annular boss (9).
3. The novel hollow cup motor structure according to claim 2, characterized in that: Both the front end cover (7) and the rear end cover (8) are provided with bearing chambers (14) that are adapted to the bearing (6). On the rear end cover (8), a silicone pad placement groove (15) is also coaxially provided on the outer side of the bearing chamber (14).
4. The novel hollow cup motor structure according to claim 3, characterized in that: On the front cover (7), the bearing chamber (14) is provided with a number of mounting holes (16) on its outer periphery that match the number of threaded holes (11). The housing (1) is provided with a through hole (17) at the bottom of one side of the front cover (7) that matches the outer circle of the bearing chamber (14). In the assembled state, the outer circle of the bearing chamber (14) on the front cover (7) is inserted into the through hole (17).
5. The novel hollow cup motor structure according to claim 4, characterized in that: The bearing chamber (14) on the front end cover (7) has a plurality of external screw holes (18) on its outer circumference, and the plurality of external screw holes (18) are arranged alternately with the mounting holes (16).