Hook type commutator

Abstract

The utility model discloses a hook-type commutator, and belongs to the technical field of hook-type commutators, and the hook-type commutator comprises a bakelite powder matrix. The device is novel in design and ingenious, polytetrafluoroethylene liquid is poured into the first cavity, polytetrafluoroethylene is a high-performance fluoropolymer and has excellent high-temperature resistance, the liquid form of the polytetrafluoroethylene is kept stable at high temperature, in addition, the second cavity is formed in the bakelite powder base body and located outside the first cavity, and the high-temperature resistance of the bakelite powder base body is improved. The high-temperature-resistant film insulating material is installed in the second cavity, and the high-temperature-resistant film insulating material has high hardness, good brittleness, good chemical corrosion resistance and extremely high heat resistance, so that the stability of the structure and the performance of the high-temperature-resistant film insulating material can be kept in an extremely high-temperature environment, and the hook type commutator cannot be influenced by high temperature during high-speed operation; and the outer diameter change and the inter-sheet segment difference of the hook-type commutator are smaller, so that the stability and the working reliability of the hook-type commutator product are effectively improved, the service life of the hook-type commutator product is effectively prolonged, and the practicability of the device is greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of hook-type commutators, and in particular to a hook-type commutator. Background Art

[0002] The patent with the published authorization announcement number CN210224542U discloses a hook-type commutator, including a bakelite powder matrix and a commutation copper sheet. Adjacent commutation copper sheets are separated from each other by an insulation distance. The insulation distance is filled with bakelite powder at a height close to the upper end surface of the bakelite powder matrix, and the remaining part is milled. The top of the milled groove has an arc transition. The commutation copper sheet is a strip-shaped body before forming. The outer side surface of the strip is an arc surface, and the inner side surface is provided with hook feet. The left and right sides of the strip are provided with punching notches near the upper position. The twice width of the punching notch is equal to the width of the insulation distance. The upper and lower punching surfaces of the punching notch are inclined surfaces. The inclined surfaces make the tangent height of the lower punching surface on the outer side surface of the strip greater than the tangent height on the inner side surface. The top of the milled groove is close to the tangent of the lower punching surface on the outer side surface of the strip. The patent can prevent glue from entering the insulation groove, and there is almost no bakelite powder hanging on both sides of the milled groove, which ensures the appearance quality of the commutator, reduces the workload of milling grooves, and reduces tool wear.

[0003] Commutators are generally divided into three types: hook-type commutators, slot-type commutators and end-face commutators. In order to strengthen the bonding strength between the hook-type commutator copper sheet and the commutation matrix and improve the mechanical properties and overspeed performance of the hook-type commutator products, the traditional hook-type commutator often adopts a structure with a reinforcing ring inside. In order to avoid conductivity between the sheets, the reinforcing ring must be made of insulating material. At present, glass fiber material is basically used. The reinforcing ring of glass fiber material has poor high temperature resistance and is easy to deform at high temperatures. Therefore, when the hook-type commutator is running at high speed, the high temperature causes the outer diameter of the hook-type commutator to change and the segment difference between the sheets to be large, thereby seriously affecting the stability and service life of the hook-type commutator. At the same time, it also relatively increases the cost of the reinforcing ring of the fiber material. The above patent does not propose a solution to the above problems.

[0004] To this end, the present application proposes a hook-type commutator. Utility Model Content

[0005] A hook-type commutator proposed in the present application solves the problems raised in the above-mentioned background technology; polytetrafluoroethylene liquid is poured into cavity one, polytetrafluoroethylene is a high-performance fluoropolymer with excellent high temperature resistance, its liquid form remains stable at high temperature, and can be used at continuous high temperature, thereby enhancing the heat resistance of the hook-type commutator; in addition, cavity two is arranged inside the bakelite powder matrix and outside cavity one, and high-temperature resistant film insulating material is installed in cavity two, the high-temperature resistant film insulating material has high hardness, good brittleness, good chemical corrosion resistance, and at the same time, has extremely high heat resistance, can maintain the stability of its structure and performance in an extremely high temperature environment, can make the hook-type commutator not be affected by high temperature when running at high speed, the outer diameter change of the hook-type commutator and the segment difference between the segments are smaller, thereby effectively improving the stability, working reliability and service life of the hook-type commutator product, and greatly improving the practicality of the device.

