A bidirectional positioning wave pad for an electric machine of an internal combustion engine system
Patent Information
- Application Number
- CN202522236295.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0016] Compared with existing technologies, this utility model has the following advantages: Through the coordinated design of the pad, positioning edge A, and positioning edge B, this utility model constitutes a highly efficient, multi-functional positioning and vibration damping structure. This structure can simultaneously achieve precise bidirectional positioning of the motor and effective buffering of vibration impacts, while compensating for the machining tolerances of the protective shell. Specific technical effects include the following:
Smart Images
Figure CN224760064U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of exhaust valve motor positioning accessories, specifically a bidirectional positioning wave pad for an internal combustion engine system motor. Background Technology
[0002] In various systems that use internal combustion engines as a power source, such as stationary generator sets, engineering machinery power systems, marine auxiliary power units, and industrial internal combustion engine equipment, the exhaust valve motor is usually installed inside the engine compartment. This compartment is the concentrated area for the internal combustion engine and related auxiliary components. During equipment operation, the engine compartment continuously experiences complex and harsh operating conditions such as high temperatures, strong mechanical vibrations, and impacts.
[0003] Specifically, engines generate significant periodic mechanical vibrations and transient impact loads during operation. These vibrations primarily originate from the combustion explosion within the engine itself, the movement of the crankshaft and connecting rod mechanism, the operation of the valve train, and the operation of accessories such as the cooling fan. Simultaneously, the equipment may be subjected to additional structural impacts during startup, sudden load changes, or abnormal operating conditions, such as uneven thermal expansion and mechanical stress release. Furthermore, due to the engine's own high-temperature radiation and limited air circulation within the engine compartment, the engine compartment is often in a high-temperature environment for extended periods.
[0004] In this working environment, the exhaust valve motor is connected and fixed to the external protective housing (usually a metal stretched shell) via its metal casing. However, current installation structures generally suffer from the following technical problems:
[0005] Lack of effective two-way positioning structure: The motor housing and the external protective housing are usually installed using only simple contact fit or a single layer of ordinary gaskets, without a dedicated axial and radial limiting structure. Under continuous vibration and impact, the motor is prone to axial movement (vertical displacement) or radial offset (horizontal sway), causing changes in the relative position between the motor and related mechanical actuators (such as valves and linkage devices), affecting the accuracy of the exhaust valve's operation and the system's synchronization.
[0006] The machining errors of the protective housing are difficult to compensate for: the external protective housing is mostly made of metal stretching process, which makes it difficult to guarantee high dimensional accuracy and shape consistency, and there are certain machining tolerances and local deformations. If the motor iron shell is installed in direct rigid contact with such a housing, it is easy to cause stress concentration, abnormal noise, surface wear due to local stress concentration, and even loosening of the connection or structural damage during long-term operation.
[0007] Traditional positioning / vibration damping solutions are limited in function: Currently used installation methods, such as ordinary flat washers, unidirectional limiting washers, and simple rubber pads, often only provide limited support or buffering in one of the axial or radial directions, failing to simultaneously ensure stability and isolation in both directions. Under complex operating conditions involving both high temperatures and strong vibrations, this single-function positioning structure cannot effectively guarantee the long-term reliable operation of the motor, resulting in a significant decrease in the overall reliability of the system.
[0008] Therefore, how to design a positioning structure that is simple in structure and has both bidirectional positioning and tolerance compensation functions to improve the installation stability, vibration reduction performance and assembly adaptability of the exhaust valve motor has become a technical problem that urgently needs to be solved in this field. Utility Model Content
[0009] The purpose of this invention is to provide a bidirectional positioning wave pad for an internal combustion engine system motor, in order to solve the problem that the existing motor mounting structure is prone to axial movement, radial displacement, and abnormal wear under vibration and high temperature conditions due to the lack of effective bidirectional positioning and elastic buffering.
[0010] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional positioning wave pad for an internal combustion engine system motor. The bidirectional positioning wave pad is configured as a composite structural component with bidirectional limiting and elastic buffering functions, and is used to fix the internal combustion engine exhaust valve motor, compensate for the tolerance of the protective housing, and isolate vibration and impact. The composite structural component includes a pad body and positioning edge A and positioning edge B, wherein: the pad body is a circular thin metal plate base with a mounting positioning groove in the middle; positioning edge A and positioning edge B are integrally formed in the axial and radial directions of the pad body.
