CN111912112A

CN111912112A - Switch module and water heater

Info

Publication number: CN111912112A
Application number: CN201910390718.9A
Authority: CN
Inventors: 杨勇奇; 王明
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-11-10
Anticipated expiration: 2039-05-10
Also published as: CN111912112B

Abstract

The invention provides a switch assembly and a water heater, wherein the switch assembly comprises: a knob assembly including a cam and a knob coaxially rotating about a rotation axis; the water valve comprises a mandril for controlling the opening and closing of the water valve; the switch part, the switch part includes the contact of control switch part break-make circuit, and wherein, when knob subassembly rotated to the first position, the cam rotated first angle, and the ejector pin is by cam drive in order to put through the water route, and the contact is communicated in order to put through the circuit. By adopting the technical scheme of the invention, the connection of the water path and the circuit is effectively carried out synchronously, the waste of resources is reduced, the electric power is saved, and the mechanical structure is adopted, so that the operation is simple, and the work is stable and reliable.

Description

Switch module and water heater

Technical Field

The invention relates to the technical field of electric control, in particular to a switch assembly and a water heater.

Background

At present, in an instant water heater, a water flow state is detected through a water flow sensor or a floater reed pipe sensor, so that the water flow state is electrified and heated or powered off, however, an impeller of the water flow sensor is easily blocked by foreign matters, and the work is disabled; the floater of the floater type reed switch sensor is easily blocked by foreign matters, so that the work is invalid; in addition, the sensor only determines the power on and off control of a heating device of the water heater, the power on and off of the whole water heater is controlled by an air switch at a wiring position, if the position of the air switch is far away from the water heater, a user cannot frequently turn on and off the air switch, the whole water heater is always in a power-on state, the waste of electric energy is caused, and the aging of the water heater is easily caused.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art or the related art.

In view of the above, an object of the present invention is to provide a switch assembly.

It is another object of the present invention to provide a water heater.

In order to achieve the above object, according to a first aspect of the present invention, there is provided a switch assembly including: a knob assembly including a cam and a knob coaxially rotating about a rotation axis; the water valve comprises a mandril for controlling the opening and closing of the water valve; the switch part, the switch part includes the contact of control switch part break-make circuit, and wherein, when knob subassembly rotated to the first position, the cam rotated first angle, and the ejector pin is by cam drive in order to put through the water route, and the contact is communicated in order to put through the circuit.

In the technical scheme, the contact is communicated to connect the circuit when the ejector rod is communicated with the water channel, namely the communication of the circuit is synchronous with the communication of the water channel, so that the circuit is only communicated when water is used, the circuit is prevented from being always in a starting power-on state, the waste of electric energy is reduced, and the service life of the switch assembly is prolonged; further, the ejector pin passes through cam drive, and the cam is coaxial rotatory with the knob, and such simple structure for mechanical type physical structure control, is difficult for appearing being stuck to wait trouble, still is convenient for maintain, has promoted reliability and stability that switch module used.

Specifically, the cam and the knob rotate coaxially, when the knob assembly rotates to the first position integrally, the cam rotates by a first angle from the initial position at the moment, so that the ejector rod for controlling the water valve switch is jacked by the cam to switch on the water path, and meanwhile, after the cam rotates by the first angle, the contact of the switch on-off circuit of the switch part is also communicated through the driving of the cam.

The switch part can also be a normally open switch, and when the contacts are communicated, the switch part is closed to communicate the circuit.

In the above technical solution, the knob assembly specifically includes: the rotary bracket is internally provided with a rotary hole; wherein, the rotation axis is arranged in the rotation hole, and one side of the rotation axis is provided with a cam, and the other side of the rotation axis is provided with a knob.

In this technical scheme, through the setting of rotation axis, be convenient for connect knob and cam for the cam can rotate along with the rotation of knob in step, thereby the drive ejector pin switch-on water route, and such simple structure, easy to maintain.

Specifically, the knob subassembly is including setting up the runing rest in the runing hole and locating the rotation axis in the runing hole, and the runing rest provides the support for the rotation axis, restricts the ascending degree of freedom of rotation axis in radial direction simultaneously, when the runing rest is installed to the runing hole, only can self rotate to guarantee the stability of operation.

In the above technical solution, the switch assembly further includes: the knob assembly, the water valve and the switch piece are all arranged on the mounting base, and the cam is arranged on one side of the rotating shaft close to the mounting base; and the limiting part is arranged on the mounting base and used for limiting the rotating angle of the cam.

