CN114284817A

CN114284817A - Commutator segment ring structure without mica sheet

Info

Publication number: CN114284817A
Application number: CN202111622344.2A
Authority: CN
Inventors: 张连春
Original assignee: Anhui General Magnet Co ltd
Current assignee: Anhui General Magnet Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-05

Abstract

The invention discloses a commutator segment ring structure without mica segments, which comprises a segment ring formed by encircling a plurality of commutator segments, wherein the opposite side surfaces of adjacent commutator segments are partially contacted to form gaps, and fillers are respectively injected into the gaps and adhere to the adjacent commutator segments. The invention simplifies the production process and saves the raw material cost, and the molded and pressed product avoids the problem of tight or loose sheets and improves the product quality.

Description

Commutator segment ring structure without mica sheet

Technical Field

The invention relates to the field of motor commutators, in particular to a commutator segment ring structure without a mica sheet.

Background

The commutator is an important part of the motor and plays a role in hoop when the motor rotates. The commutator is a commutator segment ring structure formed by a plurality of commutator segments in a circle shape, and during actual production, the commutator segments are firstly arranged to be organized into a segment ring, and then the segment ring is guided into a hole of a middle sleeve plate ring of a compression molding die for molding.

In the old commutator segment ring, a plurality of commutator segments are closely and circularly arranged, the side surface of each commutator segment can be completely and closely contacted with the corresponding side surface of the adjacent commutator segment, and the segment ring formed by the commutator segments is completely closed. The problem of tight or loose plate is existed when the old commutator segment ring is led into the middle sleeve plate ring. When the sheets are tightly pressed, the circle of the sheet ring is larger than that of the middle sleeve plate ring of the die, and when the sheet ring is pressed into the middle sleeve plate ring, the sheets are extruded into the middle sleeve plate ring of the die, so that the sheets are mutually and firmly collided and extruded to deform under the action of force; when the sheet is loose, the circle of the sheet ring is smaller than that of the sleeve plate ring in the die, when the sheet ring is pressed into the sleeve plate ring in the die, a moving clearance space exists between the sheet and the sheet in the sleeve plate ring in the die, and the sheet inclination problem that the joint between the single sheet is not vertical exists in a finished product after final forming.

In order to solve the problem of tight or loose sheets existing in the old commutator segment ring, the prior art adopts a mode of additionally arranging mica sheets, in the sheet arranging process of production, the mica sheets are respectively added between adjacent commutator segments, the mica sheets with different thicknesses are added between different adjacent commutator segments according to the thickness of the mica sheets, and finally, the mica sheets are added for adjustment, so that the size of the sheet ring is matched with the circle of the middle sleeve plate ring. The commutator segment ring in the prior art is shown in fig. 1 and 2, and comprises a plurality of commutator segments 1 arranged in a circle, two side surfaces of each commutator segment 1 are respectively formed into a plane, and mica sheets 2 are clamped between adjacent commutator segments 1 through opposite side surfaces. And during subsequent groove milling processing of the groove milling machine, identifying the mica sheets by the photoelectric induction identifier, and performing groove milling processing according to the positions of the mica sheets by a blade of the groove milling machine. The commutator segment ring with mica sheets added in the prior art can solve the problems of sheet tightness and sheet looseness, but needs to manually select the mica sheets with proper thickness and then manually clamp the mica sheets between adjacent commutator segments when the commutator segments are arranged, so that the production efficiency is undoubtedly reduced, and the selection and assembly of the mica sheets are difficult to realize automatic production, so that the production cost cannot be reduced.

Disclosure of Invention

The invention aims to provide a mica sheet-free commutator segment ring structure, which aims to solve the problems of low production efficiency and difficulty in automatic production of a commutator segment ring adjusted by mica sheets in the prior art.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a commutator segment ring structure without mica segments comprises a segment ring formed by a plurality of commutator segments in a circle, wherein opposite side surfaces of adjacent commutator segments are partially contacted, so that gaps are respectively formed at parts extending to the outer ring position of the segment ring between the adjacent commutator segments, and fillers are respectively injected into the gaps in the segment ring and adhere to the adjacent commutator segments.

Furthermore, one side of each commutator segment in the same clockwise or counterclockwise direction is provided with a notch, the notch of each commutator segment is communicated with the gap between the adjacent commutator segments in the same direction of the notch,

furthermore, the side surfaces of each commutator segment are respectively set to be arc surfaces, so that the partial contact between the opposite side surfaces of the adjacent commutator segments is linear contact.

Furthermore, the side surfaces of each commutator segment are respectively provided with a bending surface which is bent, so that the partial contact between the opposite side surfaces of the adjacent commutator segments is line contact or partial surface contact.

Further, the filler is bakelite powder.

In the invention, the opposite side surfaces of the adjacent reversing sheets are partially contacted, and the contact can be realized by arranging the two side surfaces of the reversing sheets as arc surfaces, bent surfaces and the like, so that a gap is formed between the adjacent reversing sheets and the part extending to the outer ring of the sheet ring, the filler is injected into the gap, the adjacent reversing sheets are adhered by the filler, and the adjustment of the tightness and looseness of the sheets between the adjacent reversing sheets is realized. Because the invention realizes the adjustment of the sheet tightness and the sheet looseness by injecting the filling material, the filling material can be injected automatically in one time after the commutator segments are organized into the sheet rings, manual participation is not needed, and the amount of the injected filling material can be determined according to the actual shape of the side surfaces of the commutator segments and the sheet tightness requirement, thereby realizing the automatic production.

In the invention, the opposite side surfaces of the adjacent commutator segments are partially contacted, so that the contact area between the adjacent commutator segments is reduced as much as possible, and the deformation degree caused by mutual extrusion of the adjacent commutator segments can be reduced.

