TWI666669B - Resilient contact and input device - Google Patents

Abstract

An elastic contact piece and an input device. The elastic contact piece includes a pressing portion, a supporting portion, and an elastic wall portion. The supporting portion is used for supporting the pressing portion on a circuit board. The support portion includes a support plate portion and a support wall portion. The support plate portion is placed on the circuit board, and the support wall portion extends from the support plate portion toward the pressing portion. The elastic wall portion is connected between the pressing portion and the supporting portion. The elastic wall portion bulges from the inside of the support portion and extends to the periphery of the pressing portion. The connection portion between the elastic wall portion and the support portion constitutes a first contact portion. The elastic wall portion includes a first elastic portion, an elastic turning portion, and a second elastic portion. When the pressing portion is pressed by an external force, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward so that the first contact portion touches the circuit board.

Description

Elastic contact and input device

The present invention relates to a contact and an input device, and in particular, to an elastic contact and an input device using the elastic contact.

The keyboard is an important input device for computers and various automation devices. Generally speaking, keyboards include membrane keyboards and mechanical keyboards. Among them, membrane keyboards are more and more popular due to their low cost and simpler production. The membrane keyboard has also become the mainstream in the keyboard market.

However, the existing membrane keyboard has a clear paragraph feel when pressed, and the triggering stroke is long, and it cannot be combined with a mechanical switch to achieve a quick-response switch structure. Therefore, there is still much room for improvement in the trigger stroke, force and feel of the membrane keyboard.

The invention provides an elastic contact piece with a short trigger stroke.

The invention also provides an input device with a short trigger stroke.

Other objects and advantages of the present invention can be further understood from the technical features disclosed by the present invention.

In order to achieve one or a part or all of the foregoing or other objectives, an embodiment of the present invention provides an elastic contact member, which includes: a pressing portion, a supporting portion, and an elastic wall portion. The supporting portion is used for supporting the pressing portion on a circuit board. The support portion includes a support plate portion and a support wall portion. The support board is partially placed on the circuit board. The support wall portion extends from the support plate portion toward the pressing portion. The elastic wall portion is connected between the pressing portion and the supporting portion. The elastic wall portion bulges from the inside of the support portion and extends to the periphery of the pressing portion. A connection portion between the elastic wall portion and the support portion constitutes a first contact portion, wherein the elastic wall portion includes a first elastic portion, an elastic turning portion, and a second elastic portion. The first elastic portion is connected between the support portion and the elastic turning portion. The elastic turning portion is connected between the first elastic portion and the second elastic portion. The second elastic portion is connected between the elastic turning portion and the pressing portion. Wherein, when the pressing portion is not pressed by an external force, both the support wall portion and the first contact portion are kept separated from the circuit board. When the pressing portion is pressed by an external force, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward, so that the first contact portion touches the circuit board.

In order to achieve one or a part or all of the foregoing or other objectives, an embodiment of the present invention provides an input device, including: a circuit board, a mechanical switch, and an elastic contact member. The mechanical switch is located above the circuit board. The mechanical switch includes a housing, a trigger shaft, and an upward restoring force element. The housing has an upper through hole and a lower through hole, the upper through hole is located at the top of the housing, and the lower through hole is located at the bottom of the housing. The trigger shaft is disposed in the housing. The trigger shaft can move up and down relative to the housing between a higher position and a lower position. The top of the trigger shaft can pass through the upper through hole to extend upward from the housing, and the bottom end of the trigger shaft can pass through the lower through hole to extend downward from the housing. The upward restoring force element is disposed in the casing. When the top of the trigger shaft is not pressed by a trigger force, the upward restoring force element moves the trigger axis upward to a higher position. The elastic contact is connected between the mechanical switch and the circuit board. The elastic contact member includes a pressing portion, a supporting portion and an elastic wall portion. The support portion is used to support the pressing portion on the circuit board. The support portion includes a support plate portion and a support wall portion. The support plate portion is placed on the circuit board, and the support wall portion extends from the support plate portion toward the pressing portion. The elastic wall portion is connected between the pressing portion and the supporting portion. The elastic wall portion bulges from the inside of the support portion and extends to the periphery of the pressing portion. A connection portion between the elastic wall portion and the support portion constitutes a first contact portion, wherein the elastic wall portion includes a first elastic portion, an elastic turning portion, and a second elastic portion. The first elastic portion is connected between the support portion and the elastic turning portion. The elastic turning portion is connected between the first elastic portion and the second elastic portion. The second elastic portion is connected between the elastic turning portion and the pressing portion. Wherein, when the top of the trigger shaft is not pressed by the trigger force, the support wall portion and the first contact portion are kept separated from the circuit board. Wherein, when the top of the trigger shaft is pressed by the trigger force, the bottom end portion of the trigger shaft moves downward to protrude out of the casing and abuts to move the pressing portion downward, thereby causing deformation of the elastic turning portion of the elastic wall portion. The elastic wall portion drives the supporting portion to move downward, so that the first contact portion touches the circuit board.

