A ceramic bead commutator

Abstract

The application discloses a ceramic bead commutator, which comprises a commutating base, ceramic beads and copper sheets. The periphery of the commutating base is surrounded by a plurality of copper sheets, and ceramic beads are arranged between the adjacent copper sheets. Each copper sheet is provided with a concave surface matched with the ceramic beads, and the ceramic beads are in contact with the copper sheets through the concave surface. The ceramic beads are loaded on a ceramic bead loading member, and the ceramic bead loading member is connected with the copper sheets. The ceramic bead loading member is designed in the ceramic bead commutator, so that the ceramic beads provide support and reinforcement for the copper sheets on the circumference of the commutator, greatly reducing the risk of simultaneous separation of the copper sheets on the whole circumference. In the case that the copper sheets are damaged during long-term work of the commutator, the ceramic beads are not easy to fall out, effectively ensuring the overall performance and quality of the commutator.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of commutator manufacturing, and particularly relates to a ceramic bead commutator with a reinforcing ring. BACKGROUND

[0002] The commutator is generally divided into three types of hook type commutator, slot type commutator and end face commutator. In order to strengthen the bonding strength between the hook type commutator copper sheet and the commutator base and improve the mechanical properties and overspeed performance of the hook type commutator product, the hook type commutator often adopts a structure with a reinforcing ring. The reinforcing ring in the existing commutator only fixes the copper sheet. In order to avoid inter-sheet conduction, the reinforcing ring is made of insulating material, and the glass fiber material is currently basically used. However, the reinforcing ring made of glass fiber material has poor high temperature resistance and is prone to deformation at high temperature. Therefore, when the hook type commutator operates at high speed, the outer diameter of the hook type commutator changes greatly and the inter-sheet difference is large due to high temperature and copper sheet positioning during assembly, which seriously affects the working reliability and service life of the hook type commutator. Meanwhile, the cost of the reinforcing ring made of fiber material is also relatively high. Another ceramic bead commutator has better overall performance than the traditional commutator, but it is difficult to assemble and requires manual placement of each ceramic bead between the copper sheets, which is time-consuming and inefficient and has high labor cost. Meanwhile, the copper sheet on the inner circle of the ceramic bead commutator has the risk of falling off and separating, and the quality of the commutator cannot be effectively guaranteed.

[0003] Chinese Patent Publication Nos. CN105811206A, CN105846273A, CN205752917U and CN205790860U all adopt the traditional structure, thereby having the above technical problems. The technical solutions disclosed in Chinese Patent Publication Nos. CN205811235U and CN205811236U are to string a plurality of ceramic beads with a thin rope. Although this kind of technical solution has advantages, it has the problems of complicated ceramic bead processing, complicated stringing and unfirm copper sheet installation. SUMMARY

[0004] In order to solve the above problems in the background art, the application provides a ceramic bead commutator. The ceramic bead commutator is designed with a reinforcing ring, so that the ceramic bead provides support and reinforcement for the copper sheet on the inner circumference of the commutator, greatly reducing the risk of simultaneous separation of the copper sheet on the entire circumference. Meanwhile, in the case that the copper sheet is damaged during long-term operation of the commutator, the ceramic bead is not easy to fall out, effectively guaranteeing the overall performance and quality of the commutator.

[0005] The technical solution adopted by the application to solve the above technical problems is as follows:

[0006] The application discloses a ceramic bead commutator, which comprises a commutating base, ceramic beads and copper sheets, the periphery of the commutating base is surrounded by a plurality of copper sheets, ceramic beads are arranged between the adjacent copper sheets, each copper sheet is provided with a concave surface matched with the ceramic beads, and the ceramic beads are in contact with the copper sheets through the concave surface; the ceramic beads are arranged in a ceramic bead loading part, and the ceramic bead loading part is connected with the copper sheets.

[0007] The ceramic bead commutator can effectively improve the assembly efficiency, avoids the process of placing the ceramic beads into the copper sheets one by one, and only needs to arrange the ceramic beads into the ceramic bead loading part, then directly arranges the whole ceramic bead loading part into or into the concave surface of the copper sheet, so that the ceramic bead loading part applies force to the ceramic beads towards the axis and the inside, and the installation precision of the copper sheet is ensured; meanwhile, the copper sheets in the commutator assembled through the above method are not easy to scatter due to accidental conditions, the combination of the ceramic bead loading part and the ceramic beads plays a good fixing and limiting role, the risk of simultaneous separation of the copper sheets on the whole circumference is greatly reduced, the uniformly distributed positioning holes on the ceramic bead loading part further prevent the ceramic beads from falling off, the ceramic beads will not fall off from the concave surface of the copper sheet after the copper sheet is used for a long time and is abraded, the service life of the ceramic bead commutator is effectively prolonged, and the overall quality of the product is ensured, and the ceramic bead loading part can be applied to various types of commutators.

