Sealing structure of display circuit board of dish washing machine

Abstract

The utility model discloses a dish-washing machine display circuit board sealing structure which comprises an outer door body, an electric appliance box, a sealing piece and a display cover plate, the outer door body is provided with a display area, the back face of the outer door body is fixedly connected with an annular sealing groove portion corresponding to the periphery of the display area, and the electric appliance box is fixedly installed on the back face of the outer door body. An opening is formed in the side, facing the outer door body, of the electric appliance box, and an opening edge is formed. The opening edge is matched with the sealing groove part in shape and is sealed through a sealing piece; a concave part is formed in the position, corresponding to the display area, of the front face of the outer door body, the shape of the display cover plate is matched with that of the concave part, the display cover plate is embedded into the concave part, and the periphery of the display cover plate is sealed and fixed through sealant. According to the utility model, the sealing element is embedded into the sealing ring groove to form a sequentially sleeved and embedded structure, so that the stability of the joint can be ensured, and two sealing structures are arranged on the inner circumference and the outer circumference of the opening edge of the electric appliance box, so that the sealing performance of the electric appliance box can be improved.

Description

Technical Field

[0001] This utility model relates to dishwashers, and more specifically, to a sealing structure for a dishwasher display circuit board. Background Technology

[0002] To enhance cleaning power, dishwashers heat the water inside, effectively removing stains from dishes. However, the dishwasher door typically houses some of its control circuitry and display module. During operation, steam generated by the heating process can enter the door, potentially wetting and corroding the display panel, causing it to malfunction. Therefore, ensuring the electrical components inside the dishwasher door are properly sealed is crucial.

[0003] Therefore, a new solution is needed to address this problem. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a sealing structure for a dishwasher display circuit board.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure for a dishwasher display circuit board, comprising an outer door body, an electrical box, a sealing element, and a display cover plate. The outer door body has a display area, and an annular sealing groove is fixedly connected to the back of the outer door body corresponding to the outer periphery of the display area. The electrical box is fixedly installed on the back of the outer door body, and an opening is provided on the side of the electrical box facing the outer door body, forming an opening edge. The opening edge is adapted to the shape of the sealing groove and is sealed by the sealing element. A recess is formed on the front of the outer door body corresponding to the position of the display area. The shape of the display cover plate is adapted to the recess, the display cover plate is embedded in the recess, and the outer periphery of the display cover plate is sealed and fixed by sealant.

[0006] The present invention is further configured such that the bottom of the recessed portion is a flat surface and is fitted and fixed to the display cover plate.

[0007] The present invention is further configured such that the display area of ​​the outer door body has a plurality of through holes for display, and the side of the through holes facing the front of the outer door body is covered by a display cover plate.

[0008] The present invention is further configured such that a display circuit board is fixedly installed inside the electrical box, and the display circuit board is provided with a plurality of display points, each display point corresponding to one of the through holes;

[0009] The present invention is further configured such that, on the outer periphery of the through hole, corresponding to one side of the back of the outer door body, a cylindrical part one is fixedly connected; and on the outer periphery of the display circuit board corresponding to the display point, a cylindrical part two is fixedly connected, and the cylindrical part two is sleeved on the inner periphery of the cylindrical part one.

[0010] The present invention is further configured such that the sealing groove includes a first sealing flange and a second sealing flange, both of which are annular structures surrounding the display area, and the first sealing flange is located on the outer periphery of the second sealing flange, forming a sealing ring groove between the first sealing flange and the second sealing flange; the sealing element is embedded in the sealing ring groove.

[0011] The present invention is further configured such that the sealing element has an annular structure adapted to the sealing ring groove, and the sealing element has an end face facing away from the outer door body; the end face is provided with an annular groove, the groove is provided along the sealing element, and the open edge of the electrical box is embedded in the groove to achieve sealing.

[0012] The present invention is further configured such that the outer door body and the electrical box are fixed together by screws, and the screws apply a force toward the back of the outer door body to the electrical box during the tightening process.

[0013] The present invention is further configured such that a plurality of connecting blocks I are fixedly connected to the outer periphery of the electrical box, and a plurality of connecting blocks II are fixedly connected to the back of the outer door, wherein the connecting blocks II correspond one-to-one with the connecting blocks I and are fixed by screws.

[0014] In summary, this utility model has the following beneficial effects:

[0015] By fixing a sealing groove in the outer door of the dishwasher and sealing the opening edge of the appliance compartment with a sealing element, the pressure during the locking process applies a squeezing action to the sealing element, thereby ensuring a stable and effective seal at the opening of the appliance compartment. By embedding the sealing element into the sealing ring groove, and then embedding the opening edge of the appliance compartment into the groove of the sealing element, a sequentially nested structure is formed, ensuring the stability of the connection. The appliance compartment has two sealing structures on its inner and outer circumferences, further enhancing its sealing performance.

[0016] In addition, the display area on the front of the outer door can be sealed with a display cover to prevent water leakage or ingress from the opening on the front of the outer door. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the outer door structure in this embodiment.

