Switch valve with extended heat dissipation function and seat pneumatic controller

Abstract

The utility model provides a switch valve with an expansion heat dissipation function and a seat pneumatic controller, the switch valve comprises a valve body, the valve body is provided with a first area and a second area, the first area is provided with a first valve port, the second area is provided with a second valve port, a first channel is communicated between the first area and the second area, and the first channel is provided with a mounting cavity arranged in the first area; the first area is provided with a first switch assembly and comprises a valve element arranged in the mounting cavity, and heat dissipation structures are distributed in the first area and the second area; when the first switch assembly is in a first state, the valve element is arranged at the end, close to the first valve port, in the mounting cavity, and the first channel is cut off. In the second state, the valve element is arranged at the end, close to the second valve port, in the mounting cavity, and airflow flows to the first valve port from the second valve port through the mounting cavity; by arranging the first channel and arranging the valve element in the mounting cavity of the first channel, gas can flow through the valve element to take away heat, meanwhile, the heat of the valve element is conducted to the first area through the heat dissipation structure, the heat dissipation area is increased, and unsmooth operation of the valve element due to overheating expansion is avoided.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a switching valve and a seat pneumatic controller with extended heat dissipation function. Background Technology

[0002] The on / off valve is a crucial component in pneumatic controllers, controlling the flow of gas to achieve overall pneumatic control. An on / off valve consists of a valve body, valve core, spring, and coil. When the valve core receives an external signal, it displaces relative to the valve body, opening the internal air passage. In existing on / off valve structures, the gas flow does not pass through the valve core. Therefore, the gas cannot carry away heat from the valve core during flow; instead, the heat is conducted to the outside through the valve body structure. However, due to the small contact area with air, heat dissipation is limited. After prolonged operation, the valve core expands due to heat, leading to impaired movement. Utility Model Content

[0003] The purpose of this application is to address the above problems by providing a switching valve and a seat pneumatic controller with extended heat dissipation function.

[0004] In a first aspect, this application provides a switching valve with extended heat dissipation function, disposed within a pneumatic controller for an automotive seat, with one end located on the controller housing and the other end extending through the controller to the outside along a first direction, comprising:

[0005] The valve body has a first region and a second region. The first region has a first valve port that communicates with a gas source. The second region has a second valve port that communicates with the inside of the controller. A first channel extending along the first direction is connected between the first valve port and the second valve port. The first channel has a mounting cavity located in the first region.

[0006] A first switching assembly, the first switching assembly including a valve core disposed within the mounting cavity;

[0007] A heat dissipation structure is distributed in the first region and the second region, and is used to dissipate heat for the first switching assembly;

[0008] The first switch assembly has a first state and a second state. When it is in the first state, the valve core is placed in the mounting cavity near the first valve port, and the first channel is blocked. When it is in the second state, the valve core is placed in the mounting cavity near the second valve port, and the airflow flows from the first valve port through the mounting cavity to the second valve port.

[0009] According to the technical solutions provided in certain embodiments of this application, the valve body includes a first frame, a stationary iron, and a second frame connected in sequence. The first frame is located in the first region and has the mounting cavity inside. The second frame is located in the second region and has a communicating cavity inside. The two ends of the stationary iron are respectively placed inside the first frame and the second frame. The ends of the first frame and the second frame that are far apart from each other have the first valve port and the second valve port, respectively.

[0010] According to the technical solutions provided in certain embodiments of this application, the first switch assembly further includes a coil and an elastic element. The coil is sleeved on the first frame, and the elastic element is disposed at one end of the stationary iron near the first valve port. The valve core is disposed on the side of the elastic element near the first valve port. The valve core can move along the first direction under the action of the magnetic field of the elastic element and the coil to abut against the stationary iron or the inner wall of the first frame.

[0011] According to the technical solutions provided in certain embodiments of this application, the heat dissipation structure includes a first heat sink and a second heat sink. The first heat sink is disposed in the first region, and its two ends are respectively snapped onto the first frame and the stationary iron, so that the first frame and the stationary iron are relatively fixed. The second heat sink is disposed in the second region, and its two ends are respectively snapped onto the second frame and the stationary iron, so that the second frame and the stationary iron are relatively fixed.

