CN220232980U - Key assembly and electronic equipment - Google Patents

Abstract

The application discloses a button subassembly and electronic equipment belongs to electronic equipment technical field. The key assembly comprises a key cap and a key sleeve, one end of the key sleeve is connected with the key cap, and the opposite end of the key sleeve is correspondingly provided with a touch switch piece; the key cap and the key sleeve are made of a first material and a second material respectively, and the elastic modulus of the first material is greater than that of the second material. According to the key assembly, the key cap and the key sleeve are respectively made of the first material and the second material, and the elastic modulus of the first material is larger than that of the second material, and the key cap with the larger elastic modulus deforms smaller under the same pressure, so that the pressing deformation of the key assembly is reduced, and a user can apply smaller pressing force to trigger the tact switch piece, so that user experience is 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 key assembly of the electronic equipment, especially the key assembly with the waterproof function, needs to be waterproof by using a flexible material, and the flexible material can generate large deformation when being pressed, so that a user needs to apply large pressing force to trigger the touch switch piece, and the user experience is affected. Therefore, how to reduce the pressing deformation of the key assembly is a technical problem to be solved.

Disclosure of Invention

The application provides a key assembly, can solve the great problem of pressing deformation of key assembly.

In order to solve the technical problems, the key assembly provided by the application comprises a key cap and a key sleeve, one end of the key sleeve is connected with the key cap, and the opposite end of the key sleeve is correspondingly provided with a touch switch piece, and the key cap is pushed to trigger the touch switch piece when being pressed by the key cap; the key cap and the key sleeve are made of a first material and a second material respectively, and the elastic modulus of the first material is greater than that of the second material.

In an embodiment, the first material is one of ABS, PC, PA, POM or PBT resin, and the second material is one of silicone rubber, TPE or TPR.

In one embodiment, the key cap comprises a pressing cap and a pin, the pin is connected with the pressing cap and extends towards the arrangement direction of the tact switch piece, and the key sleeve is wrapped on the periphery of the pin; the pins are arranged corresponding to the contacts of the tact switch piece; the cross-sectional area of the pin is smaller than the cross-sectional area of the push cap. The cross-sectional shape of the pins is circular, elliptical, polygonal or triangular.

In some embodiments, the ratio of the distance between the outer surface of the pressing cap and the pin end face to the distance between the outer surface of the pressing cap and the contact surface is 0.3 to 0.95, preferably the ratio of the distances is 0.4.

In one embodiment, the key cap includes a pressing head connected to an end of the pin remote from the pressing cap, the pressing head having a cross-sectional area greater than a cross-sectional area of the pin. The cross section of the pressing head is circular, elliptical, polygonal or triangular.

The application provides electronic equipment, which comprises a display screen module, a shell and a control circuit board; 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, the key cap and the key sleeve are respectively made of the first material and the second material, and the elastic modulus of the first material is larger than that of the second material, and the key cap with the larger elastic modulus deforms smaller under the same pressure, so that the pressing deformation of the key assembly is reduced, and a user can apply smaller pressing force to trigger the tact switch piece, so that user experience is 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 provided in the present application;

FIG. 2 is a schematic diagram of an embodiment of a conventional key assembly;

FIG. 3 is a schematic structural diagram of another embodiment of a key assembly provided in the present application;

FIG. 4 is a schematic structural view of a key assembly according to another embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of an embodiment of an electronic device provided herein;

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 schematic block diagram illustrating the structural components of an embodiment of the electronic device of the present application.

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 the embodiments of the present application 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 the embodiments of the present application 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 the embodiments of the present application are intended to cover non-exclusive inclusions. 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 application provides a key assembly. Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a key assembly provided in the present application. The key assembly 100 may include a key cap 10 and a key case 20, one end of the key case 20 is connected to the key cap 10, and the opposite end of the key case 20 is correspondingly provided with a tact switch member 30, and the key cap 10 pushes the key case 20 to trigger the tact switch member 30 when receiving a pressing force. The key cover 20 is used for waterproofing of the key assembly 100. The key cap 10 and the key cover 20 are made of a first material and a second material respectively, and the elastic modulus of the first material is greater than that of the second material.

The first material may be one of ABS (acrylonitrile-butadiene-styrene copolymer), PC (polycarbonate), PA (polyamide), POM (polyoxymethylene) or PBT (polybutylene terephthalate) resin, and the second material may be one of silicone rubber, TPE (thermoplastic elastomer) or TPR (thermoplastic rubber). ABS is excellent in heat resistance, impact resistance, low temperature resistance, chemical resistance and electrical properties; 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 POM has high strength, high rigidity and good wear resistance; the PBT has high hardness and strong ageing resistance, and does not fade after being colored by a dip dyeing process. ABS, PC, PA, POM, PBT all have a relatively high hardness and therefore a relatively high modulus of elasticity and little deformation under compression. 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.

The key cap 10 and the key sleeve 20 are made of two materials with different elastic moduli, so that the respective advantages of the key cap 10 and the key sleeve can be fully exerted, the waterproof performance of the key assembly 100 is facilitated by the material with relatively low elastic modulus, the pressing force is facilitated to be transferred by the material with relatively high elastic modulus, and the hand feeling of a user is improved.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of a conventional key assembly. The conventional key assembly 300 is provided with a waterproof pressing portion 310, one end of the waterproof pressing portion 310 is correspondingly provided with a tact switch 30, and the waterproof pressing portion 310 triggers the tact switch 30 when receiving a pressing force. The waterproof pressing portion 310 is made of a flexible waterproof material, and the flexible waterproof material is greatly deformed when being pressed, so that a user needs to apply a large pressing force to trigger the tact switch member, and the user feel is poor.

