Starter stator shell multi-sealing mechanism

Abstract

The invention discloses a multiple sealing mechanism for a starter stator shell, and relates to the field of starter stators, and the outer side of a stator shell body is provided with a reserved external butt joint piece; the outer side of the reserved external butt joint piece is in threaded butt joint with a fastening butt joint bolt assembly, and the fastening butt joint bolt assembly is in butt joint with the inner side of the stator shell body. According to the multiple sealing mechanism for the stator shell of the starter, in the butt joint process of the stator shell body and the reserved external butt joint piece, the inner side of the reserved external butt joint piece is in butt joint with the inner side of the stator shell body in an attached mode through the rubber nesting attaching butt joint piece, and a preliminary sealing structure is formed through the rubber nesting attaching butt joint piece; the defect that a certain gap exists in a butt joint gap due to the fact that installation work is carried out mostly through fastening bolts traditionally is overcome, a follow-up multiple sealing structure is matched, the phenomenon of oil leakage or water vapor entering in the working process of the interior of equipment is avoided, and internal components such as a rotor are efficiently protected.

Description

Technical Field

[0001] This invention relates to the field of starter stator technology, specifically to a multi-seal mechanism for a starter stator housing. Background Technology

[0002] The starter motor, also called a motor, converts the electrical energy of the battery into mechanical energy to drive the engine flywheel to rotate and start the engine. The starter stator housing needs to be installed with bolts during the installation process to assemble the housings.

[0003] For example, the patent with announcement number CN219509863U describes a high-speed fan with a fully sealed rotor and stator, including a housing, a stator engaged in the middle of the inner side of the housing, a coil on the stator, a rear fixing bracket engaged in one end of the inner side of the housing, the rear fixing bracket corresponding to the stator, a PCB board on one end of the housing, the PCB board corresponding to the rear fixing bracket, a second bearing fixedly mounted on the inner side of the rear fixing bracket, and an impeller shaft fixedly mounted on the inner side of the second bearing. This design effectively prevents the stator and rotor from affecting the airflow of the entire machine, and better prevents noise and vibration during high-speed operation of the fan. At the same time, by fixing the outer ring of the first bearing to the housing, fixing its inner ring to the impeller, and connecting the end of the impeller shaft to the inner hole of the impeller, the impact of the impeller shaft being pressed in on the dynamic balance of the impeller can be reduced, and the vibration generated during high-speed operation of the fan blades can be reduced.

[0004] For example, the patent with announcement number CN206313548U describes a sealed stator for a water pump motor, which includes a housing and a stator assembly and a control board disposed within the housing. The housing includes a plate-shaped base, and a cylindrical rotor cavity with an opening facing forward extends rearward from the center of the base. The outer periphery of the base extends rearward to form an outer shell surrounding the rotor cavity. An annular stator cavity with an opening facing backward is formed between the inner wall of the outer shell and the outer wall of the rotor cavity. The stator assembly is disposed within the stator cavity. The control board, which is electrically connected to the stator winding, is mounted on a limiting step at the rear end of the outer shell. The control board is filled with a sealing layer. The stator is completely sealed, has high reliability, and the stator winding wiring is convenient and the structure is compact, which improves the reliability and safety performance of the motor and has high practical value.

[0005] For example, the patent with publication number CN113452186B discloses an underwater motor stator sealing assembly, which includes a housing and an inner protective sleeve coaxially fitted inside the housing. An annular mounting cavity is formed between the housing and the inner protective sleeve. The stator is installed in the annular mounting cavity. Shaft end sealing resin is filled at both ends of the annular mounting cavity to encapsulate the stator in the annular mounting cavity. Each sealing resin is injected to bond with each other or with the motor, thereby improving the stability of the sealing resin and improving the pressure-bearing sealing performance of the underwater motor.

