CN218883068U - Three-way valve plug support - Google Patents

Abstract

The utility model relates to a three-way valve end cap support, include: a fixing block, on which a through hole for accommodating at least a part of the flexible plug is formed; and a hollow frame disposed at the periphery of the fixing block and connected to the fixing block. And in the direction parallel to the central axis of the through hole of the fixed block, a containing groove for inserting the inner magnet is formed between the fixed block and the frame or a containing groove for inserting the inner magnet is formed in the space not occupied by the fixed block in the frame. The utility model discloses a fixed flexible end cap in three-way valve end cap support middle part, the coil can be fixed in the periphery, and inside formation can supply magnet male accepting groove to allow miniature three-way valve configurable to adopt coil and end cap support as the active cell, magnet is as the stator, and can set up inside and outside double-deck magnet, can provide sufficient magnetic field drive power and promote the active cell and remove, ensure the sealed effect of end cap to gas outlet or air inlet.

Description

Three-way valve plug support

Technical Field

The utility model relates to an air valve, in particular to end cap support of three-way valve.

Background

The existing miniature three-way valve usually adopts a structure that a coil is used as a stator, a magnet and a magnetic conduction structure are used as a rotor, and has the defects of low driving efficiency, weak driving force and easy disturbance from an external magnetic field. There is therefore a need for improved internal structures, particularly for the construction of bulkhead supports.

Disclosure of Invention

An object of the utility model is to provide a light and convenient three-way valve end cap support of assembling a plurality of parts of quality.

A three-way valve plug support comprising: a fixing block, on which a through hole for accommodating at least a part of the flexible plug is formed; and a hollow frame disposed at the periphery of the fixing block and connected to the fixing block. And in the direction parallel to the central axis of the through hole of the fixed block, an accommodating groove into which the inner magnet can be inserted is formed between the fixed block and the frame or an accommodating groove into which the inner magnet can be inserted is formed in the space not occupied by the fixed block in the frame.

In one embodiment, the fixing block is a column with a regular shape, the frame is substantially square, the fixing block is connected with four corners of the frame through at least four connecting arms, and the accommodating groove is defined by the fixing block, the frame and the connecting arms.

In one embodiment, the outer surface of the side wall of the frame is formed with a wire slot for winding or receiving a coil.

In one embodiment, a through hole communicating with the housing groove is formed in a side wall of the frame so that the coil is opposed to the inner magnet inserted into the housing groove with a space therebetween when the coil is fixed to the frame.

In one embodiment, the fixing block is a plate, at least a portion of an outer periphery of the fixing block is connected to an inner side of an upper end of the frame, and a space in the frame not occupied by the fixing block forms a receiving groove into which a foreign object can be inserted.

In one embodiment, a protrusion for limiting an upper limit of movement of the plug holder is formed on an upper end surface of the frame.

In one embodiment, a groove is formed on an end surface of the fixing block, and one end of the groove is communicated with the through hole.

The utility model discloses a fixed flexible end cap in three-way valve end cap support middle part, the coil can be fixed in the periphery, and inside formation can supply magnet male accepting groove to allow miniature three-way valve configurable to adopt coil and end cap support as the active cell, magnet is as the stator, and can set up inside and outside double-deck magnet, can provide sufficient magnetic field drive power and promote the active cell and remove, ensure the sealed effect of end cap to gas outlet or air inlet.

Drawings

Fig. 1 is a perspective view of a micro three-way valve according to a first embodiment of the present invention.

Fig. 2 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of the micro three-way valve of fig. 1.

Fig. 3 is an exploded view of the micro three-way valve of fig. 1.

Fig. 4 is a schematic structural diagram of a base of the three-way valve according to the first embodiment.

Fig. 5 is a schematic structural view of a mover of a three-way valve according to the first embodiment.

Fig. 6 is a schematic structural view of an upper spring and a lower spring of the three-way valve according to the first embodiment.

Fig. 7 is a perspective view of a micro three-way valve according to a second embodiment of the present invention.

Fig. 8 is a cross-sectional view of the micro three-way valve of fig. 7.

Fig. 9 is an exploded view of the micro three-way valve of fig. 7.

Fig. 10 is a schematic structural view of a base of a three-way valve according to a second embodiment.

Fig. 11 is a schematic structural view of a plug holder of the three-way valve according to the second embodiment.

Fig. 12 is a schematic structural view of an upper case of the three-way valve according to the second embodiment.

