CN217793440U - Direct-push type air valve control device and double-pedal switch - Google Patents

Abstract

The application relates to the technical field of dental treatment machine accessories, and particularly discloses a direct-push type air valve control device and a double-pedal switch, wherein the direct-push type air valve control device comprises an air valve cavity, a valve core and a push part, and 3 interfaces communicated with the inside of the air valve cavity are arranged on the air valve cavity; the first end of the valve core is inserted into the air valve cavity and can slide in the air valve cavity in a reciprocating manner; the second end of the valve core protrudes out of the gas valve cavity; the pushing part comprises a first fixed seat and a push rod, the push rod and the valve core are coaxially arranged, and one end of the push rod is opposite to the second end of the valve core; the push rod is connected with the air valve cavity through a compression spring, and the compression spring is sleeved on the valve core and is positioned outside the air valve cavity; the first fixing seat is sleeved on the push rod, and the push rod can reciprocate on the first fixing seat along the axial direction of the push rod; this application is the case transmission axial action power through setting up promotion portion, avoids the case swing effectively to protect the pneumatic valve.

Description

Direct-push type air valve control device and double-pedal switch

Technical Field

The utility model relates to the technical field of dental unit fittings, in particular to a direct-push type air valve control device and a double-pedal switch.

Background

In the dental comprehensive treatment instrument, the dental treatment machine is a common device, and in order to facilitate the dentist to control a mobile phone on the dental treatment machine, most dental treatment machines in the prior art realize the control of air supply, water supply and the like of the mobile phone by arranging a foot switch, most foot switches use an air valve provided with a lever, wherein the lever and a valve core are integrally connected and extend out of the air valve, when a user steps on the foot switch, an internal mechanism controls the air valve to be opened or closed by prying the lever, and because the lever and the valve core are integrated, when the lever receives the acting force in the prying process, the valve core in the air valve can also receive external force except the axial direction to cause the valve core to swing, the valve core swings to cause the deformation of sealing rings at the inner part and the outer part under the stress, and the sealing rings are damaged to cause the air leakage of the air valve along with the increase of the use times of the foot switch, so that the foot switch can not effectively control the mobile phone, and certain potential safety hazard exists.

Accordingly, the prior art is in need of improvement and development.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a direct-push type air valve control device and a double-pedal switch, which can eliminate acting force outside the axial direction of a valve core in a direct-push mode, effectively prolong the service life of an air valve and ensure that the air valve still has good air tightness after being used for a long time.

The technical scheme of the application is as follows:

in a first aspect, the present application provides a direct push type gas valve control device, including:

the air valve cavity is provided with a first input interface, a first output interface and a second output interface which are communicated with the inside of the air valve cavity;

the first end of the valve core is inserted into the air valve cavity and can slide in the air valve cavity in a reciprocating manner; the second end of the valve core protrudes out of the gas valve cavity;

the pushing part comprises a first fixed seat and a push rod, the push rod and the valve core are coaxially arranged, one end of the push rod is opposite to the second end of the valve core, and the push rod is used for pushing the valve core to move; the push rod is connected with the air valve cavity through a compression spring, and the compression spring is sleeved on the valve core and is positioned outside the air valve cavity; the first fixing seat is sleeved on the push rod, and the push rod can reciprocate on the first fixing seat along the axial direction of the push rod; the first fixed seat is used for limiting the radial movement of the push rod; the compression spring is used for providing restoring elastic force for the push rod.

In the direct-push type air valve control device provided by the application, the push rod is forced to slide and oppress the valve core along the axis, and the valve core only can receive the acting force in the axial direction and can not receive the external force in other directions, so that the valve core is prevented from swinging, and the air valve is effectively prevented from being damaged.