The elastic contact piece and the input device using the elastic contact piece according to the embodiments of the present invention are provided with a pressing portion, a support portion, and an elastic wall portion on the elastic contact piece, and a connection portion between the elastic wall portion and the support portion constitutes a first contact portion. . When the elastic contact is pressed by an external force, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward, so that the first contact portion touches the circuit board. Therefore, the triggering stroke of the elastic contact and the input device during pressing is short, and a quick-response switch structure can be realized.

In order to make the above and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments are described below in detail with reference to the accompanying drawings, as follows.

The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front, or rear, are only directions referring to the attached drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention.

FIG. 1 is a schematic cross-sectional view of an input device K according to an embodiment of the present invention. Referring to FIG. 1, the input device K includes a circuit board 1, a mechanical switch 300 and an elastic contact 100. The mechanical switch 300 is disposed above the circuit board 1. The mechanical switch 300 includes a housing 3, a trigger shaft 5, and an upward restoring force element 7. The trigger shaft 5 can move up and down relative to the housing 3. The elastic contact 100 is connected between the mechanical switch 300 and the circuit board 1. The elastic contact includes a pressing portion 110, a supporting portion 130 and an elastic wall portion 150. Wherein, the connection portion between the elastic wall portion 150 and the support portion 130 constitutes a first contact portion 157. When the top portion 51 of the trigger shaft 5 is not pressed by the trigger force, the first contact portion 157 of the elastic contact member 100 remains separated from the circuit board 1. When the top portion 51 of the trigger shaft 5 is pressed by a trigger force (not shown in FIG. 1), the bottom end portion 53 of the trigger shaft 5 moves downward and abuts the pressing portion 110 of the elastic contact member 100 to move downward, thereby making the elasticity The wall portion 150 is deformed. The elastic wall portion 150 also drives the support portion 130 to move downward, so that the first contact portion 157 touches the circuit board 1 to achieve the purpose of pressing and triggering the input device K. In this embodiment, the elastic contact piece 100 including the support portion 130 and the elastic wall portion 150 is provided, and the first contact portion 157 is provided between the support portion 130 and the elastic wall portion 150 to make the trigger stroke of the input device K shorter. Can realize fast response switch structure. Specific operation details will be described in detail below.

Please refer to FIG. 2 and FIG. 3 at the same time. FIG. 2 is a schematic top view of an input device K according to an embodiment of the present invention, and FIG. 3 is an exploded view of the input device K according to an embodiment of the present invention. Specifically, the housing 3 includes an upper through hole 31 and a lower through hole 33. The upper through hole 31 is located at the top of the casing 3, and the lower through hole 33 is located at the bottom of the casing 3. The trigger shaft 5 is disposed in the housing 3. The trigger shaft 5 can move up and down relative to the housing 3 between a higher position A1 and a lower position (not shown in FIG. 1). The top 51 of the trigger shaft 5 may pass through the upper through hole 31 and protrude out of the housing 3 upward, and the bottom end portion 53 of the trigger shaft 5 may pass through the lower through hole 33 and protrude downward out of the housing 3. The upward restoring force element 7 is disposed in the casing 3. The casing 3 may include, for example, an upper casing 3a and a lower casing 3b, so that the trigger shaft 5 and the upward restoring force element 7 can be conveniently set, but the present invention is not limited thereto. As shown in FIG. 1, when the top 51 of the trigger shaft 5 is not pressed by a trigger force, the upward restoring force element 7 causes the trigger shaft 5 to move upward to a higher position A1.