[0006] In order to achieve the above purpose, this application adopts the following technical solutions:

[0007] A hook-type commutator comprises a bakelite powder substrate, a commutation copper sheet is fixedly connected to the outside of the bakelite powder substrate, a plurality of hooks are arranged at the end of the commutation copper sheet, a heat-resistant component 1 is arranged inside the bakelite powder substrate, the heat-resistant component 1 comprises a cavity 1, the cavity 1 is arranged inside the bakelite powder substrate, and the interior of the cavity 1 is filled with polytetrafluoroethylene liquid.

[0008] As a preferred embodiment, a sealing component is provided inside the bakelite powder matrix, and the sealing component includes a sealing card slot, the sealing card slot is opened inside the bakelite powder matrix, and the sealing card slot is connected to the cavity, and a sealing rubber block is provided inside the sealing card slot and above the polytetrafluoroethylene liquid;

[0009] By installing a sealing rubber block 52 inside the sealing slot 51, the sealing rubber block 52 can seal the polytetrafluoroethylene liquid 42 in the cavity 41, which can prevent gas or liquid leakage and foreign material intrusion to ensure safety and durability, thereby improving the practicality of the device.

[0010] As a preferred embodiment, a mounting assembly is provided inside the bakelite powder matrix, and the mounting assembly includes a mounting groove, the mounting groove is provided inside the bakelite powder matrix, and the mounting groove is connected with the sealing card groove and the cavity, a mounting block is installed inside the mounting groove, and a groove is provided inside the mounting block;

[0011] By installing the installation block 62 in the installation groove 61, the sealing rubber block 52 in the sealing card groove 51 can be strengthened and fixed, so that the polytetrafluoroethylene liquid 42 in the cavity 1 41 is not easy to leak, thereby improving the practicality of the device.

[0012] As a preferred embodiment, the interior of the mounting block is rotatably connected with a rotating assembly, the rotating assembly includes a gear, the gear is rotatably connected inside the mounting block, two racks are slidably connected inside the mounting block, and the gear and the two racks are meshed and connected, the interior of the gear is fixedly connected with a rotating rod, and the top end of the rotating rod extends into the interior of the groove;

[0013] By setting up the rotating assembly 7, the gear 71 can be rotated by rotating the rotating rod 73. When the gear 71 rotates, the two racks 72 will move away from the gear 71 through meshing, so that the two racks 72 extend into the bakelite powder matrix 1 to limit the mounting block 62, thereby improving the practicability of the device.

[0014] As a preferred embodiment, a positioning component is provided inside the bakelite powder matrix, and the positioning component includes a positioning groove, two of the positioning grooves are opened inside the bakelite powder matrix, and the two positioning grooves are connected with the mounting groove, the sealing card groove and the cavity, and one end of the two racks is fixedly connected with a positioning hook, and the two positioning hooks extend into the corresponding positioning groove;

[0015] The rack 72 is positioned by extending the two positioning hooks 82 into the corresponding positioning grooves 81 so that the rack 72 no longer moves, thereby enhancing the stabilizing effect of the mounting block 62 and preventing the mounting block 62 from loosening during use of the hook-type commutator, thereby improving the use effect and the practicability of the device.

[0016] As a preferred embodiment, a heat-resistant component 2 is arranged inside the bakelite powder matrix and outside the cavity 1, and the heat-resistant component 2 includes a cavity 2, and the cavity 2 is arranged inside the bakelite powder matrix, and a high-temperature resistant film insulating material is arranged inside the cavity 2;

[0017] By setting a heat-resistant component 9, a cavity 91 is set inside the bakelite powder matrix 1 and outside the cavity 41, and a high-temperature resistant film insulating material 92 is installed in the cavity 91. The high-temperature resistant film insulating material 92 has high hardness, good brittleness, and good chemical corrosion resistance. At the same time, it has extremely high heat resistance and can maintain the stability of its structure and performance in an extremely high temperature environment. It can make the hook-type commutator not affected by high temperature when running at high speed, and the outer diameter change of the hook-type commutator and the segment difference between the segments are smaller, thereby effectively improving the stability, working reliability and service life of the hook-type commutator product, thereby improving the practicability of the device.

