CN217718527U - Knob mechanism and household appliance - Google Patents

Abstract

The application provides a knob mechanism and domestic appliance, knob mechanism is including installing the axle, knob subassembly and gear drive subassembly, the knob subassembly includes knob and knob decoration, the knob rotationally encircles the installation axle and sets up, knob decoration fixed connection is in the installation axle, the gear drive subassembly includes first drive gear and second drive gear, first drive gear and second drive gear meshing, the knob is connected with first drive gear transmission, the rotation of knob drives first drive gear and rotates, and then drive second drive gear rotates. The application provides a knob mechanism, knob mechanism pass through the gear drive subassembly with treat that the driving piece transmission cooperates, the knob can drive through the gear drive subassembly at rotatory in-process and treat that the driving piece realizes steady rotation, simultaneously, the knob decoration can keep static for the knob, guarantees the stability of the sign of knob decoration at the knob by rotatory in-process, does benefit to the position state of the sign that keeps the knob decoration.

Description

Knob mechanism and household appliance

Technical Field

The application relates to the technical field of household appliances, in particular to a knob mechanism and a household appliance.

Background

Most of the current household appliances usually include a knob mechanism, the knob mechanism is used for being in transmission fit with a timer and a temperature controller waiting driving piece of the household appliance, for example, a user can adjust the timing time of the timer of the air fryer through the knob mechanism, and when the timing of the timer is over, the air fryer can automatically finish the cooking of food.

The knob of the knob mechanism of current majority waits for the driving piece to be direct-connected structure with the timer usually, is unfavorable for steady transmission, can be provided with signs such as pattern, logo usually on the knob moreover to supply the user to observe, but the knob of knob mechanism also can take the sign to rotate together when rotatory, and the position state of sign can change like this, for example, after the knob is rotatory certain angle, the sign can take place to stand upside down, is unfavorable for the user to observe like this.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a knob mechanism and a household appliance, so as to improve at least one technical problem.

The embodiments of the present application achieve the above object by the following means.

In a first aspect, the present application embodiment provides a knob mechanism, including the installation axle, knob subassembly and gear drive subassembly, the knob subassembly includes knob and knob decoration, the knob rotationally encircles the installation axle and sets up, knob decoration fixed connection is in the installation axle, the gear drive subassembly includes first drive gear and second drive gear, first drive gear and second drive gear meshing, the knob is connected with first drive gear transmission, the rotation of knob drives first drive gear and rotates, and then drive second drive gear rotates.

In a second aspect, the embodiment of the present application further provides a household appliance, the household appliance includes a machine body, a to-be-driven member and the knob mechanism, the mounting shaft is fixedly connected to the machine body, the knob decoration and at least a part of the knob are exposed outside the machine body, and the second transmission gear is in transmission fit with the to-be-driven member.

The utility model provides a knob mechanism and domestic appliance, knob mechanism passes through the gear drive subassembly and treats the driving piece (e.g., the timer, temperature controller etc.) transmission cooperation, the knob can drive through the gear drive subassembly at rotatory in-process and treats the driving piece and realize steady rotation, guarantee driven reliability, and simultaneously, the knob decoration can remain static for the knob, guarantee the stability of the sign of knob decoration at the knob by the rotation in-process, do benefit to the position state of the sign that keeps the knob decoration, the position stability of the sign of knob decoration has been realized effectively, the reliability of design element has been guaranteed, the risk of can't expressing the design intention after having avoided rotating because of the sign.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 shows a schematic structural diagram of a household appliance provided in an embodiment of the present application in an assembled state.

Fig. 2 shows a schematic structural diagram of the household appliance shown in fig. 1 in a disassembled state.

Fig. 3 shows a schematic longitudinal cross-sectional view of the household appliance shown in fig. 1.

Fig. 4 is a schematic structural diagram of the knob mechanism in the household appliance shown in fig. 1 in a disassembled state.

Fig. 5 shows a schematic partial cross-sectional view of the household appliance shown in fig. 1.

