CN203963030U - Solenoid valve - Google Patents

Abstract

The utility model discloses a kind of solenoid valve, comprise valve body, valve body is provided with assembly department; Coil brace; Spool; Tuyere, tuyere is located on assembly department and part enters receiving cavity and is oppositely arranged with spool, and in tuyere, is formed with air guide through hole, and the opening of air guide through hole is provided with projection, and wherein, tuyere is positioned on the end face of receiving cavity and is provided with at least one first recess; Elastic component, elastic component is arranged between spool and tuyere, and the power of spool away from tuyere motion is provided; Sealing, Sealing is fixed on spool towards one end of tuyere, and Sealing is for the opening of confined bed vent hole, and when Sealing sealing opening, the first recess communicates with ambient atmosphere, and the first recess does not communicate with air guide through hole.According to the utility model embodiment's solenoid valve, solved Sealing and be adsorbed on and on tuyere, form negative cavity, the problem that the Sealing in solenoid valve and tuyere can reliable separation, has guaranteed the normal stable operation of solenoid valve.

Description

Solenoid valve

Technical field

The utility model relates to a kind of solenoid valve.

Background technique

Solenoid valve is under "on" position, and spool moves until the opening of Sealing confined bed vent hole to the direction of tuyere under the effect of electromagnetic force, and now, the spring being set on spool and tuyere is compressed, and lays in certain elastic potential energy; Solenoid valve is under off-position, and before spring discharges, the elastic potential energy of deposit, promotes Sealing and move to the direction away from tuyere, and Sealing is separated with tuyere.But nondisjunction often appears in Sealing and tuyere, cause normally stable operation of solenoid valve.

Model utility content

The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, an object of the present utility model is to propose a kind of solenoid valve, and the Sealing in described solenoid valve can be realized reliable cooperation with separated with tuyere, guarantees normally stably operation of solenoid valve.

According to solenoid valve of the present utility model, comprise: valve body, described valve body is provided with assembly department; Coil brace, described coil brace is located in described valve body, is formed with the receiving cavity of both ends open in described coil brace; Spool, described spool is arranged in described receiving cavity, and described spool can move along the length direction of described receiving cavity under the driving of external force; Tuyere, described tuyere is located on described assembly department, and is formed with air guide through hole in described tuyere, the opening of described air guide through hole is provided with projection, and wherein, the opening of described air guide through hole is provided with projection, wherein, the end face that described tuyere is positioned at described receiving cavity is provided with at least one first recess; Elastic component, described elastic component is arranged between described spool and described tuyere, and the power of described spool away from tuyere motion is provided; Sealing, described Sealing is fixed on one end of described spool, and the opening of described air guide through hole is sealed in described sealing for part, and when described Sealing seals described opening, described the first recess communicates with ambient atmosphere, and described the first recess does not communicate with described air guide through hole.

According to solenoid valve of the present utility model, by the first recess being set at Sealing in a side of tuyere, the first recess communicates with ambient atmosphere, the first recess does not communicate with air guide through hole, having solved Sealing is adsorbed on and on tuyere, forms negative cavity, cannot realize the problem of reliable separation, guarantee the normal stable operation of solenoid valve.

In addition, the solenoid valve above-mentioned according to the utility model, can also have following additional technical characteristics:

The opening interval of described the first recess and described air guide through hole arranges.

Described Sealing is provided with at least one second recess towards a side of described tuyere.

Described the first recess is two, and two described the first recesses arrange along the outer circumferential face interval of described Sealing.Thus, can effectively avoid Sealing be adsorbed on cannot be separated reliably on the end face of tuyere problem, guarantee the normal stable operation of solenoid valve.

Described the first recess is around the outer circumferential face of described Sealing.Thus can be so that Sealing machine shaping be convenient, and avoid Sealing be adsorbed on tuyere end face cannot reliable separation problem.

Described spool is the cylindrical body of hollow.Thus, can reduce the weight of whole spool, and then reduce spool and move needed driving force to tuyere direction.

Described the first recess is the first through hole that runs through the thickness direction of described Sealing.

Described Sealing is embedded in described spool, the outer circumferential face of described Sealing and the laminating of described spool inwall, and the upper-end surface of described Sealing is lower than the upper-end surface of described spool.Thus, can improve the intensity that coordinates of spool and tuyere, effectively improve the stability of electromagnetic valve work performance.

Described spool and described coil brace Spielpassung.Be conducive to improve the exhaust efficiency of solenoid valve.

On the periphery wall of described spool, be formed with at least one cutting face.Thus, can further increase the distance between the periphery wall of spool and the inwall of coil brace, more be conducive to solenoid valve and carry out degassing function.

Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.

