Key for circuit board and keyboard

Abstract

The utility model relates to a key with a display function and a keyboard. The key comprises a key switch and a key cap, the key switch comprises a shell and a pressing handle, the key cap comprises a display screen, the display screen comprises a conductive pin, and an elastic conductive terminal capable of driving the key cap to reset is further arranged in the shell. The conductive pin extends into the shell through the pressing handle and is connected with the elastic conductive terminal, and the elastic conductive terminal is electrically connected with the display screen and the circuit board respectively. In addition, the utility model also provides a keyboard using the key. As the elastic conductive terminal has an elastic reset function, the electric connection structure between the elastic conductive terminal and the display screen and the circuit board can realize a relatively fixed state, and relatively stable electric connection is realized. Compared with the prior art, the structure is simple and compact, the manufacturing is simple, the compatibility is good, and the electrical connection performance of the display screen is stable.

Description

TECHNICAL FIELD

[0001] The utility model relates to input device technical field especially, it relates to a key and keyboard with display function. BACKGROUND

[0002] Mechanical keyboard is a common keyboard type, which is composed of multiple keys installed on a circuit board, and the key further includes a keycap and a key switch. According to the different conduction principles of the key switch, it can be roughly divided into contact type and non-contact type. In recent years, non-contact keyboards have become increasingly popular, mainly including light axis keyboards, inductive axis keyboards and magnetic axis keyboards. The keycaps used in the mainstream keyboards on the market, regardless of the type, include a keycap body and characters, which are directly formed by two-color injection molding or the keycap body is injection molded and then the characters are printed. The characters that the keycap can present are fixed at the time of factory shipment, and the content is single and lacks interactivity, which is difficult to meet the needs of users, especially the increasing diversification and personalization of e-sports players.

[0003] In order to overcome this problem, the prior art provides a variety of keycaps with display screens, and the electrical connection between the display screen and the circuit board is realized by a flexible flat cable, a wire and the like. The flexible flat cable method needs to set a special female seat on the circuit board, and this female seat needs to occupy a large space on the circuit board and can only be used for the display screen. This not only greatly increases the manufacturing difficulty and cost, but also greatly affects the replaceability. The wire method is generally used in thin film keyboards (i.e. without independent key switches), and the signal transmission line is arranged on an elastic member between the keycap and the thin film switch circuit. This method ignores the structural instability of the elastic member. As long as the elastic member is slightly displaced, the line will be blocked, and the reliability is low. For mechanical keyboards with independently set key switches, there is no such elastic member and the conductive wire cannot be arranged.

[0004] In addition, a new solution has recently appeared, that is, a through column is arranged on the circuit board, the display screen is independently mounted above the keycap, and a screen probe is arranged, and the screen probe is inserted into the through column to realize power supply of the display screen. The electrical connection mode of the screen probe and the through column is not easy to cause circuit interruption due to the up-down movement of the handle or the keycap relative to the flexible flat cable and the wire, but the defects of this structure are also very obvious: first, the through column arranged on the circuit board can only be used for the display screen, which increases the processing difficulty and manufacturing cost and lacks compatibility; second, since the screen probe and the through column are rigidly connected, when the display screen moves up and down with the keycap, the screen probe will inevitably rub up and down in the through column, and the electrical conductivity will be seriously damaged after long-term use, and the reliability is low; finally, since the screen probe and the through column are arranged outside the key switch in this scheme, they are completely exposed to the external space and cannot be protected by the shell of the key switch, and are easily affected by splashed water, air moisture and dust, thereby causing problems such as poor contact and unstable electrical conductivity. Content of the utility model

[0005] The technical problem to be solved by the utility model is to provide a key with display function and a keyboard using the key, which is simple and compact in structure, simple to manufacture, good in compatibility, and stable in electrical connection performance of the display screen.

[0006] In order to solve the above technical problem, the utility model adopts the technical scheme of:

[0007] A key for a circuit board is provided, which comprises a key switch arranged on the circuit board and a keycap arranged on the key switch, the key switch comprises a shell and a handle capable of moving up and down relative to the shell, the keycap is arranged on the handle, the keycap comprises a display screen, the display screen comprises a conductive pin, the shell further comprises an elastic conductive terminal capable of driving the keycap to reset, the conductive pin extends into the shell through the handle and is connected with the elastic conductive terminal, and the elastic conductive terminal is electrically connected with the display screen and the circuit board respectively.

