Split type commutator segment
By designing a split reversing piece with slidable mounting grooves and inserts, the problem of too small distance between the winding parts in the commutator is solved, and the winding parts are extended and conveniently assembled, reducing production costs.
Patent Information
- Application Number
- CN202420917486.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-04-28
AI Technical Summary
The distance between the winding parts of the commutator plates in the existing plane commutator is too small, resulting in inconvenient assembly.
A split reversing sheet is designed, including a reversing sheet body with a slidable mounting groove and an insert. The insert can be pulled out and extended when wound, and can be realized with the reversing sheet body through a bend and an internal expansion pin. jammed.
The winding part is extractable and extended, which improves the convenience of winding, simplifies the assembly process, and reduces production costs and manufacturing complexity.
Smart Images
Figure CN222301055U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of commutator accessories, and more specifically to a split commutator segment. Background Art
[0002] The commutator is an important part of the motor. When the armature rotates, the commutator segments on the commutator successively contact the fixed brushes. The commutator includes a planar commutator, in which the commutator segments in the commutator are arranged in a ring shape on the end face of the commutator body.
[0003] The patent document (CN113991377B) discloses a planar commutator, including a bakelite powder matrix and a plurality of commutator segments, each of which has a fixedly connected winding portion, the commutator segments are arranged in a ring shape on the end surface of the bakelite powder matrix, and each of the commutator segments is embedded in the bakelite powder matrix, and the winding portion is used to wind the coil. However, since the number of commutator segments arranged in the circumferential direction of the bakelite powder matrix is large, the distance between two adjacent winding portions is small, and it is inconvenient for the assembler to wind the coil on the corresponding winding portion.
[0004] Therefore, there is a need to provide a split commutator segment with a winding portion that can be pulled out and extended and more convenient for winding. Summary of the invention
[0005] The main purpose of the present application is to provide a split commutator segment, which is arranged in a ring shape on the end face of the commutator body, wherein the split commutator segment includes a commutator segment body and an insert, the top surface and the bottom surface of the commutator segment body respectively have a contact portion and an embedded portion, one end of the commutator segment body has a mounting groove with an opening, one end of the insert is slidably arranged in the mounting groove, and the other end of the insert has a winding portion. By sliding the insert in the mounting groove, the insert can be pulled out during winding, and after winding, the insert can be pressed back to a predetermined position. Compared with the prior art, the present application has the advantages that the winding portion can be pulled out and extended, and winding is more convenient.
[0006] Another object of the present application is to provide a split commutator segment, wherein both side walls of the mounting groove have a plurality of slots, the end of the insert facing away from the winding portion has two spaced-apart bending portions, and the two bending portions have a plurality of convex teeth on opposite sides thereof, the convex teeth correspond one-to-one to the slots, each of the convex teeth is engaged with or separated from the corresponding slot, and the insertion segment and the commutator segment body are engaged by engaging the convex teeth into the slots.
[0007] Another object of the present application is to provide a split commutator segment, wherein the split commutator segment also includes an inner expansion pin, which is slidably arranged on the insert and extends between the two bent portions. The maximum radial dimension of the inner expansion pin is greater than the minimum spacing between the two bent portions. By pressing the inner expansion pin in, the bent portions are bent in opposite directions and the convex teeth are snapped into the corresponding slots.
[0008] In order to achieve at least one of the above-mentioned invention purposes, the present application provides a split commutator segment, which is arranged in a ring shape on the end surface of the commutator body, wherein the split commutator segment comprises:
[0009] a commutator segment body, wherein the top surface and the bottom surface of the commutator segment body respectively have a contact portion and an embedding portion, and one end of the commutator segment body has a mounting groove with an opening; and
[0010] An inserting piece, one end of which is slidably disposed in the mounting groove, and the other end of which has a winding portion.
[0011] In one or more embodiments of the present application, both side walls of the mounting groove have a plurality of slots, the end of the insert facing away from the winding portion has two spaced-apart bending portions, and the two bending portions have a plurality of convex teeth on opposite sides thereof, the convex teeth correspond one-to-one to the slots, and each of the convex teeth is engaged with or separated from the corresponding slot.
