A circuit box assembly structure and detergent dispensing device

Abstract

The present invention discloses a circuit box assembly structure and a detergent dispensing device, including a keypad and a circuit board, wherein the peripheral walls of the keypad are bent and convexly extended outward to form an installation groove, and the circuit board is installed in the installation groove, and is characterized in that: it also includes a waterproof gasket, which is clamped between the keypad and the circuit board, and the outer periphery of the waterproof gasket is bent and convexly extended outward to form a flange portion, and at least the extended end of the flange portion is in contact with the board surface of the circuit board. The present invention clamps the waterproof gasket between the circuit board and the silicone keypad, and the edge of the waterproof gasket is bent to form the flange portion. During the clamping process of the circuit board and the silicone keypad, the spacing between the circuit board and the silicone keypad is gradually reduced, and the installation groove is limited, so that the flange portion can extend along or close to the inner wall of the installation groove and toward the board surface of the circuit board until it contacts, so that the circuit board is sealed by the flange portion, and it is prevented that external liquid and dust enter the circuit board through the contact surface between the two to cause short circuit and other safety accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of washing equipment, and in particular relates to a circuit box assembly structure and a detergent dispensing device. Background Art

[0002] In daily household appliances, especially in automatic detergent dispensing devices, there is often a gap between the silicone button and the through hole on the decorative plate. The gap fit allows the silicone button to slide relative to the through hole so as to touch the switch of the circuit board to respond to the program.

[0003] However, the existing silicone buttons are arranged on the silicone button board, and the circuit board is mounted on the silicone button board. After the silicone button is pressed, the through hole can directly correspond to the electronic component. Since the detergent dispensing device is generally arranged on the washing equipment in the water room, toilet, kitchen and other relatively humid spaces or spaces that are easily exposed to water, it is necessary to take waterproof measures for the silicone button part. Most of the current silicone button settings themselves do not have a waterproof effect; or in order to achieve a waterproof effect, the silicone button and the circuit board are directly wrapped with a rubber pad to form an integral design to prevent water from splashing into the electronic components. However, the way the rubber pad is connected to the circuit board increases the processing difficulty and the production cost.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a circuit box assembly structure, in which a waterproof gasket is clamped between a circuit board and a silicone keypad, and the edge of the waterproof gasket is bent to form a flange portion. During the clamping process of the circuit board and the silicone keypad, the spacing between the circuit board and the silicone keypad is gradually reduced and the mounting groove is limited, so that the flange portion can extend along or close to the inner wall of the mounting groove and toward the board surface close to the circuit board until it contacts it, so that the circuit board is sealed by the flange portion to prevent external liquid and dust from entering the circuit board through the contact surface between the two and causing safety accidents such as short circuits.

[0006] Another object of the present invention is to provide a detergent dispensing device.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: to provide a circuit box assembly structure, including a silicone keypad and a circuit board, wherein the peripheral walls of the silicone keypad are bent and protruded outward to form an installation groove, and the circuit board is installed in the installation groove, and further includes:

[0008] The waterproof gasket is sandwiched between the silicone keypad and the circuit board. The outer periphery of the waterproof gasket is bent and bulged outward to form a flange portion, and at least the extended end of the flange portion is in contact with the board surface of the circuit board.

[0009] Furthermore, the side wall of the waterproof gasket at the bend is in contact with the bottom of the installation groove.

[0010] Furthermore, a pressure profile is provided on the side wall of the waterproof gasket facing the silicone key board, and the pressure profile extends in a direction away from the silicone key board until it contacts the side wall of the circuit board.

[0011] Furthermore, a silicone key that can move toward the circuit board is arranged on the silicone key board, and an inwardly recessed groove is arranged on the side wall of the silicone key facing the circuit board, and the groove is sleeved on the outside of the press mold.

[0012] Furthermore, the groove wall of the groove contacts the pressed surface of the pressed inner ring and / or outer ring.

[0013] Furthermore, a plurality of groups of electronic components are arranged at intervals on the circuit board, a plurality of the pressure profiles are arranged at intervals on the waterproof gasket, and the orthographic projection of each pressure profile on the circuit board at least covers the orthographic projection of each corresponding group of electronic components on the circuit board.

[0014] Furthermore, a plurality of through key holes are arranged at intervals on the silicone key plate, and the aperture of the key hole is larger than the opening size of the outer ring of the pressed type;

[0015] A plurality of inwardly recessed water grooves are arranged at intervals on the silicone keypad, and two ends of the water grooves extend to the upper and lower ends of the silicone keypad.

[0016] Furthermore, it also includes:

[0017] The circuit board box has a receiving cavity for receiving the silicone key board, the waterproof gasket and the circuit board, wherein a partition rib extending from the bottom of the receiving cavity is provided in the receiving cavity, and a first positioning column and / or a mounting hole is provided on the partition rib;

[0018] The silica gel key board, the waterproof gasket and the circuit board are correspondingly provided with first positioning holes and / or mounting rods.