Further, the air valve cavity comprises a first cavity, a second cavity and a third cavity which are sequentially connected, and the diameters of the first cavity, the second cavity and the third cavity are sequentially reduced; the first input interface is connected with the first cavity; the first output interface is connected with the second cavity; the second output interface is connected with the third cavity;

the valve core comprises a tooth-shaped section, a first conical section and a second conical section which are sequentially arranged; in the radial direction, the maximum diameter of the tooth-shaped section is the same as the diameter of the second cavity; the tooth-shaped section is provided with a plurality of openings which are communicated along the axial direction of the valve core, and the openings are used for communicating the spaces at the front side and the rear side of the tooth-shaped section in the axial direction; the diameter of the cone of the first conical section is the same as that of the third cavity, and the conical surface of the first conical section is positioned on one side far away from the tooth-shaped section; the diameter of the second conical section is the same as that of the third cavity, and the conical surface of the second conical section is positioned on one side close to the first conical section.

Furthermore, a first cambered surface and a second cambered surface which are outwards protruded and are symmetrical relative to the longitudinal section of the push rod are arranged on the end face of one end, far away from the compression spring, of the push rod.

In a second aspect, the present application provides a dual foot switch, which includes a base, and further includes two foot control devices fixed on the base, the foot control devices include:

the direct-push type air valve control device is fixedly arranged on the base;

the second fixed seat is fixed on the base and is positioned on one side of the push rod, which is far away from the compression spring; a rotating shaft is arranged on the second fixed seat, and the axial direction of the rotating shaft is parallel to the upper surface of the base and is vertical to the axis of the push rod;

the pedal is rotatably arranged on the rotating shaft, a baffle is arranged on one side of the pedal close to the push rod, and the push rod is close to and aligned with the baffle; the baffle is used for providing pressure for the push rod when the pedal rotates.

The application provides a double-pedal switch, based on above-mentioned straight pushing-type pneumatic valve controlling means, the user is when trampling the footboard, and footboard swing (rotation) makes the baffle oppression push rod to lead to the push rod to receive the effort in a plurality of directions, nevertheless under the limiting displacement of fixing base, the push rod only can be along axial displacement under axial direction's effort, consequently only has axial effort to transmit on the case, thereby avoids the case to receive the effort beyond the axial.

Furthermore, the symmetry plane of the first cambered surface and the second cambered surface is parallel to the upper surface of the base, so that the baffle is attached to and tangent with the first cambered surface or the second cambered surface when the pedal rotates.

The device further comprises a scrap blowing valve, wherein the scrap blowing valve is arranged between the two foot control devices; and the scrap blowing valve is provided with a second input interface and a third output interface and is used for controlling the connection and disconnection of the second input interface and the third output interface.

Furthermore, the first input interfaces of the two foot control devices are connected with each other;

the first output interface of one of the foot control devices is connected with the second input interface;

the first output interface of the other foot control device is connected with external air supply equipment;

a second output interface of one of the foot control devices is connected with an external pneumatic control water valve;

a second output interface of the other foot control device is connected with an external mobile phone;

the third output interface is connected with the external mobile phone.

Further, the mobile phone water supply device further comprises a water supply switch, and the water supply switch is used for controlling water supply of the mobile phone outside.

Furthermore, the lifting rod is rotatably arranged on the base; the lifting rod is used for lifting the whole double-pedal switch.

Furthermore, concave-convex lines are arranged on the pedal.

The utility model has the advantages that: when the push rod receives the external force of a plurality of directions, under the restriction of the fixing base, the push rod only can transmit axial acting force to the valve core, the valve core is effectively prevented from being influenced by acting force in other directions, the valve core is prevented from swinging, the air valve is further protected, the service life of the air valve is prolonged, and the service life of the foot switch is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of a direct-push type gas valve control device according to an embodiment of the present disclosure.

Fig. 2 is a partial sectional view of a direct-push type gas valve control device according to an embodiment of the present application.

Fig. 3 is an exploded view of a direct push type gas valve control device according to an embodiment of the present application.

Fig. 4 is a cross-sectional view of a gas valve chamber in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a valve element in an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a push rod in an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a dual foot switch according to an embodiment of the present application.

Fig. 8 is a schematic diagram of an internal structure of a dual foot switch according to an embodiment of the present disclosure.

FIG. 9 is a schematic structural diagram of a chip blowing valve in an embodiment of the present application.

