Electromagnetic valve, controller, seat assembly and automobile

Abstract

The utility model relates to an electromagnetic valve, a controller, a seat assembly and an automobile, the electromagnetic valve comprises a valve body, an electromagnetic component and a yoke, and an air inlet channel and an air outlet channel are arranged in the valve body; when the electromagnetic assembly is powered on, the air inlet channel is communicated with the air outlet channel. When the electromagnetic assembly is powered off, the air inlet channel and the air outlet channel are blocked; the yoke is fixed outside the valve body, the yoke comprises a guide part, and the guide part is suitable for being inserted into a PCB so as to guide a connector on the electromagnetic assembly to be inserted into the PCB. According to the electromagnetic valve provided by the embodiment of the utility model, reflow soldering can be conveniently carried out on the electromagnetic valve and the PCB, and the production takt and automation of products are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves and relates to a solenoid valve, a controller, a seat assembly and a car. Background Art

[0002] With the continuous development of automotive electronics, solenoid valves are increasingly used in passenger cars and have become an important part of automotive electronics technology. Traditional mechanical valves need to be controlled by mechanical force, while solenoid valves can be controlled to open and close by electrical signals. In order to improve the comfort of the vehicle and relieve the fatigue of the driver, many cars are equipped with massage seats to improve the comfort of the vehicle and the satisfaction of the driver.

[0003] In order to enhance the electromagnetic force of the electromagnetic valve, the electromagnetic valve in the related art is provided with a yoke. However, in the prior art, the connector on the electromagnetic valve needs to be manually aligned and plugged on the PCB board, which is time-consuming and laborious. Utility Model Content

[0004] The technical problem to be solved by the utility model is: in view of the problem in the prior art that the connector on the solenoid valve needs to be manually plugged into the PCB board, which is time-consuming and labor-intensive, a solenoid valve, a controller, a seat assembly and a car are provided.

[0005] In order to solve the above technical problems, on the one hand, the utility model provides a solenoid valve, including a valve body, a solenoid assembly and a yoke, wherein the valve body is provided with an air inlet and an air outlet;

[0006] When the electromagnetic component is powered on, the air inlet and the air outlet are connected; when the electromagnetic component is powered off, the air inlet and the air outlet are blocked;

[0007] The yoke is fixed to the outside of the valve body, and the yoke includes a guide portion, which is suitable for being inserted on a PCB board to guide the connector on the electromagnetic assembly to be inserted on the PCB board.

[0008] According to the solenoid valve of the embodiment of the utility model, the yoke is fixed to the outside of the valve body. When the PCB board is reflow soldering, the guide part of the yoke is inserted into the PCB board, which can guide the connector of the electromagnetic component of the solenoid valve to be inserted into the PCB board, thereby facilitating the reflow soldering of the solenoid valve and the PCB board. The operation is convenient, the process is simple, time and manpower are saved, costs can be saved, and the product production rhythm and automation are improved.

[0009] Optionally, the guide portion includes an insertion rod, a free end of the insertion rod is configured as a pin, and the pin is suitable for being inserted into a positioning hole on a PCB board.

[0010] Optionally, along the plugging direction of the plug, the plug is protruded from the connector.

[0011] Optionally, two insertion rods are arranged opposite to each other;

[0012] and / or,

[0013] Arc chamfers are arranged on both sides of the free end of the pin.

[0014] Optionally, the yoke further includes a main body and a limiting portion, the main body is connected between the limiting portion and the guide portion, and the limiting portion is installed on the outside of the valve body so that the yoke is fixed to the outside of the valve body.

[0015] Optionally, the valve body comprises a valve body, an air inlet and an air outlet, the air inlet and the air outlet are connected to the same side of the valve body, the air inlet is formed in the air inlet, the air outlet is formed in the air outlet, and a receiving cavity is provided inside the valve body, the receiving cavity is communicated with the air outlet;

[0016] When the electromagnetic assembly is powered on, the air inlet and the air outlet are connected through the accommodating cavity;

[0017] The limiting portion is installed at one axial end of the valve body, and the guiding portion is located at the other axial end of the valve body.

[0018] Optionally, the inlet of the air inlet is suitable for connecting to an air source, and the outlet of the air inlet is connected to the accommodating chamber;

[0019] The inlet of the air outlet is communicated with the accommodating cavity, and the outlet of the air outlet is suitable for connecting to an airbag.

[0020] Optionally, the valve body, the air inlet and the air outlet are all tubular, the axis of the valve body is parallel to and spaced from the axis of the air outlet, and the axis of the air inlet is perpendicular to the axis of the air outlet;

[0021] The extension direction of the main body is parallel to the axis of the valve body.