Detailed Description

In order to make the technical solution better understood by those skilled in the art, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 1 and fig. 2 together, an embodiment of the present application provides a household appliance 20, in which the household appliance 20 includes a machine body 21, a member to be driven 22, and a knob mechanism 10, and the knob mechanism 10 is disposed on the machine body 21 and is in transmission fit with the member to be driven 22. The household appliance 20 may be an air fryer, an electric oven or an electric cooker, etc., and the to-be-driven member 22 may be a timer, a temperature controller, etc. For example, the member to be driven 22 may be a timer, the knob mechanism 10 is connected to a timing shaft of the timer, and a timing length of the timer is adjustable by the knob mechanism 10. For another example, the member to be driven 22 may also be a thermostat, and the knob mechanism 10 is connected to the thermostat, so that the temperature of the thermostat can be adjusted by the knob mechanism 10.

In the following, the household appliance 20 is an air fryer and the member to be driven 22 is a timer, for example, and the cooking time of the air fryer can be adjusted by the knob mechanism 10.

Specifically, referring to fig. 1 to 3, in the present embodiment, the body 21 may include a main housing 211 and a surface cover 212, the surface cover 212 is mounted on the main housing 211, a mounting cavity 213 is disposed between the surface cover 212 and the main housing 211, the mounting cavity 213 is used for mounting the knob mechanism 10, and the surface cover 212 and the main housing 211 may be detachably connected, for example, detachably connected by a snap-fit, a fastener, and the like.

In this embodiment, the main housing 211 may be provided with a cooking cavity (not shown), the household electrical appliance 20 may further include a blower 291 and a heating element 292, the heating element 292 may be a heating pipe or the like, the blower 291 may be a fan or the like, the heating element 292 may heat air, and the heated air may be blown into the cooking cavity through the blower 291 to cook food in the cooking cavity.

Further, in some embodiments, the surface cover 212 may further be provided with a receiving portion 2121, the receiving portion 2121 may be formed by an outer wall of the surface cover 212 being recessed, the receiving portion 2121 is communicated with the mounting cavity 213, and the receiving portion 2121 may be used to receive a portion of the structure of the knob mechanism 10.

Referring to fig. 2 and 3, in the present embodiment, the knob mechanism 10 includes a mounting shaft 11, a knob assembly 12, and a gear assembly 13. The knob assembly 12 includes a knob 122 and a knob garnish 121, the knob 122 is rotatably disposed around the mounting shaft 11, and the knob 122 is rotatable with respect to the mounting shaft 11 with the mounting shaft 11 as a rotation center. The knob garnish 121 is fixedly attached to the mounting shaft 11.

In the present embodiment, the mounting shaft 11 is fixedly connected to the machine body 21, and specifically, the mounting shaft 11 is fixedly connected to the main housing 211. The knob decoration 121 and at least a portion of the knob 122 are exposed outside the body 21.

In some embodiments, as shown in fig. 4 and 5, the mounting shaft 11 includes a main shaft body 111, a first limiting portion 112 and a second limiting portion 113, the first limiting portion 112 and the second limiting portion 113 are respectively connected to two ends of the main shaft body 111, the second limiting portion 113 can be in stop fit with the main housing 211, and the second limiting portion 113 and the main housing 211 can be in stop fit by means of plugging, clamping, and the like. The knob decoration 121 is provided with a stop portion 1211 engaged with the first position-limiting portion 112 in a stop manner, the stop portion 1211 may be a stop groove, the first position-limiting portion 112 may be a cylinder structure adapted to the shape of the stop groove, for example, the first position-limiting portion 112 may be a polygonal cylinder structure (for example, a triangle or a quadrangle), or the first position-limiting portion 112 may include a cylinder and a groove or a rib provided on an outer wall of the cylinder, and the shape of the stop groove is adapted to the structure of the first position-limiting portion 112.

In the present embodiment, the knob decoration 121 and at least a portion of the knob 122 are exposed out of the cover 212, and the member to be driven 22 is mounted on the main housing 211. The knob decoration 121 may protect and decorate the knob 122, and may be made of metal, plastic material or a combination of metal and plastic.

In this embodiment, the face cover 212 may be provided with a fitting hole 2122, the fitting hole 2122 communicates with the mounting cavity 213, the mounting shaft 11 may be disposed substantially along an axial direction of the fitting hole 2122, one end of the mounting shaft 11 is located in the mounting cavity 213 and fixedly connected to the main housing 211, and the other end protrudes out of the fitting hole 2122 through the fitting hole 2122.

In the present embodiment, the knob 122 and the knob decoration 121 are both located outside the mounting hole 2122, the knob 122 is substantially in a ring structure, such as a ring shape or an oval ring shape, the knob 122 surrounds a portion of the mounting shaft 11 extending out of the mounting hole 2122, and the knob 122 can rotate relative to the mounting shaft 11 with the mounting shaft 11 as a rotation center.