Detailed Description

The three-way valve plug support of the present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The first embodiment is as follows:

referring to fig. 1 to 3, in one embodiment, the micro three-way valve mainly includes a base 10, an upper case 20, a plurality of external magnets 30, a plug holder 40, a coil 41, a flexible plug 42, and an elastic support member 50.

Referring to fig. 4, the base 10 is substantially square plate-shaped, and a hollow convex pillar extending towards two sides of the base is formed at the center thereof as a first air outlet 11. The base is made of non-conductive materials, such as plastics, preferably polymethyl methacrylate plastics, and is integrally formed, high in strength and light in weight. A boss 12 extends from a side of the base 10 facing the upper case 20 near the periphery toward the upper case 20, and a plurality of fixing posts 13 are symmetrically formed on the boss 12 for fixing an outer end 522 of the lower spring 52 (see fig. 6). A through hole 14 for passing the conductive terminal 62 is formed near the fixing post 13. Two through holes 15 are formed between the boss 12 and the first air outlet 11, and the through holes 15 are symmetrically located on two sides of the first air outlet 11.

The upper case 20 includes a top plate 21 and a sidewall 22 integrally extending from a periphery of the top plate 21. The end of the side wall 22 is fixedly connected to the base 10, so that the upper shell 20 and the base together form a hollow housing. In the present embodiment, the top plate 21 has a substantially square plate shape, and the center of the top plate 21 is provided with the second air outlet 23. An air inlet 24 is provided in the side wall 22 adjacent the base 10. In this embodiment, the upper case 20 is made of a metal material with magnetic permeability, such as iron or 430 stainless steel, and can serve as a case to protect the internal structure and also as a magnetizer to prevent the internal magnetic field from overflowing, thereby improving the utilization rate of the magnetic field. A through hole is formed at the center of the top plate 21, and a hollow tube is connected to the periphery of the through hole to form a second air outlet 23. The second air outlet 23 is also made of a metal material, such as 430 stainless steel, and is welded to the upper case 20 with one end protruding from the inside of the upper case 20 and the other end protruding outward from the upper case 20. The air inlet 24 is also a hollow tube welded around the hole in the side wall 22, and is also made of a metal material, similar to the second air outlet 23. In contrast, the first and second air outlets 11 and 23 preferably protrude inside the housing defined by the upper case 20 and the base 10, so that the air outlets can be easily blocked from the inside, and the air inlet 24 does not need to protrude inside the upper case 20.

In this embodiment, the first air outlet 11 and the second air outlet 23 are located on the same straight line. It is understood that in other embodiments, the first air outlet 11 and the second air outlet 23 may be located on different lines parallel to each other.

A plurality of outer magnets 30 (four in this embodiment) are fixed as part of the stator inside the side wall 22 of the upper casing 20, for example, but not limited to, being bonded to the side wall 22 of the upper casing 20 by glue.

The choke plug holder 40, the coil 41, and the flexible choke plug 42 are provided as movers on the inner peripheral sides of the plurality of outer magnets 30. Referring to fig. 5, the plug holder 40 mainly includes a fixing block 43 formed with a through hole 431, and a hollow frame 45 connected to the fixing block 43 through a plurality of connecting arms 44. In this embodiment, the fixing block 43 is a column of a regular outer shape (square in this embodiment), and the through hole 431 is formed on the center axis thereof. The flexible plug 42 is a long strip structure with both ends being plugs, the middle part of the flexible plug is fixed in the through hole of the fixed block 43, and the two plugs protrude from both ends of the fixed block 43. The connecting arm 44 has one end extending substantially perpendicularly from an outer wall 432 of the fixed block 43 and the end connected to an inner wall of the frame 45. That is, the frame 45 is sleeved on the periphery of the fixed block 43, and the positions of the frame 45 corresponding to the two ends of the fixed block 43 are openings, so as to allow the two ends of the plug to extend out or expose. In this way, a plurality of receiving grooves 46 into which a foreign object (the inner magnet 80 in the present embodiment) can be inserted are formed between the fixed block 43 and the frame 45 in a direction parallel to the center axis of the through hole 431 of the fixed block 43. In this embodiment, the frame 45 is substantially square, and the fixing blocks 43 are connected to four corners of the frame 45 by four connecting arms 44. In addition, a plurality of through holes communicating with the receiving grooves 46 are formed at positions of the frame 45 opposite to the outer walls 432 of the fixing blocks 43. This structure not only reduces the weight of the mover, but also facilitates the insertion of the inner magnet into the receiving groove 46 and the opposed arrangement of the inner magnet with the coil 41 at a space, thereby increasing the magnetic force of the magnetic field. The plug support 40 is made of a non-conductive material, preferably plastic.