[0008] After adopting such structure, one end of the elastic conductive terminal is electrically connected with the display screen, and the other end is electrically connected with the circuit board. Since the elastic conductive terminal has the elastic reset function, the electrically connected structure between the elastic conductive terminal and the display screen and the circuit board can be relatively fixed, and the relative displacement in the electrically connected structure will not occur due to the up and down movement of the key cap and the press handle, thereby realizing relatively stable electric connection. Compared with the prior art, a series of defects caused by the relative movement of the electrically connected part are avoided, and the conductive pin of the display screen and the elastic conductive terminal are arranged in the shell of the key switch, without occupying extra space, and the structure is compact. More importantly, compared with the exposed mode, the elastic conductive terminal is not easily affected by external water droplets, water vapor or dust, thereby further ensuring the effectiveness and reliability of the electric connection. In addition, the elastic reset function of the elastic conductive terminal can also be directly used to drive the conductive pin to reset the display screen and the key cap. Since the press handle is connected to the bottom of the key cap, the reset function of the press handle can be realized, the elastic reset member in the key switch is omitted, the internal structure of the key switch is further simplified, and the production and assembly difficulty is reduced.

[0009] As an improvement of the foregoing technical solution, the shell includes two elastic conductive terminals, the display screen includes two conductive pins, one end of the elastic conductive terminal is electrically connected with the conductive pin, and the other end is electrically connected with the circuit board. Two elastic conductive terminals are separately arranged to isolate the positive and negative poles, thereby avoiding the insulation design and production process challenges caused by the integrated elastic conductive terminal.

[0010] Further improvement, the elastic conductive terminal includes a conductive spring and a plug-in end and a pin end electrically connected to both ends of the conductive spring, the conductive pin of the display screen is inserted into the plug-in end, and the pin end is electrically connected with the circuit board. The conductive spring can realize the functions of conduction and reset at the same time, so that the plug-in end and the pin end can be electrically connected with the display screen and the circuit board in a relatively stable manner, thereby avoiding the relative displacement in the electrically connected structure caused by the up and down movement of the key, and affecting the conduction performance.

[0011] In order to improve the compatibility and replaceability of the key switch, a switch socket is attached to the bottom surface of the circuit board, the switch socket is electrically connected with the circuit board, and the pin end of the elastic conductive terminal is inserted into the switch socket. When the display screen, the key cap or the key switch is damaged, the user can conveniently remove the entire key from the circuit board and replace a new key, thereby greatly reducing the after-sales cost caused by frequent factory repair, and effectively improving the user experience. In addition, different keys with different hand feelings, key caps and even key switches with different conduction functions can be replaced according to needs, thereby meeting the DIY needs of some users.

[0012] Further preferably, the plug-in end comprises a first circular base and an elastic abutting part extending upwardly from the upper end of the first circular base, the conductive pin of the display screen can be inserted into the elastic abutting part to form at least double-sided electrical connection, and the upper end of the conductive spring is connected to the first circular base. The integrated plug-in end ensures the stability of the electrical connection, and the circular base is convenient for being clamped or welded to the conductive spring, the elastic abutting part can be stably connected with the conductive pin of the display screen, and the at least double-sided contact can further guarantee the reliability of the electrical connection.

[0013] Further preferably based on the same technical concept, the pin end comprises a second circular base and a pin extending downwardly from the lower end of the second circular base, the pin can be inserted into the switch socket to form at least double-sided electrical connection, and the lower end of the conductive spring is connected to the second circular base. The integrated pin end ensures the stability of the electrical connection, and the circular base is convenient for being clamped or welded to the conductive spring, the switch socket can be stably connected with the pin of the elastic conductive terminal, and the at least double-sided contact can further guarantee the reliability of the electrical connection.

[0014] In another improved scheme, the shell of the key switch is further provided with an elastic reset member capable of driving the reset of the handle, and the bottom of the handle extends downwardly to form a guide column which penetrates through the elastic reset member. The specifically provided elastic reset member increases the internal structure of the key switch, but the elastic reset member does not need to bear the conductive function, has a larger design space, and can more effectively realize the reset function of the handle and the key cap. At the same time, since the elastic conductive terminal no longer bears the reset function, the installation position and the spring design of the elastic conductive terminal are no longer restricted by the function, so that the conductive and connecting performance can be more effectively improved.

[0015] In a specific embodiment, the key switch further comprises a magnet which can move up and down along the guide column and a Hall element which is electrically connected to the circuit board. That is, the key switch is a magnetic conduction switch, and since the magnetic conduction switch does not need to use a conductive pin, the circuit board used by a contact type mechanical keyboard can be compatible in this scheme, effectively improving the compatibility and reducing the manufacturing cost of mold opening, process change and the like.

