Display device and dish washing machine

Abstract

The utility model relates to the technical field of household appliances, and discloses a display device and a dishwasher, the display device comprises a circuit board, a plurality of light-emitting pieces and at least one key are arranged on the circuit board, and the key comprises a support part and a key shaft part; the light guide piece is supported on the key, the light guide piece is provided with a first positioning part and a first positioning rib which extend downwards, and the first positioning part is provided with a positioning groove which is provided with an opening in the bottom and is through in the front-back direction; the positioning groove is matched with the key shaft portion of the key, the rear side face of the first positioning portion abuts against the front side of the support portion of the key, and the first positioning rib abuts against the rear side of the support portion so as to limit displacement of the light guide part in the front-back direction. And the circuit board and the light guide piece are fixed on the display panel cover. According to the display device, the light guide part is positioned and matched with the circuit board in advance through the first positioning part and the first positioning rib, positioning of the light guide part in the front-back direction is achieved, front-back movement of the light guide part in the process of assembling the light guide part to the display panel cover is avoided, and the assembling efficiency and the positioning precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field, especially a display device and dish washer. BACKGROUND

[0002] At present, in domestic appliance, such as dish washer, the application of display device is increasingly widespread. The display device usually includes circuit board, light emitting element, light guide element and display board cover and other components. Among them, the role of light guide element is to guide the light emitted by light emitting element to the display panel or the area needing illumination such as button, to realize good display or indication effect.

[0003] In the prior art, the fixing mode of light guide element usually adopts the mode of buckle and screw column and is fixed on the display board cover together with the circuit board. Because of the lack of effective positioning structure between the light guide element and the circuit board, the operator needs to manually adjust the position of the light guide element during assembly, which leads to the difficulty of installing the light guide element to the display board cover, not only the operation is complicated and inefficient, but also deviation is prone to occur, leading to poor light guide effect, such as uneven brightness, light leakage and other problems.

[0004] Therefore, how to provide a light guide element fixing mode with simple structure, convenient assembly, accurate positioning and high reliability is a technical problem to be solved by the technical personnel in the field. UTILITY MODEL CONTENTS

[0005] Based on the technical problem of inconvenient assembly of light guide element in the prior art, the utility model provides a display device, the light guide element is pre-positioned and matched with the circuit board through the first positioning part and the first positioning rib, the positioning of the light guide element in the front and back directions is realized, the front and back movement of the light guide element during assembly to the display board cover is avoided, and the assembly efficiency and positioning accuracy are improved.

[0006] To realize the utility model purpose, the utility model adopts the following technical scheme to realize it:

[0007] A display device, a circuit board, a plurality of light emitting elements and at least one button are arranged on the circuit board, the button comprises a support part and a button shaft part arranged on the support part;

[0008] A light guide element is supported on the button, the light guide element has a first positioning part and a first positioning rib extending downward, and a positioning groove with a bottom opening and penetrating through in the front and back directions is arranged on the first positioning part;

[0009] The positioning groove is matched with the button shaft part of the button, the rear side of the first positioning part abuts against the front side of the support part of the button, and the first positioning rib abuts against the rear side of the support part, so as to limit the displacement of the light guide element in the front and back directions;

[0010] A display panel cover is provided with a key hole corresponding to the key and a light emitting hole corresponding to the light guide piece, and the circuit board and the light guide piece are fixedly connected with the display panel cover.

[0011] In some embodiments, the light guide piece has at least two second positioning ribs extending downward, which abut against the side surface of the support part to limit the displacement of the light guide piece in the left-right direction.

[0012] In some embodiments, the light guide piece and the display panel cover are fixedly connected through a clamping structure.

[0013] In some embodiments, the clamping structure comprises:

[0014] A clamping groove is arranged on the light guide piece;

[0015] A clamping jaw part is arranged in the display panel cover, and the clamping jaw part is fixedly clamped with the clamping groove.

[0016] In some embodiments, a positioning structure is further arranged between the light guide piece and the display panel cover.

[0017] In some embodiments, the positioning structure comprises:

[0018] A positioning hole is arranged on the light guide piece;

[0019] A positioning column is arranged in the display panel cover, and the positioning column is correspondingly matched with the positioning hole.

[0020] In some embodiments, the light guide piece has at least one light guide part; one end of the light guide part is opposite to the light emitting piece, and the other end extends into the light emitting hole.

[0021] In some embodiments, the keys are provided with at least two, the positioning groove is matched with the key shaft part of one of the keys; and the first positioning rib abuts against the rear side of the support part of the other key.

[0022] In some embodiments, the first positioning part is located at the middle position of the light guide piece.

[0023] The utility model further includes a dish washing machine, which comprises the display device.

[0024] Compared with the prior art, the utility model has the advantages and positive effects that:

[0025] The display device, the light guide member is positioned and matched with the circuit board through the first positioning part and the first positioning rib, accurate positioning of the light guide member in the front-rear direction is realized, front-rear movement of the light guide member in the process of assembling to the display panel cover is avoided, the assembling efficiency and the positioning precision are improved, and the consistency of the light guide effect is ensured; the design of the open bottom of the positioning groove facilitates insertion of the key shaft part, and further simplifies the assembling process.

