Low-cost commutator

Abstract

The utility model relates to the technical field of commutators, in particular to a low-cost commutator which comprises a bakelite powder body, a plurality of commutator segments and a first end cover, the side face of the bakelite powder body is provided with a plurality of annularly-arranged installation grooves, and each installation groove is internally provided with one commutator segment. The first end cover is arranged at one end of the bakelite powder body and is detachably connected with the bakelite powder body, the first end cover is provided with a plurality of annularly arranged winding pins, the winding pins are in one-to-one correspondence with the commutator segments, and when the first end cover is connected with the bakelite powder body, each winding pin is connected with the corresponding commutator segment; according to the utility model, through the split design of the winding pins and the commutator segments, when the commutator segments are worn, only the commutator segments need to be replaced, and the advantage of lower use cost and replacement cost is realized.

Description

Technical Field

[0001] The present application relates to the technical field of commutators, and more specifically to a low-cost commutator. Background Art

[0002] The commutator is an important component in the motor. When the armature rotates, the commutator segments on the commutator successively contact the fixed brushes. In addition, in this application, "low cost" refers to low use cost and low replacement cost.

[0003] The patent document (CN215934029U) discloses a low-cost commutator, including a commutator body and a plurality of commutator segments. The commutator body is provided with a plurality of mounting slots on the outside, and each mounting slot is provided with a commutator segment detachably. When the commutator segment is worn, only the commutator segment needs to be replaced without replacing the commutator body, thereby achieving the advantages of low use cost and replacement cost. It should also be pointed out that in the embodiment of the application, as shown in the drawings of the specification, Figure 1 As shown, one end of each commutator segment has a hook-shaped winding portion, and the hook-shaped winding portion is fixedly connected to the commutator segment as a whole. It should be pointed out that after the motor is used for a long time, the upper surface of the commutator segment is prone to wear after long-term contact with the brush, but the hook-shaped winding portion does not contact the brush during this process. Therefore, after the upper surface of the commutator segment is worn, the hook-shaped winding portion is actually intact. However, since in this application embodiment, when the commutator segment is replaced, the intact hook-shaped winding portion is also replaced together, there is room for further optimization of the use cost and replacement cost.

[0004] Therefore, there is a need to provide a low-cost commutator with lower use cost and replacement cost. Summary of the invention

[0005] The main purpose of the present application is to provide a low-cost commutator, wherein the low-cost commutator includes a bakelite powder body, a plurality of commutator segments and a first end cover, the side surface of the bakelite powder body has a plurality of mounting grooves arranged in an annular shape, each of the mounting grooves is provided with a commutator segment, the first end cover is arranged at one end of the bakelite powder body and is detachably connected to the bakelite powder body, the first end cover is provided with a plurality of wire winding pins arranged in an annular shape, the wire winding pins correspond to the commutator segments one by one, when the first end cover is connected to the bakelite powder body, each of the wire winding pins is connected to the corresponding commutator segment, by making the wire winding pins and the commutator segment separately designed, when the commutator segment is worn, only the commutator segment needs to be replaced, compared with the prior art in which the wire winding pins and the commutator segment are designed as one body, the embodiment of the present application has the advantages of lower use cost and replacement cost.

[0006] Another object of the present application is to provide a low-cost commutator, wherein each of the commutator segments comprises two symmetrically arranged arcuate portions. When the commutator segment is placed in the mounting groove, one of the arcuate portions extends out of the groove opening of the mounting groove by a predetermined distance, and the other arcuate portion is close to the groove bottom of the mounting groove. After one of the arcuate portions is worn, it is only necessary to flip the commutator segment 180° and use the other arcuate portion.

[0007] Another object of the present application is to provide a low-cost commutator, wherein the low-cost commutator also includes a second end cover, the second end cover is located at the end of the bakelite powder body away from the first end cover, and the second end cover is detachably connected to the bakelite powder body, and the end of the second end cover away from the bakelite powder body also has a accommodating cavity, and a plurality of pads are arranged in the accommodating cavity, and the pads are used to provide support for the worn arc surface portion.

