CN115732252A - Key device and electronic equipment - Google Patents

Abstract

The invention discloses a key device, which comprises a first key cap with a mounting hole and a second key cap arranged in the mounting hole; the first keycap is arranged in the opening at the side wall of the installation shell; the installation shell is internally provided with a second trigger switch and a first trigger switch arranged at the position around the second trigger switch, the bottom of the second keycap is provided with a second trigger part, the bottom of the first keycap is provided with a first trigger part, and the first trigger part is distributed around the second trigger part. According to the invention, the plurality of keys are integrated, so that the occupation of the internal space and the external shell space of the electronic equipment is greatly reduced, and the electronic equipment is particularly suitable for being applied to small intelligent wearable equipment such as an intelligent watch, a bracelet and the like, so that the internal space of the product is saved while the functions of the keys are diversified, and the product has a simple appearance and is elegant and beautiful; the invention also discloses electronic equipment comprising the key device.

Description

Key device and electronic equipment

Technical Field

The present invention relates to a key device, and more particularly, to a key device in which two keys are integrated to save space; the invention also relates to electronic equipment, such as intelligent wearable equipment like intelligent bracelets and intelligent watches.

Background

Electronic equipment that people used daily, such as cell-phone, electronic watch, intelligent wrist-watch and intelligent bracelet etc. can dispose button, button and the knob etc. of a plurality of entity usually and be used for realizing some functions, like adjustment volume, roll screen, start, shut down etc. the existence of button makes the user need not to light and unlock the screen of equipment and can carry out some operations, has simplified equipment operation flow, has promoted user experience.

Along with the continuous popularization of intelligent electronic equipment, the hobbies and the requirements of consumers on equipment such as mobile phones, intelligent watches used daily are more diversified, for example, the equipment is required to be lighter, thinner and more portable, and the size is smaller and more exquisite and convenient to use. For mobile phones, many manufacturers try to design the side frames of the products as thin and thin as possible in order to pursue the lightness and thinness of the products; although the design meets the requirements of users on products to a certain extent, the area of the side frame is limited, and a plurality of keys are difficult to arrange so as to meet the use requirements of users. Although the existing multiple keys have comprehensive functions, the existing multiple keys occupy larger external and internal spaces of electronic equipment, and are difficult to apply to the electronic equipment with smaller volume. Therefore, it is necessary to optimize the key structure so that the occupied space is smaller.

Disclosure of Invention

An object of the present invention is to provide a new technical solution of a key device.

According to a first aspect of the present invention, there is provided a key device including:

the key comprises a first key cap and a second key cap, wherein a through mounting hole is formed in the middle of the first key cap, the second key cap is arranged in the mounting hole, and the top surface of the second key cap extends out of the first key cap from the mounting hole; the bottom end of the second keycap is provided with a second trigger part, the bottom end of the first keycap is provided with a first trigger part, and the first trigger part is distributed around the second trigger part;

the mounting shell is provided with an opening, the top surface of the first keycap extends out of the mounting shell from the opening, and the bottom surface of the first keycap is positioned inside the mounting shell;

the second trigger switch is arranged in the mounting shell and corresponds to the position of the second keycap, and the second keycap is used for triggering the second trigger switch;

the first trigger switch is arranged inside the mounting shell, the first trigger switch is arranged at the position around the second trigger switch, the first trigger switch corresponds to the position of the first trigger part, and the first keycap is used for triggering the first trigger switch.

Optionally, the mounting case further comprises a PCB board, and the PCB board is arranged inside the mounting case.

Further optionally, still include the PCB support, the PCB support is located inside the installation casing, and the both ends of PCB support can be dismantled with the inside wall of installation casing and be connected, and the recess form is buckled into to the mid portion of PCB support for place the PCB board.

Further optionally, the first trigger switch is a DOME piece or a tact switch, and the second trigger switch is a DOME piece or a tact switch; the bottom setting of PCB board one side orientation first key cap and second key cap, first trigger switch all fixes on locating this face with second trigger switch.

Optionally, both sides all outwards extend and form limit baffle about the bottom surface of first key cap, and first trigger part includes limit baffle.