[0019] Furthermore, a plurality of second positioning holes are arranged at intervals on the silicone keypad, and a plurality of second positioning columns are correspondingly arranged on a side of the waterproof gasket facing the silicone keypad.

[0020] The present invention further provides a detergent dispensing device, comprising a decorative plate and any one of the above-mentioned circuit box assembly structures installed on the decorative plate.

[0021] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0022] (1) The present invention sandwiches a waterproof gasket between the circuit board and the silicone keypad, and the edge of the waterproof gasket is bent to form a flange portion. During the clamping process of the circuit board and the silicone keypad, the distance between them is gradually reduced and the installation groove is limited, so that the flange portion can extend along or close to the inner wall of the installation groove and toward the board surface close to the circuit board until it contacts the circuit board, so that the circuit board is sealed by the flange portion to prevent external liquid and dust from entering the circuit board through the contact surface between the two and causing safety accidents such as short circuits.

[0023] (2) The present invention limits the contact between the side wall of the waterproof gasket at the bending part and the bottom of the installation groove, so as to form a primary seal between the extended end face of the flange portion and the circuit board, and the waterproof gasket forms a secondary seal at the bottom of the installation groove, thereby further ensuring that external liquid and dust will not enter the circuit board through the contact surface between the two and cause safety accidents such as short circuits.

[0024] (3) The present invention provides a pressure profile on the side wall of the waterproof gasket facing the silicone keypad, and the pressure profile extends in a direction away from the silicone keypad until it contacts the side wall of the circuit board. The back side of the pressure profile can form a further sealing measure after the flange portion is sealed with the circuit board, thereby further ensuring that external liquids and dust will not enter the circuit board through the contact surface between the two and cause safety accidents such as short circuits.

[0025] (4) The present invention provides a silicone key that can move toward the circuit board on the silicone key board, and the groove on the silicone key is sleeved on the outside of the pressing part. The sleeve connection relationship between the groove on the silicone key and the protrusion makes the silicone key on the silicone key board have a positioning and guiding assembly relationship during the pressing process, thereby avoiding the silicone key from moving and deviating. The notch of the groove on the silicone key can limit the pressing surface of the annular pressing mouth to a certain extent, thereby avoiding the deformation of the pressing shape during the process of clamping the waterproof gasket between the circuit board and the silicone key board, thereby failing to achieve complete contact between the back side of the pressing part and the side wall of the circuit board, thereby failing to ensure effective sealing performance.

[0026] (5) The present invention arranges a plurality of groups of electronic components at intervals on the circuit board, and arranges a plurality of pressure profiles corresponding to the electronic components on the waterproof gasket at intervals, and arranges a plurality of pressure profiles on the surface of the waterproof gasket accordingly, so that the corresponding electronic components can be sealed more specifically; and by arranging a plurality of groups of pressure profile structures, the shape structure of the entire waterproof gasket can be made more stable, and after the waterproof gasket is clamped, the waterproof gasket will not be deformed at the corresponding design structure to cause poor sealing.

[0027] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of a detergent dispensing device of the present invention;

[0030] Figure 2 It is a schematic diagram of the internal structure of a chamber of a detergent dispensing device of the present invention;

[0031] Figure 3 It is a schematic diagram of the internal structure of a circuit box assembly structure of the present invention;

[0032] Figure 4 It is a schematic diagram of the internal structure of a circuit box assembly structure of the present invention;

[0033] Figure 5 It is an exploded view of a circuit box assembly structure of the present invention;

[0034] Figure 6 It is a cross-sectional view of a circuit box assembly structure of the present invention;

[0035] Figure 7 It is a structural schematic diagram of a keypad of a circuit box assembly structure of the present invention;

[0036] Figure 8 It is a front view of a waterproof gasket of a circuit box assembly structure of the present invention;

[0037] Fig. 9 It is a rear view of a waterproof gasket of a circuit box assembly structure of the present invention;

[0038] Fig.10 It is a partial structural schematic diagram of a decorative plate of a detergent dispensing device of the present invention;

[0039] Fig.11 It is a schematic diagram of the rear structure of a decorative plate of a circuit box assembly structure of the present invention;

[0040] Fig.12 yes Fig.11 A schematic diagram of the enlarged structure at point A;

[0041] Fig.13 It is a schematic diagram of the rear structure of a decorative plate of a circuit box assembly structure of the present invention;

[0042] Fig.14 yes Fig.13 Schematic diagram of the enlarged structure at B.

[0043] In the figure: 1. decorative plate; 11. front cover of circuit box; 12. through hole; 2. detergent dispensing device; 3. keypad; 31. silicone key; 311. key body; 3111. groove; 312. key protrusion; 32. key hole; 33. water channel; 34. second positioning hole; 35. elastic connecting rib; 4. circuit box; 41. partition rib; 42. first positioning column; 43. mounting hole; 5. waterproof gasket; 51. press molding; 511. outer ring; 512. inner ring; 52. sealing groove; 53. second positioning column; 6. circuit board; 61. reset switch; 62. light guide; 7. covering shell; 71. covering groove; 72. guide groove.