[0008] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a low-cost commutator, wherein the low-cost commutator comprises:

[0009] A bakelite powder body, the side of which has a plurality of mounting grooves arranged in a ring shape; and

[0010] A plurality of commutator segments, each of the mounting slots being provided with a commutator segment; and

[0011] A first end cover, wherein the first end cover is disposed at one end of the bakelite powder body and is detachably connected to the bakelite powder body, the first end cover is provided with a plurality of wire winding pins arranged in a ring shape, the wire winding pins correspond to the commutator segments one by one, and when the first end cover is connected to the bakelite powder body, each of the wire winding pins is connected to the corresponding commutator segment.

[0012] In one or more embodiments of the present application, each of the commutator segments has a first slot at one end close to the first end cover, and each of the wire winding pins has an embedding portion at one end close to the bakelite powder body. When the first end cover is connected to the bakelite powder body, the embedding portion is engaged with the first slot.

[0013] In one or more embodiments of the present application, each of the commutator segments includes two symmetrically arranged arcuate portions. When the commutator segment is placed in the mounting groove, one of the arcuate portions extends out of the groove opening of the mounting groove by a predetermined distance, and the other arcuate portion is close to the bottom of the mounting groove.

[0014] In one or more embodiments of the present application, each of the two side surfaces of the commutator segment has a second slot, and each of the two side walls of the mounting slot has a first protrusion. When the commutator segment is placed in the mounting slot, the first protrusion is placed in the second slot.

[0015] In one or more embodiments of the present application, the low-cost commutator further includes a second end cover, which is located at an end of the bakelite powder body away from the first end cover, and the second end cover is detachably connected to the bakelite powder body.

[0016] In one or more embodiments of the present application, each of the commutator segments has a plurality of third slots on the side facing away from the first end cover, and the second end cover has a plurality of second protrusions on one end close to the bakelite powder body. When the second end cover is connected to the bakelite powder body, the second protrusions are inserted into the corresponding third slots.

[0017] In one or more embodiments of the present application, the end of the second end cover away from the bakelite powder body further has a receiving cavity, and a plurality of pads are arranged in the receiving cavity.

[0018] In one or more embodiments of the present application, the low-cost commutator further includes a sealing cover, which is detachably connected to the second end cover and seals the cavity opening of the accommodating cavity.

[0019] In an embodiment of the present application, a low-cost commutator includes a bakelite powder body, a plurality of commutator segments and a first end cover. The side of the bakelite powder body has a plurality of mounting grooves arranged in a ring shape, and a commutator segment is provided in each mounting groove. The first end cover is arranged at one end of the bakelite powder body and is detachably connected to the bakelite powder body. The first end cover is provided with a plurality of wire winding pins arranged in a ring shape, and the wire winding pins correspond to the commutator segments one by one. When the first end cover is connected to the bakelite powder body, each wire winding pin is connected to the corresponding commutator segment. By designing the wire winding pins and the commutator segments separately, when the commutator segments are worn, only the commutator segments need to be replaced. Compared with the integrated design of the wire winding pins and the commutator segments in the prior art, the embodiment of the present application has the advantages of lower use cost and replacement cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:

[0021] Figure 1 The figure shows a structural schematic diagram of a low-cost commutator of the present application at a certain viewing angle;

[0022] Figure 2 The figure shows a structural schematic diagram of a low-cost commutator from another perspective. DETAILED DESCRIPTION

[0023] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0024] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0025] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the utility model concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0026] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0027] Application Overview

[0028] In the existing commutator, the hook-shaped winding part is designed as an integral part with the commutator segment. When the commutator segment is replaced, the intact hook-shaped winding part is also replaced together. There is room for further optimization of the use cost and replacement cost.

[0029] Based on the above technical problems, the present application proposes a low-cost commutator, wherein the low-cost commutator has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the low-cost commutator provided by the present application is easy to produce and low-cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0030] Schematic low cost commutator,

[0031] refer to Figure 1 to Figure 2 A low-cost commutator according to a preferred embodiment of the utility model includes a bakelite powder body 10, a plurality of commutator segments 20 and a first end cover 30.

