Key structure

Abstract

A key structure comprises a key cap, a circuit board and an elastic piece. The circuit board comprises a trigger switch and a conduction circuit group. The trigger switch is arranged on the circuit board. The conduction circuit group is arranged on an upper surface of the circuit board. The conduction circuit group comprises a first conduction circuit and a second conduction circuit. In addition, a gap is formed between the first conduction circuit and the second conduction circuit. The elastic piece is arranged between the circuit board and the key cap. The elastic piece comprises a top part, an inclined wall part, a conduction column and a conductive part. A top surface of the top is in contact with the keycap. One end of the inclined wall part is connected to an outer edge of the top, and the other end is arranged on the circuit board. The conduction column is connected to a bottom surface of the top and corresponds to the trigger switch. The conductive part is arranged on the bottom surface of the top part and is used for conducting the conducting circuit group.

Description

Technical Field

[0001] The invention relates to a key structure. Background Art

[0002] In terms of current computer usage habits, the keyboard is one of the indispensable input devices. Whether it is the computer itself or its peripheral products, they are all developing towards the design concept of light, thin, short and small. The keyboard has also changed from the early large structure to a thin keyboard. Thin keyboards usually use a membrane circuit board, also known as a membrane keyboard. The main components of a membrane keyboard include a membrane circuit board, an elastic member and a keycap. The switch of the membrane circuit board is triggered by pressing the keycap, and the elastic member provides the force for the keycap to return to its original position.

[0003] Generally speaking, each key of a membrane keyboard can only generate a single trigger signal. In other words, when one of the keys is pressed, the same input signal is generated. Therefore, a single key can only generate a single input signal. For some function keys, a single function must be set with a corresponding key, so the overall configuration of the membrane keyboard cannot be reduced, and there is room for improvement. Summary of the invention

[0004] In view of the above problems, the main purpose of the present invention is to provide a key structure, which solves the problem that the conventional key structure lacks multiple trigger functions through a novel design of a circuit board and an elastic member.

[0005] To achieve the above-mentioned purpose, the present invention provides a key structure, which includes a keycap, a circuit board and an elastic member. The circuit board includes a trigger switch and a conduction circuit group. The trigger switch is arranged on the circuit board. The conduction circuit group is arranged on an upper surface of the circuit board. The conduction circuit group includes a first conduction circuit and a second conduction circuit. In addition, the first conduction circuit and the second conduction circuit have a gap. The elastic member is arranged between the circuit board and the keycap. The elastic member includes a top, an inclined wall portion, a conduction column and at least one conductive portion. The top has a top surface and a bottom surface opposite to each other, and the top surface contacts the keycap. One end of the inclined wall portion is connected to an outer edge of the top, and the other end is arranged on the circuit board. The conduction column is connected to the bottom surface of the top, and the conduction column corresponds to the trigger switch. The conductive portion is arranged on the bottom surface of the top to conduct the conduction circuit group.

[0006] According to an embodiment of the present invention, when the keycap is pressed, the conductive column triggers the trigger switch to generate a first input signal, and the conductive portion contacts the interval of the conductive circuit group, part of the first conductive circuit and part of the second conductive circuit to generate a second input signal.

[0007] According to an embodiment of the present invention, the circuit board includes an upper conductive circuit layer, a spacer layer and a lower conductive circuit layer. The spacer layer includes a hollow portion corresponding to the conductive column.

[0008] According to an embodiment of the present invention, the conductive part is a carbon ink.

[0009] According to an embodiment of the present invention, the conductive portion is located between an outer edge of the conductive column and the inclined wall portion.

[0010] According to an embodiment of the present invention, there are a plurality of conductive parts, and the plurality of conductive parts are disposed at intervals on the bottom surface of the top.

[0011] According to an embodiment of the present invention, the conductive portion has a protrusion located on a surface of the conductive portion facing the circuit board.

[0012] According to an embodiment of the present invention, the protrusion has a curved surface or at least one inclined surface.

[0013] According to an embodiment of the present invention, the elastic member further includes a recessed portion disposed on the top surface of the top portion.

[0014] According to an embodiment of the present invention, the recess and the conductive pillar are symmetrically disposed on the top surface and the bottom surface of the top portion.