[0008] Preferably, the ceramic bead loading part is a reinforcing ring, the reinforcing ring is provided with the positioning hole, and the ceramic beads are arranged in the positioning hole.

[0009] Preferably, the reinforcing ring is connected with the copper sheet.

[0010] Preferably, the reinforcing ring is made of an insulating material, has a certain hardness, can effectively fix the ceramic beads, and can ensure the service life of the commutator.

[0011] Preferably, the ceramic bead loading part comprises an upper fixing seat, a lower fixing seat, an upper connecting ring and a lower connecting ring, the upper connecting ring is assembled with a plurality of upper fixing seats, the lower connecting ring is assembled with a plurality of lower fixing seats, the upper connecting ring and the lower connecting ring are correspondingly arranged, and the ceramic beads are arranged between the corresponding upper fixing seats and lower fixing seats; the upper connecting ring or the lower connecting ring is embedded with the copper sheet.

[0012] Preferably, the upper fixing seat and the lower fixing seat are semicircular, and the diameters of the upper fixing seat and the lower fixing seat are smaller than the diameter of the ceramic beads.

[0013] Preferably, the lower connecting ring is provided with a positioning through hole, the upper connecting ring is provided with a plug-in part, and the plug-in part is arranged in the positioning through hole.

[0014] Preferably, the end of the plug-in part is made of rubber.

[0015] Preferably, the short ends of the copper sheet are bent towards the side of the ceramic beads. The bent ends of the copper sheet are fixed to the ceramic beads, avoiding the ceramic beads from sliding off the copper sheet and affecting the overall performance of the commutator.

[0016] Preferably, the inner ring of the commutator base is provided with a bushing.

[0017] Compared with the prior art, the present application has the following beneficial technical effects:

[0018] The commutator of the present application only needs to load the ceramic beads into the ceramic bead loading member, and then directly clamp the entire ceramic bead loading member into the concave surface of the copper sheet. The above structure design effectively provides support and reinforcement to the adjacent copper sheet, greatly reducing the risk of simultaneous separation of the copper sheet on the entire circumference. On the other hand, the ceramic beads are not easy to fall off from the concave surface of the copper sheet after long-term use and wear, effectively prolonging the service life of the ceramic bead commutator and ensuring the overall quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structure diagram of a ceramic bead commutator with a reinforcing ring according to Embodiment 1 of the present application;

[0020] Figure 2 FIG. 2 is a top view of the ceramic bead commutator with a reinforcing ring according to Embodiment 1 of the present application;

[0021] Figure 3 FIG. 3 is a top view of the reinforcing ring and ceramic bead cooperation structure;

[0022] Figure 4 FIG. 4 is an enlarged view of A in FIG. 2; Figure 3

[0023] Figure 5 FIG. 5 is a top view of the ceramic bead commutator according to Embodiment 2 of the present application;

[0024] Figure 6 FIG. 6 is an enlarged view of the ceramic bead and fixed seat cooperation structure according to Embodiment 2 of the present application;

[0025] Figure 7 FIG. 7 is a structure diagram of the lower connecting ring according to Embodiment 2 of the present application;

[0026] Figure 8 FIG. 8 is a structure diagram of the upper connecting ring according to Embodiment 2 of the present application;

[0027] Figure 9 FIG. 9 is a diagram of the copper sheet and ceramic bead cooperation structure according to Embodiment 2 of the present application.

[0028] FIG. 1 is a structure diagram of a ceramic bead commutator with a reinforcing ring according to Embodiment 1 of the present application; DETAILED DESCRIPTION​

[0029] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0030] Example 1:

[0031] like Figures 1-4 As shown, in this embodiment, the inner ring of the commutation base 1 is provided with a bushing 10, and the outer periphery of the commutation base 1 is formed by multiple copper sheets 3 arranged in a ring. Ceramic beads 2 are provided between adjacent copper sheets 3. Each copper sheet 3 has concave surfaces at both ends that fit with the ceramic beads 2. The ceramic beads 2 contact the copper sheets through the fitting concave surfaces of the copper sheets 3.

