CN210489491U

CN210489491U - Knob assembly for household appliance

Info

Publication number: CN210489491U
Application number: CN201921400880.6U
Authority: CN
Inventors: 陈连珀
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-05-08
Anticipated expiration: 2029-08-27

Abstract

The utility model provides a knob subassembly for domestic appliance, it includes knob and control division, knob and control division are located the relative outside and inboard of domestic appliance's panel respectively, the knob includes base, knob shell and knob chassis, the base passes the knob chassis, the inner chamber of base is equipped with at least a set of first magnetic element that magnetizes opposite direction, the control division is equipped with at least a set of second magnetic element that attracts the location with first magnetic element each other, the knob chassis is equipped with a plurality of through-holes, the control division electricity is connected with rotation detection mechanism; the inner side of the knob chassis is connected with a third magnetic element, and the control part is electrically connected with a magnetic detection mechanism corresponding to the third magnetic element. The utility model discloses can solve current domestic appliance's mechanical knob make the panel take place to seep water and be difficult to clear problem to and touch-control formula button causes the problem that children and old person mistake touched and the moisture or the greasy dirt of finger cause mistake input signal easily.

Description

Knob assembly for household appliance

Technical Field

The utility model relates to a life electrical apparatus field especially relates to a knob subassembly for domestic appliance.

Background

At present, the traditional way for controlling the fire of a gas stove is to arrange a mechanical knob on the stove or use a touch control type key to allow a user to manually rotate to adjust the fire, and for the operation way of controlling the fire by rotating the mechanical knob, the fire is directly controlled by rotating the mechanical knob in operation, the operation hand feeling is better, but the existing mechanical knob causes the panel to be permeated with water and is not easy to clean; for controlling firepower by a touch key, many children and old people are not used to various complicated operations of touch control, or the condition of mistakenly inputting signals is caused due to moisture or oil stains on the hands of users, so that dangerous accidents of mistaken starting are caused.

Disclosure of Invention

Based on this, the utility model aims to provide a knob subassembly for domestic appliance to solve prior art's domestic appliance's mechanical knob and make the panel take place the infiltration and be difficult to clear problem, and a lot of toddlers and old person are not used to various loaded down with trivial details operations of touch-control, perhaps have moisture or greasy dirt etc. to cause the problem of wrong input signal because of the user is in hand.

The technical scheme of the utility model is that: a knob assembly for a home appliance, comprising a knob and a control part, which are located at an outer side and an inner side of a panel of the home appliance, respectively, the knob comprises a base, a knob shell and a knob chassis, the knob chassis is connected with the knob shell to form a mounting cavity between the knob shell and the knob chassis, one end of the base is arranged in the mounting cavity, the other end of the base penetrates through the knob chassis, the inner cavity of the base is provided with at least one group of first magnetic elements with opposite magnetizing directions, the control part is provided with at least one group of second magnetic elements which are mutually attracted and positioned with the first magnetic elements, the knob chassis is provided with a plurality of through holes arranged at intervals, and the control part is electrically connected with a rotation detection mechanism for detecting the rotation state of the knob shell and the knob chassis;

the inner side of the knob chassis is connected with a third magnetic element, the control part is electrically connected with a magnetic detection mechanism corresponding to the third magnetic element, and the magnetic detection mechanism is used for detecting the pressing states of the knob shell and the knob chassis.

Optionally, the rotation detection mechanism includes at least two optical couplers corresponding to the through holes, and an included angle between two adjacent optical couplers is not equal to an included angle between two adjacent through holes.

Optionally, the magnetic detection mechanism includes at least two magnetic detection elements, and a plurality of the magnetic detection elements are arranged at intervals in the circumferential array of the control portion.

Optionally, the knob housing is connected to the base through an elastic device, the elastic device includes a bearing, an elastic member and a plurality of steel balls disposed at intervals on the bearing, an annular sliding groove is disposed at the top of the knob housing, two ends of the steel balls are respectively abutted to the sliding groove and the bearing, and two ends of the elastic member are respectively connected to the bearing and the base.