[0015] According to an embodiment of the present invention, the recess includes a first portion and a second portion. The first portion is close to the top surface of the top portion, and the second portion is close to the bottom surface. An inner diameter of the first portion is different from an inner diameter of the second portion.

[0016] According to an embodiment of the present invention, an inner diameter of the first portion is smaller than an inner diameter of the second portion.

[0017] According to an embodiment of the present invention, the inner diameter of the second portion gradually increases or decreases from the bottom surface to the top surface.

[0018] According to an embodiment of the present invention, an inner diameter of the first portion is smaller than a width of the conductive pillar.

[0019] As described above, according to the key structure of the present invention, it includes a keycap, a circuit board and an elastic member. The circuit board includes a trigger switch and a conduction circuit group. The conduction circuit group includes a first conduction circuit and a second conduction circuit, and the first conduction circuit and the second conduction circuit have a gap. The elastic member includes a top, an inclined wall portion, a conduction column and at least one conductive portion. The conduction column corresponds to the trigger switch. The conductive portion is arranged on the bottom surface of the top and is used to conduct the conduction circuit group. Through the design of the conduction circuit group and the conductive portion of the circuit board, the key structure can generate two different input signals. That is, the conduction column contacts the trigger switch to generate a first input signal, and the conductive portion contacts the conduction circuit group to generate a second input signal, so as to achieve the effect of multiple trigger functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is an exploded schematic diagram of the key structure of the first embodiment of the present invention;

[0021] Figure 2 for Figure 1 A cross-sectional view of the key structure after assembly shown;

[0022] Figure 3 for Figure 1 A schematic diagram of the elastic member shown;

[0023] Figure 4 for Figure 1 A top view of the circuit board is shown;

[0024] Figure 5A for Figure 2 A partially enlarged schematic diagram of the key structure shown;

[0025] Figure 5B and Figure 5C for Figure 5A The schematic diagram of the action of the key structure shown when it is pressed;

[0026] Figure 6 is a schematic diagram of an elastic member according to a second embodiment of the present invention;

[0027] Figure 7 is a schematic diagram of an elastic member according to a third embodiment of the present invention;

[0028] Figure 8 is a schematic diagram of an elastic member according to a fourth embodiment of the present invention;

[0029] Fig. 9 is a schematic diagram of an elastic member according to a fifth embodiment of the present invention;

[0030] Fig.10 is a schematic diagram of an elastic member according to a sixth embodiment of the present invention;

[0031] Fig.11 is a schematic diagram of an elastic member according to a seventh embodiment of the present invention;

[0032] Fig.12 is a schematic diagram of an elastic member according to an eighth embodiment of the present invention;

[0033] Fig.13 FIG. 4 is a schematic diagram of an elastic member according to a ninth embodiment of the present invention.

[0034]

Explanation of symbols

[0035] Key structure 1 key cap 10

[0036] The circuit board 20 has a conductive circuit layer 21

[0037] Upper conducting circuit 211 Spacer layer 22

[0038] The hollow part 221 is connected to the circuit layer 23

[0039] Lower conduction circuit 231 triggers switch 24

[0040] Conducting circuit group 25 First conducting circuit 251

[0041] Second conduction circuit 252 interval 253

[0042] Elastic members 30, 30a, 30b, 30c, 30d, 30e, 30f, 30g, 30h

[0043] Top 31, 31a, 31b, 31c, 31d, 31e, 31f, 31g, 31h

[0044] Top surface 311, 311a, 311b

[0045] Bottom surface 312, 312a, 312b, 312e, 312f, 312g, 312h

[0046] Sloped wall portions 32, 32a, 32b, 32c, 32d, 32e, 32f, 32g, 32h

[0047] Conductive pillars 33, 33a, 33b, 33c, 33d, 33e, 33f, 33g, 33h

[0048] Conductive parts 34, 34a, 34b, 34c, 34d, 34e, 34f, 34g, 34h

[0049] Projections 341f, 341g, 341h

[0050] Recessed portions 35, 35a, 35b, 35c, 35d, 35f

[0051] First part 351, 351a, 351b, 351c, 351d

[0052] Second part 352, 352a, 352b, 352c, 352d DETAILED DESCRIPTION

[0053] In order to better understand the technical content of the present invention, preferred specific embodiments are described below.

