CN219177036U - Solenoid valve and car seat - Google Patents

Abstract

The utility model discloses an electromagnetic valve and an automobile seat, wherein the electromagnetic valve comprises a first sub-electromagnetic valve, a second sub-electromagnetic valve and an air passage body, the first sub-electromagnetic valve comprises a first mounting cavity, the second sub-electromagnetic valve comprises a second mounting cavity, and the first sub-electromagnetic valve is fixedly connected with the second sub-electromagnetic valve. The air passage body penetrates through the first installation cavity and the second installation cavity. The airway body also includes a first airway and a second airway. The electromagnetic valve further comprises an inflation channel and a deflation channel, the inflation channel and the deflation channel penetrate through the first installation cavity and the second installation cavity, the first air channel is a partial inflation channel, the second air channel is a partial deflation channel, and in the deflation state, the first air channel and the second air channel are communicated to serve as a partial deflation channel. The air passage body integrates a part of inflation channel and a part of deflation channel, so that the structure of the electromagnetic valve is more compact, and the miniaturization of the electromagnetic valve is realized.

Description

Solenoid valve and car seat

Technical Field

The utility model relates to the field of electromagnetic valves, in particular to an electromagnetic valve and an automobile seat.

Background

In order to improve the comfort of the car seat, part of the car seat is provided with a pneumatic lumbar support system. The pneumatic waist support system realizes the support of the waist support and the adjustment of the comfort level of the waist support through the inflation and deflation of the air bags, and the inflation and deflation of the air bags are controlled through the electromagnetic valves. The solenoid valve must meet the functions of inflation, pressure maintaining and deflation at the same time. Along with the promotion to the comfort level requirement of car seat, car seat still integrates functions such as ventilation, heating simultaneously, and pneumatic waist holds in the palm system installation space is limited. Because the size of the electromagnetic valve can directly influence the size of the volume of the pneumatic waist support system, the electromagnetic valve with compact structure needs to be developed.

Disclosure of Invention

The utility model provides a solenoid valve with a compact structure, which can reduce the volume of a pneumatic waist support system of an automobile seat, so that the automobile seat integrates more functions in a limited space.

The first aspect of the utility model provides an electromagnetic valve, which comprises a first sub-electromagnetic valve, a second sub-electromagnetic valve and an air passage body, wherein the first sub-electromagnetic valve comprises a first mounting cavity, the second sub-electromagnetic valve comprises a second mounting cavity, and the electromagnetic valve further comprises an air ventilation port communicated with the first mounting cavity and the second mounting cavity;

along solenoid valve length direction, the air flue body includes relative first lateral wall and the second lateral wall that sets up and connects first lateral wall with the periphery wall of second lateral wall, be equipped with first air flue on the air flue body and with the second air flue that first air flue interval set up, first air flue runs through first lateral wall and second lateral wall, first air flue includes the first gas port that runs through first lateral wall and runs through the second gas port of second lateral wall, the second air flue runs through first lateral wall and periphery wall, the second air flue includes the third gas port that runs through first lateral wall and runs through the fourth gas port of periphery wall;

Along the length direction of the electromagnetic valve, the first sub electromagnetic valve is fixedly connected with the second sub electromagnetic valve, the air passage body penetrates through the first mounting cavity and the second mounting cavity, the first side wall of the air passage body is positioned in the first mounting cavity, the second side wall of the air passage body is positioned in the second mounting cavity, and the fourth air port is in butt joint and communication with the air ventilation port;

the electromagnetic valve further comprises an inflation channel and a deflation channel, the inflation channel and the deflation channel penetrate through the first installation cavity and the second installation cavity, the first air channel is a part of the inflation channel, the second air channel is a part of the deflation channel, and in a deflation state, the first air channel and the second air channel are communicated to be used as a part of the deflation channel.

In a possible implementation manner, a first sealing gasket is arranged in the first mounting cavity, the first sealing gasket abuts against the first side wall of the air passage body to seal the third air port in the inflation state, and the first sealing gasket is far away from the third air port in the deflation state, so that the first air passage serves as a part of the deflation channel.

In a possible implementation manner, the first installation cavity and the second installation cavity are communicated to form a connection cavity, the electromagnetic valve further comprises a silencing part, the air passage body is contained in the connection cavity, the air ventilation opening penetrates through the cavity wall of the connection cavity, and the air ventilation opening is communicated with the silencing part and the fourth air opening.

In a possible implementation manner, the first sub-electromagnetic valve further comprises a first movable iron core, the second sub-electromagnetic valve further comprises a second movable iron core, the first movable iron core is arranged in the first installation cavity, the first sealing gasket is arranged at the end part of the first movable iron core, a first sub-channel is formed between the first movable iron core and the first installation cavity, the second movable iron core is arranged in the second installation cavity, and a second sub-channel is formed between the second movable iron core and the second installation cavity;

the inflation channel comprises a first sub-channel and a second sub-channel, and the first air channel is connected between the first sub-channel and the second sub-channel;

the bleed passage includes the second sub-passage, the first air passage, the second air passage, and a gap between the first gasket and a first sidewall of the air passage body.

In a possible implementation manner, the air passage body is provided with a fool-proof notch, and the fool-proof notch is positioned at the joint of the first side wall and the peripheral wall of the air passage body;

the first mounting cavity comprises a first lug, the first lug is arranged in the first mounting cavity in a protruding mode, and the first lug abuts against the fool-proof notch.

In a possible implementation manner, the first sub-electromagnetic valve comprises a first notch communicated with the first installation cavity, the second sub-electromagnetic valve comprises a third notch communicated with the second installation cavity, the electromagnetic valve further comprises a magnetic conduction plate assembly, the magnetic conduction plate assembly comprises a first magnetic conduction plate and a second magnetic conduction plate, the first magnetic conduction plate penetrates through the third notch to be located in the second installation cavity and partially abutted against the outer peripheral wall of the air channel body, and the second magnetic conduction plate penetrates through the first notch to be located in the first installation cavity and partially abutted against the outer peripheral wall of the air channel body.

In a possible implementation manner, the first sub-electromagnetic valve comprises a first valve body bracket, the first valve body bracket comprises a first body and a second convex disc, the first body comprises the first mounting cavity, the first body comprises an outer peripheral wall and an inner peripheral wall, and the second convex disc is arranged on the outer peripheral wall of the first body in a convex mode;

the second sub electromagnetic valve comprises a second valve body bracket and a fifth convex disc, the second body comprises the second mounting cavity, the second body comprises an outer peripheral wall and an inner peripheral wall, and the fifth convex disc is convexly arranged on the outer peripheral wall of the second body;

The first magnetic conduction plate comprises a first clamping part and a second clamping part, wherein the first clamping part is clamped to the second convex disc, and the second clamping part is clamped to the fifth convex disc.

In a possible implementation manner, the first valve body bracket further comprises a fourth convex disc, and the fourth convex disc is convexly arranged on the peripheral wall of the first body along the length direction of the electromagnetic valve and is arranged at a distance from the second convex disc;

the second valve body bracket further comprises a seventh convex disc, and the seventh convex disc is convexly arranged on the outer peripheral wall of the second body along the length direction of the electromagnetic valve and is arranged at intervals with the fifth convex disc;

the second magnetic conduction plate comprises a third clamping part and a fourth clamping part, wherein the third clamping part is clamped to the fourth convex disc, and the fourth clamping part is clamped to the seventh convex disc.

In a possible implementation manner, the first mounting cavity comprises a third cavity, the second mounting cavity comprises a fourth cavity, the third cavity is located on one side of the fourth convex disc, the fourth cavity is located on one side of the fifth convex disc, the third cavity and the fourth cavity are in butt joint to form the connecting cavity, and the air channel is located in the third cavity and the fourth cavity;

The fourth convex disc comprises a first opening, the fifth convex disc comprises a second opening, the first opening is connected with the third cavity, the second opening is connected with the fourth cavity, and the first opening and the second opening are in butt joint to form the ventilation opening.