[0012] In one or more embodiments of the present application, the two bending portions have a narrowing slope on one side facing each other, and the distance between the two bending portions gradually decreases from one end of the insert close to the winding portion to the other end.
[0013] In one or more embodiments of the present application, the split commutator segment further includes an inner expansion pin, which is slidably disposed on the insert and extends between the two bending portions, and the maximum radial dimension of the inner expansion pin is greater than the minimum spacing between the two bending portions.
[0014] In one or more embodiments of the present application, the two bending portions have a step on one side facing each other, the two steps are coplanar, and the spacing between the two bending portions at the steps is smaller than the maximum radial dimension of the inner expansion pin.
[0015] In one or more embodiments of the present application, the insert has two clamping grooves, and the two clamping grooves are located at one end of the bending portion close to the winding portion.
[0016] In one or more embodiments of the present application, one side of the two bending portions facing each other has a bending notch, and the bending notch is located at one end of the bending portion close to the winding portion.
[0017] In one or more embodiments of the present application, one end of the two bending portions facing away from the winding portion has a first chamfer.
[0018] In one or more embodiments of the present application, each of the protruding teeth has a second chamfer.
[0019] In an embodiment of the present application, a split commutator segment includes a commutator segment body and an insert. The top surface and the bottom surface of the commutator segment body respectively have a contact portion and an embedded portion. One end of the commutator segment body has a mounting groove with an opening. One end of the insert is slidably disposed in the mounting groove. The other end of the insert has a winding portion. By sliding the insert in the mounting groove, the insert can be pulled out during winding. After winding, the insert can be pressed back to a predetermined position. Compared with the prior art, the winding portion can be pulled out and extended, making winding more convenient. 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 schematic diagram of the split commutator segment being installed on the commutator body;
[0022] Figure 2 The figure shows a structural schematic diagram of a split commutator segment of the utility model;
[0023] Figure 3 The figure shows a schematic diagram of the structure of the commutator segment body;
[0024] Figure 4 The figure shows a schematic diagram of the structure of the insert;
[0025] Figure 5 The figure shows a schematic diagram of the structure when the internal expansion pin is hidden in the sliding hole of the insert. DETAILED DESCRIPTION
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] Application Overview
[0031] Since a large number of the commutator segments are arranged in the circumferential direction of the bakelite powder substrate, the distance between two adjacent winding parts is small, which makes it inconvenient for assemblers to wind the coils on the corresponding winding parts.
[0032] Based on the above technical problems, the present application proposes a split commutator segment, wherein the split commutator segment 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 split commutator segment 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.
[0033] Schematic split commutator segment,
[0034] refer to Figures 1 to 5 According to a preferred embodiment of the utility model, a split commutator segment is Figure 1 As shown, it is arranged in a ring shape on the end face of the commutator body 90. Specifically, the material of the commutator body 90 is bakelite powder. One end face of the commutator body 90 has a plurality of ring-shaped embedded grooves 901. Each of the embedded grooves 901 is embedded with a split commutator segment. An insulating member 91 is also embedded between two adjacent split commutator segments. The material of the insulating member 91 includes but is not limited to mica.
[0035] Furthermore, if Figure 2As shown, the split commutator segment includes a commutator segment body 10 and an insert 20, the top surface and the bottom surface of the commutator segment body 10 respectively have a contact portion 101 and an embedding portion 102, one end of the commutator segment body 10 has a mounting groove 103 with an opening, one end of the insert 20 is slidably disposed in the mounting groove 103, and the other end of the insert 20 has a winding portion 201.
[0036] It should be noted that when the motor is working, the contact portion 101 contacts the brush of the motor, the embedding portion 102 is integrally injection molded with the commutator body 90 to embed the commutator body 90 on the commutator body 90, and the winding portion 201 winds the coil.