[0022] Optionally, the air outlet extends along the axis of the air outlet portion, and the inlet of the air outlet is located at the junction of the accommodating cavity and the air outlet portion;

[0023] and / or,

[0024] The air inlet passage includes a first flow passage and a second flow passage, the first flow passage extends along the axis of the air inlet portion, the second flow passage extends along the axis of the valve body, one end of the second flow passage is connected to the inner end of the first flow passage, the other end of the second flow passage is the outlet of the air inlet passage, and the outer end of the first flow passage is the inlet of the air inlet passage.

[0025] Optionally, the electromagnetic assembly comprises a coil, a moving iron core, a fixed iron core and a spring, the coil is sleeved on the outer circumference of the valve body, the moving iron core and the fixed iron core are inserted into the accommodating cavity, and along the axial direction of the coil, the coil is located between the guide portion and the limiting portion;

[0026] A first seal is installed at one axial end of the moving iron core, and a second seal is installed at the other axial end of the moving iron core, the first seal is directly opposite to the outlet of the air inlet, the fixed iron core is located on a side of the second seal away from the first seal, the fixed iron core is sealed with the cavity wall of the accommodating cavity, and the spring is arranged between the second seal and the fixed iron core;

[0027] A third flow channel is formed between the outer periphery of the moving iron core and the cavity wall of the accommodating cavity, the third flow channel is communicated with the inlet of the air outlet, and an exhaust hole penetrating along the axial direction is arranged inside the fixed iron core;

[0028] When the coil is powered off, the spring pushes the moving iron core toward the first seal, the first seal blocks the outlet of the air inlet and the second seal opens the inlet of the exhaust hole, so as to block the outlet of the air inlet and the inlet of the air outlet;

[0029] When the coil is energized, the moving iron core moves toward the fixed iron core and compresses the spring, the first seal opens the outlet of the air inlet duct and the second seal blocks the inlet of the exhaust hole, so that the outlet of the air inlet duct is connected to the inlet of the air outlet duct through the third flow channel.

[0030] Optionally, the connector is suitable for being plugged into a PCB board, the connector is arranged on the outer periphery of the valve body, and the connector is electrically connected to the coil.

[0031] Optionally, the exhaust hole is a circular stepped hole, and the exhaust hole comprises a first hole segment and a second hole segment, and the second hole segment is connected to an end of the first hole segment away from the moving iron core;

[0032] The inner diameter of the first hole segment is greater than that of the second hole segment, so as to form a spring support surface at the connection between the first hole segment and the second hole segment, one end of the spring abuts against the spring support surface, and the other end abuts against the second sealing member.

[0033] Optionally, a first sealing groove is provided on the outer periphery of the fixed iron core;

[0034] It also includes a first sealing ring, which is sleeved in the first sealing groove, and the outer ring of the first sealing ring is interference fit with the cavity wall of the accommodating cavity.

[0035] Optionally, the guide portion includes two plug rods arranged opposite to each other, one end of the plug rod is connected to the main body, and the other end of the plug rod is provided with a pin, and the pin is suitable for being plugged into a positioning hole on the PCB board;

[0036] An escape opening is formed between the two insertion rods, and an escape groove exposing the valve body is arranged on the outer periphery of the fixed iron core, and the groove bottom wall of the escape groove penetrates into the escape opening.

[0037] Optionally, a first flange and a second flange are respectively provided on both sides of the avoidance groove along the axial direction of the fixed iron core, and the guide portion is located between the first flange and the second flange to limit the displacement of the guide portion along the axial direction of the fixed iron core.

[0038] Optionally, a second sealing groove is provided on the outer periphery of the end portion of the fixed iron core exposed from the valve body;

[0039] It also includes a second sealing ring, which is sleeved in the second sealing groove. The end of the valve body close to the fixed iron core can be connected to a normally closed valve, and the outer ring of the second sealing ring is suitable for sealing with the normally closed valve.

[0040] Optionally, a third sealing ring is further included, wherein the third sealing ring is sleeved on the outside of the air inlet portion, and the outer ring of the third sealing ring is suitable for interference fitting with the shell air inlet channel on the shell.

[0041] Optionally, a slot is provided on the valve body, the limiting portion is an elastic clamping piece with one end open, the inner wall surface of the elastic clamping piece matches the bottom surface shape of the slot, and the elastic clamping piece is clamped in the slot.