When the cover 212 is provided with the receiving portion 2121, the receiving portion 2121 may communicate with the mounting cavity 213 through the mounting hole 2122, and the knob 122 may be partially received in the receiving portion 2121, so that the knob 122 may utilize a part of the space of the receiving portion 2121, thereby preventing the knob 122 from excessively protruding out of the cover 212, and reducing the external volume of the product.

Referring to fig. 2 and fig. 4, in the present embodiment, the knob 122 includes an inner wall 1221, the inner wall 1221 encloses a mounting through hole 1222, the mounting shaft 11 is disposed in the mounting through hole 1222, and specifically, an end of the mounting shaft 11 extending out of the mounting hole 2122 penetrates through the mounting through hole 1222, and the end may penetrate through the mounting through hole 1222 or be located in the mounting through hole 1222. The knob 122 includes a knob end surface 1223, and the knob end surface 1223 is located on a side of the knob 122 facing away from the face cover 212. The knob 122 may be provided with a non-slip portion (not shown) on the exterior, for example, the non-slip portion may be a protrusion or a groove structure, for example, the non-slip portion includes a plurality of stripes, and the plurality of stripes may be disposed around the periphery of the knob 122.

In this embodiment, the knob deco 121 is substantially a cover structure, the knob deco 121 is disposed on a side of the knob 122 facing away from the face cover 212, the knob deco 121 may at least partially cover the knob end face 1223, and the mounting shaft 11 may pass through the mounting through hole 1222 and be fixedly connected to the knob deco 121, or the connecting structure of the knob deco 121 may extend into the mounting through hole 1222 and be fixedly connected to the mounting shaft 11.

In this embodiment, the exterior surface of the knob decoration 121 is provided with a logo, wherein the logo is provided with designated symbols, "the logo is provided with designated symbols" may be understood as a logo having a logo structure or a logo shape outline carrying logo information, the logo information may indicate a specific feature for a user to recognize or/and distinguish, and the feature conveyed by the logo information may include, but is not limited to, numbers, words, letters, special marks, patterns, and the like.

In the present embodiment, the knob decoration 121 covers the mounting through hole 1222, wherein the knob decoration 121 may partially cover the mounting through hole 1222 or cover the entire mounting through hole 1222, and exemplarily, the knob decoration 121 covers the entire mounting through hole 1222, so that the structure inside the mounting through hole 1222 is effectively prevented from being exposed, thereby making the appearance of the entire product more concise and compact.

In some embodiments, the knob deco 121 may be located in the mounting through hole 1222, but a small space may be formed between the outer circumference of the knob deco 121 and the inner wall 1221, or the knob deco 121 may be located outside the mounting through hole 1222, and may contact the knob 122 but not obstruct the normal rotation of the knob 122, or the knob deco 121 may be spaced apart from the knob 122 in the axial direction of the mounting shaft 11, and the space therebetween may be smaller than or equal to the thickness dimension of the knob deco 121.

In some embodiments, the knob decoration 121 covers the knob end face 1223, and an orthographic projection of the knob decoration 121 in the axial direction of the mounting shaft 11 may be greater than an orthographic projection of the knob end face 1223 in the axial direction of the mounting shaft 11. The knob decoration 121 can cover the installation through hole 1222 and cover the whole knob end face 1223, so that the user can not observe the existence of the knob 122 when observing from the side of the knob end face 1223, thus the appearance of the whole product is more compact and concise.

Further, in other embodiments, an orthographic projection of the knob decoration 121 generally along the axial direction of the mounting shaft 11 may be less than or equal to an orthographic projection of the knob end face 1223 along the axial direction of the mounting shaft 11, and the knob decoration 121 may cover an inner ring portion of the knob end face 1223 around the mounting through hole 1222, but not cover an outer ring portion of the knob end face 1223 (i.e., a surface of the knob end face 1223 outside of the inner ring portion).

Referring to fig. 2 and 4, in the present embodiment, the gear assembly 13 is located in the installation cavity 213, wherein the gear assembly 13 may be located entirely in the installation cavity 213 or partially in the installation cavity 213. In the present embodiment, the second transmission gear 132 of the gear transmission assembly 13 is rotatably disposed in the mounting cavity 213, and the first transmission gear 131 is partially disposed in the mounting cavity 213.

