CN213959918U - DC torque motor commutator segment and assembly fixture - Google Patents
DC torque motor commutator segment and assembly fixture Download PDFInfo
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- CN213959918U CN213959918U CN202022938916.5U CN202022938916U CN213959918U CN 213959918 U CN213959918 U CN 213959918U CN 202022938916 U CN202022938916 U CN 202022938916U CN 213959918 U CN213959918 U CN 213959918U
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Abstract
The utility model discloses a direct current torque motor commutator segment and assembly fixture belongs to direct current motor technical field. On one hand, the reversing sheet of the utility model is provided with a positioning groove, a welding wire groove and a glue storage groove; and on the other hand, the assembly tool comprises a hoop tool, a slot wedge and an insertion piece tool, and a positioning boss, a slot and a mounting groove are arranged on the hoop tool and used for ensuring the assembly precision of the commutator segments and the uniformity of insulation gaps of the commutator. The utility model discloses utilize the commutator segment and assembly fixture's structural feature to make the commutator segment can directly weld the wire in the bonding wire inslot of commutator segment when the commutator segment assembles the commutator, simple structure, processing convenience, with electric motor rotor's bonding strength height, effectively promoted motor body's production efficiency. In addition, the commutator segments do not occupy the space in the rotor core slot, so that the utilization rate of the space in the slot is effectively improved, and the overall performance of the motor is improved.
Description
Technical Field
The utility model belongs to the technical field of direct current motor, concretely relates to direct current torque motor commutator segment and assembly fixture.
Background
The permanent-magnet DC torque motor is mainly composed of a wire-wound rotor with commutator, a magnetic steel excited stator with multiple pairs of poles and a pair of electric brushes, and its working principle is identical to that of typical DC motor, and the direction of force is determined according to left-hand rule by using the action of electromagnetic force exerted by current-carrying conductor in magnetic field as working principle. The stator provides permanent magnetic field energy, the rotor inputs electric energy, and the brush realizes that the current direction in the conductor keeps consistent under the same polar surface.
The commutator is used as an important component of a torque motor rotor, the structure in the prior art is a traditional integrated annular commutator with a pin, and the commutator is characterized by high coaxiality, good consistency of insulation gaps among commutator segments and convenient fixing and assembling. However, the pin structure occupies the space in the slot of the rotor core, so that the utilization rate of the space in the slot is reduced, and the structure has the advantages of high production and processing difficulty, long period and low survival rate, greatly increases the production cost and is not convenient for mass production.
Disclosure of Invention
The utility model aims at the above-mentioned problem, provide a direct current torque motor commutator segment and assembly fixture, adopt the not slot commutator segment structure of monolithic, solved the virtual high problem of rotor core groove fullness rate, reduction in production cost improves production efficiency simultaneously.
The utility model discloses an aspect provides a direct current torque motor commutator segment, the commutator segment is provided with the constant head tank, is located the outer end of commutator segment, the commutator segment inner end is provided with stores up gluey groove and bonding wire groove, the bonding wire groove is located commutator segment inner end middle part, it is the L type to store up gluey groove, is located commutator segment inner end first.
Furthermore, the commutator segment is of a trapezoidal structure, and the left end face and the right end face of the commutator segment incline to the central plane of the commutator segment by the same angle.
Furthermore, the positioning groove is rectangular, and the depth of the positioning groove does not exceed the difference between the longitudinal thickness and the transverse thickness of the commutator segment.
Furthermore, the welding wire groove is a semi-cylindrical surface.
Further, the glue storage tank is T-shaped.
The utility model discloses an another aspect provides an assembly fixture, above it is used for assembling DC torque motor commutator segment contains hoop frock, slot wedge and inserted sheet frock, the hoop frock is the cyclic annular structure, the inner ring be provided with mounting groove and location boss that the commutator segment corresponds, hoop frock bottom is provided with the installation the slot of inserted sheet frock.
Further, the hoop tool axial length is greater than or equal to the sum of the rotor core axial length and the commutator axial length.
Further, the material of the slot wedge is epoxy glass laminated plate.
Compared with the processing and assembling of the permanent magnet direct current torque motor commutator segment in the prior art, the utility model adopts a single-piece commutator segment structure without contact pins, and has the characteristics of simple commutator segment structure, convenient processing, short molding period and convenient batch production; the structure of the commutator segment improves the space utilization rate in the rotor core slot, and is beneficial to improving the overall performance of the motor; and thirdly, the assembly tool is used for ensuring the assembly precision of the commutator segments and the uniformity of insulating gaps between the segments, and the assembly difficulty of the commutator segments is reduced.
Drawings
FIG. 1 is a schematic view of the commutator segment of the present invention;
FIG. 2 is a top view of the hoop fixture of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view of a slot wedge and tab tooling structure;
fig. 5 is a schematic view of the commutator assembly of the present invention;
in the figure: 1. a commutator segment; 2. a hoop fixture; 3. a slot wedge; 4. inserting a sheet tool; 5. positioning the boss; 6. mounting grooves; 7. positioning a groove; 8. a right end face; 9. a glue storage tank; 10. a wire bonding groove; 11. a left end face; 12. and (4) a slot.