[0054] Figure 1 is an exploded schematic diagram of the key structure of the first embodiment of the present invention, Figure 2 for Figure 1 The cross-sectional view of the key structure after assembly shown in FIG. Figure 3 for Figure 1 For a schematic diagram of the elastic member shown, please refer to Figure 1 , Figure 2 and Figure 3As shown. In the present embodiment, the key structure 1 includes a keycap 10, a circuit board 20 and an elastic member 30. Among them, the key structure 1 can be applied to a membrane keyboard. Generally speaking, a membrane keyboard also has a base plate and a scissor-type connector (not shown), and the circuit board 20 is disposed on the base plate, and the scissor-type connector connects the keycap 10 and the base plate. Specifically, the base plate has a hook for connecting the scissor-type connector, and the circuit board 20 may have a plurality of openings corresponding to the hook (not shown), so that one end of the scissor-type connector can be assembled to the base plate. The other end of the scissor-type connector is connected to the keycap 10, so that the keycap 10 is connected to the base plate through the scissor-type connector, and can be raised and lowered relative to the base plate by the guidance of the scissor-type connector.

[0055] In addition, the circuit board 20 of this embodiment can be a thin film circuit board (or a thin film switch circuit board). In this embodiment, the circuit board 20 includes an upper conductive circuit layer 21, a spacer layer 22, and a lower conductive circuit layer 23. Among them, the spacer layer 22 includes a hollow portion 221. The surfaces corresponding to the upper conductive circuit layer 21 and the lower conductive circuit layer 23 respectively have conductive circuits (for example, circuits configured with silver paste lines), which are at least partially located in the hollow portion 221. Figure 2 For example, an upper conducting circuit 211 is disposed on the lower surface of the upper conducting circuit layer 21, and is partially located in the hollow portion 221. A lower conducting circuit 231 is disposed on the upper surface of the lower conducting circuit layer 23, and is partially located in the hollow portion 221. When the keycap 10 is pressed, the elastic member 30 presses down the upper conducting circuit layer 21, so that the upper conducting circuit layer 21 is deformed toward the hollow portion 221, so that the upper conducting circuit 211 can be in contact with the lower conducting circuit layer 23 and conduct, thereby generating a key signal. In this embodiment, this structure for conduction is called a trigger switch 24. That is, the trigger switch 24 of this embodiment is formed by the upper conducting circuit 211 of the upper conducting circuit layer 21, the hollow portion 221 of the spacer layer 22, and the lower conducting circuit 231 of the lower conducting circuit layer 23. In other words, the circuit board 20 of this embodiment includes the trigger switch 24, and the trigger switch 24 is disposed on the circuit board 20. In other embodiments, the circuit board 20 may also be a printed circuit board, and the trigger switch 24 may be a micro switch or an optical switch, which is not limited in the present invention.

[0056] Figure 4 for Figure 1 For a top view of the circuit board shown, refer to Figure 2 and Figure 4As shown. In the present embodiment, the circuit board 20 further includes a conductive circuit group 25, which is disposed on the upper surface of the circuit board 20. That is, the conductive circuit group 25 is disposed on the upper surface of the upper conductive circuit layer 21. Among them, the conductive circuit group 25 includes a first conductive circuit 251 and a second conductive circuit 252. In the present embodiment, the upper conductive circuit 211, the lower conductive circuit 231, the first conductive circuit 251 and the second conductive circuit 252 can all be circuits configured with silver paste lines, for example. In actual implementation, circuits of other materials, such as copper lines, can also be used as required, and the present invention is not limited. In addition, the first conductive circuit 251 and the second conductive circuit 252 have a gap 253. That is, the first conductive circuit 251 and the second conductive circuit 252 are separated from each other and do not contact each other and have a gap 253. It should be noted that the appearance of the circuit board 20 can correspond to a membrane keyboard, for example, a rectangle, and the present diagram only shows a partial structure of the circuit board 20 corresponding to one of the key structures 1.

