CN216118550U - Waterproof knob subassembly and domestic appliance - Google Patents

Abstract

The utility model is applicable to the field of knobs, and provides a waterproof knob assembly, which comprises: the knob comprises a knob body, wherein a magnetic induction element is arranged in the knob body; the mounting seat is provided with a mounting groove, and the knob body is rotatably embedded in the mounting groove; and the rotation detection device is arranged on one side of the mounting groove, which is deviated from the knob body, and corresponds to the magnetic induction element. The utility model also provides a household appliance. According to the utility model, the rotation detection device is arranged on the back surface of the mounting groove and is spaced from the knob body, the mounting seat realizes the mutually independent arrangement of the knob body and the rotation detection device, the induction of the magnetic induction element and the rotation detection device realizes the control function, the knob body is positioned outside the mounting seat and is convenient for a user to control, the rotation detection device is used as an electronic device and is mounted in the mounting seat and isolated from the external environment, the waterproof and moistureproof capabilities are improved, the higher waterproof and moistureproof requirements can be met, and the application of a product with a waterproof knob assembly in a more humid environment is realized.

Description

Waterproof knob subassembly and domestic appliance

Technical Field

The utility model belongs to the technical field of knobs, and particularly relates to a waterproof knob assembly and a household appliance.

Background

At present, a plurality of household electrical appliances adopt knobs to realize function switching, gear selection and the like of the household electrical appliances, the existing knob waterproof schemes mainly comprise a mechanical type and an induction type, the mechanical type knobs generally adopt encoders or reset switches to realize control on the household electrical appliances, and the mechanical type knobs are low in cost and are popular in the market compared with the induction type knobs.

Electronic components such as the encoder and the reset switch are electrified components, generally, the electronic components cannot be wetted and damp, otherwise, the electronic components may be short-circuited to cause abnormal functions and even cause safety problems. Due to structural limitation, the conventional glue filling mode cannot be used for enhancing the waterproof performance of the encoder, the reset switch and other electronic components. The current mechanical type knob is generally come the drainage through setting up the slot, but this kind of waterproof construction of slot can not avoid the invasion of moisture, also is difficult to solve the risk that water spills over into electronic components and parts when the water yield is more, is difficult to use in the product that requires higher to waterproof.

SUMMERY OF THE UTILITY MODEL

The utility model provides a waterproof knob assembly, aiming at solving the technical problems that the existing mechanical knob has poor waterproof effect and is difficult to be applied to products with high waterproof requirements.

The present invention is thus achieved, a waterproof knob assembly comprising:

the knob comprises a knob body, wherein a magnetic induction element is arranged in the knob body;

the knob comprises a mounting seat, a knob body and a fixing piece, wherein a mounting groove is formed on the mounting seat, and the knob body is rotatably embedded in the mounting groove; and

and the rotation detection device is arranged on one side of the mounting groove, which deviates from the knob body, and corresponds to the magnetic induction element.

Furthermore, the knob body comprises an operation part and an embedding part connected with the operation part, the magnetic induction element is embedded in the embedding part, the embedding part is embedded in the mounting groove, and the operation part is exposed out of the mounting groove.

Furthermore, a damping structure is arranged on the inner peripheral wall of the mounting groove, and a contact elastic sheet matched with the damping structure is arranged on the outer wall of the embedding part.

Further, the cross-sectional area of the operating part is larger than that of the mounting groove.

Furthermore, an anti-skid structure is arranged on the outer wall of the operating part.

Furthermore, a clamping bulge is formed in the mounting groove, a clamping flange is formed on the embedding part, and the clamping flange is clamped between the clamping bulge and the bottom wall of the mounting groove, so that the embedding part is clamped and embedded in the mounting groove.

Furthermore, the top surface of the operation part is provided with a positioning mark, and the surface of the mounting seat is provided with a gear mark.

Furthermore, the rotation detection device comprises a circuit board and a detection element arranged on the circuit board, wherein the detection element corresponds to the magnetic induction element.

Further, the detection element is a hall sensor.