In a possible implementation manner, the second valve body support further includes a sixth convex disc, the sixth convex disc is convexly arranged on the outer peripheral wall of the second body and is arranged with the fifth convex disc at intervals, the silencing part is formed between the fourth convex disc, the sixth convex disc and the second magnetic conduction plate, the silencing part is connected with the first opening and the second opening, and the silencing part is provided with silencing cotton.

In a possible implementation manner, the second clamping part comprises a second clamping part body, a second clamping groove and a first protruding strip, the second clamping groove penetrates through the second clamping part body along the length direction of the electromagnetic valve, the first protruding strip is convexly arranged on the inner side wall of the second clamping groove, and the shapes of the first protruding strip and the third gap are matched;

the third clamping portion comprises a third clamping portion body, a third clamping groove and a third protruding strip, the third clamping portion body, the third clamping groove and the third protruding strip are located along the length direction of the electromagnetic valve, the third clamping groove penetrates through the third clamping portion body, the third protruding strip is protruding on the inner side wall of the third clamping groove, and the third protruding strip is matched with the first notch in shape.

In one possible implementation manner, along the length direction of the electromagnetic valve, the first clamping portion is aligned with the end portion, away from the air passage body, of the first movable iron core, and the fourth clamping portion is aligned with the end portion, away from the air passage body, of the second movable iron core.

In a possible implementation manner, the first sub-electromagnetic valve further comprises a first coil and a first reset spring, the first coil is sleeved outside the first body, and the first reset spring is sleeved on one side, close to the air channel body, of the first movable iron core; the second sub-solenoid valve further comprises a second coil and a second reset spring, the second coil is sleeved outside the second body, and the second reset spring is sleeved on one side, close to the air channel body, of the second movable iron core.

A second aspect of the present utility model provides a car seat on which the solenoid valve as described above is mounted, the lumbar support airbag and/or the side wing airbag of the car seat being inflated or deflated by the solenoid valve.

The utility model provides a solenoid valve, which is characterized in that a first air passage and a second air passage are arranged in an air passage body, the first air passage is used as a partial air charging passage in an air charging state, and the first air passage and the second air passage are communicated to be used as a partial air discharging passage in an air discharging state, namely, the air passage body integrates the partial air charging passage and the partial air discharging passage at the same time, so that the structure of the solenoid valve is more compact. Meanwhile, the air flue body is also used as a static iron core in the electromagnetic valve, so that the integration of the static iron core and the air flue is realized, the static iron core is not required to be additionally arranged in the electromagnetic valve, and the structure of the electromagnetic valve is simplified. Thus, miniaturization of the solenoid valve is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained by those skilled in the art without the inventive effort.

FIG. 1 is a schematic diagram of a solenoid valve according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the solenoid valve of FIG. 1;

FIG. 3 is a schematic view of an alternative angular exploded construction of the solenoid valve of FIG. 1;

FIG. 4 is a schematic view of a first valve body mount of the solenoid valve of FIG. 2;

FIG. 5 is a schematic cross-sectional view of the first valve body mount shown in FIG. 4;

FIG. 6 is a schematic cross-sectional view of a first sub-solenoid valve of the solenoid valve shown in FIG. 1;

FIG. 7 is a schematic view of a second valve body mount of the solenoid valve of FIG. 2;

FIG. 8 is a schematic cross-sectional view of the second valve body mount shown in FIG. 7;

FIG. 9 is a schematic cross-sectional view of a second sub-solenoid valve of the solenoid valve shown in FIG. 1;

FIG. 10 is a schematic view of a first magnetically permeable plate of the solenoid valve of FIG. 2;

FIG. 11 is a schematic view of a second magnetically permeable plate of the solenoid valve shown in FIG. 2;

FIG. 12 is a schematic view of the structure of the airway body shown in FIG. 2;

FIG. 13 is a schematic view of the airway body of FIG. 10 at another angle;

FIG. 14 is a schematic cross-sectional view of the airway body A-A of FIG. 13;

FIG. 15 is a schematic cross-sectional view of the solenoid valve of FIG. 1, with the solenoid valve in a dwell condition;

FIG. 16 is a schematic cross-sectional view of the solenoid valve of FIG. 1 in an inflated condition;

FIG. 17 is a schematic cross-sectional view of the solenoid valve of FIG. 1 in a venting condition.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides an automobile seat. In this embodiment, the car seat includes a seat body, an electromagnetic valve 100 mounted to the seat body, and a waist support airbag and/or a side wing airbag, which are inflated or deflated by the electromagnetic valve 100.

It can be understood that the practical application scenario of the electromagnetic valve 100 provided in the embodiment of the present utility model may be, but is not limited to, an automobile seat, and may be other application scenarios, and the embodiment of the present utility model does not strictly limit the application scenario of the electromagnetic valve 100. The solenoid valve 100 may be directly connected to the airbag, or may be indirectly connected to the airbag through an intake pipe. The embodiment of the present utility model will be described by taking the direct connection of the solenoid valve 100 and the airbag as an example.

Referring to fig. 1, 2 and 3, the present utility model provides a solenoid valve 100, which includes a first sub-solenoid valve 10, a second sub-solenoid valve 20, a magnetic plate assembly 30 and an air passage body 40. The magnetic conductive plate assembly 30 includes a first magnetic conductive plate 31 and a second magnetic conductive plate 32. The first magnetically permeable plate 31 includes a first magnetically permeable plate body 311. The second magnetic conductive plate 32 includes a second magnetic conductive plate body 321. For convenience of description, the length direction of the first and second magnetic conductive plate bodies 311 and 321 (the length direction of the first and second sub solenoid valves 10 and 20) is the X direction, the width direction of the first and second magnetic conductive plate bodies 311 and 321 is the Y direction, and the thickness direction of the first and second magnetic conductive plate bodies 311 and 321 is the Z direction. The X direction, the Y direction and the Z direction are perpendicular to each other. It is also understood that the axial direction of the first sub-solenoid valve 10 and the second sub-solenoid valve 20 is the X direction.

Along the X direction, the first sub solenoid valve 10 and the second sub solenoid valve 20 are fixedly connected. The first sub solenoid valve 10 includes a first mounting chamber (not shown), and the second sub solenoid valve 20 includes a second mounting chamber (not shown). The air passage body 40 penetrates through the first mounting cavity and the second mounting cavity. Specifically, one end of the air passage body 40 is accommodated in the first installation cavity of the first sub-solenoid valve 10, and the other end is accommodated in the second installation cavity of the second sub-solenoid valve 20. The first and second magnetic conductive plates 31 and 32 are disposed at both sides of the solenoid valve 100, respectively, in the X direction. The first and second solenoid valves 10 and 20 are fixedly connected by the first and second solenoid plates 31 and 32.

Referring to fig. 2 to 6 in combination, the first sub-solenoid valve 10 includes a first valve body holder 11 and a first plunger 12. The first valve body support 11 is of a hollow structure with two open ends, a first installation cavity A is formed in the first valve body support 11, and the first movable iron core 12 is arranged in the first installation cavity A of the first valve body support 11 in a penetrating mode. An opening 117 at one end of the first valve body holder 11 is used for air pump connection.

The first valve body holder 11 includes a first body 111, a first cam 112, a second cam 113, a third cam 114, and a fourth cam 115. The first convex plate 112, the second convex plate 113, the third convex plate 114, and the fourth convex plate 115 are sequentially arranged at intervals in the X direction on the outer periphery of the first body 111.

