Hook type commutator

Abstract

The invention relates to the technical field of commutators, and discloses a hook type commutator which comprises an inner sleeve, a supporting groove is formed in the upper side of the inner sleeve, a fixing ring is fixedly connected to the bottom end of the inner sleeve, commutator segments are arranged on the outer wall of the inner sleeve, and the bottom ends of the commutator segments are arranged in the fixing ring. A first hook part and a second hook part are fixedly connected to the top end of the commutator segment, a sliding groove is formed in the second hook part, a mounting groove is formed in the fixing ring, a fixing plate is fixedly connected to the bottom end of the commutator segment, and a fixing assembly is arranged on the outer wall of the fixing plate. By adding the hook part I and the hook part II at the top end of the commutator segment, connection points with external wires can be increased, when current flows to a motor rotor winding from a power supply, double hooks can bear the current at the same time and can bear larger current load compared with a single hook, the conductivity of the commutator is effectively improved, and the service life of the commutator is prolonged. And motor power reduction caused by unsmooth current transmission is avoided.

Description

Technical Field

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

[0002] The working principle of the traditional commutator is mainly to change the direction of the motor current by mechanical means to ensure that the motor continues to rotate. The commutator is composed of copper sheets and brushes. The brushes are in contact with the copper sheets of the commutator to form a circuit. When the motor rotates, the commutator rotates accordingly, and the brushes always remain in contact with the copper sheets. As the motor rotor rotates, the commutator continuously changes the direction of the current to maintain the direction of rotation of the rotor. Whenever the motor rotor passes a certain angle, the commutator reverses the direction of the current so that the motor can continue to rotate in the predetermined direction. The function of the commutator is to ensure the efficient operation of the motor while preventing shutdown caused by reverse current.

[0003] However, most existing commutators use a single hook or fewer connection points to connect external wires. This design makes the current transmission path single. During the operation of the motor, when the motor is in a high-load operation state, the current demand increases significantly, and the single-path current transmission method is difficult to meet the motor's demand for electricity. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a hook-type commutator to solve the problem that it is difficult to meet the power demand of the motor when the motor is in a high-load operation state.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hook-type commutator, comprising an inner sleeve, a support groove is provided inside the upper side of the inner sleeve, a fixing ring is fixedly connected to the bottom end of the inner sleeve, a commutator segment is provided on the outer wall of the inner sleeve, the bottom end of the commutator segment is provided inside the fixing ring, a hook portion 1 and a hook portion 2 are fixedly connected to the top end of the commutator segment, a slide groove is provided inside the hook portion 2, an installation groove is provided inside the fixing ring, a fixing plate is fixedly connected to the bottom end of the commutator segment, and a fixing component is provided on the outer wall of the fixing plate.

[0006] Preferably, the upper surface of the base is fixedly connected to the lower surface of the fixed plate, the left outer wall of the fixed plate is fixedly connected with spring 1, the left outer wall of the spring 1 is provided with rotating plate 1, the right outer wall of the fixed plate is provided with spring 2, and the right outer wall of the spring 2 is provided with rotating plate 2.

[0007] Preferably, the lower side of the rotating plate 1 is internally rotatably connected to the outer wall of the base, the top ends of the rotating plate 1 and the rotating plate 2 are arranged at the bottom end of the fixing ring, and the lower side of the rotating plate 2 is internally rotatably connected to the outer wall of the base.

[0008] Preferably, the inner sleeve is made of phenolic plastic, has a thickness of 3 mm, and can withstand a high temperature of 180° C. without affecting the insulation performance.

[0009] Preferably, the commutator segments are evenly distributed along the circumferential direction of the inner sleeve, and a total of 12 segments are provided.

[0010] Preferably, the lengths of the hook portion 1 and the hook portion 2 are 8 mm, and the bending angles of the hook portion 1 and the commutator segment are both 135 degrees to ensure a stable connection with the external circuit.

[0011] Preferably, the spring one and the spring two are both helical compression springs.

[0012] Preferably, the support groove has a depth of 5-8 mm and a width of 6-10 mm.

[0013] Preferably, the thickness of the fixing ring is 4-6 mm, and the interference fit tolerance between the inner diameter and the outer diameter of the inner sleeve is between 0.05-0.1 mm.

[0014] Preferably, the installation groove has a depth of 3-5 mm, a width of 5-7 mm, and an I-shape.

[0015] Working principle: When the hook-type commutator is applied to a motor or other equipment, the power supply current is introduced through the line connected to the hook part 1 and the hook part 2. Since the hook part 1 and the hook part 2 are fixed at the top of the commutator segment, the current is conducted downward along the commutator segment. The bottom end of the commutator segment is set inside the fixing ring and connected to the fixing plate. The current will continue to be conducted through the fixing plate and finally connected to the motor rotor winding and other components to provide power for the motor operation.

