Anti-pseudo soldering commutator
By setting a bending section and a material discharge groove in the hook section of the commutator to limit the movement of the enameled wire, the problem of wire movement during soldering is solved, thus achieving the effect of preventing cold solder joints and reducing production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2026-03-03
AI Technical Summary
In the soldering process of existing commutators, the position of the enameled wire is prone to shifting, resulting in insufficient soldering and cold solder joints.
Design a commutator to prevent cold solder joints, wherein the hook portion of the commutator segment is folded in half along its length to form first and second bent sections, and limiting is provided on both sides of the enameled wire. A material removal groove is provided to facilitate soldering, and the end of the second bent section is rounded to avoid scratching the enameled wire.
It effectively reduces the movement of enameled wires during soldering, improves soldering quality, avoids cold solder joints, and has a simple structure and low cost.
Smart Images
Figure CN223967488U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of commutator technology, and more specifically to a commutator that prevents poor soldering. Background Technology
[0002] The commutator is an important component of the armature of DC motors and AC commutator motors. Each copper plate is connected to several armature winding elements. When the armature rotates, the copper plates successively contact the fixed brushes. In existing motors, the coil is connected to the commutator segments by soldering the enameled wire at one end of the coil to the commutator segments.
[0003] There is a commutator, such as Figure 1 As shown, the device includes a bakelite powder body 90 and several commutator segments 91. Each commutator segment 91 is embedded within the bakelite powder body 90, and each commutator segment 91 has a hook portion 911. Two enameled wires 92 are stacked on each hook portion 911. During soldering, the soldering operator first arranges the ends of the two enameled wires 92 horizontally and aligns them with one side of the hook portion 911. Then, a soldering gun is used to coat the two enameled wires 92 with solder and pile them onto the hook portion 911. However, because the enameled wires 92 are not limited or pre-fixed when placed on the hook portion 911, their positions are prone to shifting during soldering, resulting in insufficient soldering and incomplete coating of the enameled wires 92 by the solder, i.e., a cold solder joint.
[0004] Therefore, there is a need for a commutator that can pre-fix the enameled wire and effectively reduce the movement of the enameled wire during soldering to prevent poor soldering. Summary of the Invention
[0005] The main objective of this application is to provide a commutator for preventing cold solder joints. The commutator includes a bakelite powder body and several commutator segments. The commutator segments are arranged in a ring array and fitted into the side of the bakelite powder body. Each commutator segment includes a hook section. The middle section of the hook section in the length direction is folded to form a first bending section, a transition section, and a second bending section. The first bending section and the second bending section are spaced a predetermined distance apart. Two enameled wires are threaded through each hook section, and the two sides of the two enameled wires abut against the first bending section and the second bending section, respectively. The middle section of the hook section in the width direction has a material removal groove. By limiting the enameled wires on both sides of the first bending section and the second bending section, the advantages of pre-fixing the enameled wires and effectively reducing the movement of the enameled wires during soldering are achieved.
[0006] Another objective of this application is to provide a commutator for preventing poor soldering, wherein the end of the second bending section away from the transition section has a rounded corner, and when the enameled wire passes between the first bending section and the second bending section, the rounded corner abuts against the side wall of the enameled wire, thereby preventing the end of the second bending section from scratching the enameled wire by setting the rounded corner.
[0007] To achieve at least one of the above-mentioned objectives, this application provides a commutator for preventing cold solder joints, wherein the commutator for preventing cold solder joints includes:
[0008] Bakelite powder body; and
[0009] A plurality of commutator segments are arranged in a ring array and fitted into the side of the bakelite powder body. Each commutator segment includes a hook section. The middle section of the hook section in the length direction is folded in half to form a first bending section, a transition section and a second bending section. The first bending section and the second bending section are spaced apart by a predetermined distance. Two enameled wires are threaded through each hook section, and the two sides of the two enameled wires abut against the first bending section and the second bending section respectively. The middle section in the width direction of the hook section has a material discharge groove.
[0010] In one or more embodiments of this application, each commutator segment further includes a brush contact portion, one end of which is fixedly connected to the end of the first bent segment away from the transition segment, and the bottom of the brush contact portion has a protrusion that is embedded in the bakelite body.
[0011] In one or more embodiments of this application, the middle section of the protrusion has a through groove.