[0057] Figure 5A for Figure 2 Please refer to the enlarged schematic diagram of the key structure shown in the figure. Figure 1 , Figure 2 , Figure 3 and Figure 5A As shown. The elastic member 30 is disposed between the circuit board 20 and the keycap 10. In this embodiment, the elastic member 30 is a rubber dome, which includes a top 31, an inclined wall 32 and a conductive column 33. The top 31 has a top surface 311 and a bottom surface 312 opposite to each other. The top surface 311 contacts the keycap 10. It should be noted that Figure 3 The elastic member 30 shown is the bottom surface 312 of the top portion 31, so only the bottom surface 312 is indicated. One end of the inclined wall portion 32 is connected to an outer edge of the top portion 31, and the other end is disposed on the circuit board 20. The top portion 31 and the interior of the inclined wall portion 32 together form a hollow structure, which serves as a space for the elastic member 30 to collapse and deform when pressed downward.

[0058] The conductive pillar 33 is connected to the bottom surface 312 of the top 31, so that the conductive pillar 33 faces the circuit board 20. That is, the conductive pillar 33 is a protrusion extending from the bottom surface 312 of the top 31 toward the circuit board 20. In addition, the conductive pillar 33 corresponds to the trigger switch 24. In this embodiment, it is meant that the conductive pillar 33 corresponds to the hollow portion 221 of the spacer layer 22.

[0059] In addition, the elastic member 30 of the present embodiment further includes at least one conductive portion 34. The conductive portion 34 is disposed on the bottom surface 312 of the top portion 31, and the position of the conductive portion 34 corresponds to a portion of the first conductive circuit 251, the second conductive circuit 252 and the interval 253 of the conductive circuit set 25 (the position of the interval 253 is shown in FIG. Figure 4In this embodiment, the conductive portion 34 is distributed on the entire bottom surface 312 of the top portion 31. Figure 3 The bottom surface 312 and the conductive portion 34 are marked at the same place. In addition, the conductive portion 34 avoids the position of the conductive column 33. That is, the conductive portion 34 is located between the outer edge of the conductive column 33 and the inclined wall portion 32. The conductive portion 34 of this embodiment is a carbon ink. For example, the carbon ink is applied to the bottom surface 312 of the top 31 by spraying or printing to form the conductive portion 34 of this embodiment. In other embodiments, the conductive portion 34 can also be other conductive materials or be arranged in other ways, and the present invention is not limited thereto.

[0060] Since the conductive portion 34 is located on the bottom surface 312 of the top portion 31 and the conductive pillar 33 is a protrusion extending toward the circuit board 20 , the conductive pillar 33 is closer to the circuit board 20 than the conductive portion 34 . Figure 5B and Figure 5C for Figure 5A Please refer to the schematic diagram of the action of the key structure when it is pressed. Figure 5A , Figure 5B and Figure 5C When the key cap 10 is pressed, the key cap 10 can press the top 31 of the elastic member 30 downward, the inclined wall portion 32 deforms and causes the conductive pillar 33 to move downward. The conductive pillar 33 first presses the upper conductive circuit 211 downward. The upper conductive circuit 211 is pressed and deforms toward the hollow portion 221, so that the upper conductive circuit 211 located in the hollow portion 221 can contact with the lower conductive circuit layer 23 and conduct, as shown in FIG. Figure 5B That is, the conductive column 33 triggers the trigger switch 24, thereby generating a first input signal. If the keycap 10 is continuously pressed, the inclined wall portion 32 continues to deform, so that the conductive portion 34 located on the bottom surface 312 moves downward closer to the circuit board 20, until the conductive portion 34 contacts part of the first conductive circuit 251, part of the second conductive circuit 252 and the spacer 253 of the conductive circuit group 25. Please refer to Figure 4 and Figure 5C At this time, the first conducting circuit 251 and the second conducting circuit 252 in the conducting circuit set 25 that were originally separated from each other are connected due to the overlapping of the conductive portion 34, thereby generating a second input signal.

[0061] In the present embodiment, the first input signal can be an input signal of the character corresponding to the key structure 1, and the second input signal can be an input signal for executing a function. The key structure 1 is set as the character a and is also used as a power key. When the key structure 1 is pressed, because the conductive column 33 is closer to the circuit board 20, an input signal of the character a (i.e., the first input signal) is generated first, and then when the conductive portion 34 contacts the conductive circuit group 25, an input signal (and a second input signal) for turning the power on or off is generated. In other embodiments, it can also be pre-set that the conductive portion 34 contacts the conductive circuit group 25 for a specific time (e.g., 3 seconds) before the second input signal is generated, and the present invention is not limited thereto. Therefore, through the design of the conductive circuit group 25 and the conductive portion 34 of the circuit board 20, the key structure 1 can generate two different input signals to achieve the effect of multiple trigger functions.

