Key group with exchangeable functions

Abstract

The exchangeable function key group comprises a base, a circuit board and a plurality of key modules. The base comprises a plurality of containing holes. The circuit board is located in the base. The multiple key modules are detachably located in the multiple containing holes respectively. Each key module comprises a key lower cover, a driving structure, an elastic body and a reflecting plate. The key lower cover comprises a key lower cover positioning piece which is detachably located in one containing hole and located above the circuit board. The driving structure comprises a driving structure positioning piece. And the driving structure positioning piece is combined with the key lower cover positioning piece. The elastic body surrounds the driving structure positioning piece and the key lower cover positioning piece and provides elastic force for the driving structure so that the driving structure can move in the direction away from the circuit board.

Description

Technical Field

[0001] The present invention relates to an interchangeable function key group, in particular to an interchangeable function key group having a key module that can be detached and installed at different positions, and the key module has a bound input signal. Background Art

[0002] Generally, a desktop computer is connected to a keyboard for a user to input signals on the keyboard to operate the computer. Currently, the signals input by the keys on the keyboard are all single input signals, or composite signals controlled by software. Users cannot arbitrarily change the signals input by each key according to their personal usage habits, or exchange the keys on the keyboard to change the position of the input signals.

[0003] Therefore, manufacturers have provided software that can change the key input signals. However, this has led to the need to control and maintain many new software versions, and it is not easy for general end-users to update the software versions themselves. In addition, manufacturers have also provided keyboards with replaceable keys. These keyboards can conduct electronic signals by using a metal clamping method, and when the keys on the keyboard are exchanged, the position of the input signals is changed. However, for keyboards using the metal clamping method, problems such as poor conduction due to oxidation of the metal clamping surface or metal deformation are likely to occur.

[0004] Therefore, how to provide a keyboard that can change the input signals of the keyboard at the same position through a hardware structure has become a problem worthy of discussion. Summary of the Invention

[0005] The main object of the present invention is to provide an interchangeable function key group having a key module that can be detached and installed at different positions, and the key module has a bound input signal.

[0006] To achieve the above object, an interchangeable function key group of the present invention includes a base, a circuit board, and a plurality of key modules. The base includes a plurality of receiving holes. The circuit board is located inside the base. The plurality of key modules are detachably located in the plurality of receiving holes respectively. Each key module includes a key lower cover, a driving structure, an elastic body, and a reflecting plate. The key lower cover includes a key lower cover positioning member and is detachably located in one of the receiving holes and above the circuit board. The driving structure includes a driving structure positioning member. The driving structure positioning member and the key lower cover positioning member are combined. The elastic body surrounds the driving structure positioning member and the key lower cover positioning member and provides an elastic force to the driving structure to move the driving structure away from the circuit board. The reflecting plate is connected to the bottom surface of the driving structure and includes a reflecting totem. When the driving structure receives an external pressure and moves the driving structure towards the circuit board, the driving structure will drive the reflecting totem of the reflecting plate towards the circuit board, so that the circuit board receives a specific electronic signal group generated by the approaching reflecting totem.

[0007] According to an embodiment of the present invention, the reflector further includes a reflector body, and the reflection totem further includes a plurality of induction regions.

[0008] According to an embodiment of the present invention, the plurality of induction regions are respectively located at a plurality of corners of the reflector body.

[0009] According to an embodiment of the present invention, metal sheets are respectively and selectively provided in the plurality of induction regions, so that a specific set of electronic signals is generated when the reflection totem approaches the circuit board.

[0010] According to an embodiment of the present invention, the circuit board further includes a plurality of signal induction modules, and each signal induction module includes an Rx circuit and a plurality of Tx circuits; the positions of the plurality of Tx circuits correspond to the plurality of induction regions.

[0011] According to an embodiment of the present invention, when the driving structure receives an external pressure and moves the driving structure towards the circuit board, the driving structure will drive the reflection totem of the reflector towards the circuit board, so that the plurality of Tx circuits of the signal induction module corresponding to the reflector respectively emit electronic signals to the corresponding induction regions on the reflection totem, and the induction regions provided with metal sheets will reflect the electronic signals to the Rx circuit, so that the circuit board receives the specific set of electronic signals generated by the approaching reflection totem.

[0012] According to an embodiment of the present invention, each key module further includes a key upper cover, and the key upper cover is combined with the key lower cover.