In the technical scheme, the knob assembly, the water valve and the switch piece are arranged on the mounting base, so that the integrity and the structural compactness of a product are improved; the cam is arranged on one side, close to the mounting base, of the rotating shaft, so that the distance between the cam and the bottom of the mounting base is reduced as much as possible, the moment of breakage possibly caused by the dead weight of the cam when shaking occurs is reduced, and the stability in the use process is improved; the rotating angle of the cam is limited by the limiting part, so that the rotating angle of the cam can be guaranteed to accurately reach a first angle, the ejector rod is effectively driven to be communicated with a water channel, the working stability and reliability of the switch assembly are guaranteed, and the use convenience of the switch assembly is improved.

In above-mentioned technical scheme, be equipped with the recess on the circumference of rotation axis, spacing portion specifically includes: the side plate is fixedly arranged on the mounting base; the elastic locating part comprises an elastic part and a protruding part, the elastic part is connected with the side plate, the protruding part is arranged at one end of the elastic part, elastic potential energy is stored in the elastic part in the rotating process of the knob assembly, and the protruding part is clamped in the groove when the knob assembly rotates to the first position.

In the technical scheme, when the knob component rotates to the first position, the bulge is clamped in the groove, so that the knob component stops rotating, the cam stops rotating along with the knob component, the first angle is accurately reached, and the ejector rod is accurately driven to open the water valve to connect the water channel; the elastic limiting piece is used for limiting, so that the knob assembly can be reversely rotated to disconnect the waterway when the waterway is not required to be connected, the operation is simple, the elastic piece is used for limiting, the knob assembly is easy to sense by a user when reaching a limiting position in the rotating process, and the use convenience of the switch assembly is improved; wherein, the setting of curb plate, the elasticity locating part of being convenient for supports and leans on, and then elasticity locating part can utilize elasticity with the bellying joint in the recess.

It can be understood that, because the groove is arranged on the circumferential direction of the rotating shaft, and the rotating shaft is fixed on the mounting base, namely, the axis of the rotating shaft is perpendicular to the mounting base, the arrangement of the elastic limiting part is more facilitated by arranging the side plate on the rotating path, and the limiting of the knob assembly is also facilitated.

In the above technical scheme, the number of the grooves is two, the grooves are symmetrically arranged on the circumference of the rotating shaft, wherein the two grooves are respectively arranged on two sides of the protrusion part when the knob assembly is at the initial position, the protrusion part is clamped in one of the two grooves when the knob assembly rotates to the first position along the first direction, and the protrusion part is clamped in the other one of the two grooves when the knob assembly rotates to the second position along the second direction.

In the technical scheme, the two grooves are respectively arranged on the two sides of the boss, so that the limit of the cam is respectively realized at the two grooves, namely the working gear of the knob assembly is limited at the two grooves, the knob is not stopped at any position in the range of the rotation angle, and the reliability of the working state is ensured; and two symmetrical grooves are arranged, so that the operation of a user is facilitated, and the waterway channel is opened to the maximum extent.

It can be understood that, two grooves are symmetrically arranged in the circumferential direction of the rotating shaft, namely, the angle formed between the two grooves and the axis of the rotating shaft is 180 degrees, and the two grooves are symmetrically arranged, so that the assembly of an installer is facilitated.

In the above technical scheme, the quantity of recess is two, two the recess is adjacent to be located in the circumference of rotation axis, wherein, knob subassembly when initial position, two one in the recess with the bellying joint knob subassembly rotates to the primary importance along first direction, the bellying joint in two another in the recess.

In this technical scheme, through the direct joint of bellying in one of two recesses under initial condition, when user's needs intercommunication circuit and water route simultaneously, only need follow first direction rotation knob subassembly to the primary importance, can realize the intercommunication in circuit and water route through the joint with another recess, deviate from at the bellying recess of primary importance department like this, when the recess of card income primary importance department, can both have obvious vibration sense, thereby the suggestion user, ensure that knob subassembly is rotatory to the position.

It should be noted that, two grooves are adjacently arranged on the circumferential direction of the rotating shaft, so that the distance between the two grooves can be shortened, the time for the knob assembly to rotate from the initial position to the first position is shortened, and the working efficiency is improved.