The outer surface of the sidewall of the frame 45 is formed with a wire groove 451 for facilitating winding or housing of the coil 41. In this embodiment, the coil 41 is preferably a copper or silver conductive coil, and is wound around the outer wall of the frame 45 in the direction of the center axis of the anchor through-hole 431. The wire groove 451 is thus an annular groove recessed from the side wall surface of the frame 45 or formed with bosses at both sides. The wire groove may be a square or elliptical groove or hole formed at the sidewall of the frame 45 when the winding direction of the coil is perpendicular to the direction of the central axis of the fixing block through hole 431. The plurality of through holes formed in the frame 45 at positions facing the outer walls 432 of the fixed blocks 43 and communicating with the receiving grooves 46 reduce the weight of the mover, and also allow the coil 41 to face the inner magnet 80 inserted into the receiving groove of the choke holder 40 with a space therebetween, thereby improving the driving efficiency.

The flexible plug 42 may be formed by injection molding liquid silicone rubber into the fixing block 43, and has an advantage of more stable structure. A groove 434 is further formed on the end surface 433 of the fixing block 43, and one end of the groove 434 communicates with the through hole 431. The groove 434 may facilitate shaping and stabilization of the liquid silicone gel when the liquid silicone gel is injection-molded in the through hole 431.

The mover is suspended by the elastic support assembly 50 within the case composed of the base 10 and the upper case 20. The elastic support assembly 50 allows the choke holder 40 to move between the first air outlet 11 and the second air outlet 23, and allows the coil 41 and the outer magnet 30 to be spaced apart from each other. In this embodiment, the elastic support assembly 50 includes an upper spring 51 and two lower springs 52. Please refer to fig. 6. Upper spring 51 is a plate spring including an inner ring (inner end) 511 for fixedly connecting with the upper end of bulkhead bracket 40 (the end facing top plate 21 of upper case 20), an outer ring (outer end) 512 for connecting with upper case 20, and a plurality of elastic arms 513 sinuously extending between inner ring 511 and outer ring 512.

A projection 452 for restricting the movement of the choke holder 40 to the upper limit is formed on the upper end surface 453 of the frame 45 of the choke holder 40. When the plug holder 40 moves to the farthest end in the direction of the second air outlet 23, the protrusion 452 contacts the upper case 20. In addition, the protrusion 452 may also serve to limit the inner end 511 of the upper spring 51, and may be disposed inside the inner end 511, and the sidewall thereof abuts against the inner end 511, so as to guide the upper spring 51 to be accurately positioned during assembly.

The lower spring 52 is also a plate spring, preferably made of conductive metal, and serves as a conductive path for the coil 41. The two lower springs 52 are not in contact with each other, and each lower spring 52 includes an inner portion 521 fixedly connected to a lower end (an end facing the base 10) of the plug holder 40, two elastic arms 523 extending from both ends of the inner portion 521 in a meandering manner, and an outer portion 522 connected to ends of the elastic arms 523. The outer portion 522 is fixedly connected to the fixing posts 13 on the boss 12 of the base 10, and electrically connected to the conductive terminals 62 in the through holes 14 of the base 10. The inner portion 521 is electrically connected to the end of the coil 41.

In this embodiment, the micro three-way valve further includes two conductive members 60, and the conductive terminal 62 is formed on the conductive members 60. Each conductive member 60 includes a generally rectangular metal plate 61 and two conductive terminals 62 extending substantially perpendicularly from the edges of the metal plate 61. The two conductive members 60 are fixed on a surface of the base 10 facing away from the upper case 20 in a non-contact manner, and the conductive terminals 62 are inserted into the through holes 14 and exposed out of the base 10. Each of the conductive members 60 is electrically connected to one of the lower springs 52. The structure of the conductive piece 60 makes the conductive terminal 62 more stable in fixation and longer in service life, and can exist as a magnetic conductive piece at the same time, so that a complete magnetic conductive shell is formed outside the micro three-way valve, and the magnetic concentration effect is good.

In operation, when the coil 41 is powered on, the plug support 40 can be driven to move between the first air outlet 11 and the second air outlet 23, so that the flexible plug 42 blocks one of the first air outlet 11 and the second air outlet 23, thereby controlling the micro air valve to ventilate through the corresponding air outlet. Since the mover as a whole has a small mass, the driving efficiency is improved. And because the coil 41 is positioned in the magnetic field generated by the outer magnet 30, the magnetic utilization rate is high, the magnetic field is not easy to be disturbed by the external magnetic field, and the stability is good.