[0032] Specifically, Figure 1 and Figure 2 As shown, the side of the bakelite powder body 10 has a plurality of mounting grooves 101 arranged in an annular shape, and each of the mounting grooves 101 is provided with a commutator segment 20. The first end cover 30 is provided at one end of the bakelite powder body 10 and is detachably connected to the bakelite powder body 10 by screw connection. The first end cover 30 is provided with a plurality of wire winding pins 301 arranged in an annular shape, and the connection method between the wire winding pins 301 and the first end cover 30 includes but is not limited to one-piece injection molding. The wire winding pins 301 correspond to the commutator segments 20 one by one. When the first end cover 30 is connected to the bakelite powder body 10, each of the wire winding pins 301 is connected to the corresponding commutator segment 20. The commutator segment 20 and the wire winding pins 301 are both made of copper, and the material of the first end cover 30 is preferably insulating plastic.

[0033] More specifically, in order to realize the connection between the winding pin 301 and the commutator segment 20, as shown in FIG. Figure 1 As shown, each of the commutator segments 20 has a first slot 201 at one end close to the first end cover 30, and each of the wire winding pins 301 has a snap-in portion 3011 at one end close to the bakelite powder body 10. When the first end cover 30 is connected to the bakelite powder body 10, the snap-in portion 3011 is snap-fitted with the first slot 201.

[0034] It should be noted that, by designing the wire winding pin 301 and the commutator segment 20 separately, when the commutator segment 20 is worn, only the worn commutator segment 20 needs to be replaced without replacing the wire winding pin 301. Secondly, by installing the wire winding pin 301 on the first end cover 30 and making the clamping part 3011 clamped with the corresponding first clamping slot 201, it is not necessary to connect the wire winding pin 301 with the commutator segment 20 one by one. After the clamping part 3011 is aligned with the first clamping slot 201 and the first end cover 30 is installed on the bakelite powder body 10, each wire winding pin 301 is connected with the corresponding commutator segment 20, and the replacement efficiency is high. Obviously, compared with the prior art in which the wire winding pin 301 and the commutator segment 20 are designed as one body, when replacing the commutator segment 20, the intact wire winding pin 301 needs to be replaced together. The embodiment of the present application has the advantages of lower use cost and replacement cost.

[0035] Further, in the embodiments of the present application, Figure 2As shown, each of the commutator segments 20 includes two symmetrically arranged arcuate portions 202 . When the commutator segment 20 is placed in the mounting groove 101 , one of the arcuate portions 202 extends out of the groove opening of the mounting groove 101 by a predetermined distance, and the other arcuate portion 202 is close to the groove bottom of the mounting groove 101 .

[0036] It should be noted that when the motor is working, the arc surface portion 202 extending out of the notch of the mounting slot 101 contacts the brush. When the arc surface portion 202 is worn out after long-term use, the maintenance personnel only needs to take out the commutator segment 20, flip it 180°, and make the other arc surface portion 202 extend out of the notch of the mounting slot 101 by a predetermined distance, thereby completing the replacement of the commutator segment 20. That is, each commutator segment 20 can be used twice, and there is no need to take a new commutator segment 20 when replacing it for the first time, so replacement is more convenient.

[0037] Furthermore, in order to fix the height position of the commutator segment 20 in the mounting groove 101 and limit the position of the commutator segment 20 in the height direction, as shown in FIG. Figure 2 As shown, each of the two side surfaces of the commutator segment 20 has a second slot 203, and each of the two side walls of the mounting groove 101 has a first protrusion 1011. When the commutator segment 20 is placed in the mounting groove 101, the first protrusion 1011 is placed in the second slot 203. In addition, the center plane of the second slot 203 coincides with the center plane of the height direction of the commutator segment 20, so that after the annular segment is flipped 180°, the position of the second slot 203 remains unchanged.

[0038] Furthermore, in order to prevent the commutator segment 20 from being separated from the mounting groove 101 from the end away from the first end cover 30, Figure 1 As shown, the low-cost commutator further includes a second end cover 40, which is located at one end of the bakelite powder body 10 away from the first end cover 30, and the second end cover 40 is detachably connected to the bakelite powder body 10 by screw connection.

[0039] Furthermore, in order to further prevent the commutator segment 20 from being separated, as Figure 1 As shown, each of the commutator segments 20 has a plurality of third slots 204 on the side facing away from the first end cover 30 , and the second end cover 40 has a plurality of second protrusions 401 on one end close to the bakelite powder body 10 . When the second end cover 40 is connected to the bakelite powder body 10 , the second protrusions 401 are inserted into the corresponding third slots 204 .

