Commutator with reinforcing ring

Abstract

The utility model discloses a commutator with a reinforcing ring, which comprises a bushing structure and a commutator segment, the commutator segment is sleeved outside the bushing structure, the commutator segment and the bushing structure are integrally pressed and molded through bakelite powder, the upper end and the lower end of the commutator segment are both provided with annular grooves, and the upper end and the lower end of the commutator segment are respectively provided with a reinforcing ring. And a reinforcing ring is installed in an inner cavity of the annular groove, vertical grooves are formed in the inner wall of the annular groove at equal intervals, clamping grooves are formed in the upper end and the lower end of the outer wall of the lining structure correspondingly, and clamping bolts are fixedly installed on the inner side wall of the reinforcing ring at equal intervals. According to the commutator, the reinforcing rings with the clamping bolts are matched with the clamping grooves for use, so that the firmness between the commutator segments and the lining can be improved when the commutator is used, jumping sheets and flying sheets of the commutator segments and autorotation of the lining structure 1 are effectively prevented, the quality of the commutator is improved, and the service life of the commutator is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of commutator technology, specifically a commutator with a reinforced ring. Background Technology

[0002] Commutators are mainly used in the motor industry. They are classified into planar commutators, slotted commutators, and hook-type commutators. They primarily consist of an insulating substrate and commutator segments arranged on the circumference of the substrate. Insulating strips are placed between adjacent commutator segments to separate and insulate them. A bent portion at one end of each commutator segment is used for wiring. Currently, the connection between the commutator segments and the substrate is achieved by embedding connecting wings on the commutator segments into the substrate during injection molding. However, due to the small contact area between the connecting wings and the substrate, the commutator is subjected to centrifugal force during operation, which can easily cause the commutator segments to separate from the substrate. Utility Model Content

[0003] The purpose of this invention is to provide a commutator with a reinforced ring to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A commutator with a reinforcing ring includes a bushing structure and a commutator segment. The commutator segment is fitted onto the outside of the bushing structure and is integrally formed by pressing bakelite powder onto the bushing structure. Annular grooves are formed at both the upper and lower ends of the commutator segment. A reinforcing ring is installed in the inner cavity of the annular groove. Vertical grooves are formed at equal intervals on the inner wall of the annular groove. Snap-fit ​​grooves are formed at both the upper and lower ends of the outer wall of the bushing structure. Snap-fit ​​bolts are fixedly installed at equal intervals on the inner sidewall of the reinforcing ring.

[0006] Preferably, the number of vertical grooves, snap-fit ​​grooves, and snap-fit ​​bolts is equal, and the diameter of the snap-fit ​​bolts is equal to the inner width of the vertical grooves and snap-fit ​​grooves.

[0007] Preferably, the end of the snap-fit ​​bolt passes through the annular groove and extends into the inner cavity of the snap-fit ​​groove.

[0008] Preferably, the inner cavity of the vertical groove has an overall U-shaped structure.

[0009] Preferably, a small spring is fitted on the outer wall of the snap-fit ​​bolt, one end of the small spring is fixed to the outer wall of the snap-fit ​​bolt, and the other end of the small spring abuts against the inner wall of the vertical groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This commutator with a reinforcing ring, through the use of a reinforcing ring with a snap-fit ​​bolt in conjunction with a snap-fit ​​groove, can increase the firmness between the commutator segments and the inner liner during use, thereby effectively preventing the commutator segments from jumping or flying, as well as the rotation of the bushing structure 1, thus improving the quality of the commutator and extending its service life.

[0012] 2. This commutator with a reinforcing ring, through the design and use of a small spring, increases the friction between the commutator and the bakelite powder during use. On the other hand, it can also adaptively apply a reverse force to the fixed ring, pushing the reinforcing ring to a certain extent to have a tendency to move, thereby satisfying the effect of the tension caused by thermal expansion and contraction on the commutator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is an exploded view of the structure of this utility model;

[0015] Figure 3 This utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0016] In the diagram: 1. Bushing structure; 2. Commutator segment; 3. Annular groove; 4. Vertical groove; 5. Snap-fit ​​groove; 6. Reinforcing ring; 7. Snap-fit ​​bolt; 8. Small spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Cashier Month Figure 1-3 This utility model provides a technical solution for a commutator with a reinforced ring:

[0019] Example:

[0020] The commutator mainly includes a bushing structure 1 and a commutator segment 2. The commutator segment 2 is fitted on the outer ring of the bushing structure 1. The commutator segment 2 is integrally die-cast with the bushing structure 1 using bakelite powder.

