CN219658578U - Key assembly and electronic equipment - Google Patents

Abstract

The utility model discloses a key assembly and electronic equipment, and belongs to the technical field of electronic equipment. The button subassembly includes base plate, pot young piece, button and waterproof cover, and pot young piece is installed on the base plate, and the button sets up relatively with pot young piece, and the periphery cover of button is equipped with waterproof cover, and waterproof cover is equipped with the opening near the one end of pot young piece at the button, and the button part exposes in waterproof cover, but direct contact pot young piece in order to make the circuit switch on when the button receives to press. According to the key assembly provided by the utility model, the waterproof sleeve is provided with the opening at one end of the key close to the dome sheet, so that the key part is exposed out of the waterproof sleeve, and the key can be directly contacted with the dome sheet when pressed; meanwhile, the waterproof sleeve cannot be aged due to long-term extrusion of the keys, and the durability of the waterproof keys can be improved.

Description

Key assembly and electronic equipment

Technical Field

The present utility model relates to the field of electronic devices, and in particular, to a key assembly and an electronic device.

Background

The waterproof scheme of the key of the existing electronic equipment is that a layer of flexible material is wrapped outside the key, and because the elastic modulus of the flexible material is smaller, the deformation is larger when the key is pressed, and the key pressing dome wrapped with the flexible material has the problem of poor hand feeling, so that the user experience is influenced. In addition, flexible material that sets up between button and pot young piece is because receive the extrusion of pressing operation for a long time, and the ageing easy emergence leads to flexible material perforation, and then influences electronic equipment's waterproof performance, and waterproof button's durability is poor. Therefore, providing a waterproof key with good hand feeling and durability is a technical problem to be solved.

Disclosure of Invention

The utility model provides a key assembly which can solve the problems of poor hand feeling and poor durability of a waterproof key.

In order to solve the technical problems, the utility model provides a key assembly, which comprises a substrate, a dome sheet, keys and a waterproof sleeve, wherein the dome sheet is arranged on the substrate, the keys are arranged opposite to the dome sheet, the periphery of each key is sleeved with the waterproof sleeve, the waterproof sleeve is provided with an opening at one end of each key, which is close to the dome sheet, the keys are partially exposed out of the waterproof sleeve, and the keys can be directly contacted with the dome sheet to conduct a circuit when pressed.

The utility model provides electronic equipment, which comprises a display screen module, a shell and a control circuit board, wherein the display screen module is arranged on the shell; the shell is provided with the key assembly; the display screen module and the shell are matched to form a containing space, the control circuit board is arranged in the containing space, and the control circuit board is used for controlling the working state of the electronic equipment.

According to the key assembly provided by the utility model, the waterproof sleeve is provided with the opening at one end of the key close to the dome sheet, so that the key part is exposed out of the waterproof sleeve, and the key can be directly contacted with the dome sheet when pressed; meanwhile, the waterproof sleeve cannot be aged due to long-term extrusion of the keys, so that the durability of the waterproof keys can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an embodiment of a key assembly according to the present utility model;

FIG. 2 is a schematic diagram of a key assembly according to another embodiment of the present utility model;

FIG. 3 is a schematic diagram of a key assembly according to another embodiment of the present utility model;

FIG. 4 is a schematic diagram of a key assembly according to another embodiment of the present utility model;

FIG. 5 is a schematic diagram of an embodiment of an electronic device according to the present utility model;

FIG. 6 is a schematic cross-sectional view of the electronic device at C-C in the embodiment of FIG. 5;

fig. 7 is a block diagram schematically illustrating the structural composition of an embodiment of the electronic device of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is specifically noted that the following examples are only for illustrating the present utility model, but do not limit the scope of the present utility model. Likewise, the following examples are only some, but not all, of the examples of the present utility model, and all other examples, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the present utility model.