[0012] According to the technical solutions provided in certain embodiments of this application, the heat dissipation structure includes a third heat sink, one end of which is disposed in the first region and snapped with the first frame, and the other end of which extends into the second region and snaps with the second frame, so that the first frame, the stationary iron and the second frame are relatively fixed.

[0013] According to the technical solutions provided in some embodiments of this application, the heat dissipation structure is provided with a plurality of heat dissipation holes.

[0014] According to the technical solutions provided in certain embodiments of this application, a flow stabilizing and noise reduction device is provided in the communicating cavity to stabilize the airflow in the first channel and reduce the noise of the airflow.

[0015] According to the technical solutions provided in certain embodiments of this application, a detection hole is provided on the side wall of the second skeleton at the position corresponding to the communicating cavity, and the detection hole can connect the communicating cavity with the external environment.

[0016] According to the technical solutions provided in certain embodiments of this application, a magnetic conductive sheet is further provided between the third heat sink and the stationary iron.

[0017] Secondly, this application provides a seat pneumatic controller, including a switching valve with extended heat dissipation function as described above.

[0018] Compared with the prior art, the beneficial effects of this application are as follows: This application provides a switching valve with extended heat dissipation function, which is disposed in the pneumatic controller of an automotive seat. One end is located on the controller housing, and the other end extends through the controller to the outside along a first direction. The switching valve includes a valve body, having a first region and a second region. The first region has a first valve port communicating with the inside of the controller, and the second region has a second valve port communicating with an air source. A first channel extending along the first direction is connected between the first valve port and the second valve port. The first channel has an installation cavity disposed in the first region. It also includes a first switching assembly and a heat dissipation mechanism. The first switching assembly includes a valve core disposed in the installation cavity. The heat dissipation structure is distributed in the first region and the second region for heat dissipation of the first switching assembly. The first switching assembly has a first state and a second state. When it is in the first state, the valve core is placed in the installation cavity near the first valve port, and the first channel is blocked. When it is in the second state, the valve core is placed in the installation cavity near the second valve port, and the airflow flows from the second valve port through the installation cavity to the first valve port.

[0019] By setting a first channel in the valve body and placing a valve core in the mounting cavity of the first channel, when the valve is opened, gas can flow through the valve core and carry away the heat on the valve core. At the same time, the heat dissipation structure distributed in the first and second zones conducts the heat of the valve core to the first zone, increasing the heat dissipation area of ​​the valve and facilitating the heat dissipation of the valve core. This avoids the valve core from overheating and expanding, which could cause malfunctions. Furthermore, the valve core blocks the first channel along the direction of gas flow, which can prevent high-pressure gas from forcing open the valve body, giving the valve a strong resistance to airflow fluctuations.

[0020] It should be understood that the descriptions of technical features, technical solutions, beneficial effects, or similar language in this application do not imply that all features and advantages can be achieved in any single embodiment. Rather, it is understood that the description of a feature or beneficial effect means that a specific technical feature, technical solution, or beneficial effect is included in at least one embodiment. Therefore, the descriptions of technical features, technical solutions, or beneficial effects in this specification do not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions, and beneficial effects described in this embodiment can be combined in any suitable manner. Those skilled in the art will understand that embodiments can be implemented without one or more specific technical features, technical solutions, or beneficial effects of a particular embodiment. In other embodiments, additional technical features and beneficial effects may be identified in specific embodiments that do not embody all embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the split structure of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application, when a first heat sink and a second heat sink are provided;

[0023] Figure 2 A schematic diagram of the overall structure of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application, when a first heat sink and a second heat sink are provided;

[0024] Figure 3 A cross-sectional schematic diagram of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application, with a first heat sink and a second heat sink;

[0025] Figure 4 A cross-sectional schematic diagram of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application, wherein a first heat sink and a second heat sink are provided and the valve is closed;

[0026] Figure 5 A cross-sectional schematic diagram of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application, wherein a first heat sink and a second heat sink are provided and the valve is in operation;

[0027] Figure 6 This is a schematic diagram of the split structure of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application when a third heat sink is provided;

[0028] Figure 7 This is a schematic diagram of the structure of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application when a third heat sink is provided;

[0029] Figure 8 This is a top view of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application when a third heat sink is installed;

[0030] Figure 9 This is a cross-sectional schematic diagram of a switching valve with extended heat dissipation function provided in Embodiment 1 of this application when a third heat sink is installed;

[0031] Figure 10 This is a schematic diagram of the structure of a seat pneumatic controller provided in Embodiment 2 of this application;

[0032] Figure 11This is a schematic diagram of the air path structure of a pneumatic system provided in Embodiment 2 of this application.