Specifically, the gear transmission assembly 13 includes a first transmission gear 131 and a second transmission gear 132, the first transmission gear 131 is engaged with the second transmission gear 132, the knob 122 is in transmission connection with the first transmission gear 131, and the rotation of the knob 122 drives the first transmission gear 131 to rotate, so as to drive the second transmission gear 132 to rotate. The second transmission gear 132 is in transmission engagement with the member to be driven 22, for example, the second transmission gear 132 is in transmission engagement with a timing shaft of a timer.

In the present embodiment, the first transmission gear 131 is disposed on the outer circumference of the spindle body 111, the first transmission gear 131 includes a plurality of planet gears 1311, the plurality of planet gears 1311 are disposed in the mounting through hole 1222 and spaced around the mounting shaft 11, and the plurality of planet gears 1311 may be disposed around the mounting shaft 11 at equal intervals. The inner wall 1221 is provided with a ring gear 1224, and the ring gear 1224 may be provided around the inner circumference of the inner wall 1221. Each planetary gear 1311 is engaged between the second transmission gear 132 and the ring gear 1224. The plurality of planetary gears 1311 can utilize the inner space of the knob 122 to avoid occupying the outer space, and improve the compactness of the whole knob mechanism 10, and the plurality of planetary gears 1311 are arranged around the periphery of the mounting shaft 11, and the gear ring 1224 is meshed with the second transmission gear 132 through the plurality of planetary gears 1311, so that the transmission reliability and stability of the knob 122 can be effectively ensured, when the knob 122 is rotated, the knob 122 can synchronously drive the timer to rotate through the gear transmission assembly 13, and a user can conveniently and accurately control the timer through the knob 122, and the accurate timing of the household appliance 20 is ensured.

In the present embodiment, the second transmission gear 132 includes a first gear 1321 and a second gear 1322, a plurality of planetary gears 1311 are disposed around the first gear 1321, each planetary gear 1311 is engaged between the first gear 1321 and the ring gear 1224, and the first gear 1321 is engaged with the second gear 1322. Specifically, the first gear 1321 may be a gear column, the first gear 1321 may be located in the mounting through hole 1222 and rotatably sleeved outside the mounting shaft 11, for example, it may be sleeved outside the spindle body 111, and the spindle body 111 may be a cylindrical structure, so that the first gear 1321 rotates around the spindle body 111. First gear 1321 may be positioned at one end within mounting through-hole 1222 and extend into mounting cavity 213 at an opposite end, and second gear 1322 may be positioned within mounting cavity 213 and engage the portion of first gear 1321 that extends into mounting cavity 213.

Illustratively, the second gear 1322 may be fixedly connected to a timing shaft of the timer, illustratively, the timer is mounted in the main housing 211, the timing shaft of the timer penetrates the main housing 211 and extends into the mounting cavity 213, and the second gear 1322 may be directly fixedly connected to the timing shaft of the timer.

The first gear 1321 is used as a sun gear, and the knob 122 forms a smooth transmission fit with the first gear 1321 through the plurality of planet gears 1311, so that the gear transmission assembly 13 has at least the advantages of compact structure, small volume, large transmission ratio and the like. The rotation speed ratio of the gears in the gear transmission assembly 13 can be matched and adjusted according to the rotation angle requirement of the knob 122 and the rotation angle of the timer.

In other embodiments, the first transmission gear 131 may be directly and fixedly connected to the knob 122, and the second transmission gear 132 may include only the second gear 1322, and the first transmission gear 131 is engaged with the second gear 1322.

In some embodiments, as shown in fig. 4 and 5, the first transmission gear 131 includes a gear shaft 1312 and a gear 1313, the gear shaft 1312 is fixedly connected to the face cover 212, the gear 1313 is rotatably disposed on the gear shaft 1312, the gear 1313 may be the planetary gear 1311, and the gear 1313 may rotate around the gear shaft 1312, and by fixing the gear 1313 of the first transmission gear 131 to the face cover 212, stability of the gear 1313 is effectively ensured, so that problems of structural failure and the like caused by wobbling offset during rotation can be avoided.

