Transmission terminal, electric control valve, air spring, damping assembly and vehicle

Abstract

The utility model relates to a transmission terminal, an electric control valve, an air spring, a damping assembly and a vehicle, the transmission terminal is fixed to a valve body of the electric control valve, the transmission terminal comprises a sleeve and a body, the body is fixed to one end of the sleeve, the valve body is sleeved with the sleeve, an inner cavity of the sleeve is further used for containing an iron core, and the outer wall of the sleeve is used for winding a coil; and the coil controls the iron core to slide in the sleeve by switching on and off and drives the valve core to shield or open the valve port of the valve body. The main body in the transmission terminal and the sleeve for winding the coil are integrally formed, so that reliable work of the transmission terminal in a load environment is ensured, the service life of the transmission terminal is prolonged, meanwhile, the processing procedures of the transmission terminal are reduced, and the production efficiency of the transmission terminal is improved.

Description

Technical Field

[0001] The present application relates to the field of transmission terminals, and in particular to a transmission terminal, an electric control valve, an air spring, a shock absorbing assembly and a vehicle. Background Art

[0002] The electric control valve controls the opening and closing of the valve through the transmission terminal to connect or separate the closed cavity. In a closed cavity such as an air spring, the airbag includes a main air chamber and a secondary air chamber. The electric control valve is set between the main air chamber and the secondary air chamber to control the stiffness of the air spring.

[0003] Since the air spring is a shock absorbing element, it needs to bear the load for a long time, which can easily cause the transmission terminal to fail and affect the normal operation of the air spring. Utility Model Content

[0004] In view of the above-mentioned technical problems, the purpose of the present application is to provide a transmission terminal with reliable connection, an electrically controlled valve including the transmission terminal, an air spring including the electrically controlled valve, a shock absorbing assembly including the air spring, and a vehicle including the shock absorbing assembly or the air spring. The specific technical solutions include the following:

[0005] In the first aspect, an embodiment of the present application provides a transmission terminal, which is fixed to the valve body of an electric control valve. The transmission terminal includes: a sleeve and a main body, the main body is fixed to one end of the sleeve, the sleeve is sleeved outside the valve body, the inner cavity of the sleeve is also used to accommodate an iron core, and the outer wall of the sleeve is used to wind a coil. The coil controls the iron core to pass through the valve body and slide in the sleeve by on-off power, and drives the valve core to cover or open the valve port of the valve body.

[0006] The outer wall of the sleeve of the transmission terminal of the present application is provided with a coil, and an iron core is provided inside the sleeve. When the coil is energized, a magnetic field is generated to drive the iron core to slide. The on-off coil controls the iron core to drive the valve core to cover or open the valve port to realize the on-off of the electric control valve.

[0007] The main body of the transmission terminal of the present application is integrally formed with the sleeve around which the coil is wound, which improves the connection reliability between the main body and the coil, ensures that the transmission terminal can operate reliably under load conditions and extends its service life, while reducing the processing steps of the transmission terminal and improving the production efficiency of the transmission terminal.

[0008] In one embodiment, the main body includes a pin, which is located on a side of the coil away from the valve body, one end of the pin is connected to the coil, and the other end extends in a direction away from the coil.

[0009] In this embodiment, the main body of the transmission terminal includes a pin as an electrical transmission member, one end of the pin is connected to the coil, and the other end is connected to the power supply, so that the coil is conductive to the power supply to realize the energization of the coil.

[0010] In one embodiment, the sleeve includes a positioning groove, which is recessed in the outer wall of the sleeve, and is used to fix the coil end connected to the pin.

[0011] In this embodiment, the end of the coil passes through the positioning groove through the sleeve and is connected to the pin at one end of the side wall of the main body. The positioning groove can accommodate and protect the end of the coil, prevent the end of the coil from being worn against other parts, and avoid affecting the conduction of the coil.

[0012] In one embodiment, the insertion pin includes a bending portion, which is bent toward the center of the main body, and the insertion pin portion is accommodated inside the main body.

[0013] In this embodiment, the plug pin is provided with a bending portion, which is bent toward the center of the main body, so that the plug pin is partially accommodated inside the main body, thereby achieving the effect of protecting the plug pin by the main body.