[0016] During the operation of the motor, the direction of the current needs to be constantly changed to achieve continuous rotation of the motor. When the motor rotor rotates to a specific position, the external structure that cooperates with the slide slot will change position. Since the slide slot is opened inside the second hook portion, the external structure can slide in the slide slot. When the external structure cooperates with the slide slots on different commutator segments, the commutator segment into which the current flows will change, thereby changing the direction of the current in the motor rotor winding and achieving commutation of the motor current. Through the mutual cooperation of the slide slot and the external structure, the hook-type commutator can accurately control the direction of the current and ensure continuous and stable operation of the motor.

[0017] When the commutator segment needs to be fixed, the commutator segment is pressed downward, and the commutator segment will drive the fixed plate to move downward. When the outer walls of the rotating plate 1 and the rotating plate 2 contact the inside of the mounting groove, the mounting groove will squeeze the rotating plate 1 and the rotating plate 2, and the squeezing of the rotating plate 2 will drive the spring 2 to compress. When the rotating plate 1 and the rotating plate 2 slide out of the mounting groove, the spring 1 will release the rotating plate 1, and the spring 2 will release the rotating plate 2. Finally, the rotating plate 1 and the rotating plate 2 will be stuck on the lower surface of the fixing ring to fix the commutator segment on the upper surface of the fixing ring. When the commutator segment needs to be disassembled During maintenance, manually squeeze rotating plate 1 and rotating plate 2, rotating plate 1 will compress spring 1, causing rotating plate 1 and rotating plate 2 to slide inside the mounting groove, and then pull the commutator segment upward. When the outer walls of rotating plate 1 and rotating plate 2 leave the inside of the mounting groove, take out the commutator segment. This allows workers to quickly and accurately install the commutator segment to the specified position without the need for long-term alignment and fixing operations. This convenient installation method can greatly increase product output per unit time, effectively reduce production costs, and thereby enhance the company's advantage in market competition.

[0018] The present invention provides a hook-type commutator having the following beneficial effects: 1. The present invention increases the connection points with external wires by adding hook part 1 and hook part 2 at the top of the commutator segment, thereby widening the path of current transmission. When current flows from the power supply to the motor rotor winding, the double hooks can carry current at the same time. Compared with the single hook, it can withstand a larger current load, effectively improving the conductivity of the commutator, ensuring stable power supply when the motor is running at high load, and avoiding problems such as motor power reduction due to poor current transmission.

[0019] 2. The present invention enables workers to quickly and accurately install the commutator segments to the specified position without long-term alignment and fixing operations. During installation, the commutator segments are pressed downward, and the automatic positioning is achieved by using the squeezing of the rotating plate by the installation groove and the elastic force of the spring. During disassembly, the commutator segments can be easily removed by manually squeezing the rotating plate. This convenient installation method can greatly increase the product output per unit time, effectively reduce production costs, and thus enhance the company's advantage in market competition. It also provides great convenience for the later maintenance and overhaul of the equipment.

[0020] 3. In the present invention, when the motor generates high temperature during operation, the phenolic plastic inner sleeve can continuously and effectively isolate the commutator segments from other components, prevent current leakage, avoid the occurrence of short-circuit faults, ensure the safety and stability of the motor operation, extend the service life of the motor and the commutator, and reduce the equipment maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the local structure of the fixing ring of the present invention; Figure 3 It is a partial structural schematic diagram of the hook portion of the present invention; Figure 4 It is a schematic diagram of the local structure of the chute of the present invention; Figure 5 It is a schematic diagram of the local structure of the hook portion of the present invention; Figure 6 It is a schematic diagram of the local structure of the commutator segment of the present invention; Figure 7 It is a schematic diagram of the local structure of the installation slot of the present invention; Figure 8 It is a schematic diagram of a local structure of a spring of the present invention.

[0022] Among them, 1. inner sleeve; 2. support groove; 3. fixed ring; 4. commutator; 5. bending hook part 1; 6. bending hook part 2; 7. slide groove; 8. installation groove; 9. fixed plate; 10. spring 1; 11. rotating plate 1; 12. spring 2; 13. rotating plate 2; 14. base. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Please see attached Figure 1 -Attached Figure 3 The embodiment of the present invention provides a hook-type commutator, including an inner sleeve 1, a support groove 2 is provided inside the upper side of the inner sleeve 1, a fixing ring 3 is fixedly connected to the bottom end of the inner sleeve 1, a commutator segment 4 is arranged on the outer wall of the inner sleeve 1, the bottom end of the commutator segment 4 is arranged inside the fixing ring 3, a hook portion 1 5 and a hook portion 2 6 are fixedly connected to the top end of the commutator segment 4, a slide groove 7 is provided inside the hook portion 2 6, an installation groove 8 is provided inside the fixing ring 3, a fixing plate 9 is fixedly connected to the bottom end of the commutator segment 4, and a fixing component is provided on the outer wall of the fixing plate 9.