In some embodiments, as shown in fig. 2 and 4, knob mechanism 10 further includes a reset element 16, and reset element 16 is coupled to either first drive gear 131 or second drive gear 132. For example, the restoring member 16 may be connected between the planetary gear 1311 and the body 21, or the restoring member 16 may be connected between the first gear 1321 and the body 21, or the restoring member 16 may be connected between the second gear 1322 and the body 21. Return member 16 may be a spring or a torsion spring. Through setting up piece 16 that resets, not only can guarantee that knob 122 is steady more powerful in rotatory in-process, can also guarantee that knob 122 has feedback to feel when rotatory.

In summary, the knob mechanism 10 and the household appliance 20 provided in the embodiments of the present application, the knob mechanism 10 is in transmission fit with a to-be-driven member 22 (e.g., a timer, a temperature controller, etc.) through the gear transmission assembly 13, the knob 122 can drive the to-be-driven member 22 to stably rotate through the gear transmission assembly 13 in a rotation process, so as to ensure transmission reliability, and meanwhile, the knob decoration 121 can remain stationary relative to the knob 122, ensure stability of an identifier of the knob decoration 121 in the rotation process of the knob 122, and facilitate maintaining a position state of the identifier of the knob decoration 121, thereby effectively achieving position stability of the identifier of the knob decoration 121, ensuring reliability of design elements, and avoiding a risk that a design intention cannot be expressed after the identifier rotates.

In this application, the terms "mounted," "connected," and the like are to be construed broadly unless otherwise explicitly stated or limited. For example, the connection can be fixed, detachable or integrated; may be a mechanical connection; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through the inside of two elements, or they may be connected only through surface contact or through surface contact of an intermediate member. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used solely to distinguish one from another and are not to be construed as referring to or particular structures. The description of the term "some embodiments" 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 application. In this application, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this application can be combined and combined by those skilled in the art without conflicting.

The above embodiments are only intended to illustrate the technical solution of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A knob mechanism, comprising:

installing a shaft;

the knob assembly comprises a knob and a knob decorating part, the knob is rotatably arranged around the mounting shaft, and the knob decorating part is fixedly connected to the mounting shaft;

the gear transmission assembly comprises a first transmission gear and a second transmission gear, the first transmission gear is meshed with the second transmission gear, the knob is in transmission connection with the first transmission gear, the first transmission gear rotates under the drive of the knob, and the second transmission gear rotates under the drive of the knob.

2. The knob mechanism according to claim 1, wherein the knob includes an inner wall that defines a mounting through hole, the mounting shaft is disposed in the mounting through hole, and the knob trim covers the mounting through hole.

3. The knob mechanism according to claim 2, wherein the first transmission gear includes a plurality of planetary gears disposed in the mounting through hole and spaced around the mounting shaft, the inner wall having a ring gear, each of the planetary gears being engaged between the second transmission gear and the ring gear.

4. The knob mechanism according to claim 3, wherein the second transmission gear includes a first gear and a second gear, a plurality of the planetary gears being disposed around the first gear, each of the planetary gears being engaged between the first gear and the ring gear, the first gear being engaged with the second gear.

5. The knob mechanism according to claim 1, wherein the knob includes a knob end surface, the knob decoration covers the knob end surface, and an orthographic projection of the knob decoration in the axial direction of the mounting shaft is larger than an orthographic projection of the knob end surface in the axial direction of the mounting shaft.

6. The knob mechanism according to claim 1, further comprising a reset member connected to the first or second transmission gear.

7. The knob mechanism as claimed in claim 1, wherein the mounting shaft includes a main shaft, a first limiting portion and a second limiting portion, the first limiting portion and the second limiting portion are respectively connected to two ends of the main shaft, the first transmission gear is disposed on the periphery of the main shaft, and the knob decoration has a stop portion for engaging with the first limiting portion.

8. A household appliance, characterized in that, the household appliance includes a machine body, a member to be driven, and the knob mechanism according to any one of claims 1 to 7, the mounting shaft is fixedly connected to the machine body, the knob decoration and at least a part of the knob are exposed outside the machine body, and the second transmission gear is in transmission fit with the member to be driven.

9. The household appliance according to claim 8, wherein the housing includes a main housing and a face cover, the face cover is mounted to the main housing, a mounting cavity is formed between the face cover and the main housing, the knob decoration and at least a portion of the knob are exposed outside the face cover, the member to be driven is mounted to the main housing, the gear transmission assembly is located in the mounting cavity, and the mounting shaft is fixedly connected to the main housing.

10. The household appliance according to claim 9, wherein the first transmission gear comprises a gear shaft fixedly connected to the face cover and a gear rotatably provided to the gear shaft.

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