Knob light guide structure and microwave oven applying same

Abstract

The utility model relates to the technical field of household appliances, in particular to a knob light guide structure and a microwave oven applying the same, which comprise a light-transmitting cover, a rotating ring, a light guide component and a knob base applying an object control panel, the inner edge of the rotating ring sleeves the outer edge of the knob base and is rotationally connected with the outer edge of the knob base; the light-transmitting cover covers the top end of the light guide assembly and is limited to the inner edge of the top of the rotating ring, the bottom of the light guide assembly is fixed to the inner edge of the knob base, the top end of the light guide assembly abuts against the bottom face of the light-transmitting cover, the bottom end of the light guide assembly abuts against the inner top face of the knob base, and a light guide cavity from the light-transmitting cover to the inner top face of the knob base is formed in the light guide assembly. A luminous source on the inner top surface of the knob base is arranged in the light guide cavity; the light-emitting identification light of the knob is concentrated, the identification effect is better, misleading of a user is effectively avoided, and the user experience is better.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a knob light guide structure and a microwave oven applying the same. Background Art

[0002] The functions of the luminous logo of the knob are as follows: First, it can provide clear instructions for users in a night or dim light environment, enabling users to easily find and operate the knob, enhancing the user experience; Second, to a certain extent, it can also improve the safety of household appliances. In a night or dim light environment, the luminous logo of the knob enables users to more easily find and operate the device, reducing the safety risks caused by misoperation, such as accidentally touching dangerous parts of household appliances (such as high-temperature parts) during the process of groping for the knob; Third, the luminous logo of the knob can make corresponding reactions in cooperation with the control operation of household appliances to provide operation feedback for users. For example, when a user adjusts the heating time of a microwave oven by turning the knob, the brightness of the luminous logo of the knob changes in direct proportion to the heating time, so that the change in heating time can be clearly perceived by the user.

[0003] For traditional knobs with a luminous structure, since there is no separate light guide mechanism, only a light-transmitting member (such as a lens) is provided above the light-emitting device (such as an LED lamp) for light guiding. The light of the light-emitting device scatters very severely, and the light will seep out from the assembly gaps of various components of the knob structure, resulting in the light not being concentrated and emitted from the light-transmitting member, causing the position of the luminous logo to be inaccurate, and misleading users into thinking that the household appliance is unreliable visually, affecting the user experience; even when the knob housing or the housing of the household appliance using the knob is made of a light-transmitting material, the scattering of the light of the light-emitting device will also cause the entire knob or the entire household appliance to emit light, losing the function of the luminous logo. Summary of the Utility Model

[0004] Aiming at the above defects, the purpose of the present utility model is to provide a knob light guide structure and a microwave oven applying the same, so that the light of the luminous logo of the knob is concentrated, the logo effect is better, effectively avoiding misleading users and providing a better user experience.

[0005] To achieve the above object, the present utility model adopts the following technical solutions:

[0006] A knob light guide structure includes a light-transmitting cover, a rotating ring, a light guide assembly, and a knob base applied to the control panel of an application object; the inner edge of the rotating ring is sleeved on the outer edge of the knob base, and the inner edge of the rotating ring is rotatably connected to the outer edge of the knob base;

[0007] The light-transmitting cover is disposed on the top end of the light guide assembly and is limited within the inner edge of the top of the rotating ring. The bottom of the light guide assembly is fixed to the inner edge of the knob base. The top end of the light guide assembly abuts against the bottom surface of the light-transmitting cover, and the bottom end of the light guide assembly abuts against the inner top surface of the knob base. A light guide cavity is formed within the light guide assembly from the light-transmitting cover to the inner top surface of the knob base, and the light source on the inner top surface of the knob base is disposed within the light guide cavity.

[0008] Further, the light guide assembly includes a light guide fixing member and a light guide column; the light guide column is provided with a first light guide channel, and the light guide fixing member is correspondingly provided with a second light guide channel corresponding to the first light guide channel;

[0009] The light-transmitting cover is disposed on the top end of the light guide fixing member. The top port of the second light guide channel abuts against the bottom surface of the light-transmitting cover. The bottom of the light guide fixing member and the inner edge of the knob base are snap-fitted to fix the light guide column. The top port of the first light guide channel correspondingly abuts against the bottom port of the second light guide channel, and the bottom port of the first light guide channel abuts against the inner top surface of the knob base. The light-transmitting cover, the second light guide channel, the first light guide channel, and the inner top surface of the knob base enclose to form the light guide cavity.