[0042] Optionally, the elastic clamping member includes two clamping feet arranged opposite to each other, one end of the clamping foot is connected to the main body, and the other end of the clamping foot is formed into a cantilever structure;

[0043] A bayonet is formed between the two clamping feet. When the elastic clamping member is clamped into the clamping groove, the two clamping feet are deformed in opposite directions so that the valve body is inserted into the bayonet.

[0044] On the other hand, the embodiment of the utility model further provides a controller, comprising a housing, a PCB board and the above-mentioned solenoid valve, wherein the guide portion is inserted into the PCB board, and the PCB board and the solenoid valve are arranged in the housing;

[0045] The shell is provided with a shell air inlet passage which is communicated with the air inlet passage.

[0046] Optionally, a plurality of the solenoid valves are provided, a plurality of the shell air inlet passages are provided, and the air inlet passage of each of the solenoid valves is connected to the corresponding shell air inlet passage.

[0047] The controller provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve.

[0048] On the other hand, an embodiment of the utility model further provides a seat assembly, including a seat, an airbag and the above-mentioned controller, wherein the airbag is arranged on the seat, and the outlet of the air outlet passage of the solenoid valve is connected to the airbag to enable inflation and deflation of the airbag.

[0049] Optionally, the solenoid valve is provided in plurality, the airbag housing is provided in plurality, the airbag is provided in plurality, the air inlet of each solenoid valve is communicated with the corresponding air inlet of the housing, and the air outlet of each solenoid valve is connected with the corresponding airbag;

[0050] At least part of the airbag is arranged on the seat cushion of the seat.

[0051] The seat assembly provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve.

[0052] On the other hand, an embodiment of the utility model further provides a car, comprising the above-mentioned seat assembly.

[0053] The automobile provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a schematic diagram of a solenoid valve provided in one embodiment of the utility model;

[0055] Figure 2 This is an exploded view of a solenoid valve provided in one embodiment of the utility model;

[0056] Figure 3 It is a cross-sectional view of a valve body of a solenoid valve provided by an embodiment of the utility model;

[0057] Figure 4 It is a schematic diagram of a yoke of a solenoid valve provided in one embodiment of the utility model;

[0058] Figure 5 It is a cross-sectional view of a main fixed iron core of a solenoid valve provided in one embodiment of the utility model.

[0059] The reference numerals in the specification are as follows:

[0060] 1. Valve body; 11. Valve body; 111. Accommodating cavity; 112. Card slot; 12. Air inlet; 113. Connector; 121. Air inlet; 1211. Inlet of air inlet; 1212. Outlet of air inlet; 13. Air outlet; 131. Air outlet; 1311. Inlet of air inlet; 1312. Outlet of air inlet; 1213. First flow channel; 1214. Second flow channel;

[0061] 2. yoke; 21. main body; 22. limiter; 221. clamping foot; 222. bayonet; 23. guide; 231. plug rod; 2311. plug pin; 232. avoidance opening;

[0062] 3. Coil;

[0063] 4. Moving iron core; 41. First sealing member; 42. Second sealing member;

[0064] 5. Fixed iron core; 51. Exhaust hole; 511. First hole section; 512. Second hole section; 513. Spring support surface; 52. First sealing groove; 53. Avoidance groove; 54. First flange; 55. Second flange; 56. Second sealing groove;

[0065] 6. Spring; 7. First sealing ring; 8. Second sealing ring; 9. Third sealing ring. DETAILED DESCRIPTION

[0066] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0067] See also Figures 1 to 5 The solenoid valve provided by one embodiment of the utility model includes a valve body 1, an electromagnetic assembly and a yoke 2, wherein an air inlet 121 and an air outlet 131 are arranged in the valve body 1; when the electromagnetic assembly is powered on, the air inlet 121 is connected with the air outlet 131; when the electromagnetic assembly is powered off, the air inlet 121 and the air outlet 131 are blocked; the yoke 2 is fixed to the outside of the valve body 1, and the yoke 2 includes a guide portion 23, and the guide portion 23 is suitable for being inserted into a PCB board to guide the connector 113 on the electromagnetic assembly to be inserted into the PCB board.

[0068] According to the solenoid valve of the embodiment of the utility model, when the PCB board is reflow soldering, the guide portion 23 of the yoke 2 is inserted into the PCB board, which can guide the connector 113 of the electromagnetic component of the solenoid valve to be inserted into the PCB board, thereby facilitating the reflow soldering of the solenoid valve and the PCB board. The operation is convenient, the process is simple, time and manpower are saved, costs can be saved, and the product production rhythm and automation are improved.