[0033] The text labels in the image represent:

[0034] 1. Valve body; 2. First switching assembly; 3. First heat sink; 4. Second heat sink; 5. Third heat sink; 6. Current stabilizing and noise reduction component; 7. Magnetic sheet; 8. Switch valve; 9. Air source; 11. First frame; 12. Second frame; 13. Static iron; 14. First channel; 21. Valve core; 22. Coil; 23. Elastic element; 51. Heat dissipation hole; 101. First zone; 102. Second zone; 111. Mounting cavity; 112. First valve port; 113. Air outlet; 121. Connecting cavity; 122. Second valve port; 123. Air inlet; 124. Detection hole; 211. Cap. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The descriptions in this section are merely illustrative and explanatory, and should not be construed as limiting the scope of protection of this application. Specifically, the described embodiments are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort should fall within the scope of protection of this invention.

[0036] It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0037] Example 1

[0038] As mentioned in the background section, to address the problems in the prior art, this embodiment provides a switching valve with extended heat dissipation function, disposed within a pneumatic controller for an automotive seat, with one end located on the controller housing and the other end extending through the controller to the outside along a first direction, comprising:

[0039] Valve body 1, the valve body 1 has a first region 101 and a second region 102, the first region 101 has a first valve port 112 communicating with the inside of the controller, the second region 102 has a second valve port 122 communicating with the air source 9, and a first channel 14 extending in a first direction is connected between the first valve port 112 and the second valve port 122, and the first channel 14 has a mounting cavity 111 provided in the first region 101;

[0040] The first switch assembly 2 includes a valve core 21, which is disposed in the mounting cavity 111.

[0041] A heat dissipation structure is distributed in the first zone 101 and the second zone 102, and is used to dissipate heat for the first switch assembly 2.

[0042] The first switch assembly 2 has a first state and a second state. When it is in the first state, the valve core 21 is placed in the mounting cavity 111 at one end near the first valve port 112, and the first channel 14 is blocked. When it is in the second state, the valve core 21 is placed in the mounting cavity 111 at one end near the second valve port 122, and the airflow flows from the second valve port 122 through the mounting cavity 111 to the first valve port 112.

[0043] like Figure 1 , Figure 2 and Figure 6 As shown, the first direction is the length direction of the valve body 11, which has a first channel 14 inside. A first valve port 112 and a second valve port 122 are respectively opened at both ends. The first region 101 is the part of the valve body 1 near the first valve port 112, and the second region 102 is the region of the valve body 1 near the second valve port 122. The mounting cavity 111 is located on the first channel 14 and within the first region 101. External gas can enter the first channel 14 through the second valve port 122 and flow through the mounting cavity 111 to the first valve port. 112; The valve core 21 is approximately cylindrical in structure, with rubber caps 211 at both ends, located in the mounting cavity 111, and can move in the first direction within the mounting cavity 111. When the valve core 21 moves to the end of the mounting cavity 111 near the first valve port 112, the first channel 14 is blocked, and the first switch assembly 2 is in the first state. When the valve core 21 moves to the end of the mounting cavity 111 near the second valve port 122, the first channel 14 is connected, and the first switch assembly 2 is in the second state.

[0044] By setting a first channel 14 inside the valve body 1 and setting a valve core 21 inside the mounting cavity 111 of the first channel 14, when the switching valve 8 is opened, gas can flow through the valve core 21 and carry away the heat on the valve core 21. At the same time, the heat dissipation structure distributed in the first zone 101 and the second zone 102 conducts the heat of the valve core 21 to the first zone 101, increasing the heat dissipation area of ​​the switching valve 8, which is beneficial to the heat dissipation of the valve core 21 and avoids the valve core 21 from overheating and expanding, which would cause poor operation. In addition, the valve core 21 blocks the first channel 14 along the direction of gas flow, which can prevent the phenomenon of high pressure gas breaking open the valve body 1, so that the switching valve 8 has a strong resistance to airflow fluctuations.