[0062] Preferably, the elastic member 30 further includes a recess 35 disposed on the top surface 311 of the top portion 31. Preferably, the recess 35 and the conductive pillar 33 are disposed on the top surface 311 and the bottom surface 312 of the top portion 31 corresponding to each other. In other words, the recess 35 is disposed on the top surface 311, and the conductive pillar 33 is disposed on the bottom surface 312, and the recess 35 and the conductive pillar 33 correspond to each other. When the elastic member 30 is compressed, the conductive pillar 33 can be compressed and deformed upwards by the design of the recess 35. Figure 5C As shown, when the conductive pillar 33 is limited by the circuit board 20 and cannot move downward, it can move or deform toward the recess 35, so that the conductive portion 34 can move closer to the circuit board 20 to facilitate the conductive portion 34 to contact the conductive circuit set 25 for conduction.

[0063] like Figure 5A As shown, the recessed portion 35 of this embodiment includes a first portion 351 and a second portion 352. The first portion 351 is close to the top surface 311 of the top portion 31, and the second portion 352 is close to the bottom surface 312. The inner diameter of the first portion 351 is different from the inner diameter of the second portion 352. In this embodiment, the inner diameter of the first portion 351 is larger than the inner diameter of the second portion 352, and the inner diameter of the second portion 352 increases gradually from the bottom surface 312 to the top surface 311.

[0064] Figure 6 This is a schematic diagram of an elastic member of a second embodiment of the present invention. Figure 6As shown. In the present embodiment, the elastic member 30a also includes a top 31a, an inclined wall portion 32a, a conductive column 33a, a conductive portion 34a and a recess 35a. Among them, the recess 35a and the conductive column 33a are also symmetrically arranged on the top surface 311a and the bottom surface 312a of the top 31a, and the recess 35a includes a first portion 351a and a second portion 352a. The main difference between the elastic member 30a of the present embodiment and the elastic member 30 of the first embodiment is that the inner diameter of the first portion 351a of the recess 35a is smaller than the inner diameter of the second portion 352a. In the present embodiment, the inner diameter of the second portion 352a gradually increases from the bottom surface 312a to the top surface 311a. Preferably, the inner diameter of the first portion 351a is smaller than a width of the conductive column 33a. Moreover, the maximum inner diameter of the second portion 352a is preferably equal to the maximum width of the conductive pillar 33a (ie, the width of the conductive pillar 33a at the location where the conductive pillar 33a is connected to the bottom surface 312a).

[0065] Figure 7 FIG. 1 is a schematic diagram of an elastic member of a third embodiment of the present invention. Please refer to FIG. Figure 7 As shown. In the present embodiment, the elastic member 30b also includes a top 31b, an inclined wall portion 32b, a conductive column 33b, a conductive portion 34b and a recess 35b. Among them, the recess 35b also includes a first portion 351b and a second portion 352b, and the inner diameter of the first portion 351b is also smaller than the inner diameter of the second portion 352b. Similarly, the inner diameter of the first portion 351b is smaller than the width of the conductive column 33b, and the maximum inner diameter of the second portion 352b is equal to the maximum width of the conductive column 33b. The main difference between the elastic member 30b of the present embodiment and the elastic member 30a of the second embodiment is that the inner diameter of the second portion 352b gradually decreases from the bottom surface 312b to the top surface 311b.

[0066] Figure 8 FIG. 1 is a schematic diagram of an elastic member of a fourth embodiment of the present invention. Please refer to FIG. Figure 8 As shown. In this embodiment, the elastic member 30c also includes a top 31c, an inclined wall portion 32c, a conductive column 33c, a conductive portion 34c and a recess 35c. Among them, the recess 35c also includes a first portion 351c and a second portion 352c. Similarly, the inner diameter of the first portion 351c is smaller than the width of the conductive column 33c. The main difference between the elastic member 30c of this embodiment and the elastic member 30a of the second embodiment is that the inner diameter of the second portion 352c is substantially the same, so that the second portion 352c has a vertical side wall. In addition, the inner diameter of the second portion 352c is equal to the maximum width of the conductive column 33c.