[0011] Preferably, positioning edge A is adjacent to the mounting positioning groove, and positioning edge A is folded outward along the axial direction to form an annular limiting flange. This annular limiting flange mates with the iron shell end of the internal combustion engine exhaust valve motor. Through the full circumferential contact between the annular limiting flange and the end face of the motor iron shell, a uniform axial constraint force is formed, effectively suppressing the axial movement of the motor under vibration conditions and ensuring the stability of the motor shaft connection. The folded annular structure provides rigid limiting while its thin-walled characteristics provide a small amount of elastic deformation capability, which can both compensate for the flatness error of the mounting surface and absorb axial impact energy.
[0012] Preferably, the positioning edge B is arched, with its arched portion fitting against the circumferential surface of the motor's exhaust valve housing. The extensions at the upper and lower ends of the arched portion extend outwards and fit against the inner wall of the protective housing. The arched portion maintains surface contact with the circumferential surface of the motor's housing, achieving precise radial positioning while effectively absorbing radial vibration energy through the elastic deformation of the arched structure. The upper and lower extensions form a double-fit interface with the inner wall of the protective housing, adaptively compensating for radial assembly tolerances between the motor's housing and the protective housing.
[0013] Preferably, the mounting positioning groove includes a central groove and notches distributed along the outer periphery of the central groove.
[0014] Preferably, the inner side of the arched portion of positioning edge B is provided with several raised elastic contacts. These multiple elastic contacts can adaptively compensate for microscopic unevenness and shape deviations of the circumferential surface of the motor housing and the inner wall of the protective housing. Even with minor dimensional fluctuations or geometric tolerances, stable and reliable fit can be ensured through the elastic deformation of some contacts, improving the assembly consistency and reliability of the product.
[0015] Preferably, the pad body and positioning edges A and B are made of spring steel. Spring steel has a high elastic limit and anti-relaxation properties, ensuring that the positioning wave pad maintains sufficient axial preload and radial clamping force on the motor under the long-term high temperature and vibration conditions in the engine compartment, avoiding positioning failure due to material creep. In addition, compared with ordinary structural steel or rubber materials, spring steel can maintain stable elastic modulus and mechanical properties in the range of -40℃ to +120℃, effectively overcoming problems such as rubber aging and plastic creep, and ensuring long-term operational reliability in the high-temperature environment of the engine compartment.
[0016] Compared with existing technologies, this utility model has the following advantages: Through the coordinated design of the pad, positioning edge A, and positioning edge B, this utility model constitutes a highly efficient, multi-functional positioning and vibration damping structure. This structure can simultaneously achieve precise bidirectional positioning of the motor and effective buffering of vibration impacts, while compensating for the machining tolerances of the protective shell. Specific technical effects include the following:
[0017] 1. The tight fit between the annular limiting flange of positioning edge A and the end of the motor housing effectively restricts the axial movement of the motor and ensures installation stability.
[0018] 2. By using the arc-shaped arched structure of positioning edge B and its extension, precise radial positioning is achieved while absorbing vibration energy through elastic deformation and adaptively compensating for shell tolerances, thus avoiding local stress concentration. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2This is a schematic diagram of the internal combustion engine exhaust valve motor and composite structural component in Embodiment 1 of this utility model;
[0022] Figure 3 This is a schematic diagram of the composite structure in Embodiment 1 of this utility model;
[0023] Figure 4 This is a schematic diagram illustrating the application of this utility model.
[0024] In the picture:
[0025] 1. Internal combustion engine exhaust valve motor; 2. Protective housing; 3. Gasket; 301. Mounting positioning groove; 4. Positioning edge A; 5. Positioning edge B. Detailed Implementation
[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0027] As attached Figure 1 To be continued Figure 4 As shown:
[0028] Example 1: This utility model provides a bidirectional positioning wave pad for an internal combustion engine system motor. The bidirectional positioning wave pad is configured as a composite structural component with bidirectional limiting and elastic buffering functions, and is used to fix the internal combustion engine exhaust valve motor 1, compensate for the tolerance of the protective housing 2, and isolate vibration and impact. The composite structural component includes a pad body 3 and positioning edges A4 and B5, wherein: the pad body 3 is a circular thin metal plate base with a mounting positioning groove 301 in the middle; positioning edges A4 and B5 are integrally formed in the axial and radial directions of the pad body 3; positioning edge A4 is adjacent to the mounting positioning groove 301, and positioning edge A4 is folded outward along the axial direction to form an annular limiting flange, which cooperates with the iron shell end of the internal combustion engine exhaust valve motor 1. The annular limiting flange makes full circumferential contact with the end face of the motor housing, forming a uniform axial constraint force, effectively suppressing the axial movement of the motor under vibration conditions and ensuring the stability of the motor shaft connection. The folded annular structure provides rigid limiting while its thin-walled nature allows for slight elastic deformation, compensating for flatness errors on the mounting surface and absorbing axial impact energy. Positioning edge B5 is arched, with its arched portion fitting against the circumferential surface of the internal combustion engine exhaust valve motor 1's housing. The extensions at the upper and lower ends of the arched portion extend outwards and fit against the inner wall of the protective housing 2. The arched portion maintains surface contact with the circumferential surface of the motor housing, achieving precise radial positioning while effectively absorbing radial vibration energy through the elastic deformation of the arched structure. The upper and lower extensions form a double-fit interface with the inner wall of the protective housing 2, adaptively compensating for radial assembly tolerances between the motor housing and the protective housing 2.