[0069] In one embodiment, see Figure 1 and Figure 3 The guide portion 23 includes an insert rod 231, and the free end of the insert rod 231 is configured as a pin 2311, and the pin 2311 is suitable for being inserted into a positioning hole on the PCB board, so as to effectively ensure that the solenoid valve and the PCB board are installed in place.

[0070] In one embodiment, along the direction of the plug-in of the pin 2311, the pin 2311 protrudes from the connector 113. In this way, when the solenoid valve is plugged into the PCB, the pin 2311 is first plugged into the positioning hole on the PCB, and then the connector 113 contacts the PCB, thereby effectively guiding the plug-in 113 to be plugged into the PCB. It is understandable that the cross-sectional dimension of the pin 2311 along the direction perpendicular to the extension direction can be substantially the same as the cross-sectional dimension of the connector 113 along the direction perpendicular to the extension direction, so as to facilitate the arrangement of the PCB.

[0071] In one embodiment, two inserting rods 231 are relatively arranged so that the guide portion 23 will not rotate relative to the PCB board, and the connection is more secure.

[0072] In one embodiment, arc chamfers are provided on both sides of the free ends of the pins 2311, that is, the ends of the pins 2311 away from the main body 21, so that the pins 2311 can be smoothly inserted into the positioning holes on the PCB board.

[0073] In one embodiment, the yoke 2 further includes a main body 21 and a limiting portion 22, wherein the main body 21 is connected between the limiting portion 22 and the guide portion 23, and the limiting portion 21 is installed on the outside of the valve body 1 so that the yoke 2 is fixed on the outside of the valve body 1. The limiting portion 22 of the yoke 2 is installed on the outside of the valve body 1 so that the yoke 2 is fixed on the outside of the valve body 1, ensuring that the yoke 2 will not fall off during the movement of the car.

[0074] In one embodiment, see Figures 1 to 3 The valve body 1 includes a valve body 11, an air inlet 12 and an air outlet 13, wherein the air inlet 12 and the air outlet 13 are connected to the same side of the valve body 11, the air inlet 121 is formed in the air inlet 12, the air outlet 131 is formed in the air outlet 13, and an accommodating chamber 111 is provided inside the valve body 11, wherein the accommodating chamber 111 is communicated with the air outlet 13. When the electromagnetic assembly is energized, the air inlet 12 and the air outlet 13 are communicated with each other through the accommodating chamber 111; the limiting portion 22 is installed at one axial end of the valve body 11, and the guiding portion 23 is located at the other axial end of the valve body 11 and is spaced apart from the other axial end of the valve body 11.

[0075] In one embodiment, see Figures 1 to 3 The inlet 1211 of the air inlet 121 is suitable for connecting to an air source, and the outlet 1212 of the air inlet 121 is connected to the accommodating chamber 111; the inlet 1311 of the air outlet 131 is connected to the accommodating chamber 111, and the outlet 1312 of the air outlet 131 is suitable for connecting to an airbag. For example, the outlet 1312 of the air outlet 131 is connected to the airbag through a trachea.

[0076] In one embodiment, see Figures 1 to 3 The valve body 11, the air inlet 12 and the air outlet 13 are all tubular, the axis of the valve body 11 is parallel to the axis of the air outlet 13, and the axis of the air inlet 12 is perpendicular to the axis of the air outlet 13. The extension direction of the main body 21 is parallel to the axis of the valve body 11.

[0077] In one embodiment, see Figure 3 The air outlet 131 extends along the axis of the air outlet portion 13 , and an inlet 1311 of the air outlet 131 is located at the junction of the accommodating cavity 111 and the air outlet portion 13 .

[0078] In one embodiment, see Figure 3 The air inlet channel 121 includes a first flow channel 1213 and a second flow channel 1214, the first flow channel 1213 extends along the axis of the air inlet portion 12, the second flow channel 1214 extends along the axis of the valve body 11, one end of the second flow channel 1214 is connected to the inner end of the first flow channel 1213, the other end of the second flow channel 1214 is the outlet 1212 of the air inlet channel 121, and the outer end of the first flow channel 1213 is the inlet 1211 of the air inlet channel 121.

[0079] In one embodiment, see Figures 1 to 3 A card slot 112 is provided on the valve body 11 , and the limiting portion 22 is an elastic card connector with one end open. The inner wall surface of the elastic card connector matches the bottom surface shape of the card slot 112 , and the elastic card connector is card-connected to the card slot 112 .