[0013] According to an embodiment of the present invention, the key upper cover further includes a key upper cover perforation; the driving structure further includes a driving structure fastener, and the driving structure fastener passes through the key upper cover perforation.

[0014] According to an embodiment of the present invention, the reflector body further includes a reflector perforation, and the key lower cover positioning member passes through the reflector perforation.

[0015] According to an embodiment of the present invention, the key upper cover further includes at least one key upper cover fastener, and the key lower cover further includes at least one key lower cover first fastener; the key upper cover fastener fastens the key lower cover first fastener.

[0016] According to an embodiment of the present invention, the key module further includes a keycap, and the keycap further includes a keycap fastener, and the keycap fastener fastens the driving structure fastener.

[0017] According to an embodiment of the present invention, the circuit board further includes a signal adjustment module, and the signal adjustment module is signal-connected to the plurality of signal induction modules.

[0018] According to an embodiment of the present invention, the circuit board further includes a signal processing module, and the signal processing module is signal-connected to the plurality of signal induction modules.

[0019] According to an embodiment of the present invention, the interchangeable function button group further includes a plurality of positioning frames, the plurality of positioning frames are respectively disposed below the plurality of receiving holes, and the plurality of positioning frames respectively surround the plurality of button modules.

[0020] According to an embodiment of the present invention, each positioning frame further includes a positioning frame anti-fooling member, and the button lower cover further includes a button lower cover anti-fooling member; the positioning frame anti-fooling member and the button lower cover anti-fooling member are combined.

[0021] According to an embodiment of the present invention, each positioning frame further includes at least one positioning frame positioning member, and the circuit board further includes a plurality of circuit board positioning holes, and the positioning frame positioning members of each positioning frame are respectively combined with the plurality of circuit board positioning holes.

[0022] According to an embodiment of the present invention, each positioning frame further includes at least one positioning frame fastening member, and the circuit board further includes a plurality of circuit board fastening grooves, and the positioning frame fastening members of each positioning frame are respectively fastened to the plurality of circuit board fastening grooves.

[0023] According to an embodiment of the present invention, the button lower cover further includes at least one second button lower cover fastening member, and the second button lower cover fastening member fastens the positioning frame.

[0024] According to an embodiment of the present invention, the button lower cover has a bottom plate thickness, and the range of the bottom plate thickness is less than 2 millimeters. Description of the Drawings

[0025] Figure 1 is a schematic diagram of an interchangeable function button group according to an embodiment of the present invention.

[0026] Figure 2 is a sectional view of an interchangeable function button group according to an embodiment of the present invention.

[0027] Figure 3 is an exploded perspective view of an interchangeable function button group according to an embodiment of the present invention.

[0028] Figure 4 is a schematic diagram of a circuit board and a positioning frame according to an embodiment of the present invention.

[0029] Figure 5 is an exploded perspective view of a button module and a positioning frame according to an embodiment of the present invention.

[0030] Figure 6A is a sectional view of a button module according to an embodiment of the present invention.

[0031] Figure 6B is a sectional view of a button module with the keycap pressed down according to an embodiment of the present invention.

[0032] Figure 7Exploded perspective view of the upper key cover, lower key cover and positioning frame of an embodiment of the present invention.

[0033] Figure 8 Bottom view schematic diagram of the reflector of an embodiment of the present invention.

[0034] Figure 9A System architecture diagram of the interchangeable function key group when the key module of an embodiment of the present invention has not moved downward.

[0035] Figure 9B System architecture diagram of the interchangeable function key group when one of the key modules of an embodiment of the present invention moves downward.

[0036] Figure 10 Schematic diagram of the reflector moving to cover the Rx circuit and Tx circuit in an embodiment of the present invention.

[0037] Figure 11 Schematic diagram of the signal strength detected by the Rx circuit when the reflector moves to cover the Rx circuit and Tx circuit in an embodiment of the present invention.

[0038] Figure 12 Schematic diagram of the interchangeable function key group for changing the position of the key module in an embodiment of the present invention.