[0037] It should also be noted that by sliding the insert 20 on the commutator segment body 10, when winding the coil on the winding portion 201, the assembler can first pull out the insert 20 a predetermined distance in the direction away from the central axis of the commutator body 90. Then, the winding portion 201 on the pulled-out insert 20 is spaced apart from the winding portions 201 of the adjacent inserts 20 on both sides, so that it is easier for the assembler to wind the coil on the winding portion 201. Subsequently, the insert 20 is pressed back into the mounting groove 103 to expose the winding portion 201. It is obvious that compared with the prior art in which the insert 20 and the commutator segment body 10 are integrally formed, and the spacing between the winding portions 201 on two adjacent commutator segment bodies 10 is constant, the embodiment of the present application enables the insert 20 to be slidably arranged on the commutator segment body 10 so that the insert 20 can be pulled out during winding and the spacing between the two adjacent winding portions 201 can be increased, which has the advantages that the winding portion can be pulled out and extended, making winding more convenient.
[0038] Furthermore, in order to fix the position of the insert 20 in the mounting groove 103 after the winding portion 201 has wound the coil, as shown in FIG. Figure 3 and Figure 4 As shown, both side walls of the mounting groove 103 have a plurality of slots 1031, and the end of the insert 20 away from the winding portion 201 has two spaced apart bending portions 202, and the two sides of the two bending portions 202 opposite to each other have a plurality of convex teeth 2021, and the convex teeth 2021 correspond one-to-one to the slots 1031, and each of the convex teeth 2021 is engaged with or separated from the corresponding slot 1031.
[0039] It should be noted that when each of the protruding teeth 2021 is inserted into the corresponding slot 1031, the insert 20 is engaged with the commutator segment body 10. It should also be noted that, under normal conditions, the maximum spacing between the two oppositely disposed protruding teeth 2021 on the two bending portions 202 is less than or equal to the slot width of the mounting slot 103, and the protruding teeth 2021 are separated from the corresponding slot 1031; when the two bending portions 202 are bent at a predetermined angle in opposite directions, each of the protruding teeth 2021 extends into the corresponding slot 1031, and the insert 20 is engaged with the commutator segment body 10.
[0040] Furthermore, in order to realize the selective bending of the two bending portions 202, as Figure 4 As shown, the two bending portions 202 have a narrowing slope 2022 on one side facing each other, and the distance between the two bending portions 202 gradually decreases from one end of the insert 20 close to the winding portion 201 to the other end.
[0041] In addition, if Figure 5 As shown, the split commutator segment further includes an inner expansion pin 30 , which is slidably disposed on the insert 20 and extends between the two bending portions 202 , and the maximum radial dimension of the inner expansion pin 30 is greater than the minimum spacing between the two bending portions 202 .
[0042] Specifically, Figure 4 As shown, the insert 20 has a sliding hole 203, the sliding hole 203 passes through the winding portion 201, and the inner expansion pin 30 is slidably disposed in the sliding hole 203; in addition, as shown Figure 5 As shown, the internal expansion pin 30 includes a first column 301 and a second column 302. The second column 302 is arranged at the end of the first column 301 and is fixedly connected to the first column 301 by welding. The maximum radial dimension of the second column 302 is greater than the maximum radial dimension of the first column 301, and the maximum radial dimension of the second column 302 is greater than the minimum spacing between the two bending portions 202. The first column 301 is slidably arranged in the sliding hole 203.
[0043] It should be noted that, refer to Figure 5, assuming that the internal expansion pin 30 is hidden in the sliding hole 203 at this time, the internal expansion pin 30 does not contact the two bent portions 202, and the two bent portions 202 are in an undeformed state and can slide freely in the installation groove 103. At this time, the assembler can pull out the insert 20 and wind the coil on the winding portion 201. After the coil is wound, the assembler can push the insert 20 back into the installation groove 103, and push the first column 301 of the internal expansion pin 30 and make the second column 302 of the internal expansion pin 30 extend between the two bent portions 202. Since the maximum radial dimension of the second column 302 is greater than the minimum spacing between the two bent portions 202, at a certain moment, the two bent portions 202 are subjected to force and bend in opposite directions, and the convex teeth 2021 are snapped into the corresponding snap-in grooves 1031, thereby realizing the snap-in connection between the insert 20 and the commutator segment body 10.