Further optionally, the first trigger part further comprises two first salient points, and the two first salient points are respectively arranged at the bottoms of the tail ends of the two limit baffles; the number of the first trigger switches is two, and the positions of the two first trigger switches are respectively corresponding to the two first salient points.

Optionally, the bottom end side of the second keycap is circumferentially provided with a limiting skirt.

Further optionally, the second trigger portion includes a second protruding point, the second protruding point is disposed at a bottom surface of the second keycap, and the second protruding point corresponds to a position of the second trigger switch.

According to a second aspect of the present invention, an electronic device is provided, which includes an operating circuit board and the key device described above, wherein the operating circuit board is disposed inside the mounting housing and electrically connected to the PCB.

Optionally, the electronic device is specifically an intelligent wearable device, the installation shell is detachably provided with a wrist strap, a display screen is fixedly arranged at the top face of the installation shell, and the display screen is electrically connected with the working circuit board.

According to the key device provided by the invention, the first key cap and the second key cap are integrated into a whole, so that two-in-one key function is realized, the area occupied by the key caps is reduced, the internal space of electronic equipment is saved, the light weight and portable design is facilitated, and the product is concise in appearance and attractive and elegant in appearance.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is an exploded view of a key device according to an embodiment of the present invention.

Fig. 2 is a schematic external structural diagram of a key device according to an embodiment of the present invention.

Fig. 3 is a side cross-sectional view of a key device according to an embodiment of the invention.

Description of the reference numerals

In the figure: 1-a first keycap, 11-a limiting baffle, 111-a first salient point, 2-a second keycap, 22-a limiting skirt edge, 222-a second salient point, 3-an installation shell, 4-a PCB, 5-a first trigger switch, 6-a second trigger switch, 7-a PCB support and 8-a bolt.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

The present embodiment provides a key device, which is suitable for various electronic devices, such as a smart phone, a smart watch, a smart bracelet, and the like. Taking application to a smart watch as an example, as shown in fig. 1 to 3, the key device provided in this embodiment includes an installation housing 3, that is, an outer shell of the smart watch, an opening is formed in a sidewall of the installation housing 3 for placing a key, and the sidewall provided with the opening generally needs to avoid one side of a wrist band where the smart watch is located, so as to facilitate operation of the key; the first keycap 1 is arranged in the opening of the mounting shell 3, the outline of the first keycap 1 is generally required to be matched with the outline of the opening, so that the problem that water, dust and the like enter the mounting shell 3 to influence the normal work of the watch due to the large gap is avoided, the first keycap 1 and the mounting shell 3 cannot be too tightly attached to each other, otherwise, the first keycap 1 and the mounting shell 3 are worn after long-term use, and the feeling of unsmooth feeling and poor hand feeling are generated during pressing; as shown in fig. 1, it can be seen that the first key cap 1 in this embodiment is substantially in the shape of a rectangular parallelepiped with rounded chamfers on the upper and lower surfaces and a radian on the top surface, i.e. the surface facing the outside of the mounting case 3, which can prevent the key cap from having too many corners, and has a good hand feeling during pressing without hurting the hand; in order to prevent the first keycap 1 from being pulled out of the opening, the upper and lower sides of the bottom surface of the first keycap 1 are extended outwards to form a limiting baffle 11, and when the first keycap 1 moves towards the outer side of the mounting shell 3, the limiting baffle 11 is clamped on the inner side wall of the mounting shell 3 to prevent the first keycap 1 from being pulled out; as shown in fig. 1 to 3, a mounting hole perpendicular to the side wall of the mounting housing 3 is formed in the middle of the first keycap 1, a second keycap 2 is arranged in the mounting hole, and the outer contour of the second keycap 2 is matched with the mounting hole and is cylindrical; because the second keycap 2 is arranged in the mounting hole in the first keycap 1, in order to prevent the pressing hand feeling from being sluggish and the two from being abraded due to the larger friction force between the second keycap 2 and the first keycap 1, the second keycap 2 and the inner wall of the mounting hole can not be over-fitted, but a tiny gap is required to be formed, and the gap can also prevent the second keycap 2 from being driven to move together to generate false touch when the first keycap 1 is pressed or the first keycap 1 from being driven to move together to generate false touch when the second keycap 2 is pressed due to the overlarge friction force between the two; the top end of the second keycap 2 extends out of one side of the outer side of the first keycap 1 instead of being parallel to the side, so that a user can distinguish the keycaps conveniently, the press is convenient, and the mistaken touch is prevented; the side wall of the bottom end of the second keycap 2 is circumferentially provided with a limiting skirt 22 which plays a role of mainly limiting the displacement of the second keycap 2 and preventing the second keycap 2 from sliding out of the mounting hole;