Optionally, the control portion is electrically connected with a magnetic sensor for sensing whether the knob is separated from the panel.

Optionally, the base includes a first supporting portion and a second supporting portion integrally formed with the first supporting portion, the first magnetic element is disposed on the first supporting portion, and the first supporting portion penetrates through the knob chassis;

the second supporting part is connected with the knob shell through the elastic device.

Optionally, two opposite sides of the second support portion are respectively provided with a limiting device for limiting the bearing to rotate relative to the second support portion.

Optionally, the limiting device comprises two first limiting blocks, and a limiting groove is arranged between the two first limiting blocks;

two second limiting blocks are arranged on two opposite sides of the bearing respectively, the second limiting blocks are inserted into the limiting grooves, and the width of each second limiting block is equal to that of each limiting groove.

Optionally, the first magnetic element may be a radially magnetized ring magnet, and the second magnetic element may be a radially magnetized ring magnet.

Optionally, when the first magnetic element and the second magnetic element are both hollow ring magnets, the control portion is electrically connected with an infrared emitter, and the infrared emitter is inserted into an inner cavity of the second magnetic element;

the bearing is equipped with the first light trap that infrared emitter corresponds, the knob shell be equipped with the second light trap that first light trap corresponds, the internal surface of second light trap is the refraction face.

Implement the embodiment of the utility model provides a, following beneficial effect has:

the utility model discloses a knob subassembly for domestic appliance, through being equipped with at least a set of first magnetic element who magnetizes opposite direction at the inner chamber of base, the control part is equipped with at least a set of second magnetic element, because first magnetic element and second magnetic element attract each other, thereby can install knob and control part in the specific mounted position department of panel, and first magnetic element and second magnetic element can make the base can not rotate at will, and then guaranteed that the mounted position of knob on the panel is fixed, avoid the knob and the relative position of the mark utensil of panel to take place the dislocation;

by arranging the third magnetic element and the magnetic detection mechanism, when a target appliance needs to be started, a user presses the knob shell, the knob shell drives the knob base to move towards the direction close to the control part, the magnetic detection mechanism senses the approach of the knob, then the user marks the direction towards the driven appliance to enable the knob shell to incline, the magnetic detection mechanism senses the enhancement of the magnetic coefficient of the corresponding direction, the control part sends out a signal for controlling the target appliance to be started, and starts to start the selected appliance, and the arrangement has the advantage of safe operation, so that the situation that the mistaken input signal is caused by the mistaken touch of a child and the old is prevented;

the rotary knob chassis is provided with a plurality of through holes which are arranged at intervals, the control part is electrically connected with the rotation detection mechanism, the rotation detection mechanism can detect the rotation state of the rotary knob shell and the rotary knob chassis, the magnetic detection mechanism senses the magnetic force coefficient of the third magnetic element, and the panel does not need to be provided with holes for installing the rotary knob, so that the household appliance has the advantages of moisture resistance and electric leakage prevention;

by arranging at least one group of first magnetic elements and at least one group of second magnetic elements, the knob can be easily taken away by a user due to the mutual attraction of the first magnetic elements and the second magnetic elements, so that the panel can be conveniently cleaned by the user;

therefore, the utility model discloses a knob subassembly for domestic appliance not only has dampproofing, leak protection and the advantage of being convenient for clean panel, but also can prevent that child and old person from missing touch and have moisture or greasy dirt because of the user on hand and miss input signal's advantage to certain popularization nature has.

Drawings

Fig. 1 is a schematic structural diagram of the knob assembly of the present invention.

Fig. 2 is a schematic structural diagram of a knob assembly according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a knob assembly according to a first embodiment of the present invention, when a knob housing is in an inclined state.

Fig. 4 is a schematic structural diagram of a knob assembly according to a first embodiment of the present invention when a knob housing is in a rotating state.