[0029] 1. In one embodiment of the present invention, the mounting positioning groove 301 includes a central groove and notch grooves distributed on the outer periphery of the central groove.
[0030] 2. In one embodiment of this utility model, the pad 3 and the positioning edges A4 and B5 are made of spring steel. Spring steel has a high elastic limit and anti-relaxation performance, ensuring that the positioning wave pad maintains sufficient axial preload and radial clamping force on the motor under long-term high temperature and vibration conditions in the engine compartment, avoiding positioning failure due to material creep. In addition, compared with ordinary structural steel or rubber materials, spring steel can maintain stable elastic modulus and mechanical properties in the range of -40℃ to +120℃, effectively overcoming problems such as rubber aging and plastic creep, and ensuring long-term working reliability in the high temperature environment of the engine compartment.
[0031] Working Principle: In Example 1, the bidirectional positioning wave pad achieves precise fixation and protection of the motor through the synergistic effect of its structural design and material properties. During installation, the motor housing is initially positioned by embedding it into the middle groove of the mounting positioning slot 301. During operation, the annular limiting flange of positioning edge A4 constrains the axial movement of the motor through continuous elastic pressure, while the arched structure of positioning edge B5 suppresses radial displacement of the motor and absorbs vibration through radial elastic deformation. When dealing with tolerances, the notch and the extension of positioning edge B5 adaptively compensate for housing size deviations through elastic deformation, ensuring stable contact. The entire mechanism maintains motor positioning accuracy and connection reliability under high temperature and vibration environments.
[0032] Example 2: This example is basically the same as the previous example, except that the inner side of the arched portion of the positioning edge B5 is provided with several raised elastic contacts (not shown in the figure). These multiple elastic contacts can adaptively compensate for the microscopic unevenness and shape deviations of the circumferential surface of the motor housing and the inner wall of the protective housing 2. Even with minor dimensional fluctuations or geometric tolerances, stable and reliable fit can be ensured through the elastic deformation of some contacts, improving the assembly consistency and reliability of the product.
[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A bidirectional positioning wave pad for an internal combustion engine system motor, the bidirectional positioning wave pad being configured as a composite structural component with bidirectional limiting and elastic buffering functions, and used to fix the internal combustion engine exhaust valve motor (1), compensate for the tolerance of the protective housing (2), and isolate vibration and impact, the composite structural component including a pad body (3) and positioning edge A (4) and positioning edge B (5), characterized in that: The pad (3) is a circular thin metal plate substrate with a mounting positioning groove (301) in the middle; Positioning edge A (4) and positioning edge B (5) are integrally formed in the axial and radial directions of the pad body (3).
2. The bidirectional positioning wave pad for an internal combustion engine system motor according to claim 1, characterized in that: The positioning edge A (4) is adjacent to the mounting positioning groove (301). The positioning edge A (4) is folded outward along the axial direction to form an annular limiting flange. The annular limiting flange is engaged with the iron shell end of the internal combustion engine exhaust valve motor (1).
3. The bidirectional positioning wave pad for an internal combustion engine system motor according to claim 1, characterized in that: The positioning edge B (5) is arched, and its arched part is in contact with the circumferential surface of the iron shell of the internal combustion engine exhaust valve motor (1). The extensions at the upper and lower ends of the arched part extend outward and are in contact with the inner wall of the protective shell (2).
4. The bidirectional positioning wave pad for an internal combustion engine system motor according to claim 1, characterized in that: The mounting positioning groove (301) includes a central groove and notches distributed around the outer periphery of the central groove.
5. The bidirectional positioning wave pad for an internal combustion engine system motor according to claim 3, characterized in that: The inner side of the arched portion of the positioning edge B(5) is provided with several protruding elastic contact points.
6. The bidirectional positioning wave pad for an internal combustion engine system motor according to claim 1, characterized in that: The pad (3) and positioning edges A (4) and B (5) are made of spring steel.