A control switch and a household appliance using the same

Abstract

The utility model discloses a control switch, including the cooperation connection of upper cover (1) and lower shell (2), the upper cover (1) and lower shell (2) between the surrounding formation has the accommodation cavity (1a), the PCB board (3) is installed in this accommodation cavity (1a), the front of upper cover (1) is equipped with touch display subassembly (4), its characterized in that: lower shell (2) detachable connection in the back of upper cover (1), the PCB board (3) detachable connection in the upper cover (1) of the utility model discloses still discloses a kind of application has the control switch of household appliance. Compared with prior art, the control switch of the utility model is convenient to replace PCB board and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, specifically to a control switch and a household appliance using the control switch. Background Technology

[0002] Currently, most range hoods on the market use mechanical key switches, electronic tactile switches, or touch-sensitive key switches. The display interface consists of text or patterns silkscreened on the range hood panel or button caps, offering limited controllable information, a monotonous and unappealing visual effect, and lacking user-friendliness. As society develops, people's demands for material and cultural life are increasing. Their requirements for home appliances go beyond just functionality and performance; they also seek aesthetically pleasing, interactive, and other user-friendly human-computer interaction interfaces.

[0003] The increasing maturity of touchscreen technology has provided an opportunity for the UI design of human-machine interface displays for home appliances. A user-friendly UI will undoubtedly be favored by more and more users, especially young people. For example, Chinese patent application CN201520879462.5, entitled "A Touch-Type Display Control Switch," discloses a touch-type display control switch, including an upper cover and a lower shell, which are sealed together. The upper cover is equipped with a touch panel and indicator lights. The touch panel has several touch buttons and a display screen. It also includes a PCB control board, which is located in the space between the upper cover and the lower shell. The PCB control board includes a microcontroller, a sensing circuit, a switch circuit, and a connection circuit. The touch panel and indicator lights are connected to the PCB control board. A capacitive sensor is installed on the touch panel and is electrically connected to the touch panel to transmit the charge signal generated by the touch to the touch panel, which then transmits it to the microcontroller.

[0004] However, for PCBs using surface mount LED technology, the top cover (which also serves as a light-shielding plastic shell) must be pressed firmly against the PCB. The traditional method is to use a hot-riveting post to hot-rivet the top cover to the PCB. The top cover also needs to be glued to the touch display panel. As a result, when repairing the PCB, the touch display panel can only be replaced along with it, which is costly. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a control switch that is easy to replace the PCB board and has low cost, in light of the current state of the technology.

[0006] The second technical problem to be solved by this utility model is to provide a household appliance that uses the above-mentioned control switch.

[0007] The technical solution adopted by this utility model to solve the first technical problem mentioned above is as follows: a control switch, including an upper cover and a lower shell that are connected in a mating manner, with an accommodating cavity formed between the upper cover and the lower shell, and a PCB board installed in the accommodating cavity, and a touch display component provided on the front side of the upper cover, characterized in that: the lower shell is detachably connected to the back side of the upper cover, and the PCB board is detachably connected to the upper cover.

[0008] To achieve a detachable connection between the lower shell and the upper cover, the back of the upper cover is provided with a plurality of spaced first mounting posts, each with a first mounting blind hole extending along its axial direction. The lower shell is provided with a plurality of first mounting holes corresponding to the first mounting blind holes. The lower shell and the upper cover are connected to each other through the first mounting holes and the first mounting blind holes and are fixed by fasteners.

[0009] To enable a detachable connection between the PCB board and the top cover, the back of the top cover is provided with a plurality of spaced second mounting posts. Each second mounting post has a second mounting blind hole extending along its axial direction. The PCB board has a plurality of second mounting holes corresponding to the second mounting blind holes. The PCB board and the top cover are connected to each other through the second mounting holes and the second mounting blind holes and are fixed by fasteners.

[0010] To enable touch display operation, the touch display assembly includes a touch display glass and a touch display film adhered to the back of the touch display glass. The touch display film is adhered to the front of the top cover and is connected to the PCB board for signal transmission.