[0014] In one embodiment, a coil groove is recessed in the outer wall of the sleeve, and the coil groove is used to fix and at least partially accommodate the coil.

[0015] In this embodiment, the coil is wound in the coil groove on the outer wall of the sleeve, which can accommodate and restrict the coil to prevent the coil from moving along the sleeve axis toward the two ends of the sleeve, causing the coil to fall off, and prevent the coil from wearing out with other parts, thereby avoiding affecting the conduction of the coil.

[0016] In one embodiment, the coil slot includes a spiral pattern, and the hand direction and the lead angle of the spiral pattern are the same as the hand direction and the lead angle of the coil.

[0017] In this embodiment, the coil can be wound along the spiral pattern, so that the coil fits the coil slot better. At the same time, when the coil is wound in the coil slot, the spiral pattern can guide the winding direction of the coil, so that each coil is parallel to each other and the magnetic field generated is in the same direction, thereby increasing the magnetic field generated by the coil.

[0018] In one embodiment, the transmission terminal includes a magnetic ring, which is partially embedded in the outer wall of the transmission terminal. The magnetic ring is arranged side by side with the coil and is located on the side of the coil facing the main body. The magnetic ring is used to increase the magnetic field generated by the coil.

[0019] In this embodiment, a magnetic ring is provided on one side of the coil. When energized, the coil generates a magnetic field, which passes through the magnetic ring. The magnetic ring can concentrate and enhance the magnetic field generated by the coil, making the magnetic field more concentrated and evenly distributed, which is beneficial for the movement of the iron core driven by the magnetic field.

[0020] In one embodiment, the iron core includes a spring, which is embedded in the iron core, one end of the spring abuts against the iron core, and the other end of the spring abuts against the valve body, and the spring is used to drive the iron core to reset.

[0021] In this embodiment, a spring is arranged between the iron core and the valve body. When the iron core moves toward the valve port under the action of the magnetic field, the spring is compressed; when the coil is powered off, the compressed spring recovers and drives the iron core back to its initial position.

[0022] In one embodiment, the valve port of the valve body is located at an end of the valve body away from the main body, and the side wall of the valve body is also provided with an opening connected to the valve port. The valve core is used to cover or open the valve port at the end of the valve body.

[0023] In this embodiment, the valve port and the opening are respectively located at the end and the side wall of the valve body, and the valve core moves in the inner cavity of the valve body. When the valve core moves to the end, the valve port at the end is completely covered, so that the valve port is separated from the opening, thereby realizing the on and off of the electric control valve.

[0024] In the second aspect, an embodiment of the present application also provides an electrically controlled valve, which includes a valve body, a valve core, an iron core, a coil and the above-mentioned transmission terminal, wherein the sleeve of the transmission terminal is arranged outside the valve body, the valve core is arranged inside the valve body, the coil is wound around the outer wall of the sleeve, and the iron core is arranged in the inner cavity of the sleeve.

[0025] On the third aspect, an embodiment of the present application also provides an air spring, which includes an airbag, an electric control valve and the above-mentioned transmission terminal. The airbag includes a main air chamber and an auxiliary air chamber. The transmission terminal and the electric control valve are arranged between the main air chamber and the auxiliary air chamber, and are used to separate or connect the main air chamber and the auxiliary air chamber in the air spring, thereby realizing the adjustment of the stiffness of the air spring.

[0026] In a fourth aspect, an embodiment of the present application further provides a shock absorbing assembly, comprising the above-mentioned air spring.

[0027] In a fifth aspect, an embodiment of the present application also provides a vehicle, comprising the above-mentioned shock absorbing assembly or air spring.