The present invention also provides a home appliance, comprising:

a housing; and

the waterproof knob assembly of any one of the above claims, wherein the mounting seat is embedded in the housing, and the rotation detection device is located in the housing.

The waterproof knob assembly has the advantages that the rotation detection device is arranged on the back surface of the mounting groove and is spaced from the knob body, the knob body and the rotation detection device are arranged independently through the mounting seat, the induction between the magnetic induction element and the rotation detection device realizes the control function of the waterproof knob assembly, the knob body is positioned outside the mounting seat so as to be convenient for a user to operate, the rotation detection device is used as an electronic device and is arranged in the mounting seat in an isolated mode so as to be isolated from the external environment, the waterproof and moistureproof capabilities of the waterproof knob assembly are improved, higher waterproof and moistureproof requirements can be met, and the application of a product with the waterproof knob assembly in a more humid environment is realized.

Drawings

FIG. 1 is a schematic exploded perspective view of a waterproof knob assembly provided by the present invention;

FIG. 2 is a further exploded perspective view of the waterproof knob assembly provided by the present invention;

FIG. 3 is a schematic perspective view of a waterproof knob assembly provided by the present invention;

FIG. 4 is a further perspective view of the waterproof knob assembly provided by the present invention;

FIG. 5 is a schematic cross-sectional view of the waterproof knob assembly shown in FIG. 3 in the V-V direction;

FIG. 6 is a schematic perspective view of a waterproof knob assembly provided by the present invention;

FIG. 7 is a further perspective view of the waterproof knob assembly provided by the present invention;

fig. 8 is a schematic diagram of a detection circuit of the rotation detection device provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The existing household products are usually controlled by a mechanical knob, the mechanical knob generally adopts an encoder or a reset switch to realize the control of the household products, electronic components such as the encoder and the reset switch are electrified parts, generally speaking, the electronic components cannot be wetted, otherwise, the electronic components can be abnormal in function due to short circuit, even cause safety problems, and are difficult to apply to products with higher waterproof requirements.

Among this technical scheme, the knob body is located outside the mount pad so that the user controls, rotates detection device and then keeps apart to install in order to keep apart with external environment as electron device in the mount pad, has promoted waterproof and moisture-proof ability of waterproof knob subassembly effectively.

Example one

Referring to fig. 1 to 5, the waterproof knob assembly 10 of the present invention includes a knob body 11, a mounting seat 12 and a rotation detection device 13, wherein a magnetic induction element 14 is disposed in the knob body 11, a mounting groove 121 is formed on the mounting seat 12, the knob body 11 is rotatably embedded in the mounting groove 121, and the rotation detection device 13 is disposed on a side of the mounting groove 121 away from the knob body 11 and corresponds to the magnetic induction element 14.

In the waterproof knob assembly 10, the rotation detection device 13 is arranged on the back of the mounting groove 121 and is spaced from the knob body 11, the knob body 11 and the rotation detection device 13 are arranged independently through the mounting seat 12, the induction between the magnetic induction element 14 and the rotation detection device 13 realizes the control function of the waterproof knob assembly 10, the knob body 11 is positioned outside the mounting seat 12 so as to be convenient for a user to operate, the rotation detection device 13 is used as an electronic device and is installed in the mounting seat 12 in an isolated mode so as to be isolated from the external environment, the waterproof and moistureproof capabilities of the waterproof knob assembly 10 are improved, higher waterproof and moistureproof requirements can be met, and the application of a product with the waterproof knob assembly 10 in a more humid environment is realized.

Specifically, the knob body 11 is a portion for a user to operate in the waterproof knob assembly 10 of this embodiment, when the user rotates the knob body 11, the knob body 11 can rotate in the mounting groove 121 under the restriction of the mounting groove 121, and simultaneously, the magnetic induction element 14 in the knob body 11 is driven to rotate relative to the rotation detection device 13, so that a magnetic field between the knob body and the rotation detection device changes, and the rotation detection device 13 can further determine the rotation angle and the direction of the knob body 11 according to the change of the magnetic field, and transmit the rotation angle and the direction to the household appliance equipped with the waterproof knob assembly 10, so that the household appliance performs a corresponding action and realizes a corresponding function.