[0012] In one or more embodiments of this application, each end of the protrusion has an extension end, and the anti-fraud commutator further includes two anti-detachment rings, which are respectively located at both ends of the protrusion and sleeved on the outside of the corresponding extension ends.
[0013] In one or more embodiments of this application, the anti-detachment ring is made of an insulating material.
[0014] In one or more embodiments of this application, the end of the second bending segment away from the transition segment has a rounded corner, and when the enameled wire passes between the first bending segment and the second bending segment, the rounded corner abuts against a side wall of the enameled wire.
[0015] In one or more embodiments of this application, the end of the second bending segment away from the transition segment also has a clearance notch, and the clearance notch and the fillet are located on two sides of the second bending segment, respectively.
[0016] In this embodiment, the anti-cold solder joint commutator includes a bakelite powder body and a plurality of commutator segments. The commutator segments are embedded in the side of the bakelite powder body in a ring array. Each commutator segment includes a hook section. The middle section of the hook section in the length direction is folded to form a first bending section, a transition section and a second bending section. The first bending section and the second bending section are spaced apart by a predetermined distance. Two enameled wires are threaded through each hook section, and the two sides of the two enameled wires abut against the first bending section and the second bending section respectively. The middle section of the hook section in the width direction has a material removal groove. By limiting the enameled wires on both sides of the enameled wires by the first bending section and the second bending section, the advantages of pre-fixing the enameled wires and effectively reducing the movement of the enameled wires during soldering are achieved. Attached Figure Description
[0017] These and / or other aspects and advantages of this application will become clearer and more readily understood from the following detailed description of embodiments of this application taken in conjunction with the accompanying drawings, wherein:
[0018] Figure 1 The diagram illustrates the structure of a conventional commutator.
[0019] Figure 2 The figure shows a structural schematic diagram of a commutator for preventing cold solder joints according to this application at a certain angle;
[0020] Figure 3 The figure shows a structural schematic diagram of a commutator for preventing cold solder joints from being applied for in this application from another angle.
[0021] Figure 4 The diagram shows... Figure 2 A magnified view of a portion of point C. Detailed Implementation
[0022] The terms and words used in the following specification and claims are not limited to their literal meaning, but are used solely by the inventors to enable a clear and consistent understanding of this application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of this application is provided for illustrative purposes only and not for the purpose of limiting the application as defined in the appended claims and their equivalents.
[0023] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.
[0024] While ordinal numbers such as "first," "second," etc., will be used to describe various components, there is no limitation on which components are used 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 similarly, 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 of the associated listed items.
[0025] The terminology used herein is for the purpose of describing various embodiments only and is not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will also be understood that the terms “comprising” and / or “having” as 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.
[0026] Indicative anti-cold solder joint commutator, for reference. Figures 2 to 4 According to a preferred embodiment of the present invention, a commutator for preventing cold solder joints is provided, such as... Figure 2 and Figure 3 As shown, the device includes a bakelite powder body 10 and a plurality of commutator segments 20. The commutator segments 20 are arranged in a ring array and are injection molded to fit the side of the bakelite powder body 10. Each commutator segment 20 includes a hook section 201. The middle section of the hook section 201 in the length direction is folded to form a first bending section 2011, a transition section 2012 and a second bending section 2013. The first bending section 2011 and the second bending section 2013 are spaced apart by a predetermined distance. Two enameled wires 30 are threaded through each hook section 201, and the two sides of the two enameled wires 30 abut against the first bending section 2011 and the second bending section 2013, respectively. The middle section of the hook section 201 in the width direction has a material removal groove 2014.
[0027] It should be noted that by bending the hook portion 201 and limiting the enameled wire 30 on both sides by the first bending segment 2011 and the second bending segment 2013, during soldering, the soldering operator only needs to pass the enameled wire 30 through one side of the hook portion 201 between the first bending segment 2011 and the second bending segment 2013. The movement of the enameled wire 30 along the length of the commutator segment 20 is then restricted. Subsequently, by providing the material removal groove 2014 on the hook portion 201, the soldering gun can be inserted between the material removal grooves 2014, and the enameled wire 30 exposed at the material removal grooves 2014 can be soldered onto the commutator segment 20. It is evident that, compared to the prior art, this application, by providing a limit on the other end of the enameled wire 30 by setting the second bending segment 2013, has the advantage of pre-fixing the enameled wire and effectively reducing the movement of the enameled wire during soldering.
