CN219419790U - Combined commutator - Google Patents

Abstract

The utility model discloses a combined commutator, which comprises an upper bracket, a lower bracket and N pieces of commutator copper sheets, wherein N upper copper sheet clamping grooves are formed in the outer side of the upper bracket, N lower copper sheet clamping grooves which are distributed according to an annular array are formed in the outer side of the lower bracket, the upper and lower parts of the commutator copper sheets are respectively clamped into the upper copper sheet clamping grooves and the lower copper sheet clamping grooves, the upper bracket is connected with the lower bracket through round-head half-tooth screws, and welding wire hooks which are bent towards the centrifugal direction of the commutator copper sheets are arranged at the top end of the commutator copper sheets. The beneficial effects are that: the combined installation of the commutators is realized, and when any copper sheet or upper bracket or lower bracket of the commutators is damaged, only damaged parts can be replaced, so that the maintenance cost is reduced and the waste is reduced.

Description

Combined commutator

Technical Field

The utility model relates to the field of commutators, in particular to a combined type commutator.

Background

Commutators are an important component of dc and ac commutator motor armatures. The main structure is that a plurality of commutator copper sheets are arranged on a commutator support, each commutator copper sheet is connected with a plurality of armature winding elements, and when the armature rotates, the commutator copper sheets are sequentially contacted with a fixed electric brush. In a direct current motor, alternating current in an armature winding is changed into direct current between brushes through brushes and a commutator; in an AC commutator motor, the frequency of AC power between brushes is made to meet the operating requirements.

Most of the existing commutators are of an integrated structure, namely, copper sheets of the commutators are fixed on the outer side of a commutator support, once damaged, the whole commutators need to be replaced, and particularly, the copper sheets of the commutators are easy to abrade due to friction with electric brushes. The existing combined commutator has the problems that the copper sheet of the commutator is easy to loosen and the installation process is troublesome.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art and provide a combined commutator.

In order to achieve the technical purpose and the technical effect, the utility model is realized by the following technical scheme:

the utility model provides a combination formula commutator, includes annular upper bracket, annular lower carriage, N piece cross section be convex commutator copper sheet, the outside of upper bracket is provided with N according to the last copper sheet draw-in groove of annular array arrangement, the outside of lower carriage is provided with N according to the lower copper sheet draw-in groove of annular array arrangement, upper and lower two parts of commutator copper sheet block respectively go into in copper sheet draw-in groove and the lower copper sheet draw-in groove, the upper bracket is half tooth screw connection with the lower carriage with the button head, the top of commutator copper sheet is equipped with the curved crotch of the centrifugal direction to the commutator copper sheet.

The commutator comprises an upper support, a lower support, a commutator copper sheet, an upper support and a lower support, wherein the center of the centripetal side of the commutator copper sheet is fixedly connected with a vertical rib plate, N upper rib plate accommodating grooves communicated with the upper copper sheet clamping grooves are formed in the upper support, N lower rib plate accommodating grooves communicated with the lower copper sheet clamping grooves are formed in the lower support, and the upper portion and the lower portion of the rib plate are respectively inserted into the upper rib plate accommodating grooves and the lower rib plate accommodating grooves.

The rib plate is provided with a plurality of pairs of steps which are vertically symmetrical, each step is fixedly connected with a limiting lug which protrudes upwards or downwards, an upper limiting groove for hooking the limiting lug is arranged in the upper bracket, and a lower limiting groove for hooking the limiting lug is arranged in the lower bracket.

The beneficial effects of the utility model are as follows: the upper bracket and the lower bracket are connected by using the round-head half-thread screw, so that the commutator copper sheets are fixed in the upper copper sheet clamping groove and the lower copper sheet clamping groove, the commutator is assembled, and any commutator copper sheet or upper bracket and lower bracket can be replaced only when damaged, thereby reducing maintenance cost and reducing waste; through setting up gusset and spacing lug in the centripetal side of commutator copper sheet, set up gusset holding tank and last spacing groove in the upper bracket, set up gusset holding tank and lower spacing groove in the lower carriage, utilize the gusset to improve commutator copper sheet length direction's rigidity, utilize spacing lug and last spacing groove, lower spacing groove cooperation to make the commutator copper sheet by upper bracket and the stable hook of lower carriage to avoid the commutator copper sheet to take place not hard up in the course of the work.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic perspective view of a commutator according to the present utility model;

FIG. 2 is a schematic view of the vertical structure of the upper bracket after being cut longitudinally;

FIG. 3 is a schematic view of a longitudinal cut perspective of a lower bracket according to the present utility model;

FIG. 4 is a schematic view of the structure of the commutator copper sheet at a first view angle in the present utility model;

fig. 5 is a schematic structural view of a second view of the copper sheets of the commutator according to the present utility model.

The reference numerals in the figures illustrate: the commutator comprises an upper bracket 1, a lower bracket 2, a commutator copper sheet 3, an upper copper sheet clamping groove 4, a lower copper sheet clamping groove 5, round head half-thread screws 6, welding wire hooks 7, rib plates 8, an upper rib plate accommodating groove 9, a lower rib plate accommodating groove 10, a step 11, a limit lug 12, an upper limit groove 13, a lower limit groove 14, an upper end face 15, an upper support face 16, a lower end face 17, a lower support face 18 and a plane 19.

Detailed Description

The utility model will be described in detail below with reference to the drawings in combination with embodiments.