[0044] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0046] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “vertical”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] like Figures 1 to 9 As shown, a circuit box assembly structure described in the present invention includes a key board 33 and a circuit board 6. The peripheral walls of the key board 33 are bent and protrude outward to form a mounting groove, and the circuit board 6 is installed in the mounting groove.

[0049] The key board 33 in the present invention is in the shape of a strip, and is bent at its four edges in a direction perpendicular to its board surface and extended to a certain length, thereby forming a box-like structure with an open end, and then a mounting groove is formed inside the key board 33, and the circuit board 6 is installed in the mounting groove of the key board 33. However, after the circuit board 6 is directly installed in the key board 33, when the silicone key 31 on the key board 33 is pressed (the silicone key 31 and the through hole 12 will be explained in detail in the subsequent embodiments), due to the sliding connection between the silicone key 31 and the through hole 12 on the decorative board 1, a gap will appear when it is pressed, causing external liquid, dust, etc. to enter the mounting groove. There are no protective measures on the circuit board 6, resulting in the invasion of external liquid and dust on the circuit board 6, causing short circuit and other faults of the circuit board 6.

[0050] In order to overcome the above-mentioned defects, the present invention makes the following corresponding improvements:

[0051] It also includes a waterproof gasket 5, which is clamped between the key plate 33 and the circuit board 6. The outer periphery of the waterproof gasket 5 is bent and bulged outward to form a flange portion, and at least the extended end of the flange portion is in contact with the board surface of the circuit board 6.

[0052] In the present invention, when the circuit board 6 is installed in the installation groove of the key board 33, the waterproof gasket 5 is clamped between the key board 33 and the circuit board 6. The waterproof gasket 5 is bent at its edge and forms a certain angle with its surface to form the flange portion, and the angle is a right angle or an obtuse angle. The material of the waterproof gasket 5 can be made of silicone material.

[0053] Specifically, in the initial state of the waterproof gasket 5, the flange portion is set to form an angle with the surface of the waterproof gasket 5 at a right angle or an obtuse angle. Preferably, the angle is an obtuse angle. After the waterproof gasket 5 is bent, it has an extension distance close to the circuit board 6. During the clamping process, the edge of the waterproof gasket 5 will be subject to the gradual reduction of the distance between the two and the limitation of the mounting groove, so that the flange portion can extend along or close to the inner wall of the mounting groove and toward the board surface of the circuit board 6 until it contacts, so that the circuit board 6 is sealed by the flange portion. When the silicone button 31 on the key plate 33 is pressed, even if external liquid and dust enter the mounting groove, they will be blocked by the waterproof gasket 5; at the same time, because the flange portion is in contact with the board surface of the circuit board 6, external liquid and dust will not enter the circuit board 6 through the contact surface between the two to cause safety accidents such as short circuits.

[0054] Furthermore, the side wall of the waterproof gasket 5 at the bend is in contact with the bottom of the installation groove.

[0055] In the present invention, the side wall at the bend of the waterproof gasket 5 has a side wall that is at least partially parallel to the end face of the flange portion. When the circuit board 6 extends into the mounting groove of the key board 33, the end face of the flange portion contacts the board surface of the circuit board 6, and the side wall at the bend of the waterproof gasket 5 contacts the bottom of the mounting groove. That is, the side wall at the bend of the waterproof gasket 5 contacts the bottom of the mounting groove to form a further seal. The waterproof gasket 5 forms a primary seal at the bottom of the mounting groove, and the extended end face of the flange portion forms a secondary seal with the circuit board 6, thereby further ensuring that external liquids and dust will not enter the circuit board 6 through the contact surface between the two to cause safety accidents such as short circuits.

[0056] Furthermore, a pressure profile 51 is provided on the side wall of the waterproof gasket 5 facing the key plate 33 , and the pressure profile 51 extends in a direction away from the key plate 33 until it contacts the side wall of the circuit board 6 .

[0057] In the present invention, the waterproof gasket 5 is subjected to a profiling process 51 on the side wall opposite to the extension direction of the flange portion, so as to form a profiling 51 that is recessed inward relative to the surface of the waterproof gasket 5. The back side of the profiling 51 (i.e., the side wall close to the circuit board 6) protrudes from the surface of the waterproof gasket 5 and contacts the side wall of the circuit board 6, and the protruding length is greater than or equal to the extension length of the flange portion, thereby ensuring that when the extension end of the flange portion contacts the circuit board 6, the back side of the profiling 51 can also contact the side wall of the circuit board 6.

[0058] Since the pressure profile 51 is formed on the side wall of the waterproof gasket 5 and is within the coverage of the flange portion, the back of the pressure profile 51 can form a further sealing measure after the flange portion is sealed with the circuit board 6. This can further ensure that external liquid and dust will not enter the circuit board 6 through the contact surface between the two and cause safety accidents such as short circuits.