In addition, because the gaps are formed between the adjacent commutator segments at the outer ring positions of the sheet rings, the area of the outer ring of the sheet ring is reduced, when the sheet ring is arranged in the middle sleeve template, the contact area of the sheet ring and the inner hole wall of the middle sleeve template can be effectively reduced, and further, the friction force generated during contact can be reduced during demolding.

In the invention, notches are respectively arranged on the same-direction side surfaces of all the commutator segments, and are also filled with fillers which are bakelite powder. The breach effect is that cooperation bakelite powder filler supplies the follow-up slot milling machine to add the processing photoelectric sensing recognizer discernment, because breach and gap are the intercommunication, consequently between the adjacent commutator segment in breach department in fact be equivalent to the gap increase, when the photoelectric sensing recognizer discerns bakelite powder filler that increases to there being the straight line and in the middle, can judge as operating position, the blade of slot milling machine is processed along operating position can.

Compared with the prior art, the invention has the beneficial effects that

1. The width dimension of the commutator segment is easy to measure accurately.

2. Simplifies the production process, saves the cost of raw materials and improves the price competitiveness of the product.

3. The product after molding and pressing avoids the problem of tight or loose sheets, and improves the product quality.

4. The gap bakelite powder is filled with the simulated mica sheets for photoelectric identification, so that the subsequent slot milling machine can be conveniently processed and controlled.

5. The waste of raw materials and labor is reduced, and the efficiency, the yield and the customer satisfaction of measurement and groove processing are improved.

Drawings

Fig. 1 is a perspective view of a prior art commutator segment ring structure with mica plates.

Fig. 2 is a front view of a prior art commutator segment ring structure with mica plates.

Fig. 3 is a perspective view of the structure of the present invention.

Fig. 4 is a front view of the structure of the present invention.

Fig. 5 is a front view of a single segment construction of the present invention.

Fig. 6 is a top view of a single segment construction of the present invention.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

As shown in fig. 3 and 4, the commutator segment ring structure without mica plates of the present invention includes a plurality of commutator segments 1, and each commutator segment is surrounded into a ring according to a circle organization, so as to form a segment ring.

As shown in fig. 5 and 6, two symmetrical side surfaces of each segment are respectively set as a bending surface with a bent middle, and the side surface of each segment 1 is divided into an upper section plane 1.1 and a lower section plane 1.2 by a bent part 1.3. In the segment ring, the opposite side surfaces of the adjacent commutator segments 1 are partially contacted, specifically, the lower section planes 1.2 of the opposite side surfaces of the adjacent commutator segments 1 are in surface contact with each other, and the upper section planes 1.1 of the opposite side surfaces of the adjacent commutator segments 1 are unfolded in opposite directions, so that a gap 4 is formed between the adjacent commutator segments 1 and extends to the outer ring position of the segment ring.

In fig. 5 and 6, the bent part 1.3 of the side surface of the commutator segment 1 is a straight line bent part, and actually, the bent part 1.3 can be designed to be an arc bent part, so that the opposite side surfaces of the adjacent commutator segments 1 can be in line contact with each other through the arc bent part, and a gap 4 can also be formed between the adjacent commutator segments 1 and the part extending to the outer ring position of the segment ring.

In the invention, the side surface of each commutator segment 1 can also be directly designed into an arc surface, so that the opposite side surfaces of the adjacent commutator segments 1 realize line contact through the arc surfaces.

Each commutator segment 1 is also provided with a notch 3 on one side (anticlockwise in the embodiment) in the same clockwise or anticlockwise direction, and the notch 3 of each commutator segment 1 is respectively communicated with a gap 4 between adjacent commutator segments 1 in the same direction of the notch 3.

When the filler is injected, bakelite powder is selected as the filler, the filler is injected into the gap 3 and the gap 4, and the adjacent commutator segments 1 are adhered by the filler. By controlling the filling amount of the filling materials, the tightness or looseness of the adjacent commutator segments can be controlled. When the commutator segments are required to be loosened, more filling materials can be controlled to be injected, and even more filling materials can enable adjacent commutator segments 1 to be properly separated from each other, so that the adjustment of the looseness of the commutator segments is realized; when the sheet is required to be tight, less filler is injected. The amount of the filler can be calculated according to the shapes of the gap 4 and the gap 3, and the filler injection can realize a one-time automatic program without manual participation.

The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims

1. The utility model provides a commutator segment circle structure of no mica sheet, includes the sheet circle that encloses into the round by a plurality of commutator segments and forms which characterized in that: in the sheet ring, the opposite side surfaces of the adjacent commutator segments are partially contacted, so that gaps are respectively formed at the parts extending to the outer ring position of the sheet ring between the adjacent commutator segments, and the filler is respectively injected into the gaps in the sheet ring and is adhered to the adjacent commutator segments.

2. The commutator segment ring structure without the mica plate according to claim 1, which is characterized in that: gaps are respectively arranged on one side of each reversing piece in the same clockwise or anticlockwise direction, and the gaps of each reversing piece are respectively communicated with the gaps between the adjacent reversing pieces in the same direction of the gaps.

3. The commutator segment ring structure without the mica plate according to claim 1, which is characterized in that: the side surfaces of each commutator segment are respectively designed into arc surfaces, so that the partial contact between the opposite side surfaces of the adjacent commutator segments is linear contact.

4. The commutator segment ring structure without the mica plate according to claim 1, which is characterized in that: the side surfaces of each commutator segment are respectively provided with a bent surface which is bent, so that the partial contact between the opposite side surfaces of the adjacent commutator segments is linear contact or partial surface contact.

5. The commutator segment ring structure without the mica plate according to claim 1, which is characterized in that: the filler is bakelite powder.