[0011] To facilitate the adhesion of the touch display film to the front of the top cover and prevent adhesive from flowing into the center of the touch display film, the periphery of the front of the top cover has an annular recess. An annular adhesive-blocking groove is formed on the bottom wall inside the recess. An adhesive area is formed in the area outside the adhesive-blocking groove inside the recess, and a clear area is formed in the area inside the adhesive-blocking groove inside the recess. The periphery of the back of the touch display film is adhered to the front of the top cover by adhesive in the adhesive area.

[0012] To ensure full contact between the touch display film and the touch display glass and thus guarantee the touch effect, a through hole communicating with the accommodating cavity is provided in the center of the front side of the top cover. A boss is provided on the front side of the PCB board. The boss extends outward from the front side of the top cover through the through hole, and the end face of the boss is flush with the front side of the adhesive in the adhesive area and abuts against the center of the back side of the touch display film.

[0013] In order to enable touch sensing of the touch display film, a spring hole is provided on the front side of the top cover at the position between the recess and the perforation, which communicates with the receiving cavity, for receiving the spring that abuts against the PCB board and the touch display film.

[0014] To avoid crosstalk between the infrared emitting tube and the infrared receiving tube, a first through hole and a second through hole are provided on the front of the top cover at the position between the recess and the perforation, which are in communication with the accommodating cavity. The second through hole is arranged close to the corresponding first through hole, and a partition is formed between the second through hole and the first through hole.

[0015] The front side of the PCB board is provided with corresponding infrared emitting tubes and infrared receiving tubes, which are respectively inserted into the first through hole and the second through hole.

[0016] To ensure radar signal transmission, a radar cutout area is provided on one side of the clearance area, which is connected to the accommodating cavity. A radar signal transmission unit is provided on the front side of the PCB board, which faces the radar cutout area.

[0017] The technical solution adopted by this utility model to solve the second technical problem mentioned above is: a household appliance that uses the above-mentioned control switch.

[0018] Compared with the prior art, the advantages of this utility model are: by detachably connecting the lower shell to the back of the upper cover and detachably connecting the PCB board inside the upper cover, when the PCB board needs to be repaired, the lower shell 2 can be removed from the upper cover 1 first, and then the PCB board can be removed from the upper cover, which facilitates the replacement of the PCB board 3 without having to replace the touch display component together, thus reducing costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention using a household appliance with a control switch;

[0020] Figure 2 for Figure 1 A longitudinal sectional view;

[0021] Figure 3 for Figure 2 Enlarged view of Part I;

[0022] Figure 4 for Figure 1 A three-dimensional structural diagram of the central control switch;

[0023] Figure 5 for Figure 4 A three-dimensional exploded view;

[0024] Figure 6 for Figure 4 A schematic diagram of the three-dimensional structure from another direction;

[0025] Figure 7 for Figure 6 A three-dimensional exploded diagram. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0028] like Figures 1 to 7 The image shows a preferred embodiment of this utility model using a household appliance with a control switch. The household appliance can be a range hood, integrated cooktop, etc., and the following description uses a range hood as an example. The range hood includes a range hood body 10 and a control switch 20 installed on the front side of the range hood body 10. The control switch 20 includes an upper cover 1, a lower shell 2, a PCB board 3, and a touch display component 4.