In the present embodiment, the sensing surface of the magnetic sensing element 14 faces the bottom of the mounting groove 121 and corresponds to the rotation detection device 13 located on the back of the mounting groove 121 to establish magnetic induction between the magnetic sensing element 14 and the rotation detection device 13, and the rotation detection device 13 can detect the rotation direction and the rotation angle of the knob body 11 when the knob body rotates based on the position change of the sensing surface.

More, one side of the mounting groove 121 away from the knob body 11 is further provided with a positioning portion 125, that is, the back of the mounting seat 12 is further provided with a positioning portion 125, the positioning portion 125 is in a fixed shape and encloses a positioning space, a portion of the rotation detection device 13, which is sensed by the magnetic sensing element 14, is accommodated in the positioning space, and the positioning portion 125 enables the rotation detection device 13 and the magnetic sensing element 14 to be aligned more accurately, so as to improve the sensing accuracy therebetween. The positioning portion 125 may be rectangular, square, annular, or other shapes that enclose a space, and the shape of the positioning portion 125 is not specifically limited, and the rotation detection device 13 may be positioned.

In one embodiment, the waterproof knob assembly 10 and the housing can be combined to form an operation panel, the operation panel can be box-shaped, when the operation panel is required to be applied to the household appliance, the operation panel including the waterproof knob assembly 10 and integrated with the operation panel is directly adapted to the household appliance, and then the rotation detection assembly 13 is structurally connected with a power supply, a controller and the like of the household appliance, so that the knob control function of the waterproof knob assembly 10 can be realized, and the installation and the application of the waterproof knob assembly 10 are facilitated.

In one embodiment, the mounting base 12 may be made of plastic.

Specifically, the plastic can be made into various shapes to be matched with the knob body 11, and the plastic product is low in price, has better strength and hardness, can effectively prevent water and moisture, ensures the waterproof and moisture-proof capabilities of the made mounting seat 12, and further improves the waterproof and moisture-proof capabilities of the waterproof knob assembly 10.

Of course, in other embodiments, the material of the mounting base 12 is not limited to the above-mentioned plastic, and the mounting base 12 may be made of other suitable materials, which may be selected in specific implementation.

Example two

Further, referring to fig. 1 to 4, the knob body 11 includes an operation portion 111 and an embedding portion 112 connected to the operation portion 111, the magnetic induction element 14 is embedded in the embedding portion 112, the embedding portion 112 is embedded in the mounting groove 121, and the operation portion 111 is exposed out of the mounting groove 121.

Specifically, please continue to combine fig. 6 and fig. 7, the knob body 11 includes an operation portion 111 at the upper end and an embedding portion 112 at the lower end, the operation portion 111 is a portion of the knob body 11 for being touched by a user, and is also a portion that is more likely to contact with external water vapor, and is exposed outside the mounting groove 121 for being operated by the user, the magnetic induction element 14 is embedded in and fixed to the embedding portion 112, and is embedded in the mounting groove 121 together with the embedding portion 112, so as to be opposite to the rotation detection device 13 at the back of the mounting groove 121 and generate magnetic induction, and the embedding portion 112 can also reduce the influence of the water vapor on the magnetic induction element 14.

When the user rotates the operation portion 111, the operation portion 111 drives the embedded portion 112 to rotate in the mounting groove 121, the magnetic induction element 14 rotates together with the embedded portion 112, magnetic induction between the magnetic induction element and the rotation detection device 13 is changed, and the rotation detection device 13 further outputs the detected rotation angle and rotation direction of the knob body 11 (the embedded portion 112 and the magnetic induction element 14) to the household appliance, so that the corresponding function of the household appliance is realized.

In this embodiment, the operating portion 111 is formed by sleeving the zinc alloy housing 113 on the upper end surface of the knob body 11, the inside of the operating portion 111 can be made of plastic, and the insertion portion 112 is also made of plastic.

For example, firstly, the basic structure of the knob body 11 may be integrally formed by using a plastic material, and the knob body 11 having the basic structure made of plastic has better overall waterproof performance and low price, which is beneficial to controlling the production cost of the waterproof knob assembly 10.