[0010] Further, the number of the light guide cavities is the same as the number of the light sources, and each light source corresponds to one light guide cavity.

[0011] Further, both the light guide fixing member and the light guide column are made of light guide materials.

[0012] Further, at least one limiting insertion pin is provided at the bottom end of the light guide column, and a limiting insertion hole corresponding to the limiting insertion pin is provided on the inner top surface of the knob base, and the limiting insertion pin and the limiting insertion hole are inserted and connected.

[0013] Further, a light-shielding eaves is provided at the bottom of the light guide fixing member, and the light-shielding eaves surrounds and covers the connection portion of the top port of the first light guide channel and the bottom port of the second light guide channel.

[0014] Further, at least one fixing card strip is provided at the bottom of the light guide fixing member, and a fixing card slot corresponding to the fixing card strip is provided on the inner edge of the knob base, and the fixing card strip and the fixing card slot are snap-connected.

[0015] Further, at least one first limiting long strip is provided at the bottom of the light guide fixing member, and a limiting groove corresponding to the first limiting long strip is provided on the inner edge of the knob base, and the first limiting long strip and the limiting groove are in concave-convex fit connection.

[0016] Further, a limiting channel is provided in the center of the light guide column, and a second limiting strip is provided at the center of the bottom of the light guide fixing member corresponding to the limiting channel, and the second limiting strip is inserted and connected with the limiting channel.

[0017] A microwave oven includes at least one knob with a light-emitting mark; the knob adopts the above-mentioned knob light guide structure.

[0018] The technical solution provided by the present invention may include the following beneficial effects: Based on the knob base (the knob base generally integrates an LED lamp, an encoder, a PCB board, etc.) of the control panel of the object (such as a household appliance device) applying the knob light guide structure, a rotating ring is sleeved on the outer edge of the knob base, and the inner edge of the rotating ring is rotatably connected to the outer edge of the knob base to achieve the rotation control function; then a light guide component is arranged on the inner edge of the knob base, a light-transmitting cover is covered on the top of the light guide component and limited to the inner edge of the top of the rotating ring, and the bottom of the light guide component is fixed to the inner edge of the knob base, so that the top of the light guide component abuts against the bottom surface of the light-transmitting cover, and the bottom end of the light guide component abuts against the inner top surface of the knob base, thereby forming a light guide cavity from the light-transmitting cover to the inner top surface of the knob base in the light guide component. After the light-emitting source (such as an LED lamp) on the inner top surface of the knob base is arranged in the light guide cavity, the light emitted by the light-emitting source can only be conducted in the light guide cavity, avoiding light scattering and leakage, effectively avoiding misleading users, having a better user experience, and can only be directionally conducted from the light-emitting source to the light-transmitting cover, and the light is concentratedly emitted by the light-transmitting cover, the light is more concentrated, and the light-emitting mark effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of a knob light guide structure according to one embodiment of the present invention.

[0020] Figure 2 is as Figure 1 shown in an assembly schematic diagram of a knob light guide structure.

[0021] Figure 3 is as Figure 1 shown in a cross-sectional view of a knob light guide structure.

[0022] Figure 4 is as Figure 2 shown in an assembly cross-sectional view of a knob light guide structure.

[0023] Figure 5 is a schematic structural diagram of a microwave oven according to one embodiment of the present invention.

[0024] Wherein: the light-transmitting cover 1, the rotating ring 2, the light guide assembly 3, the knob base 4, the light guide cavity 5, the light guide fixing member 31, the light guide column 32, the first light guide channel 321, the second light guide channel 311, the limit pin 323, the limit jack 44, the light-shielding eaves 314, the fixing strip 312, the fixing groove 42, the first limit strip 313, the limit groove 43, the limit channel 322, the second limit strip 314, the knob 6. Detailed implementation manners

[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features, used to distinguish and describe the features, without order or importance.

[0027] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0029] The following will be combined with Figures 1 to 5 to describe a knob light guide structure of an embodiment of the present invention and a microwave oven using the same.