[0021] Annular grooves 3 are provided at both the upper and lower ends of the commutator segment 2, and a reinforcing ring 6 is installed in the inner cavity of the annular groove 3.

[0022] Vertical grooves 4 are provided at equal intervals on the inner wall of the annular groove 3, and snap-fit ​​grooves 5 are provided at both the upper and lower ends of the outer wall of the bushing structure 1.

[0023] Clamping bolts 7 are fixedly installed at equal intervals on the inner wall of the reinforcing ring 6.

[0024] The inner width of the annular groove 3 is equal to the thickness of the reinforcing ring 6.

[0025] The number of vertical grooves 4, snap-fit ​​grooves 5, and snap-fit ​​bolts 7 are equal, and the diameter of snap-fit ​​bolts 7 is smaller than the inner width of vertical grooves 4 and snap-fit ​​grooves 5.

[0026] The end of the snap-fit ​​7 passes through the vertical groove 4 and extends into the inner cavity of the snap-fit ​​groove 5.

[0027] Among them, the inner cavity of the vertical groove 4 has a convex shape.

[0028] Among them, a small spring 8 is fitted on the outer wall of the snap-fit ​​7, and one end of the small spring 8 is fixedly connected to the outer wall of the snap-fit ​​7.

[0029] In this embodiment, the state after assembly is as follows: Figure 1 As shown, at this time, the end of the snap-fit ​​7 is stuck in the inner cavity of the snap-fit ​​groove 5, one end of the small spring 8 is against the inner wall of the vertical groove 4, and the small spring 8 is in a compressed state.

[0030] In this technical solution, the reinforcing ring 7 with the snap-fit ​​bolt 7 is used in conjunction with the snap-fit ​​groove 5 to increase the firmness between the commutator segment 2 and the inner liner when the commutator is in use. This effectively prevents the commutator segment 2 from jumping and flying, as well as the rotation of the bushing structure 1, thereby improving the quality of the commutator and extending its service life.

[0031] Through the design and use of the small spring 8, during the operation of the commutator, on the one hand, the friction between it and the bakelite powder is increased, and on the other hand, a reverse force is applied to the fixed ring 6 adaptively, which to a certain extent pushes the reinforcing ring 6 to have a tendency to move, thereby satisfying the effect of the tension generated by thermal expansion and contraction in the commutator on the commutator.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A commutator with a reinforced ring, comprising a bushing structure (1) and commutator segments (2), characterized in that: The commutator segment (2) is fitted on the outside of the bushing structure (1), and the commutator segment (2) is integrally pressed with the bushing structure (1) by bakelite powder. The upper and lower ends of the commutator segment (2) are provided with annular grooves (3). A reinforcing ring (6) is installed in the inner cavity of the annular groove (3). Vertical grooves (4) are provided at equal intervals on the inner wall of the annular groove (3). The upper and lower ends of the outer wall of the bushing structure (1) are provided with snap-fit ​​grooves (5). Snap-fit ​​bolts (7) are fixedly installed at equal intervals on the inner side wall of the reinforcing ring (6).

2. A commutator with a reinforced ring according to claim 1, characterized in that: The number of vertical grooves (4), snap-fit ​​grooves (5) and snap-fit ​​bolts (7) are equal, and the diameter of the snap-fit ​​bolts (7) is equal to the inner width of the vertical grooves (4) and snap-fit ​​grooves (5).

3. A commutator with a reinforced ring according to claim 1, characterized in that: The end of the snap-fit ​​bolt (7) passes through the annular groove (3) and extends into the inner cavity of the snap-fit ​​groove (5).

4. A commutator with a reinforced ring according to claim 1, characterized in that: The inner cavity of the vertical groove (4) is in the shape of a concave character.

5. A commutator with reinforcing rings according to claim 1, characterized in that: A small spring (8) is fitted on the outer wall of the snap-fit ​​bolt (7). One end of the small spring (8) is fixed on the outer wall of the snap-fit ​​bolt (7), and the other end of the small spring (8) abuts against the inner wall of the vertical groove (4).

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