The elastic contact 100 is connected between the mechanical switch 300 and the circuit board 1. The supporting portion 130 of the elastic contact 100 is used to support the pressing portion 110 on the circuit board 1, and the elastic wall portion 150 is connected between the pressing portion 110 and the supporting portion 130. The elastic wall portion 150 bulges from the inside of the support portion 130 and extends to the periphery of the pressing portion 110. The connection portion between the elastic wall portion 150 and the support portion 130 constitutes a first contact portion 157. As shown in FIG. 1, when the top 51 of the trigger shaft 5 is not pressed by the trigger force, the first contact portion 157 of the elastic contact member 100 is kept separated from the circuit board 1.

Please refer to FIG. 4A and FIG. 4B at the same time. FIG. 4A and FIG. 4B are operation schematic diagrams of the input device K according to an embodiment of the present invention. As shown in FIG. 4A, when the top 51 of the trigger shaft 5 is pressed by the trigger force Fa and the trigger shaft 5 moves to the lower position A2, the bottom end portion 53 of the trigger shaft 5 moves downward to protrude out of the housing 3 and abuts The pressing portion 110 is moved downward, so that the elastic wall portion 150 is deformed. The elastic wall portion 150 also drives the support portion 130 to move downward, so that the first contact portion 157 touches the circuit board 1 to achieve the purpose of triggering the input device K through the first contact portion 157.

Incidentally, the bottom of the pressing portion 110 of the elastic contact 100 may further include, for example, a second contact portion 113. As shown in FIG. 4B, when the top 51 of the trigger shaft 5 is pressed by the trigger force Fb, the trigger shaft 5 continues to move downward from the lower position A2 to the lower position A3, and the bottom end portion 53 of the trigger shaft 5 moves downward and extends. The pressing portion 110 is moved downward by abutting out of the casing 3, and further, the elastic wall portion 150 is deformed in a larger amount. The elastic wall portion 150 drives the supporting portion 130 to move downward, so that both the first contact portion 157 and the second contact portion 113 touch the circuit board 1, and when the first contact portion 157 touches the circuit board 1, the input device is triggered first. K sends a switch conduction signal; then the second contact portion 113 touches the circuit board 1 later to continue the triggering state of the input device K and continue to output the switch conduction signal; thus ensuring that the input device K is in the entire pressing process. It is kept triggered without outputting two interrupted switch conduction signals by mistake, but it is mistakenly judged as two button presses to trigger the action. The detailed operation details of the elastic contact member 100 will be described in detail below.

In addition, the upward return force element 7 of the mechanical switch 300 may be implemented by, for example, a spring, but the present invention is not limited thereto. In addition, the forms and settings of the housing 3, the trigger shaft 5, and the upward return force element 7 of the mechanical switch 300 shown in FIG. 1 to FIG. 4B are only an example, and are not intended to limit the present invention. In addition to the linear spring, it may also be Rubber elastomer, polarized magnet, etc. As long as the trigger shaft 5 is not pressed by the trigger force, the upward restoring force element 7 can move the trigger shaft 5 upward to the higher position A1. A keycap (not shown) may be provided above the mechanical switch 300 for the user to perform a pressing operation, but the present invention is not limited thereto.

Specifically, the circuit board 1 of the input device K further includes a switching electrode 11. The switching electrode 11 can be turned on when being pressed. The switching electrode 11 is provided below the first contact portion 157. When the bottom end portion 53 of the trigger shaft 5 moves downward to protrude out of the housing 3 and abuts the pressing portion 110 to move downward, the first contact portion 157 will contact the switch electrode 11 of the circuit board 1 and cause the switch electrode 11 is turned on, and the purpose of triggering the input device K through the first contact portion 157 is achieved. Incidentally, the switch electrode 11 may be extended and disposed below the second contact portion 113 at the same time, for example. When the bottom end portion 53 of the trigger shaft 5 moves downward to protrude out of the housing 3 and abuts the pressing portion 110 to move downward, so that the second contact portion 113 touches the switch electrode 11 of the circuit board 1, the switch electrode can be made 11 is turned on, and the first contact portion 157 first touches the outer peripheral area of the switch electrode 11 and first triggers the input device K to send a switch conduction signal; then the second contact portion 113 later touches the center area of the switch electrode 11 to continue input The triggering state of the device K continues to output the switch conduction signal; this ensures that the input device K is kept triggered during the entire pressing process, and does not erroneously output two interrupted switch conduction signals, which is mistakenly judged as two key presses. Press to trigger the action.