Fig. 5 is a top view of a knob assembly according to a first embodiment of the present invention.

Fig. 6 is a schematic view of the rotation detecting mechanism according to the first embodiment of the present invention detecting the forward/reverse rotation of the knob and the number of pulses.

Fig. 7 is a schematic structural diagram of the first embodiment of the present invention in which the knob and the control portion are separated from each other.

Fig. 8 is a schematic structural diagram of a third magnetic element, a detection element, a position sensor, and a third electromagnetic element according to a first embodiment of the present invention.

Fig. 9 is a schematic view of a connection structure between the base and the limiting device according to the first embodiment of the present invention.

Fig. 10 is a schematic structural view of a knob assembly according to a second embodiment of the present invention.

Description of reference numerals:

1. a knob housing; 2. a knob chassis; 3. a base; 31. a first support section; 32. a second support portion; 4. A first magnetic element; 5. a second magnetic element; 6. a control unit; 61. a main controller; 62. a control circuit board; 7. a through hole; 8. a third magnetic element; 9. an optical coupler; 10. a magnetic detection element; 11. an elastic device; 111. a bearing; 112. an elastic member; 113. a ball bearing; 12. a magnetic inductor; 13. a limiting device; 131. a first stopper; 132. a limiting groove; 14. an infrared emitter; 15. a first light-transmitting hole; 16. a second light-transmitting hole; 18. a panel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", 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 device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The first embodiment is as follows:

as shown in fig. 1 to 9, a knob assembly for a household appliance according to a first embodiment of the present invention includes a knob and a control portion 6, the knob and the control portion 6 are respectively located at an outer side and an inner side of a panel 1 of the household appliance, the knob includes a base 3, a knob housing 1 and a knob chassis 2, the knob housing 1 and the knob chassis 2 are connected to form a mounting cavity between the knob housing 1 and the knob chassis 2, one end of the base 3 is inserted into the mounting cavity, the other end of the base 3 passes through the knob chassis 2, the knob housing 1 is connected to the base 3 through an elastic device 11, an inner cavity of the base 3 is provided with at least one set of first magnetic elements 4 with opposite magnetizing directions, the control portion 6 is provided with at least one set of second magnetic elements 5 mutually attracting and positioning the first magnetic elements 4, the knob chassis 2 is provided with a plurality of through holes 7 arranged at intervals, the control part 6 is electrically connected with a rotation detection mechanism for detecting the rotation state of the knob shell 1 and the knob chassis 2;

the inner side of the knob chassis 2 is connected with a third magnetic element 8, and the control part 6 is electrically connected with a magnetic detection mechanism corresponding to the third magnetic element 8, wherein the magnetic detection mechanism is used for detecting the pressing state of the knob shell 1 and the knob chassis 2.

Based on the above arrangement, the utility model discloses a knob subassembly for domestic appliance, through being equipped with at least a set of first magnetic element 4 that magnetizes opposite direction at the inner chamber of base 3, control portion 6 is equipped with at least a set of second magnetic element 5, because first magnetic element 4 and second magnetic element 5 attract each other, thereby can install knob and control portion 6 in panel 18 specific mounted position department, and first magnetic element 4 and second magnetic element 5 can make base 3 can not rotate at will, and then guaranteed that the mounted position of knob on the panel is fixed, avoid the relative position of the mark utensil of knob and panel to take place the dislocation;

by arranging the elastic device 11, the third magnetic element 8 and the magnetic detection mechanism, when a target appliance needs to be started, a user presses the knob shell 1, the elastic device 11 is in a compressed state, the knob shell 1 drives the knob base to move towards the direction close to the control part 6, the magnetic detection mechanism senses the approach of the knob, then the user marks the direction towards the driven appliance to enable the knob shell 1 to incline, the magnetic detection mechanism senses the enhancement of the magnetic coefficient of the corresponding direction, the control part 6 sends out a signal for controlling the target appliance to be started and starts to start the selected appliance, and the arrangement has the advantage of safe operation, so that the situation that the child and the old touch by mistake to cause the wrong input of the signal is prevented;