[0059] Furthermore, a silicone key 31 movable toward the circuit board 6 is provided on the key plate 33 , and an inwardly recessed groove 3111 is provided on the side wall of the silicone key 31 facing the circuit board 6 , and the groove 3111 is sleeved on the outside of the pressing profile 51 .

[0060] In the present invention, a silicone button 31 is provided on the key plate 33, which can be pressed to move closer to the circuit board 6, and can automatically restore to its original state after being pressed. Among them, a groove 3111 that is recessed inward is provided on one side of the silicone button 31 relative to the circuit board 6. In addition, the pressing profile 51 of the above embodiment can be an annular pressing profile 51, that is, after pressing profile 51 on the surface of the waterproof gasket 5, an annular pressing profile 51 mouth is formed, and a protrusion is formed in the middle. The notch size of the groove 3111 is greater than or equal to the opening size of the annular pressing profile 51 mouth in the waterproof gasket 5. Then the groove 3111 on the silicone button 31 can be used to set the raised part formed after pressing profile 51.

[0061] On the one hand, through the socket connection relationship between the groove 3111 and the protrusion on the silicone button 31, the silicone button 31 on the key plate 33 has a positioning and guiding assembly relationship during the pressing process, thereby preventing the silicone button 31 from moving and deviating; on the other hand, the notch of the groove 3111 on the silicone button 31 can limit the pressing surface 51 of the annular pressing 51 to a certain extent. Since the waterproof gasket 5 is made of soft silicone material, this assembly relationship can shape the pressing 51, thereby preventing the shape of the pressing 51 from being deformed during the process of clamping the waterproof gasket 5 between the circuit board 6 and the key plate 33, thereby failing to achieve complete contact between the back side of the pressing 51 and the side wall of the circuit board 6, and further failing to ensure effective sealing performance.

[0062] Furthermore, the groove 3111 of the silicone key 31 is in contact with the inner ring 512 of the pressing profile 51 and / or the pressing profile 51 surface of the outer ring 511 .

[0063] In the present invention, when the circuit board 6 is installed in the mounting groove in the key plate 33, the inner groove wall of the groove 3111 set on the silicone key 31 contacts the pressing surface 51 of the inner ring 512 of the pressing profile 51, or the outer wall corresponding to the groove 3111 on the silicone key 31 contacts the pressing surface 51 of the outer ring 511, or the inner groove wall and outer wall of the silicone key 31 at the groove 3111 contact the pressing surfaces 51 of the inner ring 512 and the outer ring 511 of the pressing profile 51 respectively.

[0064] Preferably, the inner groove wall and outer wall of the silicone button 31 at the groove 3111 are in contact with the inner ring 512 and the outer ring 511 of the pressure profile 51 respectively. When the groove 3111 of the silicone button 31 is covered on the raised portion on the pressure profile 51, the inner and outer walls of the silicone button 31 can be limitedly matched with the pressure profile 51 surfaces of the two inner and outer rings 511 of the pressure profile 51, thereby ensuring that after the circuit board 6 and the key panel 33 are clamped on the waterproof gasket 5, the silicone button 31 and the pressure profile 51 are matched, so that the movement of the silicone button 31 will not be offset, and the pressure profile 51 of the waterproof gasket 5 will not be obvious, thereby playing a role of mutual limitation.

[0065] Furthermore, a plurality of groups of electronic components are arranged at intervals on the circuit board 6 , and a plurality of the pressure profiles 51 are arranged at intervals on the waterproof gasket 5 , and the orthographic projection of each pressure profile 51 on the circuit board 6 at least covers the orthographic projection of the corresponding groups of electronic components on the circuit board 6 .

[0066] In the present invention, multiple groups of electronic components are arranged at intervals along the length direction of the board surface on the circuit board 6, wherein multiple groups of pressure profiles 51 are arranged on the waterproof gasket 5 corresponding to the front and rear positions of each group, wherein when the back of each pressure profile 51 contacts the board surface of the circuit board 6, the corresponding electronic components can be completely covered therein. Thus, by correspondingly arranging multiple groups of pressure profiles 51 on the surface of the waterproof gasket 5, the corresponding electronic components can be sealed more specifically. And by arranging multiple groups of pressure profiles 51 structures, the shape structure of the entire waterproof gasket 5 can be made more stable. After the waterproof gasket 5 is clamped, the waterproof gasket 5 will not be deformed at the corresponding design structure, resulting in a situation where the sealing is not in place.

[0067] Furthermore, a plurality of through-going key holes 32 are arranged at intervals on the key plate 33, and the aperture of the key hole 32 is larger than the opening size of the outer ring 511 of the pressing profile 51;

[0068] A plurality of inwardly recessed water channels 33 are disposed at intervals on the key plate 33 , and both ends of the water channels 33 extend to the upper and lower ends of the key plate 33 .

