An electromagnetic spring-loaded valve for a car refrigerator

Abstract

This utility model discloses an electromagnetic spring-opening valve for a vehicle refrigerator, comprising: a housing sub-assembly, a coil sub-assembly, and a push rod sub-assembly. The coil sub-assembly is fixedly installed inside the housing sub-assembly, and the push rod sub-assembly passes through the housing sub-assembly, with one end of the push rod sub-assembly extending into the coil sub-assembly and the other end extending outside the housing sub-assembly. When the coil sub-assembly is energized, it works with the push rod sub-assembly to achieve switching control. In terms of noise reduction, by setting dampers on multiple key mating surfaces, such as the semi-circular protrusion on the top surface of the T-shaped head of the insulating damper and the damping ring on the contact surface between the spring and the push rod, the impact force can be effectively buffered during the operation of the electromagnetic spring-opening valve, greatly reducing the operating noise and creating a quiet and comfortable environment for drivers and passengers.

Description

Technical Field

[0001] This utility model relates to the field of automotive equipment technology, and in particular to an electromagnetic spring-loaded valve for a car refrigerator. Background Technology

[0002] In the field of automotive equipment technology, in-vehicle refrigerators are important devices for enhancing the driving experience, and the performance of their accompanying electromagnetic spring-loaded valves is crucial. Currently, existing electromagnetic spring-loaded valves for in-vehicle refrigerators on the market have several problems:

[0003] On the one hand, the overall structural design is not compact enough, and the gaps between the components are large, resulting in a large space occupation and making it difficult to adapt to the installation needs of miniaturized and integrated vehicle-mounted equipment.

[0004] On the other hand, during operation, due to the lack of effective noise reduction measures, the electromagnetic spring-opening valve will generate a lot of noise, affecting the comfort of the driving environment.

[0005] In addition, the assembly process of some electromagnetic spring-loaded valves is complicated and requires high technical skills from installers, which increases production costs and installation time costs, making it difficult for large-scale production and widespread application.

[0006] Moreover, existing electromagnetic spring-loaded valves have defects in preventing magnetic short circuits. When the push rod head is subjected to back pressure, the moving iron core moves backward and is prone to contact with the rear cover with zero gap, causing a magnetic short circuit after energization. This leads to the loss of the electromagnetic spring-loaded valve's suction force and functional failure, reducing the reliability and stability of the equipment. Utility Model Content

[0007] In order to overcome the shortcomings of existing products, this utility model proposes an electromagnetic spring-loaded valve for vehicle refrigerators.

[0008] This utility model provides an electromagnetic spring-loaded valve for a vehicle refrigerator, comprising: a housing sub-assembly, a coil sub-assembly, and a push rod sub-assembly. The coil sub-assembly is fixedly disposed inside the housing sub-assembly, and the push rod sub-assembly passes through the housing sub-assembly, with one end of the push rod sub-assembly extending into the coil sub-assembly and the other end extending outside the housing sub-assembly. When the coil sub-assembly is energized, it cooperates with the push rod sub-assembly to realize switch control. The housing sub-assembly includes a rear cover, and a mounting groove is provided in the center of the rear cover on one side inside the housing sub-assembly. An insulating damper is engaged in the mounting groove. The insulating damper has a T-shaped cross-section, and the T-shaped head of the insulating damper covers and closely abuts the end face of the mounting groove.

[0009] The top rod sub-assembly includes a moving iron core, which is close to the end face of the T-shaped head of the insulating damper near the rear cover.

[0010] In some embodiments of this utility model, the top surface of the T-shaped head of the insulating damper is uniformly provided with a plurality of semi-circular protrusions.

[0011] In some embodiments of this utility model, the coil sub-assembly includes a coil assembly, a copper insert, and a connector. The coil assembly includes a coil frame and an enameled wire wound on the coil frame. The copper insert and the connector are both disposed on the coil frame and electrically connected to the enameled wire.

[0012] In some embodiments of this utility model, the connector is arranged along the axial direction of the housing assembly, and the enameled wire extends out of the outlet end face of the connector parallel to the axial direction of the housing assembly.

[0013] In some embodiments of this utility model, the connector is composed of a body and a cover that are snap-fitted together.

[0014] In some embodiments of this utility model, the outer shell assembly further includes a front cover and an outer shell. The outer shell is a cylindrical structure with a hollow interior and openings at both ends. The front cover and the rear cover are respectively snapped into the front and rear openings of the outer shell.