[0039] Explanation of reference numerals is as follows:

[0040] 1 Key module

[0041] 10 Upper key cover

[0042] 11 Upper key cover perforation

[0043] 12 Upper key cover fastener

[0044] 20 Lower key cover

[0045] 21 Lower key cover positioning part

[0046] 22 First lower key cover fastener

[0047] 23 Lower key cover anti-fooling part

[0048] 24 Second lower key cover fastener

[0049] 25 Key accommodation space

[0050] 30 Driving structure

[0051] 31 Driving structure main body

[0052] 32 Driving structure fastener

[0053] 33 Driving structure positioning part

[0054] 40 Elastomer

[0055] 50 Reflector

[0056] 51 Reflector main body

[0057] 511 Reflector perforation

[0058] 52 Reflection totem

[0059] 521, 521a, 521b, 521c Sensing area

[0060] 525 Metal sheet

[0061] 60 Keycap

[0062] 61 Keycap fastener

[0063] 100 Exchangeable function button group

[0064] 110 Base

[0065] 111 Upper cover

[0066] 112 Lower cover

[0067] 113 Accommodating hole

[0068] 114 Base accommodating space

[0069] 120 Circuit board

[0070] 121 Signal sensing module

[0071] 121a Rx circuit

[0072] 121b Tx circuit

[0073] 123 Signal adjustment module

[0074] 124 Signal processing module

[0075] 125 Circuit board positioning hole

[0076] 126 Circuit board fastening groove

[0077] 130 Positioning frame

[0078] 131 Positioning frame anti-fooling part

[0079] 132 Positioning frame positioning part

[0080] 133 Positioning frame fastener

[0081] X Bottom plate thickness Detailed implementation method

[0082] To better understand the technical content of the present invention, specific preferred embodiments are described below.

[0083] Please refer to the following Figures 1 to 12 Regarding the interchangeable function key group of an embodiment of the present invention. Figure 1 It is a schematic diagram of the interchangeable function key group of an embodiment of the present invention. Figure 2 It is a cross-sectional view of the interchangeable function key group of an embodiment of the present invention. Figure 3 It is an exploded perspective view of the interchangeable function key group of an embodiment of the present invention. Figure 4 It is a schematic diagram of a circuit board and a positioning frame of an embodiment of the present invention. Figure 5 It is an exploded perspective view of a key module and a positioning frame of an embodiment of the present invention. Figure 6A It is a cross-sectional view of a key module of an embodiment of the present invention. Figure 6B It is a cross-sectional view of a key module with the keycap pressed down in an embodiment of the present invention. Figure 7 It is an exploded perspective view of a key upper cover, a key lower cover, and a positioning frame of an embodiment of the present invention. Figure 8 It is a bottom view schematic diagram of a reflector in an embodiment of the present invention. Figure 9A It is a system architecture diagram of the interchangeable function key group when the key module has not moved downward in an embodiment of the present invention. Figure 9B It is a system architecture diagram of the interchangeable function key group when one of the key modules moves downward in an embodiment of the present invention. Figure 10 It is a schematic diagram of the reflector moving to cover the Rx circuit and the Tx circuit in an embodiment of the present invention. Figure 11 It is a schematic diagram of the signal strength detected by the Rx circuit when the reflector moves to cover the Rx circuit and the Tx circuit in an embodiment of the present invention. Figure 12 It is a schematic diagram of the interchangeable function key group with the position of the key module changed in an embodiment of the present invention.

[0084] As Figures 1 to 3 As shown, in the interchangeable function key group 100 of an embodiment of the present invention, there is a key module 1 that can be detached and installed at different positions, and the key module 1 has a bound input signal, so that the key module 1 provides the bound input signal at different positions. The interchangeable function key group 100 can be installed on an electronic device (such as a computer) that needs to input an electronic signal. The interchangeable function key group 100 includes a base 110, a circuit board 120, a plurality of positioning frames 130, and a plurality of key modules 1.

[0085] The base 110 includes an upper cover 111, a lower cover 112, and a plurality of receiving holes 113. The upper cover 111 is the upper cover body of the base 110, the lower cover 112 is the lower cover body of the base 110, and the upper cover 111 and the lower cover 112 are combined to form a base receiving space 114 inside. The plurality of receiving holes 113 are provided in the upper cover 111 and are used to receive a plurality of button modules 1.