[0069] In the present invention, the key plate 33 is provided with key holes 32 corresponding to the silicone key 31 or the pressure profile 51 at intervals along its length direction, wherein the aperture size of the key hole 32 is larger than the opening size of the outer ring 511 of the pressure profile 51. When the waterproof gasket 5 is clamped between the key plate 33 and the circuit board 6, each key hole 32 can completely correspond to the position of each pressure profile 51. In addition, a water groove 33 recessed backward is provided on the front side wall of the key plate 33, each water groove 33 passes through the position of the corresponding key hole 32, and both ends extend to the upper end or the lower end of the key plate 33. In actual operation, when the silicone button 31 is pressed, external liquid may enter the installation groove of the key plate 33 through the through hole 12 on the decorative plate 1. By setting a plurality of water grooves 33, the liquid can flow through the water grooves 33 located at a higher position on the key plate 33 and the surface of the pressed profile 51 to the water grooves 33 located at a lower position, so that the liquid entering the installation groove can be directed to avoid the accumulation of liquid in the space between the key plate 33 and the waterproof gasket 5.

[0070] Specifically, there is a smooth transition between the press profile 51 surface and the notch of the water channel 33 located below. In the initial state, the waterproof gasket 5 is in contact with the plate surface of the key plate 33, so that when the liquid flows from the press profile 51 surface to the water channel 33 below, the liquid can flow out of the water channel 33 below due to the smooth transition assembly relationship between the two.

[0071] Furthermore, it also includes:

[0072] The circuit board 6 box has a housing cavity for accommodating the key board 33, the waterproof gasket 5 and the circuit board 6, and a partition rib 41 extending from the bottom of the housing cavity is provided in the housing cavity, and a first positioning column 42 and / or a mounting hole 43 is provided on the partition rib 41;

[0073] The key plate 33 , the waterproof gasket 5 and the circuit board 6 are correspondingly provided with first positioning holes and / or mounting rods.

[0074] In the present invention, after the circuit board 6 and the waterproof gasket 5 are installed in the installation groove in the key panel 33, the other side of the circuit board 6 is still exposed to the outside world. By setting up a circuit board 6 box, the entire structure consisting of the key panel 33, the waterproof gasket 5 and the circuit board 6 is installed in the accommodating cavity of the circuit board 6 box.

[0075] Specifically, a partition rib 41 protruding from the bottom side wall is provided in the accommodating cavity, and the partition rib 41 can be in a straight line shape, a cross shape, etc. A first positioning column 42 or a mounting hole 43 or both are provided on the partition rib 41. Correspondingly, a first positioning hole or a mounting rod corresponding to the first positioning column 42 or the mounting hole 43 is provided on the key board 33, the waterproof gasket 5 and the circuit board 6. Therefore, the positioning relationship between the first positioning column 42 and the first positioning hole can make the positions of the various components correspond during assembly, and the connection relationship between the mounting hole 43 and the mounting rod can make the various components quickly installed together.

[0076] More specifically, the first positioning column 42 and the first positioning hole adopt an interference fit, so that when the first positioning column 42 is inserted into the first positioning hole, it can play a role of fixed connection. The mounting rod and the mounting hole 43 also adopt an interference fit.

[0077] Furthermore, a plurality of second positioning holes 34 are arranged at intervals on the key plate 33 , and a plurality of second positioning columns 53 are correspondingly arranged on a side of the waterproof gasket 5 facing the key plate 33 .

[0078] In the present invention, a plurality of second positioning holes 34 arranged at intervals on the key plate 33 are arranged around the peripheral side walls of each key hole 32. In addition, a plurality of second positioning posts 53 corresponding to the second positioning holes 34 are arranged on the side of the waterproof gasket 5 facing the key plate 33. An interference fit is adopted between the second positioning posts 53 and the second positioning holes 34, so that after the water retaining gasket and the key plate 33 are fitted together, the waterproof gasket 5 can be prevented from falling off; at the same time, through the matching relationship between the plurality of first positioning holes and the second positioning posts 53, the waterproof gasket 5 as a whole has a plurality of limit points, and deformation will not occur, thereby ensuring the sealing effect of the waterproof gasket 5 on the circuit board 6.

[0079] The present invention also provides a detergent dispensing device 2, comprising a decorative plate 1 and a circuit box 4 assembly structure according to any embodiment installed on the decorative plate 1. The decorative plate 1 is arranged on the front side of the detergent dispensing device 2, and is used to close the chamber of the detergent dispensing device 2. Among them, the decorative plate 1 is provided with a plurality of through holes 12 matching the positions of the silicone buttons 31. The silicone buttons 31 on the key board 33 can pass through the through holes 12 and be slidably connected thereto. After pressing the silicone buttons 31, external liquid or dust may enter through the through holes 12 and contact the key board 33. Then, by setting the waterproof gasket 5 in the above-mentioned waterproof assembly structure of the circuit board 6 to be respectively assembled with the circuit board 6 and the key board 33, the various parts of the waterproof gasket 5 are in contact with the board surface of the circuit board 6 to achieve multi-layer sealing, thereby effectively protecting the various electronic components on the circuit board 6 from contact with liquids and dust, thereby preventing safety hazards.