[0030] Embodiment 1

[0031] A knob light guide structure, comprising a light-transmitting cover 1, a rotating ring 2, a light guide assembly 3 and a knob base 4 applied to the control panel of an object; the inner edge of the rotating ring 2 is sleeved on the outer edge of the knob base 4, and the inner edge of the rotating ring 2 is rotatably connected to the outer edge of the knob base 4;

[0032] The light-transmitting cover 1 is covered on the top end of the light guide assembly 3 and is limited to the inner edge of the top of the rotating ring 2. The bottom of the light guide assembly 3 is fixed to the inner edge of the knob base 4. The top end of the light guide assembly 3 abuts against the bottom surface of the light-transmitting cover 1, and the bottom end of the light guide assembly 3 abuts against the inner top surface of the knob base 4. A light guide cavity 5 is formed in the light guide assembly 3 from the light-transmitting cover 1 to the inner top surface of the knob base 4. The light source 41 on the inner top surface of the knob base 4 is arranged in the light guide cavity 5.

[0033] In a preferred embodiment of the knob light guide structure proposed by the present utility model, as Figures 1 to 4 shown, based on the knob base 4 (the knob base 4 generally integrates an LED lamp, an encoder, a PCB board, etc.) of the control panel of an object (such as a household electrical appliance) to which the knob light guide structure is applied, a rotating ring 2 is sleeved on the outer edge of the knob base 4, and the inner edge of the rotating ring 2 is rotatably connected to the outer edge of the knob base 4 to realize the rotation control function; then a light guide assembly 3 is arranged on the inner edge of the knob base 4. The light-transmitting cover 1 is covered on the top end of the light guide assembly 3 and is limited to the inner edge of the top of the rotating ring 2. The bottom of the light guide assembly 3 is fixed to the inner edge of the knob base 4, so that the top end of the light guide assembly 3 abuts against the bottom surface of the light-transmitting cover 1, and the bottom end of the light guide assembly 3 abuts against the inner top surface of the knob base 4. Thus, a light guide cavity 5 is formed in the light guide assembly 3 from the light-transmitting cover 1 to the inner top surface of the knob base 4. After the light source 41 (such as an LED lamp) on the inner top surface of the knob base 4 is arranged in the light guide cavity 5, the light emitted by the light source 41 can only be conducted in the light guide cavity 5, avoiding light scattering and leakage, effectively avoiding misleading users, and having a better user experience. Moreover, the light can only be conducted from the light source 41 in a directional manner to the light-transmitting cover 1, and the light-transmitting cover 1 emits the light concentratedly, so that the light is more concentrated and the light-emitting marking effect is better.

[0034] Further, the light guide assembly 3 includes a light guide fixing member 31 and a light guide column 32; the light guide column 32 is provided with a first light guide channel 321, and the light guide fixing member 31 is correspondingly provided with a second light guide channel 311 corresponding to the first light guide channel 321;

[0035] The light-transmitting cover 1 is covered on the top end of the light guide fixing member 31. The top port of the second light guide channel 311 abuts against the bottom surface of the light-transmitting cover 1. The bottom of the light guide fixing member 31 and the inner edge of the knob base 4 are buckled to fix the light guide column 32. The top port of the first light guide channel 321 correspondingly abuts against the bottom port of the second light guide channel 311. The bottom port of the first light guide channel 321 abuts against the inner top surface of the knob base 4. The light-transmitting cover 1, the second light guide channel 311, the first light guide channel 321 and the inner top surface of the knob base 4 enclose to form the light guide cavity 5.

[0036] In this embodiment, the light guide assembly 3 is composed of a light guide fixing member 31 and a light guide column 32 to form a light guide cavity 5. The light guide column 32 is fixed by snap-fitting the bottom of the light guide fixing member 31 and the inner edge of the knob base 4. Then, the light-transmitting cover 1 is covered on the top end of the light guide fixing member 31, so that the top port of the second light guide channel 311 abuts against the bottom surface of the light-transmitting cover 1, the top port of the first light guide channel 321 correspondingly abuts against the bottom port of the second light guide channel 311, and the bottom port of the first light guide channel 321 abuts against the inner top surface of the knob base 4. Thus, the light-transmitting cover 1, the second light guide channel 311, the first light guide channel 321, and the inner top surface of the knob base 4 enclose to form the light guide cavity 5.

[0037] Furthermore, the number of the light guide cavities 5 is the same as the number of the light-emitting sources 41, and each light-emitting source 41 corresponds to one light guide cavity 5.

[0038] In this embodiment, since there may be more than one knob light-emitting identifier, in order to make each light-emitting identifier concentrate the light and achieve the best display effect, one light guide cavity 5 is configured for each light-emitting source 41, that is, the number of the first light guide channels 321 opened in the light guide column 32 and the number of the second light guide channels 311 opened in the light guide fixing member 31 are correspondingly increased.