[0018] Figure 2This is an explosion of the sealing structure of a dishwasher display circuit board in this embodiment. Figure 1 ;

[0019] Figure 3 This is an explosion of the sealing structure of a dishwasher display circuit board in this embodiment. Figure 2 ;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 for Figure 3 Enlarged view of section B in the middle.

[0022] Reference numerals: Outer door 1; Front 101; Back 102; Display area 11; Recess 12; Through hole 13; Cylindrical part 1 131; Sealing groove 14; Sealing flange 1 141; Sealing flange 2 142; Sealing ring groove 143; Connecting block 2 15; Electrical box 2; Opening edge 21; Connecting block 1 22; Seal 3; End face 31; Groove 311; Display circuit board 4; Display point 41; Cylindrical part 2 42; Display cover 5. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] This embodiment discloses a sealing structure for a dishwasher display circuit board, referring to... Figures 1-5 As shown, it includes an outer door body 1, an electrical box 2, a sealing component 3, a display circuit board 4, and a display cover 5.

[0025] The outer door 1 has a front side 10 and a back side 102. The front side 10 of the outer door 1 faces the outside of the dishwasher and is generally directly opposite the user. The back side 102 faces the dishwasher, and an inner door is generally installed on the back side. The inner door and the outer door 1 together constitute the door of the dishwasher.

[0026] A display area 11 is located approximately in the upper middle position of the outer door 1. The display area 11 is roughly arranged along the left-right width direction of the dishwasher and has a long strip structure that is wider left and right and narrower top and bottom.

[0027] On the back side 102 of the outer door body 1, corresponding to the outer periphery of the display area 11, an annular sealing groove 14 is fixedly connected. The sealing groove 14 surrounds the outer periphery of the display area 11.

[0028] The electrical box 2 is fixedly installed on the back of the outer door 1. The electrical box 2 has an opening on the side facing the outer door 1, and an opening edge 21 is formed. The shape of the opening edge 21 is adapted to the shape of the sealing groove 14. During assembly, an annular seal 3 is installed between the opening edge 21 and the sealing groove 14 to keep the opening edge 21 of the electrical box 2 sealed.

[0029] Reference Figures 3-5 As shown, the sealing groove 14 includes a first sealing flange 141 and a second sealing flange 142, which are integrally formed with the back of the outer door body 1. Both the first sealing flange 141 and the second sealing flange 142 form an annular structure surrounding the display area 11, with the first sealing flange 141 located on the outer periphery of the second sealing flange 142. A narrow sealing ring groove 143 is formed between the first sealing flange 141 and the second sealing flange 142; the seal 3 is embedded in the sealing ring groove 143, forming a relatively tortuous pressure structure between the sealing ring groove 143 and the seal 3, thus maintaining the installation stability of the seal 3.

[0030] The seal 3 has an annular structure adapted to the sealing ring groove 143, and has an end face 31 facing away from the outer door body 1. An annular groove 311 is formed on the end face 31 of the seal 3, and the groove 311 is also annular in shape. The shape of the open edge 21 of the electrical box 2 is adapted to the groove 311, allowing it to be inserted into the groove 311 during installation to achieve a seal. Essentially, a portion of the open edge 21 of the electrical box 2 can be inserted into the sealing ring groove 143, and a seal is achieved at the connection point by the seal 3.

[0031] The sealing element 3 is made of rubber and has a certain degree of elasticity. It is fixed between the outer door 1 and the electrical box 2 by screws, and during the tightening process, the screws apply a force to the electrical box 2 towards the back 102 of the outer door 1. That is, during the tightening process, a force is applied to the electrical box 2, allowing the open edge 21 of the electrical box 2 to apply elastic pressure to the sealing element 3, maintaining the sealing pressure of the open edge 21 of the electrical box 2, the sealing element 3, and the sealing groove 14, thus maintaining a good sealing effect.

[0032] Specifically, several connecting blocks 1 22 are fixedly connected to the outer periphery of the electrical box 2 (outer periphery of the open edge 21 of the electrical box 2), and several connecting blocks 2 15 are fixedly connected to the back of the outer door 1. Connecting blocks 2 15 correspond one-to-one with connecting blocks 1 22 and are fixed by screws. Connecting blocks 1 22 have screw through holes, and connecting blocks 2 15 have screw connection holes. Screws pass through connecting blocks 1 22 and are threadedly connected to connecting blocks 2 15. The screws are positioned facing the back 102 of the outer door 1 towards the front 101. During tightening, the screws exert a force on the electrical box 2 towards the outer door 1, thereby pressing and sealing the sealing element 3 between the two.

[0033] Furthermore, a recess 12 is formed on the front side 101 of the outer door body 1 corresponding to the position of the display area 11. The shape of the display cover 5 is adapted to the recess 12, the display cover 5 is embedded in the recess 12, and the outer periphery of the display cover 5 is sealed and fixed with sealant. Specifically, the bottom of the recess 12 is flat and is fitted and fixed to the display cover 5.

[0034] The display cover 5 can be a transparent cover, or a paint layer can be coated on the surface of the display cover 5 to give the display cover 5 a certain color, and the paint layer can be cut out in the corresponding parts that need to be light-transmitting to ensure that light can pass through the display normally.