[0044] Furthermore, in order to ensure that the inner expansion pin 30 does not fall out of the sliding hole 203 after the protruding teeth 2021 are inserted into the corresponding slots 1031, Figure 4 As shown, the two bending portions 202 have a step 2023 on one side facing each other, the two steps 2023 are coplanar and form a shoulder, and the distance between the two bending portions 202 at the step 2023 is smaller than the maximum radial dimension of the inner expansion pin 30 .
[0045] It should be noted that, when the second column 302 extends into the end of the bending portion 202 having the step 2023 , the end surface of the second column 302 abuts against the step 2023 , and prevents the inner expansion pin 30 from falling out of the sliding hole 203 .
[0046] Furthermore, in order to facilitate clamping and bending of the bending portion 202, as Figure 4 As shown, the insert 20 has two clamping grooves 2024, and the two clamping grooves 2024 are located at one end of the bending portion 202 close to the winding portion 201; in addition, the two bending portions 202 have a bending notch 2025 on one side facing each other, and the bending notch 2025 is located at one end of the bending portion 202 close to the winding portion 201.
[0047] Furthermore, in order to facilitate the two bent portions 202 to extend into the mounting groove 103, as shown in FIG. Figure 4 As shown, one end of the two bending portions 202 away from the winding portion 201 has a first chamfer 2026 .
[0048] Similarly, in order to facilitate the protruding tooth 2021 to be inserted into the slot 1031, Figure 4 As shown, each of the protruding teeth 2021 has a second chamfer 20211 .
[0049] In summary, the split commutator segment according to the embodiment of the present application is explained, which provides the split commutator segment with advantages such as the winding portion can be pulled out and extended, and winding is more convenient.
[0050] It is worth mentioning that in the embodiment of the present application, the split commutator segment 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 split commutator segment 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.
[0051] 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 split commutator segment, arranged in an annular shape on the end face of the commutator body, characterized in that: The split commutator segment comprises A commutator segment body, wherein the top surface and the bottom surface of the commutator segment body respectively have a contact portion and an embedding portion, and one end of the commutator segment body has a mounting groove with an opening; as well as An inserting piece, one end of which is slidably disposed in the mounting groove, and the other end of which has a winding portion.
2. The split commutator segment according to claim 1, characterized in that: Both side walls of the installation groove have a plurality of slots, and the end of the insert away from the winding part has two spaced-apart bending parts, and the two bending parts have a plurality of convex teeth on the opposite sides, and the convex teeth correspond to the slots one by one, and each of the convex teeth is engaged with or separated from the corresponding slot.
3. The split commutator segment according to claim 2, characterized in that: The two bending portions have a narrowing slope on one side facing each other, and the distance between the two bending portions gradually decreases from one end of the insert close to the winding portion to the other end.
4. The split commutator segment according to claim 3 is characterized in that: The split commutator segment further comprises an inner expansion pin, which is slidably disposed on the insert and extends between the two bending portions, and the maximum radial dimension of the inner expansion pin is greater than the minimum spacing between the two bending portions.
5. The split commutator segment according to claim 4, characterized in that: The two bending portions have a step on one side facing each other, the two steps are coplanar, and the spacing between the two bending portions at the steps is smaller than the maximum radial dimension of the inner expansion pin.
6. The split commutator segment according to claim 5, characterized in that: The insert has two clamping grooves, and the two clamping grooves are located at one end of the bending portion close to the winding portion.
7. The split commutator segment according to claim 6, characterized in that: The two bending portions each have a bending notch on one side facing each other, and the bending notch is located at one end of the bending portion close to the winding portion.
8. The split commutator segment according to any one of claims 2 to 7, characterized in that: One end of the two bending portions away from the winding portion has a first chamfer.
9. The split commutator segment according to any one of claims 2 to 7, characterized in that: Each of the protruding teeth has a second chamfer.