In the technical scheme, the number of the grooves is multiple, the shape of the protruding part is matched with that of each groove, and when the protruding part is clamped in one of the grooves, the circuit and the water path corresponding to the flow are opened.

In this technical scheme, set for a plurality ofly through the quantity with the recess, and the bellying joint when one in a plurality of recesses, open circuit and the water route that corresponds the flow, be convenient for like this inject a plurality of different work gears to can be according to user's different water demands, rotatory the bellying to different recesses and use the water route and the circuit of different flows, when satisfying user's diversified demand, can also save water resource and electric power resource, reduce extravagantly.

In any one of the above technical solutions, the push rod and the contact are arranged on two sides of the knob assembly, the cam is provided with two protrusions, when the knob assembly rotates to the first position, one of the two protrusions drives the push rod to move so as to connect the water path, and the other protrusion is matched with the switch piece so as to connect the circuit.

In this technical scheme, through setting up two bulges on the cam, make two bulges can be with cam simultaneous movement to when a bulge drive ejector pin switch-on water route, another bulge can cooperate and the switch-on circuit with the switch member, has guaranteed the synchronization of water route switch-on and circuit switch-on.

In any one of the above technical solutions, the number of the cams is two, each cam is provided with a protruding portion, the two cams are coaxially arranged, when the knob assembly rotates to the first position, one of the two cams drives the ejector rod to move so as to connect the water path, and the other cam abuts against the switch part so as to connect the circuit.

In the technical scheme, the two coaxial cams are arranged, so that the protruding parts arranged on each cam can synchronously move along with the rotation of the rotating shaft, one protruding part drives the ejector rod to connect the water channel, and the other protruding part can abut against the switch part to connect the circuit, thereby ensuring the synchronization of water channel connection and circuit connection.

In any one of the above technical solutions, the switch member is a microswitch, and the switch assembly further includes: the switch bracket is fixedly arranged on the mounting base, and the microswitch is arranged on the switch bracket.

In this technical scheme, locate the micro-gap switch on the switch support, be favorable to providing stable support for micro-gap switch, make micro-gap switch can not take place to shift when being supported by the bellying to can guarantee that the circuit breaks off smoothly and remain stable, promote the stability and the reliability of switch module work, and micro-gap switch's sensitivity is high, and occupation space is little.

The invention provides a water heater, which comprises the switch assembly of any one of the first aspect.

In this technical scheme, through adopting the switch module of any one of above-mentioned technical scheme to have above-mentioned technical scheme's whole beneficial effect, no longer describe here.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 illustrates a perspective view of a switch assembly according to one embodiment of the present invention;

FIG. 2 illustrates a perspective exploded view of a switch assembly in accordance with one embodiment of the present invention;

FIG. 3 is a schematic structural view of a knob assembly in a first position of a switch assembly according to an embodiment of the present invention;

FIG. 4 is a partial schematic view of a knob assembly of a switch assembly according to an embodiment of the invention in a first position;

FIG. 5 is another partial schematic structural view of a knob assembly in a first position of a switch assembly according to an embodiment of the present invention;

FIG. 6 is another partial schematic structural view of a knob assembly in a first position of a switch assembly according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a knob assembly in a second position of a switch assembly according to an embodiment of the present invention;

FIG. 8 is a partial schematic structural view of a knob assembly in a second position of a switch assembly according to an embodiment of the present invention;

FIG. 9 is another partial schematic structural view of a knob assembly in a second position in a switch assembly according to an embodiment of the invention;

FIG. 10 is another partial schematic structural view of the knob assembly in a second position of the switch assembly in accordance with one embodiment of the present invention;

FIG. 11 illustrates a partially exploded perspective view of a switch assembly in accordance with an embodiment of the present invention;

FIG. 12 illustrates a partially exploded perspective view of a switch assembly in accordance with another embodiment of the invention;

fig. 13 is a perspective view illustrating a rotation shaft of a switch assembly according to an embodiment of the present invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 13 is:

10 mounting base, 120 cam, 122 knob, 124 rotating bracket, 126 rotating shaft, 1260 groove, 128 cover plate, 14 water valve, 140 push rod, 16 switch piece, 160 contact, 180 side plate, 182 elastic piece and 184 convex part.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Some embodiments according to the invention are described below with reference to fig. 1 to 13.

As shown in fig. 1, a switch assembly according to one embodiment of the present invention includes: the water valve comprises a mounting base 10, a knob assembly, a water valve 14 and a switch piece 16, wherein the knob assembly, the water valve 14 and the switch piece are all fixedly arranged on the mounting base 10.

