Rotor structure of gasoline engine starting motor
By designing the split structure and disassembly structure, the problem of the rotor structure of the existing gasoline engine start motor is difficult to replace the rotor structure of the rotor structure, achieving more efficient maintenance convenience and reducing maintenance costs.
Patent Information
- Application Number
- CN202421086897.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-05-20
AI Technical Summary
The rotor structure of the existing gasoline engine starter motor is integrated or fixed with welding, so the shaft is difficult to remove and replace separately after damage, which is high maintenance cost and inconvenient.
A split structure is designed, including disassembly structures such as through rods, limit retaining rings, annular grooves and annular movable seats, so that the shaft and iron core can be quickly assembled and disassembled, making it easier to disassemble and replace separately.
It improves maintenance convenience, reduces maintenance costs, and realizes rapid disassembly and assembly and replacement of shafts and cores.
Smart Images
Figure CN222169434U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of motor rotors, and in particular relates to a gasoline engine starting motor rotor structure. Background Art
[0002] A gasoline engine is an engine that uses gasoline as fuel to convert internal energy into kinetic energy, and a gasoline engine starter motor is a motor that operates during the gasoline engine starting process. This starter motor can convert the battery's electrical energy into mechanical energy, and when it drives the gasoline engine's flywheel to rotate, the gasoline engine is started. This starter motor is similar to a traditional motor structure, and is composed of a housing, a rotor, a stator and other components. The rotor of the starter motor is the rotating body in the middle of the motor, which can output torque. As described in the existing patent with publication number CN220254228U, "A car starter rotor structure, the utility model includes an iron core, a rotating shaft, an end ring, a fastener, a positioning column and a fan, the iron core is provided with a plurality of first heat dissipation holes, the rotating shaft is arranged on the iron core, and the two end rings are inserted on the rotating shaft", it can be seen that the application describes a common gasoline engine starter motor rotor structure;
[0003] In actual use, the gasoline engine starter motor rotor structure in the prior art is difficult to remove and replace alone if the shaft is damaged, because the shaft and the iron core are mostly integrated structures or welded and fixed. Instead, the shaft must be replaced together with the iron core, resulting in high maintenance costs and low maintenance convenience. Therefore, the utility model proposes a novel gasoline engine starter motor rotor structure. Utility Model Content
[0004] The purpose of the utility model is to provide a gasoline engine starting motor rotor structure to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gasoline engine starting motor rotor structure, comprising an iron core and a rotating shaft, a middle hole for inserting the rotating shaft is penetrated through the center of the iron core, the rotating shaft is inserted into the middle hole, and the bottom end of the rotating shaft penetrates to the bottom of the iron core, a disassembly structure is provided between the rotating shaft and the iron core, the disassembly structure comprises a through rod and a limit retaining ring, through holes corresponding to the through rod are penetrated through the two end surfaces of the rotating shaft, the through rod penetrates the rotating shaft through the through holes, and the two through rods are respectively located at the top and bottom of the iron core, the upper and lower surfaces of the iron core are both provided with limit retaining rings, the limit retaining rings cover the through rod on the inner side, annular grooves are provided inside the upper and lower ends of the iron core, a spring A and an annular movable seat are provided in the annular groove, the annular movable seat is movably installed in the annular groove by a plurality of springs A, and the inner end of the limit retaining ring penetrates to the inner side of the annular groove and is fixed to the annular movable seat.
[0006] Preferably, a plurality of limiting grooves A corresponding to the spring A are formed on one side surface of the annular movable seat, one end of the spring A is inserted into the limiting groove A, a plurality of limiting grooves B corresponding to the spring A are formed on the inner wall of one end of the annular groove, and the other end of the spring A is inserted into the limiting groove B.
[0007] Preferably, an annular notch communicating with the annular groove is formed on the upper and lower surfaces of the iron core, and the annular notch corresponds to the limit retaining ring.
[0008] Preferably, the disassembly and assembly structure also includes an auxiliary positioning structure, which is arranged at the middle hole of the iron core. The auxiliary positioning structure includes an inner groove, a spring B and a telescopic bead. The inner groove is opened on the inner wall of the middle hole. The telescopic bead is movably installed in the inner groove through the spring B. The surface of the rotating shaft is opened with an annular groove corresponding to the telescopic bead, and the end of the telescopic bead pops out into the annular groove.
[0009] Preferably, a plurality of winding grooves are provided on the circumferential surface of the iron core.