[0018] Beneficial effects of this application:

[0019] 1. The hook-type commutator is provided with a heat-resistant component, a cavity and polytetrafluoroethylene liquid. The cavity is provided in a bakelite powder matrix, and polytetrafluoroethylene liquid is poured into the cavity. Polytetrafluoroethylene is a high-performance fluoropolymer with excellent high-temperature resistance. Its liquid form remains stable at high temperatures and can be used at continuous high temperatures, thereby enhancing the heat resistance of the hook-type commutator and greatly improving the practicality of the device.

[0020] 2. This hook-type commutator is provided with a heat-resistant component II, a cavity II and a high-temperature resistant film insulating material. Cavity II is provided inside the bakelite powder matrix and outside cavity I, and the high-temperature resistant film insulating material is installed in cavity II. The high-temperature resistant film insulating material has high hardness, good brittleness, and good chemical corrosion resistance. At the same time, it has extremely high heat resistance and can maintain the stability of its structure and performance in an extremely high temperature environment. It can make the hook-type commutator not affected by high temperature during high-speed operation, and the outer diameter change of the hook-type commutator and the segment difference between the segments are smaller, thereby effectively improving the stability, working reliability and service life of the hook-type commutator product, and greatly improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the internal front view of the device of the present application;

[0022] Figure 2 It is a schematic diagram of the internal top view of the device of the present application;

[0023] Figure 3 For this application Figure 1 Enlarged view of point A in the middle.

[0024] Numbers in the figure: 1. Bakelite powder matrix; 2. Commutation copper sheet; 3. Hook; 4. Heat-resistant component one; 41. Cavity one; 42. Polytetrafluoroethylene liquid; 5. Sealing component; 51. Sealing slot; 52. Sealing rubber block; 6. Mounting component; 61. Mounting slot; 62. Mounting block; 63. Groove; 7. Rotating component; 71. Gear; 72. Rack; 73. Rotating rod; 8. Positioning component; 81. Positioning slot; 82. Positioning hook; 9. Heat-resistant component two; 91. Cavity two; 92. High-temperature resistant film insulation material. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0026] Reference Figure 1-3 A hook-type commutator comprises a bakelite powder substrate 1, a commutation copper sheet 2 is fixedly connected to the outside of the bakelite powder substrate 1, and a plurality of hooks 3 are arranged at the end of the commutation copper sheet 2.

[0027] A heat-resistant component 4 is arranged inside the bakelite powder matrix 1, and the heat-resistant component 4 includes a cavity 41. The cavity 41 is arranged inside the bakelite powder matrix 1, and the cavity 41 is filled with polytetrafluoroethylene liquid 42. By setting the heat-resistant component 4, a cavity 41 is arranged in the bakelite powder matrix 1, and at the same time, polytetrafluoroethylene liquid 42 is filled into the cavity 41. Polytetrafluoroethylene is a high-performance fluoropolymer with excellent high-temperature resistance. Its liquid form remains stable at high temperatures and can be used at continuous high temperatures, thereby enhancing the heat resistance of the hook-type commutator.

[0028] A sealing component 5 is provided inside the bakelite powder matrix 1, and the sealing component 5 includes a sealing card slot 51. The sealing card slot 51 is opened inside the bakelite powder matrix 1, and the sealing card slot 51 is connected to the cavity 41. A sealing rubber block 52 is provided inside the sealing card slot 51 and above the polytetrafluoroethylene liquid 42. By installing the sealing rubber block 52 inside the sealing card slot 51, the sealing rubber block 52 can seal the polytetrafluoroethylene liquid 42 in the cavity 41, which can prevent gas or liquid leakage and foreign matter intrusion to ensure safety and durability, thereby improving the practicality of the device.