The first body 111 is a hollow cylindrical structure including a first cylinder 1111, a second cylinder 1112, and a third cylinder 1113, the first cylinder 1111, the second cylinder 1112, and the third cylinder 1113 are sequentially connected in the X direction, and diameters of the first cylinder 1111, the second cylinder 1112, and the third cylinder 1113 are sequentially increased. In the X direction, the first cylinder 1111 includes a first cavity 1111a penetrating the first cylinder 1111, the second cylinder 1112 includes a second cavity 1112a penetrating the second cylinder 1112, the third cylinder 1113 includes a third cavity 1113a penetrating the third cylinder 1113, and diameters of the first cavity 1111a, the second cavity 1112a, and the third cavity 1113a sequentially increase. The first chamber 1111a, the second chamber 1112a and the third chamber 1113a are sequentially communicated to form a first installation chamber a of the first valve body holder 11. The first cylinder 1111, the second cylinder 1112, and the third cylinder 1113 each include an outer peripheral wall and an inner peripheral wall. The third cavity 1113a of the third column 1113 is provided with a first protrusion 1114, and the first protrusion 1114 is protruding on one side of the inner peripheral wall of the third column 1113 near the second column 1112, i.e. the first protrusion 1114 is protruding on the third cavity 1113a. In this embodiment, in order to improve the air tightness of the first valve body bracket 11, a first transition cavity 1114a may be further disposed between the first cavity 1111a and the second cavity 1112a, the first cavity 1111a is indirectly communicated with the second cavity 1112a through the first transition cavity 1114a, and the diameter of the first transition cavity 1114a is smaller than that of the first cavity 1111a.

It will be appreciated that in other embodiments, the diameters of the first cylinder 1111, the second cylinder 1112, and the third cylinder 1113 may be equal, as long as the diameters of the first chamber 1111a, the second chamber 1112a, and the third chamber 1113a are sequentially increased, and the installation requirement of the first valve body bracket 11 is satisfied. The first cavity 1111a may also be in direct communication with the second cavity 1112a, i.e., there is no first transition cavity 1114a.

The first body 111 further includes a first notch B and a second notch C. The first notch B and the second notch C penetrate the outer peripheral wall and the inner peripheral wall of the third cylinder 1113 in the radial direction of the third cylinder 1113. Along the Y direction, the first notch B and the second notch C are symmetrically disposed on opposite sides of the axis of the third column 1113, and the first notch B and the second notch C are not communicated, that is, a first rib D is formed between the first notch B and the second notch C (the first rib D is a portion of the third column 1113 located between the first notch B and the second notch C). The first notch B, the second notch C and the first rib D are used for being clamped with the second magnetic conductive plate 32.

The first cam 112 is disc-shaped, the first cam 112 is arranged on one side of the outer peripheral wall of the second cylinder 1112, which is close to the first cylinder 1111, and the first cam 112 extends along the outer peripheral wall far away from the second cylinder 1112 and is arranged at an included angle with the outer Zhou Bicheng of the second cylinder 1112.

The second convex plate 113 is in a rectangular disc shape as a whole, and the second convex plate 113 is convexly arranged on the outer peripheral wall of the second cylinder 1112 and is arranged at intervals with the first convex plate 112. The second cam 113 extends along an outer peripheral wall away from the second cylinder 1112 and is disposed at an angle to an outer Zhou Bicheng of the second cylinder 1112.

It is understood that the first cam 112 and the second cam 113 may have a rectangular disk shape as a whole, a circular disk shape, or other polygonal disk shapes.

The third cam 114 is in a rectangular disc shape as a whole, the third cam 114 is convexly arranged on one side of the outer peripheral wall of the third column 1113 close to the second column 1112, and the third cam 114 extends along the outer peripheral wall far away from the third column 1113 and is arranged at an included angle with the outer Zhou Bicheng of the third column 1113. In the X direction, the vertical distance between the second cam 113 and the third cam 114 is greater than the vertical distance between the second cam 113 and the first cam 112. The third cam 114 includes a first side 1141 and a second side 1142 opposite to each other along the Z direction, and a third side 1143 and a fourth side 1144 opposite to each other along the Y direction, where the third side 1143 and the fourth side 1144 are connected between the first side 1141 and the second side 1142.

The third cam 114 is further provided with a first through groove 1145 and a second through groove 1146, the first through groove 1145 is located at one side of the first side 1141 of the third cam 114 facing the second side 1142, and the first through groove 1145 extends along the Y direction and penetrates through the third side 1143 and the fourth side 1144 of the third cam 114; the second through slot 1146 is located on a side of the second side 1142 facing the first side 1141, and the second through slot 1146 extends along the Y direction and penetrates the third side 1143 and the fourth side 1144 of the third cam 114.

The fourth cam 115 is in a rectangular disc shape as a whole, the fourth cam 115 is convexly arranged on one side of the outer peripheral wall of the third cylinder 1113 away from the second cylinder 1112, and the fourth cam 115 extends along the outer peripheral wall away from the third cylinder 1113 and is disposed at an included angle with the outer side Zhou Bicheng of the third cylinder 1113. The third cavity 1113a in the third cylinder 1113 is located on the side of the fourth cam 115. The vertical distance between the third cam 114 and the fourth cam 115 is smaller than the vertical distance between the second cam 113 and the third cam 114. The fourth cam 115 is further provided with a first opening 1151. The first opening 1151 is disposed on the fourth cam 115 near a side of the first rib D. The first opening 1151 extends in the Z direction and penetrates the outer and inner peripheral walls of the third cylinder 1113 and the side edges of the fourth cam 115. The first opening 1151 is connected to the third cavity 1113 a. The fourth cam is further provided with a second bump 1152, the second bump 1152 is convexly disposed on a side surface of the fourth cam 115 facing away from the third cam 114, and the second bump 1152 is configured to be clamped with the second valve body bracket 21.

Referring to fig. 2 and 3 in combination, the first movable core 12 includes a first movable core body 121, the first movable core body 121 is integrally cylindrical, and a diameter of the first movable core body 121 is smaller than a diameter of the second cavity 1112a on the first body 111. In the X direction, the first plunger body 121 includes a first end surface 1211 and a second end surface 1212 disposed opposite thereto. The first plunger body 121 is further provided with a first mounting groove 1211a and a second mounting groove 1212a. The first mounting groove 1211a is concavely provided at the first end surface 1211 of the first plunger 12, and the second mounting groove 1212a is concavely provided at the second end surface 1212 of the first plunger 12. The first and second mounting grooves 1211a and 1212a are used to assemble a gasket. It is understood that the shape of the first and second mounting grooves 1211a and 1212a may be determined according to the shape of the gasket.

Referring to fig. 2 to 6, the first movable iron core 12 is disposed in the second cavity 1112a of the first body 111 in a penetrating manner, and a gap is formed between the first movable iron core 12 and the second cavity 1112a in a radial direction of the second cavity 1112a, that is, a first sub-channel 1115 is formed between the first movable iron core 12 and the first mounting cavity a.

The first sub solenoid valve 10 further includes a first coil 13, a first coil leg 14, a first gasket 15, a second gasket 16, and a first return spring 17. The first coil 13 is sleeved outside the second cylinder 1112, specifically, between the second cam 113 and the third cam 114. The number of the first coil fillets 14 is two, and the two first coil fillets 14 are respectively disposed in the first through groove 1145 and the second through groove 1146 of the third cam 114. One end of one first coil soldering leg 14 is connected with a positive electrode of a power supply, the other end of the first coil soldering leg is connected with the first coil 13, one end of the other first coil soldering leg 14 is connected with a negative electrode of the power supply, the other end of the other first coil soldering leg is connected with the first coil 13, and current is supplied to the first coil 13 through the first coil soldering leg 14. The first gasket 15 and the second gasket 16 are provided at opposite ends of the first plunger 12. Specifically, the first gasket 15 is mounted to the second mounting groove 1212a of the first plunger body 121, and the second gasket 16 is mounted to the first mounting groove 1211a of the first plunger body 121. The first return spring 17 is sleeved at one end of the first movable iron core body 121 away from the first column 1111.