[0035] Several through holes 13 for display are provided in the display area 11 of the outer door 1. The through holes 13 are located where display or light transmission is required, corresponding to the display positions of the display circuit board 4 inside the electrical box 2. Furthermore, a display cover plate 5 covers the side of the through holes 13 facing the front 101 of the outer door 1. The display cover plate 5 can seal the through holes 13 to prevent water leakage or ingress from the through holes 13 on the front 101 of the outer door 1.

[0036] A display circuit board 4 is fixedly installed inside the appliance box 2. The display circuit board 4 has several display points 41, and corresponding light-emitting elements or sensing elements are installed at the display points 41 for displaying the operation of the dishwasher. Each display point 41 corresponds one-to-one with the through hole 13.

[0037] Reference Figure 3 As shown, a cylindrical portion 131 is fixedly connected to the outer periphery of the through hole 13, corresponding to one side of the back surface 102 of the outer door body 1. The cylindrical portion 131 forms an extension of the through hole 13 in the direction of the back surface 102, and a cylindrical portion 42 is fixedly connected to the outer periphery of the display circuit board 4 corresponding to the display point. The display point 41 is located on the inner periphery of the cylindrical portion 42. During installation, the cylindrical portion 42 is sleeved on the inner periphery of the cylindrical portion 131, so that the cylindrical portion 131 and the cylindrical portion 42 can be overlapped at one end, thus avoiding light leakage on the back surface of the through hole 13.

[0038] This embodiment also discloses a dishwasher, including a dishwasher door, with an inner door and an outer door 1 together constituting the dishwasher door; a sealing structure for the dishwasher display circuit board as described in the above embodiment is installed on the outer door 1 of the dishwasher, which can maintain the sealing of the electrical box for the dishwasher display and prevent water from entering or leaking into the dishwasher display circuit.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A sealing structure for a dishwasher display circuit board, characterized in that, The device includes an outer door (1), an electrical box (2), a seal (3), and a display cover (5). The outer door (1) has a display area (11). The back (102) of the outer door (1) is connected to an annular sealing groove (14) corresponding to the outer periphery of the display area (11). The electrical box (2) is fixedly installed on the back of the outer door (1). The electrical box (2) has an opening on one side facing the outer door (1) and has an opening edge (21). The opening edge (21) is adapted to the shape of the sealing groove (14) and is sealed by the seal (3). The front (101) of the outer door (1) has a recess (12) corresponding to the position of the display area (11). The shape of the display cover (5) is adapted to the recess (12). The display cover (5) is embedded in the recess (12) and is sealed and fixed by sealant on the outer periphery of the display cover (5).

2. The sealing structure of the dishwasher display circuit board according to claim 1, characterized in that, The bottom of the recess (12) is flat and is fixed to the display cover (5).

3. The sealing structure of the dishwasher display circuit board according to claim 1, characterized in that, The display area (11) of the outer door (1) is provided with several through holes (13) for display. The through holes (13) facing the front (101) of the outer door (1) are covered by a display cover plate (5).

4. The sealing structure of the dishwasher display circuit board according to claim 3, characterized in that, The electrical box (2) is fixedly installed with a display circuit board (4), which is provided with a number of display points (41), and each display point (41) corresponds to the through hole (13). The outer periphery of the through hole (13) is fixedly connected to one side of the back (102) of the outer door body (1); the display circuit board (4) is fixedly connected to the outer periphery of the display point with a cylindrical part (42), and the cylindrical part (42) is sleeved on the inner periphery of the cylindrical part (131).

5. The sealing structure of the dishwasher display circuit board according to claim 1, characterized in that, The sealing groove (14) includes a first sealing flange (141) and a second sealing flange (142). Both the first sealing flange (141) and the second sealing flange (142) are annular structures surrounding the display area (11), and the first sealing flange (141) is located on the outer periphery of the second sealing flange (142). A sealing ring groove (143) is formed between the first sealing flange (141) and the second sealing flange (142). The sealing element (3) is embedded in the sealing ring groove (143).

6. The sealing structure of the dishwasher display circuit board according to claim 5, characterized in that, The sealing element (3) has an annular structure that is adapted to the sealing ring groove (143). The sealing element (3) has an end face (31) facing away from the outer door body (1). The end face (31) has an annular groove (311) which is provided along the sealing element (3). The open edge (21) of the electrical box (2) is embedded in the groove (311) to achieve sealing.

7. The sealing structure of the dishwasher display circuit board according to claim 1, characterized in that, The outer door (1) and the electrical box (2) are fixed together by screws, and the screws exert a force on the electrical box (2) toward the back (102) of the outer door (1) during the tightening process.

8. The sealing structure of the dishwasher display circuit board according to claim 7, characterized in that, The outer periphery of the electrical box (2) is fixedly connected with several connecting blocks 1 (22), and the back of the outer door (1) is fixedly connected with several connecting blocks 2 (15). The connecting blocks 2 (15) correspond one-to-one with the connecting blocks 1 (22) and are fixed by screws.

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