CN117352322A - Keyboard device and key structure thereof - Google Patents

Keyboard device and key structure thereof Download PDF

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Publication number
CN117352322A
CN117352322A CN202210741317.5A CN202210741317A CN117352322A CN 117352322 A CN117352322 A CN 117352322A CN 202210741317 A CN202210741317 A CN 202210741317A CN 117352322 A CN117352322 A CN 117352322A
Authority
CN
China
Prior art keywords
key
keycap
key cap
circuit board
keyframe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210741317.5A
Other languages
Chinese (zh)
Inventor
李哲安
张胜帆
蔡磊龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primax Electronics Ltd
Original Assignee
Primax Electronics Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Primax Electronics Ltd filed Critical Primax Electronics Ltd
Priority to CN202210741317.5A priority Critical patent/CN117352322A/en
Publication of CN117352322A publication Critical patent/CN117352322A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H01H13/7065—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard

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  • Push-Button Switches (AREA)

Abstract

The invention provides a keyboard device and a key structure thereof. The keyboard device comprises a plurality of key structures, wherein each key structure comprises a key cap, a circuit board, a key frame, a conducting piece and an infrared sensor. The circuit board is arranged below the keycap. The key frame is arranged between the key cap and the circuit board, the key cap can move up and down relative to the key frame, and the key frame comprises an opening. The conducting piece is arranged between the keycap and the keyframe and corresponds to the opening of the keyframe. The infrared sensor is configured on the circuit board. The infrared sensor comprises a transmitting part and a receiving part, and a sensing area is defined between the transmitting part and the receiving part. In the process that the keycap descends and moves towards the direction close to the keyframe, the keycap drives the conducting piece to move into the sensing area through the opening, and then the infrared sensor is triggered to generate a switch signal.

