Key structure for household appliance

Abstract

The utility model provides a key structure for household appliances, which comprises a key and a control box, the key is buckled and mounted in a key mounting area of the control box, and a key position is arranged below the key mounting area; the key comprises a key touching part, a key propping part, a supporting plate and an elastic arm section; the two sides of the touch key part are each vertically provided with a supporting plate, and the bottom face of the touch key part is vertically and fixedly provided with a key abutting part. The fixed end of the elastic arm section is installed at the connecting end of the supporting plate, and when the elastic arm section is in a natural state, the elastic arm section inclines downwards and is vertically arranged so that the abutting end of the elastic arm section can be gradually away from the supporting plate. The key touch part is pressed to apply a downward pressing acting force to the elastic arm section, so that the elastic arm section is close to the supporting plate to generate elastic deformation, and the key abutting part is driven to move downwards and abut against the key position. The elastic arm section and the supporting plate have enough stroke so that deformation can occur, rebounding reset is achieved through vertical arrangement and deformation recovery of the elastic arm section, and compared with transverse rebounding force, the rebounding force is higher, and the pressing stroke is longer.

Description

Technical Field

[0001] The utility model belongs to the technical field of keys, and particularly relates to a key structure for household appliances. Background Art

[0002] Keys are usually provided on household electrical appliances to trigger related functions. For ordinary keys, their rebound function is achieved by the deformation and recovery of springs or horizontal elastic arms.

[0003] However, adding springs will increase additional parts, and using horizontal elastic arms will require a large amount of structural space. Summary of the Utility Model

[0004] In view of the problems raised in the background art, the utility model provides a key structure for household appliances. An elastic arm section is arranged on the support plate of the key. The elastic arm section is inclined downward and vertically arranged so that the abutting end of the elastic arm section gradually moves away from the support plate, enabling the elastic arm section and the support plate to have sufficient stroke to deform. The vertical arrangement and the deformation recovery of the elastic arm section are used to achieve rebound reset. Compared with the horizontal one, it has a stronger return force and a longer pressing stroke.

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

[0006] A key structure for household appliances includes a key and a control box. The control box is provided with a key installation area, and the key is snap-fitted and installed in the key installation area. A key position is arranged below the key installation area.

[0007] The key includes a touch key part, a key abutting part, a support plate, and an elastic arm section.

[0008] On both sides of the touch key part, a support plate is vertically installed respectively. The bottom surface of the touch key part is vertically fixed with a key abutting part, and the key abutting part is arranged between the two support plates.

[0009] The fixed end of the elastic arm section is installed at the connecting end of the support plate. When the elastic arm section is in a natural state, the elastic arm section is inclined downward and vertically arranged so that the abutting end of the elastic arm section gradually moves away from the support plate.

[0010] Press the touch key part to apply a downward pressing force to the elastic arm section, causing the elastic arm section to approach the support plate and deform elastically, driving the key abutting part to move downward and abut against the key position.

[0011] Preferably, the abutting end of the elastic arm section gradually moves away from the support plate, so that the deformation distance between the elastic arm section and the support plate gradually increases from the fixed end to the abutting end.

[0012] Preferably, the elastic arm segments fixedly installed on one support plate are opposite and arranged in reverse to those fixedly installed on the other support plate.

[0013] Preferably, a notch is formed in the plate body of the support plate, and the notch is connected to the fixed end of the elastic arm segment.

[0014] Preferably, a clamping block is provided in the key installation area;

[0015] A fastening groove matching the clamping block is formed in the connection end of the support plate;

[0016] When the elastic arm segment is in a natural state, the clamping block is snapped into the fastening groove to limit the upward displacement of the key;

[0017] When the elastic arm segment is in a deformed state, the fastening groove is disengaged from the clamping block.

[0018] Preferably, the body of the clamping block gradually protrudes from top to bottom;

[0019] The depth of the fastening groove gradually increases from top to bottom.

[0020] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0021] 1. In this technical solution, elastic arm segments are provided on the support plate of the key. The elastic arm segments are inclined downward and arranged vertically so that the abutting ends of the elastic arm segments gradually move away from the support plate, allowing sufficient travel between the elastic arm segments and the support plate to deform. The vertical arrangement and the deformation recovery of the elastic arm segments are used to achieve rebound reset. Compared with the horizontal direction, the resilience is stronger and the pressing travel is longer;

[0022] 2. In this technical solution, a clamping block is provided on the control box and a fastening groove is provided on the support plate of the key. By using the clamping block to cooperate with the fastening groove, the key is inserted from the front of the control box, making it easy to insert and difficult to remove. It does not require fixation by a plate and occupies little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the key of the present invention;

[0024] Figure 2 is a cross-sectional schematic diagram of the key of the present invention;

[0025] Figure 3 is a structural diagram of the key of the present invention in a deformed state;

[0026] Figure 4 is a schematic structural diagram of the key and the control box of the present invention when the elastic arm segment is in a natural state;

[0027] Figure 5 is a schematic structural diagram of a key and a control box when the elastic arm section of the present utility model is in a deformed state;

[0028] Figure 6 is an attachment of the present utility model Figure 5 an enlarged schematic diagram of B in the figure.