[0028] The electronically controlled valve, air spring, shock absorbing assembly and vehicle of the present application can improve the reliability of internal components and have a longer service life because the above-mentioned transmission terminals are adopted, while reducing the processing steps and having higher production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the internal cross-section of an electrically controlled valve provided in one embodiment of the present application;

[0030] Figure 2 This is a partial structural diagram of an electric control valve provided in one embodiment of the present application;

[0031] Figure 3 A schematic diagram of a partial structure of an electric control valve provided in another embodiment of the present application;

[0032] Figure 4This is a schematic diagram of the structure of a transmission terminal portion provided in an embodiment of the present application;

[0033] Figure 5 This is a schematic diagram of the structure of a magnetic conductive ring provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0035] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] The present application relates to a vehicle, which includes a shock-absorbing assembly or an air spring, and the shock-absorbing assembly also includes an air spring, and the air spring includes an airbag and an electrically controlled valve. There is gas in the airbag, and the elastic effect of the air spring is achieved by utilizing the compressibility of the gas. The airbag includes a main air chamber and a secondary air chamber, and the main air chamber is mainly used to bear external loads and compress the internal gas. The secondary air chamber is used to adjust the stiffness of the air spring, and the electrically controlled valve is arranged between the main air chamber and the secondary air chamber. When the main air chamber is connected to the secondary air chamber, the volume in the main air chamber increases, and the internal gas is more easily compressed, so that the stiffness of the air spring is reduced.

[0038] The transmission terminal of the present application is sleeved on the outside of the electric control valve, and the valve core is driven to slide by the on-off control iron core to cover or open the valve port of the valve body, thereby realizing the closing or opening of the electric control valve.

[0039] See also Figure 1 A schematic diagram of the internal cross-section of an electrically controlled valve 100 provided in one embodiment of the present application is shown.

[0040] The electric control valve 100 provided in the present application includes a valve body 10, a transmission terminal 20, a valve core 30, a coil 40 and an iron core 50. The transmission terminal 20 includes a main body 22 and a sleeve 21, the main body 22 is in an axisymmetric columnar shape, the main body 22 is located at one end of the sleeve 21, the sleeve 21 is sleeved outside the valve body 10, and the outer wall of the sleeve 21 is used to wind the coil 40, and the coil 40 is connected to the power supply.

[0041] Specifically, in one embodiment, the main body 22 includes a pin 221 and a power slot 222. The power slot 222 is recessed in the end surface of the main body 22 away from the valve body 10, and is used to connect the power supply. Two pins 221 are arranged in the power slot 222, and the two pins 221 are spaced apart from each other. When the power supply is inserted into the power slot, the two pins 221 are respectively connected to the positive and negative poles of the power supply. The two ends of the wire of the coil 40 are respectively fixedly connected to the two pins 221, so that the power supply is connected to the coil 40 through the two pins 221 and a loop is formed.

[0042] The inner cavity of the sleeve 21 is used to accommodate the iron core 50. The iron core 50 is located on the side of the valve body 10 facing the main body 22, and the valve core 30 is located on the side of the valve body 10 away from the main body 22. Specifically, in one embodiment, the iron core 50 includes a connecting rod 51, one end of the connecting rod 51 passes through the iron core 50 and is fixedly connected to the iron core 50, and the other end passes through the through hole 13 on the valve body 10 and is fixedly connected to the valve core 30.

[0043] When the power is turned on, the current passes through the coil 40 and forms a magnetic field, which can magnetize the iron core 50. The magnetized iron core 50 moves under the action of the magnetic field. By controlling the direction of the current in the coil 40, the movement direction of the iron core 50 in the inner cavity can be controlled. Under the action of the magnetic field, the iron core 50 moves toward the valve port 11, driving the valve core 30 to move. The size of the end face of the valve core 30 is larger than the size of the valve port 11, and the valve core 30 can completely cover the valve port 11, thereby closing the electric control valve 100.

[0044] Specifically, in one embodiment, the valve body 10 includes a valve port 11 and an opening 12, wherein the valve port 11 is located at one end away from the sleeve 21, and the opening 12 is located at the side wall of the valve body 10. The valve core 30 can shield the valve port 11, so that the valve port 11 is separated from the opening 12, thereby closing the electric control valve 100.

[0045] When the power is off, the coil is not energized, and the valve core 30 fails to completely cover the valve port 11. At this time, the valve port 11 and the opening 12 are connected to each other. Therefore, controlling the position of the valve core 30 relative to the valve port 11 can control the on-off of the electric control valve 100, thereby separating or connecting the valve port 11 and the opening 12. The valve port 11 and the opening 12 are respectively connected to two relatively independent air chambers in the airbag, that is, controlling the on-off of the electric control valve 100 can achieve the connection or separation of the two relatively independent air chambers.

