Reinforcing ring of commutator

Abstract

The utility model relates to a commutator reinforcing ring, comprising a reinforcing ring main body which is annularly arranged; the reinforcing blocks are arranged at one end of the reinforcing ring body in a protruding mode, the multiple reinforcing blocks are arranged around the central axis of the reinforcing ring body in the circumferential direction, and a gap allowing a single copper bar to be inserted therein is formed between every two adjacent reinforcing blocks. The beneficial effects of the utility model are that the reinforcing blocks are clamped between the adjacent copper bars, and the reinforcing ring body is embedded in the limiting grooves of the copper bars, thereby effectively improving the connection stability of the copper bars, preventing the copper bars from deviating, loosening and the like in the operation process of the commutator, effectively improving the overall strength and stability of the commutator, and prolonging the service life of the commutator. The service life is prolonged, and the installation of the copper bar is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of commutators, in particular to a commutator reinforcement ring. Background Art

[0002] The commutator, also known as the "rectifier," is a crucial component in the armature of DC and AC commutator motors. It is composed of a cylindrical or disc-shaped assembly of copper plates separated by mica sheets, each of which is connected to several elements of the armature winding. As the armature rotates, the copper plates successively come into contact with fixed brushes. In DC motors, the brushes and commutator convert the AC current in the armature winding into DC current between the brushes. In AC commutator motors, the commutator ensures that the frequency of the AC current between the brushes meets operating requirements.

[0003] Chinese patent document 2019202881543 discloses a stable commutator with a reinforcement ring, including a bushing, a commutator segment, bakelite powder, a support foot, a hook, a mica sheet and a reinforcement ring. The commutator segment is integrally die-casted with the bushing by bakelite powder. The outer circumferential surface of the bushing is provided with bosses and concave platforms at intervals in the annular direction. The surface of the boss is provided with straight lines with a spacing distribution. The two ends of the commutator segment are respectively provided with a first slot and a second slot in the annular direction. The first slot and the second slot are fixed with a reinforcement ring. Ring, the inner diameter of the reinforcement ring is 18.0-18.5mm, and the outer diameter is 20.5-21.0mm; a support foot is circumferentially arranged on the inner side of the commutator segment, and a plurality of hooks are circumferentially fixed to one end of the commutator segment, and mica sheets are distributed on the outer circumference of the commutator segment at intervals; the overall diameter of the commutator is 24.3-24.6mm, and the overall length is 19.0-19.5mm. The end of the bushing adopts a trapezoidal structure, and the side of the trapezoidal structure forms an angle of 60° with the vertical line.

[0004] The connection between the reinforcement ring and the commutator segments in the above patent is not strong enough. When the motor is running at high speed, due to the action of centrifugal force, adjacent commutator segments are prone to displacement and loosening, which causes the commutator to fail to work properly. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a commutator reinforcement ring to solve the above problems.

[0006] The technical solution of the utility model is achieved as follows: a commutator reinforcement ring, comprising:

[0007] A reinforcement ring body, the reinforcement ring body being arranged in an annular shape;

[0008] The reinforcement block is protruding from one end of the reinforcement ring body and is arranged circumferentially in multiple numbers around the central axis of the reinforcement ring body. A gap is provided between adjacent reinforcement blocks for inserting a single copper busbar.

[0009] The present invention is further configured as follows: an angle α is provided between the inner sides of adjacent reinforcing blocks, an angle β is provided between the outer sides of adjacent reinforcing blocks, and the angle β is greater than the angle α.

[0010] The present invention is further configured as follows: the angle α is set to 1°, and the angle β is set to 9°.

[0011] The present invention is further configured as follows: two ends of the reinforcement block protrude from the inner side and the outer side of the reinforcement ring body respectively, and one end of the inner side of the reinforcement block extends toward the extension line of the central axis of the reinforcement ring body.

[0012] The present invention is further configured such that: the cross-sections of the reinforcement ring body and the reinforcement block are both square.

[0013] The present invention is further configured such that: both side edges of one end of the reinforcement ring body provided with the reinforcement block are rounded.

[0014] The utility model is further configured such that: the reinforcement ring body and the reinforcement block are integrally formed.

[0015] The present invention is further configured such that: one end of the reinforcing block facing inward protrudes from the inner wall of the reinforcing ring body by 0.8 mm, and one end of the reinforcing block facing outward protrudes from the outer wall of the reinforcing ring body by 0.15 mm.