[0080] In one embodiment, see Figures 1 to 3 The elastic clamping member includes two clamping feet 221 arranged opposite to each other, one end of the clamping feet 221 is connected to the main body 21, and the other end of the clamping feet 221 is formed into a cantilever structure; a bayonet 222 is formed between the two clamping feet 221, and when the elastic clamping member is clamped into the clamping groove 112, the two clamping feet 221 are deformed in opposite directions so that the valve body 11 passes through the bayonet 222. In this way, the yoke 2 is clamped and fixed to the valve body 1.

[0081] However, in other embodiments, the limiting portion 22 may also be fixed to the outside of the valve body 1 by bolt connection, riveting, or the like.

[0082] In one embodiment, see Figure 1 to Figure 2 The electromagnetic assembly includes a coil 3, a moving iron core 4, a fixed iron core 5 and a spring 6. The coil 3 is sleeved on the outer periphery of the valve body 11. The moving iron core 4 and the fixed iron core 5 are inserted into the accommodating cavity 111. Along the axial direction of the coil 3, the coil 3 is located between the guide portion 22 and the limiting portion 23; the yoke 2 is a magnetic conductive part. In this way, when the coil 3 is energized, the yoke 2 can enhance the electromagnetic force of the solenoid valve.

[0083] A first seal 41 is installed at one axial end of the moving iron core 4, and a second seal 42 is installed at the other axial end of the moving iron core 4. The first seal 41 is opposite to the outlet 1212 of the air inlet 121. The fixed iron core 5 is located on the side of the second seal 42 away from the first seal 41. The fixed iron core 5 is sealed with the cavity wall of the accommodating cavity 111, and the spring 6 is arranged between the second seal 42 and the fixed iron core 5.

[0084] A third flow channel is formed between the outer periphery of the moving iron core 4 and the cavity wall of the accommodating cavity 111, and the third flow channel is connected to the inlet 1311 of the outlet 131, and the interior of the fixed iron core 5 is provided with an exhaust hole 51 extending axially thereof; when the coil 3 is powered off, the spring 6 pushes the moving iron core 4 toward the first sealing member 41, and the first sealing member 41 blocks the outlet 1212 of the air inlet 121 and the second sealing member 42 opens the inlet of the exhaust hole 51, so as to block the outlet 1212 of the air inlet 121 and the inlet 1311 of the air outlet 131; when the coil 3 is powered on, the moving iron core 4 moves toward the fixed iron core 5 and compresses the spring 6, and the first sealing member 41 opens the outlet 1212 of the air inlet 121 and the second sealing member 42 blocks the inlet of the exhaust hole 51, so that the outlet 1212 of the air inlet 121 is connected to the inlet 1311 of the air outlet 131 through the third flow channel.

[0085] The first sealing member 41 and the second sealing member 42 may adopt the same structure to share a mold and reduce costs.

[0086] See also Figure 2 The first sealing member 41 and the second sealing member 42 are sealing plugs.

[0087] However, in other embodiments, the first sealing member 41 and the second sealing member 42 may also be sealed by packing or potting.

[0088] In one embodiment, see Figure 3 A first limit platform 114 and a second limit platform 115 protruding along the radial direction are respectively provided on the outside of the axial ends of the valve body 11, and the coil 3 is located between the first limit platform 114 and the second limit platform 115 along the axial direction to limit the axial movement of the coil 3.

[0089] In one embodiment, see Figure 1 and Figure 3 The connector 113 is suitable for plugging with the PCB board, and the connector 113 is arranged on the outer periphery of the valve body 11, and the connector 113 is electrically connected to the coil 3. The connector 113 is a pin or a terminal.

[0090] The guide portion 23 can play a guiding role in the SMT process (Surface Mounted Technology) of the PCB board and the solenoid valve, and at the same time, it can act as a force point in the installation of the air outlet portion 13 of the solenoid valve and the air pipe (connecting the airbag), thereby preventing the axial force of the air pipe installation from being borne entirely by the connector 113, and preventing the connector 113 from breaking and deforming due to excessive axial force during the installation of the solenoid valve and the air pipe.

[0091] When the connector 113 is a pin, the pin and the valve body 11 are integrally molded by plastic overmolding, which can effectively ensure the spacing and verticality of the pins, facilitate subsequent welding and installation with the PCB board, and ensure installation accuracy.