[0025] Specifically, when the hook-type commutator is applied to equipment such as motors, the power supply current will be introduced through the line connected to the hook part 1 5 and the hook part 2 6. Since the hook part 1 5 and the hook part 2 6 are fixed at the top of the commutator segment 4, the current will be conducted downward along the commutator segment 4, and the commutator segment 4 will conduct the current into the fixing ring 3 for further conduction, and finally connected with the motor rotor winding and other components to provide power for the motor operation. By adding the hook part 1 5 and the hook part 2 6 on the upper side of the commutator segment 4, the double hook design increases the connection points with the external wires and broadens the path of current transmission. Taking the current transmission during motor operation as an example, when the current flows from the power supply to the motor rotor winding, the double hooks can carry the current at the same time, and can withstand a larger current load than a single hook, effectively improving the conductivity of the commutator, ensuring the stable power supply of the motor when the motor is running at high load, and avoiding problems such as motor power reduction caused by poor current transmission. The cross-section of the slide groove 7 is arc-shaped, which can fix the enameled wire when the rotor is wound, restrict its movement, and reduce the rate of scratches on the enameled wire and the hook foot surface.

[0026] Please see attached Figure 6 -Attached Figure 8 The fixed component includes a base 14, the upper surface of the base 14 is fixedly connected to the lower surface of the fixed plate 9, the left outer wall of the fixed plate 9 is fixedly connected with a spring 10, the left outer wall of the spring 10 is provided with a rotating plate 11, the right outer wall of the fixed plate 9 is provided with a spring 2 12, and the right outer wall of the spring 2 12 is provided with a rotating plate 2 13; the lower inner side of the rotating plate 11 is rotatably connected to the outer wall of the base 14, the top ends of the rotating plate 11 and the rotating plate 2 13 are provided at the bottom end of the fixed ring 3, and the lower inner side of the rotating plate 2 13 is rotatably connected to the outer wall of the base 14.

[0027] Specifically, when the commutator segment 4 needs to be fixed, the commutator segment 4 is pressed downward, and the commutator segment 4 will drive the fixed plate 9 to move downward. When the outer walls of the rotating plate 11 and the rotating plate 2 13 contact the inside of the mounting groove 8, the mounting groove 8 will squeeze the rotating plate 11 and the rotating plate 2 13. The rotating plate 11 is squeezed and compressed, and the rotating plate 11 is squeezed and the rotating plate 2 13 is squeezed and the spring 2 12 is compressed. When the rotating plate 11 and the rotating plate 2 13 slide out of the mounting groove 8, the spring 10 will release the rotating plate 11, and the spring 2 12 will release the rotating plate 2 13. Finally, the rotating plate 11 and the rotating plate 2 13 will be stuck on the lower surface of the fixing ring 3 to fix the commutator segment 4 on the upper surface of the fixing ring 3. On the surface, when the commutator segment 4 needs to be disassembled and repaired, the rotating plate 11 and the rotating plate 2 13 are manually squeezed, and the rotating plate 11 will compress the spring 10, and the rotating plate 2 13 will compress the spring 2 12, so that the rotating plate 11 and the rotating plate 2 13 slide inside the mounting groove 8, and then the commutator segment 4 is pulled upward. When the outer walls of the rotating plate 11 and the rotating plate 2 13 leave the inside of the mounting groove 8, the commutator segment 4 is taken out, so that the workers can quickly and accurately install the commutator segment to the specified position without the need for long-term alignment and fixing operations. This convenient installation method can greatly increase the product output per unit time, effectively reduce production costs, and thereby enhance the company's advantage in market competition.

[0028] Please see attached Figure 2 -Read the attachment Figure 5 The inner sleeve 1 is made of phenolic plastic with a thickness of 3 mm, which can withstand a high temperature of 180°C without affecting the insulation performance; the commutator segments 4 are evenly distributed along the circumferential direction of the inner sleeve 1, and a total of 12 segments are provided.

[0029] Specifically, when a motor or other equipment is running, heat will be generated inside, especially under some high loads or special working conditions, the temperature will rise significantly. The high temperature resistant insulation property of phenolic plastic ensures that the inner sleeve 1 can still effectively isolate the commutator segments 4 in a high temperature environment, prevent current leakage, avoid the occurrence of short circuit faults, and ensure the safety and stability of the motor operation. The commutator segments 4 are evenly distributed along the circumferential direction of the inner sleeve 1, making the current commutation more uniform and stable.

[0030] Please see attached Figure 3 and attached Figure 8 The length of the hook portion 1 5 and the hook portion 2 6 is 8 mm, and the bending angles of the hook portion 1 5 and the commutator segment 4 are both 135 degrees to ensure a stable connection with the external circuit; the spring 10 and the spring 2 12 are both helical compression springs.