[0080] The present invention also has a more preferred embodiment:

[0081] like Figures 10 to 14 As shown, a circuit box assembly structure of the present invention comprises a decorative plate 1, a key plate 3 and a circuit board 6 arranged in sequence in the front and back, the circuit board 6 is provided with a plurality of reset switches 61 and light guides 62, the key plate 3 is provided with a plurality of silicone keys 31 movable toward the reset switches 61 in the circuit board 6, and used to display the light of the light guide 62 outside the decorative plate 1 through the silicone keys 31;

[0082] The circuit board 6 of the present invention is provided with a plurality of reset switches 61 and light guides 62 on one side close to the decorative board 1, and each reset switch 61 is provided in one-to-one correspondence with the light guide 62. A keypad 3 is provided between the decorative board 1 and the circuit board 6, wherein a silicone key 31 is provided on the keypad 3 at a position corresponding to each reset switch 61. Since the key is made of silicone material and is translucent, after pressing the reset switch 61, the light guide 62 can transmit light through the silicone key 31 to display light at the decorative board 1, so that after the user presses the corresponding silicone key 31, the user can be prompted by light whether the silicone key 31 operated by the user is wrong.

[0083] However, the multiple silicone buttons 31 traditionally arranged on the key panel 3 are all integrated with the key panel 3, and each silicone button 31 corresponds to a reset switch 61, but there is a lack of a certain separation structure or a separation assembly structure between each adjacent silicone button 31, so that the buttons will have cross-light when displayed, which will interfere with the user's prompts and seriously affect the user experience.

[0084] In order to overcome the above-mentioned defects, the present invention makes the following improvements:

[0085] It also includes a plurality of covering covers 7 which are spaced apart on one side of the decorative plate 1 corresponding to the silicone button 31 . The covering covers 7 have an inwardly recessed covering groove 71 , and at least the outer peripheral wall of the silicone button 31 is in the covering groove 71 .

[0086] In the present invention, a plurality of covering covers 7 are arranged on the side wall of the decorative plate 1 facing the silicone button 31, wherein each covering cover 7 is arranged at equal intervals along the horizontal direction of the decorative plate 1. Specifically, the periphery of the covering cover 7 extends from the connection with the side wall of the decorative plate 1 toward the silicone button 31, thereby forming a covering groove 71 with a receiving space. After the key plate 3 is assembled to the decorative plate 1, at least the outer peripheral wall of the silicone button 31 is completely wrapped by the groove wall of the covering groove 71, so that the light passing through the silicone button 31 through the light guide lamp 62 can be limited, effectively preventing the occurrence of light crosstalk between the silicone buttons 31, and thus providing accurate prompts to the user to ensure the user experience.

[0087] Furthermore, a plurality of through key holes 32 are arranged at intervals on the key plate 3, and an outer peripheral wall of the silicone key 31 is provided with elastic connecting ribs 35 connected to the key holes 32;

[0088] A guide groove 72 is provided on the peripheral wall of the covering cover 7 and extends inward from the notch end of the covering groove 71 . The elastic connecting rib 35 is slidably disposed in the guide groove 72 .

[0089] In the present invention, a plurality of key holes 32 are arranged on the key plate 3 at intervals along its length direction, wherein each key hole 32 is connected to a silicone key 31 by an elastic connecting rib 35, thereby utilizing the softness of the silicone key 31 itself and the elasticity of the elastic connecting rib 35 to ensure that the silicone key 31 has sufficient movement when moving toward the reset switch 61 of the circuit board 6, and the silicone key 31 can be effectively reset by the elasticity of the two.

[0090] A guide groove 72 is provided at the peripheral wall of the covering cover 7 from the end surface of the notch of the covering groove 71 to the groove bottom direction, and the guide groove 72 is connected with the covering groove 71. In addition, the aperture size of the key hole 32 is larger than the outer periphery size of the covering cover 7. When assembling, the silicone key 31 needs to be installed in the covering groove 71, and the silicone key 31 needs to be connected with the elastic connecting rib 35, so a corresponding guide groove 72 must be provided in the covering cover 7. On the one hand, it can provide an assembly installation position for the elastic connecting rib 35, and on the other hand, it can guide the elastic connecting rib 35 in the process of moving with the silicone key 31, thereby ensuring the stability of the movement of the silicone key 31.

[0091] Furthermore, the silicone key 31 includes:

[0092] The button body 311 is connected to the button hole 32 through the elastic connecting rib 35. The button body 311 is provided with an inwardly recessed groove 3111 for housing the corresponding reset switch 61 and the light guide lamp 62 therein;

[0093] The button protrusion 312 coaxially extends outward from the end surface of the button body 311 away from the groove 3111 ; the decorative plate 1 is provided with a through hole 12 corresponding to the button protrusion 312 .