[0092] In one embodiment, see Figure 5 The exhaust hole 51 is a circular stepped hole, and the exhaust hole 51 includes a first hole section 511 and a second hole section 512, and the second hole section 512 is connected to the end of the first hole section 511 away from the moving iron core 4; the inner diameter of the first hole section 511 is larger than the inner diameter of the second hole section 512, so as to form a spring support surface 513 at the connection between the first hole section 511 and the second hole section 512, and one end of the spring 6 abuts against the spring support surface 513, and the other end abuts against the second sealing member 42. The processing depth of the spring support surface 513 can be adjusted according to the different working air pressure environments of the solenoid valve, and then the preload force of the solenoid valve can be adjusted to meet the air pressure of different working environments. At the same time, the spring support surface 513 also plays a role in limiting the spring 6, ensuring the preload force of the spring 6 during the compression process.

[0093] In one embodiment, see Figure 2 and Figure 5The fixed iron core 5 is provided with a first sealing groove 52 on its outer periphery; and further comprises a first sealing ring 7, which is sleeved in the first sealing groove 52, and the outer ring of the first sealing ring 7 is interference fit with the cavity wall of the accommodating cavity 111. In this way, the fixed iron core 5 is not easily ejected by the passive iron core 4 during operation.

[0094] In one embodiment, see Figure 1 and Figure 4 The guide part 23 includes two oppositely arranged plug rods 231; a relief opening 232 is formed between the two plug rods 231; a relief groove 53 is provided on the outer periphery of the fixed iron core 5 to expose the valve body 1, and the groove bottom wall of the relief groove 53 penetrates the relief opening 232; the relief groove 53 is provided with a first flange 54 and a second flange 55 on both sides of the axial direction of the fixed iron core 5, respectively, and the guide part 23 is located between the first flange 54 and the second flange 55 to limit the displacement of the guide part 23 along the axial direction of the fixed iron core 5. In this way, the limiting part 22 and the guide part 23 of the yoke 2 are both axially limited to ensure that the yoke 2 will not move axially.

[0095] In one embodiment, see Figure 1 and Figure 4 A second sealing groove 56 is provided on the outer periphery of the end of the fixed iron core 5 exposed from the valve body 1; it also includes a second sealing ring 8, which is sleeved in the second sealing groove 56. The end of the valve body 1 close to the fixed iron core 5 can be connected to a normally closed valve, and the outer ring of the second sealing ring 8 is suitable for sealing with the normally closed valve.

[0096] In one embodiment, see Figure 1 and Figure 2 , and also includes a third sealing ring 9, the third sealing ring 9 is sleeved on the outside of the air inlet part 12, and the outer ring of the third sealing ring 9 is suitable for interference fitting with the shell air inlet channel on the shell. In this way, the solenoid valve adopts a direct plug-in type to cooperate with the shell for ventilation, and the air inlet part 12 cooperates with the shell air inlet channel and is assembled independently. Compared with the solenoid valve row assembly in the prior art, it can reduce the assembly error and reduce the assembly difficulty. The third sealing ring 9 is assembled at the tail of the fixed iron core 5, and its main function is to connect and cooperate with other normally closed valves to prevent it from needing to maintain pressure for a long time, which causes the coil 3 of the solenoid valve to heat up, thereby extending the service life of the solenoid valve.

[0097] The first sealing ring 7, the second sealing ring 8 and the third sealing ring 9 can adopt the same structure to share a mold and reduce costs.

[0098] On the other hand, the embodiment of the utility model further provides a controller, comprising a housing, a PCB board and the solenoid valve of the above embodiment, wherein the guide portion 23 is inserted into the PCB board, and the PCB board and the solenoid valve are arranged in the housing; the housing is provided with a housing air inlet passage communicating with the air inlet passage. The PCB board is provided with a positioning hole, and the guide portion 23 is inserted into the positioning hole.

[0099] In one embodiment, a plurality of the solenoid valves are provided, a plurality of the shell air inlet passages are provided, and the air inlet passage 12 of each of the solenoid valves is communicated with the corresponding shell air inlet passage.

[0100] The controller provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve.

[0101] On the other hand, the embodiment of the utility model also provides a seat assembly, including a seat, an airbag and the above-mentioned controller, wherein the airbag is arranged on the seat, and the outlet of the air outlet 13 of the solenoid valve is connected to the airbag to realize the inflation and deflation of the airbag. The inflation and deflation of the airbag can make the airbag repeatedly expand and shrink to realize the seat massage function.

[0102] There are multiple solenoid valves, multiple airbag housing air inlet passages, and multiple airbags. The air inlet passage 12 of each solenoid valve is connected to the corresponding housing air inlet passage, and the air outlet passage 13 of each solenoid valve is connected to the corresponding airbag. At least part of the airbags are arranged on the seat cushion. That is, at least the seat cushion has a massage function.

