Starting motor with rotor protection
By designing anti-skew components and sealing structures on the starter motor housing, the problems of easy deformation of the rotor shaft and dust ingress are solved, achieving vibration reduction and anti-skew effects, and ensuring stable operation of the rotor shaft.
Patent Information
- Application Number
- CN202520510240.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-22
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-03-22
AI Technical Summary
The existing starter motor housing lacks a design to reduce vibration and prevent rotor shaft skew, which makes the rotor shaft prone to deformation and wear, and allows dust and impurities to easily enter, affecting the normal operation of the equipment.
Anti-skew components are designed on the motor housing, including mounting rings, connecting rods, connecting rings, damping plates, and abutment plates. The elastic damping plates absorb vibration forces, the abutment plates limit the rotor shaft position, and the sealing rings and scrapers block dust and remove accumulated impurities.
It effectively reduces vibration, prevents rotor shaft misalignment and wear, prevents dust from entering, ensures stable rotor shaft operation, and extends equipment life.
Smart Images
Figure CN223798041U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of starter motor technology, specifically relating to a starter motor with rotor protection. Background Technology
[0002] The starter motor is an important device for starting the engine. Its principle is to convert electrical energy into mechanical energy, drive the engine crankshaft to rotate, and enable the engine to complete the four strokes of intake, compression, power and exhaust, thereby putting the engine into working condition. The starter motor is mainly composed of an electric motor, electromagnetic cover, drive gear, one-way clutch, housing and bracket. The rotor is an important component of the electric motor. The rotor is composed of rotor core, rotor winding, commutator and rotor shaft.
[0003] One of the common faults of the rotor shaft of a starter motor is rotor shaft deformation and wear. Under significant vibration, the rotor shaft deforms. In addition, external dust and impurities rub against the rotor shaft, which leads to rotor shaft wear, increases the gap between the rotor shaft and the housing, and easily causes leakage. The starter motor housing does not have a design to protect the rotor shaft, and cannot reduce the vibration force on the rotor shaft to achieve the purpose of limiting the position of the rotor shaft and preventing it from being deflected by vibration force, which is a shortcoming.
[0004] Existing starter motors have the problem that the motor housing lacks a design to reduce vibration and prevent rotor shaft skew. To address this, this application proposes a starter motor with rotor protection. Utility Model Content
[0005] The purpose of this invention is to provide a starter motor with rotor protection to solve the problem mentioned in the background art that the motor housing does not have a design to reduce vibration and limit the rotor shaft to prevent skew.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a starter motor with rotor protection, comprising...
[0007] The motor assembly includes a motor housing and a rotor shaft with one end inserted inside the motor housing, wherein a protrusion is provided on one end of the motor housing;
[0008] The anti-skew assembly includes a mounting ring sleeved on the outside of the protruding post, a first connecting rod evenly distributed on the inner surface of the mounting ring, a connecting ring fixedly connected to one end of the first connecting rod, a weakening plate fixedly connected to one end of the connecting ring, and an abutment plate fixedly connected to the other end of the weakening plate. End posts are welded to both ends of the weakening plate.
[0009] A fixing ring is fixed to the mounting ring by adhesive. The inner surface of the fixing ring is provided with symmetrically distributed second connecting rods and a sealing ring welded to one end of the second connecting rods. The fixing ring is provided with a limiting ring.
[0010] The rotating component includes a rotating ring rotatably connected to a fixed ring and a scraper mounted on the inner surface of the rotating ring.
[0011] Preferably, the mounting ring and the protrusion are fixed by screws, and the centers of the protrusion, mounting ring, fixing ring, rotating ring and rotor shaft are on the same axis.
[0012] Preferably, the weakening plate has a wavy, zigzag shape.
[0013] Preferably, the end posts at both ends of the weakening plate are connected to the connecting ring and the corresponding abutment plate by welding.
[0014] Preferably, the abutment plate is a three-dimensional block shape with an arc, and the inner curved surface of the abutment plate is in contact with the outer surface of the rotor shaft.
[0015] Preferably, the limiting ring is embedded inside the rotating ring, the rotating ring is rotatably connected to the limiting ring, the fixed ring and the rotating ring have the same diameter, and the inner diameter of the sealing ring is the same as the outer diameter of the rotor shaft.
[0016] Preferably, one end of the scraper is curved, and the curved end of the scraper is in contact with the outer surface of the sealing ring.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] In this invention, the motor housing has an anti-skew design that reduces vibration and limits the rotor shaft. With the coordinated action of the designed mounting ring, first connecting rod, connecting ring, damping plate and abutment plate, the rotor shaft is protected by limiting its position and preventing it from deflecting. The sealing ring prevents dust and impurities from falling onto the outer surface of the rotor shaft. By rotating the ring, the scraper can scrape off the impurities accumulated on the outer surface of the sealing ring, making it easy to clean. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this utility model;
[0020] Figure 2 This is a top view of the mounting ring of this utility model.