In order to provide a space for the deformation of the upper spring 51, the micro three-way valve further includes an annular gasket 25 fixed to the inner surface of the top plate 21 of the upper housing 20, and the outer ring 512 of the upper spring 51 is fixed to a surface of the annular gasket 25 away from the top plate 21. It will be appreciated that in other embodiments, instead of the spacer 25, a plurality of structures may be formed on the top plate 21 that project inwardly of the housing.

In order to further increase the driving force, the micro three-way valve of the present invention further comprises a magnet holder 70 and a plurality of (four in this embodiment) inner magnets 80 fixed on the magnet holder 70. The magnet holder 70 and the inner magnet 80, which are part of the stator, can be fixed to the upper shell 20, in this embodiment to the base 10.

The magnet holder 70 includes a base plate 71 and a plurality of (four in the present embodiment) side plates 72 extending substantially perpendicularly from the base plate 71. The base plate 71 is connected to the top plate 21 of the upper case 20, and a hole 711 for avoiding the second air outlet 23 is formed in the base plate 71. The inner magnet 80 is fixed to the side plate 72. The magnet support 70 is preferably made of a magnetically conductive material, such as a ferrous material. In order to increase the function of the inner magnet 80, a through hole 721 is formed on the side plate 72, and the inner magnet 80 is fixed inside the hole 721. The side plate 72 carries an inner magnet 80, which is inserted into the insertion groove (receiving groove) 46 of the plug holder 40, and the inner magnet 80 is opposed to the coil 41 with a space therebetween.

The outer magnet 30 and the inner magnet 80 can provide enough driving force by matching, so that the response speed of the miniature three-way valve is improved, the service life of the product is prolonged, and the condition of air leakage can not occur even if the miniature three-way valve is used for a long time.

In order to further increase the driving force, the micro three-way valve of the present invention further comprises a magnetism increasing ring 90 fixed on one surface of the base 10 facing the upper case 20. A hole avoiding the first air outlet 11 is formed in the middle of the magnetism increasing ring 90. The booster ring 90 is preferably made of a hard magnetic material, such as ru fe — b. The magnetism increasing ring 90 is opposite to the conductive member 60 through the through hole 15 on the base in a spaced manner, and the magnetic conduction effect is better. The direction and magnitude of the current input to the coil 41 can be controlled to make the magnetic field generated by the coil 41 and the magnetic field of the magnetizing ring 90 attract or repel each other, so as to make the moving part generate a larger acting force.

In the above embodiment, the micro three-way valve has a substantially rectangular parallelepiped shape, so that the base 10 has a substantially square shape, and the outer magnet and the inner magnet are four pieces, respectively. It will be appreciated that in other embodiments, the base may be substantially circular or triangular or pentagonal etc. regular shape, the corresponding micro three-way valve may be substantially cylindrical or regular polygonal cylinder in shape, and the number of external magnets and internal magnets may be adapted as long as it is ensured that the required magnetic field is provided.

In the above embodiment, the first air outlet and the second air outlet both protrude a part towards the inside of the housing, so that the plug can conveniently plug the housing. It can be understood that the first air outlet and the second air outlet may not protrude from the inside of the housing, as long as it is ensured that the corresponding air outlet can be blocked by the plug when the mover moves to the preset position.

In the above embodiment, the boss 12 and the through hole 15 are formed in the base 10. It is understood that in other embodiments, the bosses may be omitted and the fixing posts 13 may be left. The through holes may be omitted, and when there are through holes, the number thereof is not limited to two, and may be more.

In the above embodiment, the flexible plug 42 is integrally formed and extends from both ends of the fixing block 43 of the plug support 40. It can be understood that, in other embodiments, two flexible plugs may be included, and the two flexible plugs are respectively fixed at two ends of the through hole of the fixing block of the plug support.

In the above embodiment, the plug holder 40 includes the fixing block 43, the connecting arm 44, and the frame 45. It should be understood that the shape of the choke plug holder is not limited thereto, as long as the choke plug holder 40 is formed with a receiving groove into which the inner magnet and a portion of the magnet holder are inserted, and is formed with a fixing block for fixing the flexible choke plug and a wire groove for fixing the coil.

