CN207719082U - Keypad - Google Patents

Abstract

The utility model provides a kind of keypad, is related to electronics field.Keypad includes mainboard and sealed key switch, and the sealed key switch is set on the mainboard, and sealant layer is coated on the mainboard, and the sealant layer is by the mainboard face seal.Keypad provided by the utility model has good water resistance, and service life is long, can be widely applied to Intelligent bathroom field.

Description

keyboard

technical field

The utility model relates to the field of electronic products, in particular to a key board.

Background technique

In the field of smart sanitary ware, since the application environment is in the bathroom or toilet, there are high requirements for the waterproofing of the keypad of the product, otherwise the life of the keypad will be very short.

At present, the key boards used in general bathroom products are generally protected by coating with conformal paint, the waterproof level is close to IPX0, the waterproof effect is poor, and the service life is short in humid environments such as bathrooms or toilets.

Utility model content

The purpose of this utility model is to provide a keypad to improve the above problems.

The utility model is achieved in that:

In the first aspect, the utility model provides a key board, comprising: a main board and a sealed key switch, the sealed key switch is arranged on the main board, a sealant layer is coated on the main board, and the sealing The adhesive layer seals the surface of the main board.

As for the above-mentioned key board, preferably, the key board further includes a housing and keys, the main board and the sealed key switch are both arranged in the housing, the housing is provided with a key hole, and one end of the key Located in the housing and corresponding to the sealed key switch, the other end of the key extends out of the housing through the key hole.

As for the above-mentioned key board, preferably, one end of the key located in the housing is provided with a limiting portion.

For the above-mentioned key board, preferably, the key board further includes an indicator light, the indicator light is arranged between the main board and the sealant layer, and the indicator light and the sealed key switch are located in the same side of the motherboard.

As for the above-mentioned keypad, preferably, the keypad further includes a light-shielding bracket, and the light-shielding bracket is arranged around the indicator light.

As for the above-mentioned keypad, preferably, the housing is further provided with a light-transmitting portion, and the light-transmitting portion is disposed corresponding to the indicator light.

As for the keypad mentioned above, preferably, the indicator light is an LED light.

As for the above keypad, preferably, the housing includes a front shell and a rear shell, the front shell is connected to the rear shell by screws, the main board is connected to the rear shell by screws, and the key holes are arranged on the On the front shell.

As for the above-mentioned key sheet, preferably, the sealant layer is a PU glue layer or an epoxy glue layer.

In the second aspect, the utility model provides another key board, including: a main board and a sealed key switch, the sealed key switch is arranged on the main board, the main board is coated with a sealant layer, the The sealant layer seals the circuit arrangement area on the surface of the motherboard.

For the prior art, the button board provided by the utility model has the following beneficial effects:

The key board provided by the utility model has good waterproof performance and long service life, and can be widely used in the field of intelligent sanitary ware.

In order to make the above-mentioned purpose, features and advantages of the present invention more comprehensible, preferred embodiments are specifically cited below, together with the accompanying drawings, and are described in detail as follows.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following drawings will be briefly introduced in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention. Therefore, it should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained according to these drawings without creative work.

FIG. 1 is a cross-sectional view of the keypad provided by the first embodiment of the present invention.

Fig. 2 is an installation effect diagram of the sealed key switch provided by the first embodiment of the present invention on the main board.

Fig. 3 is a schematic structural diagram of the keypad (excluding the front case) provided by the second embodiment of the present invention.

Fig. 4 is a schematic structural view of the front case provided by the second embodiment of the present invention.

Icons: 100-mainboard; 200-sealed key switch; 300-shell; 310-front shell; 311-light-transmitting part; 320-back shell; 400-button; Light blocking bracket.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the utility model is used. It is only for the convenience of describing the utility model and simplifying the description, rather than Any indication or implication that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

first embodiment

Please refer to Fig. 1, the utility model embodiment provides a kind of key board, this key board comprises main board 100, sealed key switch 200, shell 300 and key 400, and sealed key switch 200 is arranged on main board 100, main board 100 And the sealed key switch 200 is set in the shell, and the surface of the main board 100 is coated with a sealant layer 500, the key 400 is set corresponding to the sealed key switch 200, one end of the key 400 is located in the shell, and the other end extends to the outside of the shell.