As shown in fig. 2, in particular, the knob assembly comprises a cam 120 and a knob 122 coaxially rotating about a rotation axis 126; the water valve 14 comprises a mandril 140 for controlling the on-off of the water valve 14; the switch member 16 includes contacts 160 that control the on/off circuit of the switch member 16.

As shown in fig. 3 to 6, when the knob assembly is rotated to the first position, the cam 120 is rotated by a first angle, the push rod 140 is driven by the cam 120 to connect the waterway, and the contact 160 is connected to connect the circuit.

In the embodiment, the contact 160 is communicated to connect the circuit when the top rod 140 is communicated with the water channel, namely, the communication of the circuit and the communication of the water channel are synchronous, so that the circuit is only communicated when water is used, the circuit is prevented from being always in an open power-on state, the waste of electric energy is reduced, and the service life of the switch assembly is prolonged; further, the ejector rod 140 is driven by the cam 120, the cam 120 and the knob 122 rotate coaxially, the structure is simple, the mechanical physical structure control is achieved, faults such as clamping and the like are not prone to occurring, maintenance is facilitated, and reliability and stability of use of the switch assembly are improved.

Specifically, as shown in fig. 7 to 10, the knob is located at the initial position, as shown in fig. 9, the cam 120 is pressed on the contact 160, so that the circuit of the switch element 16 is broken; as shown in fig. 10, another cam 120 is pressed on the top bar 140 to break the water path; the cam 120 and the knob 122 are coaxially rotated on the mounting base 10, when the knob assembly is integrally rotated to a first position, the two cams 120 are rotated by a first angle from an initial position, so that the push rod 140 for controlling the on-off of the water valve 14 is released by the cam 120 in fig. 6 to connect the water path, and after the first angle is rotated, the contact 160 for connecting the on-off circuit of the switch piece 16 is released by the rotation of the cam 120 in fig. 5 to connect the circuit.

The switch 16 may be a normally open switch, and when the contact 160 is connected, the switch 16 is closed to connect the circuit.

Preferably, the rotation axis 126 is perpendicular to the mounting base 10.

As shown in fig. 2 and 3, in the above embodiment, the knob assembly specifically includes: the rotating bracket 124 is fixedly arranged on the mounting base 10, and a rotating hole is formed in the rotating bracket 124; the rotating shaft 126 is disposed in the rotating hole, the cam 120 is disposed on a side of the rotating shaft 126 close to the mounting base 10, and the knob 122 is disposed on a side of the rotating shaft 126 far from the mounting base 10.

In this embodiment, the rotation shaft 126 is provided to facilitate connection between the knob 122 and the cam 120, so that the cam 120 can rotate synchronously with the rotation of the knob 122 to drive the push rod 140 to connect the waterway, and such a structure is simple and easy to maintain.

Specifically, the knob assembly includes a rotation bracket provided with a rotation hole and a rotation shaft 126 provided in the rotation hole, the rotation bracket provides support for the rotation shaft 126 while limiting the degree of freedom of the rotation shaft 126 in the radial direction, and when the rotation shaft 126 is mounted to the rotation hole, it can only rotate by itself to ensure stable operation. In addition, the cam 120 is arranged on one side of the rotating shaft 126 close to the mounting base 10, so that the distance between the cam 120 and the bottom of the mounting base 10 is reduced as much as possible, the moment of breaking possibly caused by the self weight of the cam 120 when shaking occurs is reduced, and the stability in the using process is improved.

In the above embodiment, the switch assembly further includes: and a limiting part provided on the mounting base 10 for limiting a rotation angle of the cam 120.

In this embodiment, the rotation angle of the cam 120 is limited by the limiting portion, and the rotation angle of the cam 120 can be guaranteed to accurately reach the first angle, so that the push rod 140 is effectively driven to connect the waterway, the working stability and reliability of the switch assembly are guaranteed, and the use convenience of the switch assembly is improved.

As shown in fig. 11 and 12, in the above embodiment, the circumferential direction of the rotating shaft 126 is provided with the groove 1260, and the limiting portion specifically includes: the side plate 180 is fixedly arranged on the mounting base 10; the elastic limiting member, as shown in fig. 2, includes an elastic member 182 connected to the side plate 180 and a protrusion 184 disposed at one end of the elastic member 182, wherein the elastic member 182 stores elastic potential energy during the rotation of the knob assembly, and the protrusion 184 is engaged with the groove 1260 when the knob assembly rotates to the first position.