Accompanying drawing explanation

Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination obviously and is easily understood becoming embodiment's description, wherein:

Fig. 1 is the sectional view of solenoid valve in correlation technique;

Fig. 2 is the enlarged view of a-quadrant in Fig. 1;

Fig. 3 is the enlarged view in A1 region in Fig. 2;

Fig. 4 is according to the exploded view of an embodiment's of the utility model solenoid valve;

Fig. 5 is the sectional view while not switching on according to an embodiment's of the utility model solenoid valve, and wherein, sealing gasket and tuyere are in separated state;

Fig. 6 is the enlarged view in B region in Fig. 5;

Fig. 7 is the structural representation of spool in Fig. 5;

Fig. 8 is the sectional view while not switching on according to another embodiment's of the utility model solenoid valve, and wherein, sealing gasket and tuyere are in separated state

Fig. 9 is the enlarged view in C region in Fig. 8;

Figure 10 is the structural representation of Sealing in Fig. 8.

Reference character:

Traditional solenoid valve 100; Vacuum chamber 110;

Solenoid valve 200 of the present utility model;

Valve body 1; Assembly department 11; Mounting hole 111; Receiving cavity 112;

Tuyere 2; Air guide through hole 22; Opening 23; Projection 24; Body 25; The first recess 251;

Coil brace 3;

Spool 4; Cutting face 41;

Sealing 5; The second recess 51;

Elastic component 6;

Coil 7; Valve seat 8.

Embodiment

Describe embodiment of the present utility model below in detail, described embodiment's example is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment who is described with reference to the drawings, be exemplary, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, orientation or the position relationship of the indications such as term " " center ", " length ", " width ", " thickness ", " on ", D score, " vertically ", " level ", " top ", " end " " interior ", " outward " be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; rather than the device of indication or hint indication or element must have specific orientation, with specific orientation structure and operation, so can not be interpreted as restriction of the present utility model.

In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.

In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but contact by the other feature between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.

Below with reference to Fig. 1-Figure 10, describe according to the utility model embodiment's solenoid valve 200.The utility model embodiment's solenoid valve 200 can be widely used in pneumatic system, such as electronic sphygmomanometer, gas-pressure massaging product or air circuit breaker control system etc.

As shown in Fig. 4, Fig. 5 and Fig. 8, according to the utility model embodiment's solenoid valve 200, can comprise: valve body 1, tuyere 2, coil brace 3, spool 4, elastic component 6 and Sealing 5.

Particularly, valve body 1 can be provided with assembly department 11.Coil brace 3 is located in valve body 1, and in coil brace 3, is formed with the receiving cavity 112 of both ends open.Spool 4 is arranged in receiving cavity 112, and spool 4 can be mobile along the length direction (as the above-below direction in Fig. 5) of receiving cavity 112 under the driving of external force, and wherein, spool 4 can be made for having the material of magnetic conductivity, for example iron, manganese.It will be appreciated by those skilled in the art that, the outer circumferential face of coil brace 3 can be wound with coil 7, and coil 7 generates an electromagnetic field under "on" position, and spool 4 can move along tuyere 2 directions under the length direction of receiving cavity 112 under the effect of electromagnetic force.

Tuyere 2 is located on assembly department 11 and part enters receiving cavity 112 and is oppositely arranged with spool 4, and in tuyere 2, be formed with air guide through hole 22, opening 23 places of air guide through hole 22 can be provided with projection 24, and wherein, the end face that tuyere 2 is positioned at receiving cavity 112 is provided with at least one first recess 251.Wherein, the quantity of the first recess 251 can be one or more, can make suitable adjustment according to actual conditions.

The mode that tuyere 2 is located on assembly department 11 can be welding, riveted joint or buckle link etc., for example, on assembly department 11, mounting hole 111 can be set, one end of tuyere 2 (as the upper end in Fig. 5) is positioned at valve body 1, the other end of tuyere 2 (as the lower end in Fig. 5) stretches out outside valve body 1 through mounting hole 111, but the utility model is not limited to this.In other words, the top of tuyere 2 is positioned at valve body 1, and the bottom of tuyere 2 is positioned at outside valve body 1.

Elastic component 6 can be arranged between spool 4 and tuyere 2, and the power of spool away from tuyere motion is provided.For example one end of elastic component 6 can (as the upper end in Fig. 5) be resisted against on spool 4, and the other end of elastic component 6 (as the lower end in Fig. 5) can be resisted against on tuyere 2.Sealing 5 is fixed on one end (as the lower end in Fig. 5) of spool 4, and Sealing 5 is for sealing opening 23, and when Sealing 5 sealing opening 23, the first recess 251 communicates with ambient atmosphere, and the first recess 251 does not communicate with air guide through hole 22.In other words, when spool 4 contacts with projection 24, the opening 23 of Sealing 5 sealing air guide through holes 22.For example, as shown in Figure 4,5, elastic component 6 can be stage clip, when solenoid valve 200 is under "on" position not, the stage clip that is certain compressive state is fixed on spool 4 in receiving cavity 112, and spool 4 is with tuyere 2 in separated state, and the opening 23 of air guide through hole 22 does not seal; When solenoid valve 200 is under "on" position, when spool 4 moves near the direction of tuyere 2, stage clip is further compressed, and lay in elastic potential energy, the opening 23 of Sealing 5 confined bed vent holes 22, after solenoid valve 200 power-off, electromagnetic force disappears, stage clip discharges the elastic potential energy of deposit, and drives spool 4 to move to the direction away from tuyere 2.

