Commutator segment for commutator

Abstract

The utility model relates to the technical field of commutator accessories, in particular to a commutator segment for a commutator, which comprises a contact piece combination and a winding pin, the contact piece combination comprises a passing groove and an anti-drop groove, the passing groove extends upwards for a preset distance from the bottom of the contact piece combination and is communicated with the anti-drop groove, and the winding pin is connected with the passing groove. The width of the anti-disengaging groove is larger than that of the passing groove, the passing groove and the anti-disengaging groove both penetrate from one end of the contact piece combination to the other end of the contact piece combination, the winding pin comprises a matching part, a winding part, a connecting part and an embedding part used for being embedded into the bakelite powder body, the winding part is located at one end of the matching part, and the connecting part is located at the other end of the matching part. The connecting part is located between the matching part and the embedding part, the contact piece combination is arranged on the matching part in a sliding mode through the anti-disengagement groove, and by means of the design that the contact piece combination and the winding pins are separated, the advantages that the contact faces can be independently replaced, and the replacement cost is low are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of commutator accessories, and more specifically to a commutator segment for a commutator. Background Art

[0002] The commutator is an important component on the armature of the motor, including a commutator body and a plurality of commutator segments. The commutator body is made of insulating material, and the commutator segments are fixedly mounted on the commutator body in a circular array arrangement. When the motor is working, the commutator segments are in contact with the brushes. After long-term use, the commutator segments and the brushes are prone to wear.

[0003] Our company currently has a commutator segment, such as Figure 1 As shown, it includes a contact surface 90, a winding portion 91 and an embedding portion 92. The contact surface 90 contacts the brush, the winding portion 91 is used to wind the coil, and the embedding portion 92 is used to embed with the commutator body. The contact surface 90, the winding portion 91 and the embedding portion 92 are integrally manufactured. When the commutator body rotates circumferentially, the commutator segments arranged in an annular shape rotate circumferentially and make the contact surface 90 contact the external brush. However, since the contact surface 90, the winding portion 91 and the embedding portion 92 are integrally designed, when the contact surface 90 is worn and needs to be replaced, the embedding portion 92 is embedded in the commutator body, and the entire commutator needs to be replaced, which has a high cost of use.

[0004] Therefore, there is a need to provide a commutator segment for a commutator whose contact surface can be replaced individually and the replacement cost is low. Summary of the invention

[0005] The main purpose of the present application is to provide a commutator segment for a commutator, wherein the commutator segment for the commutator comprises a contact segment assembly and a winding pin, the contact segment assembly comprises a through slot and an anti-slip groove, the through slot extends upward from the bottom of the contact segment assembly by a predetermined distance and is connected to the anti-slip groove, the slot width of the anti-slip groove is greater than the slot width of the through slot, the through slot and the anti-slip groove both penetrate from one end of the contact segment assembly to the other end of the contact segment assembly, the winding pin comprises a matching portion, a winding portion, a connecting portion and an embedding portion for embedding in a bakelite powder body, the winding portion is located at one end of the matching portion, the connecting portion is located between the matching portion and the embedding portion, the contact segment assembly is slidably arranged on the matching portion through the anti-slip groove, and the contact surface can be replaced separately and the replacement cost is low by designing the contact segment assembly and the winding pin separately.

[0006] Another object of the present application is to provide a commutator segment for a commutator, wherein the contact segment assembly comprises a front contact segment and a rear contact segment, and both the front contact segment and the rear contact segment are slidably mounted on the mating portion, and by designing the contact segment assembly as a split piece, the front or rear contact segment can be partially replaced.

[0007] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a commutator segment for a commutator, wherein the commutator segment for a commutator comprises:

[0008] a contact piece assembly, the contact piece assembly comprising a through groove and an anti-slip groove, the through groove extending upward from the bottom of the contact piece assembly by a predetermined distance and communicating with the anti-slip groove, the groove width of the anti-slip groove being greater than the groove width of the through groove, the through groove and the anti-slip groove both extending from one end of the contact piece assembly to the other end of the contact piece assembly; and

[0009] A winding pin, the winding pin includes a matching portion, a winding portion, a connecting portion and an embedding portion for embedding in the bakelite powder body, the winding portion is located at one end of the matching portion, the connecting portion is located between the matching portion and the embedding portion, and the contact piece assembly is slidably arranged on the matching portion through the anti-slip groove.