In this embodiment, when the knob assembly is rotated to the first position, the protrusion 184 is engaged with the groove 1260, so that the knob assembly stops rotating, the cam 120 stops rotating accordingly, and the first angle is reached, thereby accurately driving the push rod 140 to open the water valve 14 to connect the water path, and the mechanical structure is simple in operation, stable in operation and less in failure; the elastic limiting piece is used for limiting, so that the knob assembly can be reversely rotated to disconnect the waterway when the waterway is not required to be connected, the operation is simple, the elastic limiting piece is used for limiting, the knob assembly is easy to sense by a user when reaching a limiting position in the rotating process, and the use convenience of the switch assembly is improved; the side plate 180 is convenient for the elastic member 182 to abut against, and then the elastic member 182 can clamp the protrusion 184 in the groove 1260 by using elastic force.

It can be understood that, since the groove 1260 is disposed on the circumference of the rotation shaft 126, and the rotation shaft 126 is fixed on the mounting base 10, that is, the axis of the rotation shaft 126 is perpendicular to the mounting base 10, the arrangement of the elastic stopper is facilitated by disposing a side plate 180 on the rotation path, and the stop of the knob assembly is also facilitated.

Alternatively, the elastic member may be any one of a spring, and a plastic sheet, wherein, when a spring is used, the protrusion 184 may not be provided.

Alternatively, the convex portion 184 is any one of a ball, a cylinder, and an ellipsoid.

In the above embodiment, the number of the grooves 1260 is two, and the grooves 1260 are symmetrically disposed on the circumference of the rotating shaft 126, wherein when the knob assembly is at the initial position, the two grooves 1260 are disposed on two sides of the protrusion 184, respectively, when the knob assembly is rotated to the first position along the first direction, the protrusion 184 is engaged with one of the two grooves 1260, and when the knob assembly is rotated to the second position along the second direction, the protrusion 184 is engaged with the other of the two grooves 1260.

In this embodiment, two grooves 1260 are respectively disposed on two sides of the protruding portion 184, so that the two grooves 1260 respectively limit the position of the cam 120, that is, the two grooves 1260 limit the operating position of the knob assembly, and the knob 122 is not stopped at any position of the rotation angle range, thereby ensuring the reliability of the operating state; and two symmetrical grooves 1260 are arranged, so that the operation of a user is facilitated, and the waterway channel is opened to the maximum extent.

It will be appreciated that the two grooves 1260 are symmetrically disposed around the circumference of the rotating shaft 126, i.e., at an angle of 180 degrees to the axis of the rotating shaft 126, and the two grooves 1260 are symmetrically disposed, thereby facilitating assembly by the installer.

In the above embodiment, as shown in fig. 4, 8 and 13, the number of the grooves 1260 is two, and two grooves 1260 are adjacently disposed in the circumferential direction of the rotating shaft 126, wherein, as shown in fig. 8, one of the two grooves 1260 is engaged with the protrusion 184 when the knob assembly is in the initial position, and as shown in fig. 4, the protrusion 184 is engaged with the other of the two grooves 1260 when the knob assembly is rotated to the first position along the first direction.

In this embodiment, by directly engaging the protrusion 184 with one of the two grooves 1260 at the initial position, when the user needs to communicate the circuit and the waterway at the same time, the user only needs to rotate the knob assembly in the first direction to the first position, and the communication between the circuit and the waterway can be realized by engaging with the other groove 1260, so that the protrusion can be disengaged from the groove 1260 at the initial position and engaged into the groove 1260 at the first position with a distinct vibration sense, thereby prompting the user and ensuring that the knob assembly is rotated to the position.

It should be noted that the two grooves 1260 are adjacently disposed on the circumference of the rotating shaft 126, so that the distance between the two grooves 1260 can be shortened, the time for the knob assembly to rotate from the initial position to the first position can be shortened, and the working efficiency can be improved.

In the above embodiment, the number of the grooves 1260 is multiple, the shape of the protrusion 184 is matched with the shape of each groove 1260, and when the protrusion 184 is clamped in one of the grooves 1260, the circuit and the waterway corresponding to the flow rate are opened.