[0029] Key 1, touch key part 11, key abutting part 12, support plate 13, connection end 131, notch 132, snap-in groove 133, elastic arm section 14, fixed end 141, abutting end 142, control box 2, clamping block 21, key position 22. Specific embodiments

[0030] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and through specific embodiments.

[0031] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0032] The terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, device, product or terminal that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or terminals.

[0033] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present utility model. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0034] For an ordinary key, its rebound function is achieved by relying on the deformation recovery of a spring or a horizontal elastic arm; however, adding a spring will increase additional parts, and using a horizontal elastic arm will require a large amount of structural space; to solve the above problems, the present application proposes a key structure for household appliances, such as Figures 1 to 6As shown, it includes a key 1 and a control box 2. The control box 2 is provided with a key 1 installation area, and the key 1 is snap-fitted and installed in the key 1 installation area. Below the key 1 installation area, there is a key position 22;

[0035] The key 1 includes a touch key part 11, a key abutting part 12, a support plate 13, and an elastic arm section 14;

[0036] On both sides of the touch key part 11, a support plate 13 is vertically installed respectively. On the bottom surface of the touch key part 11, a key abutting part 12 is vertically fixed, and the key abutting part 12 is arranged between the two support plates 13;

[0037] The fixed end 141 of the elastic arm section 14 is installed at the connection end 131 of the support plate 13. When the elastic arm section 14 is in a natural state, the elastic arm section 14 inclines downward and is vertically arranged so that the abutting end 142 of the elastic arm section 14 gradually moves away from the support plate 13;

[0038] Press the touch key part 11 to apply a downward pressing force to the elastic arm section 14, causing the elastic arm section 14 to approach the support plate 13 and undergo elastic deformation, driving the key abutting part 12 to move downward and abut against the key position 22.

[0039] In this embodiment, the touch key part 11 of the key 1 is the area touched and pressed by the user, which can be understood as a panel in this embodiment. On the downward direction of the two side edges of the touch key part 11, the support plates 13 are vertically installed. The two support plates 13 and the touch key part 11 form a U-shaped cavity. Inside the U-shaped cavity, there is the key abutting part 12. The key abutting part 12 can be understood as a column made of a hard material. When pressed downward, the key abutting part 12 can abut against and squeeze the key position 22;

[0040] Furthermore, in order to enable the key 1 to automatically rebound after being pressed and touched, the present application is provided with an elastic arm section 14. The fixed end 141 of the elastic arm section 14 and the connection end 131 of the support plate 13 are fixed to each other as a support point. In the natural state, the elastic arm section 14 is inclined downward, so that the abutting end 142 of the elastic arm section 14 gradually moves away from the support plate 13, allowing there to be enough stroke between the elastic arm section 14 and the support plate 13 to undergo deformation. At the same time, the elastic arm section 14 is vertically arranged downward. The vertical arrangement plus the deformation recovery of the elastic arm section 14 realizes the rebound reset. Compared with the horizontal direction, the rebound force is stronger and the pressing stroke is longer.

[0041] Furthermore, the elastic arm section 14 can be squeezed by touching and pressing the touch key part 11, so that the deformation distance between the elastic arm section 14 and the support plate 13 is shortened, thereby undergoing deformation, enabling the key abutting part 12 to have space to move downward so that the key abutting part 12 approaches and squeezes the key position 22.

[0042] Furthermore, in this embodiment, the button 1 installation area can be understood as a space formed by multiple limiting plates for accommodating the button 1. Below the button 1 installation area is the PCB board, and the key position 22 is set on the PCB board. By pressing the key position 22, the corresponding function of the PCB board can be triggered.

[0043] Preferably, the abutting end 142 of the elastic arm section 14 gradually moves away from the support plate 13, so that the deformation distance between the elastic arm section 14 and the support plate 13 gradually increases from the fixed end 141 towards the abutting end 142.