[0031] Specifically, the length of the hook portion 1 5 and the hook portion 2 6 is 8 mm, which provides a suitable space for winding and fixing the external line. The longer hook can increase the contact length with the wire, increase the friction, and make the wire not easy to fall off. The spring 1 10 and the spring 2 12 are both helical compression springs, which have good elastic properties.

[0032] Please see attached Figure 2 The depth of the support groove 2 is 5-8 mm and the width is 6-10 mm; the thickness of the fixing ring 3 is 4-6 mm, and the interference fit tolerance between the inner diameter and the outer diameter of the inner sleeve 1 is between 0.05-0.1 mm.

[0033] Specifically, the support groove 2 has a depth of 5-8 mm and a width of 6-10 mm, which can ensure that the components are in a stable position after installation. In terms of width, it can accommodate the components and provide them with a certain amount of space for movement, while ensuring good fit with the components. During the operation of the motor, the friction and collision between the components and the support groove 2 are reduced, and the stability and reliability of the equipment operation are improved. The interference fit makes the fixing ring 3 tightly fit on the inner sleeve 1, which can ensure that the fixing ring 3 is tightly connected to the inner sleeve 1 to prevent loosening, and will not cause installation difficulties or damage to the inner sleeve 1 due to excessive interference.

[0034] Please see attached Figure 7 The depth of the installation groove 8 is 3-5 mm, the width is 5-7 mm, and the shape of the groove is I-shaped.

[0035] Specifically, the shape of the groove is an I-shape, which provides a stable embedding foundation for the rotating plate 11 and the rotating plate 2 13, avoiding the risk of shaking and instability after the components are installed due to insufficient depth, and avoiding the problem of weakening the overall structural strength and destroying the spatial layout due to excessive depth.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hook-type commutator, comprising an inner sleeve (1), characterized in that: A support groove (2) is provided inside the upper side of the inner sleeve (1), a fixing ring (3) is fixedly connected to the bottom end of the inner sleeve (1), a commutator segment (4) is provided on the outer wall of the inner sleeve (1), the bottom end of the commutator segment (4) is arranged inside the fixing ring (3), a first hook portion (5) and a second hook portion (6) are fixedly connected to the top end of the commutator segment (4), a sliding groove (7) is provided inside the second hook portion (6), a mounting groove (8) is provided inside the fixing ring (3), a fixing plate (9) is fixedly connected to the bottom end of the commutator segment (4), and a fixing component is provided on the outer wall of the fixing plate (9).

2. A hook type commutator according to claim 1, characterized in that: The fixing assembly comprises a base (14), the upper surface of the base (14) being fixedly connected to the lower surface of the fixing plate (9), the left outer wall of the fixing plate (9) being fixedly connected to a spring 1 (10), the left outer wall of the spring 1 (10) being provided with a rotating plate 1 (11), the right outer wall of the fixing plate (9) being provided with a spring 2 (12), and the right outer wall of the spring 2 (12) being provided with a rotating plate 2 (13).

3. A hook type commutator according to claim 2, characterized in that: The lower inner side of the rotating plate 1 (11) is rotatably connected to the outer wall of the base (14); the top ends of the rotating plate 1 (11) and the rotating plate 2 (13) are arranged at the bottom end of the fixed ring (3); the lower inner side of the rotating plate 2 (13) is rotatably connected to the outer wall of the base (14).

4. A hook type commutator according to claim 1, characterized in that: The inner sleeve (1) is made of phenolic plastic and has a thickness of 3 mm. It can withstand a high temperature of 180° C. without affecting the insulation performance.

5. A hook type commutator according to claim 1, characterized in that: The commutator segments (4) are evenly distributed along the circumferential direction of the inner sleeve (1), and a total of 12 segments are provided.

6. A hook type commutator according to claim 1, characterized in that: The lengths of the first hook portion (5) and the second hook portion (6) are 8 millimeters, and the bending angles of the first hook portion (5) and the commutator segment (4) are both 135 degrees, so as to ensure a stable connection with an external circuit.

7. A hook type commutator according to claim 2, characterized in that: The spring one (10) and the spring two (12) are both helical compression springs.

8. A hook type commutator according to claim 1, characterized in that: The support groove (2) has a depth of 5-8 mm and a width of 6-10 mm.

9. A hook type commutator according to claim 1, characterized in that: The thickness of the fixing ring (3) is 4-6 mm, and the interference fit tolerance of the inner diameter with the outer diameter of the inner sleeve (1) is between 0.05-0.1 mm.

10. A hook type commutator according to claim 1, characterized in that: The installation groove (8) has a depth of 3-5 mm and a width of 5-7 mm, and the shape of the groove is an I-shape.

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