CN214588543U

CN214588543U - Key device and electronic equipment

Info

Publication number: CN214588543U
Application number: CN202121066957.8U
Authority: CN
Inventors: 周伟彪
Original assignee: Tencent Technology Shenzhen Co Ltd
Current assignee: Tencent Technology Shenzhen Co Ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-02
Anticipated expiration: 2031-05-18

Abstract

The application discloses button device and electronic equipment belongs to the electron device field. The device comprises a shell, a key assembly, a sensor assembly, an elastic piece and a plurality of electromagnets; the wall of the shell is provided with a jack, the inner wall of the shell is provided with a groove, and the groove is opposite to the jack; the key assembly is magnetic, and is movably inserted in the jack, one part of the key assembly is positioned outside the shell, and the other part of the key assembly is positioned in the shell; the sensor assembly comprises a printed circuit board and a sensing module, the printed circuit board is sealed at the notch of the groove in a sealing mode, and the sensing module is located in the groove and connected with the printed circuit board so as to detect the moving stroke of the key assembly; the electromagnet is positioned in the groove and connected with the printed circuit board; the elastic element is connected with a plate surface of the printed circuit board far away from the sensing module, and the elastic element is clamped between the printed circuit board and the key assembly. The damping that this application can change when being pressed feedbacks to satisfy different users' demand.

Description

Key device and electronic equipment

Technical Field

The application belongs to the field of electronic devices, and particularly relates to a key device and electronic equipment.

Background

The game mobile phone is an electronic device with strong performance, and can well run various game programs. For some games with complicated operations, the requirement cannot be met only by touching the screen with fingers. Therefore, a button device is usually disposed at a side of the game handset to assist the user in operating.

In the related art, the key device mainly includes a key and a switch module, and a user presses the key to trigger the switch module to output an electrical signal, thereby performing a corresponding operation.

However, when the user presses the key device, the tactile feedback received by the finger is single, and the requirements of different users cannot be met.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a key device, which can change the damping fed back when being pressed, thereby meeting the requirements of different users. The technical scheme is as follows:

in a first aspect, an embodiment of the present application provides a key device, including a housing, a key assembly, a sensor assembly, an elastic member, and a plurality of electromagnets;

the shell wall of the shell is provided with a jack, and the inner wall of the shell is provided with a groove which is opposite to the jack;

the key assembly is magnetic, and is movably inserted into the jack, one part of the key assembly is positioned outside the shell, and the other part of the key assembly is positioned inside the shell;

the sensor assembly comprises a printed circuit board and a sensing module, the printed circuit board is sealed at the notch of the groove, and the sensing module is positioned in the groove and connected with the printed circuit board so as to detect the moving stroke of the key assembly;

the electromagnet is positioned in the groove and is connected with the printed circuit board;

the elastic piece is connected with a board surface of the printed circuit board, which is far away from the sensing module, and the elastic piece is clamped between the printed circuit board and the key assembly.

In a second aspect, an embodiment of the present application provides an electronic device, including a key device and a housing;

the key device is the key device described above, and the key device is connected with the inner wall of the shell and is close to the edge of the shell.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

when a user performs an operation through the key device provided by the embodiment of the application, the key assembly is pressed, so that the key assembly moves towards the inside of the shell, and the elastic piece is compressed. During compression of the spring, the user receives a tactile feedback with damping, since the printed circuit board is able to provide support to the spring. By energizing the electromagnet, the electromagnet can be caused to apply a magnetic force to the key assembly. When the magnetism of the electromagnet is repelled from the magnetism of the key assembly, the damping of the tactile feedback received by the user is increased, and when the magnetism of the electromagnet is attracted to the magnetism of the key assembly, the damping of the tactile feedback received by the user is decreased.

In addition, in the process of moving the key assembly, the sensing module can detect the stroke of the key assembly in real time and output different electric signals according to different strokes, so that a user can execute various operations by controlling the stroke of pressing the key assembly.

That is to say, the key device provided by the embodiment of the application can change the damping fed back when being pressed according to the requirements of users, thereby meeting the requirements of different users.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a key device according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of an elastic member provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view of a spring provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a key device according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating interaction between a first key module and a second key module provided in an embodiment of the present application.