Then, the zinc alloy housing 113 is sleeved on the upper end of the knob body 11, that is, the upper end of the knob body 11 sleeved with the zinc alloy housing 113 is the operating portion 111 of the present embodiment, and the lower end of the knob body 11 not sleeved with the zinc alloy housing 113 is the embedding portion 112, so that the zinc alloy housing 113 can further improve the waterproof performance, strength and hardness of the operating portion 111, and ensure the service life of the knob body 11. Between the zinc alloy shell 113 and the upper end of the knob body 11, the fixing and installation between the two can be simply and effectively realized through fixing modes such as clamping fixation, thread fixation, fixing part fixation and the like.

In other embodiments, the operation portion 111 can be flush with the opening of the installation slot 121, or even be located in the installation slot 121 to meet different application requirements of the waterproof knob assembly 10. The position of the operation portion 111 relative to the mounting groove 121 is not particularly limited, and the operation portion 111 can be conveniently operated by a user.

EXAMPLE III

Further, with reference to fig. 1 and fig. 4, a damping structure 122 is disposed on an inner peripheral wall of the mounting groove 121, and a contact spring 114 engaged with the damping structure 122 is disposed on an outer wall of the embedding portion 112.

Specifically, damping structure 122 sets up on the internal perisporium of mounting groove 121 and cooperatees with contact shell fragment 114 on the embedding part 112 outer wall, contact shell fragment 114 and damping structure 122 contact each other, can strengthen the frictional force between knob body 11 and the mounting groove 121, when the user rotates knob body 11, embedding part 112 drives contact shell fragment 114 and damping structure 122 rotation contact, can give the certain retardant sense of user, promote user's operation and feel, avoid the user because there is not obvious control sense when operating knob body 11, and be difficult to accurately control the rotation range, lead to being difficult to accurately choose for use the problem of domestic appliance's function.

It is worth mentioning that:

the damping structures 122 can be continuously distributed on the inner peripheral wall of the mounting groove 121, when a user rotates the knob body 11 to any position relative to the mounting groove 121, the blocking feedback when the contact elastic sheet 114 and the damping structures 122 are in contact rotation can be obtained, in a use scene of the waterproof knob assembly 10, the user rotates the knob body 11 to gradually increase or decrease the strength of a certain function of the household appliance, and the knob body 11 can continuously give the blocking feedback to the user within the whole adjustable strength of the function;

the damping structure 122 may also be discontinuously distributed on the inner peripheral wall of the mounting groove 121, when the user rotates the knob body 11 to a set position relative to the mounting groove 121, the blocking feedback when the contact elastic sheet 114 and the damping structure 122 are in contact rotation can be obtained, in a use scene of the waterproof knob assembly 10, the user rotates the knob body 11 to switch different functions of the household appliance, and the knob body 11 is only subjected to the blocking feedback when being switched to the previous function or the next function. By providing the damping structure 122 in a specific form, a greater variety of feedback is provided to the user, meeting different application requirements for the waterproof knob assembly 10.

In one embodiment, the damping structure 122 may be a texture formed on the inner peripheral wall of the mounting groove 121 or other structures such as a protrusion with damping effect, which can realize a retarding effect on the embedding portion 112 (the knob body 11), and the structure is also simple, easy to produce and manufacture, and the damping structure 122 is formed on the inner peripheral wall of the mounting seat 12 integrally when the mounting seat 12 is manufactured.

In one embodiment, the contact spring piece 114 may be a metal spring piece or a plastic spring piece protruding from the outer wall of the embedding portion 112 to the inner peripheral wall (the damping structure 122) of the mounting groove 121, the protrusion of the contact spring piece 114 to the inner peripheral wall of the mounting groove 121 can improve the matching degree with the damping structure 122, and the contact spring piece 114 has certain strength and elasticity, and is not easily damaged when being continuously in rotational contact with the damping structure 122, thereby ensuring the normal use and the service life of the waterproof knob assembly 10.