through arranging a plurality of through holes 7 arranged at intervals on the knob chassis 2, the control part 6 is electrically connected with a rotation detection mechanism, the rotation detection mechanism can detect the rotation state of the knob shell 1 and the knob chassis 2, the magnetic detection mechanism induces the magnetic force coefficient of the third magnetic element 8, and the panel 1 does not need to be provided with holes for installing a knob, so that the household appliance has the advantages of moisture resistance and electric leakage prevention;

by arranging at least one group of first magnetic elements 4 and at least one group of second magnetic elements 5, the knob can be easily taken away by a user due to the mutual attraction of the first magnetic elements 4 and the second magnetic elements 5, so that the panel can be conveniently cleaned by the user;

In this embodiment, as shown in fig. 1 to 9, in order to facilitate the rotation detection mechanism to detect the rotation states of the knob housing 1 and the knob chassis 2, the rotation detection mechanism includes at least two optical couplers 9 corresponding to the through holes 7, and an included angle between two adjacent optical couplers 9 is not equal to an included angle between two adjacent through holes 7. Specifically, the knob chassis 2 in this embodiment is provided with six through holes 7 arranged at intervals, when a user needs to perform fire power, temperature or timing on a target appliance, the user presses the knob housing 1 and then rotates the knob housing 1, and the optical couplers 9 can detect the through holes 7 arranged on the knob chassis 2, wherein the two optical couplers 9 can distinguish the difference of a clockwise rotation or anticlockwise rotation logic switch of the knob chassis 2, and calculate the number of pulses of scanned holes, so that the user can be judged to increase or decrease the adjustment amount, and the control part 6 can judge the adjustment amount of the fire power, the temperature or the timing according to the rotation amount of the knob housing 1 by the user, thereby preventing the occurrence of danger caused by the fact that the stove is played by moisture or children and old people at will be prevented;

preferably, six through holes 7 are provided on the inner edge of the knob chassis 2 at equiangular intervals.

In the present embodiment, as shown in fig. 1 to 9, the third magnetic element 8 is a ring-shaped magnetic body.

In this embodiment, as shown in fig. 1 to 9, the knob chassis 2 is fastened to the knob housing 1, so as to enhance the fastening between the knob chassis 2 and the knob housing 1.

In this embodiment, as shown in fig. 1 to 9, the magnetic detection mechanism includes at least two magnetic detection elements 10, a plurality of magnetic detection elements 10 are circumferentially arranged in an array at intervals on the control portion 6, wherein, the magnetic detection mechanism of the embodiment of the utility model comprises four magnetic detection elements 10, the four magnetic detection elements 10 are arranged at the control part 6 at intervals in a circumferential array, wherein each magnetic detection element 10 induces the magnetic field of the third magnetic element 8, each magnetic element corresponding to each target oven, when the user drives the knob housing 1 to move toward the control portion 6, the user then tilts the knob housing 1 toward the direction of the driving instrument, the corresponding magnetic detecting element 10 senses the corresponding enhancement of the magnetic force coefficient, further, the corresponding magnetic detecting element 10 can send a signal to the control unit 6, and the control unit 6 controls the start of the target oven.

In this embodiment, as shown in fig. 1 to 9, in order to facilitate the resetting of the knob housing 1 and the knob chassis 2, the knob housing 1 is connected to the base 3 through the elastic device 11, the elastic device 11 includes a bearing 111, an elastic member 112 and a plurality of steel balls 113 disposed at the bearing 111 at intervals, an annular sliding groove is disposed at the top of the knob housing 1, two ends of the steel balls 113 are respectively abutted to the sliding groove and the bearing 111, and two ends of the elastic member 112 are respectively connected to the bearing 111 and the base 3. Specifically, by providing the elastic member 112, when the start of the target oven and the adjustment of the heating power of the target oven are required, the knob housing 1 needs to be pressed, the elastic member 112 is in a compressed state, and the knob base 2 moves in a direction approaching the control unit 6 along the base 3; when the knob shell 1 and the knob chassis 2 are required to be restored, the elastic piece 112 is in a release state, the knob chassis 2 moves along the base 3 in the direction away from the control part 6, and the knob shell 1 moves in the direction away from the control part 6;