[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of section A in the middle;
[0022] Figure 4 This is a top view of the rotating ring of this utility model.
[0023] Figure 5 This is a cross-sectional view of the rotating ring of this utility model.
[0024] In the diagram: 1. Motor housing; 2. Rotor shaft; 3. Mounting ring; 4. Fixing ring; 5. Rotating ring; 6. First connecting rod; 7. Connecting ring; 8. Weakening plate; 9. Abutment plate; 11. Protruding post; 41. Second connecting rod; 42. Sealing ring; 43. Limiting ring; 51. Scraper; 81. End post. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figures 1 to 5This utility model provides a technical solution: a starter motor with rotor protection, including a motor assembly, including a motor housing 1 and a rotor shaft 2 inserted into the motor housing 1 at one end. The structure and principle of the starter motor driving the rotor shaft 2 to rotate are existing technologies and will not be described in detail in this application. A protrusion 11 is provided on one end of the motor housing 1, and one end of the rotor shaft 2 passes through the protrusion 11. The protrusion 11 is fixed to the motor housing 1 by bolts. The anti-skew assembly includes an mounting ring 3 sleeved on the outside of the protrusion 11, a first connecting rod 6 evenly distributed on the inner surface of the mounting ring 3, a connecting ring 7 fixedly connected to one end of the first connecting rod 6, a weakening plate 8 fixedly connected to the connecting ring 7 at one end, and an abutment plate 9 fixedly connected to the other end of the weakening plate 8. The mounting ring 3 and the protrusion 11 are fixed to form an integral structure. The abutment plate 9 is installed on the outside of the rotor shaft 2. The mounting ring 3, the first connecting rod 6, and the connecting ring 7 form a fixed integral structure. The weakening plate 8 is made of spring steel and has elasticity and a certain rigidity. The weakening plate 8 can support the abutment plate 9, and the abutment plate 9 limits the... The rotor shaft 2 is held in place by the abutment plate 9. When the rotor shaft 2 is vibrated and deviates, the abutment plate 9 restrains the rotor shaft 2. The tendency force of the rotor shaft 2 to deviate to one side is absorbed and weakened by the weakening plate 8, preventing the rotor shaft 2 from deflecting and thus preventing the rotor shaft 2 from deforming due to vibration. It has the function of protecting the rotor shaft 2. The weakening plate 8 has a wavy zigzag shape and can be folded, which has the effect of flexibly weakening the tendency force. End posts 81 are welded to both ends of the weakening plate 8. The fixing ring 4 is fixed to the mounting ring 3 by adhesive. The inner of the fixing ring 4 is... The surface is provided with symmetrically distributed second connecting rods 41 and sealing rings 42 welded to one end of the second connecting rods 41. The fixed ring 4 is provided with a limiting ring 43. The sealing ring 42 is sleeved on the outside of the rotor shaft 2 to achieve the effect of preventing dust and impurities from falling onto the outer surface of the rotor shaft 2. The rotating component includes a rotating ring 5 rotatably connected to the fixed ring 4 and a scraper 51 installed on the inner surface of the rotating ring 5. When the rotating ring 5 rotates, the scraper 51 rotates accordingly. The scraper 51 can scrape off the impurities accumulated on the outer surface of the sealing ring 42, which is convenient for cleaning.
[0027] In this embodiment, the mounting ring 3 and the protrusion 11 are fixed by screws. The center of the protrusion 11, the mounting ring 3, the fixing ring 4, the rotating ring 5 and the rotor shaft 2 are on the same axis, and the mounting ring 3, the fixing ring 4 and the rotating ring 5 are accurately installed.
[0028] In this embodiment, the weakening plate 8 is in the shape of a wavy zigzag line. The weakening plate 8 is made of spring steel and has elasticity and a certain rigidity. The weakening plate 8 can support the abutment plate 9. The weakening plate 8 is in the shape of a wavy zigzag line and can be folded, which has the effect of flexibly weakening the tendency force.
[0029] In this embodiment, the end posts 81 at both ends of the weakening plate 8 are welded to the connecting ring 7 and the corresponding abutment plate 9, respectively. The end posts 81 facilitate the fixation of the weakening plate 8.
[0030] In this embodiment, the abutment plate 9 is a three-dimensional block shape with an arc. The inner curved arc surface of the abutment plate 9 is in contact with the outer surface of the rotor shaft 2. The abutment plate 9 and the rotor shaft 2 are in surface contact, and the contact area is large.