In the above embodiment, the coil 41 is wound around the plug holder. It will be appreciated that in other embodiments, a plurality of coils wound about axes perpendicular to the central axis of the mounting block 43 may be used in place of 41 and adapted with appropriate magnets to achieve the same driving effect.

In the above embodiment, the upper spring and the lower spring are used. It will be appreciated that in other embodiments, the upper spring may be omitted and the inner side of the lower spring may be connected to the middle of the plug holder. The structures of the upper spring and the lower spring are not limited thereto as long as the elastic suspension supports the mover and allows the mover to move between the first air outlet and the second air outlet.

In other embodiments, the conductive member can be omitted as long as there is a conductive terminal electrically connected to the lower spring and to an external circuit.

In other embodiments, the magnet holder and the internal magnet may be omitted as desired.

In other embodiments, the flux ring may be omitted as desired.

The second embodiment:

referring to fig. 7 to 12, the structure of the micro three-way valve of the second embodiment is similar to that of the micro three-way valve of the first embodiment, and for convenience of description, the reference numerals of the components of the second embodiment that are basically the same as those of the first embodiment are the same as those of the first embodiment. The structure of the micro three-way valve of the second embodiment is mainly different from that of the first embodiment in that: (1) an air inlet 24 'is formed on the base 10'; (2) An inner magnet 90 'with a structure similar to that of the magnetizing ring 90 is used for replacing the inner magnet 80 and the magnet bracket 70, and the structure of the corresponding plug bracket 40' is changed; (3) The top plate 21' of the upper shell 20' is formed at its proximal edge with a recessed land 211 that is recessed toward the base 10' thereby eliminating the annular gasket 25.

The differences are described in further detail below.

In this embodiment, the base 10' is substantially square plate-shaped, and a hollow convex pillar extending towards two sides of the base is formed at the center thereof as the first air outlet 11. The side of the base 10' facing the upper case 20 is extended toward the upper case 20' near the periphery to form a boss 12', and the boss 12' is symmetrically formed with a plurality of fixing blocks 13' for fixing the outer ends of the lower springs 52. The boss 12' is further formed with a hollow convex column extending outward as an air inlet 24', and the base 10' is formed with a concave pit 16 communicating with the air inlet 24' at a position close to the air inlet 24', i.e., the air inlet channel is L-shaped as a whole. The gas first passes through the gas inlet 24' substantially perpendicular to the first gas outlet 11 and then enters the interior of the micro three-way valve through the recess 16 in a direction substantially parallel to the first gas outlet 11. The design is such that the air inlet 24 'and the base 10' share the inner space, and the actual occupied space is smaller than that of the first embodiment, so that the size of the outer magnet 30 can be designed to be larger, and the magnetic field intensity can be provided to be stronger. In addition, the air inlet 24', the base 10' and the first air outlet 11 can be integrally formed, so that the manufacturing and assembling processes are simplified, and the efficiency is high. In this embodiment, the air inlet 24 'and the base 10', the first air outlet 11 are made of a non-conductive material, such as plastic, preferably polymethyl methacrylate plastic, and are integrally formed, so that the strength is high and the weight is light.

In addition, two conductive members (not shown in the figure, but a metal buried wire) having functions similar to those of the conductive member 60 of the first embodiment are embedded in the base 10', and the conductive members have pads 14' formed at four corners of the boss 12 'of the base 10' for electrical connection with the lower spring 52, and conductive pins 62 'extending from the bottom of the base 10' for electrical connection with an external circuit.

A plurality of through holes 15' are formed between the boss 12' and the first air outlet 11, and the through holes 15' are symmetrically positioned on the periphery of the first air outlet 11. A metal sealing plate 60 'made of magnetic conductivity material and provided with a through hole in the middle is fixed at the bottom of the base 10', so that a complete magnetic conduction shell is formed outside the micro three-way valve, and the magnetic concentration effect is good.

The choke holder 40', the coil 41, and the flexible choke 42' are provided as movers on the inner peripheral sides of the plurality of outer magnets 30. The plug support 40' is made of a non-conductive material, preferably plastic. The plug holder 40 'mainly includes a fixing block 43' formed with a through hole 431 'and a hollow frame 45'. In this embodiment, the fixing block 43' has a substantially square plate shape, and two sides thereof are connected to the inner side of the upper end of the frame 45' and the other two sides thereof are not connected to the frame 45' to form an opening. That is, the frame 45 'is sleeved on the periphery of the fixed block 43', and the positions of the frame 45 'corresponding to the two ends (two sides) of the fixed block 43' are openings, so that the two ends of the plug are allowed to extend out or expose. The space inside the frame 45 'not occupied by the fixing block 43' is the accommodating groove 46 'for the inner magnet 90' to be inserted into. The coil 41 is wound in a wire slot in the outer wall of the frame 45'.

