An electromagnetic valve for an AMT transmission actuation arrangement

Abstract

The utility model relates to solenoid valve field, concretely relates to a solenoid valve for AMT transmission execution structure, including lower casing, horizontal valve group, plug-in valve group and flexible circuit board, horizontal valve group and plug-in valve group are installed in lower casing, wherein horizontal valve group includes a plurality of first solenoid valve, plug-in valve group includes a plurality of second solenoid valve, the flexible circuit board is welded with first solenoid valve, second solenoid valve, the device is arranged by horizontal installation of horizontal valve group and vertical installation of plug-in valve group, let horizontal valve group be close to gear cylinder setting, through the integration of multiple first solenoid valve, thereby reduce horizontal space occupation, plug-in valve group is close to gear cylinder setting, through directly inserting second solenoid valve in corresponding position, shorten the air path, can promote response efficiency, solved the problem that traditional integrated horizontal valve group horizontal space is too big or distributed vertical plug-in assembly complex, especially adapt to the compact structure demand of heavy commercial vehicle transmission.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valves, specifically to a solenoid valve used in the actuator structure of an AMT transmission. Background Technology

[0002] AMT (Automated Manual Transmission) transmissions, as the mainstream automatic transmission type in the current heavy-duty commercial vehicle field, occupy an increasingly important share. Under the premise of pursuing efficient transportation in heavy-duty commercial vehicles, AMT transmissions combine the characteristics of manual and automatic transmissions, making them the first choice for commercial vehicle manufacturers and transportation companies.

[0003] In the AMT transmission system, the shift actuator is its core component and plays a crucial role. The shift actuator is mainly responsible for controlling the shifting action of the transmission to ensure that the vehicle can switch gears under different driving conditions. The arrangement of the solenoid valves inside the shift actuator is one of the key factors affecting its performance and structure. Currently, there are two common solenoid valve arrangement methods: integrated transverse valve group design and distributed cartridge design.

[0004] The integrated transverse valve manifold design is a solution that integrates multiple solenoid valves into a transversely arranged valve manifold. The advantage of this design is that it not only has a high degree of integration, but also reduces the number of parts and connection points, making the structure of the entire actuator more compact. However, its disadvantage is that, due to its transverse arrangement, it occupies a large amount of transverse space, which can affect the installation and layout of other parts in the space-constrained transmissions of heavy commercial vehicles.

[0005] The distributed vertical insertion design involves grouping the solenoid valves and vertically inserting them into their respective positions, typically above the controlled cylinder. The advantage of this design is that by grouping and vertically inserting the solenoid valves, the positions and layouts of the controlled cylinders can be flexibly arranged, making the air circuit connection more direct and simple. However, its disadvantages are twofold: firstly, the assembly is relatively difficult, requiring individual positioning and fixing, increasing the complexity and workload of assembly; secondly, the design of the housing's air circuit is complex, requiring planning of the air circuit's direction and connection method to ensure unobstructed airflow between each solenoid valve and the controlled cylinder, avoiding problems such as air leakage and air blockage. Utility Model Content

[0006] The purpose of this invention is to propose a solenoid valve for the actuator structure of an AMT transmission. By using a hybrid arrangement of internal solenoid valve groups, the limitations of traditional arrangement methods are solved, the product integration is improved, the lateral space occupied by the overall actuator is reduced, and significant optimizations are made in assembly, reliability, and housing machining.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model proposes a solenoid valve for the actuator structure of an AMT transmission, including a lower housing, a transverse valve assembly, a cartridge valve assembly, and a flexible circuit board.

[0009] The horizontal valve assembly and the cartridge valve assembly are installed in the lower housing. The horizontal valve assembly includes several first solenoid valves, and the cartridge valve assembly includes several second solenoid valves. The flexible circuit board is welded to the first solenoid valves and the second solenoid valves.

[0010] As a further improvement, the flexible circuit board is a single piece, wherein the size of the flexible circuit board is adapted to the size of the lower housing.

[0011] As a further improvement, the flexible circuit board includes a first connecting ear, a second connecting ear, and a third connecting ear.

[0012] As a further improvement, the first and second connecting ears are connected to pins on the first solenoid valve, and the third connecting ear is connected to pins on the second solenoid valve.

[0013] As a further improvement, the transverse valve assembly also includes a first valve seat, a first valve pin, a first bolt, and a first pressure plate;

[0014] The first solenoid valve is inserted into the first valve seat and pressed by the first valve pin and the first pressure plate, and fixed by the first bolt.

[0015] As a further improvement, the transverse valve assembly also includes a second valve seat, a second valve pin, a second bolt, and a second pressure plate;

[0016] The second solenoid valve is inserted into the second valve seat and pressed together by the second valve pin and the second pressure plate, and fixed by the second bolt.

[0017] As a further improvement, the transverse valve assembly is positioned near the end of the shift cylinder.

[0018] As a further improvement, the horizontally positioned valve assembly is located in the lower housing along the horizontal direction.