[0026] Other features and advantages of the present application will become more apparent from the following detailed description of the application when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 Fig. 1 is a structural schematic view of the display device of the present application;

[0029] Figure 2 Fig. 2 is a structural schematic view of another perspective of the display device of the present application;

[0030] Figure 3 Fig. 3 is an exploded view of the display device of the present application;

[0031] Figure 4 Fig. 4 is a structural schematic view of the light guide member and the circuit board in the display device of the present application, wherein the display panel cover is not shown;

[0032] Figure 5 Fig. 5 is a structural schematic view of another perspective of the light guide member and the circuit board in the display device of the present application;

[0033] Figure 6 Fig. 6 is a structural schematic view of the light guide member in the display device of the present application; Figure 2 Fig. 7 is an enlarged view of position I in Fig. 6;

[0034] Figure 7 Fig. 8 is an enlarged view of position II in Fig. 6;

[0035] Figure 8 Fig. 9 is a structural schematic view of the light guide member in the display device of the present application; Figure 4 Fig. 10 is an enlarged view of position III in Fig. 9;

[0036] BRIEF DESCRIPTION OF DRAWINGS

[0037] 100 - display panel cover; 110 - key hole; 120 - light emitting hole; 130 - claw part; 140 - positioning column;

[0038] 200 - circuit board;

[0039] 210 - light emitting member;

[0040] 220 - button; 221 - support portion; 222 - button shaft portion;

[0041] 300 - light guide member; 310 - first positioning portion; 311 - positioning groove; 320 - first positioning rib; 330 - second positioning rib; 340 - light guide portion; 350 - clamping groove; 360 - positioning hole. DETAILED DESCRIPTION

[0042] 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. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0043] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0044] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0046] Reference Figures 1-8For an embodiment of the display device, the light emitting member 210 and the circuit board 200 are pre-positioned and assembled, the positioning of the light guide member 300 in the front-rear direction is realized, the front-rear movement of the light guide member 300 during the assembly to the display panel cover 100 is avoided, and the assembly efficiency and the positioning accuracy are improved.

[0047] As Figures 1-3 shown, the display device comprises a display panel cover 100, a circuit board 200 and a light guide member 300.

[0048] The circuit board 200 is provided with a plurality of light emitting members 210 (for example, LED lamp beads) and at least one button 220.

[0049] The button 220 comprises a bracket part 221 and a button shaft part 222 located on the bracket part 221. The bracket part 221 can be firmly connected with the circuit board 200 through a pin or other means, for example, welding, SMT patch. The connection mode of the light emitting member 210 and the circuit board 200 can be surface mount technology (SMT) or other suitable connection mode.

[0050] The light guide member 300 is used for effectively guiding the light emitted by the light emitting member 210 to the button 220 or other areas needing illumination. Figure 6 and Figure 7 As shown, the light guide member 300 is supported on the button 220 and has a first positioning part 310 extending downward and at least one first positioning rib 320.

[0051] The first positioning part 310 is provided with a positioning groove 311 with a bottom opening and penetrating through in the front-rear direction. The shape and size of the positioning groove 311 are matched with the button shaft part 222, for example, the positioning groove 311 can be a U-shaped groove, a V-shaped groove or other suitable shape to realize the cooperation with the button shaft part 222.

[0052] When the light guide member 300 is installed from the top to the circuit board 200, the positioning groove 311 guides and accommodates the button shaft part 222, and the preliminary positioning of the light guide member 300 and the button 220 is realized.

[0053] In order to further limit the displacement of the light guide member 300 in the front-rear direction, the rear side of the first positioning part 310 abuts against the front side of the bracket part 221 of the button 220, and the first positioning rib 320 abuts against the rear side of the bracket part 221. The double abutment structure effectively prevents the shaking of the light guide member 300 in the front-rear direction, and improves the stability of the positioning.

[0054] The display plate cover 100 has a key hole 110 corresponding to the key 220 and a light emitting hole 120 corresponding to the light guide 300. The key hole 110 allows the key shaft part 222 to be exposed, facilitating user operation. The light emitting hole 120 allows light guided by the light guide 300 to be emitted, achieving an illumination effect. The circuit board 200 and the light guide 300 can be firmly connected to the display plate cover 100 by appropriate means, such as buckling, screws, adhesion, etc.

[0055] The display device described above positions the light guide 300 in the front-rear direction by the first positioning part 310 and the first positioning rib 320 cooperating with the circuit board 200, achieving accurate positioning of the light guide 300 in the front-rear direction, avoiding movement of the light guide 300 in the front-rear direction during assembly to the display plate cover 100, improving assembly efficiency and positioning accuracy, and ensuring consistency of the light guiding effect. The design of the open bottom of the positioning groove 311 facilitates the insertion of the key shaft part 222, further simplifying the assembly process.