[0086] Such as Figure 3 , Figure 4 , Figure 9A and Figure 9BAs shown, the circuit board 120 is located within the base accommodation space 114 of the base 110. The circuit board 120 includes a plurality of signal sensing modules 121, a signal adjustment module 123, a signal processing module 124, a plurality of circuit board positioning holes 125, and a plurality of circuit board clamping grooves 126. The signal sensing module 121 is used to sense a specific electronic signal group generated when the key module 1 approaches. In this embodiment, each signal sensing module 121 includes an Rx circuit 121a and four Tx circuits 121b. The Rx circuit 121a is located at the center of the signal sensing module 121. Two of the four Tx circuits 121b are respectively located at the upper left and upper right of the Rx circuit 121a, and the other two are respectively located at the lower left and lower right of the Rx circuit 121a. The Tx circuit 121b is used to send an electronic signal (such as actively and continuously sending a 100K pulse signal) within a specific distance range (such as 1.3 millimeters), and the Rx circuit 121a is used to receive the signal sent by the Tx circuit 121b; the Rx circuit 121a has a predicted gate voltage Vth. If the received signal exceeds the gate voltage Vth, the circuit board 120 will confirm that the key module 1 is pressed. The signal adjustment module 123 is a chip with electronic signal filtering and amplification functions. It is signal-connected to a plurality of signal sensing modules 121 and is used to filter and amplify the specific electronic signal group sensed by the signal sensing modules 121. The signal processing module 124 is a central processing unit chip. It is signal-connected to a plurality of signal sensing modules 121. The signal processing module 124 is used to process the specific electronic signal group processed by the signal adjustment module 123 into an input signal corresponding to the approaching key module 1. However, it should be noted that for the purpose of clearly showing the Tx circuit and the Rx circuit, the Tx circuit and the Rx circuit in this case are designed to be exposed on the surface of the circuit board 120, but the Tx circuit and the Rx circuit can also be designed to be located inside the circuit board 120. The number and position of the Tx circuit and the Rx circuit are not limited to the above, and can be changed according to design requirements; in addition, the Tx circuit and the Rx circuit have been widely used in the known circuit field, and their principles are not the focus of this case, so they will not be elaborated. In addition, for the purpose of clearly and concisely showing the system architecture, only three signal sensing modules 121 and three key modules 1 are drawn in Figure 9, and the other six signal sensing modules 121 and the other six key modules 1 are omitted to express the signal connection relationship between each signal sensing module 121 and the corresponding key module 1; however, those skilled in the art should be able to understand according to Figure 3 and understand that the interchangeable function key group 100 of the present invention actually has a plurality of key modules 1, and the circuit board 120 has a corresponding plurality of signal sensing modules 121.

[0087] The plurality of circuit board positioning holes 125 are all through holes and are arranged around each signal sensing module 121; Figure 4For example, there are three circuit board positioning holes 125 around each signal sensing module 121. One circuit board positioning hole 125 is provided at the upper right corner of the signal sensing module 121, and the other two circuit board positioning holes 125 are provided at the lower left corner and the lower right corner of the signal sensing module 121. The plurality of circuit board clamping grooves 126 are all strip-shaped holes and are provided around each signal sensing module 121; Figure 4 For example, one circuit board clamping groove 126 is provided on each of the left and right sides of each signal sensing module 121. However, the number and positions of the circuit board positioning holes 125 and the circuit board clamping grooves 126 are not limited to the above, and can be changed according to design requirements.

[0088] As Figure 3 and Figure 4 shown, the plurality of positioning frames 130 are generally presented as square frames, which are respectively provided below the plurality of receiving holes 113 and received in the base receiving space 114, and the plurality of positioning frames 130 respectively surround the plurality of button modules 1 to position the plurality of button modules 1 respectively. Each positioning frame 130 further includes a positioning frame anti-fooling member 131, three positioning frame positioning members 132, and two positioning frame clamping members 133. The positioning frame anti-fooling member 131 is a notch located inside the frame body of the positioning frame 130. The positioning frame positioning members 132 are convex posts, and the three positioning frame positioning members 132 are respectively provided at three of the corners of the bottom surface of the square frame body of the positioning frame 130. The three positioning frame positioning members 132 of each positioning frame 130 are respectively combined with the three circuit board positioning holes 125 around the signal sensing module 121. The positioning frame clamping members 133 are rectangular clamping plates, and the two positioning frame clamping members 133 are respectively provided on opposite sides of the square frame body of the positioning frame 130. The two positioning frame clamping members 133 of each positioning frame 130 respectively clamp the two circuit board clamping grooves 126 around the signal sensing module 121. Through the positioning frame positioning members 132 and the positioning frame clamping members 133, the positioning frame 130 can be combined with the circuit board 120 in a specific directionality to ensure that the reflector 50 can overlap the circuit board 120 in an appropriate direction. However, the number and clamping methods of the positioning frame positioning members 132 and the positioning frame clamping members 133 are not limited to the above, and can be changed according to design requirements, and the positions of the positioning frame positioning members 132 and the positioning frame clamping members 133 can also be changed according to the positions of the circuit board positioning holes 125 and the circuit board clamping grooves 126.