the key device provided by the embodiment is provided with a PCB 4, a second trigger switch 6 and two first trigger switches 5 to respond to key operation, wherein the PCB 4, the first trigger switch 5 and the second trigger switch 6 are all arranged in the inner space of the installation shell 3 and are fixed at fixed positions, the first trigger switch 5 and the second trigger switch 6 are both electrically connected with the PCB 4, and the first trigger switch 5 is arranged at a position around the second trigger switch 6; in practical use, the number of the first trigger switches 5 is determined according to actual requirements, and may be one, or may be multiple, and the first trigger switches 5 are distributed around the second trigger switch 6, which specifically means that one or more first trigger switches 5 are arranged beside the second trigger switch 6, especially when there are multiple first trigger switches 5, the multiple first trigger switches 5 are arranged beside the second trigger switch 6 in a surrounding and surrounding manner; the bottom of the first keycap 1 is provided with a first trigger part for pressing and triggering the first trigger switch 5, the bottom of the second keycap 2 is provided with a second trigger part for pressing and triggering the second trigger switch 6, the first trigger part is distributed around the second trigger part, and particularly, the first trigger part comprises the limit baffle 11.

In this embodiment, specifically, there are two first trigger switches 5, one second trigger switch 6, two first trigger switches 5 are respectively arranged corresponding to the positions of the two limit baffles 11, and the second trigger switch 6 is arranged corresponding to the position of the bottom of the second keycap 2; as shown in fig. 1 to 3, since the application object of this embodiment is a smart watch, the internal space of which is relatively compact, a DOME piece is selected as a specific form of the first trigger switch 5 and the second trigger switch 6, the DOME piece has the advantages of being small, exquisite, light, small in required pressing trigger force, short in pressing trigger stroke, good in hand feeling, and capable of having a rapid automatic rebounding function, and being directly integrated on the PCB 4, so that the occupied space of the key device is further reduced, and the smart watch is very suitable for smart wearable devices, especially smart watches with small volumes, and in addition, since the smart watch is usually worn on the wrist of a user, the smart watch frequently shakes and vibrates due to the daily activities of the user, and since the DOME piece is directly integrated on the PCB 4, additional cable connection is not required, and a situation that the cable is frequently disconnected from a welding point due to shaking and vibration during daily use, further causing key failure can be avoided; besides the DOME chip, the first trigger switch 5 and the second trigger switch 6 in this embodiment have many other alternative specific forms, such as a tact switch; if the key device provided by the present embodiment is applied to an electronic device with a relatively abundant interior space, the first trigger switch 5 and the second trigger switch 6 may be optionally not directly integrated on the PCB 4, but separately disposed and connected to the PCB 4 through a cable, but it should be noted that, regardless of the arrangement form, the positions of the first trigger switch 5 and the second trigger switch 6 are usually fixed, so as to prevent the first key cap 1 and the second key cap 2 from being displaced due to pressing, which in fact cannot effectively press and trigger the corresponding first trigger switch 5 and second trigger switch 6;

the button device that this embodiment provided, through setting up the operating circuit of adjusting PCB board 4, integrated microprocessor etc. makes this button device's intelligent wrist-watch can have multiple different operating logic, for example:

the upper half part of the first keycap 1 is pressed for a long time, and a first trigger part positioned on the upper half part of the first keycap 1 presses and triggers a corresponding first trigger switch 5, so that the watch screen rolls upwards;

the second key cap 2 in the middle is pressed for a short time, a second trigger part at the bottom end of the second key cap 2 presses and triggers a second trigger switch 6, and different functions such as long-time pressing and short-time pressing can be achieved according to the arrangement of the PCB 4, for example, long-time pressing is turned off, short-time pressing is turned off, and the like;

the latter half of first key cap 1 is pressed to the length, and the first trigger part that is located the latter half of first key cap 1 presses the first trigger switch 5 that triggers the correspondence, realizes that the wrist-watch screen rolls downwards.