The shell 300 is preferably made of plastic material, and it includes a front shell 310 and a rear shell 320. The front shell 310 is provided with a button hole for the key 400 to pass through. The cavity of the sealed key switch 200 . The front shell 310 and the rear shell 320 can be arranged by, but not limited to, one-piece molding, buckle connection or screw connection. In the embodiment of the present utility model, the front case 310 and the rear case 320 are connected together by a plurality of screws, and the plurality of screws are evenly distributed on the edge of the case 300 and connect the front case 310 and the rear case 320. In this way, when the inside of the keypad When the structure is damaged, it is convenient to disassemble the key board for maintenance.

Please refer to FIG. 2 , a key circuit (not shown) is arranged on the main board 100, and a key contact (not shown) is arranged on it, and the pins of the sealed key switch 200 are connected to the key contacts on the key circuit. When the sealed key switch 200 is pressed, the key contact connected to the pin can be triggered to generate a trigger signal, thereby realizing the switch control function of the key board.

The motherboard 100 can be, but not limited to, PCB (Printed Circuit Board) or PCBA (Printed Circuit Board Assembled). Preferably, in the embodiment of the present utility model, the main board 100 adopts PCBA.

The main board 100 is arranged in the casing 300 and is connected and fixed with the rear case 320. The surface of the main board 100 is provided with a sealant layer 500, and the sealant layer 500 is coated on the surface of the main board 100 and seals the entire surface of the main board 100, so as to prevent The circuit layout area on the surface of the main board 100 is in contact with water or humid air, achieving a good waterproof effect and ensuring the service life of the key board.

In the embodiment of the present invention, the main board 100 and the rear case 320 can be connected by, but not limited to, screwed, bonded, etc., and the main board 100 and the rear case 320 are preferably connected by screws.

The sealant layer 500 can be, but not limited to, a PU (polyurethane resin) layer, a silicone layer, and an epoxy layer (such as epoxy resin).

The inventors of the utility model have found through practice that by sealing the surface of the entire motherboard 100 with the sealant layer 500, the waterproof level of the keypad can reach IPX7 or above. Moreover, since the sealed key switch 200 is assembled in a self-contained manner instead of a dome, the number of presses can reach more than 100,000 times, which effectively guarantees the service life of the key plate and has a good pressing feel.

The key 400 is set corresponding to the sealed key switch 200. Specifically, the key 400 is provided with a groove for accommodating the plunger of the sealed key switch 200. The plunger of the sealed key switch 200 is arranged in the groove, and the key 400 is close to the sealed key switch. One end of the sealed key switch 200 is provided with a limit portion, the limit portion is larger than the key hole on the front shell 310, and the end of the key 400 away from the sealed key switch 200 is slightly smaller than the key hole and extends from the key hole to the outside of the shell 300. In this way, the sealed key switch 200 can be triggered by pressing the key 400 to turn on/off the circuit on the main board 100 to generate a trigger signal. The setting of the limiting part can limit the button 400 within the range of one end, so as to prevent the button 400 from falling off.

To sum up, the button board provided by the embodiment of the present invention can prevent the circuit layout area of the circuit on the surface of the main board 100 from contacting with water or humid air by coating the sealant layer 500 on the surface of the main board 100 to seal the surface of the main board 100, so as to achieve good The waterproof effect ensures the service life of the key board, and can be widely used in the field of intelligent bathroom.

second embodiment

Please refer to Fig. 3 and Fig. 4 together. The keypad provided by the embodiment of the present invention is an improvement on the basis of the first embodiment. Please refer to the description in the first embodiment for details not involved in this embodiment.

Different from the first embodiment, the keypad provided by the embodiment of the present utility model is further provided with an indicator light 600 and a light-shielding bracket 700 , and the housing 300 is also provided with a light-transmitting portion 311 .

Specifically, the indicator light 600 is set on the main board 100 and is located on the same side of the main board 100 together with the sealed key switch 200, the indicator light 600 is set close to the sealed key switch 200, and the light blocking bracket 700 is also set on the main board 100. And the light-shielding groove surrounds the indicator light 600 to form a light-shielding groove, adopting such a setting is waterproof, can prevent cross-lighting, and makes the lighting effect better. The light-shielding groove is also filled with a sealant layer 500 , which can avoid contact with water or humid air, thereby achieving the waterproof and sealing function of the indicator light 600 .