[0006] Most of the aforementioned existing technologies improve the overall structure. However, the existing starter stator housing is mostly installed by fastening bolts during operation. There is a certain gap at the joint, which makes it easy for oil or water vapor to seep in during operation, thereby damaging internal components such as the rotor, thus limiting its use. Summary of the Invention

[0007] The purpose of this invention is to provide a multi-seal mechanism for the stator housing of a starter motor, in order to solve the problem mentioned in the background art that most of these mechanisms are installed by fastening bolts, and there is a certain gap at the joint, which makes it easy for oil or water vapor to enter during internal operation, thereby damaging internal components such as the rotor.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multi-seal mechanism for a starter stator housing, comprising a stator housing body, wherein a reserved external mating component is installed on the outer side of the stator housing body; a fastening mating bolt assembly is threadedly connected to the outer side of the reserved external mating component, and the fastening mating bolt assembly is mated with the inner side of the stator housing body; a horizontal reserved guide groove is provided on the inner side of the stator housing body, and the horizontal reserved guide groove corresponds to the end position of the fastening mating bolt assembly; an auxiliary self-positioning structure is provided between the stator housing body and the reserved external mating component, and the auxiliary positioning structure performs auxiliary lateral self-positioning processing between the stator housing body and the reserved external mating component.

[0009] Furthermore, the auxiliary self-positioning structure is provided with a built-in docking movable component, which is nested and docked inside the horizontally reserved guide groove, and the end positions of the built-in docking movable component and the fastening docking bolt assembly correspond to each other.

[0010] Furthermore, the inner end of the reserved external docking component is bonded with a rubber nested fitting docking component, and the rubber nested fitting docking component is nested and docked with the inner side of the stator housing body. The surface of the rubber nested fitting docking component is provided with a reserved through hole. A vertical positioning docking component is nested and installed on the inner side of the stator housing body, and a return spring is fixedly connected to the outer side of the vertical positioning docking component. The return spring docks with the inner side of the stator housing body. The position of the vertical positioning docking component corresponds to the inner side of the reserved through hole.

[0011] Furthermore, the inner side of the reserved external docking component is fitted and docked with the inner side of the stator housing body through a rubber nesting docking component, forming a preliminary sealing structure through the rubber nesting docking component. During the inward movement of the fastening docking bolt assembly, pressure is applied to the contacting internal docking movable component, and the internal docking movable component slides laterally along the inner side of the horizontal reserved guide groove.

[0012] Furthermore, during the inward movement of the built-in docking movable component, the inclined vertical positioning docking component is pushed to slide vertically along the inner side of the stator housing body, and the outer side of the vertical positioning docking component forms an elastic support structure through the return spring. The vertical positioning docking component forms a positioning structure along the inner side of the rubber nesting docking component through the reserved through hole, allowing the built-in docking movable component to push the inclined vertical positioning docking component to slide vertically along the inner side of the stator housing body, thereby allowing the vertical positioning docking component to form a positioning structure along the inner side of the rubber nesting docking component through the reserved through hole.

[0013] Furthermore, the inner side of the stator housing body is provided with a multi-seal structure to ensure the seal between the stator housing body and the reserved external docking parts. The multi-seal structure is provided with a built-in liquid bladder assembly, which is located inside the horizontal reserved guide groove. The outer position of the horizontal reserved guide groove corresponds to the position of the built-in docking movable part. The initial sealing structure is formed by the rubber nesting and bonding of the docking parts, avoiding the disadvantage of the gap at the joint of the traditional installation work which mostly relies on fastening bolts. This effectively cooperates with the subsequent multi-seal structure.

[0014] Furthermore, an external liquid bladder assembly is bonded to the inner wall of the stator housing body, and a supply pipe is connected to the outer side of the external liquid bladder assembly. The supply pipe passes through the inner side of the stator housing body and is connected to the internal liquid bladder assembly.

[0015] Furthermore, as the built-in docking movable component moves along the inner side of the horizontally reserved guide groove under force, it simultaneously applies pressure to the contacting built-in liquid bladder assembly.