Please refer to FIG. 5 and FIG. 6 at the same time, FIG. 5 is a schematic diagram of the elastic contact member 100 of the embodiment shown in FIG. 1 to FIG. 4B, and FIG. 6 is a partial cross-sectional schematic diagram of the elastic contact member 100 of the embodiment shown in FIG. . In detail, the elastic contact 100 includes a pressing portion 110, a supporting portion 130, and an elastic wall portion 150. The support portion 130 is used to support the pressing portion 110 on the circuit board 1. The support portion 130 includes a support plate portion 131 and a support wall portion 133. The support plate portion 131 is placed on the circuit board 1. The support wall portion 133 extends from the support plate portion 131 toward the pressing portion 110. The elastic wall portion 150 is connected between the pressing portion 110 and the supporting portion 130. The elastic wall portion 150 bulges from the inside of the support portion 130 and extends to the periphery of the pressing portion 110. The connection portion between the elastic wall portion 150 and the support portion 130 constitutes a first contact portion 157. The elastic wall portion 150 includes a first elastic portion 153, an elastic turning portion 151, and a second elastic portion 155. The first elastic portion 153 is connected between the support portion 130 and the elastic turning portion 151. The elastic turning portion 151 is connected between the first elastic portion 153 and the second elastic portion 155. The second elastic portion 155 is connected between the elastic turning portion 151 and the pressing portion 110.

As shown in FIG. 6, when the pressing portion 110 is not pressed by an external force, the height of the pressing portion 110 is located at the position B1, and the support wall portion 133 and the first contact portion 157 are kept separated from the circuit board 1. When the pressing portion 110 is pressed by an external force (not shown in FIG. 6), the elastic turning portion 151 of the elastic wall portion 150 is deformed, and the elastic wall portion 150 drives the supporting portion 130 to move downward to make the first contact portion 157. Touch the circuit board 1.

Please refer to FIGS. 7A to 7D at the same time. FIGS. 7A to 7D are schematic diagrams of operations of the elastic contact member 100 according to an embodiment of the present invention. As shown in FIG. 7A, when the pressing portion 110 of the elastic contact 100 is pressed by the external force F1 to move downward by the first distance d1, the height of the pressing portion 110 is moved from the position B1 to the position B2. The elastic wall portion 150 drives the supporting portion 130 to move downward, so that the first contact portion 157 touches the circuit board 1. Next, as shown in FIG. 7B, when the pressing portion 110 of the elastic contact 100 is pressed by the external force F2 and continues to move downward from the position B2 to the position B3, the elastic turning portion 151 of the elastic wall portion 150 will further bend. Next, as shown in FIG. 7C, when the pressing portion 110 is pressed by the external force F3 to move downward from the position B1 for a second distance d2, and the pressing portion 110 is moved from the position B1 to the position B4, the elastic turning portion 151 of the elastic wall portion 150 will Further bent, both the first contact portion 157 and the second contact portion 113 of the pressing portion 110 touch the circuit board 1. The second distance d2 is greater than the first distance d1. Next, as shown in FIG. 7D, when the pressing portion 110 of the elastic contact member 100 is pressed by the external force F4 and continues to move downward from the position B4 to the position B5, the elastic turning portion 151 of the elastic wall portion 150 will further bend; A contact portion 157 may be separated from the outer peripheral area of the switch electrode 11, but because the second contact portion 113 is still in contact with the center area of the switch electrode 11, the trigger state of the input device K may be continued, and the switch conduction signal is continuously output. In order to avoid misoperation, two interrupted switch conduction signals are output, and it is mistakenly judged as two button presses to trigger the action. Among them, as shown in FIGS. 1, 4A, and 4B, when the external forces F1, F2, F3, and F4 are pressed when the trigger shaft 5 is pressed by the trigger force, the bottom end portion 53 of the trigger shaft 5 moves downward to abut the pressing portion. 110 produced.