Referring to fig. 2, 3 and 7 to 9 in combination, the second sub-solenoid valve 20 includes a second valve body holder 21 and a second plunger 22. The second valve body support 21 is of a hollow structure with two open ends, and a second installation cavity E is arranged inside the second valve body support 21. The second movable iron core 22 is arranged in the second mounting cavity E of the second valve body bracket 21 in a penetrating way. An end opening 218 of the second valve body holder 21 remote from the air passage body 40 is used for receiving an air bag.

The second valve body holder 21 includes a second body 211, a fifth cam 212, a sixth cam 213, a seventh cam 214, an eighth cam 215, and a bead 216. The fifth convex disc 212, the sixth convex disc 213, the seventh convex disc 214, and the eighth convex disc 215 are sequentially arranged at intervals in the X direction on the outer periphery of the second body 211. The rib 216 is protruding on the outer periphery of the second body 211.

The second body 211 includes a fourth cylinder 2111, a fifth cylinder 2112, and a sixth cylinder 2113, the fourth cylinder 2111, the fifth cylinder 2112, and the sixth cylinder 2113 are sequentially connected in the X direction, and diameters of the fourth cylinder 2111, the fifth cylinder 2112, and the sixth cylinder 2113 are sequentially reduced. In the X direction, the fourth cylinder 2111 includes a fourth cavity 2111a penetrating the fourth cylinder 2111, the fifth cylinder 2112 includes a fifth cavity 2112a penetrating the fifth cylinder 2112, the sixth cylinder 2113 includes a sixth cavity 2113a penetrating the sixth cylinder 2113, and diameters of the fourth cavity 2111a, the fifth cavity 2112a, and the sixth cavity 2113a decrease in order. The fourth, fifth and sixth cavities 2111a, 2112a and 2113a are sequentially communicated, and the fourth, fifth and sixth cavities 2111a, 2112a and 2113a together constitute a second mounting cavity E of the second body 211. The fourth cylinder 2111, the fifth cylinder 2112, and the sixth cylinder 2113 each include an outer peripheral wall and an inner peripheral wall. In this embodiment, in order to improve the air tightness of the second valve body support 21, a second transition cavity 2114a may be further disposed between the fifth cavity 2112a and the sixth cavity 2113a, and the sixth cavity 2113a is indirectly communicated with the fifth cavity 2112a through the second transition cavity 2114a, and the diameter of the second transition cavity 2114a is smaller than that of the sixth cavity 2113a.

It will be appreciated that in other embodiments, the diameters of the fourth cylinder 2111, the fifth cylinder 2112 and the sixth cylinder 2113 may be equal, as long as the diameters of the fourth chamber 2111a, the fifth chamber 2112a and the sixth chamber 2113a are sequentially reduced, and the installation requirement of the second valve body holder 21 is satisfied. In order to improve the connection stability of the sixth cylinder 2113 with the airbag, the outer peripheral wall of the sixth cylinder 2113 may be partially provided with a special structure, for example, grooves, protrusions, or the like. The sixth chamber 2113a may also be in direct communication with the fifth chamber 2112a, i.e., there is no second transition chamber 2114a.

The second body 211 further includes a third notch F and a fourth notch G. The third notch F and the fourth notch G penetrate the outer peripheral wall and the inner peripheral wall of the fourth cylinder 2111 in the radial direction of the fourth cylinder 2111. Along the Y direction, the third notch F and the fourth notch G are symmetrically disposed on opposite sides of the axis of the fourth cylinder 2111, and the third notch F and the fourth notch G are not communicated, that is, a second rib H is formed between the third notch F and the fourth notch G (the second rib H is a portion of the fourth cylinder 2111 located between the third notch F and the fourth notch G). The third notch F, the fourth notch G and the second rib H are configured to be clamped to the first magnetic conductive plate 31.

The fifth cam 212 is in a rectangular disc shape as a whole, the fifth cam 212 is convexly arranged on one side of the outer peripheral wall of the fourth cylinder 2111 far away from the fifth cylinder 2112, and the fifth cam 212 extends along the outer peripheral wall far away from the fourth cylinder 2111 and is arranged at an included angle with the outer Zhou Bicheng of the fourth cylinder 2111. Fourth cavity 2111a in fourth cylinder 2111 is located on the side of fifth cam 212. The fifth cam 212 is further provided with a second opening 2121 and a third opening 2122, and the second opening 2121 is disposed on a side of the fifth cam 212 opposite to the second rib H. The second opening 2121 extends in the Z direction and penetrates the outer and inner peripheral walls of the fourth column 2111 and the side edge of the fifth cam 212. The second opening 2121 is connected to the fourth cavity 2111 a. The third opening 2122 is disposed on the fifth cam 212 near a side of the second rib H. In the X-direction, a third opening 2122 is concavely provided in the side of the fifth cam 212 facing away from the sixth cam 213, the third opening 2122 being adapted to receive the second bump 1152 of the first valve body holder 11.

The sixth cam 213 is a rectangular plate, the sixth cam 213 is disposed on one side of the outer peripheral wall of the fourth cylinder 2111 close to the fifth cylinder 2112, and the sixth cam 213 extends along the outer peripheral wall far from the fourth cylinder 2111 and is disposed at an angle with respect to the outer Zhou Bicheng of the fourth cylinder 2111. The sixth cam 213 includes a fifth side 2131 and a sixth side 2132 which are opposite to each other in the Z direction, and a seventh side 2133 and an eighth side 2134 which are opposite to each other in the Y direction, the seventh side 2133 and the eighth side 2134 being connected between the fifth side 2131 and the sixth side 2132. The sixth cam 213 is further provided with a third three-way groove 2135 and a fourth three-way groove 2136, the third three-way groove 2135 is located on one side of the fifth side surface 2131 facing the sixth side surface 2132, the third three-way groove 2135 extends in the Y direction and penetrates through the seventh side surface 2133 and the eighth side surface 2134 of the sixth cam 213; the fourth groove 2136 is located on the side of the sixth side 2132 facing the fifth side 2131, and the fourth groove 2136 extends in the Y direction and penetrates the seventh side 2133 and the eighth side 2134 of the sixth cam 213.

The seventh cam 214 is in a rectangular disk shape as a whole, and the seventh cam 214 is provided to protrude from the outer peripheral wall of the fifth cylinder 2112 on the side away from the fourth cylinder 2111. The seventh cam 214 extends along the peripheral wall away from the fifth cylinder 2112 and is disposed at an angle to the outer Zhou Bicheng of the fifth cylinder 2112. In the X direction, the vertical distance between the sixth cam 213 and the seventh cam 214 is greater than the vertical distance between the fifth cam 212 and the sixth cam 213.

The eighth flange 215 is convexly disposed on the outer peripheral wall of the fifth cylinder 2112, the eighth flange 215 is disposed on one side of the seventh flange 214 away from the sixth flange 213, and the eighth flange 215 extends along the outer peripheral wall away from the fifth cylinder 2112 and forms an included angle with the outer Zhou Bicheng of the fifth cylinder 2112. The vertical distance between the seventh cam 214 and the eighth cam 215 is smaller than the vertical distance between the sixth cam 213 and the seventh cam 214 in the X direction.

It is understood that the seventh cam 214 and the eighth cam 215 may have a rectangular disk shape as a whole, or may have a circular disk shape, or may have other polygonal disk shapes.