[0016] By adopting the above technical solution, the reinforcement block is clamped between adjacent copper bars, and the reinforcement ring body is embedded in the limit groove of the copper bar, thereby effectively improving the connection stability of the copper bar, avoiding the copper bar from shifting or loosening during the operation of the commutator, effectively improving the overall strength and stability of the commutator, extending its service life, and making it easier to install the copper bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 The reinforcement ring structure of the utility model is three-dimensional Figure 1 ;

[0019] Figure 2 The reinforcement ring structure of the utility model is three-dimensional Figure 2 ;

[0020] Figure 3 This is a bottom view of the reinforcement ring structure of the utility model;

[0021] Figure 4 This is a structural diagram of the reinforcement ring of the utility model installed in the commutator;

[0022] Figure 5 This is a cross-sectional view of the structure of the reinforcement ring of the utility model installed in the commutator; DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1-Figure 5 As shown, the utility model discloses a commutator reinforcement ring, comprising:

[0025] A reinforcement ring body 1, wherein the reinforcement ring body 1 is arranged in an annular shape;

[0026] The reinforcement block 2 is protruding from one end of the reinforcement ring body 1 and is arranged circumferentially in multiple numbers around the central axis of the reinforcement ring body 1. A gap 3 for inserting a single copper busbar is provided between adjacent reinforcement blocks 2.

[0027] In the embodiment of the present invention, an angle α is set between the inner sides of adjacent reinforcing blocks 2 , and an angle β is set between the outer sides of adjacent reinforcing blocks 2 , and the angle β is greater than the angle α.

[0028] In the embodiment of the present invention, the angle α is set to 1°, and the angle β is set to 9°.

[0029] In the embodiment of the present invention, both ends of the reinforcement block 2 protrude from the inner side and the outer side of the reinforcement ring body 1 respectively, and one end of the inner side of the reinforcement block 2 extends toward the extension line of the central axis of the reinforcement ring body 1.

[0030] In the embodiment of the present invention, the cross-sections of the reinforcement ring body 1 and the reinforcement block 2 are both square.

[0031] In the embodiment of the present invention, both side edges of one end of the reinforcement ring body 1 provided with the reinforcement block 2 are rounded.

[0032] In the embodiment of the present invention, the reinforcement ring body 1 and the reinforcement block 2 are integrally formed.

[0033] In the embodiment of the present invention, the inner end of the reinforcement block 2 protrudes from the inner wall of the reinforcement ring body 1 by 0.8 mm, and the outer end of the reinforcement block 2 protrudes from the outer wall of the reinforcement ring body 1 by 0.15 mm.

[0034] By adopting the above technical solution, the reinforcement block 2 is clamped between adjacent copper bars, and the reinforcement ring body 1 is embedded in the limiting groove of the copper bar, thereby effectively improving the connection stability of the copper bar, avoiding the copper bar from shifting or loosening during the operation of the commutator, effectively improving the overall strength and stability of the commutator, extending its service life, and making it easier to install the copper bar.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A commutator reinforcement ring, characterized in that: include, A reinforcement ring body (1), wherein the reinforcement ring body (1) is arranged in an annular shape; A reinforcement block (2) is protruding from one end of the reinforcement ring body (1) and is arranged in a plurality of circumferential directions around the central axis of the reinforcement ring body (1); a gap (3) for inserting a single copper busbar is provided between adjacent reinforcement blocks (2).

2. A commutator reinforcement ring according to claim 1, characterized in that: An angle α is provided between the inner sides of adjacent reinforcing blocks (2), and an angle β is provided between the outer sides of adjacent reinforcing blocks (2), wherein the angle β is greater than the angle α.

3. A commutator reinforcement ring according to claim 2, characterized in that: The angle α is set to 1°, and the angle β is set to 9°.

4. The commutator reinforcement ring according to claim 1, characterized in that: The two ends of the reinforcement block (2) protrude from the inner side and the outer side of the reinforcement ring body (1), respectively, and one end of the inner side of the reinforcement block (2) extends toward the extension line of the central axis of the reinforcement ring body (1).

5. The commutator reinforcement ring according to claim 1, characterized in that: The cross-sections of the reinforcement ring body (1) and the reinforcement block (2) are both square.

6. The commutator reinforcement ring according to claim 1, characterized in that: The reinforcement ring body (1) is provided with a reinforcement block (2), and both side edges of one end are rounded.

7. The commutator reinforcement ring according to claim 1, characterized in that: The reinforcement ring body (1) and the reinforcement block (2) are integrally formed.

8. The commutator reinforcement ring according to claim 1, characterized in that: The inner end of the reinforcing block (2) protrudes from the inner wall of the reinforcing ring body (1) by 0.8 mm, and the outer end of the reinforcing block (2) protrudes from the outer wall of the reinforcing ring body (1) by 0.15 mm.

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