[0089] As Figure 3 and Figure 5As shown, multiple key modules 1 are detachably located in multiple receiving holes 113 respectively. Each key module 1 includes an upper key cover 10, a lower key cover 20, a driving structure 30, an elastomer 40, a reflector 50 and a keycap 60. The upper key cover 10 includes an upper key cover through hole 11 and four upper key cover fasteners 12. The upper key cover through hole 11 is located at the top of the upper key cover 10. The four upper key cover fasteners 12 are respectively arranged at four corners. The four upper key cover fasteners 12 are all buckles for fastening the lower key cover 20. However, the number and fastening method of the upper key cover fasteners 12 can be changed according to design requirements.

[0090] As Figure 3 , Figures 5 to 7 shown, the lower key cover 20 and the upper key cover 10 are combined and detachably located in one of the receiving holes 113 and above the circuit board 120. The lower key cover 20 is made of a non-conductive material, such as plastic. The lower key cover 20 includes a lower key cover positioning member 21, four first lower key cover fasteners 22, a lower key cover anti-fooling member 23 and two second lower key cover fasteners 24. The lower key cover positioning member 21 is a tube. The four first lower key cover fasteners 22 are all fastening grooves. The positions of the four first lower key cover fasteners 22 respectively correspond to the four upper key cover fasteners 12. The buckles of the four upper key cover fasteners 12 respectively fasten the fastening grooves of the four first lower key cover fasteners 22 to combine the lower key cover 20 and the upper key cover 10. The lower key cover anti-fooling member 23 is a convex block. The notch of the positioning frame anti-fooling member 131 and the convex block of the lower key cover anti-fooling member 23 are combined to ensure that the lower key cover 20 and the positioning frame 130 are combined in an appropriate arrangement direction. The second lower key cover fastener 24 is a convex point. The convex point of the second lower key cover fastener 24 fastens the inner edge of the square of the positioning frame 130. However, the number and fastening method of the first lower key cover fasteners 22, and the number and fastening method of the second lower key cover fasteners 24 can be changed according to design requirements.

[0091] The driving structure 30 is made of a wear-resistant material (such as metal or plastic steel material). It includes a driving structure main body 31, a driving structure fastener 32 and a driving structure positioning member 33. The driving structure main body 31 is located between the upper key cover 10 and the lower key cover 20. The driving structure fastener 32 is a fastening column. It connects the driving structure main body 31 and passes through the upper key cover through hole 11 and fastens the keycap 60. The driving structure positioning member 33 is a column. It connects the driving structure main body 31 and extends into the tube of the lower key cover positioning member 21 to combine with the lower key cover positioning member 21.

[0092] The elastomer 40 is a spring that surrounds the driving structure positioning member 33 and the lower keycap positioning member 21. One end of the elastomer 40 contacts the bottom of the lower keycap 20, and the other end of the elastomer 40 contacts the driving structure 30. Thereby, the elastomer 40 provides a restoring elastic force to the driving structure locking member 32 in the driving structure 30, so that after the pressing force applied to the keycap 60 disappears, the driving structure locking member 32 is urged to move towards the upper keycap 10.

[0093] As Figure 6A and Figure 6B shown, the lower keycap 20 has a bottom plate thickness X, and the range of the bottom plate thickness X is less than 2 mm; in a preferred embodiment, the bottom plate thickness X is 0.8 mm. According to actual experiments, the range limitation of the bottom plate thickness X can ensure that when the reflector 50 moves to the bottom of the lower keycap 20, the circuit board 120 below the lower keycap 20 can receive a specific electronic signal group of the reflector 50. However, the range of the bottom plate thickness X is not limited to 2 mm and can be changed according to design requirements.