In this embodiment, the damping structure 122 is the dentate lines that are continuously distributed along the inner peripheral wall of the mounting groove 121, the contact elastic sheet 114 is a plastic elastic sheet, the surfaces of the damping structure 122 and the contact elastic sheet 114 are smooth surfaces, and the contact cooperation between the contact elastic sheet 114 and the dentate lines enables the knob body 11 to avoid influencing the user experience due to the situations that the rotation of the knob body 11 is not smooth or the required rotation force is large, while giving the user certain retardation feedback.

Example four

Further, referring to fig. 1 to 5, the cross-sectional area of the operation portion 111 is larger than that of the mounting groove 121.

Specifically, because the operation portion 111 is the position that exposes to the external world in the waterproof knob subassembly 10, the position that most easily contacts with steam, in this embodiment, through setting up the cross-sectional area of operation portion 111 to be greater than the cross-sectional area of mounting groove 121, so, the lower limb of operation portion 111 can cover, the upper limb of laminating mounting groove 121, operation portion 111 can cover promptly, seal the gap between mounting groove 121 and the embedding part 112, both reducible steam gets into in the mounting groove 121, reduce the influence of steam to inner structure such as embedding part 112, magnetic induction element 14 and mounting groove 121, also can avoid debris to get into in the mounting groove 121 and lead to knob body 11 jamming or rotate not smooth scheduling problem.

EXAMPLE five

Further, an outer wall of the operation portion 111 is provided with a slip-proof structure.

It can be appreciated that since the waterproof knob assembly 10 is applied in a wet, watery environment, when the outer wall of the operating portion 111 is contaminated with water or grease, or when the user's hand is contaminated with water or grease, it may be difficult for the user to effectively operate the waterproof knob assembly 10.

Therefore, in the present embodiment, by providing the anti-slip structure on the outer wall of the operation portion 111, the friction force between the user's hand and the operation portion 111 can be increased, and even in the above-mentioned situation, the user can control the operation portion 111 more effectively to operate the waterproof knob assembly 10. And, the friction provided by the anti-slip structure also helps the user to detach the knob body 11 from the mounting groove 121.

In one embodiment, the anti-slip structure may be a structure that can increase the friction between the hand of the user and the operation portion 111, such as anti-slip lines, anti-slip grooves, and anti-slip protrusions, which are formed by directly processing the outer wall of the operation portion 111, and the purpose of increasing the friction can be achieved without additionally arranging the relevant structure on the outer wall of the operation portion 111.

In another embodiment, the anti-slip structure may also be a structure sleeved on the outer wall of the operation portion 111 and having anti-slip lines, anti-slip grooves, anti-slip protrusions, etc. to improve the friction between the hand of the user and the operation portion 111, and it is not necessary to process the anti-slip structure more, and when the anti-slip structure is worn more, the anti-slip structure is directly replaced with a new one.

The specific structure and the specific arrangement form of the anti-skid structure are not specifically limited, and an appropriate anti-skid structure may be selected in an actual embodiment.

EXAMPLE six

Furthermore, referring to fig. 5 to 7, an engaging protrusion 123 is formed in the mounting groove 121, an engaging flange 115 is formed on the embedding portion 112, and the engaging flange 115 is engaged between the engaging protrusion 123 and the bottom wall of the mounting groove 121, so that the embedding portion 112 is engaged and embedded in the mounting groove 121.

Specifically, the fitting of the fitting portion 112 (knob body 11) to the fitting groove 121 is simply and effectively achieved by the snap-fit engagement of the snap projections 123 with the snap flanges 115. In this embodiment, a plurality of gaps are opened on the embedding portion 112, so that the embedding portion 112 can contract inward by a certain extent when being subjected to external pressure, when the waterproof knob assembly 10 is assembled, the embedding portion 112 is aligned to the mounting groove 121, then pressure to the mounting groove 121 is applied to the operating portion 111, the embedding portion 112 contracts inward by a certain extent under the restriction of the mounting groove 121 to be embedded into the mounting groove 121, and then returns to the original shape to restrict the position relationship between itself and the mounting groove 121, at this time, the engaging protrusion 123 is engaged with the engaging flange 115, or the second engaging groove is engaged with the second engaging protrusion, so that the knob body 11 is mounted in the mounting groove 121.