Description of the reference symbols:

100. an air valve cavity; 110. a first input interface; 120. a first output interface; 130. a second output interface; 140. a first cavity; 150. a second cavity; 160. a third cavity; 200. a valve core; 210. a tooth-shaped section; 211. an opening; 220. a first conical section; 230. a second conical section; 310. a first fixed seat; 320. a push rod; 321. a first arc surface; 322. a second arc surface; 330. a compression spring; 400. a base; 500. a second fixed seat; 510. a rotating shaft; 600. a pedal; 610. a baffle plate; 700. a scrap blowing valve; 710. a second input interface; 720. a third output interface; 800. a water supply switch; 900. and (5) lifting the rod.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but 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 implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in the various examples for purposes of simplicity and clarity and do not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

It should be noted that, the "first end" refers to the end of the valve core 200 inserted into the valve chamber 100; "second end" refers to the end of the valve cartridge 200 that is outside of the valve chamber 100.

In a first aspect, referring to fig. 1, 2 and 3, the present application provides a direct push type gas valve control device, including:

the gas valve cavity 100 is provided with a first input interface 110, a first output interface 120 and a second output interface 130 which are communicated with the interior of the gas valve cavity 100, wherein the gas valve cavity 100 is provided with the first input interface 110, the first output interface 120 and the second output interface 130;

the first end of the valve core 200 is inserted into the air valve cavity 100 and can slide in the air valve cavity 100 in a reciprocating manner; the second end of the valve core 200 protrudes out of the air valve cavity 100;

the pushing part comprises a first fixed seat 310 and a push rod 320, the push rod 320 and the valve core 200 are coaxially arranged, one end of the push rod 320 is opposite to the second end of the valve core 200, and the push rod 320 is used for pushing the valve core 200 to move; the push rod 320 is connected with the air valve cavity 100 through a compression spring 330, and the compression spring 330 is sleeved on the valve core 200 and is positioned outside the air valve cavity 100; the first fixing seat 310 is sleeved on the push rod 320, and the push rod 320 can reciprocate on the first fixing seat 310 along the axial direction of the push rod 320; the first fixing seat 310 is used for limiting the movement of the push rod 320 in the radial direction; the compression spring 330 serves to provide a restoring elastic force to the push rod 320.

In this embodiment, the valve core 200 and the push rod 320 are connected only by the compression spring 330, the second end of the valve core 200 and the push rod 320 are not integrated, and they are independent and spaced from each other. When the valve is actually used, the position of the first fixing seat 310 needs to be accurately set so that the push rod 320 is coaxial with the valve core 200, when one end of the push rod 320, which is far away from the valve core 200, is subjected to an external force, other acting forces except the axial acting force can be offset due to the limit of the first fixing seat 310, the push rod 320 can only move along the axial direction under the axial acting force, when the push rod 320 moves along the axial direction, the axial acting force is transmitted to the valve core 200, and meanwhile, the compression spring 330 is pressed to enable the compression spring 330 to store elastic potential energy, so that the valve core 200 is pushed to move in the air valve cavity 100, and further, the air valve control is realized; when the external force applied to the push rod 320 is removed, the compression spring 330 loses pressure and releases the stored elastic potential energy, at this time, the push rod 320 is restored to the original position under the elastic force of the compression spring 330, and the valve element 200 is restored to the original position under the action of the air pressure.

In some embodiments, referring to fig. 4 and 5, the valve chamber 100 includes a first cavity 140, a second cavity 150, and a third cavity 160 connected in series, the diameters of the first cavity 140, the second cavity 150, and the third cavity 160 decreasing in series; the first input interface 110 is connected with the first cavity 140; the first output interface 120 is connected with the second cavity 150; the second output interface 130 is connected with the third cavity 160;

the valve core 200 comprises a tooth-shaped section 210, a first conical section 220 and a second conical section 230 which are sequentially arranged; the maximum diameter of the toothed section 210 is the same as the diameter of the second cavity 150; the tooth-shaped section 210 is provided with a plurality of openings 211 penetrating along the axial direction of the valve core 200, and the openings 211 are used for communicating the spaces at the front side and the rear side of the tooth-shaped section 210 in the axial direction; the diameter of the cone of the first tapered section 220 is the same as the diameter of the third cavity 160, and the tapered surface of the first tapered section 220 is located on the side far away from the tooth-shaped section 210; the conical diameter of the second conical section 230 is the same as the diameter of the third cavity 160 and the conical surface of the second conical section 230 is located on the side adjacent to the first conical section 220.