[0056] In this embodiment, the light guide 300 also has at least two second positioning ribs 330 extending downward. The second positioning ribs 330 abut the side surface of the bracket part 221 of the key 220, thereby limiting displacement of the light guide 300 in the left-right direction. By abutting the second positioning ribs 330 with the side surface of the bracket part 221, movement of the light guide 300 in the left-right direction is further limited, and in combination with the limiting action of the first positioning part 310 and the first positioning rib 320, the light guide 300 is fixed in all directions in the horizontal plane, improving the stability and reliability of the positioning.

[0057] In this embodiment, the light guide 300 and the display plate cover 100 are fixedly connected by a clamping structure. Specifically, as shown in Figure 8 The light guide 300 is provided with a clamping groove 350, and the display plate cover 100 is provided with a clamping claw part 130. The clamping claw part 130 and the clamping groove 350 cooperate with each other to achieve clamping and fixing of the light guide 300 and the display plate cover 100.

[0058] The use of the clamping structure simplifies the assembly process, improves production efficiency, reduces manufacturing costs, and also facilitates disassembly and maintenance of the product.

[0059] In this embodiment, a positioning structure is also provided between the light guide 300 and the display plate cover 100. The positioning structure facilitates clamping operation, and the additional positioning structure can effectively prevent the light guide 300 from loosening or shifting after being assembled with the display plate cover 100, ensuring the stability and consistency of the light guiding effect.

[0060] Specifically, as shown in Figure 8As shown, the light guide 300 is provided with a positioning hole 360, and the display panel cover 100 is provided with a positioning column 140 corresponding to the positioning hole 360. The positioning hole 360 and the positioning column 140 form the positioning structure.

[0061] In the embodiment, the light guide 300 has at least one light guide part 340, one end of the light guide part 340 is opposite to the light emitting part 210 on the circuit board 200 to receive the light emitted by the light emitting part 210, and the other end extends into the light emitting hole 120 on the display panel cover 100 to guide the light to the outside. Through the design of the light guide part 340, the light emitted by the light emitting part 210 can be effectively guided to the area that needs to be illuminated, and a uniform illumination effect is achieved.

[0062] When the number of the keys 220 is at least two, the positioning mode of the light guide 300 is that the positioning groove 311 on the light guide 300 is matched with the key shaft part 222 of one of the keys 220, and the first positioning rib 320 is abutted with the rear side of the support part 221 of the other key 220, and the multiple keys 220 are combined for positioning. This combined positioning mode of the multiple keys 220 can further improve the positioning stability and reliability of the light guide 300, and is especially suitable for the case that the number of the keys 220 is large. In the embodiment, three keys are assembled with the light guide, the first positioning rib 320 and the second positioning rib 330 are respectively provided with two, the middle key 220 is matched with the positioning groove 311, and the keys 220 on both sides are respectively abutted and matched with the first positioning rib 320 and the second positioning rib 330.

[0063] In the embodiment, the light guide 300 is roughly in a strip shape, and the first positioning part 310 is located at the middle position of the light guide 300, further improving the positioning stability and reliability of the light guide 300.

[0064] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can still be modified by those skilled in the art, or some technical features can be replaced equivalently; and these modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A display device, characterized in that, include: A circuit board having several light-emitting elements and at least one button, the button including a support portion and a button shaft portion disposed on the support portion; A light guide is supported on the button; the light guide has a first positioning part and a first positioning rib extending downward, and the first positioning part has a positioning groove with a bottom opening and extending in the front-back direction. The positioning groove cooperates with the key shaft of the key, the rear side of the first positioning part abuts against the front side of the support part of the key, and the first positioning rib abuts against the rear side of the support part to limit the displacement of the light guide in the front-back direction. The display panel cover has button holes corresponding to the buttons and light-emitting holes corresponding to the light guide. The circuit board and the light guide are fixedly connected to the display panel cover.

2. The display device according to claim 1, characterized in that, The light guide has at least two downwardly extending second positioning ribs, which abut against the side of the bracket portion to limit the displacement of the light guide in the left-right direction.

3. The display device according to claim 1, characterized in that, The light guide and the display panel cover are fixedly connected by a snap-fit ​​structure.

4. The display device according to claim 3, characterized in that, The engagement structure includes: A card slot is provided on the light guide component; The claw portion is located inside the display panel cover, and the claw portion engages and is fixed with the slot.

5. The display device according to claim 1, characterized in that, A positioning structure is also provided between the light guide and the display panel cover.

6. The display device according to claim 5, characterized in that, The positioning structure includes: A positioning hole is provided on the light guide component; A positioning post is provided inside the display panel cover, and the positioning post corresponds to and cooperates with the positioning hole.

7. The display device according to claim 1, characterized in that, The light guide has at least one light guide portion; one end of the light guide portion is opposite to the light-emitting element, and the other end extends into the light-emitting hole.

8. The display device according to claim 1, characterized in that, The button is provided with at least two buttons, and the positioning groove cooperates with the button shaft of one of the buttons; the first positioning rib abuts against the rear side of the support portion of the other button.

9. The display device according to claim 1, characterized in that, The first positioning part is located in the middle of the light guide.

10. A dishwasher, characterized in that, Includes the display device as described in any one of claims 1-9.

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