[0010] In one or more embodiments of the present application, the embedded portion is two bending pieces, and the middle section of the end portion of the connecting portion away from the mating portion has a dividing groove, and the sum of the groove width of the dividing groove and the thickness of the two bending pieces is equal to the thickness of the connecting portion.

[0011] In one or more embodiments of the present application, the connecting portion has a plurality of through grooves.

[0012] In one or more embodiments of the present application, the contact piece assembly includes a front section contact piece and a rear section contact piece, and both the front section contact piece and the rear section contact piece are slidably mounted on the matching portion.

[0013] In one or more embodiments of the present application, a length dimension of a side of the connecting portion close to the embedded portion is smaller than a length dimension of the matching portion.

[0014] In one or more embodiments of the present application, the through groove and the anti-slip groove together form a T-shaped groove, and when the matching portion extends into the T-shaped groove, each side surface of the matching portion is in contact with the side surface of the T-shaped groove.

[0015] In one or more embodiments of the present application, the winding portion has a plurality of winding grooves.

[0016] In an embodiment of the present application, a commutator segment for a commutator includes a contact segment assembly and a winding pin, the contact segment assembly includes a through slot and an anti-slip slot, the through slot extends upward from the bottom of the contact segment assembly by a predetermined distance and is connected to the anti-slip slot, the slot width of the anti-slip slot is greater than the slot width of the through slot, the through slot and the anti-slip slot both extend from one end of the contact segment assembly to the other end of the contact segment assembly, the winding pin includes a mating portion, a winding portion, a connecting portion and an embedding portion for embedding in a bakelite powder body, the winding portion is located at one end of the mating portion, the connecting portion is located between the mating portion and the embedding portion, the contact segment assembly is slidably arranged on the mating portion through the anti-slip slot, and by separating the contact segment assembly and the winding pin, compared with the prior art, it has the advantages that the contact surface can be replaced separately and the replacement cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 The figure shows a structural schematic diagram of an existing commutator segment;

[0019] Figure 2 The figure shows a schematic diagram of the structure of a disassembled commutator;

[0020] Figure 3 The figure shows a schematic diagram of the structure of the installation slot of the detachable commutator;

[0021] Figure 4 The figure shows a schematic structural diagram of a commutator segment for a commutator;

[0022] Figure 5 The figure shows a schematic diagram of the structure of the contact piece assembly;

[0023] Figure 6 The figure shows the structural schematic diagram of the wire-wrap pin. DETAILED DESCRIPTION

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Application Overview

[0029] Since the contact surface, the winding portion and the embedded portion are designed as one piece, when the contact surface is worn and needs to be replaced, the entire commutator needs to be replaced because the embedded portion is embedded in the commutator body, resulting in high cost.

[0030] Based on the above technical problems, the present application proposes a commutator segment for a commutator, wherein the commutator segment for the commutator has a simple structure, does not involve complicated manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the commutator segment for the 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.

[0031] Schematic commutator segments,

[0032] refer to Figures 4 to 6 According to a preferred embodiment of the utility model, a commutator segment for a commutator is used as follows Figure 2 and Figure 3 In the disassembled commutator shown, the disassembled commutator further comprises a bakelite powder body 80 and two end covers 81 . The bakelite powder body 80 has a plurality of mounting grooves 801 , and each of the mounting grooves 801 is provided with a commutator segment for the commutator.

[0033] like Figure 4 As shown, the commutator segment includes a contact segment assembly 10 and a winding pin 20. The contact segment assembly 10 is used to contact the fixed brush of the motor. The winding pin 20 has two functions: one is used to wind the coil; the other is fixedly connected to the bakelite powder body 80 and serves as the base of the contact segment assembly 10.