[0015] In some embodiments of this utility model, the front cover is provided with extended protruding connecting ears on opposite sides, and the edge of the outer shell is provided with a stepped relief groove corresponding to the position of the connecting ears. The front cover covers the edge of the outer shell, and the connecting ears are inserted into the relief groove. The outer shell is then assembled with the front cover by flanging and riveting. The connecting ears are provided with corresponding connecting screw holes.

[0016] In some embodiments of this utility model, the push rod sub-assembly further includes a buffer pad, a push rod, a stationary iron core, a spring, and a copper sleeve; the stationary iron core and the moving iron core are coaxially arranged inside the copper sleeve, and the copper sleeve is arranged in the coil sub-assembly; the head of the push rod is engaged with the buffer pad; a spring is sleeved in the middle of the push rod and passes through the central hole in the stationary iron core, and the tail of the push rod is held against the moving iron core under the action of the spring; the stationary iron core is inserted into the mating hole in the middle of the front end cover, and the bottom of the moving iron core is held against the inner side of the rear cover.

[0017] In some embodiments of this utility model, a damping ring is provided on the contact surface between the spring and the top rod.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The electromagnetic pop-up valve for vehicle refrigerators described in this utility model has a compact and reasonable overall structure with small gaps between various components, effectively solving the space occupation problem. It can better adapt to the limited installation space inside vehicle refrigerators and meet the development trend of miniaturization and integration of vehicle equipment.

[0020] In terms of noise reduction, by setting dampers on multiple key mating surfaces, such as the semi-circular protrusion on the top surface of the T-shaped head of the insulating damper and the damping ring on the contact surface between the spring and the push rod, the impact force can be effectively buffered during the operation of the electromagnetic spring-opening valve, greatly reducing the working noise and creating a quiet and comfortable environment for drivers and passengers.

[0021] In terms of installation and cost, the electromagnetic spring-loaded valve is easy to install, reduces the technical requirements for installers, shortens installation time, and thus reduces production costs, which is conducive to large-scale production and market promotion of the product.

[0022] In terms of performance reliability, the setting of the insulating damper effectively avoids the magnetic short circuit problem caused by the contact between the moving iron core and the rear cover, ensuring that the electromagnetic spring-opening valve can operate stably under various working conditions, improving the robustness and service life of the equipment; at the same time, the optimized design of the wire outlet direction of the plug prevents the risk of the enameled wire being broken during assembly and turnover, further enhancing the safety and reliability of the product. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall three-dimensional exploded structure of this utility model;

[0025] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the full cross-sectional planar structure of this utility model;

[0027] Figure 4 for Figure 3 A magnified structural diagram at point A;

[0028] Figure 5 This is a three-dimensional structural diagram of an insulating damper.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Buffer pad; 2. Top rod; 3. Front cover; 4. Stationary iron core; 5. Spring; 6. Damping ring; 7. Housing; 8. Copper sleeve; 9. Coil assembly; 10. Copper insert; 11. Connector; 111. Component body; 112. Component cover; 12. Moving iron core; 13. Insulating damper; 14. Rear cover; 141. Mounting slot. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. The accompanying drawings show preferred embodiments of the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0032] See Figure 1-5 As shown, the electromagnetic spring-loaded valve for this vehicle refrigerator includes: a shell sub-assembly, a coil sub-assembly, and a push rod sub-assembly. The coil sub-assembly is fixedly installed inside the shell sub-assembly, and the push rod sub-assembly passes through the shell sub-assembly. One end of the push rod sub-assembly extends into the coil sub-assembly, and the other end extends outside the shell sub-assembly. When the coil sub-assembly is energized, it cooperates with the push rod sub-assembly to realize switch control. The shell sub-assembly includes a rear cover 14. A mounting groove 141 is provided in the center of the rear cover on one side inside the shell sub-assembly. An insulating damper 13 is engaged in the mounting groove 141. The insulating damper 13 has a T-shaped cross-section, and the T-shaped head of the insulating damper 13 covers and closely abuts the end face of the mounting groove 141.

[0033] The top rod sub-assembly includes a moving iron core 12, which is close to the rear cover 14 and in close contact with the end face of the T-shaped head of the insulating damper 13.

[0034] The top surface of the 13T-shaped head of the insulating damper is uniformly provided with multiple semi-circular protrusions.

[0035] Specifically, such as Figure 2-5As shown, after the coil sub-assembly is energized, it works with the push rod sub-assembly to achieve switch control. However, in the natural state, if the head of the push rod 2 is subjected to back pressure, the moving iron core 12 will move backward and make zero-gap contact with the rear cover 14, which will cause a magnetic short circuit after energization, resulting in loss of attraction and functional failure. Therefore, this solenoid valve uses a T-shaped insulating damper installed in the mounting groove 141 of the rear cover 14. The T-shaped head 141 completely covers the contact surface between the rear cover 14 and the moving iron core 12, thereby ensuring its own damping function while also taking into account the insulation effect of the gasket, ensuring that the moving iron core 12 and the rear cover 14 will not contact each other, eliminating the possibility of magnetic short circuit, and thus further improving the robustness of this solenoid valve.