In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "first," "second," "third," and the like in embodiments of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. The terms "comprising" and "having" and any variations thereof in embodiments of the present utility model are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the utility model. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The utility model provides a key assembly. Referring to fig. 1, fig. 1 is a schematic structural diagram of a key assembly according to an embodiment of the utility model. The key assembly 100 may include a base plate 10, a dome sheet 20, keys 30, and a waterproof jacket 40. Wherein, the dome sheet 20 is installed on the base plate 10, the key 30 is opposite to the dome sheet 20, the waterproof jacket 40 is sleeved on the periphery of the key 30, and an opening is arranged at one end of the key 30 close to the dome sheet 20, which is used for exposing part of the key 30 to the waterproof jacket 40, so that the key 30 can be directly contacted with the dome sheet 20 to conduct a circuit when pressed.

The substrate 10 may be a PCB board, the dome 20 is disposed at a conductive portion on the PCB board, and when the dome 20 is pressed by the key 30, a center point of the dome 20 is concave and contacts a circuit on the PCB, so as to form a loop, and the circuit is turned on; when the dome 20 resumes its shape, the center point of the dome 20 separates from the circuit on the PCB, and the circuit breaks.

The key 30 is accommodated in the waterproof sleeve 40 in an interference fit manner, so that the waterproof sleeve 40 can seal a gap between the key 30 and the electronic equipment, thereby preventing liquid water or water vapor outside the electronic equipment from entering the electronic equipment through the gap between the key 30 and the electronic equipment, and achieving the aim of waterproofing. The waterproof jacket 40 is generally made of a flexible material, and has a smaller elastic modulus, and the elastic modulus of the waterproof jacket 40 is smaller than that of the key 30, so that the waterproof jacket 40 is greatly deformed when pressed.

According to the key assembly 100 provided by the utility model, the waterproof jacket 40 is provided with the opening at one end of the key 30 close to the dome sheet 20, so that part of the key 30 is exposed out of the waterproof jacket 40, and the key 30 can be directly contacted with the dome sheet 20 when pressed, and as the waterproof jacket 40 with smaller elastic modulus is not arranged between the key 30 and the dome sheet 20, the elastic deformation of the key 30 when a user presses the key 30 is reduced, and therefore, the hand feeling of the key 30 can be improved; and the waterproof jacket 40 is not aged by being pressed by the key 30 for a long time, so that the durability of the waterproof key can be improved.

The key 30 may include a key cap 31 and pins 32, the pins 32 are connected to one side of the key cap 31 near the dome 20, the waterproof jacket 40 is wrapped around the pins 32, and the pins 32 are partially exposed from the waterproof jacket 40, so that the pins 32 can directly contact the dome 20 when the key 30 is pressed.

In order to reduce the elastic deformation of the key 30, the key 30 is made of a material having a high elastic modulus. In some embodiments, the key is made of one of PC (polycarbonate), PA (polyamide) or PBT (polybutylene terephthalate) resin. PC has higher strength and elastic coefficient, high impact strength, good dimensional stability and small creep; the PA has the characteristics of light weight, excellent mechanical strength, good wear resistance and the like; the PBT has high hardness and strong ageing resistance. PC, PA, PBT has high hardness, so that the elastic modulus is relatively high, deformation is small when the key is pressed, and the hand feeling of the key 30 can be improved.

In order to reduce the friction between the key 30 and the waterproof jacket 40 and improve the touch of the key 30, the key 30 is provided with a protective sleeve 33, and fig. 2 is a schematic structural diagram of another embodiment of the key assembly according to the present utility model. The protective sleeve 33 wraps the periphery of the pin 32, and the protective sleeve 33 is sleeved with a waterproof sleeve 40.

The protective sleeve 33 may be made of a self-lubricating material, and has a small friction coefficient, so that the friction between the key 30 and the waterproof sleeve 40 can be effectively reduced. In some embodiments, the material of the protective sleeve 33 is one of TPU (thermoplastic polyurethane rubber), ABS (acrylonitrile butadiene styrene copolymer) or POM (polyoxymethylene). TPU, ABS or POM have good self-lubricating property and can reduce friction coefficient.

In one embodiment, the protecting sleeve 33 has an opening at one end of the key 30 near the dome 20, as shown in fig. 3, and fig. 3 is a schematic structural diagram of another embodiment of the key assembly provided in the present utility model. The pins 32 are partially exposed out of the protective sleeve 33, and when the key 30 is pressed, the pins 32 can directly contact the dome 20, so that the hand feeling of the key 30 can be improved.