[0034] Specifically, Figure 5 As shown, the contact piece assembly 10 includes a contact surface 101, a through groove 102 and an anti-slip groove 103, wherein the contact surface 101 is located at the top of the contact piece assembly 10 and is an arc surface, the through groove 102 extends upward from the bottom of the contact piece assembly 10 by a predetermined distance and communicates with the anti-slip groove 103, the groove width of the anti-slip groove 103 is greater than the groove width of the through groove 102, and the through groove 102 and the anti-slip groove 103 both penetrate from one end of the contact piece assembly 10 to the other end of the contact piece assembly 10. In the embodiment of the present application, the through groove 102 is located in the middle section of the anti-slip groove 103, and the through groove 102 and the anti-slip groove 103 together form a T-shaped groove.

[0035] In addition, if Figure 6 As shown, the winding pin 20 includes a matching portion 201, a winding portion 202, a connecting portion 203 and an embedding portion 204 for embedding into the bakelite powder body 80, the winding portion 202 is located at one end of the matching portion 201, the connecting portion 203 is located between the matching portion 201 and the embedding portion 204, the contact piece assembly 10 is slidably arranged on the matching portion 201 through the anti-slip groove 103, and the matching portion 201 is T-shaped as a whole.

[0036] It should be noted that the connecting portion 203 and the embedding portion 204 are fixedly connected to the bakelite powder body 80 by means of integral injection molding, that is, at this time, the position of the winding pin 20 is fixed relative to the bakelite powder body 80, and the matching portion 201 and the winding portion 202 are both exposed in the installation groove 801. During installation, the assembler extends the contact piece assembly 10 from one end of the installation groove 801 into the matching portion 201, and the contact piece assembly 10 is installed on the matching portion 201. When the two ends of the contact piece assembly 10 are respectively connected to the matching portion 201, the contact piece assembly 10 is fixed to the matching portion 201. When the ends of the matching portion 201 are flush, the two end covers 81 are respectively threadedly connected to the two ends of the bakelite powder body 80. It should be pointed out that when the two end covers 81 are connected to the bakelite powder body 80, the two end covers 81 are respectively abutted against the two ends of the contact piece assembly 10, restricting the contact piece assembly 10 from detaching from the mounting groove 801 in the axial direction of the bakelite powder body 80; in addition, since the matching portion 201 is stuck in the T-slot, the contact piece assembly 10 is restricted by the matching portion 201 in the circumferential direction of the bakelite powder body 80 and cannot detach.

[0037] It should be emphasized that, since only the contact piece assembly 10 is in contact with the external brush during use, the winding portion 202 of the winding pin 20 is not subject to wear during this process. Therefore, when the contact piece assembly 10 is worn, the winding portion 202 is usually intact. In the prior art, since the contact piece assembly 10 and the winding portion 202 are integrally formed, when replacing the contact piece assembly 10, the winding portion 202, which is still in good condition, needs to be replaced at the same time, and the replacement cost is high. In the embodiment of the present application, by designing the contact piece assembly 10 and the winding portion 202 as separate bodies, after the contact piece assembly 10 is worn, only the contact piece assembly 10 needs to be replaced. Compared with the prior art, it has the advantages that the contact surface 101 can be replaced separately and the replacement cost is low.

[0038] Furthermore, if Figure 6 As shown, the embedded portion 204 is two bending pieces, and the middle section of the end portion of the connecting portion 203 away from the matching portion 201 has a dividing groove 2031, and the sum of the groove width of the dividing groove 2031 and the thickness of the two bending pieces is equal to the thickness of the connecting portion 203. The two bending pieces are formed by bending at a predetermined angle in opposite directions after being divided by the dividing groove 2031 through the connecting portion 203.

[0039] Furthermore, in order to strengthen the connection strength between the winding pin 20 and the bakelite powder body 80, as Figure 6 As shown, the connecting portion 203 has a plurality of through grooves 2032. In the embodiment of the present application, the number of the through grooves is two, and the through grooves are rectangular grooves. It should be noted that when the connecting portion 203 and the bakelite powder body 80 are integrally formed by injection molding, the bakelite powder fills the rectangular groove and provides a limit for the winding pin 20.