[0031] In this embodiment, the limiting ring 43 is embedded inside the rotating ring 5, and the rotating ring 5 is rotatably connected to the limiting ring 43. The fixed ring 4 and the rotating ring 5 have the same diameter. The inner diameter of the sealing ring 42 is the same as the outer diameter of the rotor shaft 2. One end of the scraper 51 is curved, and the curved end of the scraper 51 fits against the outer surface of the sealing ring 42. The sealing ring 42 is sleeved on the outside of the rotor shaft 2 to prevent dust and impurities from falling onto the outer surface of the rotor shaft 2. When the rotating ring 5 rotates, the scraper 51 rotates accordingly. The scraper 51 can scrape off the impurities accumulated on the outer surface of the sealing ring 42, making it easy to clean.
[0032] Working principle and usage process of this utility model:
[0033] The rotor shaft 2 on the motor housing 1 rotates, and the abutment plate 9 is installed on the outside of the rotor shaft 2;
[0034] The weakening plate 8 is made of spring steel material with elasticity and a certain rigidity. The weakening plate 8 supports the abutment plate 9, and the abutment plate 9 limits the rotor shaft 2.
[0035] When the rotor shaft 2 is vibrated and deflected, the abutment plate 9 restricts the rotor shaft 2, and the tendency force of the rotor shaft 2 to deflect to one side is absorbed and weakened by the weakening plate 8, so as to prevent the rotor shaft 2 from deflecting.
[0036] The weakening plate 8 has a wavy, zigzag shape and can be folded, which has the effect of flexibly weakening the tendency force.
[0037] The sealing ring 42 is fitted on the outside of the rotor shaft 2 to prevent dust and impurities from falling onto the outer surface of the rotor shaft 2.
[0038] Rotating the ring 5 causes the scraper 51 to rotate as well. The scraper 51 can scrape off the impurities accumulated on the outer surface of the sealing ring 42, making it easy to clean.
[0039] In summary: The motor housing 1 has an anti-skew design that reduces vibration and limits the rotor shaft 2. With the coordinated action of the designed mounting ring 3, first connecting rod 6, connecting ring 7, weakening plate 8 and abutment plate 9, the rotor shaft 2 is protected and its position is limited to prevent it from deflecting. The sealing ring 42 prevents dust and impurities from falling onto the outer surface of the rotor shaft 2. By rotating the ring 5, the scraper 51 can scrape off the impurities accumulated on the outer surface of the sealing ring 42, making it easy to clean.
[0040] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A starting motor with rotor protection, characterized in that: Comprising The motor assembly comprises a motor housing (1) and a rotor shaft (2) inserted into the inside of the motor housing (1), and a convex column (11) is arranged on one end of the motor housing (1); The anti-deflection assembly comprises a mounting ring (3) sleeved outside the convex column (11), first connecting rods (6) uniformly distributed on the inner surface of the mounting ring (3), a connecting ring (7) fixedly connected to one end of the first connecting rod (6), a weakening plate (8) fixedly connected to one end of the connecting ring (7), and an abutting plate (9) fixedly connected to the other end of the weakening plate (8), wherein both ends of the weakening plate (8) are welded with end columns (81); A fixed ring (4) is fixedly connected to the mounting ring (3) by glue, and the inner surface of the fixed ring (4) is provided with symmetrically distributed second connecting rods (41) and sealing rings (42) welded to one end of the second connecting rods (41); The rotating member comprises a rotating ring (5) rotatably connected to the fixed ring (4) and a scraper (51) mounted on the inner surface of the rotating ring (5).
2. A starting motor with rotor protection according to claim 1, characterized in that: The mounting ring (3) is fixedly connected to the convex column (11) by screws, and the convex column (11), the mounting ring (3), the fixed ring (4), the rotating ring (5) and the rotor shaft (2) are arranged on the same axis.
3. A starting motor with rotor protection according to claim 1, characterized in that: The weakening plate (8) is in the shape of a wavy broken line.
4. A starting motor with rotor protection according to claim 1, characterized in that: The end columns (81) at both ends of the weakening plate (8) are respectively connected to the connecting ring (7) and the corresponding abutting plate (9) by welding.
5. A starting motor with rotor protection according to claim 1, characterized in that: The abutting plate (9) is in the shape of a three-dimensional block with a circular arc, and the inner curved surface of the abutting plate (9) is attached to the outer surface of the rotor shaft (2).
6. A starting motor with rotor protection according to claim 1, characterized in that: The limiting ring (43) is embedded in the inside of the rotating ring (5), the rotating ring (5) is rotatably connected to the limiting ring (43), the diameters of the fixed ring (4) and the rotating ring (5) are the same, and the inner diameter of the sealing ring (42) is the same as the outer diameter of the rotor shaft (2).
7. A starting motor with rotor protection according to claim 1 characterized in that: One end of the scraper (51) is in a curved shape, and the curved end of the scraper (51) is attached to the outer surface of the sealing ring (42).