[0029] An installation component 6 is provided inside the bakelite powder matrix 1, and the installation component 6 includes a installation groove 61, which is opened inside the bakelite powder matrix 1, and the installation groove 61 is connected with the sealing card groove 51 and the cavity 41, and a mounting block 62 is installed inside the installation groove 61, and a groove 63 is opened inside the installation block 62; by installing the installation block 62 in the installation groove 61, the sealing rubber block 52 in the sealing card groove 51 can be strengthened and fixed, so that the polytetrafluoroethylene liquid 42 in the cavity 41 is not easy to leak, thereby improving the practicality of the device.

[0030] The mounting block 62 is internally rotatably connected with a rotating assembly 7, and the rotating assembly 7 includes a gear 71, which is rotatably connected to the mounting block 62. The mounting block 62 is internally slidably connected with two racks 72, and the gear 71 and the two racks 72 are meshingly connected. The gear 71 is internally fixedly connected with a rotating rod 73, and the top of the rotating rod 73 extends to the inside of the groove 63. By setting the rotating assembly 7, the gear 71 can be rotated by rotating the rotating rod 73. When the gear 71 rotates, the two racks 72 will move away from the gear 71 through meshing, so that the two racks 72 extend to the inside of the bakelite powder matrix 1 to limit the mounting block 62, thereby improving the practicability of the device.

[0031] A positioning assembly 8 is provided inside the bakelite powder matrix 1, and the positioning assembly 8 includes a positioning groove 81. Two positioning grooves 81 are both opened inside the bakelite powder matrix 1, and the two positioning grooves 81 are connected with the mounting groove 61, the sealing card groove 51 and the cavity 41. One end of the two racks 72 is fixedly connected with a positioning hook 82, and the two positioning hooks 82 extend into the corresponding positioning groove 81; the rack 72 is positioned by extending the two positioning hooks 82 into the corresponding positioning groove 81, so that the rack 72 no longer moves, thereby enhancing the stabilizing effect of the mounting block 62, so that the mounting block 62 is not easy to loosen during the use of the hook-type commutator, thereby improving the use effect and thus enhancing the practicability of the device.

[0032] A heat-resistant component 29 is arranged inside the bakelite powder matrix 1 and outside the cavity 1 41. The heat-resistant component 29 includes a cavity 291. The cavity 291 is arranged inside the bakelite powder matrix 1. A high-temperature resistant film insulating material 92 is arranged inside the cavity 291. By setting the heat-resistant component 29, a cavity 291 is arranged inside the bakelite powder matrix 1 and outside the cavity 1 41, and the high-temperature resistant film insulating material 92 is installed in the cavity 291. The high-temperature resistant film insulating material 92 has high hardness, good brittleness, and good chemical corrosion resistance. At the same time, it has extremely high heat resistance and can maintain the stability of its structure and performance in an extremely high temperature environment. It can make the hook-type commutator not affected by high temperature when running at high speed, and the outer diameter change of the hook-type commutator and the segment difference between the segments are smaller, thereby effectively improving the stability, working reliability and service life of the hook-type commutator product, thereby improving the practicality of the device.

[0033] Working principle: When the device is used, a heat-resistant component 4 is provided, a cavity 41 is provided in the bakelite powder matrix 1, and polytetrafluoroethylene liquid 42 is poured into the cavity 41. Polytetrafluoroethylene is a high-performance fluoropolymer with excellent high-temperature resistance. Its liquid form remains stable at high temperatures and can be used at continuous high temperatures, thereby enhancing the heat resistance of the hook-type commutator.

[0034] In addition, by setting a heat-resistant component 2 9, a cavity 2 91 is set inside the bakelite powder matrix 1 and outside the cavity 1 41, and a high-temperature resistant film insulating material 92 is installed in the cavity 2 91. The high-temperature resistant film insulating material 92 has high hardness, good brittleness, and good chemical corrosion resistance. At the same time, it has extremely high heat resistance and can maintain the stability of its structure and performance in an extremely high temperature environment. It can prevent the hook-type commutator from being affected by high temperature during high-speed operation, and the outer diameter change of the hook-type commutator and the segment difference between the segments are smaller, thereby effectively improving the stability, working reliability and service life of the hook-type commutator product.