[0094] As Figure 5 、 Figure 6A 、 Figure 6B 、 Figures 8 to 10 shown, the reflector 50 is disposed on the bottom surface of the driving structure 30. The reflector 50 includes a reflector main body 51 and at least one reflection totem 52. The reflector main body 51 is generally presented as a rectangular plate and is made of a non-conductive material. The reflector main body 51 includes a reflector through hole 511, and the lower keycap positioning member 21 and the elastomer 40 pass through the reflector through hole 511. The reflection totem 52 includes four sensing areas 521, 521a, 521b, 521c. The four sensing areas 521, 521a, 521b, 521c are respectively located at the four corners of the reflector main body 51. The positions of the four sensing areas 521, 521a, 521b, 521c correspond to the positions of the four Tx circuits 121b. Metal sheets 525 are selectively disposed on the four sensing areas 521, 521a, 521b, 521c respectively, so that the reflection totem 52 generates a specific electronic signal group when approaching the circuit board 120; in the present invention, the electronic signal generated by the sensing area 521 is defined as "A", the electronic signal generated by the sensing area 521a is defined as "B", the electronic signal generated by the sensing area 521b is defined as "C", and the electronic signal generated by the sensing area 521c is defined as "D". It should be noted that Figure 8 is drawn from the bottom surface of the reflector 50 viewed from the bottom-up angle, Figure 10 is drawn from the top-down angle viewing the reflection totem 52 covering the four Tx circuits 121b and the Rx circuit 121a, so Figure 8 and Figure 10 the reflection totem 52 in will be reversed left and right due to the relative viewing angles.

[0095] AsFigure 8 As shown, in the reflection totem 52 of this embodiment, metal sheets 525 (shown as dot areas) are provided in the upper left and lower right induction areas 521 and 521c, while no metal sheets 525 are provided in the upper right and lower left induction areas 521a and 521b. Therefore, as Figure 6A , Figure 6B , Figures 9A to 10 shown, when the reflection totem 52 of the reflector 50 moves towards the circuit board 120 until the reflector 50 touches the bottom of the key lower cover 20, the reflection totem 52 will move to the signal emission range of the circuit on the signal induction module 121. The electronic signals emitted by the four Tx circuits 121b of the signal induction module 121 corresponding to the reflector 50 will be respectively sent to the four induction areas 521, 521a, 521b, and 521c at the corresponding positions; that is to say, the electronic signal of the Tx circuit 121b in the upper right corner in Figure 10 will be sent to the induction area 521, the electronic signal of the Tx circuit 121b in the upper left corner will be sent to the induction area 521a, the electronic signal of the Tx circuit 121b in the lower right corner will be sent to the induction area 521b, and the electronic signal of the Tx circuit 121b in the upper left corner will be sent to the induction area 521c, which is equivalent to the circuit conduction between the signal induction module 121 and the corresponding key module 1. Since only the induction areas 521 and 521c are provided with metal sheets 525, only the induction areas 521 and 521c can reflect the electronic signals sent by the corresponding Tx circuits 121b to the Rx circuit 121a, while the induction areas 521a and 521b cannot reflect the electronic signals sent by the corresponding Tx circuits 121b.

[0096] Therefore, as Figure 10 and Figure 11 shown, the Rx circuit 121a will receive the electronic signal defined as A generated by the reflection of the induction area 521, and the electronic signal defined as D generated by the reflection of the induction area 521c. Therefore, the electronic signals of A and D received by the Rx circuit 121a will exceed the expected gate voltage Vth; at the same time, the Rx circuit 121a will not receive the electronic signals reflected by the induction areas 521a and 521b, so the electronic signals of B and C received by the Rx circuit 121a will not exceed the gate voltage Vth; that is to say, the Rx circuit 121a will receive the specific electronic signal group of "AD" generated by the reflection totem 52. Therefore, by selectively providing metal sheets 525 in the four induction areas 521, 521a, 521b, and 521c, the following 16 specific electronic signal groups can be generated: "A, AB, AC, AD, ABC, ABD, ACD, ABCD, B, BC, BD, BCD, C, CD, D, none".

[0097] As Figure 3 and Figure 6AAs shown, the keycap 60 includes a keycap fastening member 61. The keycap fastening member 61 is a fastening groove for fastening the driving structure fastening member 32. The top of the keycap 60 can be marked with key symbols (such as alphanumeric symbols, punctuation marks, or phonetic notations) according to usage requirements, so that the user can understand the signals generated when operating the keycap 60.

[0098] As Figure 1 and Figure 3 shown, when the user needs to input a signal to the computer host connected to the interchangeable function key group 100, the user can press the keycap 60 of the key module 1 marked with the corresponding key symbol of the interchangeable function key group 100 of the present invention according to the signal to be input. For example, in an embodiment of the present invention, Figure 8 on the keycap 60 of the key module 1 corresponding to the reflector 50 shown, the number 7 is marked; when the user presses the key module 1 with the number 7 marked on the keycap 60, as Figure 3 、 Figures 5 to 6B and Figure 8 shown, the keycap 60 will receive the external pressure applied by the user; since the keycap fastening member 61 fastens the driving structure fastening member 32, the keycap 60 will transmit the external pressure to the driving structure 30, so that the driving structure fastening member 32 and the driving structure positioning member 33 of the driving structure 30 move together with the keycap 60 towards the circuit board 120.