[0016] In another specific embodiment, the key switch further comprises a light emitting diode which is electrically connected to the circuit board, and when the handle moves up and down, the guide column or a light shielding member provided on the handle can conduct or block the light path formed by the light emitting diode. That is, the key switch is a light conduction switch, and similar to the magnetic conduction switch, the light conduction switch also does not need to use a conductive pin, and can be compatible with the circuit board used by a contact type mechanical keyboard, thereby achieving better compatibility and reducing the manufacturing cost of mold opening, process change and the like.

[0017] The application further provides a keyboard comprising a circuit board, wherein the keyboard further comprises at least one key as described in the above technical solution, and the key is electrically connected to the circuit board.

[0018] The features of the present application will be more apparent from the following drawings and detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is an exploded structural schematic view of a preferred embodiment of the key provided by the present application;

[0020] Figure 2 is an exploded structural schematic view of part of the components of Figure 1

[0021] Figure 3 is an exploded structural schematic view of part of the components of Figure 1

[0022] Figure 4 is a three-dimensional structural schematic view of Figure 1

[0023] Figure 5 is another three-dimensional structural schematic view of Figure 1

[0024] Figure 6 is a sectional structural schematic view of Figure 1

[0025] Figure 7 is another sectional structural schematic view of Figure 1

[0026] Figure 8 is an exploded structural schematic view of a second preferred embodiment of the key provided by the present application;

[0027] Figure 9 is a sectional structural schematic view of a third preferred embodiment of the key provided by the present application;

[0028] Figure 10 is a sectional structural schematic view of a fourth preferred embodiment of the key provided by the present application. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0030] ​​​​​​All the drawings only disclose the parts closely related to the utility model, and not the whole structure of the key or keyboard. Without affecting the purpose of the utility model, the utility model uses the words such as "provided with", "arranged", "connected", "mounted", "connected" and "fixed" to describe the relationship between two components, devices or structures in the claims and the specification, which covers the implementation mode of one-piece forming, unless otherwise specified in the utility model; when the utility model uses "one" before the feature, it only means that the feature appears for the first time, and not the meaning of the quantity word "one".

[0031] As Figures 1-7 shown is a preferred embodiment of the key applied to the magnetic conduction keyboard provided by the utility model. The embodiment provides a key for a keyboard circuit board 5, referring to Figure 1 , 4 , the key comprises a key switch 1 arranged on the circuit board 5 and a key cap 2 inserted on the key switch 1, and the key switch 1 is generally fixed (such as welding) or movably (such as insertion) mounted on the circuit board 5 in a detachable manner. The key switch 1 comprises a shell 11 (see also Figure 5 ) and a presser 12 movably relative to the shell 11, and the key cap 2 is inserted on the presser 12; the shell 11 and the presser 12 are of the prior art, and the shell 11 is composed of an upper cover 111 and a base 112 which are buckled to each other. The key cap 2 comprises a display screen 3, as shown in Figure 2 , an installation groove 21 is formed in the upper end surface of the key cap 2 to accommodate and fix the display screen 3, and the display screen 3 can be various products provided by the prior art, such as LED, LCD, OLED screen or ink screen, etc., and the display screen 3 comprises a fixedly connected conductive pin 31, and the shell 11 is further provided with an elastic conductive terminal 4 which can drive the key cap 2 to reset, the conductive pin 31 extends into the shell 11 through the presser 12 and is connected with the elastic conductive terminal 4, and the conductive pin 31 can extend into the shell 11 by opening a through hole or avoiding structure on the presser 12; the elastic conductive terminal 4 is electrically connected with the display screen 3 and the circuit board 5 respectively. The so-called "driving the key cap to reset" means that the elastic conductive terminal 4 can directly act on the conductive pin 31 through the elastic deformation rebound force, thereby driving the whole key cap 2 including the display screen 3 to reset.