According to the key assembly 100, the key cap 10 and the key sleeve 20 are respectively made of the first material and the second material, and the elastic modulus of the first material is larger than that of the second material, and the key cap 10 with the larger elastic modulus deforms smaller under the same pressure, so that the pressing deformation of the key assembly 100 is reduced, and a user can apply smaller pressing force to trigger the tact switch piece 30, so that the user experience is improved.

In one embodiment, the key cap 10 includes a pressing cap 11 and pins 12, as shown in fig. 3, and fig. 3 is a schematic structural view of another embodiment of the key assembly provided in the present application. The pins 12 are connected with the pressing cap 11 and extend in the direction in which the tact switch member 30 is arranged, the key cover 20 is wrapped around the outer periphery of the pins 12, and the cross-sectional area of the pins 12 is smaller than that of the pressing cap 11. To facilitate triggering of the tact switch 30, the pins 12 are arranged in correspondence with the contacts 31 of the tact switch 30.

The pins 12 extending in the direction of the tact switch member 30 are provided, so that the thickness of the key cover 20 between the key cap 10 and the tact switch member 30 can be further reduced, the deformation of the key cover 20 when pressed is reduced, and the pressing force applied by the user can be effectively transmitted to the tact switch member 30.

In some embodiments, the distance d between the outer surface of the cap 11 and the end face of the pin 12 is pressed ₁ Distance d from the outer surface of the push cap 11 to the surface of the contact 31 ₂ The ratio may be 0.3 to 0.95. Specifically, the ratio may be 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, and the like. When the ratio is within the above range, the user pressing experience can be effectively improved. Preferably, in one embodiment, the distance d between the outer surface of the pressing cap 11 and the end face of the pin 12 ₁ To press the outer surface of the cap 11 into contactDistance d between the surfaces of points 31 ₂ The ratio was 0.4.

The cross-sectional shape of the pins 12 may be circular, elliptical, polygonal, triangular, etc., although the cross-sectional shape of the pins 12 may be any other shape.

In one embodiment, the key cap 10 further includes a pressing head 13, as shown in fig. 4, and fig. 4 is a schematic structural diagram of another embodiment of the key assembly provided in the present application. The pressing head 13 is connected to the end of the pin 12 remote from the pressing cap 11, and the cross-sectional area of the pressing head 13 is larger than that of the pin 12. Since the cross-sectional area of the pressing head 13 is larger than that of the pins 12, the pressing area for transmitting the pressing force to the contacts 31 is increased, so that the key cap 10 can trigger the tact switch 30 more effectively.

The cross-sectional shape of the pressing head 13 may be circular, elliptical, polygonal, triangular, or the like.

Referring to fig. 5 and fig. 6 together, fig. 5 is a schematic structural diagram of an embodiment of the electronic device provided in the present application, 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 an electronic device of the present application, where the electronic device may be a mobile phone, a tablet computer, a notebook computer, a wearable device, and the like. 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 used for receiving and transmitting wifi signals, and the processor 98 is used for processing 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 application has the following beneficial effects:

1. by setting the key cap 10 and the key cover 20 as the first material and the second material respectively, and the elastic modulus of the first material is greater than that of the second material, the pressing deformation of the key assembly 100 is reduced, and the user can trigger the tact switch member 30 by applying a smaller pressing force.

2. The key cap 10 is provided with the pins 12 extending in the direction in which the tact switch 30 is arranged, so that the thickness of the key cover 20 between the key cap 10 and the tact switch 30 can be reduced, the deformation of the key cover 20 when pressed can be further reduced, and the pressing force applied by the user can be effectively transmitted to the tact switch 30.

3. The cross-sectional area of the pressing head 13 is set larger than that of the pins 12, increasing the pressing area for transmitting the pressing force to the contacts 31, so that the key cap 10 can trigger the tact switch member 30 more effectively.

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:

the key comprises a key cap and a key sleeve, wherein one end of the key sleeve is connected with the key cap, a light touch switch piece is correspondingly arranged at the opposite end of the key sleeve, and the key cap pushes the key sleeve to trigger the light touch switch piece when being pressed by a pressing force;

the key cap and the key sleeve are made of a first material and a second material respectively, and the elastic modulus of the first material is greater than that of the second material.

2. The key assembly of claim 1, wherein the key cap includes a pressing cap and a pin connected to the pressing cap and extending in the direction in which the tact switch member is disposed, and the key cover is wrapped around the periphery of the pin.

3. The key assembly of claim 2, wherein the pins are disposed in correspondence with contacts of the tact switch member, the pins having a cross-sectional area smaller than a cross-sectional area of the pressing cap.

4. The key assembly of claim 2, wherein a ratio of a distance between an outer surface of the pressing cap and the pin end face to a distance between an outer surface of the pressing cap and a contact surface of the tact switch member is 0.3 to 0.95.

5. The key assembly of claim 4, wherein a ratio of a distance between an outer surface of the pressing cap and the pin end face to a distance between an outer surface of the pressing cap and the contact surface is 0.4.

6. The key assembly of claim 2, wherein the cross-sectional shape of the pins is circular, elliptical or polygonal.

7. The key assembly of claim 2, wherein the key cap includes a pressing head connected at an end of the pin remote from the pressing cap, the pressing head having a cross-sectional area greater than a cross-sectional area of the pin.

8. The key assembly of claim 7, wherein the cross-sectional shape of the pressing head is circular, elliptical or polygonal.

9. The key assembly of claim 1, wherein the first material is one of ABS, PC, PA, POM or PBT resin and the second material is one of silicone, TPE or TPR.

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.