In this embodiment, the cooperation between the air valve cavity 100 and the valve core 200 has four working states:

the first working state is that the first input port 110 is communicated with the first output port 120, and the second output port 130 is closed by the valve core 200;

in the first operating state, in the axial direction of the valve spool 200, the tooth-shaped section 210 is located in the second cavity 150 and is staggered from the first output port 120, so that the first input port 110 is communicated with the first output port 120; the first tapered section is located in the third cavity 160 and the second output port 130 is located between the first tapered section 220 and the second tapered section 230, so that the gas is blocked by the first tapered section 220 and cannot flow through the second output port 130.

The second working state is that the first input port 110 is communicated with the second output port 130, and the first output port 120 is closed by the valve core 200;

in the second working state, in the axial direction of the valve core 200, the tooth-shaped section 210 is located in the second cavity 150 and is right opposite to the position of the first output port 120, so that the first output port 120 is blocked by the tooth-shaped section 210, and gas cannot flow through the first output port (the position of the opening on the tooth-shaped section 210 on the circumferential surface of the second cavity 150 and the position of the first output port 120 adopt a staggered design, so that the gas is prevented from flowing into the first output port 120 through the opening, and the tooth-shaped section 210 can only seal the first output port 120); the first tapered section 220 moves out of the third cavity 160 into the second cavity 150 and the gas passes from the opening of the toothed section 210 and into the third cavity 160 to flow through the second output port 130.

The third operating state is that the first input interface 110, the first output interface 120 and the second output interface 130 are all connected at the same time.

In the third operating state, in the axial direction of the valve spool 200, the tooth-shaped section 210 is located in the first cavity 140 and the first conical section 220 is located in the second cavity 150 away from the third cavity 160, and the gas passes through the opening of the tooth-shaped section 210 and flows into the second cavity 150 and the third cavity 160 to flow through the first output port 120 and the second output port 130.

The fourth working state is that the first input interface 110 and the second output interface 130 are both sealed by the valve core 200, and the first output interface 120 is communicated with the air valve cavity 100;

in the fourth operating state, in the axial direction of the valve core 200, the first end of the valve core 200 is tightly attached to the inner wall surface of the gas valve cavity 100, on which the first input port 110 is disposed, so that the first input port 110 is closed, and gas cannot flow through the first input port 110; the second tapered section 230 is located in the third cavity 160 and right opposite to the second output interface 130, so that the second output interface 130 is blocked by the second tapered section 230, and gas cannot flow through the second output interface; the first output port 120 is not blocked in the valve chamber 100 and is connected to the valve chamber 100.

In a further embodiment, the junction of the first cavity 140 and the second cavity 150, and the junction of the second cavity 150 and the third cavity 160 are chamfered to facilitate the return of the toothed segment 210 from the first cavity 140 to the second cavity 150, and to facilitate the return of the first tapered segment 220 from the second cavity 150 to the third cavity 160.

It should be noted that in the above embodiment, the second conical section 230 is kept moving in the third cavity 160 and does not separate from the third cavity 160; in addition, the "input interface" and the "output interface" described in this application are only expressions for easy distinction in the embodiments, and are not limited to be only used as input or output, and in actual application, the input interface may also be used as an output interface, and the output interface may also be used as an input interface, which is determined according to the actual application.

In some embodiments, referring to fig. 6, an end surface of the push rod 320, which is away from one end of the compression spring 330, is provided with a first arc surface 321 and a second arc surface 322 which protrude outward and are symmetrical with respect to a longitudinal section of the push rod 320.

In this embodiment, the first arc surface 321 and the second arc surface 322 are provided to reduce an edge at the end of the push rod 320, so as to reduce friction when the exterior member contacts the push rod 320, protect the exterior member to a certain extent, and prevent the exterior member from being scratched and damaged.