[0046] During the operation of the air spring, one of the air chambers needs to bear the load, namely the main air chamber, and the other air chamber is the auxiliary air chamber. When the load gradually increases, the volume of the main air chamber decreases, and the gas inside the main air chamber is compressed. When the load gradually decreases, the volume of the main air chamber increases, and the compression rate of the gas inside the main air chamber decreases. When the electric control valve 100 is closed, the main air chamber is separated from the auxiliary air chamber, the volume of the main air chamber is smaller, and the stiffness of the air spring is larger. When the electric control valve 100 is opened, the main air chamber is connected to the auxiliary air chamber, the volume of the main air chamber is larger, and the gas is more easily compressed, making the stiffness of the air spring smaller.

[0047] It can be understood that controlling the magnitude of the current passing through the coil 40 can control the electromagnetic force on the iron core 50, control the position of the valve core 30 relative to the valve port 11, and thus change the size of the connecting channel between the valve port 11 and the opening 12. By controlling the size of the connecting channel between the main air chamber and the auxiliary air chamber, the pressure difference when the gas flows between the air chambers can be changed, and the stiffness of the air spring can also be changed. At this time, the stiffness of the air spring is between the stiffness of the air spring when the electric control valve 100 is fully opened and the stiffness of the air spring when the electric control valve 100 is closed.

[0048] The outer wall of the sleeve 21 of the electric control valve 100 of the present application is provided with a coil 40, and an iron core 50 is provided inside the sleeve 21. When the coil 40 is energized, a magnetic field is generated to drive the iron core 50 to slide. By turning on and off the coil 40, the iron core 50 drives the valve core 30 to cover or open the valve port 11, so as to realize the on and off of the electric control valve 100.

[0049] The air spring is an elastic element that needs to withstand a variable load during its operation. A long-term variable load can easily cause the connection between the internal components of the air spring to fail. In particular, a connection failure between the main body 22 and the sleeve 21 will cause the coil 40 to be unable to conduct to the power supply, and thus the stiffness of the air spring cannot be adjusted.

[0050] The main body 22 and the sleeve 21 of the transmission terminal 20 of the present application are integrally formed, which can ensure the effective connection between the main body 22 and the sleeve 21, improve the reliability of the components, and extend the service life of the air spring. At the same time, the internal components of the air spring are reduced, the processing steps are reduced, and the production efficiency is improved.

[0051] It should be pointed out that the transmission terminal 20 of the present application can be applied to the above-mentioned electric control valve 100, and can also be applied to other components that require power on and off or magnetic field effects, and the transmission terminal 20 of the present application has higher reliability and service life.

[0052] Meanwhile, the electric control valve 100 of the present application can be applied to the above-mentioned air spring as a component for separating airbags and adjusting the volume of the main air chamber in the airbag. However, the electric control valve 100 is not limited to be used only in air springs. In other sealed systems that need to separate or connect enclosed spaces, the electric control valve 100 of the present application can also be used, and has higher reliability and service life.

[0053] In one embodiment, if Figure 1 As shown, the valve body 10 includes a valve port 11 and an opening 12 , and the valve core 30 can cover the valve port 11 and thus close the electric control valve 100 .

[0054] In another embodiment, the valve body 10 includes a valve port 11 and an opening 12 , and the valve core 30 can cover the opening 12 to close the electric control valve 100 . The valve port covered by the valve core 30 can be arbitrarily set based on the specific structure of the valve body 10 .

[0055] In another embodiment, the opening 12 of the valve body 10 may be located at one end of the valve body 10, and the valve port 11 may be located on the side wall of the valve body 10. The specific positions of the valve port 11 and the opening 12 can be arbitrarily set based on the relative positions of the air chambers that need to be connected.

[0056] In one embodiment, if Figure 1 As shown, the main body 22 includes a pin 221 , which is located on a side of the coil 40 away from the valve body 10 , one end of the pin 221 is connected to the coil 40 , and the other end extends in a direction away from the coil 40 .

[0057] One end of the pin 221 is located on the side wall of the main body 22 and extends in a direction away from the main body 22, for conducting to the end of the coil 40. The other end of the pin 221 extends in a direction away from the coil 40, extends to the end surface of the main body 22 away from the end of the valve body 10, and is located in the power supply slot 222, for conducting to the power supply. The pin 221 and the coil 40 form a loop, so that the coil 40 is connected to the power supply.