The rib 216 is convexly disposed on a side of the outer peripheral wall of the fourth cylinder 2111 near the second opening 2121, the rib 216 includes a first sub-rib 2161 and a second sub-rib 2162, and the first sub-rib 2161 and the second sub-rib 2162 are disposed on two sides of the second opening 2121 along the Y direction, that is, the second opening 2121 communicates with a gap between the first sub-rib 2161 and the second sub-rib 2162. One side of the first sub-rib 2161 is connected with the fifth cam 212, and the other side is connected with the sixth cam 213; one side of the second sub bead 2162 is connected to the fifth cam 212, and the other side is connected to the sixth cam 213.

Referring to fig. 2 and 3 in combination, the second movable core 22 includes a second movable core body 221, and the second movable core body 221 is entirely cylindrical. Along the X direction, second plunger body 221 includes a third end surface 2211 and a fourth end surface 2212 disposed opposite to each other. Third and fourth mounting grooves 2211a and 2212a are further formed in second plunger body 221. The third mounting groove 2211a is concavely formed on the third end surface 2211 of the second movable core 22, and the fourth mounting groove 2212a is concavely formed on the fourth end surface 2212 of the second movable core 22. The third and fourth mounting grooves 2211a and 2212a are used for assembling a gasket. It is understood that the shape of the third and fourth mounting grooves 2211a and 2212a may be determined according to the shape of the gasket.

Referring to fig. 2, 3 and 7 to 9, the second plunger 22 is inserted into the fifth cavity 2112a of the second body 211, and a gap is formed between the second plunger 22 and the fifth cavity 2112a in a radial direction of the fifth cavity 2112a, that is, a second sub-channel 2115 is formed between the second plunger 22 and the second installation cavity E.

The second sub solenoid valve 20 further includes a second coil 23, a second coil leg 24, a third gasket 25, a fourth gasket 26, and a second return spring 27. The second coil 23 is sleeved outside the fifth column 2112, specifically, between the sixth cam 213 and the seventh cam 214. The number of the second coil fillets 24 is two, the two second coil fillets 24 are respectively arranged in the third through groove 2135 and the fourth through groove 2136 of the sixth convex disc 213 in a penetrating mode, one end of one second coil fillet 24 is connected with a positive power supply, the other end of the other second coil fillet 24 is connected with a negative power supply, the other end of the other second coil fillet 24 is connected with the second coil 23, and current is provided for the second coil 23 through the second coil fillets 24. The third gasket 25 and the fourth gasket 26 are provided at opposite ends of the second plunger 22. Specifically, the third gasket 25 is mounted to the third mounting groove 2211a of the second plunger body 221, and the fourth gasket 26 is mounted to the fourth mounting groove 2212a of the second plunger body 221. Second return spring 27 is sleeved on an end of second plunger body 221 away from sixth cylinder 2113.

Referring to fig. 2, 3 and 10, the first magnetic conductive plate 31 includes a first magnetic conductive plate body 311, a first clamping portion 312 and a second clamping portion 313. The first magnetic conductive plate body 311 is integrally shaped as a strip plate. Along the Z direction, the first magnetic conductive plate body 311 includes an inner side surface and an outer side surface that are disposed back to each other. The first clamping portion 312 and the second clamping portion 313 are respectively and convexly arranged at two opposite ends of the inner side surface of the first magnetic conductive plate body 311, and the first clamping portion 312 and the second clamping portion 313 are oppositely arranged along the X direction. The first clamping portion 312 and the second clamping portion 313 extend along an inner side surface far away from the first magnetic conductive plate body 311 and form an included angle with the inner side surface.

The first clamping portion 312 includes a first clamping portion body 3121. The first clamping portion body 3121 is substantially plate-shaped, and along the X-direction, the first clamping portion body 3121 includes an outer surface and an inner surface disposed opposite thereto. The first clamping portion 312 further includes a first clamping groove 3122. The first clamping groove 3122 is disposed on a side of the first clamping portion body 3121 away from the first magnetic guiding plate body 311 and penetrates through the outer surface and the inner surface of the first clamping portion body 3121 in the X direction. In the Y direction, the width dimension of the first clamping groove 3122 is smaller than the width dimension of the first clamping portion body 3121.

The second clamping portion 313 includes a second clamping portion body 3131. The second clamping portion body 3131 is substantially plate-shaped, and along the X direction, the second clamping portion body 3131 includes an outer surface and an inner surface disposed opposite to each other. The second clamping portion 313 further includes a second clamping groove 3132. The second clamping groove 3132 is formed in one side of the second clamping portion body 3131 away from the first magnetic conductive plate body 311, and penetrates through the outer surface and the inner surface of the second clamping portion body 3131 in the X direction. The second card slot 3132 includes a first sub-card slot 3132a, a second sub-card slot 3132b, and a third sub-card slot 3132c, the first sub-card slot 3132a is substantially rectangular, the second sub-card slot 3132b is fan-shaped, the third sub-card slot 3132c is rectangular, and the first sub-card slot 3132a, the second sub-card slot 3132b, and the third sub-card slot 3132c are in communication with each other. Along the Y direction, the width dimension of the first sub-clamping groove 3132a is greater than or equal to the width dimension of the second rib H on the second valve body holder 21, less than the vertical distance from one end to the other end of the second sub-clamping groove 3132b (the width dimension of the second sub-clamping groove 3132 b), the width dimension of the second sub-clamping groove 3132b is equal to the width dimension of the third sub-clamping groove 3132c, and the width dimension of the third sub-clamping groove 3132c is less than the width dimension of the second clamping portion body 3131. The second engaging portion 313 further includes a first protrusion 3133 and a second protrusion 3134. The first protrusion 3133 and the second protrusion 3134 are respectively protruded on two opposite sidewalls of the second sub-card slot 3132b along the Y direction, the shape of the first protrusion 3133 is matched with the shape of the third notch F, and the shape of the second protrusion 3134 is matched with the shape of the fourth notch G.

With continued reference to fig. 2, 3 and 11, the second magnetic conductive plate 32 includes a second magnetic conductive plate body 321, a third clamping portion 322 and a fourth clamping portion 323. The second magnetic conductive plate body 321 is overall in a shape of a long strip plate. Along the Z direction, the second magnetic conductive plate body 321 comprises an inner side surface and an outer side surface which are arranged back to back. The third clamping portion 322 and the fourth clamping portion 323 are respectively and convexly arranged on two opposite sides of the inner side surface of the second magnetic conduction plate body 321, and the third clamping portion 322 and the fourth clamping portion 323 are oppositely arranged along the X direction. The third clamping portion 322 and the fourth clamping portion 323 extend along the inner side surface far away from the second magnetic conductive plate body 321 and are arranged at an included angle with the inner side surface.

The third clamping portion 322 includes a third clamping portion body 3221. The third clamping portion body 3221 is substantially plate-shaped, and along the X direction, the third clamping portion body 3221 includes an outer surface and an inner surface disposed opposite to each other. The third clamping portion 322 further includes a third clamping groove 3222. Along the X direction, the third clamping groove 3222 penetrates through the outer surface and the inner surface of the third clamping portion body 3221. The third card slot 3222 includes a fourth sub card slot 3222a, a fifth sub card slot 3222b, and a sixth sub card slot 3222c, the fourth sub card slot 3222a is substantially rectangular, the fifth sub card slot 3222b is fan-shaped, the sixth sub card slot 3222c is rectangular, and the fourth sub card slot 3222a, the fifth sub card slot 3222b, and the sixth sub card slot 3222c are in communication with each other. In the Y direction, the width dimension of the fourth sub-groove 3222a is equal to or greater than the width dimension of the first rib D of the first valve body holder 11, and is smaller than the vertical distance from one end to the other end of the fifth sub-groove 3222b (the width dimension of the fifth sub-groove 3222 b), and the width dimension of the fifth sub-groove 3222b is equal to the width dimension of the sixth sub-groove 3222 c. The third clamping portion body 3221 further includes a third protrusion 3223 and a fourth protrusion 3224. The third protrusion 3223 and the fourth protrusion 3224 are respectively protruded on two opposite sidewalls of the fifth sub-card slot 3222B along the Y direction, the shape of the third protrusion 3223 is matched with the shape of the first notch B, and the shape of the fourth protrusion 3224 and the shape of the second notch C are matched.