[0039] Furthermore, both the light guide fixing member 31 and the light guide column 32 are made of light guide materials.

[0040] In this embodiment, the light guide assembly 3 needs to guide the light emitted by the light-emitting source 41 without light leakage. Therefore, both the light guide fixing member 31 and the light guide column 32 are made of light guide materials, such as plastics, which are light-tight and conducive to strengthening the light guiding to the light-transmitting cover 1.

[0041] Furthermore, at least one limit pin 323 is provided at the bottom end of the light guide column 32, and a limit socket 44 corresponding to the limit pin 323 is provided on the inner top surface of the knob base 4, and the limit pin and the limit socket 44 are plugged and connected.

[0042] In this embodiment, since the light guide column 32 is fixed by snap-fitting the light guide fixing member 31 and the knob base 4, when the knob is impacted by the outside, the light guide column 32 may be displaced, so that the top port of the first light guide channel 321 and the bottom port of the second light guide channel 311 are misaligned and cannot correspond, which may cause light leakage. Therefore, the limit pin 323 is provided at the bottom end of the light guide column 32, and the limit socket 44 corresponding to the limit pin 323 is provided on the inner top surface of the knob base 4. When the light guide column 32 is fixed by snap-fitting the light guide fixing member 31 and the knob base 4, the limit pin and the limit socket 44 are plugged and limited to play a role in limiting the light guide column 32.

[0043] Further, a light-shielding eaves 314 is provided at the bottom of the light guide fixing member 31, and the light-shielding eaves 314 surrounds and covers the connection part of the top port of the first light guide channel 321 and the bottom port of the second light guide channel 311.

[0044] In this embodiment, since the top port of the first light guide channel 321 and the bottom port of the second light guide channel 311 are in contact with each other, due to process errors, the ports cannot be made absolutely flat, so light leakage may occur at the connection part. Therefore, a light-shielding eaves 314 is provided at the bottom of the light guide fixing member 31, and the light-shielding eaves 314 surrounds and covers the connection part of the top port of the first light guide channel 321 and the bottom port of the second light guide channel 311 to avoid light leakage.

[0045] Further, at least one fixing strip 312 is provided at the bottom of the light guide fixing member 31, and a fixing slot 42 corresponding to the fixing strip 312 is provided at the inner edge of the knob base 4, and the fixing strip 312 and the fixing slot 42 are snap-connected.

[0046] In this embodiment, in order to make the snap-fit relationship between the bottom of the light guide fixing member 31 and the inner edge of the knob base 4 firm, at least one fixing strip 312 is provided at the bottom of the light guide fixing member 31, and a fixing slot 42 corresponding to the fixing strip 312 is provided at the inner edge of the knob base 4, and the fixing strip 312 and the fixing slot 42 are snap-connected to form a firm snap-fit relationship.

[0047] Further, at least one first limiting strip 313 is provided at the bottom of the light guide fixing member 31, and a limiting groove 43 corresponding to the first limiting strip 313 is provided at the inner edge of the knob base 4, and the first limiting strip 313 and the limiting groove 43 are in concave-convex fit connection.

[0048] In this embodiment, after the bottom of the light guide fixing member 31 and the inner edge of the knob base 4 are snap-fitted, they may be tilted or displaced under the influence of external forces. Therefore, at least one first limiting strip 313 is provided at the bottom of the light guide fixing member 31, and a limiting groove 43 corresponding to the first limiting strip 313 is provided at the inner edge of the knob base 4, and the first limiting strip 313 and the limiting groove 43 are in concave-convex fit connection, so that the relative positions of the light guide fixing member 31 and the knob base 4 after snap-fitting are fixed.

[0049] Further, a limiting channel 322 is provided at the center of the light guide column 32, and a second limiting strip 314 corresponding to the limiting channel 322 is provided at the center of the bottom of the light guide fixing member 31, and the second limiting strip 314 and the limiting channel 322 are in plug-in connection.

[0050] In this embodiment, after a limit pin 323 is provided at the bottom end of the light guide column 32 for bottom limit, in order to more firmly limit the relative position of the light guide column 32 and ensure that the top port of the first light guide channel 321 corresponds to the bottom port of the second light guide channel 311, a limit channel 322 is provided in the center of the light guide column 32. A second limit strip 314 corresponding to the limit channel 322 is provided at the center of the bottom of the light guide fixing member 31. The second limit strip 314 and the limit channel 322 are inserted and connected to limit the top of the light guide column 32.