Further, in order to reduce the friction between the key 30 and the waterproof jacket 40 and improve the touch of the key 30, in an embodiment, the inner surface and the outer surface of the waterproof jacket 40 are respectively provided with a first waterproof rib 41 and a second waterproof rib 42, as shown in fig. 4, and fig. 4 is a schematic structural diagram of another embodiment of the key assembly provided by the present utility model. Wherein, the first waterproof rib 41 protrudes from the inner surface, so that the key 30 can be accommodated in the waterproof sleeve 40 in an interference fit manner; the second waterproof ribs 42 protrude from the outer surface to close the gap between the waterproof jacket 40 and the case, thereby preventing liquid water or vapor outside the electronic device from entering the electronic device through the gap between the key 30 and the electronic device, and improving waterproof performance of the electronic device.

The first waterproof rib 41 protrudes out of the inner surface, when the key 30 is accommodated in the waterproof sleeve 40 in an interference fit manner, the outer side wall of the key 30 is in contact with the first waterproof rib 41, so that the contact area between the key 30 and the waterproof sleeve 40 is reduced, the friction force between the key 30 and the waterproof sleeve 40 can be reduced, and the hand feeling of the key 30 is further improved.

The number of the first waterproof ribs 41 may be plural, and the plurality of the first waterproof ribs 41 are disposed on the inner surface of the waterproof jacket 40 at intervals. Specifically, the number of the first waterproof beads 41 may be 2, and 2 first waterproof beads 41 are provided at opposite ends of the waterproof jacket 40, thereby forming a plurality of waterproof lines. The number of the first waterproof ribs 41 may be greater than 2, and the plurality of first waterproof ribs 41 may increase the waterproof redundancy, but may also increase the friction between the key 30 and the waterproof jacket 40, and the number of the first waterproof ribs 41 may be determined according to the need, which is not limited herein. Accordingly, the number of the second waterproof ribs 42 may be plural, and the plurality of second waterproof ribs 42 may increase the waterproof redundancy between the waterproof jacket 40 and the housing.

In one embodiment, the waterproof jacket 40 is provided with a skirt 43 at an end far from the dome 20, the skirt 43 is connected to the periphery of the waterproof jacket 40, and the skirt 43 can enable the waterproof jacket 40 to be tightly attached to the shell, so that the tightness between the waterproof jacket 40 and the shell is improved.

The waterproof jacket may be made of one of silica gel, TPE (thermoplastic elastomer) or TPR (thermoplastic rubber). The silicone rubber, TPE and TPR have good weather resistance, fatigue resistance and temperature resistance, have high rebound and soft touch, and are suitable for waterproofing of the key assembly 100.

Referring to fig. 5 and fig. 6 together, fig. 5 is a schematic structural diagram of an embodiment of the electronic device provided by the present utility model, and fig. 6 is a schematic structural sectional view of the electronic device at C-C in the embodiment of fig. 5. The electronic device 200 includes a display module 210, a housing 220, and a control circuit board 230, wherein the housing 220 is provided with the key assembly 100. The display screen module 210 and the housing 220 cooperate to form a receiving space, the control circuit board 230 is disposed in the receiving space, and the control circuit board 230 is used for controlling the working state of the electronic device 200. In addition, the detailed technical features of the other hardware portion structures of the electronic device 200 are within the understanding scope of those skilled in the art, and will not be described herein.

Referring to fig. 7, fig. 7 is a schematic block diagram illustrating the structural components of an embodiment of the electronic device according to the present utility model, where the electronic device may be a mobile phone, a tablet computer, a notebook computer, a wearable device, etc., and the embodiment illustrates the mobile phone as an example. The structure of the electronic device may include an RF circuit 91, a memory 92, an input unit 93, a display unit 94, a sensor 95, an audio circuit 96, a WiFi module 97, a processor 98, a power supply 99, and the like. Wherein the RF circuit 91, the memory 92, the input unit 93, the display unit 94, the sensor 95, the audio circuit 96, and the WiFi module 97 are respectively connected with the processor 98; the power supply 99 is used to supply power to the entire electronic device 200.