[0045] In a preferred embodiment, the valve body 1 includes a first frame 11, a stationary iron 13, and a second frame 12 connected in sequence. The first frame 11 is located in a first region 101 and has a mounting cavity 111 inside. The second frame 12 is located in a second region 102 and has a communicating cavity 121 inside. The two ends of the stationary iron 13 are respectively placed inside the first frame 11 and the second frame 12. The ends of the first frame 11 and the second frame 12 that are far apart from each other have a first valve port 112 and a second valve port 122, respectively.

[0046] like Figure 3 and Figure 9 As shown, the first frame 11, the stationary iron 13, and the second frame 12 are all hollow structures and extend along the first direction. The first frame 11 has an air outlet 113 on the side near the first valve port 112, and an installation cavity 111 is formed between the end of the air outlet 113 and the end of the stationary iron 13 that are close to each other. The second frame 12 has an air inlet 123 on the side near the second valve port 122, and a connecting cavity 121 is formed between the end of the air inlet 123 and the end of the stationary iron 13 that are close to each other. The installation cavity 111 and the connecting cavity 121 are connected through the hollow structure inside the stationary iron 13. By adding a frame to the original single frame structure of the valve body 1, the switching valve 8 has a larger gas flow space, which is beneficial for the heat dissipation of the valve core 21. At the same time, a noise reduction or flow stabilization device can also be installed in the added frame to reduce intake noise and stabilize airflow.

[0047] In a preferred embodiment, the first switch assembly 2 further includes a coil 22 and an elastic element 23. The coil 22 is sleeved on the first frame 11, and the elastic element 23 is disposed at one end of the stationary iron 13 near the first valve port 112. A valve core 21 is provided on the side of the elastic element 23 near the first valve port 112. The valve core 21 can move along a first direction under the action of the elastic force of the elastic element 23 and the magnetic field generated after the coil 22 is energized, so as to abut against the stationary iron 13 or the inner wall of the first frame 11.

[0048] like Figure 4 and Figure 5As shown, coil 22 is sleeved on the outer periphery of first frame 11. Coil 22 can generate a magnetic field by being energized to control the movement of valve core 21 within mounting cavity 111. Elastic element 23 is a spring, one end of which is fixed to the inner wall of the end of stationary iron 13 located within the first frame 11 and extends into mounting cavity 111 along the first direction. The circumferential opening of the stationary iron 13 near the end of the first frame 11 has a toothed notch so that when valve core 21 abuts against the stationary iron 13, airflow can enter mounting cavity 111 from inside the stationary iron 13. When coil 22 is energized, valve core 21 compresses elastic element 23 under the action of magnetic field generated by coil 22 and moves against the end of stationary iron 13 located within the first frame 11 in the opposite direction of gas flow. When coil 22 is de-energized, valve core 21 moves along the gas flow direction under the elastic force of spring and gas push to abut against the inner wall of second frame 12 to block the first channel 14.

[0049] In a preferred embodiment, the heat dissipation structure includes a first heat sink 3 and a second heat sink 4. The first heat sink 3 is disposed in the first region 101, and its two ends are respectively snapped onto the first frame 11 and the stationary iron 13 so that the first frame 11 and the stationary iron 13 are relatively fixed. The second heat sink 4 is disposed in the second region 102, and its two ends are respectively snapped onto the second frame 12 and the stationary iron 13 so that the second frame 12 and the stationary iron 13 are relatively fixed.

[0050] like Figure 1 As shown, the heat sink is made of yoke iron. The first heat sink 3 and the second heat sink 4 are both approximately U-shaped plate structures, which can fix the first frame 11 and the stationary iron 13, as well as the second frame 12 and the stationary iron 13, to each other. The first heat sink 3 is located outside the coil 22, and its end that is close to the second heat sink 4 abuts against the outer wall of the stationary iron 13, which increases the heat dissipation area of ​​the switching valve 8. All three are made of metal materials, which is conducive to heat conduction. At the same time, the first heat sink 3 can form a closed magnetic circuit with the stationary iron 13 and the valve core 21, which encloses the magnetic lines of force generated by the coil 22 inside and enhances the magnetic field.