[0067] Fig. 9 FIG. 1 is a schematic diagram of an elastic member of a fifth embodiment of the present invention. Please refer to FIG. Fig. 9As shown. In this embodiment, the elastic member 30d also includes a top 31d, an inclined wall portion 32d, a conductive column 33d, a conductive portion 34d and a recess 35d. Among them, the recess 35d also includes a first portion 351d and a second portion 352d. The main difference between the elastic member 30d of this embodiment and the elastic member 30c of the fourth embodiment is that the second portion 352d has an arc-shaped side wall. Similarly, the inner diameter of the first portion 351d is smaller than the width of the conductive column 33d, and the maximum inner diameter of the second portion 352d is equal to the maximum width of the conductive column 33d.

[0068] Fig.10 FIG. 1 is a schematic diagram of an elastic member of a sixth embodiment of the present invention. Please refer to FIG. Fig.10 In this embodiment, the number of the conductive parts 34e of the elastic member 30e is multiple, and the multiple conductive parts 34e are spaced apart on the bottom surface 312e of the top 31e. Preferably, the conductive parts 34e are also distributed between the outer edge of the conductive column 33e and the inclined wall part 32e. The present invention does not limit the number of conductive parts 34e, which only need to correspond to part of the first conductive circuit 251 and part of the second conductive circuit 252 of the conductive circuit group 25 (please refer to Figure 4 As shown), the first conducting circuit 251 and the second conducting circuit 252 can be turned on to generate the second input signal.

[0069] Fig.11 FIG. 1 is a schematic diagram of an elastic member of the seventh embodiment of the present invention. Please refer to FIG. Fig.11 The elastic member 30f of the present embodiment also includes a top portion 31f, an inclined wall portion 32f, a conductive column 33f, a conductive portion 34f and a recessed portion 35f. Moreover, the conductive portion 34f is disposed on the bottom surface 312f of the top portion 31f. The main difference between the elastic member 30f of the present embodiment and the elastic member 30 of the first embodiment is that the conductive portion 34f of the elastic member 30f has a convex portion 341f, which is located on a surface of the conductive portion 34f facing the circuit board 20 (please refer to the position of the circuit board 20). Figure 1 and Figure 2 In other words, the protrusion 341f is located on the lower surface of the conductive portion 34f. Figure 4 , Figure 5B and Figure 5C As shown, since the conductive circuit set 25 is slightly recessed along with the upper conductive circuit layer 21 , the configuration of the protrusion 341f can ensure that the conductive portion 34f simultaneously contacts the first conductive circuit 251 and the second conductive circuit 252 at the interval 253 , so that the conductive circuit set 25 is turned on and generates a second input signal.

[0070] The lower surface of the protrusion 341f can be an arc-shaped surface, or be composed of at least one inclined surface. In other words, the protrusion 341f has an arc-shaped surface, or at least one inclined surface. In this embodiment, the lower surface of the protrusion 341f is an arc-shaped surface.

[0071] In addition, the inner diameter of the recess 35f of this embodiment is substantially the same, and has a vertical sidewall. In other words, the difference from the above-mentioned embodiment is that the recess 35f of this embodiment does not include the first portion and the second portion.

[0072] Fig.12 FIG. 8 is a schematic diagram of an elastic member of an eighth embodiment of the present invention. Please refer to FIG. Fig.12 The elastic member 30g of this embodiment also includes a top 31g, an inclined wall portion 32g, a conductive column 33g and a conductive portion 34g, and the conductive portion 34g is disposed on the bottom surface 312g of the top 31g. The difference between the elastic member 30g of this embodiment and the elastic member 30f of the seventh embodiment is that the convex portion 341g of the conductive portion 34g has two inclined surfaces. Fig.12 As shown, the lower surface of the protrusion 341g is two connected inclined surfaces, so that the entire protrusion 341g forms a structure similar to a triangular prism.