[0051] Embodiment 2

[0052] A microwave oven includes at least one knob 6 with a light-emitting mark; the knob 6 adopts the above-mentioned knob light guide structure.

[0053] The present utility model also proposes a preferred embodiment of a microwave oven. As Figure 5 shown, among all the knobs on the operation panel of the microwave oven, as long as the knob 6 with a light-emitting mark adopts the above-mentioned knob light guide structure, the light-emitting mark effect of the knob 6 is better, the light is more concentrated, and the user can more accurately find the position of the knob of the microwave oven in a dark environment, avoiding touching the high-temperature part of the microwave oven.

[0054] For other components and operations of a knob light guide structure and a microwave oven using the same according to the embodiments of the present utility model, those skilled in the art are known and will not be described in detail here.

[0055] In the description of this specification, the description with reference to terms such as "embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A knob light guide structure, characterized in that: It includes a light-transmitting cover, a rotating ring, a light guide component, and a knob base for an application object control panel; the inner edge of the rotating ring is sleeved on the outer edge of the knob base, and the inner edge of the rotating ring is rotatably connected to the outer edge of the knob base; The light-transmitting cover is covered on the top end of the light guide component and is limited to the inner edge of the top of the rotating ring. The bottom of the light guide component is fixed to the inner edge of the knob base. The top end of the light guide component abuts against the bottom surface of the light-transmitting cover, and the bottom end of the light guide component abuts against the inner top surface of the knob base. A light guide cavity is formed in the light guide component from the light-transmitting cover to the inner top surface of the knob base, and a light source on the inner top surface of the knob base is arranged in the light guide cavity.

2. The knurled knob light guide structure according to claim 1, wherein: The light guide component includes a light guide fixing member and a light guide column; the light guide column is provided with a first light guide channel, and the light guide fixing member is provided with a second light guide channel corresponding to the first light guide channel; The light-transmitting cover is covered on the top end of the light guide fixing member. The top port of the second light guide channel abuts against the bottom surface of the light-transmitting cover. The bottom of the light guide fixing member and the inner edge of the knob base are snap-fitted to fix the light guide column. The top port of the first light guide channel correspondingly abuts against the bottom port of the second light guide channel, and the bottom port of the first light guide channel abuts against the inner top surface of the knob base. The light-transmitting cover, the second light guide channel, the first light guide channel, and the inner top surface of the knob base enclose to form the light guide cavity.

3. The knob light guide structure according to claim 1, wherein: The number of the light guide cavities is the same as the number of the light sources, and each light source corresponds to one light guide cavity.

4. A knob light guide structure according to claim 2, characterized in that: Both the light guide fixing member and the light guide column are made of light guide materials.

5. The knob light guide structure according to claim 2, wherein: At least one limiting insertion pin is provided at the bottom end of the light guide column, and a limiting insertion hole is correspondingly provided on the inner top surface of the knob base for the limiting insertion pin, and the limiting insertion pin and the limiting insertion hole are inserted and connected.

6. The knurled knob light guide structure according to claim 2, wherein: A light-shielding eaves is provided at the bottom of the light guide fixing member, and the light-shielding eaves surrounds and covers the connection part of the top port of the first light guide channel and the bottom port of the second light guide channel.

7. A knob light guide structure according to claim 2, characterized in that: At least one fixing card strip is provided at the bottom of the light guide fixing member, and a fixing card slot is correspondingly provided on the inner edge of the knob base for the fixing card strip, and the fixing card strip and the fixing card slot are snap-fitted and connected.

8. The knob light guide structure according to claim 2, wherein: At least one first limiting long strip is provided at the bottom of the light guide fixing member, and a limiting groove is correspondingly provided on the inner edge of the knob base for the first limiting long strip, and the first limiting long strip and the limiting groove are in concave-convex fit connection.

9. The knurled knob light guide structure according to claim 2, characterized in that: A limiting channel is provided in the center of the light guide column, and a second limiting long strip is correspondingly provided at the center of the bottom of the light guide fixing member for the limiting channel, and the second limiting long strip and the limiting channel are inserted and connected.

10. A microwave oven, characterized in that: It includes at least one knob with a light-emitting mark; the knob adopts the knob light guide structure according to any one of claims 1 to 9.

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