Please refer to FIG. 8 at the same time. FIG. 8 is a schematic diagram of a force curve of the elastic contact member 100 according to an embodiment of the present invention. The X-axis of FIG. 8 shows the stroke of the pressing portion 110 moving downward, and the Y-axis shows the magnitude of the external force pressing the pressing portion 110. When the pressing portion 110 is not pressed by an external force (external force = 0g), the pressing portion 110 is located at the position B1. When the pressing portion 110 is pressed by the external force F1, the pressing portion 110 is moved from the position B1 to the position B2, so that the first contact portion 157 touches the circuit board 1. When the pressing portion 110 is moved downward by being pressed by the external force F2, the elastic turning portion 151 of the elastic wall portion 150 is further bent. When the pressing portion 110 is moved downward from the position B1 by the second distance d2 by the external force F3, the pressing portion 110 is moved from the position B1 to the position B4, and the elastic turning portion 151 of the elastic wall portion 150 will further bend. A contact portion 157 and a second contact portion 113 both touch the circuit board 1. When the pressing portion 110 is moved downward by being pressed by the external force F4, the elastic turning portion 151 of the elastic wall portion 150 is further bent. Therefore, as can be seen from FIG. 8, as long as the external force F1 is small, the first contact portion 157 can contact the circuit board 1 to trigger the input device K. In this embodiment, the elastic contact piece 100 including the support portion 130 and the elastic wall portion 150 is provided, so that the triggering stroke of the input device K when pressed is short, and a quick-response switch structure can be realized. It is also possible to adjust the feel when pressing the input device K.

Specifically, the elastic turning portion 151 of the elastic wall portion 150 includes a first turning portion 1511 and a second turning portion 1513. The first turning portion 1511 is located at a connection between the elastic turning portion 151 and the first elastic portion 153, and the second turning portion 1513 is located at a connection between the elastic turning portion 151 and the second elastic portion 155. When the pressing portion 110 is pressed by an external force, the first turning portion 1511 and / or the second turning portion 1513 are bent to drive the supporting portion 130 to move downward. In detail, when the pressing portion 110 is pressed down by the external force F1 to move downward for a first distance d1, the first turning portion 1511 and / or the second turning portion 1513 are bent, and the elastic wall portion 150 drives the supporting portion 130 to move downward to The first contact portion 157 is caused to touch the circuit board 1. When the pressing portion 110 is pressed downward by the external force F3 and moves downward by the second distance d2, the first turning portion 1511 and / or the second turning portion 1513 are bent, so that both the first contact portion 157 and the second contact portion 113 touch the circuit. Board 1.

Incidentally, the bottom surface of the first contact portion 157 of the elastic contact member 100 may be formed with, for example, a first contact surface 1573 for contacting the circuit board 1 when the pressing portion 110 is depressed, so as to achieve transmission through the first contact surface. 1573 Trigger the purpose of input device K.

In addition, the first contact portion 157 of the elastic contact 100 may include, for example, a first contact 1571 extending downward. The bottom surface of the first contact 1571 forms a first contact surface 1573 for contacting the circuit board 1 when the pressing portion 110 is depressed, so as to achieve the purpose of triggering the input device K through the first contact surface 1573. Through the setting of the first contact 1571, the feel of the pressing input device K can be further adjusted, for example, the triggering stroke can be shortened. The shape and type of the first contact member 1571 shown in FIG. 6 is merely an example, and is not intended to limit the present invention. In other embodiments of the present invention, the first contact portion 157 may not include the first contact member 1571, for example, and only includes the first contact surface 1573.

In addition, the bottom surface of the second contact portion 113 of the pressing portion 110 of the elastic contact 100 can be formed with, for example, a second contact surface 1133 for contacting the circuit board 1 when the pressing portion 110 is depressed, so as to reach the second contact surface 1133 Trigger the purpose of the input device K.

On the other hand, the second contact portion 113 of the pressing portion 110 of the elastic contact 100 may further include, for example, a second contact 1131 extending downward, and a bottom surface of the second contact 1131 is formed to be depressed by the pressing portion 110. The second contact surface 1133 is in contact with the circuit board 1 at the time. Through the setting of the second contact 1131, the feel of the pressing input device K can be further adjusted. The shape and type of the second contact element 1131 shown in FIG. 6 is merely an example, and is not intended to limit the present invention. In other embodiments of the present invention, for example, the second contact portion 113 may not include the second contact member 1131 and only include the second contact surface 1133.