[0029] The top cover 1 has a plurality of spaced-apart first mounting posts 11 protruding from its periphery on the back side, each first mounting post 11 having a first mounting blind hole 111 extending axially thereon; the top cover 1 has a plurality of spaced-apart second mounting posts 12 protruding from its center on the back side, each second mounting post 12 having a second mounting blind hole 121 extending axially thereon; the top cover 1 has an annular recess 13 on its periphery on the front side, the bottom wall of the recess 13 having an annular adhesive-blocking groove 131, the area outside the adhesive-blocking groove 131 inside the recess 13 forming an adhesive area 132 for accommodating adhesive, and the area inside the adhesive-blocking groove 131 inside the recess 13 forming a clearance area 133 to prevent adhesive from flowing into the center of the front side of the top cover 1. Furthermore, a radar cutout area 1331 communicating with the accommodating cavity 1a is provided on the right side of the clearance area 133; a through hole 14 communicating with the accommodating cavity 1a is provided in the middle of the front of the top cover 1; a spring hole 15 communicating with the accommodating cavity 1a is provided on the front of the top cover 1 at the position between the recess 13 and the through hole 14, for accommodating the spring that abuts against the PCB board 3 and the touch display film 42; a first through hole 16 and a second through hole 17 communicating with the accommodating cavity 1a are also provided on the front of the top cover 1 at the position between the recess 13 and the through hole 14. There are two of each of the first through holes 16 and the second through hole 17, which correspond to each other and are arranged alternately on the left and right. Each second through hole 17 is arranged close to the corresponding first through hole 16, and a partition 171 is formed between the second through hole 17 and the first through hole 16.

[0030] The lower shell 2 is detachably connected to the back of the upper cover 1, and a cavity 1a is formed between the lower shell 2 and the upper cover 1. Specifically, the lower shell 2 has a plurality of first mounting holes 21 corresponding to the first mounting blind holes 111. The lower shell 2 and the upper cover 1 are connected to each other through the first mounting holes 21 and the first mounting blind holes 111 and are fixed by fasteners. A third mounting post 22 is provided at the middle position of the top of the lower shell 2, and a third mounting blind hole 221 extending along its axial direction is provided on the third mounting post 22.

[0031] The PCB board 3 is located within the accommodating cavity 1a and is detachably connected to the upper cover 1. Specifically, the PCB board 3 has multiple second mounting holes 31 corresponding to the second mounting blind holes 121. The PCB board 3 and the upper cover 1 are interconnected through the second mounting holes 31 and the second mounting blind holes 121 and are fixed by fasteners. The front side of the PCB board 3 has a boss 32, which extends outward from the front side of the upper cover 1 through the through hole 14, and the end face of the boss 32 is flush with the adhesive surface of the adhesive area 132. The front side of the PCB board 3 has two pairs of corresponding infrared emitting tubes 33 and infrared receiving tubes 34. Each infrared emitting tube 33 and infrared receiving tube 34 is inserted into the corresponding first through hole 16 and second through hole 17. Due to the presence of the baffle 17, crosstalk between the infrared emitting tubes 33 and infrared receiving tubes 34 can be avoided. The right side of the front side of the PCB board 3 has a radar signal transmission unit 35, which faces the radar cutout area 1331 to ensure radar signal transmission.

[0032] The touch display assembly 4 includes a touch display glass 41 and a touch display film 42 bonded to the center of the back of the touch display glass 41. The touch display film 42 is bonded to the front of the upper cover 1 and connected to the PCB board 3 via signal. Specifically, the periphery of the back of the touch display film 42 is bonded to the front of the upper cover 1 by adhesive in the adhesive area 132, and the end face of the aforementioned boss 32 abuts against the center of the back of the touch display film 42. This ensures that the touch display film 42 and the touch display glass 41 are in full contact to ensure the touch effect. The left and right sides of the touch display glass 41 are snapped onto the range hood body 10. After snapping, the center of the touch display glass 41 is prone to warping. Therefore, in this embodiment, the range hood body 10 is provided with a third mounting hole 101 corresponding to the third mounting blind hole 221. The lower shell 2 and the range hood body 10 are connected to each other through the third mounting hole 101 and the third mounting blind hole 221 and are fixed by fasteners to improve the deformation situation.

[0033] In addition, the aforementioned range hood can be controlled by a voice module, which is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the range hood to perform corresponding operations, thereby realizing intelligent control of the range hood and improving the user experience.

[0034] The working principle of this embodiment is as follows: When PCB board 3 needs to be repaired, simply remove the fasteners connected between the third mounting hole 101 and the third mounting blind hole 221, then pull the left and right sides of the touch display glass 41 out of the range hood body 10, and the entire control switch 20 can be removed from the range hood body 10. Then remove the fasteners connected between the first mounting hole 21 and the first mounting blind hole 111, and the lower shell 2 can be removed from the upper cover 1. Finally, remove the fasteners connected between the second connecting hole 31 and the second mounting blind hole 121, and the PCB board 3 can be removed from the upper cover 1. This makes it convenient to replace the PCB board 3 without replacing the touch display glass 41, which is cost-effective.