In this embodiment, the number of the grooves 1260 is set to be a plurality of, and when the protruding portion 184 is clamped in one of the grooves 1260, the circuit and the water path corresponding to the flow rate are opened, so that a plurality of different working positions are defined, and therefore the protruding portion 184 can be rotated to different grooves 1260 according to different water requirements of users to use the water path and the circuit with different flow rates, so that when the diversified requirements of the users are met, water resources and power resources can be saved, and waste is reduced.

In any of the above embodiments, the plunger 140 and the contact 160 are disposed on both sides of the knob assembly, and the cam 120 is provided with two protrusions, one of which drives the plunger 140 to move to close the waterway and the other of which cooperates with the switch member 16 to close the circuit when the knob assembly is rotated to the first position.

In this embodiment, two protrusions are provided on the cam 120, so that the two protrusions can move synchronously with the cam 120, so that while one protrusion drives the push rod 140 to open the waterway, the other protrusion can cooperate with the switch member 16 to close the circuit, thereby ensuring the synchronization of the waterway opening and the circuit opening.

As shown in fig. 5 and 6, in any of the above embodiments, the number of the cams 120 is two, each cam 120 is provided with one protrusion, and the two cams 120 are coaxially arranged; when the knob assembly is rotated to the first position, as shown in fig. 6, one of the two cams 120 drives movement of the ram 140 to complete the waterway, as shown in fig. 5, and the other cooperates with the switch member 16 to complete the circuit.

In this embodiment, the two coaxial cams 120 are arranged so that the protrusions provided on each cam 120 can move synchronously with the rotation of the rotating shaft 126, so that while one protrusion drives the push rod 140 to open the waterway, the other protrusion can cooperate with the switch member 16 to open the circuit, thereby ensuring the synchronization of the waterway opening and the circuit opening.

It should be noted that in fig. 6, the cam 120 drives the ram 140 by releasing the ram 140 to move the ram outward to connect the waterway. In fig. 5, the cam 120 is engaged with the switch member 16 to complete the circuit by releasing the contact 160.

In any of the above embodiments, the switch member 16 is a microswitch, and the switch assembly further comprises: the switch bracket is fixedly arranged on the mounting base 10, and the microswitch is arranged on the switch bracket.

In this embodiment, locate the micro-gap switch on the switch support, be favorable to providing stable support for micro-gap switch, make micro-gap switch can not take place to shift when leaning on by the bulge to can guarantee that the circuit breaks off smoothly and remain stable, promote the stability and the reliability of switch module work, and micro-gap switch's sensitivity is high, and occupation space is little.

Embodiments of the second aspect of the present invention provide a water heater including the switch assembly of any one of the embodiments of the first aspect.

In this embodiment, by using the switch assembly of any one of the above embodiments, all the advantages of the above embodiments are achieved, and details are not described herein.

According to the switch assembly provided by the embodiment of the invention, the switch assembly is perfectly combined with the water heater, the knob assembly is arranged ON the control panel of the water heater, a user only needs to rotate the knob assembly, the knob assembly is internally provided with a limit position, meanwhile, the position of ON-OFF is provided with a marble (namely the convex part 184) limit position, the hand feeling can be enhanced, simultaneously, the water heater can be disconnected from an incoming line power supply and the water inlet state, all functions are controlled by adopting a mechanical physical structure, the reliability is extremely high, and the switch assembly can provide a very convenient control mode and reliable safety protection measures for the user.

As shown in fig. 2 to fig. 6, specifically, the switch assembly of the present embodiment is a knob structure, a double cam 120 structure is driven by a rotating shaft 126 to form a linkage control system, a fixed structure carrier of the switch assembly is a mounting base 10, the mounting base 10 can be used as an internal equivalent structure of a base of a water heater, the knob assembly is composed of a rotating bracket 124, a rotating shaft 126, a knob 122, a cover plate 128, two side plates 180 at left and right sides, a spring (i.e. an elastic member 182), a ball (i.e. a protrusion 184), and two cams 120 coaxially arranged on the rotating shaft 126, the rotating shaft 126 is inserted into the rotating bracket 124, the cover plate 128 is fixed on the rotating bracket 124 by screw locking, one side plate 180 is fixed at left side by a snap-in manner, the ball and the spring are placed into the side plate 180 at right side, the side plate 180 at right side is fixed by the snap, the cam 120 is embedded into the square shaft handle below the rotating shaft 126 to form a complete knob assembly, at the moment, the knob assembly is fixed on the mounting base 10 through a screw through hole of the rotating bracket 124 by screw locking, the micro switch (namely, the switch piece 16) is fixed on the side plate 180 on the left side of the knob 122 by screws, and the water valve 14 is fixed on the mounting base 10 by screws, so that a knob type switch assembly for cutting off water and power is formed, and the switch assembly can be integrated into the structural design of the whole water heater, so that the water heater has the function of rotating the knob 122 to cut off water and power.