It is worth noting that when the pressing portion 110 of the elastic contact 100 is not pressed by an external force, the height of the elastic turning portion 151 of the elastic wall portion 150 is higher than or equal to the height of the first elastic portion 153. When the pressing portion 110 is pressed by an external force, the height of the elastic turning portion 151 is lower than the height of the first elastic portion 153. The thickness of the pressing portion 110 of the elastic contact 100 is, for example, greater than the wall thickness of the elastic wall portion 150. Therefore, when the pressing portion 110 is pressed by an external force, the elastic wall portion 150 may deform, but the present invention is not limited thereto.

Incidentally, the pressing portion 110 of the elastic contact 100 may further include, for example, a recessed portion 111 recessed downward from the upper surface of the pressing portion 110. As shown in FIG. 1, FIG. 4A or FIG. 4B, the depression 111 corresponds to the bottom 53 of the trigger shaft 5 of the mechanical switch 300, and the bottom 53 of the trigger shaft 5 is in contact with the depression 111. Through the setting of the recessed portion 111, when the top 51 of the trigger shaft 5 is pressed by the trigger force, the bottom end portion 53 of the trigger shaft 5 abuts the recessed portion 111 and moves the pressing portion 110 downward. Therefore, the mechanical switch 300 can effectively and accurately drive the movement of the elastic contact member 100 when being pressed.

Please refer to FIG. 9, which is a schematic diagram of a contact film according to an embodiment of the present invention. The contact film M includes a connection film 200 and a plurality of elastic contacts 100 described in FIGS. 1 to 8. The support plate portion 131 of each elastic contact 100 is connected to the connection film 200. These elastic contacts 100 and the connection film 200 may be integrally formed, for example. The elastic contact members 100 and the connection film 200 may be integrally formed of, for example, a silicone material, but the present invention is not limited thereto. The contact film M including the plurality of elastic contacts 100 can be applied to, for example, an input device such as a keyboard, but the present invention is not limited thereto.

In summary, the elastic contact piece and the input device using the elastic contact piece according to the embodiments of the present invention are provided with a pressing portion, a support portion, and an elastic wall portion on the elastic contact piece, and the elastic wall portion and the support portion are connected. The first contact portion is formed everywhere. When the elastic contact is pressed by an external force, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward, so that the first contact portion touches the circuit board. Therefore, the triggering stroke of the elastic contact and the input device during pressing is short, and a quick-response switch structure can be realized.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains may make some modifications and retouching without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the appended patent application.

1‧‧‧Circuit Board

11‧‧‧ switch electrode

100‧‧‧Elastic contact

110‧‧‧Pressing section

111‧‧‧ Depression

113‧‧‧Second contact section

1131‧‧‧Second contact

1133‧‧‧Second contact surface

130‧‧‧ support

131‧‧‧ support plate

133‧‧‧ support wall

150‧‧‧ elastic wall

151‧‧‧Flexible turning part

1511‧‧‧The first turning part

1513‧‧‧The second turning part

153‧‧‧The first elastic part

155‧‧‧The second elastic part

157‧‧‧First contact

1571‧‧‧First contact

1573‧‧‧First contact surface

3‧‧‧shell

3a‧‧‧upper shell

3b‧‧‧lower case

31‧‧‧upper hole

33‧‧‧Lower through hole

5‧‧‧Trigger axis

51‧‧‧Top

53‧‧‧ bottom end

7‧‧‧ Upward restoring force element

300‧‧‧ mechanical switch

200‧‧‧Connecting film

A1‧‧‧Higher

A2‧‧‧ lower position

A3‧‧‧ lower position

B1, B2, B3, B4, B5‧‧‧ position

d1‧‧‧first distance

d2‧‧‧second distance

F1, F2, F3, F4‧‧‧ external force

Fa, Fb‧‧‧Trigger

K‧‧‧ input device

M‧‧‧contact film

FIG. 1 is a schematic cross-sectional view of an input device according to an embodiment of the present invention. FIG. 2 is a schematic top view of an input device according to an embodiment of the present invention. FIG. 3 is an exploded view of an input device according to an embodiment of the present invention. 4A and 4B are schematic diagrams of operations of an input device according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an elastic contact member according to an embodiment of the present invention. FIG. 6 is a schematic partial cross-sectional view of an elastic contact member according to an embodiment of the present invention. 7A to 7D are schematic diagrams of operations of an elastic contact member according to an embodiment of the present invention. FIG. 8 is a schematic diagram of a force curve of an elastic contact member according to an embodiment of the present invention. FIG. 9 is a schematic diagram of a contact film according to an embodiment of the present invention.