[0016] Furthermore, during the pressurization process, the built-in liquid bladder assembly supplies liquid to the interior of the external liquid bladder assembly through the supply pipe, and the expansion of the external liquid bladder assembly fills and connects the inner wall of the stator housing body with the rubber nesting mating part.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] This starter stator housing has a multi-seal mechanism. During the connection process between the stator housing body and the reserved external connecting parts, the inner side of the reserved external connecting parts will be connected to the inner side of the stator housing body through rubber nesting fitting. The rubber nesting fitting forms a preliminary sealing structure, avoiding the disadvantage of the gaps at the joints of traditional installations that mostly rely on fastening bolts. It effectively cooperates with the subsequent multi-seal structure to prevent oil leakage or water vapor from entering the internal components of the equipment during operation. It effectively protects the internal components such as the rotor and improves the practicality of the device.

[0019] Furthermore, an auxiliary self-positioning structure is also provided. This structure provides auxiliary lateral self-positioning between the stator housing and the reserved external docking parts. As the fastening bolt assembly moves inward along the inner side of the stator housing, its end will simultaneously apply pressure to the contacting internal docking movable part. This causes the internal docking movable part to push the vertically positioned docking part with an inclined structure to slide vertically along the inner side of the stator housing. This allows the vertically positioned docking part to form a positioning structure along the inner side of the rubber nesting docking part through the reserved through hole. In the process of lateral thread locking, the vertically positioned docking part performs multiple vertical positioning treatments to prevent it from easily loosening during the process.

[0020] Furthermore, a multi-seal structure is provided. During the process of the built-in docking movable part being stressed and moving along the inner side of the horizontal reserved guide groove, its end will simultaneously apply pressure to the contacting built-in liquid bladder assembly. This allows the stressed built-in liquid bladder assembly to supply work to the interior of the external liquid bladder assembly through the supply pipe, thereby causing the external liquid bladder assembly to expand and fill the gap between the inner wall of the stator housing body and the rubber nested mating part. The multi-seal structure ensures the seal between the stator housing body and the reserved external mating part. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the half-section three-dimensional structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A magnified schematic diagram of the central part of the structure;

[0024] Figure 4 This is a three-dimensional structural diagram of the vertical positioning docking component of the present invention;

[0025] Figure 5 This is a three-dimensional structural diagram of the fastening bolt assembly of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the built-in liquid bladder assembly of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the external liquid bladder assembly of the present invention;

[0028] Figure 8 This is a partial three-dimensional structural diagram of the external docking component reserved in this invention.

[0029] In the diagram: 1. Stator housing body; 2. Reserved external docking component; 3. Fastening docking bolt assembly; 4. Horizontal reserved guide groove; 5. Internal docking movable component; 6. Return spring; 7. Vertical positioning docking component; 8. Rubber nested bonding docking component; 9. Reserved through hole; 10. Internal liquid bladder assembly; 11. Supply pipe; 12. External liquid bladder assembly. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example 1: Please refer to Figures 1-8 The present invention provides the following technical solution: a multi-seal mechanism for a starter stator housing, wherein a reserved external docking part 2 is installed on the outer side of the stator housing body 1; a fastening docking bolt assembly 3 is threadedly connected to the outer side of the reserved external docking part 2, and the fastening docking bolt assembly 3 is connected to the inner side of the stator housing body 1; a horizontal reserved guide groove 4 is provided on the inner side of the stator housing body 1, and the horizontal reserved guide groove 4 corresponds to the end position of the fastening docking bolt assembly 3; an auxiliary self-positioning structure is provided between the stator housing body 1 and the reserved external docking part 2, and the auxiliary positioning structure performs auxiliary lateral self-positioning processing between the stator housing body 1 and the reserved external docking part 2.