In the embodiment of the utility model, the keypad for illuminating the key 400 so that the user can use the keypad in an environment with low light intensity can be, but not limited to, LED lights or LCD lights, etc., and LED lights are preferred.

The light-transmitting part 311 is arranged on the position corresponding to the indicator light 600 on the front case 310, and the light-transmitting part 311 can be a light-transmitting groove provided by the front case 310, or a light-transmitting area provided on the front case 310. The utility model There is no specific limitation in the examples.

To sum up, the keypad provided by the embodiment of the present invention can effectively prevent the circuit layout area of the circuit on the surface of the main board 100 from contacting with water or humid air by coating the sealant layer 500 on the surface of the main board 100 to seal the surface of the main board 100 to achieve Good waterproof effect ensures the service life of the key board, and can be widely used in the field of intelligent bathroom. At the same time, by setting the sealed indicator light 600 and setting the corresponding light-shielding bracket 700 and the light-transmitting part 311, the position of the button 400 on the keypad can be correctly indicated by the indicator light 600 in an environment with low light intensity, so that it is convenient to press the button. The board is used, and the lighting effect and waterproof performance are good, and there is no string light.

third embodiment

The embodiment of the utility model provides a key board, which includes a main board 100 and a sealed key switch 200, the sealed key switch 200 is arranged on the main board 100, the main board 100 is coated with a sealant layer 500, the sealant layer 500 seals the circuit layout area on the surface of the motherboard 100 .

To sum up, the keypad provided by the embodiment of the present invention can effectively prevent the circuit layout area of the surface circuit of the main board 100 from contact with water or humidity by coating the sealant layer 500 on the surface of the main board 100 to seal the circuit layout area on the surface of the main board 100. Air contact can achieve a good waterproof effect and ensure the service life of the key board, which can be widely used in the field of smart bathrooms.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The above is only a specific embodiment of the present utility model, but the scope of protection of the present utility model is not limited thereto. Anyone familiar with the technical field can easily think of changes or changes within the technical scope disclosed by the utility model Replacement should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (9)

1. a kind of keypad, which is characterized in that including：Mainboard, sealed key switch, shell and button, it is described sealed to press Key switch is set on the mainboard, and sealant layer is coated on the mainboard, and the sealant layer is close by the mainboard surface Envelope；The mainboard and the sealed key switch may be contained in the shell, and key hole is provided on the shell, described One end of button is located in the shell and corresponds to the sealed key switch setting, and the other end of the button is across described Key hole extends to outside the shell.

2. keypad according to claim 1, which is characterized in that one end that the button is located in the shell is provided with Limiting section.

3. keypad according to claim 1, which is characterized in that further include indicator light, the indicator light is set to described Between mainboard and the sealant layer, and the indicator light is located at the homonymy of the mainboard with the sealed key switch.

4. keypad according to claim 3, which is characterized in that further include the holder that is in the light, the support ring that is in the light is around institute State indicator light setting.

5. keypad according to claim 3, which is characterized in that be additionally provided with transmittance section, the light transmission on the shell Portion corresponds to the indicator light setting.

6. keypad according to claim 3, which is characterized in that the indicator light is LED light.

7. keypad according to claim 1, which is characterized in that the shell includes front housing and rear shell, the front housing with The rear shell screw connection, the mainboard are connect with the rear shell screw, and the key hole is set on the front housing.

8. keypad according to claim 1, which is characterized in that the sealant layer is PU glue-lines or epoxy adhesive layer.

9. a kind of keypad, which is characterized in that including：Mainboard, sealed key switch, shell and button, it is described sealed to press Key switch is set on the mainboard, and sealant layer is coated on the mainboard, and the sealant layer is by the mainboard surface Circuit lays regional seal；

The mainboard and the sealed key switch may be contained in the shell, and key hole, institute are provided on the shell The one end for stating button is located in the shell and corresponds to the sealed key switch setting, and the other end of the button passes through institute Key hole is stated to extend to outside the shell.