Description

Keyboard device and key structure thereof
Technical Field
The present invention relates to the field of input devices, and more particularly, to a keyboard device and a key structure thereof.
Background
With the technological change, electronic devices are becoming more convenient for human life, so it is an important task to make the operation of the electronic devices more humanized. Common input devices of electronic devices include a mouse device, a keyboard device, and a track ball device, wherein the keyboard device is used for a user to directly input characters and symbols into a computer, and thus considerable attention is paid.
The keyboard device comprises a plurality of key structures, and each key structure mainly comprises a key cap, a scissor type connecting component, a thin film circuit board and a supporting plate which are stacked in sequence. Specifically, the thin film circuit board is provided with a thin film switch, an elastic element is arranged between the key cap and the thin film circuit board, the scissor type connecting component is connected between the key cap and the supporting plate and comprises a first frame and a second frame pivoted to the first frame, and therefore the first frame and the second frame can swing relatively to each other. When the keycaps of any key structure are pressed and move downwards relative to the supporting plate, the first frame and the second frame of the scissor type connecting assembly are changed from the opening and closing state to the overlapping state, and the downward moving keycaps squeeze the elastic elements to enable the elastic elements to abut against and trigger the corresponding membrane switches, so that the keyboard device generates corresponding switch signals.
In addition, the keyboard device can also utilize an infrared sensor to replace the membrane switch as a component for generating the switch signal besides generating the switch signal by triggering the membrane switch on the membrane circuit board. The infrared sensor comprises an infrared emitting element and an infrared receiving element which are opposite to each other, and a sensing area is defined between the infrared emitting element and the infrared receiving element. When the keycap of any key structure is touched and pressed to move downwards relative to the supporting plate, the trigger element positioned on the scissor type connecting component is simultaneously driven to move downwards to a sensing area between the infrared emitting element and the infrared receiving element, and then the infrared sensor is triggered to generate a switch signal.
However, in the conventional keyboard device with an infrared sensor, the triggering element for triggering the infrared sensor is configured on the scissor-type connecting component, but the triggering element cannot accurately move to the sensing area between the infrared transmitting element and the infrared receiving element due to the deformation of the scissor-type connecting component caused by uneven stress in the process of actuation, which results in the problem that the infrared sensor cannot be triggered. Therefore, how to improve the above problems is a focus of attention of those skilled in the art.
Disclosure of Invention
One of the objectives of the present invention is to provide a keyboard device, in which the key structure triggers the infrared sensor to generate a switch signal through the conducting element on the key cap.
It is still another object of the present invention to provide a key structure, which triggers an infrared sensor to generate a switch signal through a conductive member on a key cap.
Other objects and advantages of the present invention will be further appreciated from the technical features disclosed in the present invention.
In order to achieve one or a part or all of the above or other objects, the present invention provides a keyboard device comprising a plurality of key structures, each key structure comprising a key cap, a circuit board, a key frame, a conductive member and an infrared sensor. The circuit board is arranged below the keycap. The key frame is arranged between the key cap and the circuit board, the key cap can move up and down relative to the key frame, and the key frame comprises an opening. The conducting piece is arranged between the keycap and the keyframe and corresponds to the opening of the keyframe. The infrared sensor is configured on the circuit board. The infrared sensor comprises a transmitting part and a receiving part, and a sensing area is defined between the transmitting part and the receiving part. In the process that the keycap descends and moves towards the direction close to the keyframe, the keycap drives the conducting piece to move into the sensing area through the opening, and then the infrared sensor is triggered to generate a switch signal.
In an embodiment of the invention, the conductive member includes a sleeve portion and a triggering portion, wherein the triggering portion is located between the sleeve portion and the circuit board, and the triggering portion of the conductive member is located between the transmitting portion and the receiving portion when the conductive member is driven by the keycap to move into the sensing area through the opening of the keyframe.
In an embodiment of the invention, each of the key structures further includes a first elastic element. The first elastic element is connected between the key cap and the conducting piece and is positioned in the sleeve part of the conducting piece, when the first elastic element is in an uncompressed state, a gap is reserved between the sleeve part of the conducting piece and the key cap, and when the conducting piece is driven by the key cap to move into the sensing area through the opening of the key frame, the sleeve part of the conducting piece compresses the first elastic element, and the sleeve part is contacted with the key cap.
In an embodiment of the invention, each of the key structures further includes a spring. The spring plate is arranged on the circuit board and extends towards the direction close to the conducting piece through the opening of the key frame. The conducting piece further comprises an interference surface, the interference surface is located on the sleeve part and faces the circuit board, and the interference surface contacts the elastic sheet to interfere with each other in the process that the conducting piece is driven by the keycap and moves into the sensing area through the opening of the keyframe.
In an embodiment of the invention, each of the key structures further includes a first elastic portion, a second elastic portion, and an interference pillar, wherein the first elastic portion and the second elastic portion are disposed on the key frame, and the first elastic portion and the second elastic portion extend toward a direction approaching the key cap and are inclined toward each other. The interference cylinder is arranged on the keycap, extends towards the direction close to the keyframe and corresponds to the space between the first elastic part and the second elastic part, and is contacted between the first elastic part and the second elastic part to interfere with each other in the process that the keycap descends towards the direction close to the keyframe.