[0032] After adopting such structure, the elastic conductive terminal 4 is electrically connected with the display screen 3 at one end and the circuit board 5 at the other end. Since the elastic conductive terminal 4 has the elastic reset function, the electrically connected structure between the elastic conductive terminal 4 and the display screen 3 and the circuit board 5 can realize a relatively fixed state, and will not cause relative displacement in the electrically connected structure due to the up and down movement of the key cap 2 and the press handle 12, thereby realizing relatively stable electric connection. Compared with the prior art, a series of defects caused by the relative movement of the electrically connected part are avoided, and the conductive pin 31 of the display screen 3 and the elastic conductive terminal 4 are both arranged in the shell 11 of the key switch 1, without occupying extra space, and have the feature of compact structure. More importantly, compared with the exposed mode, the elastic conductive terminal 4 is not easily affected by external water droplets, water vapor or dust, further ensuring the effectiveness and reliability of the electric connection. In addition, the elastic reset function of the elastic conductive terminal 4 can also be directly used to drive the conductive pin 31 to reset the display screen 3 and the key cap 2. Since the press handle 12 is connected to the bottom of the key cap 2, the reset function of the press handle 12 can be realized, and the elastic reset member in the key switch 1 is omitted, further simplifying the internal structure of the key switch 1 and reducing the difficulty of production and assembly.

[0033] As shown in Figure 3 , in the present embodiment, two elastic conductive terminals 4 having the same structure are included, corresponding to the positive and negative poles respectively; the display screen 3 extends downward to form two conductive pins 31 (see Figure 1 ), which are electrically connected with the corresponding elastic conductive terminals 4 respectively. Both of the elastic conductive terminals 4 are accommodated in the shell 11 of the key switch 1. Specifically, the mounting groove 21 at the upper end of the key cap 2 and the corresponding position of the press handle 12 are both provided with a hollow insertion hole 211, 121, and the lower cover of the shell 11 is provided with a mounting base 113 (see Figure 3 ). The two conductive pins 31 of the display screen 3 extend into the shell 11 through the insertion holes 211, 121 of the key cap 2 and the press handle 12 and are electrically connected with one end of the elastic conductive terminals 4, and the other end of the elastic conductive terminals 4 is arranged on the mounting base 113 of the lower cover and penetrates through the bottom surface of the lower cover to be electrically connected with the circuit board 5. The separate arrangement of the two elastic conductive terminals 4 facilitates the isolation of the positive and negative poles, avoiding the challenges of insulation design and production process brought by the integrated elastic conductive terminal 4.

[0034] The elastic conductive terminal 4 can be realized in various ways as long as it has the functions of elastic reset and electrical conduction. In the present embodiment, please refer to Figure 5The elastic conductive terminal 4 comprises a conductive spring 41 and a plug end 42 and a pin end 43 electrically connected to both ends of the conductive spring 41. The conductive pin 31 of the display screen 3 is inserted into the plug end 42, and the pin end 43 is electrically connected to the circuit board 5. The conductive spring 41 can realize the functions of conduction and reset at the same time, ensuring that the plug end 42 and the pin end 43 can be electrically connected to the display screen 3 and the circuit board 5 in a relatively stable manner, avoiding the relative displacement inside the electrical connection structure caused by the up-down movement of the keycap 2 and the press handle 12 affecting the conduction performance.

[0035] In order to improve the compatibility and replaceability of the key switch 1, in the embodiment, as shown in Figure 3 The bottom surface of the circuit board 5 is attached with a switch socket 6, which can be electrically connected to the circuit board 5 by welding or the like. The pin end 43 of the elastic conductive terminal 4 is inserted into the switch socket 6 after passing through the bottom surface of the base 112 and the circuit board 5. When the display screen 3, the keycap 2 or the key switch 1 is damaged, the user can conveniently pull out the entire key from the circuit board 5 and replace a new key, greatly reducing the after-sales cost caused by frequent factory maintenance, and effectively improving the user experience. In addition, different key switches 1, keycaps 2, and even key switches 1 with different conduction functions can be replaced according to needs, meeting the DIY needs of some users.