[0103] More preferably, at least part of the airbags are arranged on the seat cushion of the seat, and another part of the airbags are arranged in the backrest of the seat to achieve a back massage function. A plurality of airbags can be arranged on the seat cushion, and a plurality of airbags can also be arranged on the backrest of the seat.

[0104] The seat assembly provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve.

[0105] On the other hand, an embodiment of the present invention further provides a car, comprising the seat assembly of the above embodiment.

[0106] The automobile provided in the embodiment of the utility model has all the advantages of the above-mentioned solenoid valve.

[0107] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A solenoid valve, characterized in that: It includes a valve body, an electromagnetic assembly and a yoke, wherein an air inlet and an air outlet are arranged in the valve body; When the electromagnetic component is powered on, the air inlet and the air outlet are connected; when the electromagnetic component is powered off, the air inlet and the air outlet are blocked; The yoke is fixed to the outside of the valve body, and the yoke includes a guide portion, which is suitable for being inserted on a PCB board to guide the connector on the electromagnetic assembly to be inserted on the PCB board.

2. The solenoid valve according to claim 1, characterized in that: The guide portion comprises an insertion rod, the free end of the insertion rod is configured as a pin, and the pin is suitable for being inserted into a positioning hole on a PCB board.

3. The solenoid valve according to claim 2, characterized in that: Along the plugging direction of the plug pin, the plug pin protrudes from the connector.

4. The solenoid valve according to claim 2, characterized in that: The inserting rods are arranged with two opposite sides; and / or, Arc chamfers are arranged on both sides of the free end of the pin.

5. The solenoid valve according to claim 1, characterized in that: The yoke also includes a main body and a limiting part, the main body is connected between the limiting part and the guide part, and the limiting part is installed on the outside of the valve body so that the yoke is fixed to the outside of the valve body.

6. The solenoid valve according to claim 5, characterized in that: The valve body comprises a valve body, an air inlet and an air outlet, wherein the air inlet and the air outlet are connected to the same side of the valve body, the air inlet is formed in the air inlet, the air outlet is formed in the air outlet, and an accommodating cavity is provided inside the valve body, and the accommodating cavity is communicated with the air outlet; When the electromagnetic assembly is powered on, the air inlet and the air outlet are connected through the accommodating cavity; The limiting portion is installed at one axial end of the valve body, and the guiding portion is located at the other axial end of the valve body.

7. The solenoid valve according to claim 6, characterized in that: The inlet of the air inlet is suitable for connecting to an air source, and the outlet of the air inlet is connected to the accommodating chamber; The inlet of the air outlet is communicated with the accommodating cavity, and the outlet of the air outlet is suitable for connecting to an airbag.

8. The solenoid valve according to claim 6, characterized in that: The valve body, the air inlet and the air outlet are all tubular, the axis of the valve body is parallel to and spaced from the axis of the air outlet, and the axis of the air inlet is perpendicular to the axis of the air outlet; The extension direction of the main body is parallel to the axis of the valve body.

9. The solenoid valve according to claim 8, characterized in that: The air outlet extends along the axis of the air outlet portion, and the inlet of the air outlet is located at the junction of the accommodating cavity and the air outlet portion; and / or, The air inlet passage includes a first flow passage and a second flow passage, the first flow passage extends along the axis of the air inlet portion, the second flow passage extends along the axis of the valve body, one end of the second flow passage is connected to the inner end of the first flow passage, the other end of the second flow passage is the outlet of the air inlet passage, and the outer end of the first flow passage is the inlet of the air inlet passage.

10. The solenoid valve according to claim 6, characterized in that: The electromagnetic assembly includes a coil, a moving iron core, a fixed iron core and a spring, wherein the coil is sleeved on the outer periphery of the valve body, the moving iron core and the fixed iron core are inserted into the accommodating cavity, and along the axial direction of the coil, the coil is located between the guide portion and the limiting portion; A first seal is installed at one axial end of the moving iron core, and a second seal is installed at the other axial end of the moving iron core, the first seal is directly opposite to the outlet of the air inlet, the fixed iron core is located on a side of the second seal away from the first seal, the fixed iron core is sealed with the cavity wall of the accommodating cavity, and the spring is arranged between the second seal and the fixed iron core; A third flow channel is formed between the outer periphery of the moving iron core and the cavity wall of the accommodating cavity, the third flow channel is communicated with the inlet of the air outlet, and an exhaust hole penetrating along the axial direction is arranged inside the fixed iron core; When the coil is powered off, the spring pushes the moving iron core toward the first seal, the first seal blocks the outlet of the air inlet and the second seal opens the inlet of the exhaust hole, so as to block the outlet of the air inlet and the inlet of the air outlet; When the coil is energized, the moving iron core moves toward the fixed iron core and compresses the spring, the first seal opens the outlet of the air inlet duct and the second seal blocks the inlet of the exhaust hole, so that the outlet of the air inlet duct is connected to the inlet of the air outlet duct through the third flow channel.