[0099] When the driving structure fastening member 32 receives the external pressure and causes the driving structure 30 to move towards the circuit board 120, the driving structure 30 will drive the reflection totem 52 of the reflector 50 to move towards the circuit board 120, so that the four Tx circuits 121b of the signal sensing module 121 corresponding to the reflector 50 respectively emit electronic signals to the corresponding sensing areas 521, 521a, 521b, 521c on the reflection totem 52, and only the sensing areas 521, 521c provided with the metal sheet 525 will reflect the electronic signals to the Rx circuit 121a, and the sensing areas 521a, 521b without the metal sheet cannot reflect the electronic signals sent by the corresponding Tx circuits 121b. Therefore, as Figure 10 and Figure 11 shown, the Rx circuit 121a will receive the electronic signals defined as A generated by the reflection of the sensing area 521, and the electronic signals defined as D generated by the reflection of the sensing area 521c, so the electronic signals of A and D received by the Rx circuit 121a will exceed the gate voltage Vth; at the same time, the Rx circuit 121a will not receive the electronic signals reflected by the sensing areas 521a, 521b, so the electronic signals of B and C received by the Rx circuit 121a will not exceed the gate voltage Vth; that is to say, the Rx circuit 121a will receive the specific electronic signal group of "AD" generated by the reflection totem 52, and the circuit board 120 will confirm that the key module 1 corresponding to the specific electronic signal group of "AD" is pressed.

[0100] The signal sensing module 121 transmits the received specific electronic signal group of "AD" to the signal adjustment module 123, so that the signal adjustment module 123 filters and amplifies the specific electronic signal group sensed by the signal sensing module 121. Then, the signal adjustment module 123 transmits the filtered and amplified specific electronic signal group to the signal processing module 124, and the signal processing module 124 processes it into the number 7 corresponding to the input signal of the pressed key module 1 and inputs it to the computer mainframe.

[0101] In addition, as Figure 1 , Figure 3 and Figure 7 shown, if the user wants to swap the positions of any two key modules 1 (for example, the two key modules 1 marked with the numbers 1 and 7), the user only needs to apply force to pull the two key modules 1 upwards, so that the bumps of the second fastener 24 of the key lower cover are separated from the positioning frame 130, and the key module 1 can be detached from the positioning frame 130 and the receiving hole 113; then, the user can swap the positions of the two key modules 1, place the key module 1 above the positioning frame 130, and align the protrusions of the driving structure positioning member 33 with the notches of the positioning frame anti-fooling member 131, and then apply force to press the two key modules 1 downwards, so that the key lower cover 20 of each key module 1 and the positioning frame 130 are combined in an appropriate arrangement direction, and the bumps of the second fastener 24 of the key lower cover are clamped to the inner edge of the square frame of the positioning frame 130. In this way, as Figure 5 and Figure 12 shown, the two key modules 1 marked with the numbers 1 and 7 can be swapped positions, and the two key modules 1 are respectively combined with the positioning frame 130 and completed positioning.

[0102] Through the structural design of the interchangeable function key group 100 of the present invention, the user can disassemble the key module 1 and install it at different positions. The key module 1 can generate bound input signals through different reflection totems and input them to the circuit board. Therefore, the key module 1 can still provide bound input signals at different positions. In addition, the interchangeable function key group 100 of the present invention does not use a metal clamping structure, so problems such as poor conduction caused by oxidation of the clamping surface or metal deformation can be avoided.

[0103] It should be noted that the above are only examples, not limited to the examples. For example, those that do not depart from the basic structure of the present invention should be within the scope of the rights claimed in this patent, and should be subject to the scope of the claims.