[0036] Referring again to Figure 1The plug-in end 42 comprises a first circular base 421 and an elastic abutting part 422 extending upwardly from the upper end face of the first circular base 421; the elastic abutting part 422 can be made by stamping forming, and in the embodiment, is formed by two pieces of rectangular conductive metal sheets 423 which are bent towards each other and abut against each other; the conductive pin 31 of the display screen 3 can be inserted into the elastic abutting part 422; since the elastic abutting part 422 is formed by two pieces of conductive metal sheets 423, double-sided electrical connection with the conductive pin 31 can be achieved; of course, more than three pieces of conductive metal sheets 423 can be used to form three-sided or multi-sided electrical connection to further improve the electrical connection; the upper end of the conductive spring 41 can be connected to the first circular base 421 by clamping, welding or other methods; in the embodiment, clamping is used. The integrated plug-in end 42 ensures the stability of the electrical connection, and the circular base is convenient for clamping or welding to the conductive spring 41; the elastic abutting part 422 can be stably connected with the conductive pin 31 of the display screen 3, and at least double-sided contact can further ensure the reliability of the electrical connection. The pin end 43 comprises a second circular base 431 and a pin 432 extending downwardly from the lower end face of the second circular base 431; the pin 432 can be inserted into the switch socket 6 to form at least double-sided electrical connection; the lower end of the conductive spring 41 can be connected to the second circular base 431 by clamping, welding or other methods; in the embodiment, clamping is used. The integrated pin end 43 ensures the stability of the electrical connection, and the circular base is convenient for clamping or welding to the conductive spring 41; the switch socket 6 can be stably connected with the pin 432 of the elastic conductive terminal 4; at least double-sided contact can further ensure the reliability of the electrical connection. It should be pointed out that, due to the presence of the conductive spring 41, the conductive pin 31 of the display screen 3 and the plug-in end 42, and the pin 432 of the elastic conductive terminal 4 and the switch socket 6 can be in a relatively fixed state, and will not be relatively displaced due to the up-down movement of the key cap 2 and the press handle 12.

[0037] As mentioned above, by properly setting the elastic conductive terminal 4, the elastic reset member in the key switch 1 can be replaced, so that the product structure is simpler. However, in the embodiment, please refer to Figure 1 , 6, 7, the key switch 1, the shell 11 is further provided with a elastic reset member 13 for driving the handle 12 to reset, in particular, the bottom of the base 112 is provided with a cylindrical locating seat 114, the elastic reset member 13 is a spring, which is sleeved on the cylindrical locating seat 114; the handle 12 extends downward to form a guide column 122, which is arranged in the elastic reset member 13 and can move up and down in the cylindrical locating seat 114, thereby playing a role of guiding and positioning. The specially designed elastic reset member 13 increases the internal structure of the key switch 1, but since the elastic reset member 13 does not need to bear the function of conducting electricity, it has more design space and can more effectively realize the reset function of the handle 12 and the key cap 2. At the same time, since the elastic conductive terminal 4 no longer bears the reset function, the installation position and the design of the spring are no longer restricted by the function, thereby more effectively improving the conductivity and connection performance.

[0038] Again referring to Figure 8 、 7 , the key switch 1 further comprises a magnet 14 and a Hall element (not shown in the figure) electrically connected with the circuit board 5, which can move up and down with the guide column 122. The Hall element adopts the prior art and can be arranged inside or outside the shell 11, for example, attached to the front or back of the circuit board 5; when the magnet 14 moves up and down following the guide column 122, the Hall element can detect the change of magnetic lines and convert it into an electrical signal to realize the control function. That is, the key switch 1 of the embodiment is a magnetic conduction switch, which does not need to use the conductive pin 31, and the circuit board 5 used by the contact type mechanical keyboard, that is, the keyboard using the contact type conduction of the conductive sheet, reserves the installation position for electrically connecting with the conductive pin 31. Therefore, by adjusting the position of the two elastic conductive terminals 4, the position of the two elastic conductive terminals 4 can be the same as that of the pin 432 of the contact type key switch 1, so that they can be compatible with each other, not only effectively reducing the manufacturing cost of mold opening and process changing, but also realizing free replacement of the switch to further improve the DIY performance.

[0039] As Figure 9The second preferable embodiment of the key applied to the light guide on keyboard is shown in the utility model. The difference from the first embodiment is that the key switch 1 further comprises a light emitting pair of tubes electrically connected with the circuit board 5, and the light emitting pair of tubes further comprises an emitting tube 161 and a receiving tube 162, which can be arranged inside or outside the key switch 1, and in the embodiment, the light emitting pair of tubes are arranged outside and directly attached to the upper surface of the circuit board 5; when the knob 12 moves up and down, the guide column 122 or the light shielding piece (not shown in the figure) arranged on the knob 12 can guide or block the light path formed by the light emitting pair of tubes, and in the embodiment, the guide column 122 is directly used to realize the light shielding function, and in other embodiments, the light shielding piece can be additionally arranged on the knob 12, and the light shielding piece can be located at any position on the knob 12, including being arranged on the guide column 122. Since the key switch 1 in the embodiment is a light guide on switch, the light guide on switch is similar to the magnetic guide on switch and does not need to use the conductive pin 31, and can also be compatible with the circuit board 5 used by the contact type mechanical keyboard, so that better compatibility is achieved, and the manufacturing cost of mold opening, process changing and the like is reduced.