through the arrangement of the steel balls 113, the steel balls 113 can reduce the friction coefficient between the knob shell 1 and the bearing 111, so that the knob shell 1 can move relative to the control part 6 more conveniently;

through setting up elastic component 112, elastic component 112 can realize the automatic re-setting of knob shell 1, and elastic component 112 is the spring.

In the present embodiment, as shown in fig. 1 to 9, the control portion 6 is electrically connected to a magnetic sensor 12 for sensing whether the knob is separated from the panel 18, wherein the magnetic sensor 12 is a magnetic sensing tube, when the knob is separated from the panel 18, a magnetic field of the magnetic sensor 12 changes, magnetic field strengths of the rotation detection mechanism and the magnetic detection mechanism also change, and the control portion 6 can delay a period of time to turn off the target appliance, thereby preventing an unsafe accident caused by not finding the knob in case of operation.

In this embodiment, as shown in fig. 1 to 9, in order to facilitate the connection between the knob housing 1 and the base 3 and the connection between the knob chassis 2 and the base 3, the base 3 includes a first supporting portion 31 and a second supporting portion 32 integrally formed with the first supporting portion 31, the two first magnetic elements 4 are disposed on the first supporting portion 31, and the first supporting portion 31 penetrates through the knob chassis 2;

the second support portion 32 is connected to the knob housing 1 by the elastic means 11. Specifically, the first supporting portion 31 can provide a supporting force for placing the first magnetic element 4, and the second supporting portion 32 can provide a supporting force for placing the elastic member 112.

In this embodiment, as shown in fig. 1 to 9, the two opposite sides of the second supporting portion 32 are respectively provided with a limiting device 13 for limiting the rotation of the bearing 111 relative to the second supporting portion 32, so that when the user rotates the knob housing 1, the base 3 and the elastic device 11 will not rotate relative to the knob housing 1.

In this embodiment, as shown in fig. 9, the limiting device 13 includes two first limiting blocks 131, and a limiting groove 132 is disposed between the two first limiting blocks 131;

two second limiting blocks 17 are respectively arranged on two opposite sides of the bearing 111, the second limiting blocks 17 are inserted into the limiting grooves 132, the width of the second limiting blocks 17 is equal to that of the limiting grooves 132, and the second limiting blocks 17 can move in the limiting grooves 132, so that the knob shell 1 can slide relative to the control part 6 conveniently; every two limiting blocks can limit the rotation of the bearing 111.

In this embodiment, as shown in fig. 1 to 8, the first magnetic element 4 and the second magnetic element 5 may be radially magnetized ring magnets, so that the first magnetic element 4 and the second magnetic element 5 have different magnetic correspondences.

In this embodiment, as shown in fig. 1 to 8, the control portion 6 includes a main controller 61 and a control circuit board 62, the control circuit board 62 is electrically connected to the main controller 61, and the magnetic detection mechanism, the rotation detection mechanism and the magnetic sensor 12 are all electrically connected to the control circuit board 62, so that the main controller 61 can receive signals detected by the magnetic detection mechanism, the rotation detection mechanism and the magnetic sensor 12, and further the working condition of the target appliance can be controlled.

In this embodiment, as shown in fig. 1 to 8, a display panel is connected to the outer side of the panel 18, and the display panel can display the operating condition of the main controller 61, so that even if a user wipes the panel 18 with cloth with water, the signal is not mistakenly input.