[0044] In this embodiment, the distance between the elastic arm section 14 and the support plate 13 is the deformation distance, that is, when pressed down, the distance that the support plate 13 can approach the elastic arm section 14. Since the elastic arm section 14 is inclined and the deformation distance gradually increases from the fixed end 141 towards the abutting end 142, so that the elastic arm section 14 can be vertical, with stronger resilience and a longer pressing stroke of the button 1.

[0045] Preferably, the elastic arm section 14 fixedly installed on one support plate 13 and the elastic arm section 14 fixedly installed on the other support plate 13 are opposite and arranged in the opposite direction.

[0046] In this embodiment, the two elastic arm sections 14 are arranged oppositely and in the opposite direction, so that the pressing force of the button 1 is distributed more evenly, making it not easy for the button 1 to tilt sideways after long-term pressing and ensuring the flatness of the button 1.

[0047] Preferably, a notch 132 is provided at the connection end 131 of the support plate 13, and the notch 132 is connected to the fixed end 141 of the elastic arm section 14.

[0048] In this embodiment, the connection end 131 is provided with a notch 132, and the notch 132 is connected to the fixed end 141, which can provide a certain elastic force to the elastic arm section 14, enabling the elastic arm section 14 to deform.

[0049] Preferably, the button 1 installation area is provided with a latch 21;

[0050] A snap-in groove 133 matching the latch 21 is provided on the plate body of the support plate 13;

[0051] When the elastic arm section 14 is in the natural state, the latch 21 snaps into the snap-in groove 133 to limit the upward displacement of the button 1;

[0052] When the elastic arm section 14 is in the deformed state, the snap-in groove 133 is disengaged from the latch 21.

[0053] Preferably, the block 21 gradually protrudes from top to bottom;

[0054] The depth of the locking groove 133 gradually increases from top to bottom.

[0055] The ordinary button 1 is generally put in from the back of the control box 2, and relies on the fixation of the PCB board to prevent the button 1 from falling out; however, the button 1 of this embodiment is put in from the front of the control box 2, and the card block 21 and the buckle groove 133 are provided, so that the button 1 is easy to put in and difficult to take out, does not need to rely on the fixation of the board, and occupies little space.

[0056] When the elastic arm section 14 is in a natural state, the clamping block 21 is buckled into the buckling groove 133, and the clamping block 21 and the buckling groove 133 are limited to prevent the button 1 from moving upward and falling off;

[0057] When the elastic arm section 14 is in a deformed state, the buckling groove 133 will naturally separate from the block 21 during the pressing process, and will not restrict the pressing of the key 1, making it easy to enter and difficult to exit the key 1.

[0058] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A key structure for household appliances, characterized in that: It includes a button and a control box, wherein the control box is provided with a button installation area, the button is buckled and installed in the button installation area, and a key position is provided below the button installation area; The key comprises a key-touching portion, a key-resisting portion, a supporting plate and an elastic arm section; A support plate is vertically installed on each of the two sides of the key-touch portion, and a key-resisting portion is vertically fixed on the bottom surface of the key-touch portion, and the key-resisting portion is arranged between the two support plates; The fixed end of the elastic arm section is installed on the connecting end of the support plate. When the elastic arm section is in a natural state, the elastic arm section is tilted downward and arranged vertically so that the abutting end of the elastic arm section gradually moves away from the support plate. The key-touching portion is pressed to apply a downward pressing force to the elastic arm segment, so that the elastic arm segment is elastically deformed close to the support plate, and the key-resisting portion is driven to move downward and resist the key position.

2. A key structure for household appliances according to claim 1, characterized in that: The abutting end of the elastic arm section gradually moves away from the support plate, so that the deformation distance between the elastic arm section and the support plate gradually increases from the fixed end toward the abutting end.

3. A key structure for household appliances according to claim 1, characterized in that: The elastic arm section fixedly mounted on one supporting plate is opposite to and in the opposite direction to the elastic arm section fixedly mounted on the other supporting plate.

4. A key structure for household appliances according to claim 1, characterized in that: A notch is formed at the connecting end of the support plate, and the notch is connected to the fixed end of the elastic arm segment.

5. A key structure for household appliances according to claim 1, characterized in that: The button installation area is provided with a card block; The support plate is provided with a buckling groove matching the clamping block; When the elastic arm section is in a natural state, the card block is buckled into the buckling groove and limits the upward displacement of the button; When the elastic arm section is in a deformed state, the buckling groove is disengaged from the clamping block.

6. A key structure for household appliances according to claim 5, characterized in that: The block body of the card block gradually protrudes from top to bottom; The depth of the buckling groove increases gradually from top to bottom.

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