[0032] A reinforcing ring 31 is provided between the ceramic bead 2 and the copper sheet 3. The outer ring of the reinforcing ring 31 is engaged with the copper sheet 3. The inner side of the reinforcing ring 31 forms a positioning hole 32. The number of positioning holes 32 is adapted to the ceramic bead 2. The ceramic bead 2 is inserted into the positioning hole 32 of the reinforcing ring 31.

[0033] The commutator designed in this embodiment can effectively improve the assembly efficiency of the commutator. It avoids the process of inserting the ceramic beads 2 one by one into the copper plates 3 in the prior art. In this embodiment, the ceramic beads 2 only need to be inserted into the reinforcing ring 31, and then the entire reinforcing ring 31 is directly snapped into the concave surface of the copper plate 3. The reinforcing ring 31 applies a force to the ceramic beads 2 towards the axis and inward. At the same time, the commutator assembled with the above structure is less likely to have its internal copper plates 3 fall off due to accidental situations. The combination of the reinforcing ring 31 and the ceramic beads 2 plays a good role in fixing and limiting, which greatly reduces the risk of the copper plates separating simultaneously around the circumference. The positioning holes 32 evenly distributed on the reinforcing ring 31 further prevent the ceramic beads 2 from falling off. Even after the copper plates 3 are worn down after long-term use, the ceramic beads 2 are not likely to fall off from the concave surface of the copper plates 3, which effectively extends the service life of the ceramic bead commutator and ensures the overall quality of the product.

[0034] In this embodiment, the reinforcing ring 31 can be made of nylon or rubber. The reinforcing ring is made of an insulating material and has a certain degree of hardness, which effectively limits the movement of the ceramic beads and ensures the service life of the commutator.

[0035] The two ends of the short side of the copper sheet 3 are bent toward one side of the ceramic bead 2. The bending of the copper sheet ends further limits the ceramic bead 2 to prevent it from slipping out between the copper sheets 3 and affecting the overall performance of the commutator.

[0036] like Figures 1-4 As shown in the figure, this embodiment of a ceramic bead commutator with a reinforcing ring is described. In the actual assembly process, all the ceramic beads 2 are inserted into the positioning holes 32 of the reinforcing ring 31. After installation, the entire reinforcing ring 31 is inserted into the copper sheet 3 in the commutator for further 3. Compared with the existing ordinary ceramic bead commutator, the present invention reduces labor costs and improves the overall quality of the commutator.

[0037] Embodiment 2:

[0038] As Figure 1 、 5 In this embodiment, the inner ring of the commutating base 1 is provided with a bushing 10, and the periphery of the commutating base 1 is surrounded by a plurality of copper sheets 3.

[0039] The ceramic beads 2 are embedded between the adjacent copper sheets 3, and each copper sheet 3 is provided with a concave surface matching the ceramic beads 2, and the bottom of the ceramic beads 2 is in contact with the lower fixing seat 5, and the number of the lower fixing seat 5 is the same as that of the ceramic beads 2, and the lower fixing seat 5 is installed on the lower connecting ring 7, and the lower connecting ring 7 is provided with at least two symmetric positioning through holes 9. When assembling the commutator, the ceramic beads 2 do not need to be put into the concave surface of the copper sheet 3 one by one, but can be put into the corresponding lower fixing seat 5 one by one, and since the lower fixing seat 5 is also semicircular, the ceramic beads 2 are not easy to fall out after being put in. After all the ceramic beads 2 in the lower fixing seat 5 are assembled in place, the upper fixing seat 4 is installed on the upper part of the ceramic beads 2, and the shape of the upper fixing seat 4 is symmetrical to that of the lower fixing seat 5, and the number is equal, and the upper and lower fixing seats correspondingly clamp the ceramic beads 2 in the middle.

[0040] The upper part of the ceramic beads 2 is in contact with the upper fixing seat 4, and the number of the upper fixing seat 4 is the same as that of the ceramic beads 2, and the upper fixing seat 4 is installed on the upper connecting ring 6, and the surface of the upper connecting ring 6 is connected with at least two symmetric plug-in parts 8, and one end of the plug-in part 8 is made of rubber. The upper connecting ring 6 and the lower connecting ring 7 are used in cooperation for limiting the ceramic beads 2, so as to facilitate the assembly, and the end part of the plug-in part 8 of the upper connecting ring 6 is made of rubber, so as to facilitate the installation between the upper and lower connecting rings.

