Pear hook type commutator seat with good wear-resistant effect

Abstract

The utility model relates to the technical field of commutators, in particular to a pear hook type commutator seat with a good wear-resistant effect, which comprises a base, copper sheets, a pear hook frame, a connecting seat and a fixing piece, the outer side of the base is provided with a plurality of groups of copper sheets, and one end of each copper sheet is provided with a hook corner. Compared with a traditional key groove connection mode, the novel structure is provided with the mounting groove, the bearing groove and the like, a certain space is formed between the base and the pear hook frame, channels for air circulation are increased, heat dissipation is facilitated, the problem that heat dissipation is difficult after a commutator is used for a long time is solved, and the commutator is simple in structure and convenient to use. The optimized connecting structure reduces direct friction at the joint of the base and the rotating shaft. And the pear hook frame is connected with the base through the connecting seat, so that disassembly, assembly and replacement are convenient, the fixing piece is stable, abrasion caused by friction is reduced, the service life of the commutator seat is prolonged, and the precision of equipment is ensured.

Description

A pear-hook type commutator seat with good wear resistance Technical Field

[0001] This utility model relates to the field of commutator technology, specifically to a pear-hook type commutator seat with good wear resistance. Background Technology

[0002] A commutator typically consists of multiple commutator segments, usually made of copper, arranged in a ring and insulated from each other. The commutator segments are separated by insulating materials such as mica sheets to prevent short circuits. The entire commutator is mounted on the motor shaft and rotates with the shaft.

[0003] The existing commutator shaft and base are connected by a keyway, leaving a small gap. After long-term use, the commutator is not easy to dissipate heat, and the connection between the base and the shaft is prone to wear, which affects the accuracy of the equipment and makes it inconvenient to use. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a pear-hook type commutator seat with good wear resistance.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pear-shaped commutator seat with good wear resistance, comprising a base and copper plates. Several sets of copper plates are arranged on the outer side of the base, and one end of each copper plate is provided with a hook. The base also includes a pear-shaped hook frame, a connecting seat, and a fixing member. An installation groove is provided on the inner wall of the base away from the hook, and an installation ring is provided on the end of the installation groove near the hook. A bearing groove is provided on the side of the pear-shaped hook frame near the center of the base, and the opening of the bearing groove is located at the end away from the hook. The connecting seat is T-shaped, and a fixing member for fixing several sets of the pear-shaped hook frame is also provided on the base.

[0008] Preferably, the fastener includes a retaining ring and a pressure ring, and a retaining groove is also provided in the bearing groove. The inner diameter of the pressure ring is adapted to the inner diameter of the base, and a retaining ring that engages with the retaining groove is also provided on the outer side of the pressure ring.

[0009] Preferably, the end of the pressure ring away from the hook corner is also provided with an end cap.

[0010] To facilitate the disassembly of the fixing components, this utility model is improved by providing an unlocking groove at one end of the pressure ring near the center of the base.

[0011] Preferably, the inner edge of the bearing groove is also rounded.

[0012] To ensure the stability of the end cap, this utility model is improved by providing a limiting block below the end cap and a limiting groove adapted to the limiting block on the base.

[0013] (III) Beneficial Effects

[0014] Compared with the prior art, this utility model provides a pear-hook type commutator seat with good wear resistance, which has the following beneficial effects:

[0015] This wear-resistant pear-hook commutator holder, compared to the traditional keyway connection, features a new structure with mounting slots and bearing slots. This creates space between the base and the pear-hook frame, increasing airflow and facilitating heat dissipation. This solves the problem of heat dissipation difficulties after prolonged use of the commutator. The optimized connection structure reduces direct friction at the base-shaft connection, improving wear resistance. The pear-hook frame is connected to the base via a connecting seat, facilitating disassembly and replacement. The fixed components provide stability, reducing friction-induced wear, extending the commutator holder's service life, and ensuring equipment accuracy. Attached Figure Description

[0016] Figure 1 is a front view schematic diagram of the structure of this utility model;

[0017] Figure 2 is a bottom view of the structure of this utility model;

[0018] Figure 3 is a front view of the exploded structure of this utility model;

[0019] Figure 4 is a top-down view of the structure of this utility model after an explosion.

[0020] In the diagram: 1. Base; 2. Copper sheet; 3. Hook corner; 4. Pear hook frame; 5. Connecting seat; 6. Mounting ring; 7. Snap ring; 8. Pressure ring; 9. End cap; 10. Unlocking groove; 11. Rounding; 12. Limiting block. Detailed Implementation

[0021] 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.