The fourth clamping portion 323 includes a fourth clamping portion body 3231. The fourth clamping portion body 3231 is substantially plate-shaped, and along the X-direction, the fourth clamping portion body 3231 includes an outer surface and an inner surface disposed opposite thereto. The fourth engaging portion 323 further includes a fourth engaging groove 3232. The fourth clamping groove 3232 is disposed on a side of the fourth clamping portion body 3231 away from the second magnetic conductive plate body 321, and penetrates through an outer surface and an inner surface of the fourth clamping portion body 3231 in the X direction. In the Y direction, the width dimension of the fourth clamping groove 3232 is smaller than the width dimension of the fourth clamping portion body 3231.

Referring to fig. 2, 3 and 12-14, the air duct 40 includes an air duct body 41, and the air duct body 41 is a cylinder. The air passage body 41 is provided with a first air passage 42, a second air passage 43, a first concave part 44, a second concave part 45 and a fool-proof notch 46. Along the X direction, the air duct body 41 includes a first side wall 411, a second side wall 412, and an outer peripheral wall 413 connecting the first side wall 411 and the second side wall 412, which are disposed opposite to each other. The first air passage 42 and the second air passage 43 penetrate through the air passage body 41, and the first concave portion 44 and the second concave portion 45 are concavely provided on the outer peripheral wall of the air passage body 41. The fool-proof notch 46 is provided at one end of the airway body 41.

The first air duct 42 penetrates the first side wall 411 and the second side wall 412 of the air duct body 41, and extends along the X direction. In the Z direction, the first air passage 42 is located above the central axis O of the air passage body 41. The first air passage 42 includes a first air port 421 through the first sidewall 411 and a second air port 422 through the second sidewall 412.

The second air passage 43 includes a first passage 43a and a second passage 43b. Along the Z direction, the second air passage 43 is located below the central axis O of the air passage body 41. Along the X direction, one end of the first channel 43a penetrates through the first sidewall 411 of the air channel body 41, the other end extends to the inside of the air channel body 41 in a direction away from the first sidewall 411, and the first channel 43a is disposed at an angle with the first sidewall 411 of the air channel body 41. One end of the second channel 43b penetrates through the outer peripheral wall of the air channel body 41, the other end extends towards the inside of the air channel body 41 and is communicated with the first channel 43a, the second channel 43b and the outer peripheral wall of the air channel body 41 are arranged at an included angle, and the second air channel 43 is an L-shaped channel as a whole. The second air duct 43 includes a third air port 431 through the first side wall 411 and a fourth air port 432 through the outer peripheral wall 413. The line connecting the center point M of the first air port 421 and the center point N of the third air port 431 is located on the diameter of the first sidewall 411 of the air channel body 41 along the Z direction.

The first recess 44 and the second recess 45 are concavely provided on the outer peripheral wall of the air passage body 41, and the first recess 44 and the second recess 45 are respectively located at opposite ends of the air passage body 41 in the X direction. The first recess 44 and the second recess 45 are annular as a whole, and the first recess 44 and the second recess 45 are used for sleeving a sealing ring.

The fool-proof notch 46 is located at the connection between the first side wall 411 and the peripheral wall 413 of the air passage body 41. In the X direction, the fool-proof notch 46 penetrates the first side wall 411 and a part of the peripheral wall 413 of the air passage body 41, and extends in the X direction. The fool-proof notch 46 communicates with the first recess 44. It will be appreciated that in other embodiments, the fool-proof indentation 46 may not be in communication with the first recess 44.

Referring to fig. 6, 9 and 15 in combination, the solenoid valve 100 further includes a sealing ring 50 and a noise damping cotton 60. The seal ring 50 includes a first seal ring 51, a second seal ring 52, and a third seal ring 53. In the assembled state, the first sub solenoid valve 10 and the second sub solenoid valve 20 are fixedly connected in the X direction. The third cavity 1113a of the first valve body holder 11 and the fourth cavity 2111a of the second valve body holder 21 are butted to form a connection cavity. The first opening 1151 of the first valve body holder 11 is abutted with the second opening 2121 of the second valve body holder 21 to form a ventilation port which communicates with the first installation cavity a and the second installation cavity E and penetrates through the wall of the connection cavity. The second bump 1152 of the first valve body holder 11 is engaged in the third opening 2122 of the second valve body holder 21. A silencing part is formed between the fourth cam 115 of the first valve body holder 11, the sixth cam 213 of the second valve body holder 21, and the second magnetic conductive plate body 321, and the silencing part is connected to the first opening 1151 and the second opening 2121, that is, the silencing part is connected to the ventilation opening formed by the first opening 1151 and the second opening 2121, and the ventilation opening communicates with the silencing part and the fourth air port 432. The silencing part is provided with silencing cotton 60. In this embodiment, the noise damping cotton 60 is clamped between the fourth cam 115, the sixth cam 213, the first sub-bead 2161, the second sub-bead 2162 and the second magnetic conductive plate body 321. It is understood that the first sub-bead 2161 and the second sub-bead 2162 may be omitted.

The first magnetic conductive plate 31 is covered over the first coil 13. The first engaging portion 312 of the first magnetic conductive plate 31 engages with the second column 1112 of the first valve body holder 11, and the second engaging portion 313 engages with the fourth column 2111 of the second valve body holder 21. Specifically, the second cylinder 1112 of the first valve body bracket 11 is clamped in the first clamping groove 3122 of the first clamping portion 312, and the first clamping portion 312 is clamped to the second cam 113 of the first valve body bracket 11. The fourth column 2111 of the second valve body bracket 21 is retained in the second retaining groove 3132 of the second retaining portion 313, and the second retaining portion 313 is retained in the fifth cam 212 of the second valve body bracket 21. The first sub-clamping groove 3132a of the second clamping portion 313 is clamped with the second rib H of the second valve body bracket 21, and the first protruding strip 3133 and the second protruding strip 3134 of the second clamping portion 313 are respectively arranged in the third notch F and the fourth notch G of the second valve body bracket 21. In the X direction, the first clamping portion 312 is aligned with the first end surface 1211 of the first movable iron core 12, so that magnetic lines of force generated at the end of the first movable iron core 12 are perpendicular to the sliding axis of the first movable iron core 12, so that the first movable iron core 12 is ensured to be in a suspended state at the moment of starting, and the response speed and sliding stability of the first movable iron core 12 are improved.

The second magnetic conductive plate body 321 of the second magnetic conductive plate 32 is covered under the second coil 23. The third engaging portion 322 of the second magnetic conductive plate 32 engages with the third column 1113 of the first valve body holder 11, and the fourth engaging portion 323 engages with the fifth column 2112 of the second valve body holder 21. Specifically, the third column 1113 of the first valve body bracket 11 is clamped in the third clamping groove 3222 of the third clamping portion 322, and the third clamping portion 322 is clamped to the fourth cam 115 of the first valve body bracket 11. The fifth column 2112 of the second valve body holder 21 is retained in the fourth retaining groove 3232 of the fourth retaining portion 323, and the fourth retaining portion 323 is retained in the seventh cam 214 of the second valve body holder 21. The fourth sub-clamping groove 3222a of the third clamping portion 322 is clamped with the first rib D of the first valve body bracket 11, and the third raised strip 3223 and the fourth raised strip 3224 of the third clamping portion 322 are respectively arranged at the first notch B and the second notch C of the first valve body bracket 11. In the X direction, the fourth engaging portion 323 is aligned with the fourth end surface 2212 of the second movable iron core 22, so that magnetic lines of force generated at the end portion of the second movable iron core 22 are perpendicular to the sliding axis of the second movable iron core 22, and it is ensured that the second movable iron core 22 is in a suspended state at the moment of starting, and the response speed and sliding stability of the second movable iron core 22 are improved.