As shown in fig. 7 to 10, further, the knob 122 rotates clockwise to a first limit angle, which is an OFF state, and is a water-cut and power-OFF operating state, at this time, as shown in fig. 10, the push rod 140 of the water valve 14 is pressed by one cam 120 to cut OFF the water of the water valve 14, as shown in fig. 9, the contact 160 of the switch element 16 is pressed by the other cam 120 to power OFF.

As shown in fig. 3 to 6, the knob 122 rotates counterclockwise to a second limit angle, which is a water-conducting and power-ON working state, i.e., an ON state; in the rotating process of the knob 122, due to the fact that the elastic piece 182 and the ball bearings are used for limiting, the knob 122 can have obvious hand feeling, a user can conveniently sense the working state of the knob 122 in place, the knob is convenient and easy to operate, the limiting structure formed by the elastic piece and the ball bearings can limit the working gear of the knob 122, the knob 122 cannot stop at any position in the range of the rotating angle, and the reliability of the working state is guaranteed.

More specifically, the switch assembly is a linkage mechanism consisting of a knob assembly, a water valve 14 and a micro switch (a switch piece 16):

1. the water valve 14 is locked and fixed on the mounting base 10 by screws; the water valve 14 is a normally open valve, as shown in fig. 10, a cam 120 presses on the push rod 140 of the water valve 14, the push rod 140 is in a water-cut-off state when pressed, as shown in fig. 6, the push rod 140 is released, and at this time, the water valve 14 is in a water-passing state;

2. the micro switch is fixed on the left side plate 180 by screw locking, the micro switch is a normally closed contact 160, as shown in fig. 9, the contact 160 is pressed by the cam 120, and at this time, the power-off state is realized; as shown in fig. 5, the contact 160 is released by the cam 120 and the switch member is in the energized state;

3. the knob assembly is inserted into the rotating bracket 124 through the rotating shaft 126, the cover plate 128 is fixed on the rotating bracket 124 through screw locking, the left side plate 180 is clamped and fixed on the mounting base 10, the spring and the ball are placed into the right side plate 180, the right side plate 180 is clamped and fixed on the mounting base 10, the knob 122 is sleeved on the rotating handle above the rotating shaft 126, and the cam 120 is embedded below the rotating shaft 126, so that a complete knob assembly is formed;

4. the ball elastic limiting structure (namely a limiting part) is used for placing the spring in the spring hole of the right side plate 180, then placing the ball against the spring, and clamping and fixing the right side plate 180 by the right side of the knob 122, so that the ball, the spring and the groove 1260 on the rotating shaft 126 form the ball elastic limiting mechanism;

5. the knob 122 drives the rotating shaft 126 to rotate, the cam 120 is connected below the rotating shaft 126, the cam 120 is of a double-cam structure, and can link the micro switch and the push rod 140 of the water valve 14, as shown in fig. 4 and 8, when the knob 122 rotates clockwise, so that the rotating shaft 126 rotates from the position shown in fig. 4 to the position shown in fig. 8, that is, when the first elastic limit is reached, the ball is embedded into the groove 1260 of the rotating shaft 126, as shown in fig. 9 and 10, at this time, the double convex points of the cam 120 respectively press the contact 160 of the micro switch and the push rod 140 of the water valve 14, that is, the contact 160 of the switch element 16 is pressed and disconnected, the switch element 16 is in a power-off state, the valve port of the water valve 14 is in a power-off state due to the press; when the knob 122 rotates counterclockwise to rotate the rotating shaft from the position shown in fig. 7 to the position shown in the figure, that is, to reach the second elastic limit, as shown in fig. 4, the balls will continue to be embedded into another groove 1260 of the rotating shaft 126, at this time, as shown in fig. 5 and 6, the double convex points of the cam 120 will release the contact 160 of the micro switch and the plunger 140 of the water valve 14, that is, the contact 160 of the micro switch is connected to the power-on state, the valve port of the water valve 14 is released to the power-on state, and this process is also a linkage and works simultaneously.