[0058] In one embodiment, if Figure 1As shown, the pin 221 includes a bending portion, which is bent toward the center of the main body 22, and the pin 221 is partially accommodated inside the main body 22. The bent pin 221 facilitates the conduction of the power supply and the coil 40. The pin 221 includes a bending portion bent toward the center of the main body 22, so that part of the pin 221 is located inside the main body 22, which can protect the pin 221 and prevent other components from contacting the pin 221 and affecting the conduction of the pin 221. At the same time, the pin 221 has a larger contact area with the main body 22, which improves the reliability of component connection.

[0059] In another embodiment, the end of the pin 221 connected to the power source may be located at other positions of the main body 22. The position of the end of the pin 221 connected to the power source may be set based on the relative position of the power source and the main body 22.

[0060] In one embodiment, if Figure 1 As shown, the power slot 222 is located at the end surface of the main body 22 away from the valve body 10. In another embodiment, the power slot 222 can also be located at other positions of the main body 22, and the position of the power slot 222 can be set based on the relative position of the power source and the main body 22.

[0061] In one embodiment, if Figure 1 As shown, the electric control valve 100 includes a spring 52 , one end of the spring 52 abuts against the iron core 50 , and the other end abuts against the valve body 10 . The spring 52 serves as an elastic connecting member between the valve body 10 and the iron core 50 , and is used to drive the iron core 50 to reset.

[0062] When the iron core 50 drives the valve core 30 toward the valve port 11 under the action of the magnetic field, the distance between the iron core 50 and the valve body 10 gradually decreases, causing the spring 52 to be compressed. When the valve core 30 completely covers the valve port 11, the spring 52 is compressed to the limit position. After the coil 40 is powered off, the iron core 50 is not affected by the magnetic field force, and the spring 52 drives the iron core 50 to move in the direction away from the valve port 11. The spring 52 returns to its initial state and drives the iron core 50 back to its initial position.

[0063] It can be understood that changing the stiffness of the spring 52 can change the stiffness of the air spring. During the movement of the iron core 50 toward the valve port 11, the iron core 50 is acted upon by the electromagnetic force and the spring force provided by the spring 52, and the directions of the electromagnetic force and the spring force are opposite. As the iron core 50 moves, the spring force will gradually increase. When the electromagnetic force and the spring force are of the same magnitude, the iron core 50 is in a balanced state. The valve core 30 moves a certain distance toward the valve port 11, but has not yet completely covered the valve port 11. At this time, the connecting flow channel connecting the valve port 11 and the opening 12 is smaller than the connecting flow channel in the initial state.

[0064] Therefore, changing the stiffness of the spring 52 can change the size of the communicating flow channel, thereby changing the pressure difference when the gas flows between the air chambers, and can also change the stiffness of the air spring.

[0065] In one embodiment, if Figure 1 As shown, the iron core 50 includes a connecting rod 51, one end of the connecting rod 51 is fixedly connected to the iron core 50, and the other end passes through the through hole 13 of the valve body 10 and is fixedly connected to the valve core 30. The connecting rod 51 is used to drive the valve core 30 to follow the iron core 50 to move toward the valve port 11 to cover the valve port 11 and realize the closing of the electric control valve 100.

[0066] See also Figure 2 A schematic diagram of the partial structure of an electrically controlled valve 100 provided in one embodiment of the present application is shown.

[0067] In one embodiment, if Figure 2 As shown, the main body 22 includes two pins 221 , and the two pins 221 are located at one end of the side wall of the transmission terminal 20 and are spaced apart from each other.

[0068] In one embodiment, the end of the wire of the coil 40 is wrapped around one end of the pin 221 located on the side wall of the main body 22, so that the coil 40 and the pin 221 have a larger contact area, which facilitates the conduction between the coil 40 and the pin 221.