[0051] In a preferred embodiment, the heat dissipation structure includes a third heat sink 5. One end of the third heat sink 5 is disposed in the first region 101 and is snapped into the first frame 11, and the other end extends into the second region 102 and is snapped into the second frame 12, so that the first frame 11, the stationary iron 13 and the second frame 12 are relatively fixed.

[0052] like Figure 6 As shown, the third heat sink 5 is also similar to a U-shaped plate structure, further increasing the heat dissipation area. The two ends of the third heat sink 5 are respectively attached to the first frame 11 and the second frame 12. Using the one-piece molded third heat sink 5 can make the heat conduction better.

[0053] In a preferred embodiment, the heat dissipation structure has a plurality of heat dissipation holes 51.

[0054] like Figure 7 and Figure 8 As shown, multiple heat dissipation holes 51 are evenly distributed on the third heat sink 5. The heat dissipation holes 51 correspond to the position of the coil 22, which can directly dissipate the heat generated by the coil 22 into the air to achieve rapid heat dissipation. Furthermore, heat dissipation holes 51 can also be opened on the first heat sink 3 and the second heat sink 4 to assist the valve body in rapid heat dissipation.

[0055] In a preferred embodiment, a flow stabilizing and noise reduction component 6 is provided in the connecting cavity 121 to stabilize the airflow in the first channel 14 and reduce the noise of the airflow.

[0056] like Figure 5 As shown, the flow stabilizing and noise reduction component 6 is made of composite material made of sintered metal particles or absorbent sponge, and is located in the connecting cavity 121 of the second skeleton 12. While being breathable, it can stabilize the airflow, reduce airflow fluctuations, and reduce the noise generated when the gas flows in the first channel 14.

[0057] In a preferred embodiment, a detection hole 124 is provided on the side wall of the second frame 12 at a position corresponding to the communicating cavity 121, and the detection hole 124 can connect the communicating cavity 121 with the external environment.

[0058] like Figure 3 and Figure 9 As shown, the detection hole 124 is approximately trumpet-shaped and is located on the side wall of the second frame 12, corresponding to the position of the connecting cavity 121. A gas pressure detection device can be connected to the detection hole 124 to detect the gas pressure in the switch valve 8.

[0059] In a preferred embodiment, a magnetic sheet 7 is further provided between the third heat sink 5 and the stationary iron 13.

[0060] like Figure 6 As shown, the magnetic conductive sheet 7 is located between the middle of the third heat sink 5 and the stationary iron 13. The part of the third heat sink 5 located in the first zone 101 can form a closed magnetic circuit with the magnetic conductive sheet 7, the stationary iron 13 and the valve core 21, which encloses the magnetic lines of force generated by the coil 22 inside and enhances the magnetic field.

[0061] Working principle: Initially, the valve core 21 abuts against the inner wall of the first frame 11 under the action of airflow pressure, and the switch valve 8 is closed at this time. When the coil 22 is energized, the valve core 21 moves in the opposite direction of the airflow under the action of the magnetic field generated by the coil 22 until it abuts against the stationary iron 13. The interior of the stationary iron 13 is connected to the mounting cavity 111. The airflow can enter the valve body 1 through the second valve port 122, and then pass through the air inlet 123, the connecting cavity 121, the interior of the stationary iron 13, the connecting cavity 121, and the air outlet 113 before being discharged through the first valve port 112. When the airflow enters the connecting cavity 121 and passes through the flow stabilizing and noise reduction component 6, it can effectively reduce airflow fluctuations and noise. When the gas enters the mounting cavity 111 and passes through the valve core 21, it can carry away the heat of the valve core 21, which is beneficial to the heat dissipation of the valve core 21. When the coil 22 is de-energized, the magnetic field disappears, and the valve core 21 moves in the direction of airflow under the action of the spring elastic force, and at the same time abuts against the inner wall of the first frame 11 under the action of airflow pressure, which has good airtightness.

[0062] Example 2

[0063] This embodiment provides a seat pneumatic controller, including a switching valve with extended heat dissipation function as described in Embodiment 1.