Claims (15)

An elastic contact includes: a pressing portion for pressing operation; a supporting portion for supporting the pressing portion on a circuit board, the supporting portion including a supporting plate portion and a supporting wall portion, the supporting plate Partly placed on the circuit board, the support wall portion extending from the support plate portion toward the pressing portion; and an elastic wall portion connected between the pressing portion and the supporting portion, the elastic wall portion Raising from the inner side of the support portion and extending to the periphery of the pressing portion, the connection portion of the elastic wall portion and the support portion constitutes a first contact portion, wherein the elastic wall portion includes a first elastic portion, an elastic turning portion And a second elastic portion, the first elastic portion is connected between the support portion and the elastic turning portion, the elastic turning portion is connected between the first elastic portion and the second elastic portion, and the second elastic portion Connected between the elastic turning portion and the pressing portion; wherein when the pressing portion is not pressed by an external force, the support wall portion and the first contact portion are kept separate from the circuit board Wherein, when the pressing portion is pressed by the external force, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward so that the first contact portion touches the circuit board. The elastic contact according to item 1 of the scope of patent application, wherein the elastic turning portion includes a first turning portion and a second turning portion, and the first turning portion is located at a connection between the elastic turning portion and the first elastic portion. Where the second turning portion is located at a connection between the elastic turning portion and the second elastic portion, and when the pressing portion is pressed by the external force, the first turning portion and / or the second turning portion are bent to drive the The support moves downward. The elastic contact according to item 1 of the patent application, wherein the bottom surface of the first contact portion forms a first contact surface for contacting the circuit board when the pressing portion is depressed. The elastic contact according to item 1 of the patent application scope, wherein the first contact portion includes a first contact extending downward, and a bottom surface of the first contact is formed for contacting the pressing portion when the pressing portion is depressed. A first contact surface that the circuit board contacts. The elastic contact according to item 1 of the patent application range, wherein when the pressing portion is not pressed by the external force, the height of the elastic turning portion is higher than or equal to the height of the first elastic portion; wherein when the pressing portion is subjected to the external force When pressed, the height of the elastic turning portion is lower than the height of the first elastic portion. The elastic contact according to item 3 of the patent application, wherein the bottom of the pressing portion includes a second contact portion, and a bottom surface of the second contact portion is formed for contacting the circuit board when the pressing portion is depressed. A second contact surface; wherein, when the pressing portion is pressed down by the external force to move downward for a first distance, the elastic wall portion drives the supporting portion to move downward so that the first contact portion touches the circuit board When the pressing portion is pressed down by the external force to move down a second distance, the second contact portion touches the circuit board, and the second distance is greater than the first distance. The elastic contact according to item 6 of the scope of patent application, wherein the elastic turning portion includes a first turning portion and a second turning portion, and the first turning portion is located at a connection between the elastic turning portion and the first elastic portion. Where the second turning portion is located at a connection between the elastic turning portion and the second elastic portion, and when the pressing portion is pressed down by the external force to move the first distance downward, the first turning portion and / or the first turning portion The two turning portions are bent, the elastic wall portion drives the supporting portion to move downward, so that the first contact portion touches the circuit board, and when the pressing portion is pressed downward by the external force to move the second distance downward, the first A turning portion and / or the second turning portion is bent so that the second contact portion touches the circuit board. The elastic contact according to item 6 of the patent application, wherein the second contact portion includes a second contact extending downwards, and a bottom surface of the second contact is formed for contacting the pressing portion when the pressing portion is depressed. A second contact surface that the circuit board contacts. The elastic contact according to item 1 of the patent application scope, wherein a thickness of the pressing portion is greater than a wall thickness of the elastic wall portion. A contact film includes a connection film and a plurality of elastic contact members according to any one of claims 1 to 9. The elastic contact members and the connection film are integrally formed. An input device includes: a circuit board; a mechanical switch disposed above the circuit board, the mechanical switch comprising: a housing having an upper through hole and a lower through hole, the upper through hole The trigger shaft is located at the top of the housing, and the lower through hole is located at the bottom of the