[0069] In one embodiment, if Figure 2 As shown, the sleeve 21 includes two positioning grooves 211, which are recessed in the outer wall of the sleeve 21, and the two positioning grooves 211 are respectively used to fix the two ends of the coil 40 connected by the pin 221. The positioning groove 211 is located on the outer wall of the sleeve 21 and is connected to the winding position of the coil 40. The wire end of the coil 40 can pass through the positioning groove 211 from the winding position of the coil 40 and be fixedly connected to the pin 221. The positioning groove 211 can accommodate the wire end of the coil 40 to prevent the wire end of the coil 40 from interfering with other components in the electric control valve 100, thereby affecting the conduction of the coil 40.

[0070] In one embodiment, if Figure 2 As shown, the positioning groove 211 is inclined, and the inclination direction of the positioning groove 211 is parallel to the winding direction of the coil 40, so that the wire end of the coil 40 does not need to be bent during the extension process toward the pin 221, thereby preventing bending from damaging the coil 40 and improving the service life of the coil 40.

[0071] See also Figure 3 A partial structural diagram of an electrically controlled valve 100 provided in another embodiment of the present application is shown.

[0072] In one embodiment, if Figure 3As shown, the two pins 221 are respectively located on opposite sides of the side wall of the body 22, and accordingly, the position of the positioning groove 211 needs to be set based on the position of the pins 221, that is, the two positioning grooves 211 are also located on opposite sides of the side wall of the sleeve 21. In another embodiment, the position of the pin 221 can be arbitrarily set based on the position of the coil end.

[0073] It can be understood that the main body 22 includes at least two pins 221, two of which are connected to the coil 40 to form a loop.

[0074] In one embodiment, the outer wall of the sleeve 21 can be wound with multiple coils 40 at the same time, and the rotation directions and wire diameters of the multiple coils 40 can be different to obtain different magnetic field directions and different magnetic field strengths. The rotation directions and wire diameters of the coils 40 can be arbitrarily set based on the movement direction of the core 50 and the required magnetic field strength.

[0075] See also Figure 4 A schematic diagram of the partial structure of a transmission terminal 20 provided in an embodiment of the present application is shown.

[0076] In one embodiment, if Figure 4 As shown, the outer wall of the sleeve 21 is provided with a coil groove 212, which is used to fix and at least partially accommodate the coil 40. The coil groove 212 surrounds the outer wall of the sleeve 21, and the coil 40 is wound in the coil groove 212 of the outer wall of the sleeve. The surface of the coil groove 212 facing the plug pin 221 and the surface away from the plug pin 221 can limit the coil 40, prevent the coil 40 from moving along the axis of the sleeve 21 toward the two ends of the sleeve 21, causing the coil 40 to fall off, and also prevent the coil 40 from wearing against other components of the electric control valve 100, avoiding affecting the conduction of the coil 40.

[0077] In one embodiment, the coil slot 212 includes a spiral pattern, and the hand direction and lead angle of the spiral pattern are the same as the hand direction and lead angle of the coil 40. The same hand direction and lead angle allow the coil 40 to fit better in the coil slot 212. At the same time, the spiral pattern can guide the winding of the coil 40, so that each turn of the coil 40 is parallel to each other, and the magnetic field generated by each turn of the coil 40 is in the same direction, thereby increasing the size of the magnetic field generated by the coil 40.

[0078] See also Figure 5 A schematic diagram of the structure of a magnetic conductive ring 23 provided in one embodiment of the present application is shown.

[0079] In one embodiment, if Figure 2 and Figure 5As shown, the transmission terminal 20 includes a magnetic ring 23, which is at least partially embedded in the outer wall of the transmission terminal 20. The magnetic ring 23 is arranged side by side with the coil 40 and is located on the side of the coil 40 away from the valve body 10. The magnetic ring 23 is used to increase the magnetic field generated by the coil 40.

[0080] The magnetic conductive ring 23 includes an inner ring 231, and the size of the inner ring 231 is larger than the size of the inner cavity of the sleeve 21. When the magnetic conductive ring 23 is embedded in the transmission terminal 20, the inner ring 231 is sleeved outside the iron core 50. The magnetic conductive ring 23 sleeved on the iron core 50 can increase the magnetic field generated after the coil 40 is energized. Through the inner ring 231 of the magnetic conductive ring 23, the magnetic conductive ring 23 can concentrate and enhance the magnetic field, so that the magnetic field is more concentrated and evenly distributed and then increases, which is convenient for controlling the movement of the iron core 50 in the inner cavity of the sleeve 21.