Detailed Description
Embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the middle commutator segment of the present invention includes: the commutator segment comprises a commutator segment substrate, a left end surface 11, a right end surface 8, a positioning groove 7, a welding line groove 10 and a glue storage groove 9. The commutator segment 1 is of a trapezoidal structure, has no arc surface, is simple in structure and is convenient and rapid to form. The left end surface 11 and the right end surface 8 of the commutator segment 1 are inclined to the central plane of the commutator segment 1 at the same angle, and the angle is determined by the size of the insulation gap between the commutator segments 1, so that the uniformity of the insulation gap between the commutator segments after being molded is ensured. The positioning groove 7 is positioned at the outer end of the commutator segment base body, is preferably rectangular and is used for assembling the commutator segment 1 on the hoop tool, and the depth of the positioning groove should not exceed the difference between the longitudinal thickness and the transverse thickness of the commutator segment. After the commutator segment 1 is assembled to form the commutator, the positioning groove 7 is completely removed by turning, and the outer end face of the commutator segment forms an arc surface structure lapped with the carbon brush. The glue storage groove 9 is located at the inner end of the commutator segment base body and used for integral glue filling of the commutator to prevent the commutator from loosening, and a T-shaped groove is preferred. The welding wire grooves 10 are located at the inner end of the commutator segment base body and used for electrically connecting the commutator with the rotor core, and a semi-cylindrical surface is preferred.
As shown in fig. 2, 3 and 4, the embodiment of the assembly fixture of the present invention includes: hoop frock 2, slot wedge 3, inserted sheet frock 4. The hoop tool 2 is of an annular structure, and the inner ring is provided with a mounting groove 6 and a positioning boss 5 which are used for fixing the mounting position of the commutator segment 1. The slot wedges 3 serve for electrical insulation between the segments 1, preferably using epoxy glass laminates. The bottom of the hoop tool 2 is provided with a slot 12 for installing the inserting piece tool 4, and the hoop tool 2 and the rotor core are fixed.
The utility model discloses the commutator segment is when the assembly, firstly with 2 interior circles of hoop frock and rotor core excircle cooperation installations. The slot 12 on the hoop tool 2 is consistent with the width of the iron core notch. The slot notch is aligned with the iron core notch in the assembling process, and the insert piece tool 4 is simultaneously inserted into the two notches to fix the position of the hoop tool 2 and the position of the rotor iron core. Secondly, the positioning groove 7 on the commutator segment 1 is aligned with the positioning boss 5 on the hoop tool 2, the commutator segment 1 is inserted into the hoop tool 2, and all the commutator segments 1 are assembled one by one. Thirdly, slot wedges 3 are inserted between adjacent commutator segments 1 for ensuring the insulation between the commutator segments 1, as shown in fig. 5.
Finally, the wire welding of the motor winding is completed in the wire welding groove 10. The whole encapsulation is completed by adopting epoxy glue, and the T-shaped glue storage groove 9 can effectively prevent the commutator from axially loosening relative to the rotor core. And after the glue is poured, taking out the hoop tool 2 and the inserting piece tool 4. And finely turning the outer end face of the commutator according to the final required size of the motor rotor to form a circular outer contact face lapped by the commutator and the carbon brush.
The embodiments of the present invention are only described in the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and the technical personnel in the field should fall into the protection scope of the present invention for various modifications and improvements made by the technical solution of the present invention without departing from the design idea of the present invention.
Claims (9)
1. The direct-current torque motor commutator segment is characterized in that a positioning groove (7) is formed in the commutator segment (1) and located at the outer end of the commutator segment (1), a glue storage groove (9) and a welding line groove (10) are formed in the inner end of the commutator segment (1), the welding line groove (10) is located in the middle of the inner end of the commutator segment (1), the glue storage groove (9) is L-shaped and located in the upper half of the inner end of the commutator segment (1).
2. The direct-current torque motor commutator segment according to claim 1, wherein the commutator segment (1) is of a trapezoidal structure, and the left end surface (11) and the right end surface (8) of the commutator segment (1) are inclined to the central plane of the commutator segment (1) at the same angle.
3. The direct current torque motor commutator segment according to claim 1, wherein the positioning groove (7) is rectangular.
4. A direct current torque motor commutator segment as claimed in claim 3, characterized in that the depth of the positioning groove (7) does not exceed the difference between the longitudinal thickness and the transverse thickness of the commutator segment (1).
5. The direct current torque motor commutator segment according to claim 1, wherein the weld groove (10) is a semi-cylindrical surface.
6. The direct current torque motor commutator segment according to claim 1, wherein the glue storage groove (9) is T-shaped.
7. An assembly tool is used for assembling the direct-current torque motor commutator segment of claim 1 and is characterized by comprising a hoop tool (2), a slot wedge (3) and an insertion piece tool (4), wherein the hoop tool (2) is of an annular structure, an inner ring of the hoop tool (2) is provided with a mounting groove (6) and a positioning boss (5) corresponding to the commutator segment (1), and a slot (12) for mounting the insertion piece tool (4) is formed in the bottom of the hoop tool (2).
8. The assembly tool according to claim 7, characterized in that the hoop tool (2) has an axial length greater than or equal to the sum of the axial length of the rotor core and the axial length of the commutator.
9. The assembly tooling of claim 7, wherein the slot wedge (3) is an epoxy glass laminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938916.5U CN213959918U (en) | 2020-12-10 | 2020-12-10 | DC torque motor commutator segment and assembly fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022938916.5U CN213959918U (en) | 2020-12-10 | 2020-12-10 | DC torque motor commutator segment and assembly fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213959918U true CN213959918U (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022938916.5U Active CN213959918U (en) | 2020-12-10 | 2020-12-10 | DC torque motor commutator segment and assembly fixture |
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| CN (1) | CN213959918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477869A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
-
2020
- 2020-12-10 CN CN202022938916.5U patent/CN213959918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117477869A (en) * | 2023-12-27 | 2024-01-30 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
| CN117477869B (en) * | 2023-12-27 | 2024-03-22 | 苏州英磁新能源科技有限公司 | DC torque motor commutator and brush assembly |
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