[0040] Further, when the arc surface portion 202 is worn for a long time, and after the commutator segment 20 is turned over, the worn arc surface portion 202 is placed in the mounting groove 101. It should be noted that when the arc surface portion 202 is not worn, the arc surface portion 202 is in contact with the bottom wall of the mounting groove 101. When the arc surface portion 202 is worn, since the position of the second slot 203 remains unchanged, there is a gap between the worn arc surface portion 202 and the bottom wall of the mounting groove 101. In order to fill this gap, in the embodiment of the present application, as shown in FIG. Figure 1 As shown, the low-cost commutator also includes a plurality of pads 50. When the maintenance personnel flip the commutator segment 20 and insert the commutator segment 20 into the corresponding mounting groove 101, a pad 50 is placed on the bottom wall of each mounting groove 101 to fill the gap at the worn area so that the bottom of the commutator segment 20 has support.

[0041] Further, to store the pad strip 50, as Figure 1 As shown, the second end cover 40 further has a receiving cavity 402 at one end away from the bakelite powder body 10 , and a plurality of the cushion strips 50 are disposed in the receiving cavity 402 .

[0042] In addition, in order to close the accommodating cavity 402 under normal conditions, Figure 1 As shown, the low-cost commutator further includes a sealing cover 60 , which is detachably connected to the second end cover 40 by screws and seals the opening of the accommodating cavity 402 .

[0043] It should be added that, in the embodiment of the present application, the first end cover 30 , the bakelite powder body 10 , the second end cover 40 and the sealing cover 60 all have a through hole 102 that is coaxially arranged.

[0044] In summary, the low-cost commutator based on the embodiment of the present application is explained, which provides the low-cost commutator with advantages such as lower usage cost and replacement cost.

[0045] It is worth mentioning that in the embodiment of the present application, the low-cost commutator has a simple structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the low-cost commutator provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0046] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A low-cost commutator, characterized in that: The low-cost commutator includes A bakelite powder body, the side of which has a plurality of mounting grooves arranged in a ring shape; and A plurality of commutator segments, each of the mounting slots being provided with a commutator segment; and A first end cover, wherein the first end cover is disposed at one end of the bakelite powder body and is detachably connected to the bakelite powder body, the first end cover is provided with a plurality of wire winding pins arranged in a ring shape, the wire winding pins correspond to the commutator segments one by one, and when the first end cover is connected to the bakelite powder body, each of the wire winding pins is connected to the corresponding commutator segment.

2. The low-cost commutator according to claim 1, characterized in that: Each commutator segment has a first slot at one end close to the first end cover, and each wire winding pin has a locking portion at one end close to the bakelite powder body. When the first end cover is connected to the bakelite powder body, the locking portion is locked with the first slot.

3. The low-cost commutator according to claim 1 or 2, characterized in that: Each of the commutator segments includes two symmetrically arranged arcuate portions. When the commutator segment is placed in the mounting groove, one of the arcuate portions extends out of the groove opening of the mounting groove by a predetermined distance, and the other arcuate portion is close to the groove bottom of the mounting groove.

4. The low-cost commutator according to claim 3, characterized in that: Both side surfaces of each commutator segment have a second slot, and both side walls of each mounting slot have a first protrusion. When the commutator segment is placed in the mounting slot, the first protrusion is placed in the second slot.

5. The low-cost commutator according to claim 3, characterized in that: The low-cost commutator further includes a second end cover, which is located at an end of the bakelite powder body away from the first end cover, and the second end cover is detachably connected to the bakelite powder body.

6. The low-cost commutator according to claim 5, characterized in that: Each commutator segment has a plurality of third slots on the side away from the first end cover, and the second end cover has a plurality of second protrusions on one end close to the bakelite powder body. When the second end cover is connected to the bakelite powder body, the second protrusions are inserted into the corresponding third slots.

7. The low-cost commutator according to claim 5, characterized in that: The end of the second end cover away from the bakelite powder body also has a containing cavity, and a plurality of pads are arranged in the containing cavity.

8. The low-cost commutator according to claim 7, characterized in that: The low-cost commutator further comprises a sealing cover, which is detachably connected to the second end cover and seals the cavity opening of the accommodating cavity.

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