In traditional solenoid valve 100, as shown in Figure 1-Figure 3, by elasticity preferably make conventionally by rubber parts or working of plastics for Sealing, Sealing coordinates with projection, the opening of effective sealing air guide through hole, because certain elastic strain can occur Sealing, between the outer wall of the lower surface of Sealing, the end face of tuyere (end face of the one end coordinating with Sealing) and projection, easily form negative cavity 110.If the elastic potential energy of elastic component deposit is not enough to overcome in extraneous atmospheric situation, after solenoid valve 100 power-off, Sealing cannot be separated reliably with the opening of air guide through hole, thereby cause solenoid valve 100 normally to work.

According to the utility model embodiment's solenoid valve 200, at tuyere 2, be positioned at and on the end face of receiving cavity 112, be provided with at least one first recess 251, the first recess 251 and communicate with ambient atmosphere, and the first recess 251 does not communicate with air guide through hole 22.That is to say, when Sealing 5 seals the opening 23 of air guide through holes 22, due to the existence of the first recess 251, negative cavity cannot form, thereby can effectively solve Sealing 5, be adsorbed on tuyere 2 end faces, the normally problem of resilience.

Below simply describe according to the working procedure of the utility model embodiment's solenoid valve 200, one end of tuyere 2 (being positioned at the one end outside valve body 1) can be connected with air pump with the air bag of electronic sphygmomanometer respectively, when solenoid valve 200 is in "on" position lower time, under the effect of electromagnetic force, spool 4 moves to the direction near tuyere 2, spool 4 coordinates with tuyere 2, stage clip is further compressed and lays in elastic potential energy, now, the opening 23 of Sealing 5 confined bed vent holes 22, with at air bag, between air pump and solenoid valve 200, form Yi Ge airtight chamber, to complete the gas replenishment process of air bag, when solenoid valve 200 is in "on" position not lower time, electromagnetic force disappears, and stage clip discharges the elastic potential energy of deposit, and drives spool 4 to moving away from tuyere 2 directions, and the opening 23 of air guide through hole 22 is opened, to realize the process of air bags.The working procedure of above-mentioned solenoid valve 200 is an optional embodiment of the present utility model, but is not to restriction of the present utility model.

According to the utility model embodiment's solenoid valve 200; by being positioned at tuyere 2 on the end face of receiving cavity 112, the first recess 251 is set; the first recess 251 communicates with ambient atmosphere; the first recess 251 does not communicate with air guide through hole 22; having solved Sealing 5 is adsorbed on tuyere 2 and forms negative cavity; normally the problem of resilience, has guaranteed the normal stable operation of solenoid valve 200.

Further, as shown in Figure 7, the first recess 51 arranges with opening 23 intervals of air guide through hole 22.That is to say, when Sealing 5 coordinates with the end face of tuyere 2, the first recess 51 is in the situation that guaranteeing that negative cavity communicates with atmosphere, and Sealing 5 is the opening 23 of confined bed vent hole 22 effectively also.Wherein, the first recess 51 can intersect with projection 24 periphery wall or from.

In embodiments more of the present utility model, Sealing 5 can be provided with at least one second recess 51 towards a side of tuyere 2, when the described opening 23 of described Sealing 5 sealing, described the second recess 51 communicates with ambient atmosphere, and described the second recess 51 does not communicate with described air guide through hole.Thus, can further guarantee that Sealing 5 is separated reliably with tuyere 2, improve the stability of solenoid valve 200 service behaviours.

In embodiments more of the present utility model, as shown in Fig. 8, Fig. 9 and Figure 10, the second recess 51 can be two, and two the second recesses 51 can arrange along the outer circumferential face interval of Sealing 5.Thus, can effectively avoid Sealing 5 be adsorbed on cannot be separated on the end face of tuyere 2 problem, guarantee the normal stable operation of solenoid valve 200.Wherein, the shape of the second recess 51 is also not particularly limited, and the second recess 51 can be U-shaped or V-arrangement substantially.But the utility model is not limited to this, the second recess 51 also can be looped around the outer circumferential face of sealing surface, thus can be so that Sealing 5 machine shapings be convenient, and avoid Sealing 5 be adsorbed on cannot be separated on tuyere 2 end faces problem.