Through the design of the invention, the rotary knob 122 rotates clockwise and anticlockwise within a limit angle, the microswitch is triggered to be in linkage control with the water valve 14 through the double-cam structure below the rotating shaft 126, meanwhile, the rotary position of the knob 122 has elastic limit, so that the knob has better hand feeling to prompt a user, the knob 122 is ensured to have only two limit positions and cannot stay at any position within the range of the rotating angle to misguide the user, and the switch component synchronously realizes two working states of water supply and power on or water supply and power off through the clockwise and anticlockwise rotation control of the knob 122; simultaneously, the function realized by the switch assembly ensures that the instantaneous water heater has more reliable safety, and the control characteristic of the instantaneous water heater is manual knob operation, so that a user has more convenient control and safer experience, and the safety and the convenience of the use of the switch assembly are improved.

The technical scheme of the invention is described in detail in combination with the attached drawings, through the technical scheme of the invention, the connection of the water path and the circuit is effectively and synchronously carried out, the waste of resources is reduced, the electric power is saved, and the mechanical structure is adopted, so that the operation is simple, and the work is stable and reliable.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch assembly, comprising:

a knob assembly including a cam and a knob that rotate coaxially about a rotational axis;

the water valve comprises a mandril for controlling the switch of the water valve;

a switch member including a contact for controlling the on/off circuit of the switch member,

when the knob assembly rotates to a first position, the cam rotates by a first angle, the ejector rod is driven by the cam to connect the waterway, and the contact is communicated to connect the circuit.

2. The switch assembly of claim 1, wherein the knob assembly specifically comprises:

the rotary bracket is internally provided with a rotary hole;

the rotating shaft is arranged in the rotating hole, the cam is arranged on one side of the rotating shaft, and the knob is arranged on the other side of the rotating shaft.

3. The switch assembly of claim 2, further comprising:

the knob assembly, the water valve and the switch piece are all arranged on the mounting base, and the cam is arranged on one side of the rotating shaft close to the mounting base;

and the limiting part is arranged on the mounting base and used for limiting the rotating angle of the cam.

4. The switch assembly according to claim 3, wherein a groove is formed in the circumferential direction of the rotating shaft, and the limiting portion specifically comprises:

the side plate is fixedly arranged on the mounting base;

an elastic limiting part which comprises an elastic part connected with the side plate and a convex part arranged at one end of the elastic part,

when the knob assembly rotates to the first position, the protruding portion is clamped in the groove.

5. The switch assembly according to claim 4, wherein the number of the grooves is two, and the grooves are symmetrically arranged in the circumferential direction of the rotating shaft,

when the knob assembly rotates to the first position along the first direction, the lug bosses are clamped in the two grooves, and when the knob assembly rotates to the second position along the second direction, the lug bosses are clamped in the two grooves.

6. The switch assembly of claim 4, wherein the number of the grooves is two, two of the grooves are adjacently disposed in a circumferential direction of the rotating shaft,

when the knob assembly is at an initial position, one of the two grooves is connected with the protruding portion in a clamped mode, and when the knob assembly rotates to a first position along a first direction, the protruding portion is connected with the other of the two grooves in the clamped mode.

7. The switch assembly of claim 4, wherein the number of the grooves is plural, the shape of the protrusion is adapted to the shape of each of the grooves, and when the protrusion is engaged with one of the grooves, the circuit and the waterway are opened corresponding to the flow rate.

8. The switch assembly of any one of claims 1 to 7, wherein the plunger and the contact are disposed on opposite sides of the knob assembly, and the cam has two protrusions, one of the two protrusions driving the plunger to move to close the waterway and the other cooperating with the switch member to close the circuit when the knob assembly is rotated to the first position.

9. The switch assembly according to any one of claims 1 to 7, wherein the number of the cams is two, one protrusion is provided on each cam, and the two cams are coaxially arranged, when the knob assembly is rotated to the first position, one of the two cams drives the plunger to move to close the waterway, and the other cam abuts against the switch member to close the circuit.

10. The switch assembly of any one of claims 1 to 7, wherein the switch member is a micro switch, the switch assembly further comprising:

the switch bracket is fixedly arranged on the mounting base, and the microswitch is arranged on the switch bracket.

11. A water heater, comprising: the switch assembly of any one of claims 1 to 10.