In an embodiment of the invention, each of the key structures further includes a connection assembly, the connection assembly is disposed between the keycap and the keyframe, and the keycap is lifted and moved relative to the keyframe through the connection assembly.
In an embodiment of the invention, each of the key structures further includes a glue layer. The adhesive layer is arranged between the key frame and the circuit board, and the key frame and the circuit board are adhered to each other through the adhesive layer.
In an embodiment of the invention, the key frame further includes a hollow boss. The hollow boss comprises a surrounding wall and a bottom wall, the surrounding wall extends from the bottom wall towards the direction close to the key cap, and the opening is formed in the bottom wall.
In an embodiment of the invention, each of the key structures further includes a second elastic element. The second elastic element is arranged between the bottom wall of the hollow boss and the key cap, and the surrounding wall of the hollow boss surrounds the second elastic element. In the process that the keycap descends and moves towards the direction close to the keyframe, the second elastic element is pushed by the moving keycap to be in a compressed state, and when the second elastic element is not pushed by the keycap any more, the generated elastic restoring force is relieved through the compressed state of the second elastic element, so that the keycap moves and resets towards the direction away from the keyframe.
In order to achieve one or a part or all of the above or other objects, the present invention further provides a key structure including a key cap, a circuit board, a key frame, a conductive member and an infrared sensor. The circuit board is arranged below the keycap. The key frame is arranged between the key cap and the circuit board, the key cap can move up and down relative to the key frame, and the key frame comprises an opening. The conducting piece is arranged between the keycap and the keyframe and corresponds to the opening of the keyframe. The infrared sensor is configured on the circuit board. The infrared sensor comprises a transmitting part and a receiving part, and a sensing area is defined between the transmitting part and the receiving part. In the process that the keycap descends and moves towards the direction close to the keyframe, the keycap drives the conducting piece to move into the sensing area through the opening, and then the infrared sensor is triggered to generate a switch signal.
According to the keyboard device, the key structure triggers the infrared sensor on the circuit board through the conducting piece connected to the inner surface of the key cap, and the elastic force is increased between the conducting piece and the key cap through the first elastic element, so that the triggering stability of the infrared sensor triggered by the conducting piece is increased. In addition, in the process that the keycap descends towards the direction close to the keyframe according to the touch of external force, the infrared sensor can be triggered directly through the conducting piece positioned on the keycap, and the pressed section sense and feedback sound can be generated through the interference cylinder positioned on the keycap and the first elastic part and the second elastic part positioned on the keyframe or through the interference surface positioned on the conducting piece and the elastic piece positioned on the circuit board.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
Fig. 1 is a schematic view of an external structure of a keyboard device according to an embodiment of the invention.
Fig. 2 is a schematic perspective view of the key structure shown in fig. 1.
Fig. 3 is an exploded schematic view of the key structure shown in fig. 2.
Fig. 4 is a schematic cross-sectional view along line AA shown in fig. 2.
Fig. 5 is a schematic cross-sectional view of the key structure shown in fig. 4 after being pressed.
Fig. 6 is a schematic cross-sectional view along the line BB shown in fig. 2.
Fig. 7 is a schematic cross-sectional view of the key structure shown in fig. 5 after being pressed.
Fig. 8 is a schematic perspective view of a key structure according to another embodiment of the invention.
Fig. 9 is an exploded schematic view of the key structure shown in fig. 8.
Fig. 10 is a schematic cross-sectional view along the line CC shown in fig. 8.
The reference numerals are as follows:
1: keyboard device
10. 10a: key structure
101: key cap
102: circuit board
103. 103a: key frame
104. 104a: conduction piece
105: infrared sensor
106: first elastic element
107: connection assembly
108: adhesive layer
109: second elastic element
1011: outer surface
1012: inner surface
1030: an opening
1031: hollow boss
1032: surrounding side wall
1041: sleeve part
1042: trigger part
1043: interference surface
1051: transmitting part
1052: receiving part
10311: surrounding wall body
10312: bottom wall
B1: a first elastic part
B2: a second elastic part
B3: interference cylinder
G: gap of
P: spring plate
R: sensing region
S1: inner wall surface
S2: bottom surface
Detailed Description
Referring to fig. 1 to 6, fig. 1 is a schematic view of an external structure of a keyboard device according to an embodiment of the invention. Fig. 2 is a schematic perspective view of the key structure shown in fig. 1. Fig. 3 is an exploded schematic view of the key structure shown in fig. 2. Fig. 4 is a schematic cross-sectional view along line AA shown in fig. 2. Fig. 5 is a schematic cross-sectional view of the key structure shown in fig. 4 after being pressed. Fig. 6 is a schematic cross-sectional view along the line BB shown in fig. 2. Fig. 7 is a schematic cross-sectional view of the key structure shown in fig. 5 after being pressed.
As shown in fig. 1, the keyboard apparatus 1 of the present embodiment includes a plurality of key structures 10. The key structures 10 may be categorized into general keys, number keys, function keys, etc., which are respectively touched by a user's finger to enable the keyboard apparatus 1 to generate a switch signal corresponding to the above keys for the computer, so as to enable the computer to execute corresponding functions, for example, the general keys are used for inputting symbols such as english letters, etc., the number keys are used for inputting numbers, and the function keys are used for providing various shortcut functions, for example, F1-F12, etc., or Space or Shift (Shift) keys with larger area and longer length.
The following describes the detailed configuration of the key structure 10 of the keyboard apparatus 1 according to the embodiment of the present invention in more detail.