In other embodiments of the present utility model, spool 4 can be the cylindrical body of hollow.Like this, can reduce the weight of whole spool 4, and then reduce spool 4 and move needed driving force to tuyere 2 directions.Thus, can improve the sensitivity of solenoid valve 200, improve the using scope of solenoid valve 200.

Alternatively, the second recess 51 can be for running through first through hole (scheming not shown) of the thickness direction of Sealing 5.That is to say, the cylindrical situation that spool 4 is hollow, the first through hole can communicate with the external world by spool 4, thereby makes cannot form negative cavity between Sealing 5 and tuyere 2.Thus, effectively solve Sealing 5 be adsorbed on tuyere 2 cannot be separated problem.Wherein, the quantity of the first through hole is also not particularly limited, and can be one or more.

Advantageously, Sealing 5 is embedded in spool, the outer circumferential face of Sealing 5 and the laminating of spool inwall, and the upper-end surface of Sealing 5 is lower than the upper-end surface of spool 4.That is to say, when spool 4 moves until during the opening 23 of Sealing 5 sealing air guide through holes 22, the projection 24 at opening 23 places can stretch in spool 4 and contact cooperation with Sealing 5 to tuyere 2 directions, the end face of the lower end surface of spool 4 and tuyere 2 first ends is fitted.Thus, can improve the intensity that coordinates of spool 4 and tuyere 2, effectively improve the stability of solenoid valve 200 service behaviours.

Further, spool 4 can be Spielpassung with coil brace 3.That is to say, between spool 4 and the inwall of coil brace 3, be formed with air gap, be not only conducive to spool 4 in the interior activity of coil brace 3, and be conducive to solenoid valve 200 when carrying out degassing function, air-flow can be discharged fast from air gap.Advantageously, on the periphery wall of spool 4, can be formed with at least one cutting face 41.Extend along the length direction of spool 4 cutting face 41.Thus, can further increase the distance between the periphery wall of spool 4 and the inwall of coil brace 3, more be conducive to solenoid valve 200 and carry out degassing function.

According to the utility model embodiment's solenoid valve 200, can also be provided with valve seat 8, valve seat 8 is located at the upper end of valve body 1, and can also be provided with mounting hole 111 on valve seat 8, and the top of coil brace 3 is fastened in mounting hole 111.Thus, can valve seat 8 can play the effect of effective fixed coil support 3.

In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiments or example.

Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, modification, replacement and modification.

Claims (10)

1. a solenoid valve, is characterized in that, comprising:

Valve body, described valve body is provided with assembly department;

Coil brace, described coil brace is located in described valve body, is formed with the receiving cavity of both ends open in described coil brace;

Spool, described spool is arranged in described receiving cavity, and described spool can move along the length direction of described receiving cavity under the driving of external force;

Tuyere, described tuyere is located on described assembly department and part enters described receiving cavity and is oppositely arranged with described spool, and in described tuyere, be formed with air guide through hole, the opening of described air guide through hole is provided with projection, wherein, described tuyere is positioned on the end face of described receiving cavity and is provided with at least one first recess;

Elastic component, described elastic component is arranged between described spool and described tuyere, and the power of described spool away from described tuyere motion is provided;

Sealing, described Sealing is fixed on described spool towards one end of described tuyere, and described Sealing is used for sealing the opening of described air guide through hole, and when described Sealing seals described opening, described the first recess communicates with ambient atmosphere, and described the first recess does not communicate with described air guide through hole.

2. solenoid valve according to claim 1, is characterized in that, the opening interval of described the first recess and described air guide through hole arranges.

3. solenoid valve according to claim 1, it is characterized in that, described Sealing is provided with at least one second recess towards a side of described tuyere, when described Sealing seals described opening, described the second recess communicates with ambient atmosphere, and described the second recess does not communicate with described air guide through hole.

4. solenoid valve according to claim 3, is characterized in that, described the first recess is two, and two described the first recesses arrange along the outer circumferential face interval of described Sealing.

5. solenoid valve according to claim 1, is characterized in that, described the first recess is around the outer circumferential face of described Sealing.

6. solenoid valve according to claim 1, is characterized in that, the cylindrical body that described spool is hollow.

7. solenoid valve according to claim 1, is characterized in that, described the first recess is the first through hole that runs through the thickness direction of described Sealing.

8. solenoid valve according to claim 1, is characterized in that, described Sealing is embedded in described spool, the outer circumferential face of described Sealing and the laminating of described spool inwall, and the upper-end surface of described Sealing is lower than the upper-end surface of described spool.

9. solenoid valve according to claim 1, is characterized in that, described spool and described coil brace Spielpassung.

10. solenoid valve according to claim 1, is characterized in that, is formed with at least one cutting face on the periphery wall of described spool.