[0022] Please refer to Figures 1-4. A pear-hook type commutator seat with good wear resistance includes a base 1 and copper plates 2. Several sets of copper plates 2 are arranged on the outer side of the base 1. One end of each copper plate 2 is also provided with a hook 3. The seat also includes a pear-hook frame 4, a connecting seat 5, and a fixing component. An installation groove is provided on the inner wall of the base 1 at the end away from the hook 3. An installation ring 6 is also provided on the end of the installation groove near the hook 3. A bearing groove is provided on the side of the pear-hook frame 4 near the center of the base 1. The opening of the bearing groove is located at the end away from the hook 3. The connecting seat 5 is T-shaped. The base 1 is also provided with a fixing component for fixing several sets of pear-hook frames 4. The fixing component includes a retaining ring 7 and a pressure ring 8. A retaining groove is also provided in the bearing groove. The inner diameter of the pressure ring 8 is adapted to the inner diameter of the base 1. A retaining ring 7 is also provided on the outer side of the pressure ring 8 to engage with the retaining groove.

[0023] During installation, align the side of the pear hook frame 4 with the bearing groove to the mounting groove of the base 1, and insert the T-shaped connecting seat 5 into the bearing groove. The pear hook frame 4 is initially positioned using the fit between the bearing groove and the connecting seat 5. Next, insert the retaining ring 7 into the retaining groove within the bearing groove, and then place the pressure ring 8, whose inner diameter matches the inner diameter of the base 1, onto the base 1, so that the outer part of the pressure ring 8 engages with the retaining ring 7, thereby firmly fixing the pear hook frame 4 to the base 1. An end cap 9 is installed at the end of the pressure ring 8 furthest from the hook angle 3. The limiting block 12 below the end cap 9 engages with the limiting groove on the base 1, further enhancing the stability of the entire structure and preventing displacement or rotation of the end cap 9, pressure ring 8, and pear hook frame 4.

[0024] The design of the mounting slot and bearing slot creates an airflow channel between the base 1 and the pear hook frame 4. After the motor generates heat, the hot air will naturally rise. These channels provide space for the flow of hot air, allowing it to be smoothly discharged, while cool air can be replenished from other parts, forming an air circulation, thereby achieving a good heat dissipation effect and solving the problem of difficult heat dissipation in traditional commutators.

[0025] Traditional keyway connections result in direct contact between the base 1 and the rotating shaft with a small gap, making them prone to wear. In this new structure, the pear-shaped hook frame 4 is connected to the base 1 via a connecting seat 5, avoiding direct friction between the base 1 and the rotating shaft. Furthermore, the fixing component securely holds the pear-shaped hook frame 4 to the base 1, reducing frictional losses caused by relative movement. Even with prolonged motor operation, this structure effectively reduces wear, extends the service life of the commutator seat, and ensures the accuracy of the equipment.

[0026] When maintenance or component replacement is required on the commutator housing, the fastener can be removed via the unlocking groove 10 at the center end of the pressure ring 8 near the base 1. By inserting a tool into the unlocking groove 10 and applying force, the fastener is separated from the base 1, allowing for the removal of the pear-shaped bracket 4 and facilitating the inspection, repair, or replacement of internal components.

[0027] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0028] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0029] 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.

Claims

1. A pear-shaped commutator seat with good wear resistance, comprising a base (1) and copper plates (2), wherein a plurality of sets of copper plates (2) are arranged on the outer side of the base (1), and one end of each copper plate (2) is provided with a hook (3), characterized in that, It also includes a pear hook frame (4), a connecting seat (5) and a fixing component. The inner wall of the base (1) is provided with an installation groove at the end away from the hook corner (3). The installation groove is also provided with an installation ring (6) at the end near the hook corner (3). The pear hook frame (4) is provided with a bearing groove on the side near the center of the base (1). The opening of the bearing groove is located at the end away from the hook corner (3). The connecting seat (5) is T-shaped. The base (1) is also provided with a fixing component for fixing several sets of the pear hook frame (4).

2. The pear-hook type commutator seat with good wear resistance according to claim 1, characterized in that, The fastener includes a retaining ring (7) and a pressure ring (8). A retaining groove is also provided in the bearing groove. The inner diameter of the pressure ring (8) is adapted to the inner diameter of the base (1). A retaining ring (7) that engages with the retaining groove is also provided on the outer side of the pressure ring (8).

3. A pear hook commutator segment with good wear resistance according to claim 2, characterized in that, The pressure ring (8) is also provided with an end cap (9) at the end away from the hook angle (3).

4. A pear hook commutator segment with good wear resistance according to claim 3, characterized in that, The pressure ring (8) is also provided with an unlocking groove (10) at one end near the center of the base (1).

5. The pear-hook type commutator seat with good wear resistance according to claim 4, characterized in that, The inner wall edge of the bearing groove is also rounded (11).

6. The pear-hook type commutator seat with good wear resistance according to claim 5, characterized in that, A limiting block (12) is also provided below the end cap (9), and a limiting groove adapted to the limiting block (12) is also provided on the base (1).

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