Example two:

the second embodiment of the present invention is different from the first embodiment in that, in the second embodiment, as shown in fig. 1 and 10, when the first magnetic element 4 and the second magnetic element 5 are both ring magnets of hollow ring magnets, the control portion 6 is electrically connected to the infrared emitter 14, and the infrared emitter 14 is inserted into the inner cavity of the second magnetic element 5;

bearing 111 is equipped with the first light trap 15 that corresponds with infrared emitter 14, knob shell 1 is equipped with the second light trap 16 that corresponds with first light trap 15, the internal surface of second light trap 16 is the refraction face, wherein, the infrared ray of infrared emitter 14 transmission passes through second magnetic element 5, panel 18, first magnetic element 4 and bearing 111 shine knob shell 1, after the refraction face of knob shell 1 is shone to the infrared ray, the infrared ray passes the infrared receiver who jets the range hood on the stove, thereby can play the effect of linkage.

To sum up, the utility model discloses a knob subassembly for domestic appliance not only has dampproofing, leak protection and the advantage of being convenient for clean panel, but also can prevent that child and old person from missing touch and have moisture or greasy dirt because of the user on hand and mistake input signal's advantage to certain popularization nature has.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the principle of the present invention, and these modifications and variations are also considered as the protection scope of the present invention.

Claims

1. A knob assembly for a household appliance, characterized by comprising a knob and a control part, the knob and the control part are respectively positioned at the outer side and the inner side of the panel of the household appliance, the knob comprises a base, a knob shell and a knob chassis, the knob chassis is connected with the knob shell to form a mounting cavity between the knob shell and the knob chassis, one end of the base is arranged in the mounting cavity, the other end of the base penetrates through the knob chassis, the inner cavity of the base is provided with at least one group of first magnetic elements with opposite magnetizing directions, the control part is provided with at least one group of second magnetic elements which are mutually attracted and positioned with the first magnetic elements, the knob chassis is provided with a plurality of through holes arranged at intervals, and the control part is electrically connected with a rotation detection mechanism for detecting the rotation state of the knob shell and the knob chassis;

2. The knob assembly for electric home appliances according to claim 1, wherein the rotation detecting mechanism includes at least two photo-couplers corresponding to the through holes, and an included angle between adjacent two photo-couplers is not equal to an included angle between adjacent two through holes.

3. The knob assembly for electric home appliances according to claim 2, wherein the magnetism detection mechanism includes at least two magnetism detection elements, and a plurality of the magnetism detection elements are disposed at intervals in a circumferential array on the control part.

4. The knob assembly for household appliances according to claim 3, wherein the knob housing is connected to the base through an elastic device, the elastic device includes a bearing, an elastic member and a plurality of steel balls spaced from the bearing, an annular sliding groove is formed in the top of the knob housing, two ends of the steel ball are respectively abutted against the sliding groove and the bearing, and two ends of the elastic member are respectively connected to the bearing and the base.

5. The knob assembly for electric home appliances according to claim 3, wherein the control portion is electrically connected with a magnetic inductor for inducing whether the knob is separated from the panel.

6. The knob assembly for electric home appliances according to claim 4, wherein the base includes a first support portion and a second support portion integrally formed with the first support portion, two of the first magnetic members are provided to the first support portion, and the first support portion passes through the knob chassis;

7. The knob assembly for electric home appliances according to claim 6, wherein the second support portion is provided at opposite sides thereof with a limiting means for limiting the rotation of the bearing with respect to the second support portion, respectively.

8. The knob assembly for electric home appliances according to claim 7, wherein the limiting means comprises two first limiting blocks, between which a limiting groove is provided;

9. The knob assembly for a household appliance according to claim 4, wherein the first magnetic element is a radially magnetized ring magnet and the second magnetic element is a radially magnetized ring magnet.

10. The knob assembly for electric home appliances according to claim 4, wherein when the first magnetic element and the second magnetic element are both hollow ring magnets, the control portion is electrically connected with an infrared emitter inserted in an inner cavity of the second magnetic element;