[0032] The auxiliary self-positioning structure is equipped with a built-in docking movable part 5, which is nested and docked inside the horizontally reserved guide groove 4. The end position of the built-in docking movable part 5 corresponds to that of the fastening docking bolt assembly 3. The inner end of the reserved external docking part 2 is bonded with a rubber nested bonding docking part 8, which is nested and docked inside the stator housing body 1. The surface of the rubber nested bonding docking part 8 is provided with a reserved through hole 9. A vertical positioning docking part 7 is nested and installed inside the stator housing body 1. A return spring 6 is fixedly connected to the outer side of the vertical positioning docking part 7, and the return spring 6 docks with the inner side of the stator housing body 1. The position of the vertical positioning docking part 7 corresponds to that of the inner side of the reserved through hole 9. The inner side of the reserved external docking part 2 is connected to the inner side of the stator housing body 1 by the rubber nesting and bonding docking part 8. The rubber nesting and bonding docking part 8 forms a preliminary sealing structure. During the process of the tightening docking bolt assembly 3 moving inward, pressure is applied to the contacting internal docking movable part 5, and the internal docking movable part 5 slides laterally along the inner side of the horizontal reserved guide groove 4. During the inward movement of the built-in docking movable part 5, the vertical positioning docking part 7 with its inclined structure slides vertically along the inner side of the stator housing body 1. The outer side of the vertical positioning docking part 7 forms an elastic support structure through the return spring 6. The vertical positioning docking part 7 forms a positioning structure along the inner side of the rubber nesting docking part 8 through the reserved through hole 9. During the docking process between the stator housing body 1 and the reserved external docking part 2, the inner side of the reserved external docking part 2 will be bonded to the inner side of the stator housing body 1 through the rubber nesting docking part 8. The rubber nesting docking part 8 forms a preliminary sealing structure, avoiding the drawback of traditional installations that mostly rely on bolts and have gaps at the joints. This effectively complements the subsequent multiple sealing structures, preventing internal leaks in the equipment. During operation, if oil or water vapor seepage occurs, the system effectively protects internal components such as the rotor. An auxiliary positioning structure provides lateral self-positioning between the stator housing 1 and the pre-installed external docking component 2. As the fastening bolt assembly 3 moves inward along the inner side of the stator housing 1, its end simultaneously applies pressure to the contacting internal docking movable component 5. This causes the internal docking movable component 5 to push the vertically positioned docking component 7, which has an inclined structure, to slide vertically along the inner side of the stator housing 1. The vertically positioned docking component 7 then forms a positioning structure along the inner side of the rubber-nested docking component 8 through the pre-installed through hole 9. Furthermore, during the lateral thread locking process, the vertically positioned docking component 7 performs multiple vertical positioning operations, preventing easy loosening during the process.

[0033] Example 2: Based on Example 1, a multi-layer sealing structure is also disclosed, the specific structure of which is as follows:

[0034] The inner side of the stator housing body 1 is provided with a multi-seal structure, which ensures the sealing between the stator housing body 1 and the reserved external docking part 2.

[0035] The multi-sealing structure includes a built-in liquid bladder assembly 10, which is positioned inside the horizontally reserved guide groove 4. The outer side of the horizontally reserved guide groove 4 corresponds to the position of the built-in docking movable part 5. An external liquid bladder assembly 12 is bonded to the inner wall of the stator housing body 1, and a supply pipe 11 is docked to the outer side of the external liquid bladder assembly 12. The supply pipe 11 passes through the inner side of the stator housing body 1 and is interconnected with the built-in liquid bladder assembly 10. During the movement of the built-in docking movable part 5 along the inner side of the horizontally reserved guide groove 4, it simultaneously applies pressure to the contacting built-in liquid bladder assembly 10. During the pressurization process, the built-in liquid bladder assembly 10 supplies liquid to the interior of the external liquid bladder assembly 12 through the supply pipe 11, and the external liquid bladder assembly 12 expands to fill and connect with the inner wall of the stator housing body 1 and the rubber nested fitting docking part 8. During the process of the built-in docking movable part 5 being forced to move along the inner side of the horizontal reserved guide groove 4, its end will simultaneously apply pressure to the contacting built-in liquid bladder assembly 10, so that the pressurized built-in liquid bladder assembly 10 supplies liquid to the interior of the external liquid bladder assembly 12 through the supply pipe 11, thereby causing the external liquid bladder assembly 12 to expand and fill and connect with the inner wall of the stator housing body 1 and the rubber nested fitting docking part 8. The sealing between the stator housing body 1 and the reserved external docking part 2 is guaranteed by the multiple sealing structure.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-seal mechanism for a starter stator housing, comprising a stator housing body (1), wherein a reserved external docking part (2) is installed on the outer side of the stator housing body (1); Its features are: The reserved external docking part (2) has a fastening docking bolt assembly (3) threadedly connected to its outer side, and the fastening docking bolt assembly (3) is connected to the inner side of the stator housing body (1). The inner side of the stator housing body (1) is provided with a horizontal reserved guide groove (4), and the horizontal reserved guide groove (4) corresponds to the end position of the fastening docking bolt assembly (3). An auxiliary self-positioning structure is provided between the stator housing body (1) and the reserved external docking part (2). The auxiliary positioning structure is used to perform auxiliary lateral self-positioning between the stator housing body (1) and the reserved external docking part (2).