The first solenoid valve 10 and the second solenoid valve 20 are fixedly connected by respectively locking the first valve body bracket 11 and the second valve body bracket 21 in a dislocation manner from two directions opposite to each other along the Z axis by the first solenoid valve 31 and the second solenoid valve 32. The first sealing ring 51 is sleeved outside the first cylinder 1111 and is attached to the end surface of the first cam 112 close to the first cylinder 1111, so as to improve the air tightness of the solenoid valve 100.

The air passage body 40 is accommodated in the third cavity 1113a of the first body 111 and the fourth cavity 2111a of the second body 211, that is, the air passage body 40 is accommodated in a connecting cavity formed by butt joint of the third cavity 1113a and the fourth cavity 2111 a. Along the X direction, one end of the air channel 40 abuts against a side wall of the third cavity 1113a facing away from the second cavity 1112a, and the other end abuts against a side wall of the fourth cavity 2111a facing away from the fifth cavity 2112 a. The first sidewall 411 of the air duct body 40 is located in the first installation cavity a, and the second sidewall 412 is located in the second installation cavity E. The fourth port 432 of the second air channel 43 of the air channel body 40 is opposite to the ventilation port formed by the abutting of the first opening 1151 and the second opening 2121. The fool-proof notch 46 of the air passage body 40 abuts against the first bump 1114 to prevent the air passage body 40 from rotating in the first installation cavity a, so that the fourth air port 432 of the second air passage 43 is dislocated from the air vent. The air passage body 40 is located between the first moving core 12 and the second moving core 22. One end of the first return spring 17 is sleeved on the first movable iron core 12, and the other end of the first return spring is abutted against the first side wall 411 of the air passage body 40. One end of the second return spring 27 is sleeved on the second movable iron core 22, and the other end of the second return spring is abutted against the second side wall 412 of the air passage body 40. The first concave portion 44 and the second concave portion 45 of the air passage body 40 are sleeved with a second sealing ring 52 and a third sealing ring 53, which are used for improving the tightness of the air passage body 40. In this embodiment, the air passage body 40 is also a stationary core. The first protrusion 3133 and the second protrusion 3134 of the second engagement portion 313 of the first magnetic conductive plate 31 radially contact the outer peripheral wall 413 of the partial air duct body 40 through the third notch F and the fourth notch G of the second body 211, and the third protrusion 3223 and the fourth protrusion 3224 of the third engagement portion 322 of the second magnetic conductive plate 32 contact the outer peripheral wall 413 of the partial air duct body 40 through the first notch B and the second notch C of the first body 111. Since the first magnetic conductive plate 31 can lock the magnetic lines of force of the first coil 13 and the second magnetic conductive plate 32 can lock the magnetic lines of force of the second coil 23, the first magnetic conductive plate 31 and the second magnetic conductive plate 32 can improve the magnetism of the air passage body 40. Because the air passage body 40 serves as the static iron core at the same time, the integration of the static iron core and the air passage is realized, and the static iron core is not required to be additionally arranged in the electromagnetic valve 100, thereby realizing the miniaturization of the electromagnetic valve 100.

The solenoid valve 100 includes an inflation channel and a deflation channel that extend through the first mounting cavity a and the second mounting cavity E. The first air passage 42 of the air passage body 40 is a partial inflation passage, the second air passage 43 is a partial deflation passage, and in the deflated state, the first air passage 42 and the second air passage 43 serve as partial deflation passages. The inflation channel further includes a first sub-channel 1115 and a second sub-channel 2115, the first air channel 42 of the air channel body 40 is connected between the first sub-channel 1115 and the second sub-channel 2115, and the deflation channel further includes the second sub-channel 2115, the first air channel 42, the second air channel 43, and a gap between the first gasket 15 and the first side wall 411 of the air channel body 40.

With continued reference to fig. 2, 3 and 15, the solenoid valve 100 is in a pressure maintaining condition. The first coil 13 is not electrified, the first movable iron core 12 does not move, and the first movable iron core 12 is abutted against the side wall of the second cavity 1112a of the first body 111, which is opposite to the first cavity 1111a, through the second sealing gasket 16, so that the gas in the air pump cannot enter the second cavity 1112a, and then reaches the air bag through the air channel 40. The second coil 23 is not energized, the second plunger 22 does not move, and the second plunger 22 abuts against the side wall of the fifth cavity 2112a of the second body 211 facing away from the sixth cavity 2113a through the fourth gasket 26, so that the gas in the air bag cannot enter the fifth cavity 2112a, and is discharged out of the solenoid valve 100 through the air passage 40. Thus, at this time, the gas pressure in the bladder remains unchanged.

Referring to fig. 2, 3 and 16, the solenoid valve 100 is in an inflated condition, and the gas flows in the direction indicated by the arrows in the figure, and the gas enters the air bag through the inflation channel formed by the first sub-channel 1115, the first air channel 42 and the second sub-channel 2115. Specifically, when the first coil 13 is energized, the first movable iron core 12 moves rightward, the first gasket 15 on the first movable iron core 12 abuts against the first side wall 411 of the air channel body 40 to seal the third air port 431, the second gasket 16 forms a gap with the side wall of the second cavity 1112a of the first body 111 opposite to the first cavity 1111a, and at this time, the air in the air pump can enter the first sub-channel 1115 of the second cavity 1112a from the first cavity 1111a of the first valve body bracket 11, and further reach the second sub-channel 2115 of the fifth cavity 2112a through the first air channel 42 of the air channel body 40. At the same time, the second coil 23 is energized, the second plunger 22 moves leftward, and the fourth gasket 26 of the second plunger 22 makes a gap with the side wall of the fifth cavity 2112a of the second body 211 facing away from the sixth cavity 2113a, so that gas can enter the sixth cavity 2113a from the fifth cavity 2112a and enter the airbag through the sixth cavity 2113 a. Thus, the airbag can be inflated.

Referring to fig. 2, 3 and 17, the solenoid valve 100 is in a venting condition, and the gas flows in the direction indicated by the arrows in the figure, and is discharged out of the solenoid valve through the venting channel formed by the second sub-channel 2115, the first air channel 42, the gap between the first gasket 15 and the first sidewall 411 of the air channel body 40, and the second air channel 43. Specifically, the first coil 13 is not energized, the first movable iron core 12 does not move, the first movable iron core 12 is abutted against the side wall of the second cavity 1112a of the first body 111 opposite to the first cavity 1111a through the second sealing gasket 16, so that the gas in the air pump cannot enter the first sub-channel 1115 of the second cavity 1112a, meanwhile, the first sealing gasket 15 is far away from the third air port 431, and a gap is formed between the first sealing gasket 15 and the third air port 431. The second coil 23 is energized, the second plunger 22 moves leftward, and the fourth gasket 26 of the second plunger 22 is spaced apart from the side wall of the fifth cavity 2112a of the second body 211 facing away from the sixth cavity 2113 a. The gas in the airbag may enter the first gas passage 42 through the second sub-passage 2115 in the fifth chamber 2112a of the second body 211, and enter the second gas passage 43 from the gap between the first gasket 15 and the first sidewall 411 of the gas passage body 40, and then exit the solenoid valve 100 through the second gas passage 43. Thus, the airbag can be deflated.