[0036] On the other hand, by uniformly setting multiple semi-circular protrusions on the contact surface between the T-shaped head 131 and the moving iron core 12, the impact force can be effectively buffered during the collision with the moving iron core 12, thereby effectively reducing the noise of this solenoid valve in operation.

[0037] The coil assembly includes a coil assembly 9, a copper insert 10, and a connector 11. The coil assembly 9 includes a coil frame and an enameled wire wound on the coil frame. The connector 11 is disposed on the housing assembly, and the copper insert 10 is disposed inside the connector 11. The copper insert 10 is inserted into the connector 11 and electrically connected to the enameled wire. The copper insert 10 and the connector 11 provide an interface function.

[0038] The connector 11 is arranged along the axial direction of the housing assembly, and the enameled wire extends out of the outlet end face of the connector 11 parallel to the axial direction of the housing assembly; the connector 11 is composed of a body 111 and a cover 112 connected by a snap fastener.

[0039] Specifically, such as Figure 2 As shown, by changing the direction of the connector 11 outgoing wire to make it parallel to the axial direction of the housing, the risk of it being easily broken during assembly or handling can be effectively prevented, thereby optimizing the structure of this solenoid valve, making it safer to use, and increasing its service life.

[0040] The outer casing assembly also includes a front cover 3 and an outer casing 7. The outer casing 7 is a cylindrical structure with a hollow interior and openings at both ends. The front cover 3 and the rear cover 14 are respectively snapped into the front and rear openings of the outer casing 7.

[0041] In this embodiment of the utility model, the front cover 3 is provided with extended protruding connecting ears on opposite sides, and the edge of the outer shell 7 is provided with a stepped relief groove corresponding to the position of the connecting ears. The front cover 3 covers the edge of the outer shell 7, and the connecting ears can be inserted into the relief groove for positioning. The outer shell 7 is then assembled with the front cover 3 by flanging and riveting. The connecting ears are provided with corresponding connecting screw holes for connecting and fixing with other equipment in the vehicle refrigerator.

[0042] The push rod sub-assembly includes a buffer pad 1, a push rod 2, a stationary iron core 4, a spring 5, a copper sleeve 8, and a moving iron core 12; the stationary iron core 4 and the moving iron core 12 are coaxially arranged inside the copper sleeve 8, which is located in the coil sub-assembly; the head of the push rod 2 is engaged with the buffer pad 1; the middle part of the push rod 2 is fitted with the spring 5 and passes through the central hole in the stationary iron core 4, and the tail of the push rod 2 is held against the moving iron core 12 by the action of the spring 5; the stationary iron core 4 is inserted into the mating hole in the middle of the front end cover 3, and the stationary iron core 4 is engaged with the hole shaft of the front end cover 3, with the stationary iron core 4 stepped for limiting the position, and the edge of the mating hole of the front end cover 3 is riveted to tighten the engagement between the hole and the shaft; the bottom of the moving iron core 12 is held against the inner side of the rear cover 14.

[0043] A damping ring 6 is provided on the contact surface between the spring 5 and the top rod 2; an insulating damper 13 is provided on the contact surface between the moving iron core 12 and the rear cover 14; both the damping ring 6 and the insulating damper 13 are used for noise reduction.

[0044] Meanwhile, to further improve the quietness of this solenoid valve, a fine hole is designed in the center of the moving iron core 12 to slowly discharge compressed air, thereby reducing the impact speed of the moving iron core through air resistance to achieve a noise reduction effect.

[0045] When the moving iron core is attracted, it moves quickly to the right, which can easily generate noise. When it moves quickly, the air pressure damping effect formed by the frustum-shaped groove at the front end of the moving iron core 12 and the stationary iron core 4 can be used to reduce noise.

[0046] The electromagnetic pop-up valve for vehicle refrigerators described in this utility model has a compact and reasonable overall structure with small gaps between various components, effectively solving the space occupation problem. It can better adapt to the limited installation space inside vehicle refrigerators and meet the development trend of miniaturization and integration of vehicle equipment.

[0047] In terms of noise reduction, by setting dampers on multiple key mating surfaces, such as the semi-circular protrusion on the top surface of the T-shaped head of the insulating damper and the damping ring on the contact surface between the spring and the push rod, the impact force can be effectively buffered during the operation of the electromagnetic spring-opening valve, greatly reducing the working noise and creating a quiet and comfortable environment for drivers and passengers.