[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model improves and optimizes the gasoline engine starter motor rotor structure in the prior art, designs the rotating shaft and the iron core as a split structure, and designs a disassembly and assembly structure composed of a through rod, a limit retaining ring, an annular groove and an annular movable seat, so that the rotating shaft and the iron core can be quickly assembled and disassembled, which is convenient for the operator to separately disassemble and replace the rotating shaft when the rotating shaft is damaged, thereby improving the convenience of later maintenance of the entire rotor structure and reducing later maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a three-dimensional diagram of the utility model;
[0012] Figure 2 It is a cross-sectional view of the utility model;
[0013] Figure 3 For this utility model Figure 2 A partial enlarged view of the middle A area;
[0014] In the figure: 1. iron core; 11. inner groove; 12. spring B; 13. telescopic bead; 2. rotating shaft; 21. through hole; 22. annular groove; 3. winding groove; 4. through rod; 5. limit ring; 6. annular groove; 7. annular movable seat; 8. spring A. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] Example 1
[0017] See also Figure 1 and Figure 2 , which is the first embodiment of the utility model, and this embodiment provides a technical solution: a gasoline engine starting motor rotor structure, including an iron core 1 and a rotating shaft 2, a middle hole for the rotating shaft 2 to be inserted is penetrated at the center of the iron core 1, the rotating shaft 2 is inserted into the middle hole, and the bottom end of the rotating shaft 2 penetrates to the bottom of the iron core 1, and a disassembly structure is provided between the rotating shaft 2 and the iron core 1, and the disassembly structure includes a through rod 4 and a limit retaining ring 5, and through holes 21 corresponding to the through rod 4 are penetrated on both end surfaces of the rotating shaft 2, and the through rod 4 penetrates the rotating shaft 2 through the through holes 21, and the two through rods 4 are respectively located at the top and bottom of the iron core 1, and the two through rods 4 after penetration can play a stable limiting role on the rotating shaft 2, so as to realize the assembly of the rotating shaft 2 and the iron core 1, and the upper and lower surfaces of the iron core 1 are both provided with limit retaining rings 5, and the limit retaining rings 5 cover the through rod 4 on the inside, so as to stably limit the through rod 4, and no matter how the subsequent iron core 1 operates, the through rod 4 is always on the inside of the limit retaining ring 5 The cam 5 is provided with a plurality of springs A8, and the springs A8 and the ring-shaped movable seat 7 are arranged in the ring-shaped groove 6. The ring-shaped movable seat 7 is movably installed in the ring-shaped groove 6 by a plurality of springs A8. The inner end of the limit retaining ring 5 passes through the inner side of the ring-shaped groove 6 and is fixed to the ring-shaped movable seat 7. Under the pushing action of the spring A8, the limit retaining ring 5 can be stably popped out to the outer side of the iron core 1 and block the penetration rod 4 in the daily use, so as to ensure the limiting stability of the limit retaining ring 5 on the penetration rod 4. If the rotating shaft 2 and the iron core 1 are to be disassembled later, it is only necessary to press the limit retaining ring 5 into the inner side of the ring-shaped groove 6, so that the spring A8 is gradually compressed until the limit retaining ring 5 no longer blocks the penetration rod 4, and the penetration rod 4 can be pulled out to release the limit of the rotating shaft 2. Then the rotating shaft 2 and the iron core 1 can be directly separated to realize the disassembly, assembly, maintenance or replacement of the rotating shaft 2.
[0018] Among them, one side surface of the annular movable seat 7 is provided with a plurality of limit grooves A corresponding to the spring A8, one end of the spring A8 is inserted into the limit groove A, and the inner wall of one end of the annular groove 6 is provided with a plurality of limit grooves B corresponding to the spring A8, the other end of the spring A8 is inserted into the limit groove B. The design of the two limit grooves enables the spring A8 to be stably limited and not easily deviated.
[0019] Among them, the upper and lower surfaces of the iron core 1 are both provided with annular notches communicating with the annular groove 6, and the annular notches correspond to the limit retaining ring 5, so that the limit retaining ring 5 can be ejected smoothly and the subsequent limit retaining ring 5 can be smoothly pressed into the annular groove 6.
[0020] A plurality of winding grooves 3 are provided on the circumferential surface of the iron core 1 for subsequent winding of coils.
[0021] Example 2
[0022] See also Figures 1 to 3 , which is the second embodiment of the utility model, is based on the previous embodiment, and the difference is that the auxiliary positioning structure can be set to play an auxiliary positioning role during the assembly process of the shaft 2 and the iron core 1, so as to facilitate the operator to insert the through rod 4.