In a second aspect, referring to fig. 7 and 8, the present application provides a dual foot switch, comprising a base 400 and two foot control devices fixed on the base 400, wherein the foot control devices comprise:

in the above-mentioned direct-push type air valve control device, the direct-push type air valve control device is fixedly mounted on the base 400;

the second fixing seat 500, the second fixing seat 500 is fixed on the base 400 and is located on one side of the push rod 320 far away from the compression spring 330; the second fixing base 500 is provided with a rotating shaft 510, and the axial direction of the rotating shaft 510 is parallel to the upper surface of the base 400 and perpendicular to the axis of the push rod 320;

the pedal 600 is rotatably arranged on the rotating shaft 510, a baffle 610 is arranged on one side of the pedal 600 close to the push rod 320, and the push rod 320 is close to and aligned with the baffle 610; the damper 610 serves to provide pressure to the push rod 320 when the pedal 600 is rotated.

In this embodiment, the foot control device only uses the above-mentioned first working state and third working state of the direct-push type air valve control device, and the pedal 600 corresponding to the first working state is not subjected to an external force and is in a default position; the corresponding pedal 600 in the second operating state is stepped to the limit position of the abutment with the base 400 by an external force.

In practical application, the moving distance of the push rod 320 in the axial direction can be controlled by controlling the rotation angle of the baffle 610 after the pedal 600 is stepped on, so that two positions of the pedal 600 correspond to two working states of the direct push type air valve control device.

When the pedal 600 is not subjected to an external force, the baffle 610 is perpendicular to the base 400, and when the pedal 600 is pressed down by the external force, the baffle 610 rotates and pries the push rod 320 (the process is the same as that of prying a lever in the prior art, and the description is omitted here).

It should be noted that, in this embodiment and the following description, all the interfaces (including the first input interface 110, the first output interface 120, and the second output interface 130) between the two direct-pushing type air valve control devices in the dual-pedal switch may be the same or different in shape; for example, the first output interface 120 of one of the direct-push type gas valve control devices is smaller or larger than the first output interface 120 of the other direct-push type gas valve control device; for another example, the first output ports 120 of the two direct-pushing type gas valve control devices are the same in size.

In addition, all the interfaces (including the first input interface 110, the first output interface 120 and the second output interface 130) on the single direct-push type air valve control device in the double-pedal switch can be the same in shape or different in shape; for example, on the same straight push type gas valve control device, the first output interface 120 of the straight push type gas valve control device is smaller or larger than the second output interface 130; for example, in the same straight push type gas valve control device, the first output interface 120 and the second output interface 130 of the straight push type gas valve control device are the same in size.

The numbers of the respective ports (including the first input port 110, the first output port 120 and the second output port 130) in the drawings of the present application are only for disclosing that 3 connectable ports are provided on a single direct-push type gas valve control device and for easy identification and distinction, and do not limit that the ports with the same number are the same in shape and size.

In some embodiments, referring to fig. 8, the symmetry plane of the first arc 321 and the second arc 322 is parallel to the upper surface of the base 400 so that the baffle 610 remains flush and tangent to the first arc 321 or the second arc 322 when the pedal 600 rotates.

In this embodiment, the baffle 610 can constantly keep tangent to the first arc 321 or the second arc 322 when rotating, which is beneficial to reducing the friction between the baffle 610 and the push rod 320, thereby reducing the effort of the user for stepping on the pedal 600; in addition, the baffle 610 is in smooth contact with the cambered surface, so that the baffle 610 is protected, and damage caused by scraping when the baffle 610 is in contact with the push rod 320 is reduced.

In certain embodiments, referring to FIG. 9, the dual foot pedal further comprises a scrap blowing valve 700, the scrap blowing valve 700 being disposed between the two foot operated devices; the chip blowing valve 700 is provided with a second input interface 710 and a third output interface 720, and the chip blowing valve 700 is used for controlling the connection and disconnection of the second input interface 710 and the third output interface 720.