2. The multi-seal mechanism for a starter stator housing according to claim 1, characterized in that: The auxiliary self-positioning structure is provided with a built-in docking movable part (5), and the built-in docking movable part (5) is nested and docked inside the horizontal reserved guide groove (4), and the end position of the built-in docking movable part (5) corresponds to that of the fastening docking bolt assembly (3).

3. The multi-seal mechanism for a starter stator housing according to claim 2, characterized in that: The inner end of the reserved external docking part (2) is bonded with a rubber nested bonding docking part (8), and the rubber nested bonding docking part (8) is nested and docked with the inner side of the stator housing body (1). The surface of the rubber nested bonding docking part (8) is provided with a reserved through hole (9). A vertical positioning docking piece (7) is nested inside the stator housing body (1), and a return spring (6) is fixedly connected to the outside of the vertical positioning docking piece (7). The return spring (6) and the inside of the stator housing body (1) are connected to each other, and the vertical positioning docking piece (7) corresponds to the inner position of the reserved through hole (9).

4. The multi-seal mechanism for a starter stator housing according to claim 3, characterized in that: The inner side of the reserved external docking part (2) is fitted and docked with the inner side of the stator housing body (1) through the rubber nested bonding docking part (8). The rubber nested bonding docking part (8) forms a preliminary sealing structure. During the inward movement of the fastening docking bolt assembly (3), pressure is applied to the contacting built-in docking movable part (5), and the built-in docking movable part (5) slides laterally along the inner side of the horizontal reserved guide groove (4).

5. The multi-seal mechanism for a starter stator housing according to claim 4, characterized in that: During the inward movement of the built-in docking movable part (5), the vertical positioning docking part (7) with the inclined structure is pushed to slide vertically along the inner side of the stator housing body (1), and the outer side of the vertical positioning docking part (7) forms an elastic support structure through the return spring (6). The vertical positioning docking part (7) forms a positioning structure along the inner side of the rubber nesting and bonding docking part (8) through the reserved through hole (9).

6. The multi-seal mechanism for a starter stator housing according to claim 3, characterized in that: The stator housing body (1) is provided with a multi-seal structure on its inner side, which ensures the seal between the stator housing body (1) and the reserved external docking part (2). The multi-seal structure is provided with a built-in liquid bladder assembly (10), and the built-in liquid bladder assembly (10) is located inside the horizontal reserved guide groove (4), and the outer position of the horizontal reserved guide groove (4) corresponds to the position of the built-in docking movable part (5).

7. The multi-seal mechanism for a starter stator housing according to claim 6, characterized in that: An external liquid bladder assembly (12) is bonded to the inner wall of the stator housing body (1), and a supply pipe (11) is connected to the outer side of the external liquid bladder assembly (12). The supply pipe (11) passes through the inner side of the stator housing body (1), and the supply pipe (11) is connected to the internal liquid bladder assembly (10).

8. The multi-seal mechanism for a starter stator housing according to claim 7, characterized in that: As the built-in docking movable part (5) moves along the inner side of the horizontal reserved guide groove (4) under force, it simultaneously applies pressure to the contacting built-in liquid bladder assembly (10).

9. A multi-seal mechanism for a starter stator housing according to claim 8, characterized in that: During the process of being compressed, the built-in liquid bladder assembly (10) supplies liquid to the interior of the external liquid bladder assembly (12) through the supply pipe (11), and the external liquid bladder assembly (12) expands to fill and connect the inner wall of the stator housing body (1) with the rubber nesting bonding docking part (8).

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