housing. The trigger shaft is disposed in the housing, and the trigger shaft can move up and down relative to the housing between a higher position and a lower position. , The top of the trigger shaft may pass through the upper through hole and protrude upward from the housing, and the bottom end of the trigger shaft may pass through the lower through hole and protrude downward from the housing; and an upward restoring force element, provided In the housing, when the top of the trigger shaft is not pressed by a trigger force, the upward restoring force element moves the trigger axis upward to the higher position; and an elastic contact member connected to the mechanical switch Between the circuit board and the circuit board, the elastic contact includes: a pressing portion; a supporting portion for supporting the pressing portion on the circuit board; the supporting portion includes a supporting plate portion and a supporting wall portion; Board section Placed on the circuit board, the support wall portion extends from the support plate portion toward the pressing portion; and an elastic wall portion connected between the pressing portion and the supporting portion, the elastic wall portion is from The inner side of the support portion bulges and extends to the periphery of the pressing portion, and the connecting portion of the elastic wall portion and the support portion forms a first contact portion, wherein the elastic wall portion includes a first elastic portion, an elastic turning portion, and A second elastic portion is connected between the support portion and the elastic turning portion, the elastic turning portion is connected between the first elastic portion and the second elastic portion, and the second elastic portion is connected Between the elastic turning portion and the pressing portion; wherein when the top of the trigger shaft is not pressed by the triggering force, the support wall portion and the first contact portion are kept separated from the circuit board; wherein when the When the top of the trigger shaft is pressed by the trigger force, the bottom end portion of the trigger shaft moves downward to protrude out of the casing and abuts to move the pressing portion downward, thereby causing the elastic turning of the elastic wall portion. Partial deformation occurs, the elastic wall portion drives the support portion to move downward, so that the first contact portion touches the circuit board. The input device according to item 11 of the patent application scope, wherein the circuit board further includes at least one switch electrode, the switch electrode is disposed below the first contact portion, and when the bottom end portion of the trigger shaft moves downward and protrudes When the pressing portion is moved downward by abutting against the casing, the elastic turning portion of the elastic wall portion is deformed, and the elastic wall portion drives the supporting portion to move downward so that the first contact portion touches the The switch electrode of the circuit board. The input device according to item 11 of the patent application scope, wherein a bottom surface of the first contact portion forms a first contact surface for contacting the circuit board when the pressing portion is depressed, and the bottom of the pressing portion includes A second contact portion, a bottom surface of the second contact portion forms a second contact surface for contacting the circuit board when the pressing portion is depressed, the circuit board further includes at least one switch electrode, and the switch electrodes extend at the same time Under the first contact surface and the second contact surface; wherein, when the bottom end portion of the trigger shaft moves downward to protrude out of the housing and abuts the pressing portion to move downward by a first distance, the The elastic wall portion drives the support portion to move downward, so that the first contact portion touches the switch electrode to make the switch electrode conductive. When the bottom end portion of the trigger shaft moves downward to protrude out of the housing and abuts, When the pressing portion moves downward for a second distance, at least the second contact portion touches the switch electrode to make the switch electrode conductive, and the second distance is greater than the first distance. The input device according to item 13 of the scope of patent application, wherein the elastic turning portion of the elastic contact includes a first turning portion and a second turning portion, and the first turning portion is located between the elastic turning portion and the first turning portion. At the connection point of the elastic portion, the second turning portion is located at the connection portion between the elastic turning portion and the second elastic portion. When the bottom end portion of the trigger shaft moves downward to protrude out of the housing, the abutting portion causes the pressing portion to When moving the first distance downward, the first turning portion and / or the second turning portion are bent, and the elastic wall portion drives the supporting portion to move downward so that the first contact portion touches the switch electrode, and when the When the bottom end portion of the trigger shaft moves downward to protrude out of the housing and abuts the pressing portion to move downward by the second distance, the first turning portion and / or the second turning portion are bent to make the second turning portion The contact portion touches the switch electrode. The input device according to item 11 of the patent application scope, wherein the pressing portion includes a recessed portion recessed downward from the upper surface of the pressing portion, the recessed portion corresponds to the bottom of the trigger shaft, and the bottom of the trigger shaft and the The depression is in contact.