The symbols in the drawings represent the following meanings:

1. a housing; 11. a jack; 12. a groove; 13. a slide hole; 14. a pivoting seat;

2. a key assembly; 21. a first key module; 211. a first magnet group; 22. a second key module; 221. a second magnet group;

3. a sensor assembly; 31. a printed circuit board; 32. a sensing module;

4. an elastic member; 41. a contact post; 42. a circular truncated cone is connected; 43. a support ring;

5. an electromagnet;

6. a swing plate; 61. a guide plate; 62. a pivoting plate;

7. a sliding key;

100. a key device; 200. a housing.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the related art, the key device is mainly divided into two implementation schemes, namely a sensor scheme and a tact switch scheme. In the sensor scheme, a user's finger directly presses a sensing portion of a sensor (an ultrasonic sensor, a capacitive sensor, a pressure sensor, or the like), and the sensor outputs an electric signal by sensing the user's finger, thereby performing an operation. This solution, while capable of providing more sensitive feedback, does not provide the user with a true button press feel. For the touch switch scheme, the touch switch mainly comprises a key and a switch module, and a user presses the key to enable the key to trigger the switch module so as to output an electric signal and execute corresponding operation. Although the scheme can provide a real button pressing hand feeling for a user, when the user presses the key device, the tactile feedback received by the fingers is single, and the requirements of different users cannot be met.

In order to solve the above technical problem, an embodiment of the present application provides an electronic device, which may be a game mobile phone, a general mobile phone, or the like. Fig. 1 is a schematic structural diagram of the electronic device, and as shown in fig. 1, the electronic device includes a key device 100 and a housing 200, the key device 100 is connected to an inner wall of the housing 200 and is close to an edge of the housing 200, and the key device can change damping fed back when being pressed, so as to meet requirements of different users.

Fig. 2 is a schematic structural diagram of a key device, and referring to fig. 2, in this embodiment, the key device includes a housing 1, a key assembly 2, a sensor assembly 3, an elastic member 4, and a plurality of electromagnets 5. It should be noted that, in order to better show the internal structure of the key device, the housing 1 is partially cut away in fig. 2.

The wall of the housing 1 has a receptacle 11 and the inner wall of the housing 1 has a recess 12, the recess 12 being opposite the receptacle 11. The key assembly 2 has magnetism, and the key assembly 2 is movably inserted into the insertion hole 11, and one part of the key assembly 2 is located outside the casing 1, and the other part of the key assembly 2 is located inside the casing 1. Sensor assembly 3 includes a printed circuit board 31 and a sensor module 32, where printed circuit board 31 covers the notch of recess 12, and sensor module 32 is located in recess 12 and connected to printed circuit board 31 to detect the movement stroke of key assembly 2. The electromagnet 5 is positioned in the groove 12 and is connected with the printed circuit board 31. The elastic member 4 is connected to a surface of the printed circuit board 31 away from the sensing module 32, and the elastic member 4 is sandwiched between the printed circuit board 31 and the key assembly 2.

When a user performs an operation through the key device provided in the embodiment of the present application, the key assembly 2 is pressed, so that the key assembly 2 moves toward the inside of the casing 1, and the elastic member 4 is compressed. During compression of the spring 4, the user receives a tactile feedback with damping, since the printed circuit board 31 is able to provide support to the spring 4. By applying current to electromagnet 5, electromagnet 5 can apply magnetic force to key assembly 2. When the magnetism of electromagnet 5 repels the magnetism of key assembly 2, the damping of the tactile feedback received by the user increases, and when the magnetism of electromagnet 5 attracts the magnetism of key assembly 2, the damping of the tactile feedback received by the user decreases.

Since the magnetic poles of electromagnet 5 are variable, it can repel or attract each other with key assembly 2. Then, by rapidly changing the magnetic poles of electromagnet 5, key assembly 2 can be made to vibrate, thereby enriching the tactile feedback received by the user.

In addition, in the process of moving key assembly 2, sensing module 32 can detect the stroke of key assembly 2 in real time, and output different electrical signals according to different strokes, so that the user can perform various operations by controlling the stroke of pressing key assembly 2.