11. The solenoid valve according to claim 10, characterized in that: The connector is suitable for plugging with a PCB board, the connector is arranged on the outer periphery of the valve body, and the connector is electrically connected to the coil.

12. The solenoid valve according to claim 10, characterized in that: The exhaust hole is a circular stepped hole, and the exhaust hole includes a first hole segment and a second hole segment, wherein the second hole segment is connected to an end of the first hole segment away from the moving iron core; The inner diameter of the first hole segment is greater than that of the second hole segment, so as to form a spring support surface at the connection between the first hole segment and the second hole segment, one end of the spring abuts against the spring support surface, and the other end abuts against the second sealing member.

13. The solenoid valve according to claim 10, characterized in that: A first sealing groove is provided on the outer periphery of the fixed iron core; It also includes a first sealing ring, which is sleeved in the first sealing groove, and the outer ring of the first sealing ring is interference fit with the cavity wall of the accommodating cavity.

14. The solenoid valve according to claim 10, characterized in that: The guide portion includes two plug rods arranged opposite to each other, one end of the plug rod is connected to the main body, and the other end of the plug rod is provided with a pin, and the pin is suitable for being inserted into a positioning hole on the PCB board; An escape opening is formed between the two insertion rods, and an escape groove exposing the valve body is arranged on the outer periphery of the fixed iron core, and the groove bottom wall of the escape groove penetrates into the escape opening.

15. The solenoid valve according to claim 14, characterized in that: The avoidance groove is provided with a first flange and a second flange on both sides of the axial direction of the fixed iron core respectively, and the guide portion is located between the first flange and the second flange to limit the displacement of the guide portion along the axial direction of the fixed iron core.

16. The solenoid valve according to claim 10, characterized in that A second sealing groove is provided on the outer periphery of the end of the fixed iron core exposed to the valve body; It also includes a second sealing ring, which is sleeved in the second sealing groove. The end of the valve body close to the fixed iron core can be connected to a normally closed valve, and the outer ring of the second sealing ring is suitable for sealing with the normally closed valve.

17. The solenoid valve according to claim 6, characterized in that: It also includes a third sealing ring, which is sleeved on the outside of the air inlet portion, and the outer ring of the third sealing ring is suitable for interference fitting with the shell air inlet channel on the shell.

18. The solenoid valve according to claim 6, characterized in that: The valve body is provided with a clamping groove, the limiting part is an elastic clamping piece with one end open, the inner wall surface of the elastic clamping piece matches the bottom surface shape of the clamping groove, and the elastic clamping piece is clamped in the clamping groove.

19. The solenoid valve according to claim 18, characterized in that The elastic clamping member comprises two clamping feet arranged opposite to each other, one end of the clamping foot is connected to the main body, and the other end of the clamping foot is formed into a cantilever structure; A bayonet is formed between the two clamping feet. When the elastic clamping member is clamped into the clamping groove, the two clamping feet are deformed in opposite directions so that the valve body is inserted into the bayonet.

20. A controller, characterized in that: It comprises a housing, a PCB board and the solenoid valve according to any one of claims 1 to 19, wherein the guide portion is inserted into the PCB board, and the PCB board and the solenoid valve are arranged in the housing; The shell is provided with a shell air inlet passage which is communicated with the air inlet passage.

21. The controller according to claim 20, characterized in that There are a plurality of solenoid valves, and there are a plurality of housing air inlet passages. The air inlet passage of each solenoid valve is communicated with the corresponding housing air inlet passage.

22. A seat assembly, characterized in that: It comprises a seat, an airbag and the controller according to claim 20 or 21, wherein the airbag is arranged on the seat, and the outlet of the air outlet passage of the solenoid valve is connected to the airbag to enable inflation and deflation of the airbag.

23. The seat assembly according to claim 22, characterized in that: There are multiple solenoid valves, multiple airbag housing air inlet passages, and multiple airbags. The air inlet passage of each solenoid valve is connected to the corresponding housing air inlet passage, and the air outlet passage of each solenoid valve is connected to the corresponding airbag. At least part of the airbag is arranged on the seat cushion of the seat.

24. A car, characterized in that: Includes the seat assembly described in claim 22 or 23.

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