[0094] In the present invention, the silicone key 31 includes a key body 311 and a key protrusion 312, which are integrally formed. The outer peripheral wall of the key body 311 is connected to the inner wall of the key hole 32 through an elastic connecting rib 35, and an inwardly recessed groove 3111 is provided at one end of the key body 311 away from the key protrusion 312, and the reset switch 61 and the light guide 62 can be covered in the groove 3111. Specifically, the longitudinal section of the key body 311 is a waist-shaped hole, and the key protrusion 312 is formed by extending outward from the same axis as the end face of the key body 311, and the orthographic projection of the key protrusion 312 on the key body 311 is located inside the end face of the key body 311. A plurality of through holes 12 are provided through the decorative plate 1, and the key protrusion 312 can pass through the through hole 12 and be formed by gap fitting therewith. The cooperation between the button protrusion 312 and the through hole 12 enables the entire silicone button 31 to move toward one side of the circuit board 6 more stably without deflection.

[0095] Furthermore, the elastic connecting rib 35 is U-shaped, with one end bent and vertically extended outward to be connected to the button body 311 , and the other end bent and vertically extended outward to be connected to the side wall of the button hole 32 .

[0096] In the present invention, the longitudinal section of the main body of the elastic connecting rib 35 is U-shaped, and the two ends of its opening are respectively bent and vertically extended outward, one end is connected to the outer peripheral wall of the button body 311, and the other end is connected to the inner wall of the button hole 32. By designing the structure of the elastic connecting rib 35 into a multi-section bent line shape, the extension length of the elastic connecting rib 35 as the silicone button 31 moves can be guaranteed. Specifically, the upper and lower side walls of the elastic connecting rib 35 perpendicular to its extension direction are flat, so that the resetting force of the elastic connecting rib 35 when moving in the direction of the decorative panel 1 (front and rear direction) is greater, ensuring that it is reset in place.

[0097] Furthermore, the extension length of one end of the elastic connection rib 35 connected to the button body 311 is greater than the extension length of one end of the elastic connection rib 35 connected to the side wall of the button hole 32 .

[0098] In the present invention, the two ends of the opening of the elastic connecting rib 35, wherein the extension length of the end connected to the key body 311 is greater than the extension length of the other end connected to the inner wall of the key hole 32. Since the silicone key 31 needs to be deformed when it moves toward the circuit board 6, the end connected to the key body 311 has a larger extension length and a larger angle deformation, so by limiting the length of the two ends of the opening of the elastic connecting rib 35, it can be ensured that the elastic connecting rib 35 will not be overly pulled or broken when the silicone key 31 moves.

[0099] Furthermore, a plurality of elastic connecting ribs 35 and guide grooves 72 are provided, and the plurality of elastic connecting ribs 35 are symmetrically arranged about the central axis of the key body 311 , and the plurality of guide grooves 72 are symmetrically arranged about the central axis of the covering cover 7 .

[0100] In the present invention, the elastic connecting ribs 35 connected to the key body 311 are in pairs, and multiple pairs are provided. The corresponding elastic connecting ribs 35 are symmetrically arranged about the central axis of the key body 311. Similarly, in order to ensure that the elastic connecting ribs 35 can be assembled in the guide cover, the setting mode of the guide groove 72 is consistent with that of the elastic connecting ribs 35. Since the elastic connecting ribs 35 appear in pairs, it can be ensured that the entire movement of the silicone key 31 is more stable during the process of pressing the silicone key 31 in the direction of the circuit board 6 and resetting through the elastic connecting ribs 35.

[0101] Furthermore, a waterproof gasket 5 is included, which is clamped between the key board 3 and the circuit board 6 and is used to seal the reset switch 61 and the light guide 62 on the circuit board 6.

[0102] In the present invention, a waterproof gasket 5 is provided between the keypad 3 and the circuit board 6, and the waterproof gasket 5 as a whole covers the reset switch 61 and the light guide 62 on one side of the circuit board 6. The provision of the waterproof gasket 5 can separate the keypad 3 from the circuit board 6, thereby effectively preventing external water or impurities from penetrating through the decorative plate 1 into the keypad 3 and contacting the circuit board 6, and effectively preventing the occurrence of safety accidents.

[0103] Furthermore, the waterproof gasket 5 is made of silicone material;

[0104] The waterproof gasket 5 is provided with a plurality of protrusions protruding toward the silicone button 31 at intervals, and the side of the protrusion facing the reset switch 61 is recessed inward to form a sealing groove 52 .

[0105] In the present invention, a convex portion extending toward the silicone key 31 is provided on the waterproof gasket 5, wherein a sealing groove 52 recessed inward is provided on the side of the convex portion facing the reset switch 61, and the corresponding reset switch 61 and the light guide 62 are covered by the sealing groove 52 of the convex portion. Since there are multiple groups of reset switches 61 and light guides 62 correspondingly provided, each group of reset switches 61 and light guides 62 is sealed by multiple sealing grooves 52, thereby further improving the sealing performance of the waterproof gasket 5 to the circuit board 6.