For example, if the key device corresponds to a shooting operation of a weapon in a game, when the user presses the key assembly 2 with a small amplitude, the sensing module 32 detects that the movement stroke of the key assembly 2 is small, and correspondingly outputs an electrical signal, and the operation performed in the game is shooting the weapon at one shot. When the user presses the key assembly 2 by a large amount, the sensing module 32 detects that the movement stroke of the key assembly 2 is large, and correspondingly outputs another electric signal, and the operation performed in the game is the firing of a weapon. It is easy to understand that the key device can also correspond to different operations in the game according to the selection of the user, for example, controlling the depth of the accelerator, controlling the striking strength, controlling the bouncing height, etc., which is not limited in this application.

In addition, since the electrical signal output from the key device is directly related to the movement stroke of the key assembly 2, the sensitivity of the key device can be adjusted by setting a trigger threshold. For example, if the sensitivity of the key device needs to be adjusted to be high, the operation can be performed by setting the movement stroke of the key assembly 2 corresponding to the trigger threshold to be small, that is, by setting the electric signal corresponding to the small movement stroke. If the sensitivity of the key device needs to be adjusted to be low, the operation can be executed only by setting the movement stroke of the key assembly 2 corresponding to the trigger threshold to be larger, that is, by setting the electrical signal corresponding to the larger movement stroke.

Referring to fig. 2 again, in the present embodiment, there are a plurality of electromagnets 5, the plurality of electromagnets 5 are uniformly arranged around the sensing module 32, and the orthographic projections of the plurality of electromagnets 5 on the printed circuit board 31 are located in the orthographic projection of the key assembly 2 on the printed circuit board 31.

In the above implementation, the plurality of electromagnets 5 are designed, so that the electromagnets 5 can apply a more uniform magnetic force to the key assembly 2. In addition, since each electromagnet 5 is arranged around the sensing module 32, the electromagnet 5 does not interfere with the sensing module 32, and the reliability of the key device is ensured. The orthographic projection of the electromagnets 5 on the printed circuit board 31 is positioned in the orthographic projection of the key assembly 2 on the printed circuit board 31, so that the compact arrangement of the electromagnets 5 is ensured, and the miniaturization design of the key device is facilitated.

From the foregoing, it is important that the sensing module 32 of the key device can detect the moving stroke of the key assembly 2, so that the user can perform different operations through the key device. The cooperation between sensing module 32 and key assembly 2 is described below.

Referring to fig. 2 again, in the present embodiment, the sensor module is a hall sensor, and the key assembly 2 has magnetism. In the process of moving the key assembly 2, the magnetic force lines of the key assembly 2 pass through the hall sensor, and along with the change of the moving stroke of the key assembly 2, the intensity of the magnetic force lines changes correspondingly, and the hall sensor outputs corresponding electric signals according to the detected change.

In other embodiments, the sensing module 32 is a pressure sensor, in which case the key assembly 2 need not have magnetic properties. During the movement of key assembly 2, elastic member 4 is compressed and transmits a pressure to printed circuit board 31, so that printed circuit board 31 is deformed. The pressure sensor can detect the deformation of the printed circuit board 31 and output an electrical signal accordingly according to the degree of the deformation.

It should be noted that the pressure sensor is a patch pressure sensor, and the patch pressure sensor has a resistance strain gauge therein, and since the patch pressure sensor is attached to the printed circuit board 31, when the printed circuit board 31 is deformed, the resistance strain gauge is also deformed, thereby changing the resistance value of the resistance strain gauge. With this characteristic, the patch type pressure sensor senses deformation of the printed circuit board 31.

Alternatively, the orthographic projection of the sensing module 32 on the printed circuit board 31 is located within the orthographic projection of the elastic member 4 on the printed circuit board 31.

In the above implementation, the sensing module 32 and the elastic member 4 are arranged in such a way that the structure of the elastic member 4, the printed circuit board 31 and the sensing module 32 is compact, thereby facilitating the miniaturized design of the key device for facilitating the assembly in the electronic device.

As can be seen from the foregoing, since the key assembly 2 compresses the elastic member 4 when the key assembly 2 is pressed, the user receives the damping feedback, so that the user feels better in operation. Therefore, the elastic member 4 plays a key role in providing a good feeling, and the elastic member 4 will be described below.