[0064] like Figure 10 and Figure 11 As shown, the switch valve 8 is located on the main air circuit of the seat pneumatic controller. Its second valve port 122 is connected to the air source 9, and its first valve port 112 is connected to each functional module of the seat pneumatic controller. By controlling the opening and closing of the switch valve 8, the operation of each functional module of the pneumatic system can be controlled.

[0065] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A switching valve with extended heat dissipation function, disposed within a pneumatic controller for an automotive seat, one end located on the controller housing, and the other end extending through the controller to the outside along a first direction, characterized in that, include: The valve body (1) has a first region (101) and a second region (102). The first region (101) has a first valve port (112) communicating with the inside of the controller. The second region (102) has a second valve port (122) communicating with the air source (9). A first channel (14) extending along the first direction is connected between the first valve port (112) and the second valve port (122). The first channel (14) has an installation cavity (111) located in the first region (101). A first switch assembly (2) includes a valve core (21) disposed within the mounting cavity (111); A heat dissipation structure is distributed in the first region (101) and the second region (102) for dissipating heat for the first switch assembly (2); The first switch assembly (2) has a first state and a second state. When it is in the first state, the valve core (21) is placed in the mounting cavity (111) at one end near the first valve port (112), and the first channel (14) is blocked. When it is in the second state, the valve core (21) is placed in the mounting cavity (111) at one end near the second valve port (122), and the airflow flows from the second valve port (122) through the mounting cavity (111) to the first valve port (112).

2. A switching valve with extended heat dissipation function according to claim 1, characterized in that, The valve body (1) includes a first frame (11), a stationary iron (13), and a second frame (12) connected in sequence. The first frame (11) is located in the first region (101) and has the mounting cavity (111) inside. The second frame (12) is located in the second region (102) and has a communicating cavity (121) inside. The two ends of the stationary iron (13) are respectively placed in the first frame (11) and the second frame (12). The ends of the first frame (11) and the second frame (12) that are far apart from each other have the first valve port (112) and the second valve port (122) respectively.

3. A switching valve with extended heat dissipation function according to claim 2, characterized in that, The first switch assembly (2) further includes a coil (22) and an elastic element (23). The coil (22) is sleeved on the first frame (11). The elastic element (23) is located at one end of the stationary iron (13) near the first valve port (112). The elastic element (23) is provided with the valve core (21) on the side near the first valve port (112). The valve core (21) can move along the first direction under the magnetic field of the elastic element (23) and the coil (22) to abut against the inner wall of the stationary iron (13) or the first frame (11).

4. A switching valve with extended heat dissipation function according to claim 3, characterized in that, The heat dissipation structure includes a first heat sink (3) and a second heat sink (4). The first heat sink (3) is located in the first region (101), and its two ends are respectively attached to the first frame (11) and the stationary iron (13) so that the first frame (11) and the stationary iron (13) are relatively fixed. The second heat sink (4) is located in the second region (102), and its two ends are respectively attached to the second frame (12) and the stationary iron (13) so that the second frame (12) and the stationary iron (13) are relatively fixed.

5. A switching valve with extended heat dissipation function according to claim 3, characterized in that, The heat dissipation structure includes a third heat sink (5), one end of which is located in the first area (101) and is engaged with the first frame (11), and the other end extends into the second area (102) and is engaged with the second frame (12) so that the first frame (11), the stationary iron (13) and the second frame (12) are relatively fixed.

6. A switching valve with extended heat dissipation function according to claim 1, characterized in that, The heat dissipation structure has multiple heat dissipation holes (51).

7. A switching valve with extended heat dissipation function according to claim 2, characterized in that, The connecting cavity (121) is provided with a flow stabilizing and noise reduction device (6) to stabilize the airflow in the first channel (14) and reduce the noise of the airflow.

8. A switching valve with extended heat dissipation function according to claim 7, characterized in that, The second skeleton (12) has a detection hole (124) on its side wall corresponding to the position of the connecting cavity (121). The detection hole (124) can connect the connecting cavity (121) with the external environment.

9. A switching valve with extended heat dissipation function according to claim 5, characterized in that, A magnetic sheet (7) is also provided between the third heat sink (5) and the stationary iron (13).

10. A pneumatic controller for a seat, characterized in that, Including a switching valve with extended heat dissipation function as described in any one of claims 1-9.

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