[0081] In one embodiment, if Figure 4 and Figure 5 As shown, the side wall of the transmission terminal 20 includes a mounting groove 24, and the mounting groove 24 is used to install the magnetic conductive ring 23. The magnetic conductive ring 23 includes a limiting step 232, and the limiting step 232 is located on the outer wall of the magnetic conductive ring 23, and the step surface of the limiting step 232 is perpendicular to the end surface of the magnetic conductive ring 23. When the magnetic conductive ring 23 is inserted into the mounting groove 24, the limiting step 232 contacts the transmission terminal 20, limiting the insertion depth of the magnetic conductive ring 23.

[0082] In another embodiment, the magnetic conductive ring 23 can be inserted into and pass through the mounting groove 24 , and the depth of the magnetic conductive ring 23 inserted into the main body 22 can be arbitrarily set based on the desired effect of enhancing the magnetic field.

[0083] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0084] It should be understood that the application of this application is not limited to the above examples. For ordinary technicians in this field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in this field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this application still fall within the scope covered by this application.

Claims

1. A transmission terminal, characterized in that: The transmission terminal is fixed to the valve body of the electric control valve, and the transmission terminal includes: a sleeve and a main body, the main body is fixed to one end of the sleeve, the sleeve is sleeved outside the valve body, the inner cavity of the sleeve is also used to accommodate the iron core, the outer wall of the sleeve is used to wind the coil, and the coil controls the sliding of the iron core in the sleeve by turning on and off the power, and drives the valve core to cover or open the valve port of the valve body.

2. The transmission terminal according to claim 1, characterized in that: The main body comprises a pin, which is located at a side of the coil away from the valve body, one end of the pin is connected to the coil, and the other end extends in a direction away from the coil.

3. The transmission terminal according to claim 2, characterized in that: The sleeve comprises a positioning groove, which is recessed in the outer wall of the sleeve and is used to fix the coil end connected to the pin.

4. The transmission terminal according to claim 2, characterized in that: The insertion pin includes a bending portion, the bending portion is bent toward the center of the main body, and the insertion pin portion is accommodated inside the main body.

5. The transmission terminal according to claim 1, characterized in that: The outer wall of the sleeve is recessed with a coil groove, and the coil groove is used to fix and at least partially accommodate the coil.

6. The transmission terminal according to claim 5, characterized in that: The coil slot comprises a spiral pattern, and the hand direction and the lead angle of the spiral pattern are the same as the hand direction and the lead angle of the coil.

7. The transmission terminal according to any one of claims 1 to 6, characterized in that: The transmission terminal includes a magnetic conductive ring, which is at least partially embedded in the outer wall of the transmission terminal. The magnetic conductive ring is arranged side by side with the coil and is located on the side of the coil facing the main body. The magnetic conductive ring is used to increase the magnetic field generated by the coil.

8. The transmission terminal according to any one of claims 1 to 6, characterized in that: The iron core comprises a spring, which is embedded in the iron core. One end of the spring abuts against the iron core, and the other end abuts against the valve body. The spring is used to drive the iron core to reset.

9. The transmission terminal according to any one of claims 1 to 6, characterized in that: The valve port of the valve body is located at one end of the valve body away from the main body, and the side wall of the valve body is also provided with an opening connected to the valve port. The valve core is used to cover or open the valve port at the end of the valve body.

10. An electrically controlled valve, characterized in that: It comprises a valve body, a valve core, an iron core, a coil and the transmission terminal according to any one of claims 1 to 9, wherein the sleeve of the transmission terminal is sleeved outside the valve body, the valve core is arranged inside the valve body, the coil is wound around the outer wall of the sleeve, and the iron core is arranged in the inner cavity of the sleeve.

11. An air spring, characterized in that: It comprises an airbag and the electrically controlled valve according to claim 10, wherein the airbag comprises a main air chamber and a secondary air chamber, and the electrically controlled valve is arranged between the main air chamber and the secondary air chamber.

12. A shock absorbing assembly, characterized in that: Includes the air spring as claimed in claim 11.

13. A vehicle, characterized in that: Includes the shock absorbing assembly according to claim 12 or the air spring according to claim 11.

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