[0023] Specifically, the disassembly and assembly structure also includes an auxiliary positioning structure, which is arranged at the middle hole of the iron core 1. The auxiliary positioning structure includes an inner groove 11, a spring B12 and a telescopic bead 13. The inner groove 11 is opened on the inner wall of the middle hole. The telescopic bead 13 is movably installed in the inner groove 11 through the spring B12. One end of the spring B12 is fixed on the inner wall of the inner groove 11, and the other end of the spring B12 is fixed to the inner end of the telescopic bead 13 to achieve stable installation of the spring B12. The surface of the rotating shaft 2 is opened with an annular groove 22 corresponding to the telescopic bead 13, and the end of the telescopic bead 13 pops out. To the annular groove 22, so that during the assembly of the rotating shaft 2 with the iron core 1, after the rotating shaft 2 is inserted into the middle hole of the iron core 1, the end of the telescopic bead 13 will be squeezed into the inner groove 11 first, so that the rotating shaft 2 can be normally inserted. When the rotating shaft 2 is inserted into the installation position, the telescopic bead 13 will be aligned with the annular groove 22, and the telescopic bead 13 will pop out into the annular groove 22 under the push of the spring B12, so as to realize the auxiliary limiting of the rotating shaft 2. At this time, the two through holes 21 on the surface of the rotating shaft 2 are respectively at the top and bottom of the iron core 1, which is convenient for the operator to pass the through rod 4, thereby improving the convenience of installation.
[0024] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A gasoline engine starter motor rotor structure, comprising an iron core (1) and a rotating shaft (2), Features: A central hole for inserting a rotating shaft (2) is provided through the center of the iron core (1), the rotating shaft (2) is inserted into the central hole, and the bottom end of the rotating shaft (2) penetrates to the bottom of the iron core (1), a disassembly structure is provided between the rotating shaft (2) and the iron core (1), the disassembly structure comprises a through rod (4) and a limit retaining ring (5), through holes (21) corresponding to the through rod (4) are provided on both end surfaces of the rotating shaft (2), the through rod (4) penetrates the rotating shaft (2) through the through hole (21), and the two through rods (4) are respectively located at the top and bottom of the iron core (1), and limit retaining rings (5) are provided on the upper and lower surfaces of the iron core (1), and the limit retaining rings (5) cover the through rod (4) on the inner side.
2. A gasoline engine starter motor rotor structure according to claim 1, Features: An annular groove (6) is provided inside the upper and lower ends of the iron core (1), a spring A (8) and an annular movable seat (7) are arranged inside the annular groove (6), the annular movable seat (7) is movably installed in the annular groove (6) by means of a plurality of springs A (8), and the inner end of the limit retaining ring (5) penetrates into the inner side of the annular groove (6) and is fixed to the annular movable seat (7).
3. A gasoline engine starter motor rotor structure according to claim 2, Features: A plurality of limiting grooves A corresponding to the springs A (8) are formed on one side surface of the annular movable seat (7), and one end of the spring A (8) is inserted into the limiting groove A.
4. A gasoline engine starter motor rotor structure according to claim 2, Features: The inner wall of one end of the annular groove (6) is provided with a plurality of limiting grooves B corresponding to the spring A (8), and the other end of the spring A (8) is inserted into the limiting groove B.
5. A gasoline engine starter motor rotor structure according to claim 1, Features: The upper and lower surfaces of the iron core (1) are both provided with an annular notch communicating with the annular groove (6), and the annular notch corresponds to the limit retaining ring (5).
6. A gasoline engine starter motor rotor structure according to claim 1, Features: The disassembly and assembly structure also includes an auxiliary positioning structure, and the auxiliary positioning structure is arranged at the center hole of the iron core (1).
7. A gasoline engine starter motor rotor structure according to claim 6, Features: The auxiliary positioning structure comprises an inner groove (11), a spring B (12) and a telescopic bead (13); the inner groove (11) is provided on the inner wall of the middle hole; the telescopic bead (13) is movably installed in the inner groove (11) through the spring B (12); an annular groove (22) corresponding to the telescopic bead (13) is provided on the surface of the rotating shaft (2); and the end of the telescopic bead (13) pops out into the annular groove (22).
8. A gasoline engine starter motor rotor structure according to claim 1, Features: A plurality of winding grooves (3) are provided on the circumferential surface of the iron core (1).