[0106] Furthermore, the covering groove 71 of the covering cover 7 is provided to cover the outer side of the raised portion.

[0107] In the present invention, the notch shape of the coating groove 71 matches the external shape of the raised portion, wherein there is a gap between the raised portion and the coating groove 71 so that the overall silicone button 31 and the raised portion in the waterproof gasket 5 have a corresponding assembly relationship. This makes the overall thickness smaller and more precise after assembly, thereby ensuring that the pressing stroke is relatively short, which is convenient for user operation. Therefore, when the silicone button 31 is pressed, due to the gap between the two during assembly, the raised portion of the waterproof gasket 5 will not be pulled to move together during the reset process of the silicone button 31. Due to this design, it is ensured that after the waterproof gasket 5 is assembled, the notch of the sealing groove 52 on one side of the raised portion can always be in contact with the board surface of the circuit board 6, thereby maintaining a sealed state at all times.

[0108] The present invention also provides a detergent dispensing device 2, which has the circuit box 4 assembly structure described in any of the above embodiments. The circuit box 4 assembly structure also includes a circuit box 4 cover, and a circuit box 4 front cover 11 is arranged on the rear side of the decorative plate 1, wherein the covering cover 7, the key board 3, the waterproof gasket 5, and the circuit board 6 are assembled in the circuit box 4 front cover 11, and then the circuit box 4 cover is connected to the circuit box 4 front cover 11 through a plurality of screws. Through the arrangement of the circuit box 4 assembly structure in the four-base dispensing device, after pressing the silicone key 31 protruding from the through hole 12 in the decorative plate 1, the reset switch 61 turns on the light guide lamp 62, so that the light passes through the waterproof gasket 5 and the silicone key 31 in turn, and under the cover of the covering cover 7, it is effectively ensured that the emitted light can be completely separated from the adjacent silicone keys 31, and the cross-light phenomenon of each silicone key 31 displayed on the decorative plate 1 is effectively avoided.

[0109] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation scheme in the above embodiment can also be further combined or replaced. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the solution of the present invention.

Claims

1. A circuit box assembly structure, comprising a keypad and a circuit board, wherein the peripheral walls of the keypad are bent and extended outward to form a mounting groove, and the circuit board is mounted in the mounting groove, characterized in that: Also includes, The waterproof gasket is clamped between the keypad and the circuit board. The outer periphery of the waterproof gasket is bent and convexly extends outward to form a flange portion, and at least the extended end of the flange portion is in contact with the board surface of the circuit board.

2. A circuit box assembly structure according to claim 1, characterized in that: The side wall of the waterproof gasket at the bending part contacts with the bottom of the installation groove.

3. A circuit box assembly structure according to claim 2, characterized in that: A pressure profile is arranged on the side wall of the waterproof gasket facing the key plate, and the pressure profile extends in a direction away from the key plate until it contacts the side wall of the circuit board.

4. A circuit box assembly structure according to claim 3, characterized in that: The keypad is provided with a silicone key which can move toward the circuit board, and a side wall of the silicone key facing the circuit board is provided with an inwardly recessed groove, which is sleeved on the outside of the press mold.

5. A circuit box assembly structure according to claim 4, characterized in that: The groove wall of the groove contacts the pressed surface of the pressed inner ring and / or outer ring.

6. A circuit box assembly structure according to claim 5, characterized in that: A plurality of groups of electronic components are arranged at intervals on the circuit board, and a plurality of the pressure profiles are arranged at intervals on the waterproof gasket. The orthographic projection of each pressure profile on the circuit board at least covers the orthographic projection of each corresponding group of electronic components on the circuit board.

7. A circuit box assembly structure according to claim 6, characterized in that: The keypad is provided with a plurality of through key holes at intervals, and the aperture of the key holes is larger than the opening size of the outer ring of the pressed type; A plurality of inwardly recessed water grooves are arranged at intervals on the key board, and two ends of the water grooves extend to the upper and lower ends of the key board.

8. A circuit box assembly structure according to claim 7, characterized in that: Also includes, The circuit board box has a receiving cavity for receiving the key board, the waterproof gasket and the circuit board, wherein a partition rib extending from the bottom of the receiving cavity is arranged in the receiving cavity, and a first positioning column and / or a mounting hole is arranged on the partition rib; The key plate, the waterproof gasket and the circuit board are correspondingly provided with first positioning holes and / or mounting rods.

9. A circuit box assembly structure according to claim 8, characterized in that: A plurality of second positioning holes are arranged at intervals on the key board, and a plurality of second positioning columns are correspondingly arranged on a side of the waterproof gasket facing the key board.

10. A detergent dispensing device, characterized in that: The invention comprises a decorative plate and a circuit box assembly structure as described in any one of claims 1 to 9 installed on the decorative plate.

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