In this embodiment, in practical application, the scrap blowing valve 700 is used as a control switch between the direct-push type gas valve control device and an external mobile phone to realize safety control, thereby being beneficial to avoiding accidental triggering of the mobile phone to eject gas caused by stepping on the pedal 600 by mistake.

In some embodiments (the connecting conduits are not shown in the figures), the first input interfaces 110 of the two foot control devices are connected to each other;

the first output interface 120 of one of the foot control devices is connected with the second input interface 710;

the first output interface 120 of the other foot control device is connected with external air supply equipment;

the second output interface 130 of one of the foot control devices is connected with an external pneumatic control water valve;

the second output interface 130 of the other foot control device is connected with an external mobile phone;

the third output interface 720 is connected to an external handset.

In this embodiment, two ways are available for ejecting gas from a mobile phone:

the method I comprises the following steps: in the first working state and the third working state, the first input interface 110 and the first output interface 120 are always communicated, so that when a user needs to control the mobile phone to spray gas, the gas on-off of the mobile phone can be realized only by pressing the scrap blowing valve 700;

the second method comprises the following steps: the first input interfaces 110 of the two foot control devices are connected with each other and the first output interface 120 of one of the foot control devices is connected with an external air supply device, so that air can be delivered to the two foot control devices, while the second output interface 130 of one of the foot control devices is directly connected with the mobile phone, so that the mobile phone can be ventilated by a user stepping on the pedal 600 corresponding to the foot control device.

In this embodiment, the manner of spraying water to the mobile phone is as follows:

the second output interface 130 of one of the foot control devices is connected with the pneumatic water valve, and when a user steps on the pedal 600 corresponding to the foot control device, air flows into the pneumatic water valve to trigger the pneumatic water valve to be opened, so that water is supplied to the mobile phone (the pneumatic water valve is a control switch between external water supply equipment and the mobile phone).

In this embodiment, the way of spraying the water mist by the mobile phone is as follows:

as described above, one of the two foot control devices controls the water supply of the mobile phone, and the other controls the air supply of the mobile phone, so that the user can step on the two pedals 600 simultaneously to supply water and air to the mobile phone simultaneously, thereby realizing the spraying of the mobile phone.

In some embodiments, referring to fig. 7 and 8, the dual foot switch further includes a water supply switch 800, and the water supply switch 800 is used to control the water supply of the external handset.

In this embodiment, in order to prevent accidental triggering of the water spraying of the mobile phone caused by mistakenly stepping on the pedal 600, the control between the mobile phone and the water supply device is further enhanced by setting the water supply switch 800, so as to realize safety control.

In some embodiments, referring to fig. 7, the dual foot switch further comprises a lifting bar 900, the lifting bar 900 being rotatably disposed on the base 400; the lifting bar 900 is used to lift the entire dual foot switch. The provision of the lifting bar 900 facilitates the user to move the dual foot pedal.

In some embodiments, referring to fig. 7 and 8, the tread 600 is textured. The concave-convex lines are arranged to increase the friction between the foot and the pedal 600, so that the pedal 600 is beneficial to a user to stably tread.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-mentioned preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that the scope of the present invention is to be defined by the appended claims.

Claims (10)

1. A direct-push type gas valve control device is characterized by comprising:

the gas valve comprises a gas valve cavity (100), wherein a first input interface (110), a first output interface (120) and a second output interface (130) which are communicated with the interior of the gas valve cavity (100) are arranged on the gas valve cavity (100);

the first end of the valve core (200) is inserted into the air valve cavity (100) and can slide in the air valve cavity (100) in a reciprocating mode; the second end of the valve core (200) protrudes out of the air valve cavity (100);

the pushing part comprises a first fixed seat (310) and a push rod (320), the push rod (320) and the valve core (200) are coaxially arranged, one end of the push rod (320) is opposite to the second end of the valve core (200), and the push rod (320) is used for pushing the valve core (200) to move; the push rod (320) is connected with the air valve cavity (100) through a compression spring (330), and the compression spring (330) is sleeved on the valve core (200) and is positioned outside the air valve cavity (100); the first fixing seat (310) is sleeved on the push rod (320), and the push rod (320) can reciprocate on the first fixing seat (310) along the axial direction of the push rod (320); the first fixed seat (310) is used for limiting the movement of the push rod (320) in the radial direction; the compression spring (330) is used for providing restoring elastic force for the push rod (320).