Fig. 3 is a schematic structural diagram of the elastic member, and in conjunction with fig. 3, in the present embodiment, the elastic member 4 includes a contact column 41, a connecting boss 42 and a support ring 43. One end of the contact column 41 is connected with the end 42a with the smaller diameter of the connecting round platform 42, the other end of the contact column 41 is in contact with the key assembly 2, one end of the support ring 43 is connected with the end 42b with the larger diameter of the connecting round platform 42, and the other end of the support ring 43 is connected with the printed circuit board 31.

In the above implementation manner, the contact column 41 is used for abutting against the key assembly 2 to bear the pressure of the key assembly 2, the connecting circular truncated cone 42 is deformed after bearing the pressure to store elastic potential energy, and the support ring 43 is used for supporting the connecting circular truncated cone 42, so that the elastic element 4 is stably connected with the printed circuit board 31.

The elastic member 4 is illustratively a silicone member, a rubber member, a reed, or the like. Optionally, the contact column 41, the connecting boss 42 and the support ring 43 are an integral structure and have elasticity, so that the elastic potential energy storage capacity of the elastic part 4 is improved.

Fig. 4 is a sectional view of the elastic member 4, and in conjunction with fig. 4, alternatively, the connecting boss 42 is a hollow structural member, and one end 42a of the connecting boss 42 with a smaller diameter is closed.

In the above implementation manner, the connecting circular truncated cone 42 is designed as a hollow structural member, so that the connecting circular truncated cone 42 can be deformed conveniently, and the pressing stroke of the key assembly 2 is prevented from being affected due to insufficient deformation. In addition, since the end 42a of the connecting round table 42 having a small diameter directly receives the pressure transmitted from the contact post 41, the end is designed to have a closed structure, which not only improves the local structural strength, but also more uniformly receives the pressure from the contact post 41, thereby preventing the connecting round table 42 from tilting.

Since the key assembly 2 compresses the elastic member 4 when being pressed down, in order to ensure that the key assembly 2 can smoothly press down the elastic member 4, referring to fig. 2 again, the key device further includes a swing plate 6 in the present embodiment. The swing plate 6 is positioned in the shell 1, a first end of the swing plate 6 is pivoted with the inner wall of the shell 1, a pivoting axis between the swing plate 6 and the shell 1 is vertical to the moving direction of the key assembly 2, and a second end of the swing plate 6 is clamped between the key assembly 2 and the elastic piece 4.

Note that, in order to show key assembly 2 hidden by swing plate 6, swing plate 6 is partially cut away in fig. 2.

In the above-described embodiment, the first end of swing plate 6 serves as a rotation base of swing plate 6, and the swing direction of the second end of swing plate 6 is substantially the same as the moving direction of key assembly 2. When key assembly 2 is depressed, the second end of swing plate 6 is pushed to swing together, so that swing plate 6 can depress elastic member 4, causing elastic member 4 to compress. In the whole process of pressing down the key assembly 2, the key assembly 2 does not directly press down the elastic member 4, but presses down the elastic member 4 through the swing plate 6, which is equivalent to increase the contact area between the key assembly 2 and the elastic member 4, so that the key assembly 2 can stably press down the elastic member 4.

With continued reference to fig. 2, optionally, the inner wall of the housing 1 has a pivot seat 14, the pivot seat 14 being spaced from the receptacle 11. Swing board 6's first end has pin joint board 62, and the face of pin joint board 62 has the pin joint axle, and pin joint board 62 and pin joint axle all are located swing board 6 one side near button subassembly 2, and the pin joint axle is rotationally inserted and is established in pin joint seat 14.

The pivot base 14 provides a mounting base for the swing plate 6, and a pivot shaft on the pivot plate 62 is inserted into the pivot base 14, so as to realize the pivot connection between the swing plate 6 and the housing 1.

Moreover, since the pivot seat 14 is located between the pivot plate 62 and the swing plate 6, the space between the pivot plate 62 and the swing plate 6 is utilized to accommodate the pivot seat 14, which is more beneficial to the miniaturization design of the key device.

As can be seen from the foregoing, a portion of key assembly 2 is located outside housing 1 so that a user can press key assembly 2 toward the inside of housing 1. However, in some usage scenarios of the electronic device, such as running a game with simple operations or daily use, the auxiliary operations through the key assembly 2 are not required. At this time, key assembly 2 can be retracted inside housing 1 to reduce erroneous touch and improve the tidiness of the appearance of the electronic device.