[0028] Furthermore, to prevent the end of the second bent segment 2013 from scratching the enameled wire 30, such as... Figure 4 As shown, the second bending segment 2013 has a rounded corner 20131 at one end away from the transition segment 2012. When the enameled wire 30 passes between the first bending segment 2011 and the second bending segment 2013, the rounded corner 20131 abuts against a side wall of the enameled wire 30.
[0029] Furthermore, in the embodiments of this application, such as Figure 2 As shown, each of the commutator segments 20 further includes a brush contact portion 202, one end of which is fixedly connected to the end of the first bent segment 2011 that is away from the transition segment 2012. The bottom of the brush contact portion 202 has a protrusion 2021, which is embedded in the bakelite powder body 10.
[0030] Furthermore, to prevent the second bent segment 2013 from abutting against the brush contact portion 202 before being bent to the predetermined angle, such as Figure 4 As shown, the second bending segment 2013 also has a clearance notch 20132 at one end away from the transition segment 2012. The clearance notch 20132 and the rounded corner 20131 are located on two sides of the second bending segment 2013, respectively.
[0031] Furthermore, to strengthen the connection between the protrusion 2021 and the bakelite powder body 10, such as... Figure 2 As shown, the protrusion 2021 has a through groove 20211 in its middle section. It should be noted that during injection molding, bakelite powder is used to fill the through groove 20211.
[0032] Furthermore, to reduce the risk of the commutator 20 detaching from the bakelite powder body 10, such as... Figure 2 As shown, both ends of the protrusion 2021 have an extension end 20212. The anti-fraud commutator also includes two anti-detachment rings 40. The two anti-detachment rings 40 are located at both ends of the protrusion 2021 and are sleeved on the outside of the corresponding extension end 20212.
[0033] It should be noted that, since the commutator segments 20 are arranged in a ring array, the anti-detachment ring 40 abuts against the protrusion 2021 on each of the commutator segments 20.
[0034] Furthermore, to prevent short circuits between adjacent commutator segments 20, the anti-detachment ring 40 is made of an insulating material, including but not limited to ceramic.
[0035] In summary, the anti-cold solder joint commutator based on the embodiments of this application is explained, which provides advantages such as pre-fixing of the enameled wire and effectively reducing the movement of the enameled wire during soldering.
[0036] It is worth mentioning that, in the embodiments of this application, the anti-cold soldering commutator has a simple structure, does not involve complex manufacturing processes or expensive materials, and has high economic efficiency. At the same time, for manufacturers, the anti-cold soldering commutator provided in this application is easy to produce and has low cost, which is more conducive to controlling production costs and further facilitates product promotion and use.
[0037] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from these principles.
Claims
1. A commutator for preventing cold solder joints, characterized in that: The anti-cold solder joint commutator includes Bakelite powder body; and A plurality of commutator segments are arranged in a ring array and fitted into the side of the bakelite powder body. Each commutator segment includes a hook section. The middle section of the hook section in the length direction is folded in half to form a first bending section, a transition section and a second bending section. The first bending section and the second bending section are spaced apart by a predetermined distance. Two enameled wires are threaded through each hook section, and the two sides of the two enameled wires abut against the first bending section and the second bending section respectively. The middle section in the width direction of the hook section has a material discharge groove.
2. The anti-cold soldering commutator according to claim 1, characterized in that: Each of the commutator segments further includes a brush contact portion, one end of which is fixedly connected to the end of the first bent segment away from the transition segment, and the bottom of the brush contact portion has a protrusion that is embedded in the bakelite powder body.
3. The anti-cold soldering commutator according to claim 2, characterized in that: The middle section of the protrusion has a through groove.
4. The anti-cold soldering commutator according to claim 3, characterized in that: Both ends of the protrusion have an extension end. The anti-fraud commutator also includes two anti-detachment rings, which are located at both ends of the protrusion and sleeved on the outside of the corresponding extension ends.
5. The anti-cold soldering commutator according to claim 4, characterized in that: The anti-detachment ring is made of insulating material.
6. The anti-cold soldering commutator according to any one of claims 1-5, characterized in that: The second bend has a rounded corner at one end away from the transition section. When the enameled wire passes between the first bend and the second bend, the rounded corner abuts against a side wall of the enameled wire.
7. The anti-cold soldering commutator according to claim 6, characterized in that: The second bending segment also has a clearance notch at one end away from the transition segment, and the clearance notch and the rounded corner are located on two sides of the second bending segment, respectively.