The principles and embodiments of the present utility model have been described with specific examples, which are provided to facilitate understanding of the method of the present utility model and its core ideas; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.

Claims (14)

1. The electromagnetic valve is characterized by comprising a first sub electromagnetic valve, a second sub electromagnetic valve and an air passage body, wherein the first sub electromagnetic valve comprises a first mounting cavity, the second sub electromagnetic valve comprises a second mounting cavity, and the electromagnetic valve further comprises an air ventilation port communicated with the first mounting cavity and the second mounting cavity;

along solenoid valve length direction, the air flue body includes relative first lateral wall and the second lateral wall that sets up and connects first lateral wall with the periphery wall of second lateral wall, be equipped with first air flue on the air flue body and with the second air flue that first air flue interval set up, first air flue runs through first lateral wall and second lateral wall, first air flue includes the first gas port that runs through first lateral wall and runs through the second gas port of second lateral wall, the second air flue runs through first lateral wall and periphery wall, the second air flue includes the third gas port that runs through first lateral wall and runs through the fourth gas port of periphery wall;

Along the length direction of the electromagnetic valve, the first sub electromagnetic valve is fixedly connected with the second sub electromagnetic valve, the air passage body penetrates through the first mounting cavity and the second mounting cavity, the first side wall of the air passage body is positioned in the first mounting cavity, the second side wall of the air passage body is positioned in the second mounting cavity, and the fourth air port is in butt joint and communication with the air ventilation port;

the electromagnetic valve further comprises an inflation channel and a deflation channel, the inflation channel and the deflation channel penetrate through the first installation cavity and the second installation cavity, the first air channel is a part of the inflation channel, the second air channel is a part of the deflation channel, and in a deflation state, the first air channel and the second air channel are communicated to be used as a part of the deflation channel.

2. The solenoid valve of claim 1 wherein said first mounting chamber has a first gasket disposed therein, said first gasket abutting said first sidewall of said airway body to seal said third port in an inflated condition and being spaced apart from said third port in a deflated condition to permit said first airway to function as part of said bleed passage.

3. The solenoid valve of claim 2 wherein said first mounting cavity and said second mounting cavity communicate to form a connecting cavity, said solenoid valve further comprising a silencer, said air passage body being received in said connecting cavity, said air vent extending through a wall of said connecting cavity, and said air vent communicating said silencer with said fourth air vent.

4. The solenoid valve of claim 3 wherein said first sub-solenoid valve further comprises a first plunger, said second sub-solenoid valve further comprises a second plunger, said first plunger is disposed in said first mounting cavity, said first gasket is disposed at an end of said first plunger, a first sub-passage is formed between said first plunger and said first mounting cavity, said second plunger is disposed in said second mounting cavity, and a second sub-passage is formed between said second plunger and said second mounting cavity;

the inflation channel comprises a first sub-channel and a second sub-channel, and the first air channel is connected between the first sub-channel and the second sub-channel;

the bleed passage includes the second sub-passage, the first air passage, the second air passage, and a gap between the first gasket and a first sidewall of the air passage body.

5. The electromagnetic valve according to claim 1, wherein the air passage body is provided with a fool-proof notch, and the fool-proof notch is positioned at the joint of the first side wall and the peripheral wall of the air passage body;

the first mounting cavity comprises a first lug, the first lug is arranged in the first mounting cavity in a protruding mode, and the first lug abuts against the fool-proof notch.

6. The solenoid valve of claim 4 wherein said first sub-solenoid valve includes a first notch in communication with said first mounting cavity and said second sub-solenoid valve includes a third notch in communication with said second mounting cavity, said solenoid valve further comprising a magnetically permeable plate assembly including a first magnetically permeable plate and a second magnetically permeable plate, said first magnetically permeable plate passing through said third notch in abutment with a portion of a peripheral wall of said airway body located within said second mounting cavity and said second magnetically permeable plate passing through said first notch in abutment with a portion of a peripheral wall of said airway body located within said first mounting cavity.

7. The solenoid valve of claim 6 wherein said first sub-solenoid valve includes a first valve body bracket including a first body including said first mounting cavity and a second boss, said first body including an outer peripheral wall and an inner peripheral wall, said second boss protruding from said first body outer peripheral wall;

The second sub-electromagnetic valve comprises a second valve body bracket, the second valve body bracket comprises a second body and a fifth convex disc, the second body comprises a second mounting cavity, the second body comprises an outer peripheral wall and an inner peripheral wall, and the fifth convex disc is convexly arranged on the outer peripheral wall of the second body;

the first magnetic conduction plate comprises a first clamping part and a second clamping part, wherein the first clamping part is clamped to the second convex disc, and the second clamping part is clamped to the fifth convex disc.

8. The solenoid valve of claim 7 wherein the first valve body bracket further comprises a fourth cam projecting from the peripheral wall of the first body and spaced from the second cam along the length of the solenoid valve;

the second valve body bracket further comprises a seventh convex disc, and the seventh convex disc is convexly arranged on the outer peripheral wall of the second body along the length direction of the electromagnetic valve and is arranged at intervals with the fifth convex disc;

the second magnetic conduction plate comprises a third clamping part and a fourth clamping part, wherein the third clamping part is clamped to the fourth convex disc, and the fourth clamping part is clamped to the seventh convex disc.

9. The solenoid valve of claim 8 wherein said first mounting cavity includes a third cavity, said second mounting cavity includes a fourth cavity, said third cavity is located on said fourth cam side, said fourth cavity is located on said fifth cam side, said third cavity and said fourth cavity interface to form said connecting cavity, said air passage is located within said third cavity and said fourth cavity;

The fourth convex disc comprises a first opening, the fifth convex disc comprises a second opening, the first opening is connected with the third cavity, the second opening is connected with the fourth cavity, and the first opening and the second opening are in butt joint to form the ventilation opening.

10. The electromagnetic valve according to claim 9, wherein the second valve body support further comprises a sixth cam, the sixth cam is arranged on the outer peripheral wall of the second body in a protruding mode and is arranged at intervals from the fifth cam, the silencing portion is formed among the fourth cam, the sixth cam and the second magnetic conduction plate, the silencing portion is connected with the first opening and the second opening, and silencing cotton is installed on the silencing portion.

11. The electromagnetic valve according to claim 8, wherein the second clamping portion comprises a second clamping portion body, a second clamping groove and a first protruding strip, the second clamping groove penetrates through the second clamping portion body along the length direction of the electromagnetic valve, the first protruding strip is protruding on the inner side wall of the second clamping groove, and the shapes of the first protruding strip and the third gap are matched;

the third clamping portion comprises a third clamping portion body, a third clamping groove and a third protruding strip, the third clamping portion body, the third clamping groove and the third protruding strip are located along the length direction of the electromagnetic valve, the third clamping groove penetrates through the third clamping portion body, the third protruding strip is protruding on the inner side wall of the third clamping groove, and the third protruding strip is matched with the first notch in shape.

12. The solenoid valve of claim 8 wherein the first snap-fit portion is aligned with an end of the first plunger remote from the airway body and the fourth snap-fit portion is aligned with an end of the second plunger remote from the airway body along the length of the solenoid valve.

13. The solenoid valve of claim 7 wherein the first sub-solenoid valve further comprises a first coil and a first return spring, the first coil being sleeved outside the first body, the first return spring being sleeved on a side of the first plunger adjacent the air passage body; the second sub-solenoid valve further comprises a second coil and a second reset spring, the second coil is sleeved outside the second body, and the second reset spring is sleeved on one side, close to the air channel body, of the second movable iron core.

14. A car seat, characterized in that the car seat is provided with a solenoid valve according to any one of claims 1-13, through which the lumbar support airbag and/or the side wing airbag of the car seat is inflated or deflated.

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