When the waterproof knob assembly 10 is disassembled, a user applies an outward pulling force to the operation part 111, the embedding part 112 contracts inward to a certain extent to be separated from the mounting groove 121 under the action of the pulling force and the limitation of the matching of the clamping protrusion 123, and meanwhile, the clamping protrusion 123 is separated from the clamping flange 115, so that the knob body 11 is disassembled from the mounting groove 121.

In one embodiment, the plurality of engaging protrusions 123 and the plurality of engaging flanges 115 are disposed at the bottom of the inner peripheral wall of the mounting groove 121 or the bottom of the outer peripheral wall of the insertion portion 112, and the plurality of engaging protrusions 123 and the plurality of engaging flanges 115 are disposed at corresponding positions, so that when the user rotates the operating portion 111, the insertion portion 112 rotates relative to the mounting groove 121 under the restriction of the plurality of engaging protrusions 123 on the plurality of engaging flanges 115, and the stability between the two is high, thereby preventing the knob body 11 from separating from the mounting seat 12.

In another embodiment, the engaging protrusions 123 and the engaging flanges 115 may be annularly distributed on the bottom of the inner peripheral wall of the mounting groove 121/the bottom of the outer peripheral wall of the embedding portion 112, so as to further improve the overall stability of the waterproof knob assembly 10 when the engaging protrusions 123 and the engaging flanges 115 are engaged with each other.

In this embodiment, the number of the engaging protrusions 123 is 2, and the 2 engaging protrusions 123 are oppositely disposed on the bottom of the inner wall of the mounting groove 121, so that the structure of the mounting groove 121 can be simplified on the premise of ensuring the limiting effect on the engaging flange 115 and ensuring the relatively stable engagement between the mounting groove 121 and the embedding portion 112.

EXAMPLE seven

Furthermore, the top surface of the operation portion 111 is provided with an alignment mark, and the surface of the mounting seat 12 is provided with a gear mark.

Specifically, when the user rotates the operation portion 111, the alignment mark located on the top surface of the operation portion 111 may indicate the amplitude of the user when rotating the knob body 11, and the gear mark located on the surface of the mounting seat 12 may indicate the function or function intensity of the household appliance corresponding to the user rotation knob body 11, so that the user may accurately control the household appliance to a desired function or function intensity by rotating the operation portion 111 (knob body 11), thereby improving user experience.

In one embodiment, the surface of the operating portion 111 and/or the surface of the mounting seat 12 may be further provided with a rotation direction prompting mark to further prompt the user to perform an accurate operation on the operating portion 111.

Example eight

Further, referring to fig. 1 to 5, the rotation detecting device 13 includes a circuit board 131 and a detecting element 132 disposed on the circuit board 131, wherein the detecting element 132 corresponds to the magnetic induction element 14.

Specifically, when the rotation detection device 13 is installed, the detection element 132 is located in the positioning portion 125 and corresponds to the magnetic induction element 14 and establishes magnetic induction, the circuit board 131 is located below the mounting base 12, the circuit board 131 is a bearing structure of the detection element 132 and is used for realizing electrical supply and electrical connection of the detection element 132, the rotation detection device 13 further includes a processor (such as a single chip microcomputer) connected with the detection element 132 and located in the household appliance, and the processor is used for receiving a magnetic induction change signal between the detection element 132 and the magnetic induction element 14, so that the household appliance performs corresponding actions.

When the detection element 132 detects the rotation direction and the rotation angle of the magnetic induction element 14 rotating along with the knob body 11, the detected rotation direction and rotation angle are converted into related data or signals to be transmitted to the processor, if the processor is only used as a processing control center of the waterproof knob assembly 10, the processor processes the related data or signals and then sends the processed data or signals to the controller of the household appliance, the controller controls the household appliance to a corresponding function or function intensity, and if the processor is used as the processing control center of the whole household appliance at the same time, the processor directly controls the household appliance to the corresponding function or function intensity.