[0048] In terms of installation and cost, the electromagnetic spring-loaded valve is easy to install, reduces the technical requirements for installers, shortens installation time, and thus reduces production costs, which is conducive to large-scale production and market promotion of the product.

[0049] In terms of performance reliability, the setting of the insulating damper effectively avoids the magnetic short circuit problem caused by the contact between the moving iron core and the rear cover, ensuring that the electromagnetic spring-opening valve can operate stably under various working conditions, improving the robustness and service life of the equipment; at the same time, the optimized design of the wire outlet direction of the plug prevents the risk of the enameled wire being broken during assembly and turnover, further enhancing the safety and reliability of the product.

[0050] Contents not described in detail in this specification are prior art known to those skilled in the art. The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Although the utility model 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 specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An electromagnetic poppet valve for a vehicle refrigerator, comprising: The assembly comprises a housing sub-assembly, a coil sub-assembly, and a top rod sub-assembly. The coil sub-assembly is fixedly disposed inside the housing sub-assembly. The top rod sub-assembly passes through the housing sub-assembly, with one end of the top rod sub-assembly extending into the coil sub-assembly and the other end extending outside the housing sub-assembly. When the coil sub-assembly is energized, it cooperates with the top rod sub-assembly to achieve switch control. The housing sub-assembly is characterized in that it includes a rear cover (14). The rear cover is provided with a mounting groove (141) in the center of one side inside the housing sub-assembly. An insulating damper (13) is snapped into the mounting groove (141). The insulating damper (13) has a T-shaped cross-section. The T-shaped head of the insulating damper (13) covers and closely adheres to the end face of the mounting groove (141). The top rod sub-assembly includes a moving iron core (12), which is close to the end face of the T-shaped head of the insulating damper (13) near the rear cover (14).

2. The solenoid poppet valve for a car refrigerator according to claim 1, characterized in that: The top surface of the T-shaped head of the insulating damper (13) is uniformly provided with multiple semi-circular protrusions.

3. The solenoid poppet valve for a car refrigerator according to claim 1, characterized in that: The coil assembly includes a coil assembly (9), a copper insert (10), and a connector (11). The coil assembly (9) includes a coil frame and an enameled wire wound on the coil frame. The copper insert (10) and the connector (11) are both disposed on the coil frame and electrically connected to the enameled wire.

4. The solenoid poppet valve for a car refrigerator according to claim 3, characterized in that: The connector (11) is arranged along the axial direction of the housing assembly, and the enameled wire extends out of the outlet end face of the connector (11) parallel to the axial direction of the housing assembly.

5. The solenoid poppet valve for a car refrigerator according to claim 4, characterized in that: The connector (11) is composed of a body (111) and a cover (112) that are snapped together.

6. The solenoid poppet valve for a car refrigerator according to claim 1, characterized in that: The outer shell sub-assembly also includes a front cover (3) and an outer shell (7). The outer shell (7) is a cylindrical structure with a hollow interior and openings at both ends. The front cover (3) and the rear cover (14) are respectively snapped into the front and rear openings of the outer shell (7).

7. The solenoid poppet valve for a car refrigerator according to claim 6, characterized in that: The front cover (3) has protruding connecting ears on opposite sides. The edge of the outer shell (7) is provided with a stepped clearance groove corresponding to the position of the connecting ears. The front cover (3) covers the edge of the outer shell (7) and the connecting ears are inserted into the clearance groove. The outer shell (7) is then assembled with the front cover (3) by flanging and riveting. The connecting ears are provided with corresponding connecting screw holes.

8. The solenoid poppet valve for a car refrigerator according to claim 6, characterized in that: The top rod sub-assembly also includes a buffer pad (1), a top rod (2), a stationary iron core (4), a spring (5), and a copper sleeve (8); the stationary iron core (4) and the moving iron core (12) are coaxially arranged in the copper sleeve (8), and the copper sleeve (8) is arranged in the coil sub-assembly; the head of the top rod (2) is engaged with the buffer pad (1); the middle part of the top rod (2) is fitted with a spring (5) and passes through the center hole in the stationary iron core (4), and the tail of the top rod (2) is held against the moving iron core (12) under the action of the spring (5); the stationary iron core (4) is inserted into the mating hole in the middle of the front end cover (3), and the bottom of the moving iron core (12) is held against the inside of the rear cover (14).

9. The electromagnetic spring-opening valve for a vehicle-mounted refrigerator according to claim 8, characterized in that: A damping ring (6) is provided on the contact surface between the spring (5) and the push rod (2).

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