[0019] As a further improvement, the cartridge valve assembly is positioned near the end of the gear selection cylinder.

[0020] As a further improvement, the cartridge valve assembly is disposed vertically in the lower housing.

[0021] Compared with the prior art, this utility model achieves the following technical effects:

[0022] This device combines the horizontal installation of the transverse valve assembly with the vertical installation of the cartridge valve assembly. The transverse valve assembly is positioned close to the shift cylinder, and multiple first solenoid valves are integrated to reduce the lateral space occupied. The cartridge valve assembly is positioned close to the gear selector cylinder, and the second solenoid valve is directly inserted into the corresponding position, shortening the air path and improving response efficiency. This solves the problems of excessive lateral space in traditional integrated transverse valve assemblies or complex distributed vertical assembly, and is especially suitable for the compact structure requirements of heavy-duty commercial vehicle transmissions.

[0023] This device uses a single flexible circuit board to cover the entire lower housing, and its size matches the lower housing. The solenoid valve pins of the horizontal valve group and the cartridge valve group are welded through the first to third connecting ears. Compared with the traditional multi-wire harness connection, it eliminates the assembly complexity and contact failure risk caused by wire harness crossing, reduces the number of welding points and interfaces, and further improves the reliability of the gas path and the stability of the circuit. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0025] Figure 2 This is a schematic diagram of the horizontal valve assembly structure in this embodiment;

[0026] Figure 3 This is a schematic diagram of the cartridge valve assembly structure in this embodiment.

[0027] Reference numerals: 1. Lower housing; 2. Horizontal valve assembly; 2a. First valve seat; 2b. First solenoid valve; 2c. First valve pin; 2d. First bolt; 2e. First pressure plate; 3. Cartridge valve assembly; 3a. Second valve seat; 3b. Second solenoid valve; 3c. Second valve pin; 3d. Second bolt; 3e. Second pressure plate; 4. Flexible circuit board; 4a. First connecting ear; 4b. Second connecting ear; 4c. Third connecting ear. Detailed Implementation

[0028] The embodiments of this application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. Rather, the embodiments of this application include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0029] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0030] See Figure 1 This utility model proposes a solenoid valve for the actuator structure of an AMT transmission, including a lower housing 1, a transverse valve group 2, a cartridge valve group 3, and a flexible circuit board 4.

[0031] The horizontal valve assembly 2 and the cartridge valve assembly 3 are installed in the lower housing 1. The horizontal valve assembly 2 includes several first solenoid valves 2b, and the cartridge valve assembly 3 includes several second solenoid valves 3b. The flexible circuit board 4 is welded to the first solenoid valves 2b and the second solenoid valves 3b.

[0032] See Figure 1 and Figure 2 In this embodiment, the horizontal valve assembly 2 includes a first solenoid valve 2b, a first valve seat 2a, a first valve pin 2c, a first bolt 2d, and a first pressure plate 2e. The first solenoid valve 2b is used to realize the electromagnetic control function of the horizontal valve assembly 2. The first valve seat 2a provides an installation base and has reserved holes to facilitate the assembly of other components. The first bolt 2d plays a positioning role to ensure the accurate relative position between the components. The first pressure plate 2e is used to press the top of the first solenoid valve 2b to prevent it from loosening during operation. The first bolt 2d is used to fix the first pressure plate 2e to the first valve seat 2a to ensure the structural stability of the horizontal valve assembly 2.

[0033] During assembly, the first solenoid valve 2b is inserted into the reserved hole of the first valve seat 2a, and the first valve pin 2c passes through the first solenoid valve 2b and the first valve seat 2a to achieve positioning. The first pressure plate 2e is used to press the top of the first solenoid valve 2b. The first pressure plate 2e is fixed to the first valve seat 2a by the first bolt 2d to achieve the assembly of the horizontal valve group 2.

[0034] In this embodiment, the horizontally positioned valve assembly 2 is arranged horizontally in the lower housing 1 and is located near the end of the shift cylinder. The advantage of this arrangement is that, compared with the traditional integrated horizontal design, this embodiment effectively saves width space and avoids the problem of excessive horizontal width. It also solves the problem of excessively wide outer dimensions of the actuator caused by excessive horizontal width, making the structure of the entire actuator more compact, easier to install and maintain, and helps to improve the system integration and reduce unnecessary space waste.

[0035] See Figure 3 In this embodiment, the cartridge valve assembly 3 includes a second solenoid valve 3b, a second valve seat 3a, a second valve pin 3c, a second bolt 3d, and a second pressure plate 3e. During assembly, the second solenoid valve 3b is vertically inserted into the slot of the second valve seat 3a, and the second valve pin 3c is used to penetrate the second solenoid valve 3b for positioning. The second pressure plate 3e is used to press the top of the second solenoid valve 3b, and the second valve seat 3a is fixed to the lower housing 1 by the second bolt 3d.