[0073] Fig.13 FIG. 1 is a schematic diagram of an elastic member of a ninth embodiment of the present invention. Please refer to FIG. Fig.13 As shown. The elastic member 30h of this embodiment also includes a top 31h, an inclined wall portion 32h, a conductive column 33h and a conductive portion 34h, and the conductive portion 34h is disposed on the bottom surface 312h of the top 31h. The difference between the elastic member 30h of this embodiment and the elastic member 30g of the eighth embodiment is that the convex portion 341h of the conductive portion 34h has two inclined surfaces and a flat surface. Fig.13 As shown, the lower surface of the protrusion 341h is formed by two inclined surfaces and a plane. The middle of the protrusion 341h is a plane, and the two opposite sides are respectively connected to the inclined surfaces, so that the protrusion 341h forms a structure similar to a trapezoidal column.

[0074] In summary, according to the key structure of the present invention, it includes a keycap, a circuit board and an elastic member. The circuit board includes a trigger switch and a conduction circuit group. The conduction circuit group includes a first conduction circuit and a second conduction circuit, and the first conduction circuit and the second conduction circuit have a gap. The elastic member includes a top, an inclined wall portion, a conduction column and at least one conductive portion. The conduction column corresponds to the trigger switch. The conductive portion is arranged on the bottom surface of the top for conducting the circuit group. Through the design of the conduction circuit group and the conductive portion of the circuit board, the key structure can generate two different input signals. That is, the conduction column contacts the trigger switch to generate a first input signal, and the conductive portion contacts the conduction circuit group to generate a second input signal, so as to achieve the effect of multiple trigger functions.

[0075] It should be noted that the above embodiments are provided for the purpose of illustration, and the scope of rights claimed by the present invention should be based on the claims, rather than being limited to the above embodiments.

Claims

1. A key structure, characterized in that: include: One key cap; A circuit board, comprising: a trigger switch disposed on the circuit board; and a conducting circuit group, disposed on an upper surface of the circuit board, the conducting circuit group including a first conducting circuit and a second conducting circuit, and a gap exists between the first conducting circuit and the second conducting circuit; and An elastic member is disposed between the circuit board and the key cap, and the elastic member includes: A top portion having a top surface and a bottom surface opposite to each other, the top surface being in contact with the key cap; an inclined wall portion, one end of which is connected to an outer edge of the top portion, and the other end of which is disposed on the circuit board; a conducting column connected to the bottom surface of the top portion, the conducting column corresponding to the trigger switch; and At least one conductive portion is disposed on the bottom surface of the top portion and is used to conduct the conduction circuit group.

2. The key structure according to claim 1, characterized in that: When the key cap is pressed, the conductive column contacts the trigger switch to generate a first input signal, and the conductive portion contacts a portion of the first conductive circuit and a portion of the second conductive circuit of the conductive circuit group to generate a second input signal.

3. The key structure according to claim 1, characterized in that: The circuit board comprises an upper conducting circuit layer, a spacing layer and a lower conducting circuit layer. The spacing layer comprises a hollow portion corresponding to the conducting column.

4. The key structure according to claim 1, characterized in that: The conductive part is carbon ink.

5. The key structure according to claim 1, characterized in that: The conductive portion is located between an outer edge of the conducting column and the inclined wall portion.

6. The key structure according to claim 1, characterized in that: The number of the conductive parts is multiple, and the multiple conductive parts are arranged at intervals on the bottom surface of the top.

7. The key structure according to claim 1, characterized in that: The conductive portion has a protrusion located on a surface of the conductive portion facing the circuit board.

8. The key structure according to claim 8, characterized in that: The convex portion has a curved surface or at least one inclined surface.

9. The key structure according to claim 1, characterized in that: The elastic member further includes a recessed portion disposed on the top surface of the top portion.

10. The key structure according to claim 9, characterized in that: The concave portion and the conducting column are correspondingly arranged on the top surface and the bottom surface of the top portion.

11. The key structure according to claim 9, characterized in that: The recess includes a first portion and a second portion, the first portion is close to the top surface of the top portion, the second portion is close to the bottom surface, and an inner diameter of the first portion is different from an inner diameter of the second portion.

12. The key structure according to claim 11, characterized in that: The inner diameter of the first portion is smaller than the inner diameter of the second portion.

13. The key structure according to claim 12, characterized in that: The inner diameter of the second portion gradually increases or decreases from the bottom surface toward the top surface.

14. The key structure according to claim 11, characterized in that: The inner diameter of the first portion is smaller than a width of the conductive column.

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