The flexible plug 42 'has a dumbbell-shaped structure with both ends being plugs, the waist portion of the flexible plug is fixed in the through hole 431' of the fixing block 43', and the two plugs protrude from both ends of the fixing block 43'. Compared with the first embodiment, the fixing block 43 'of the second embodiment has a substantially plate shape, so that the height is reduced, and accordingly, the length of the flexible plug 42' is shorter, and the height of the first air outlet 11 protruding from the base 10 'toward the upper housing 20 is increased, and the fixing block is inserted into the frame 45' of the plug support 40 'to be opposite to one end of the flexible plug 42', so that the mover can seal one of the air outlets without moving a long distance.

The flexible plug 42 'may be formed by injection molding liquid silicone gel into the fixing block 43', which has an advantage of more stable structure. A groove 434' is further formed on the end surface 433' of the fixing block 43', and one end of the groove 434' communicates with the through hole 431 '. The groove 434 'may facilitate shaping and stabilization of the liquid silicone gel when the liquid silicone gel is injection molded in the through hole 431'.

A projection 452 for restricting the upper limit of movement of the choke holder 40' is formed on the upper end surface 453 of the frame 45' of the choke holder 40 '. When the plug holder 40' moves to the farthest end in the direction of the second air outlet 23, the protrusion 452 contacts the upper case 20. In addition, the protrusion 452 may also serve to limit the inner end 511 of the upper spring 51, and may be disposed inside the inner end 511, and the sidewall thereof abuts against the inner end 511, so as to guide the upper spring 51 to be accurately positioned during assembly. The inner magnet 90 'has a substantially square shape, and a hole for separating the first air outlet 11 is formed therein, and one end thereof is fixed to the base 10' and the other end thereof is inserted into the receiving groove 46 'formed in the inner side of the frame 45'. The outer magnet 30, the coil 41 and the inner magnet 90 'are oppositely disposed in a direction parallel to the top plate of the upper case 20'. The inner magnet 90' is preferably made of a hard magnetic material, such as ru fe boron. The inner magnet 90 'is opposed to the sealing plate 60' through the through hole 15 'of the base 10' with a space therebetween, and has a high magnetic permeability. The magnetic field generated by the coil 41 can attract or repel the magnetic fields of the outer magnet 30 and the inner magnet 90' by controlling the direction and magnitude of the current input to the coil 41, so that the moving part generates a larger force. Compared with the first embodiment, the second embodiment omits the inner magnet 80 and the magnet bracket 70, and simplifies the structure, the manufacturing and the assembling process of the micro three-way valve.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (7)

1. A three-way valve plug support, comprising:

the fixing block is provided with a through hole for accommodating at least one part of the flexible plug; and

the hollow frame is arranged on the periphery of the fixed block and connected with the fixed block;

and in the direction parallel to the central axis of the through hole of the fixed block, an accommodating groove into which the inner magnet can be inserted is formed between the fixed block and the frame or an accommodating groove into which the inner magnet can be inserted is formed in the space not occupied by the fixed block in the frame.

2. The plug support according to claim 1, wherein the fixing block is a column with a regular shape, the frame is substantially square, the fixing block is connected with four corners of the frame through at least four connecting arms, and the accommodating groove is defined by the fixing block, the frame and the connecting arms.

3. The plug support according to claim 1 wherein the outer surface of the side wall of the frame is formed with a wire slot to facilitate winding or coil containment.

4. The plug support according to claim 3, wherein the frame has a through hole formed in a side wall thereof to communicate with the receiving groove, so that the coil is spaced apart from the inner magnet inserted into the receiving groove when the coil is fixed to the frame.

5. The plug support according to claim 1, wherein the fixing block is a plate-shaped member, at least a portion of an outer periphery thereof is connected to an inner side of an upper end of the frame, and a space in the frame not occupied by the fixing block forms a receiving groove into which an external member is inserted.

6. The plug support according to claim 1, wherein a projection for limiting an upper limit of movement of the plug support is formed on an upper end surface of the frame.

7. The plug support according to claim 1, wherein a groove is formed on an end surface of the fixing block, and one end of the groove is communicated with the through hole.

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