[0040] It should also be noted that when the relative positions of the commutator and the brush are installed improperly, or there is a phenomenon of inconsistent wear at the front and rear ends of the contact piece assembly 10, that is, the wear rate at one end of the contact piece assembly 10 is higher than the wear rate at the other end, at this time, in addition to adjusting the positions of the commutator and the brush, the contact piece assembly 10 must be replaced as a whole.

[0041] In order to reduce the replacement cost, in the present utility model, if Figure 4As shown, the contact piece assembly 10 includes a front section contact piece 1014 and a rear section contact piece 1015, and the front section contact piece 1014 and the rear section contact piece 1015 are both slidably mounted on the matching portion 201. More specifically, the front section contact piece 1014 and the rear section contact piece 1015 have the same length and the same cross-sectional shape, and are only arranged at different positions on the matching portion 201. When the contact piece assembly 10 is arranged on the matching portion 201, one end of the front section contact piece 1014 and the rear section contact piece 1015 abut against each other, and the other ends of the front section contact piece 1014 and the rear section contact piece 1015 abut against the corresponding end cap 81, respectively, and the front section contact piece 1014 is located at one end of the winding pin 20 having the winding portion 202.

[0042] Furthermore, in order to prevent the ends of the connecting portion 203 and the embedded portion 204 from being exposed to the bakelite powder body 80, as shown in FIG. Figure 4 As shown, the length dimension of the connecting portion 203 on one side close to the embedding portion 204 is smaller than the length dimension of the matching portion 201 .

[0043] Furthermore, in order to prevent the coil on the winding portion 202 from moving, Figure 4 As shown, the winding portion 202 has a plurality of winding grooves 2021 .

[0044] In summary, the commutator segments for commutators based on the embodiments of the present application are explained, which provide the commutator segments with advantages such as contact surfaces that can be replaced individually and low replacement costs.

[0045] It is worth mentioning that in the embodiment of the present application, the commutator segments for the commutator have a simple structure, do not involve complex manufacturing processes and expensive materials, and have high economic efficiency. At the same time, for manufacturers, the commutator segments for the commutator provided by the present application are easy to produce and low in 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 commutator segment for a commutator, characterized in that: The commutator segment comprises a contact piece assembly, the contact piece assembly comprising a through groove and an anti-slip groove, the through groove extending upward from the bottom of the contact piece assembly by a predetermined distance and communicating with the anti-slip groove, the groove width of the anti-slip groove being greater than the groove width of the through groove, the through groove and the anti-slip groove both extending from one end of the contact piece assembly to the other end of the contact piece assembly; and A winding pin, the winding pin includes a matching portion, a winding portion, a connecting portion and an embedding portion for embedding in the bakelite powder body, the winding portion is located at one end of the matching portion, the connecting portion is located between the matching portion and the embedding portion, and the contact piece assembly is slidably arranged on the matching portion through the anti-slip groove.

2. The commutator segment for a commutator according to claim 1, characterized in that: The embedded part is two bent pieces, and the middle section of one end of the connecting part away from the matching part has a dividing groove, and the sum of the groove width of the dividing groove and the thickness of the two bent pieces is equal to the thickness of the connecting part.

3. The commutator segment for a commutator according to claim 2, characterized in that: The connecting portion has a plurality of through grooves.

4. The commutator segment for a commutator according to claim 3, characterized in that: The contact piece assembly comprises a front section contact piece and a rear section contact piece, and both the front section contact piece and the rear section contact piece are slidably mounted on the matching portion.

5. The commutator segment for a commutator according to claim 4, characterized in that: The length dimension of a side of the connecting portion close to the embedding portion is smaller than the length dimension of the matching portion.

6. The commutator segment for a commutator according to claim 5, characterized in that: The through groove and the anti-slip groove together form a T-shaped groove. When the matching portion extends into the T-shaped groove, each side surface of the matching portion is in contact with the side surface of the T-shaped groove.

7. The commutator segment for a commutator according to claim 6, characterized in that: The winding portion has a plurality of winding grooves.

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