The connection mode and the data (signal) transmission process of the detection element 132 and the processor are mature technologies in the field, and the connection mode between the detection element 132 and the processor is not specifically limited, and the selection is performed on the basis of ensuring the normal transmission of data (signal) between the detection element 132 and the processor.

Fig. 8 is a schematic diagram of a detection circuit of the rotation detection device 13 of the present embodiment, and the detection circuit is not described in detail herein since it does not relate to the main points of the embodiment of the present invention.

Example nine

Further, the detecting element 132 is a hall sensor.

Specifically, the hall sensor has the advantages of sensitivity to a magnetic field, simple structure, small volume, wide frequency response, large output voltage change, long service life and the like, can better establish magnetic induction with the magnetic induction element 14, and effectively detect the rotation change of the magnetic induction element 14 along with the knob body 11.

Example ten

Referring to fig. 1 to 5, the present invention also provides a household appliance, which includes:

a housing; and

in the waterproof knob assembly 10 according to any of the above embodiments, the mounting seat 12 is embedded in the housing, and the rotation detecting device 13 is located in the housing.

In the household appliance provided by the embodiment of the utility model, the household appliance comprises a waterproof knob assembly 10 arranged on a shell, a rotation detection device 13 is arranged on the back surface of a mounting groove 121 in the knob assembly 10 and is spaced from a knob body 11, the knob body 11 and the rotation detection device 13 are arranged independently from each other through a mounting seat 12, the control function of the waterproof knob assembly 10 is realized through the induction between a magnetic induction element 14 and the rotation detection device 13, the knob body 11 is positioned outside the mounting seat 12 so as to be convenient for a user to operate, the rotation detection device 13 is used as an electronic device and is installed in the mounting seat 12 in an isolated manner so as to be isolated from the external environment, the waterproof and moistureproof capability of the waterproof knob assembly 10 is improved, the higher waterproof and moistureproof requirements can be met, and the application of a product with the waterproof knob assembly 10 in a more humid environment is realized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. A water resistant knob assembly, comprising:

the knob comprises a knob body, wherein a magnetic induction element is arranged in the knob body;

the knob comprises a mounting seat, a knob body and a fixing piece, wherein a mounting groove is formed on the mounting seat, and the knob body is rotatably embedded in the mounting groove; and

and the rotation detection device is arranged on one side of the mounting groove, which deviates from the knob body, and corresponds to the magnetic induction element.

2. The waterproof knob assembly according to claim 1, wherein the knob body includes an operating portion and an insertion portion connected to the operating portion, the magnetic induction element is inserted into the insertion portion, the insertion portion is inserted into the mounting groove, and the operating portion is exposed outside the mounting groove.

3. The waterproof knob assembly according to claim 2, wherein a damping structure is provided on an inner circumferential wall of the mounting groove, and a contact spring plate engaged with the damping structure is provided on an outer wall of the insertion portion.

4. The waterproof knob assembly according to claim 2, wherein a cross-sectional area of the operating portion is larger than a cross-sectional area of the mounting groove.

5. The waterproof knob assembly according to claim 2, wherein an outer wall of the operating portion is provided with a slip prevention structure.

6. The waterproof knob assembly according to claim 2, wherein a locking protrusion is formed in the mounting groove, and a locking flange is formed on the insertion portion and locked between the locking protrusion and the bottom wall of the mounting groove, so that the insertion portion is locked and inserted in the mounting groove.

7. The waterproof knob assembly according to claim 2, wherein the top surface of the operating portion is provided with an alignment mark, and the surface of the mounting seat is provided with a gear mark.

8. The waterproof knob assembly according to claim 1, wherein the rotation detecting means includes a circuit board and a detecting element disposed on the circuit board, the detecting element corresponding to the magnetic induction element.

9. The watertight knob assembly according to claim 8, characterized in that the detection element is a hall sensor.

10. A household appliance, characterized in that it comprises:

a housing; and

the waterproof knob assembly according to any one of claims 1 to 9, wherein the mounting seat is embedded in the housing, and the rotation detecting means is located in the housing.

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