[0040] As shown in the first embodiment of the utility model, Figure 10 The third preferable embodiment of the key applied to the inductance on keyboard is shown in the utility model. The difference from the first embodiment is that a metal rod 17 is arranged in the guide column 122 in the embodiment, and a coil (not shown in the figure) for generating an electromagnetic field is further arranged on the circuit board 5, and the control function is realized by cutting the electromagnetic field to generate an induced current through the metal rod moving up and down along with the knob 12.

[0041] As shown in the fourth preferable embodiment of the key applied to the conductive sheet contact type keyboard (i.e. the typical mechanical keyboard) of the utility model, ​ The difference from the first embodiment is that the key switch 1 shell 11 further comprises a dynamic conductive sheet 18 and a static conductive sheet 19 in the embodiment, and when the knob 12 moves up and down, the dynamic conductive sheet 18 is pushed by the knob 12 to contact or disconnect with the static conductive sheet 19, so as to realize the on-off. In the embodiment, the dynamic conductive sheet and the static conductive sheet also need to be electrically connected with the circuit board 5, so that the whole key has four conductive pins 31 which need to be connected to the circuit board 5, and correspondingly, the switch socket 6 attached to the back of the circuit board 5 is also two.

[0042] It should be noted that the four embodiments provided in the utility model are only used for illustrating the key switch 1 which is popular in the market at present, and with the further development of technology, new key switch 1 with new on-off modes can appear, and as long as the technical concept of the utility model is not violated, it should be understood as being within the protection scope of the utility model.

[0043] The utility model also provides a kind of preferred embodiment (not shown in drawing) of keyboard. The keyboard includes a circuit board 5 and at least one key of the aforementioned technical solution, and the key is electrically connected to the circuit board 5. It should be known that the aforementioned keyboard can be all keys using the key 1 disclosed by the utility model, or only part of the keys can be used.

[0044] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement and improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A key for a circuit board, comprising a key switch disposed on the circuit board and a key cap disposed on the key switch, the key switch comprising a housing and a stem movable up and down relative to the housing, the key cap being disposed on the stem, characterized in that: The key cap comprises a display screen, the display screen comprises a conductive pin, the shell is further provided with an elastic conductive terminal capable of driving the key cap to reset, the conductive pin extends into the shell through the press handle and is connected with the elastic conductive terminal, and the elastic conductive terminal is electrically connected with the display screen and the circuit board respectively.

2. The key of claim 1, wherein: The shell comprises two elastic conductive terminals, the display screen comprises two conductive pins, one end of the elastic conductive terminal is electrically connected with the conductive pin, and the other end is electrically connected with the circuit board.

3. The key of claim 2, wherein: The elastic conductive terminal comprises a conductive spring and plug-in ends and pin ends electrically connected with both ends of the conductive spring, the conductive pin of the display screen is inserted into the plug-in end, and the pin end is electrically connected with the circuit board.

4. The key of claim 3, wherein: The bottom surface of the circuit board is attached with a switch socket, the switch socket is electrically connected with the circuit board, and the pin end of the elastic conductive terminal is inserted into the switch socket.

5. The key of claim 4, wherein: The plug-in end comprises a first circular base and an elastic abutting part formed by extending upward from the upper end surface of the first circular base, the conductive pin of the display screen can be inserted into the elastic abutting part to form at least double-sided electrical connection, and the upper end of the conductive spring is connected with the first circular base.

6. The key of claim 5, wherein: The pin end comprises a second circular base and a pin formed by extending downward from the lower end surface of the second circular base, the pin can be inserted into the switch socket to form at least double-sided electrical connection, and the lower end of the conductive spring is connected with the second circular base.

7. The key according to any one of claims 1-6, characterized in that: The shell of the key switch is further provided with an elastic reset member capable of driving the press handle to reset, and the bottom of the press handle extends downward to form a guide column, the guide column is inserted into the elastic reset member.

8. The key of claim 7, wherein: The key switch further comprises a magnet capable of moving up and down along the guide column and a Hall element electrically connected with the circuit board.

9. The key of claim 7, wherein: The key switch further comprises a light-emitting pair of tubes electrically connected with the circuit board, when the press handle moves up and down, the guide column or a light-shielding member arranged on the press handle can guide the light path formed by the light-emitting pair of tubes to be open or blocked.

10. A keyboard comprising a circuit board, characterized by: The keyboard further comprises at least one key as claimed in any one of claims 1-9, and the key is electrically connected with the circuit board.

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