To sum up, the button device that this embodiment provided integrates a plurality of buttons as an organic whole, has reduced the inside and the surface space of the electronic equipment who occupies greatly, is particularly useful for small-size intelligent wearing equipment such as the than little size square wrist-watch of size or bracelet, has saved product inner space, and the outward appearance is succinct, elegant appearance.

In this embodiment, as shown in fig. 1 to 3, a PCB support 7 is preferably disposed inside the mounting housing 3, the PCB support 7 is substantially shaped like a Chinese character ji, the upper and lower ends of the PCB support 7 are detachably connected to the inner side wall of the mounting housing 3 above and below the opening, respectively, the middle portion of the PCB support is bent into a groove shape for placing the PCB 4, and when the PCB 4 is placed in the groove, the PCB can be fixed by various means, such as screwing of the bolt 8, bonding of glue, and the like; the purpose of setting up this PCB support 7 mainly lies in: because a typical application scenario of the key device provided by the embodiment is for a smart watch, the smart watch is difficult to avoid shaking in daily use, the PCB support 7 is placed to support, protect and fix the PCB 4, so that the PCB 4 is prevented from shaking due to external force to cause unstable electrical connection with the first trigger switch 5 and the second trigger switch 6 and a working circuit board of the smart watch, and the PCB 4 is also prevented from shaking to cause that the first key cap 1 and the second key cap 2 cannot be effectively pressed to trigger the corresponding first trigger switch 5 and the second trigger switch 6; secondly, the PCB 4 is convenient to replace and maintain; thirdly, the PCB 4 is conveniently fixed, when the first trigger switch 5 and the second trigger switch 6 are integrated on the PCB 4, the PCB 4 can be prevented from being displaced due to the pressing force transmitted by the first keycap 1 and the second keycap 2, and the contact between the first keycap 1 and the second keycap 2 and the corresponding first trigger switch 5 and second trigger switch 6 is influenced;

in the preferred scheme, the detachable connection form of the inner side wall of the PCB support 7 and the mounting shell 3 is various, for example, raised heads are arranged at two ends of the PCB support 7, clamping grooves are arranged at corresponding positions of the inner side wall of the mounting shell 3, and the PCB support and the mounting shell are in mortise-tenon connection, for example, as shown in FIGS. 1 to 3, through holes are arranged at two ends of the PCB support 7, a bolt 8 is respectively penetrated through the two through holes, a threaded hole is respectively arranged at corresponding positions of the inner side wall of the mounting shell 3 and the through holes at two ends of the PCB support 7, and the two bolts 8 are respectively in threaded connection with the threaded holes at the same side;

when the above preferred scheme is adopted, an optional scheme flow of the key device provided by the embodiment during assembly is substantially as follows:

step 1: the top surface of the first keycap 1 faces the outer side of the mounting shell 3, and is arranged in an opening at the side wall of the mounting shell 3 from the inner side of the mounting shell 3;

step 2: the top surface of the second keycap 2 faces the outer side of the mounting shell 3, and is arranged in the mounting hole on the first keycap 1 from the bottom surface of the first keycap 1 from the inner side of the mounting shell 3;

and step 3: placing the PCB 4 integrated with the first trigger switch 5 and the second trigger switch 6 in the installation shell 3, and during placement, paying attention to the fact that the first trigger switch 5 on the upper side is aligned with the position of the bottom surface of the upper half part of the first keycap 1, the first trigger switch 5 on the lower side is aligned with the position of the bottom surface of the lower half part of the first keycap 1, and the second trigger switch 6 is aligned with the position of the bottom surface of the second keycap 2;

and 4, step 4: aligning through holes at two ends of the PCB support 7 with an upper threaded hole and a lower threaded hole at the inner side wall of the mounting shell 3 and attaching the through holes, and simultaneously mounting the PCB 4 at a concave part in the middle of the PCB support 7;

and 5: and (4) screwing a screw into each of the two threaded holes in the step (4), and firmly connecting the PCB bracket 7 with the inner side wall of the mounting shell 3 through the screw.