2. A direct push type gas valve control device as claimed in claim 1, wherein the gas valve chamber (100) comprises a first cavity (140), a second cavity (150) and a third cavity (160) which are connected in sequence, and the diameters of the first cavity (140), the second cavity (150) and the third cavity (160) are reduced in sequence; the first input interface (110) is connected with the first cavity (140); the first output interface (120) is connected with the second cavity (150); the second output interface (130) is connected with the third cavity (160);

the valve core (200) comprises a tooth-shaped section (210), a first conical section (220) and a second conical section (230) which are sequentially arranged; the largest diameter of the toothed segment (210) is the same as the diameter of the second cavity (150); the tooth-shaped section (210) is provided with a plurality of through openings (211) along the axial direction of the valve core (200), and the openings (211) are used for communicating the spaces of the front side and the rear side of the tooth-shaped section (210) in the axial direction; the conical diameter of the first conical section (220) is the same as the diameter of the third cavity (160), and the conical surface of the first conical section (220) is positioned on the side far away from the tooth-shaped section (210); the conical diameter of the second conical section (230) is the same as the diameter of the third cavity (160), and the conical surface of the second conical section (230) is positioned on the side close to the first conical section (220).

3. A direct push type air valve control device as claimed in claim 2, characterized in that the end surface of the push rod (320) at the end far away from the compression spring (330) is provided with a first arc surface (321) and a second arc surface (322) which are outwardly protruded and symmetrical with respect to the longitudinal section of the push rod (320).

4. A dual foot switch comprising a base (400) and two foot control devices fixed to said base (400), said foot control devices comprising:

the direct-push type gas valve control device as claimed in claim 3, which is fixedly installed on the base (400);

the second fixing seat (500) is fixed on the base (400), and is positioned on one side, away from the compression spring (330), of the push rod (320); a rotating shaft (510) is arranged on the second fixed seat (500), and the axial direction of the rotating shaft (510) is parallel to the upper surface of the base (400) and is perpendicular to the axis of the push rod (320);

the pedal (600), the pedal (600) is rotatably arranged on the rotating shaft (510), a baffle (610) is arranged on one side of the pedal (600) close to the push rod (320), and the push rod (320) is close to and aligned with the baffle (610); the baffle (610) is used for providing pressure for the push rod (320) when the pedal (600) rotates.

5. The double foot switch according to claim 4, characterized in that the symmetry plane of the first arc surface (321) and the second arc surface (322) is parallel to the upper surface of the base (400) so that the baffle (610) remains flush and tangent to the first arc surface (321) or the second arc surface (322) when the pedal (600) rotates.

6. The dual foot pedal according to claim 4 further comprising a crumb blowing valve (700), the crumb blowing valve (700) being disposed between the two foot control devices; the scrap blowing valve (700) is provided with a second input interface (710) and a third output interface (720), and the scrap blowing valve (700) is used for controlling the connection and disconnection of the second input interface (710) and the third output interface (720).

7. The dual foot switch according to claim 6, characterized in that the first input interfaces (110) of the two foot control devices are connected to each other;

the first output interface (120) of one of the foot control devices is connected with the second input interface (710);

the first output interface (120) of the other foot control device is connected with external air supply equipment;

a second output interface (130) of one of the foot control devices is connected with an external pneumatic control water valve;

a second output interface (130) of the other foot control device is connected with an external mobile phone;

the third output interface (720) is connected with the external mobile phone.

8. The dual foot switch according to claim 7, further comprising a water supply switch (800), wherein the water supply switch (800) is used for controlling water supply of the external handset.

9. The dual foot switch of claim 4, further comprising a lever (900), wherein the lever (900) is rotatably disposed on the base (400); the lifting rod (900) is used for lifting the whole double-pedal switch.

10. The dual foot switch of claim 4, wherein said pedal (600) is provided with a male and female pattern.

Images