[0035] By installing a sealing rubber block 52 inside the sealing groove 51, the sealing rubber block 52 can seal the polytetrafluoroethylene liquid 42 in the cavity 1 41, which can prevent gas or liquid leakage and foreign matter intrusion to ensure safety and durability.

[0036] By installing the installation block 62 in the installation groove 61, the sealing rubber block 52 in the sealing groove 51 can be strengthened and fixed, so that the polytetrafluoroethylene liquid 42 in the cavity 1 41 is not easy to leak.

[0037] By setting the rotating assembly 7, the gear 71 can be rotated by rotating the rotating rod 73. When the gear 71 rotates, the two racks 72 will move away from the gear 71 through meshing, so that the two racks 72 extend into the bakelite powder matrix 1 to limit the mounting block 62.

[0038] When the two racks 72 extend out of the mounting block 62, the two positioning hooks 82 will extend into the corresponding positioning grooves 81 to position the racks 72 so that the racks 72 no longer move, thereby enhancing the stability of the mounting block 62 and preventing the mounting block 62 from loosening during use of the hook-type commutator, thereby improving the use effect.

[0039] The above are only preferred specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present application according to the technical solution and utility model concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A hook-type commutator, comprising a bakelite powder matrix (1), characterized in that: A commutation copper sheet (2) is fixedly connected to the outside of the bakelite powder matrix (1), and a plurality of hooks (3) are arranged at the end of the commutation copper sheet (2). A heat-resistant component one (4) is arranged inside the bakelite powder matrix (1), and the heat-resistant component one (4) comprises a cavity one (41). The cavity one (41) is arranged inside the bakelite powder matrix (1), and the interior of the cavity one (41) is filled with polytetrafluoroethylene liquid (42).

2. A hook type commutator according to claim 1, characterized in that: A sealing component (5) is arranged inside the bakelite powder matrix (1), the sealing component (5) comprising a sealing slot (51), the sealing slot (51) being arranged inside the bakelite powder matrix (1), the sealing slot (51) being connected to cavity one (41), and a sealing rubber block (52) being arranged inside the sealing slot (51) and above the polytetrafluoroethylene liquid (42).

3. A hook type commutator according to claim 2, characterized in that: The bakelite powder matrix (1) is provided with a mounting assembly (6) therein, the mounting assembly (6) comprising a mounting groove (61), the mounting groove (61) being provided inside the bakelite powder matrix (1), the mounting groove (61) being communicated with the sealing card groove (51) and the cavity one (41), the mounting groove (61) being provided with a mounting block (62) therein, the mounting block (62) being provided with a groove (63) therein.

4. A hook type commutator according to claim 3, characterized in that: The mounting block (62) is rotatably connected to a rotating assembly (7) inside the mounting block (62). The rotating assembly (7) comprises a gear (71). The gear (71) is rotatably connected to the inside of the mounting block (62). Two racks (72) are slidably connected to the inside of the mounting block (62), and the gear (71) and the two racks (72) are meshingly connected. A rotating rod (73) is fixedly connected to the inside of the gear (71), and the top end of the rotating rod (73) extends into the inside of the groove (63).

5. A hook type commutator according to claim 4, characterized in that: A positioning assembly (8) is provided inside the bakelite powder matrix (1), and the positioning assembly (8) comprises a positioning groove (81), two positioning grooves (81) are both provided inside the bakelite powder matrix (1), and the two positioning grooves (81) are communicated with the mounting groove (61), the sealing groove (51) and the cavity one (41), one end of the two racks (72) is fixedly connected with a positioning hook (82), and the two positioning hooks (82) extend into the corresponding positioning groove (81).

6. A hook type commutator according to claim 1, characterized in that: A heat-resistant component 2 (9) is arranged inside the bakelite powder matrix (1) and outside the cavity 1 (41); the heat-resistant component 2 (9) comprises a cavity 2 (91); the cavity 2 (91) is arranged inside the bakelite powder matrix (1); and a high-temperature resistant thin film insulating material (92) is arranged inside the cavity 2 (91).

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