[0036] In this embodiment, the cartridge valve assembly 3 is arranged vertically in the lower housing 1 and is located near the end of the gear selector cylinder. The advantage of this arrangement is that it can make full use of the vertical height space and effectively reduce the impact of the lateral width on the overall layout, so that the various components can be arranged more reasonably in the limited space. In this embodiment, through the coordinated arrangement of the horizontal valve assembly 2 and the cartridge valve assembly 3, the overall volume of the solenoid valve is further reduced, which is especially suitable for the narrow installation space of the transmission in heavy commercial vehicles, thereby improving the integrity and reliability of the transmission.

[0037] See Figure 1 In this embodiment, the flexible circuit board 4 is a single piece, and its size is completely matched with the upper surface contour of the lower housing 1. The flexible circuit board 4 is provided with three soldering areas, namely the first connecting ear 4a, the second connecting ear 4b, and the third connecting ear 4c. In this embodiment, the first connecting ear 4a, the second connecting ear 4b, and the third connecting ear 4c are preferably made of copper foil, which can realize circuit connection.

[0038] During installation, the solder joints on the first connecting ear 4a and the second connecting ear 4b are soldered to the pins of the first solenoid valve 2b, the solder joints on the third connecting ear 4c are soldered to the pins of the second solenoid valve 3b, and the flexible circuit board 4 is attached to the upper surface of the lower housing 1 and connected to the lower housing 1 by snap-fit.

[0039] See Figure 3 In this embodiment, the lower housing 1 is preferably made of aluminum alloy, and the lower housing 1 has a pre-set air passage. One air passage is directly connected to the horizontal valve group 2 and the shift cylinder, and the other air passage is directly connected to the cartridge valve group 3 and the gear selection cylinder. The bottom surface of the lower housing 1 has several bolt holes for fixing the horizontal valve group 2 and the cartridge valve group 3.

[0040] This device combines the horizontal installation of the transverse valve assembly with the vertical installation of the cartridge valve assembly. The transverse valve assembly is positioned close to the shift cylinder, and multiple first solenoid valves are integrated to reduce the lateral space occupied. The cartridge valve assembly is positioned close to the gear selector cylinder, and the second solenoid valve is directly inserted into the corresponding position, shortening the air path and improving response efficiency. This solves the problems of excessive lateral space in traditional integrated transverse valve assemblies or complex distributed vertical assembly, and is especially suitable for the compact structure requirements of heavy-duty commercial vehicle transmissions.

[0041] This device uses a single flexible circuit board to cover the entire lower housing, and its size matches the lower housing. The solenoid valve pins of the horizontal valve group and the cartridge valve group are welded through the first to third connecting ears. Compared with the traditional multi-wire harness connection, it eliminates the assembly complexity and contact failure risk caused by wire harness crossing, reduces the number of welding points and interfaces, and further improves the reliability of the gas path and the stability of the circuit.

[0042] It should be noted that in the description of this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this application pertain.

[0044] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0045] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A solenoid valve for use in the actuator of an AMT transmission, characterized in that, Includes a lower housing, a horizontally positioned valve assembly, a cartridge valve assembly, and a flexible circuit board; The horizontal valve assembly and the cartridge valve assembly are installed in the lower housing. The horizontal valve assembly includes several first solenoid valves, and the cartridge valve assembly includes several second solenoid valves. The flexible circuit board is welded to the first solenoid valves and the second solenoid valves.

2. The solenoid valve for an AMT transmission actuator according to claim 1, characterized in that, The flexible circuit board is a single piece, and its size is adapted to the size of the lower housing.

3. The solenoid valve for an AMT transmission actuator according to claim 2, characterized in that, The flexible circuit board includes a first connecting ear, a second connecting ear, and a third connecting ear.

4. The solenoid valve for an AMT transmission actuator according to claim 3, characterized in that, The first and second connecting ears are connected to pins on the first solenoid valve, and the third connecting ear is connected to pins on the second solenoid valve.

5. The solenoid valve for an AMT transmission actuator according to claim 1, characterized in that, The transverse valve assembly also includes a first valve seat, a first valve pin, a first bolt, and a first pressure plate; The first solenoid valve is inserted into the first valve seat and pressed by the first valve pin and the first pressure plate, and fixed by the first bolt.

6. The solenoid valve for an AMT transmission actuator according to claim 1, characterized in that, The transverse valve assembly also includes a second valve seat, a second valve pin, a second bolt, and a second pressure plate; The second solenoid valve is inserted into the second valve seat and pressed together by the second valve pin and the second pressure plate, and fixed by the second bolt.

7. The solenoid valve for an AMT transmission actuator according to claim 1, characterized in that, The horizontal valve assembly is located near one end of the shift cylinder.

8. The solenoid valve for an AMT transmission actuator according to claim 7, characterized in that, The horizontally positioned valve assembly is located in the lower housing along the horizontal direction.

9. The solenoid valve for an AMT transmission actuator according to claim 1, characterized in that, The cartridge valve assembly is located near the gear selection cylinder.

10. The solenoid valve for an AMT transmission actuator according to claim 9, characterized in that, The cartridge valve assembly is disposed vertically in the lower housing.

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