Claims

1. A group of interchangeable function keys, characterized in that: include: A base, comprising a plurality of receiving holes; A circuit board is located in the base; A plurality of key modules are detachably disposed in the plurality of receiving holes, each of the key modules comprising: The key bottom cover includes a key bottom cover positioning piece and is detachably located in one of the receiving holes and is located above the circuit board; A driving structure, comprising a driving structure positioning member, wherein the driving structure positioning member is combined with the key bottom cover positioning member; an elastic body, surrounding the driving structure positioning member and the key bottom cover positioning member, and providing elastic force to the driving structure so as to move the driving structure in a direction away from the circuit board; and A reflective plate connected to the bottom surface of the driving structure and comprising a reflective totem; When the driving structure receives external pressure and moves toward the circuit board, the driving structure drives the reflective totem of the reflective plate to move toward the circuit board, so that the circuit board receives a specific electronic signal group generated by the approaching reflective totem.

2. The interchangeable function key group according to claim 1, wherein: The reflective plate further comprises a reflective plate body, and the reflective totem further comprises a plurality of sensing areas.

3. The interchangeable function key group according to claim 2, characterized in that: The plurality of sensing areas are respectively located at a plurality of corners of the reflection plate body.

4. The interchangeable function key group according to claim 2, wherein: The plurality of sensing areas are selectively provided with metal sheets respectively, so that the reflective totem generates the specific electronic signal group when it is close to the circuit board.

5. The interchangeable function key group according to claim 2, characterized in that: The circuit board further includes a plurality of signal sensing modules, each of which includes an Rx circuit and a plurality of Tx circuits; positions of the plurality of Tx circuits correspond to the plurality of sensing areas.

6. The interchangeable function key group according to claim 5, characterized in that: When the driving structure receives the external pressure and moves toward the circuit board, the driving structure will drive the reflective totem of the reflective plate to move toward the circuit board, so that the multiple Tx circuits of the signal sensing module corresponding to the reflective plate will respectively transmit electronic signals to the corresponding sensing areas on the reflective totem, and the sensing area provided with the metal sheet will reflect the electronic signal to the Rx circuit, so that the circuit board will receive the specific electronic signal group generated by the approaching reflective totem.

7. The interchangeable function key group according to claim 1, wherein: Each of the key modules further includes a key upper cover, and the key upper cover is combined with the key lower cover.

8. The interchangeable function key group according to claim 7, characterized in that: The key cover also includes a key cover through-hole; the drive structure also includes a drive structure clamping piece, and the drive structure clamping piece passes through the key cover through-hole.

9. The interchangeable function key group according to claim 2, characterized in that: The reflection plate body further comprises a reflection plate through hole, and the button lower cover positioning piece passes through the reflection plate through hole.

10. The interchangeable function key group according to claim 7, wherein: The button upper cover further includes at least one button upper cover fastening member, and the button lower cover further includes at least one button lower cover first fastening member; the at least one button upper cover fastening member fastens the at least one button lower cover first fastening member.

11. The interchangeable function key group according to claim 8, characterized in that: The key module further includes a key cap, and the key cap further includes a key cap fastening member, and the key cap fastening member fastens the drive structure fastening member.

12. The interchangeable function key group according to claim 5, wherein: The circuit board further includes a signal adjustment module, and the signal adjustment module is signal-connected to the plurality of signal sensing modules.

13. The interchangeable function key group according to claim 5, characterized in that: The circuit board further comprises a signal processing module, and the signal processing module is signal-connected to the plurality of signal sensing modules.

14. The interchangeable function key group according to claim 1, wherein: It also includes a plurality of positioning frames, which are respectively arranged below the plurality of accommodating holes and respectively surround the plurality of key modules.

15. The interchangeable function key group according to claim 13, characterized in that: Each positioning frame also includes a positioning frame foolproofing part, and the key bottom cover also includes a key bottom cover foolproofing part; the positioning frame foolproofing part and the key bottom cover foolproofing part are combined.

16. The interchangeable function key group according to claim 14, wherein: Each positioning frame further includes at least one positioning frame positioning member, and the circuit board further includes a plurality of circuit board positioning holes. The at least one positioning frame positioning member of each positioning frame is respectively combined with the plurality of circuit board positioning holes.

17. The interchangeable function key group according to claim 14, wherein: Each of the positioning frames further includes at least one positioning frame fastening member, and the circuit board further includes a plurality of circuit board fastening grooves, and the at least one positioning frame fastening member of each of the positioning frames fastens the plurality of circuit board fastening grooves respectively.

18. The interchangeable function key group according to claim 14, wherein: The button lower cover also includes at least one button lower cover second fastening member, and the button lower cover second fastening member fastens the positioning frame.

19. The interchangeable function key group according to claim 1, wherein: The button lower cover has a bottom plate thickness, and the bottom plate thickness range is less than 2 mm.

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