Specifically, the RF circuit 91 is configured to receive a signal; memory 92 is used to store data instruction information; the input unit 93 is used for inputting information, and may specifically include a touch panel 931 and other input devices 932 such as operation keys; the display unit 94 may include a display panel 941 and the like; the sensor 95 includes an infrared sensor, a laser sensor, etc. for detecting a user proximity signal, a distance signal, etc.; the speaker 961 and microphone 962 are coupled to the processor 98 through the audio circuit 96 for receiving and transmitting audio signals; the WiFi module 97 is configured to receive and transmit WiFi signals, and the processor 98 is configured to process data information of the electronic device. For specific structural features of the electronic device, please refer to the related description of the above embodiment, and detailed description thereof will not be provided herein.

The key assembly provided by the utility model has at least the following beneficial effects:

1. the waterproof sleeve 40 is provided with an opening at one end of the key 30 close to the dome sheet 20, so that part of the key 30 is exposed out of the waterproof sleeve 40, and the key 30 can directly contact the dome sheet 20 when pressed, thereby improving the hand feeling of the key 30; and the waterproof jacket 40 is not aged by long-term pressing of the keys 30, so that the durability of the waterproof keys can be improved.

2. The key 30 is provided with a protective sleeve 33, and the protective sleeve 33 can reduce friction between the key 30 and the waterproof sleeve 40 and improve the hand feeling of the key 30.

3. The first waterproof ribs 41 protrude from the inner surface, so that the contact area between the key 30 and the waterproof sleeve 40 is reduced, the friction between the key 30 and the waterproof sleeve 40 can be reduced, and the hand feeling of the key 30 is further improved.

The foregoing description is only a partial embodiment of the present utility model, and is not intended to limit the scope of the present utility model, and all equivalent devices or equivalent processes using the descriptions and the drawings of the present utility model or directly or indirectly applied to other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A key assembly, comprising:

base plate, pot young piece, button and waterproof cover, the pot young piece is installed on the base plate, the button with the pot young piece sets up relatively, the periphery cover of button is equipped with waterproof cover, waterproof cover is in the button is close to the one end of pot young piece and is equipped with the opening, the button part expose in waterproof cover, but direct contact when the button receives the pressure pot young piece is in order to make the circuit switch on.

2. The key assembly according to claim 1, wherein the inner and outer surfaces of the waterproof jacket are provided with a first waterproof rib and a second waterproof rib, respectively;

the first waterproof ribs protrude out of the inner surface so that the keys can be accommodated in the waterproof sleeve in an interference fit manner;

the second waterproof ribs protrude out of the outer surface to close a gap between the waterproof sleeve and the shell.

3. The key assembly of claim 2, wherein the plurality of first water-proof ribs are spaced apart from the inner surface.

4. The key assembly of claim 2, wherein the waterproof jacket has a skirt at an end remote from the dome sheet, the skirt being connected to an outer periphery of the waterproof jacket so that the waterproof jacket can be closely fitted to the housing.

5. The key assembly of claim 1, wherein the waterproof jacket is one of silicone, TPE, or TPR.

6. The key assembly according to claim 1, wherein the key is provided with a protective sleeve, the protective sleeve is wrapped around the periphery of the key, the protective sleeve is sleeved with the waterproof sleeve, and the protective sleeve is used for reducing friction between the key and the waterproof sleeve.

7. The key assembly of claim 6, wherein the protective sleeve has an opening at an end of the key adjacent the dome, the key portion being exposed to the protective sleeve.

8. The key assembly of claim 6, wherein the protective sleeve is made of one of TPU, ABS or POM.

9. The key assembly of claim 6, wherein the key comprises a key cap and pins, the pins are connected to one side of the key cap near the dome sheet, the protective sleeve wraps the periphery of the pins, the pin portions are exposed to the protective sleeve, and the pins can directly contact the dome sheet when the key is pressed.

10. An electronic device, comprising:

the display screen module, the shell and the control circuit board;

the housing having the key assembly of any one of claims 1-9 disposed thereon;

the display screen module and the shell are matched to form a containing space, the control circuit board is arranged in the containing space, and the control circuit board is used for controlling the working state of the electronic equipment.