[0041] The upper fixing seat 4 and the lower fixing seat 5 are semicircular, and the diameter of the upper fixing seat 4 and the lower fixing seat 5 is smaller than that of the ceramic beads 2. This design is to make the left and right sides of the ceramic beads 2 always close to the side wall of the copper sheet 3, and in the assembly process, the copper sheet 3 will not have the phenomenon of different spacing between the copper sheets 3 and displacement of the copper sheet 3.

[0042] At the same time, the plug-in part 8 of the upper connecting ring 6 corresponds to the through hole 9 of the lower connecting ring 7, and the plug-in part 8 is clamped into the through hole 9 of the lower connecting ring 7 by pressing the upper connecting ring 6, and the assembled ceramic beads 2 and the combination of the upper and lower connecting rings are put into the concave surface of the copper sheet 3, and the upper connecting ring 6 or the lower connecting ring 7 is embedded with the copper sheet 3. The structure design of this embodiment improves the assembly efficiency and improves the production capacity, and the ceramic beads are not easy to fall out from the concave surface of the copper sheet after the copper sheet is worn out for a long time, effectively prolongs the service life of the ceramic bead commutator, and also ensures the overall quality of the product.

[0043] As Figure 1 、 5As shown in Fig. 9, during assembly, the ceramic beads 2 are placed into the lower fixing seats 5 of the lower connecting ring 7, and after all the ceramic beads 2 are placed into the lower fixing seats 5, the upper connecting ring 6 is assembled onto the upper part of the ceramic beads 2, the upper fixing seats 4 of the upper connecting ring 6 correspond to the ceramic beads 2, and the insertion pieces 8 of the upper connecting ring 6 correspond to the through holes 9 of the lower connecting ring 7, the insertion pieces 8 are clamped into the through holes 9 of the lower connecting ring 7 by pressing the upper connecting ring 6, and the assembled ceramic beads 2 and the combination of the upper and lower connecting rings are directly placed into the concave surface of the copper sheet 3 for embedding, the whole process does not need to place the ceramic beads 2 into the copper sheet 3 of the commutator one by one, the assembly time of the ceramic bead commutator is shortened, and the quality of the commutator as a whole is ensured.

[0044] The specific embodiments described herein are merely illustrative of the principles of this application. Numerous modifications or adaptations will be readily apparent to those skilled in the art of this application, as these specific embodiments are merely illustrative of the principles of this application. Therefore, the scope of this application is not to be limited to the specific embodiments disclosed but is to be interpreted as broadly as is deemed reasonable by the skilled artisan in the art.

Claims

1. A ceramic bead commutator, characterized in that: The commutation substrate (1), ceramic beads (2), and copper sheets (3) are included. The periphery of the commutation substrate (1) is formed by multiple copper sheets (3) arranged in a ring. Ceramic beads (2) are provided between adjacent copper sheets (3). Each copper sheet (3) has a concave surface that fits with the ceramic beads (2). The ceramic beads (2) contact the copper sheets (3) through the concave surface. The ceramic beads (2) are mounted on a ceramic bead loading device, which is connected to the copper sheets (3). The ceramic bead loading component is a reinforcing ring, and the reinforcing ring (31) has a positioning hole (32), and the ceramic bead (2) is installed in the positioning hole (32); The reinforcing ring is snapped into the copper sheet (3); The ceramic bead loading component includes an upper fixing seat (4), a lower fixing seat (5), an upper connecting ring (6), and a lower connecting ring (7). The upper connecting ring (6) is equipped with multiple upper fixing seats (4), and the lower connecting ring (7) is equipped with multiple lower fixing seats (5). The upper connecting ring (6) and the lower connecting ring (7) are installed correspondingly, and ceramic beads (2) are inserted between the corresponding upper fixing seats (4) and lower fixing seats (5). The upper connecting ring (6) or the lower connecting ring (7) is embedded with a copper sheet (3). The reinforcing ring (31) is made of insulating material; Both the upper fixing seat (4) and the lower fixing seat (5) are semi-circular, and the diameters of the upper fixing seat (4) and the lower fixing seat (5) are smaller than the diameter of the ceramic bead (2); The lower connecting ring (7) has a positioning through hole (9), and correspondingly, the upper connecting ring (6) has a plug (8), which is inserted into the positioning through hole (9). The end of the connector (8) is made of rubber.

2. The ceramic bead commutator according to claim 1, characterized in that: The end of the copper sheet (3) is bent toward the ceramic bead (2).

3. A ceramic bead commutator according to claim 1, characterized in that: The inner ring of the commutation base (1) is provided with a bushing (10).

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