To achieve the above object, the key device provided in the embodiment of the present application is further designed, fig. 5 is a schematic structural diagram of the key device, and with reference to fig. 5, in this embodiment, the wall of the housing 1 has a slide hole 13, and the slide hole 13 is elongated and extends along the length direction of the swing plate 6. The key device further comprises a sliding key 7, wherein the sliding key 7 is slidably inserted into the sliding hole 13, one part of the sliding key is positioned outside the shell 1, and the other part of the sliding key is positioned inside the shell 1. The key assembly 2 comprises a first key module 21 and a second key module 22 which are magnetic, the first key module 21 is inserted into the jack 11, the second key module 22 is opposite to the first key module 21 and is in sliding contact with the swinging plate 6, the second key module 22 is pivoted with the sliding key 7, and the pivoting axis between the second key module 22 and the sliding key 7 is parallel to the pivoting axis between the swinging plate 6 and the shell 1.

When the sliding key 7 drives the second key module 22 to be located at the first position, the magnetism of the first key module 21 and the magnetism of the second key module 22 repel each other, and when the sliding key 7 drives the second key module 22 to be located at the second position, the magnetism of the first key module 21 and the magnetism of the second key module 22 attract each other.

Note that, in order to show the second key module 22 hidden by the swing plate 6, a part of the swing plate 6 is cut away in fig. 2.

When the key assembly 2 needs to be pressed, the sliding key 7 is moved to the first position, so that the magnetism of the first key module 21 and the magnetism of the second key module 22 repel each other, and under the interaction of the magnetic force, a part of the first key module 21 is pushed out of the housing 1, so that a user can press the key assembly conveniently. When a user presses the first key module 21, although the first key module 21 and the second key module 22 are spaced apart from each other, due to the repulsive magnetic force between the first key module 21 and the second key module 22, the first key module 21 can push the second key module 22, so that the second key module 22 pushes the swing plate 6 to compress the elastic member 4.

When the key assembly 2 is not required to be pressed, the sliding key 7 is shifted to the second position, so that the magnetism of the first key module 21 and the magnetism of the second key module 22 are attracted, and the first key module 21 is sucked into the shell 1 and does not protrude outside under the interaction of the magnetic force. The second key module 22 does not move during the process of the first key module 21 being sucked into the housing 1, and therefore does not affect the elastic member 4.

Alternatively, the side edge of the swing plate 6 has a guide plate 61 in the direction perpendicular to the length direction of the swing plate 6, the guide plate 61 extends in the length direction of the swing plate 6, and the second key module 22 is in sliding contact with the guide plate 61.

The guide plate 61 can guide the second key module 22 so that the second key module 22 always moves along the guide plate 61, that is, along the longitudinal direction of the swinging plate 6.

Fig. 6 is a schematic interaction diagram of the first key module 21 and the second key module 22, and referring to fig. 6, in this embodiment, the first key module 21 includes a first magnet group 211, the first magnet group 211 includes three first sub-magnets, the three first sub-magnets are arranged along a moving direction of the second key module 22, and magnetic poles of the three first sub-magnets facing the second key module 22 are alternately changed. The second key module 22 includes a second magnet set 221, the second magnet set 221 includes three second sub-magnets, the three second sub-magnets are arranged along the moving direction of the second key module 22, and the magnetic poles of the three second sub-magnets facing the first key module 21 are changed alternately.

When the second key module 22 is in the first position, the polarities of the three first sub-magnets and the polarities of the three opposite second sub-magnets are the same, so that the first magnet group 211 and the second magnet group 221 repel each other. When the second key module 22 is located at the second position, the three first sub-magnets and the three second sub-magnets are staggered and do not correspond to each other one by one, and at this time, only two first sub-magnets are opposite to two second sub-magnets, and the polarities of the opposite first sub-magnets and the polarities of the opposite second sub-magnets are opposite, so that the first magnet group 211 and the second magnet group 221 are attracted to each other.

If the sensing module 32 is a hall sensor, the hall sensor senses the magnetic sensing line of the second magnet group 221.