In this embodiment, preferably, as shown in fig. 1 to 3, the upper first trigger switch 5 is disposed at the end of the limit stop 11 close to the upper half of the first key cap 1, the lower first trigger switch 5 is disposed at the end of the limit stop 11 close to the lower half of the first key cap 1, two limit stops 11 are respectively provided with one first salient point 111 at the corresponding position of the respectively close first trigger switch 5, and the first trigger part includes both the limit stop 11 and the corresponding first salient point 111; the purpose of the above design is mainly: when pressing first key cap 1's first half and lower half, the displacement of the limit baffle 11 at its bottom both ends is most obvious, locates first trigger switch 5 here, combines the bump of limit baffle 11 bottom, can save the pressure degree, also can guarantee first trigger portion and press the response sensitivity that triggers, avoids appearing pressing the back first trigger portion and can't effectively push down first trigger switch 5, leads to pressing the condition emergence that does not obtain the response.

In this embodiment, preferably, a second bump 222 is arranged at the bottom surface of the second 1 keycap, the second trigger part includes the second bump 222, and the second bump 222 is arranged corresponding to the position of the second trigger switch 6; the second bump 222 is used for intensively pressing and triggering the second trigger switch 6, so that the triggering key stroke is short and the pressing and triggering effect is better.

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. A key device, comprising:

the key structure comprises a first key cap and a second key cap, wherein a through mounting hole is formed in the middle of the first key cap, the second key cap is arranged in the mounting hole, and the top surface of the second key cap extends out of the first key cap from the mounting hole; the bottom end of the second keycap is provided with a second trigger part, the bottom end of the first keycap is provided with a first trigger part, and the first trigger part is distributed around the second trigger part;

the mounting shell is provided with an opening, the top surface of the first keycap extends out of the mounting shell from the opening, and the bottom surface of the first keycap is positioned inside the mounting shell;

the second trigger switch is arranged in the mounting shell and corresponds to the position of the second keycap, and the second keycap is used for triggering the second trigger switch;

the first trigger switch is arranged inside the mounting shell, the first trigger switch is arranged at the position around the second trigger switch, the first trigger switch corresponds to the position of the first trigger part, and the first keycap is used for triggering the first trigger switch.

2. The key device of claim 1, further comprising a PCB board disposed inside the mounting housing.

3. The key device of claim 2, further comprising a PCB bracket, wherein the PCB bracket is disposed inside the mounting housing, two ends of the PCB bracket are detachably connected to the inner sidewall of the mounting housing, and a middle portion of the PCB bracket is bent into a groove for accommodating the PCB.

4. The key device according to claim 2, wherein the first trigger switch is a DOME piece or a tact switch, and the second trigger switch is a DOME piece or a tact switch; one side of the PCB faces to the bottom ends of the first keycap and the second keycap, and the first trigger switch and the second trigger switch are fixedly arranged on the side.

5. The key device according to claim 1, wherein the upper side and the lower side of the bottom surface of the first key cap extend outwards to form a limiting baffle, and the first trigger part comprises the limiting baffle.

6. The key device according to claim 5, wherein the first triggering portion further comprises two first protruding points, and the two first protruding points are respectively arranged at the bottoms of the tail ends of the two limiting baffles; the number of the first trigger switches is two, and the positions of the two first trigger switches are respectively corresponding to the two first bumps.

7. The key device as claimed in claim 1, wherein a side surface of the bottom end of the second key cap is circumferentially provided with a limiting skirt.

8. The key device of claim 7, wherein the second trigger portion comprises a second raised point, the second raised point is disposed on a bottom surface of the second key cap, and the second raised point corresponds to a position of the second trigger switch.

9. An electronic device, comprising a working circuit board and the key device according to any one of claims 1 to 8, wherein the working circuit board is disposed inside the mounting housing and electrically connected to the PCB board.

10. An electronic device according to claim 9, in particular a smart wearable device.

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