As shown in fig. 1 to 5, a combined commutator comprises an annular upper support 1, an annular lower support 2 and 24 commutator copper sheets 3 with circular arc-shaped cross sections, wherein 24 upper copper sheet clamping grooves 4 distributed according to an annular array are formed in the outer side of the upper support 1, 24 lower copper sheet clamping grooves 5 distributed according to an annular array are formed in the outer side of the lower support 2, the upper and lower parts of the commutator copper sheets 3 are respectively clamped into the upper copper sheet clamping grooves 4 and the lower copper sheet clamping grooves 5, the upper support 1 is connected with the lower support 2 through round-head half-tooth screws 6, and welding wire hooks 7 bent towards the centrifugal direction of the commutator copper sheets 3 are arranged at the top ends of the commutator copper sheets 3. The combined installation of the commutators is realized, and when any copper sheet or upper bracket or lower bracket of the commutators is damaged, only damaged parts can be replaced, so that the maintenance cost is reduced and the waste is reduced.

The center of the centripetal side of the commutator copper sheet 3 is fixedly connected with a vertical rib plate 8, 24 upper rib plate accommodating grooves 9 communicated with the upper copper sheet clamping grooves 4 are formed in the upper support 1, 24 lower rib plate accommodating grooves 10 communicated with the lower copper sheet clamping grooves 5 are formed in the lower support 2, and the upper part and the lower part of the rib plate 8 are respectively inserted into the upper rib plate accommodating grooves 9 and the lower rib plate accommodating grooves 10, so that the rigidity of the commutator copper sheet in the length direction is improved by the rib plates.

The rib plate 8 is provided with a plurality of pairs of steps 11 which are vertically symmetrical, each step 11 is fixedly connected with a limiting lug 12 which protrudes upwards or downwards, an upper limiting groove 13 for hooking the limiting lug 12 is arranged in the upper bracket 1, a lower limiting groove 14 for hooking the limiting lug 12 is arranged in the lower bracket 2, and the commutator copper sheet is stably hooked by the upper bracket and the lower bracket by utilizing the cooperation of the limiting lug and the upper limiting groove and the lower limiting groove, so that the commutator copper sheet is prevented from loosening in the working process.

The top end of the commutator copper sheet 3 is an inclined upper end surface 15 which is inclined downwards from the centripetal side to the centrifugal side, and the top end of the upper copper sheet clamping groove 4 is an inclined upper supporting surface 16 which is inclined downwards from the centripetal side to the centrifugal side; the bottom end of the commutator copper 3 is a lower end face 17 inclined upwards from the centripetal side to the centrifugal side, and the bottom end of the lower copper clamping groove 5 is a lower supporting face 18 inclined upwards from the centripetal side to the centrifugal side. When the commutator copper sheet 3 is installed in the upper copper sheet clamping groove 4 and the lower copper sheet clamping groove 5, the upper end face 15 at the top end of the commutator copper sheet 3 is abutted with the upper supporting face 16 at the top end of the upper copper sheet clamping groove 4, the lower end face 17 at the bottom end of the commutator copper sheet 3 is abutted with the lower supporting face 18 at the bottom end of the lower copper sheet clamping groove 5, and the upper and lower ends of the commutator copper sheet 3 can be prevented from bending towards the centrifugal direction.

The left side and the right side of the commutator copper sheet 3 are mutually parallel planes 19. The centrifugal side of the commutator copper sheet 3 is positioned on the same cylindrical surface with the outer surface of the upper bracket 1 and the outer surface of the lower bracket 2.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (6)

1. A combination commutator, characterized in that: including annular upper bracket, annular lower carriage, N piece cross section be convex commutator copper sheet, the outside of upper bracket is provided with N according to the last copper sheet draw-in groove of annular array arrangement, the outside of lower carriage is provided with N according to the lower copper sheet draw-in groove of annular array arrangement, upper and lower two parts of commutator copper sheet block into respectively in copper sheet draw-in groove and the lower copper sheet draw-in groove, upper bracket and lower carriage are with the half tooth screw connection of button head, the top of commutator copper sheet is equipped with the bonding wire crotch that bends to the centrifugal direction of commutator copper sheet.

2. The modular commutator of claim 1, in which: the commutator copper sheet centripetal side center rigid coupling has a vertical gusset, be equipped with N on the upper bracket with last gusset holding tank of last copper sheet draw-in groove intercommunication, be equipped with N on the lower carriage with lower gusset holding tank of lower copper sheet draw-in groove intercommunication, upper and lower two parts of gusset insert respectively in last gusset holding tank and the lower gusset holding tank.

3. The modular commutator of claim 2, in which: the rib plate is provided with a plurality of pairs of steps which are vertically symmetrical, each step is fixedly connected with a limiting lug which protrudes upwards or downwards, an upper limiting groove for hooking the limiting lug is arranged in the upper bracket, and a lower limiting groove for hooking the limiting lug is arranged in the lower bracket.

4. The modular commutator of claim 1, in which: the top end of the commutator copper sheet is an inclined upper end surface which is inclined downwards from the centripetal side to the centrifugal side, and the top end of the upper copper sheet clamping groove is an inclined upper supporting surface which is inclined downwards from the centripetal side to the centrifugal side; the bottom end of the commutator copper sheet is a lower end face inclined upwards from the centripetal side to the centrifugal side, and the bottom end of the lower copper sheet clamping groove is a lower supporting face inclined upwards from the centripetal side to the centrifugal side.

5. The modular commutator of claim 1, in which: the left side and the right side of the commutator copper sheet are planes which are parallel to each other.

6. The modular commutator of claim 1, in which: the centrifugal side of the commutator copper sheet, the outer surface of the upper bracket and the outer surface of the lower bracket are positioned on the same cylindrical surface.