The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A key device is characterized by comprising a shell (1), a key component (2), a sensor component (3), an elastic piece (4) and a plurality of electromagnets (5);

the shell wall of the shell (1) is provided with a jack (11), the inner wall of the shell (1) is provided with a groove (12), and the groove (12) is opposite to the jack (11);

the key assembly (2) is magnetic, the key assembly (2) is movably inserted into the insertion hole (11), one part of the key assembly is positioned outside the shell (1), and the other part of the key assembly is positioned inside the shell (1);

the sensor assembly (3) comprises a printed circuit board (31) and a sensing module (32), the printed circuit board (31) is covered at the notch of the groove (12), and the sensing module (32) is positioned in the groove (12) and connected with the printed circuit board (31) to detect the moving stroke of the key assembly (2);

the electromagnet (5) is positioned in the groove (12) and is connected with the printed circuit board (31);

the elastic piece (4) is connected with a board surface of the printed circuit board (31) far away from the sensing module (32), and the elastic piece (4) is clamped between the printed circuit board (31) and the key assembly (2).

2. A key device according to claim 1, characterised in that said electromagnets (5) are plural;

the electromagnets (5) are uniformly arranged around the sensing module (32), and the orthographic projection of the electromagnets (5) on the printed circuit board (31) is positioned in the orthographic projection of the key assembly (2) on the printed circuit board (31).

3. A key device according to claim 1 or 2, characterised in that it further comprises a swinging plate (6);

the swing plate (6) is positioned in the shell (1), the first end of the swing plate (6) is pivoted with the inner wall of the shell (1), and the swing plate (6) is pivoted with the shell (1)Axial line (L)₁) And the second end of the swinging plate (6) is clamped between the key assembly (2) and the elastic piece (4) and is vertical to the moving direction of the key assembly (2).

4. A key device according to claim 3, characterized in that the wall of the housing (1) has a slide hole (13), the slide hole (13) is elongated and extends along the length of the swing plate (6);

the key device further comprises a sliding key (7), wherein the sliding key (7) is slidably inserted into the sliding hole (13), one part of the sliding key is positioned outside the shell (1), and the other part of the sliding key is positioned inside the shell (1);

the key assembly (2) comprises a first magnetic key module (21) and a second magnetic key module (22), the first key module (21) is inserted into the jack (11), the second key module (22) is opposite to the first key module (21) and is in sliding contact with the swinging plate (6), the second key module (22) is pivoted with the sliding key (7), and the second key module (22) is pivoted with a pivoting axis (L) between the sliding keys (7)₂) Parallel to a pivoting axis (L) between the oscillating plate (6) and the housing (1)₁)；

The swing plate (6) is provided with a first position and a second position which are separated from each other, when the sliding key (7) drives the second key module (22) to be located at the first position, the magnetism of the first key module (21) and the magnetism of the second key module (22) are mutually repellent, and when the sliding key (7) drives the second key module (22) to be located at the second position, the magnetism of the first key module (21) and the magnetism of the second key module (22) are mutually attracted.

5. A key arrangement as claimed in claim 4, characterized in that the side edges of the oscillating plate (6) have guide plates (61), the guide plates (61) extending in the longitudinal direction of the oscillating plate (6), the second key module (22) being in sliding contact with the guide plates (61).

6. A key device according to claim 1, characterized in that said sensing module (32) is a hall sensor, or a pressure sensor.

7. A key device according to claim 1 or 2, characterized in that said elastic element (4) comprises a contact post (41), a connecting boss (42) and a support ring (43);

one end of the contact column (41) is connected with one end (42a) with smaller diameter of the connecting circular truncated cone (42), and the other end of the contact column (41) is in contact with the key assembly (2);

one end of the support ring (43) is connected with the end (42b) with the larger diameter of the connecting round platform (42), and the other end of the support ring (43) is connected with the printed circuit board (31).

8. A key device according to claim 7, characterized in that said connecting boss (42) is a hollow structure, and the end (42a) of said connecting boss (42) with smaller diameter is closed.

9. A key device according to claim 7, characterised in that the orthographic projection of said sensing module (32) on said printed circuit board (31) is located within the orthographic projection of said elastic element (4) on said printed circuit board (31).

10. An electronic apparatus, comprising a key device (100) and a housing (200);

the key device (100) according to any one of claims 1 to 9, wherein the key device (100) is connected to an inner wall of the housing (200) and is located near an edge of the housing (200).