Claims

1. A control switch comprising an upper cover (1) and a lower shell (2) that are matingly connected, wherein a receiving cavity (1a) is formed between the upper cover (1) and the lower shell (2), and a PCB board (3) is mounted in the receiving cavity (1a), wherein a touch display component (4) is provided on the front side of the upper cover (1), characterized in that: The lower shell (2) is detachably connected to the back of the upper cover (1), and the PCB board (3) is detachably connected inside the upper cover (1).

2. The control switch according to claim 1, characterized in that: The back of the upper cover (1) is provided with a plurality of spaced first mounting posts (11), and the first mounting posts (11) are provided with first mounting blind holes (111) extending along their axial direction. The lower shell (2) is provided with a plurality of first mounting holes (21) corresponding to the first mounting blind holes (111). The lower shell (2) and the upper cover (1) are connected to each other through the first mounting holes (21) and the first mounting blind holes (111) and are fixed by fasteners.

3. The control switch according to claim 1, characterized in that: The back of the top cover (1) is provided with a plurality of spaced second mounting posts (12), and the second mounting posts (12) are provided with second mounting blind holes (121) extending along their axial direction. The PCB board (3) is provided with a plurality of second mounting holes (31) corresponding to the second mounting blind holes (121). The PCB board (3) and the top cover (1) are connected to each other through the second mounting holes (31) and the second mounting blind holes (121) and are fixed by fasteners.

4. The control switch according to any one of claims 1 to 3, characterized in that: The touch display assembly (4) includes a touch display glass (41) and a touch display film (42) adhered to the back of the touch display glass (41). The touch display film (42) is adhered to the front of the top cover (1) and is signal connected to the PCB board (3).

5. The control switch according to claim 4, characterized in that: The upper cover (1) has an annular recess (13) on the periphery of its front side. An annular adhesive groove (131) is provided on the bottom wall inside the recess (13). An adhesive area (132) is formed in the area outside the adhesive groove (131) inside the recess (13). A clearance area (133) is formed in the area inside the recess (13) inside the adhesive groove (131). The periphery of the back side of the touch display film (42) is bonded to the front side of the upper cover (1) by the adhesive in the adhesive area (132).

6. The control switch according to claim 5, characterized in that: The top cover (1) has a through hole (14) in the middle of its front side that communicates with the accommodating cavity (1a). The PCB board (3) has a boss (32) on its front side. The boss (32) passes through the through hole (14) and extends outward from the front side of the top cover (1). The end face of the boss (32) is flush with the front side of the adhesive in the adhesive area (132) and abuts against the middle of the back side of the touch display film (42).

7. The control switch according to claim 6, characterized in that: The top cover (1) has a spring hole (15) on its front side located between the recess (13) and the perforation (14) that communicates with the receiving cavity (1a) for receiving a spring that abuts against the PCB board (3) and the touch display film (42).

8. The control switch according to claim 6, characterized in that: The top cover (1) has a first through hole (16) and a second through hole (17) that communicate with the accommodating cavity (1a) at a position between the recess (13) and the perforation (14) on its front side. The second through hole (17) is arranged close to the corresponding first through hole (16) and a baffle (171) is formed between the second through hole (16) and the first through hole (16). The front side of the PCB board (3) is provided with corresponding infrared emitting tube (33) and infrared receiving tube (34), which are respectively inserted into the first through hole (16) and the second through hole (17).

9. The control switch according to claim 5, characterized in that: A radar cutout area (1331) is provided on one side of the clearance area (133) and communicates with the accommodating cavity (1a). A radar signal transmission unit (35) is provided on the front side of the PCB board (3), and the radar signal transmission unit (35) is directly facing the radar cutout area (1331).

10. A household appliance that uses a control switch as described in any one of claims 1 to 9.

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