As shown in fig. 2 to 5, the key structure 10 of the present embodiment includes a key cap 101, a circuit board 102, a key frame 103, a conductive member 104, and an infrared sensor 105. The circuit board 102 is disposed below the key cap 101. The key frame 103 is disposed between the key cap 101 and the circuit board 102, the key cap 101 can move up or down relative to the key frame 103, and the key frame 103 includes an opening 1030. The conducting member 104 is disposed between the key cap 101 and the key frame 103, and the conducting member 104 corresponds to the opening 1030 of the key frame 103. The infrared sensor 105 is disposed on the circuit board 102, and the infrared sensor 105 includes a transmitting portion 1051 and a receiving portion 1052 opposite to each other. A sensing region R is defined between the transmitting portion 1051 and the receiving portion 1052 of the infrared sensor 105.
In this embodiment, when the key cap 101 is pressed by an external force, the key cap 101 drives the conductive member 104 to move into the sensing region R defined between the transmitting portion 1051 and the receiving portion 1052 through the opening 1030 of the key frame 103 in the process of the key cap 101 moving downward in a direction approaching to the key frame 103, so as to trigger the infrared sensor 105 to generate a switch signal. In the present embodiment, the emitting portion 1051 is, for example, an infrared light emitting diode (infrared light emitting diode, IR LED), and the receiving portion 1052 is, for example, a Phototransistor (PT), but the present invention is not limited thereto.
As shown in fig. 2 to 5, the conducting member 104 of the present embodiment includes a sleeve portion 1041 and a triggering portion 1042. The sleeve portion 1041 and the trigger portion 1042 of the conductive member 104 are connected to each other, and the trigger portion 1042 is located between the sleeve portion 1041 and the circuit board 102. In the present embodiment, when the conducting member 104 is driven by the keycap 101 and moves into the sensing region R defined between the transmitting portion 1051 and the receiving portion 1052 through the opening 1030 of the keyframe 103, the triggering portion 1042 of the conducting member 104 is located between the transmitting portion 1051 and the receiving portion 1052, so as to block the infrared rays sent from the transmitting portion 1051 to the receiving portion 1052, and trigger the infrared sensor 105 to generate the switch signal.
As shown in fig. 2 to 5, the key structure 10 of the present embodiment further includes a first elastic element 106. The first elastic element 106 is connected between the key cap 101 and the conducting member 104, and the first elastic element 106 is located in the sleeve portion 1041 of the conducting member 104. Specifically, the key cap 101 has an outer surface 1011 and an inner surface 1012 opposite to each other, and the sleeve portion 1041 of the conductive member 104 has an inner wall surface S1 and a bottom surface S2 adjacent to each other, the inner surface 1012 of the key cap 101 and the bottom surface S2 of the sleeve portion 1041 are opposite to each other, one end of the first elastic element 106 is connected to the inner surface 1012 of the key cap 101, and the opposite end of the first elastic element 106 is connected to the bottom surface S2 of the sleeve portion 1041. In the present embodiment, when the first elastic element 106 is in an uncompressed state (i.e., the key structure 10 is in a state of not being pressed), a gap G is provided between the sleeve portion 1041 of the conducting member 104 and the inner surface 1012 of the key cap 101. When the key cap 101 is pressed by an external force, the conducting member 104 is driven by the key cap 101 and moves into the sensing region R of the infrared sensor 105 through the opening 1030 of the key frame 103, and the triggering portion 1042 of the conducting member 104 contacts the circuit board 102, so that the conducting member 104 moves towards the direction approaching the key cap 101 and the sleeve portion 1041 contacts the inner surface 1012 of the key cap 101, and the first elastic element 106 is compressed during the movement of the conducting member 104 towards the direction approaching the key cap 101. With such a structural design, the triggering stability of the conducting member 104 to trigger the infrared sensor 105 can be increased.
As shown in fig. 2 to 7, the key structure 10 of the present embodiment further includes a connection component 107. The connection unit 107 is disposed between the key cap 101 and the key frame 103, and the key cap 101 is moved up and down relative to the key frame 103 by the connection unit 107. In this embodiment, the key frame 103 and the key cap 101 have connectors (e.g. hooks or pins) respectively, and the connecting component 107 is connected between the key cap 101 and the key frame 103 through the connectors. In the present embodiment, the connection component 107 is, for example, a scissor type connection component, but the invention is not limited thereto.
As shown in fig. 2 to 7, the key structure 10 of the present embodiment further includes a glue layer 108. The adhesive layer 108 is disposed between the key frame 103 and the circuit board 102. The key frame 103 and the circuit board 102 are adhered to each other by the adhesive layer 108. In the present embodiment, the adhesive layer 108 is, for example, a double sided adhesive, but the invention is not limited thereto.
As shown in fig. 2 to 5, the key frame 103 of the present embodiment further includes a hollow boss 1031. The hollow boss 1031 includes a surrounding wall 10311 and a bottom wall 10312. The surrounding wall 10311 of the hollow boss 1031 extends from the bottom wall 10312 in a direction approaching the key cap 101, and the opening 1030 of the key frame 103 is opened to the bottom wall 10312 of the hollow boss 1031.
As shown in fig. 2 to 5, the key structure 10 of the present embodiment further includes a second elastic element 109. The second elastic element 109 is disposed between the key frame 103 and the key cap 101, specifically, the second elastic element 109 is disposed between the bottom wall 10312 of the hollow boss 1031 and the inner surface 1012 of the key cap 101, and the surrounding wall 10311 of the hollow boss 1031 surrounds the second elastic element 109. In this embodiment, when the key cap 101 is pressed by an external force, during the downward movement of the key cap 101 in a direction approaching the key frame 103, the second elastic element 109 is pushed against the moving key cap 101 to be in a compressed state, and when the external force applied to the key cap 101 is released, the second elastic element 109 is not pushed against the key cap 101 to release the compressed state, and the elastic restoring force generated by the release of the compressed state of the second elastic element 109 moves and resets the key cap 101 in a direction away from the key frame 103.
As shown in fig. 2 to 7, the key structure 10 of the present embodiment further includes a first elastic portion B1, a second elastic portion B2, and an interference cylinder B3. The first elastic portion B1 and the second elastic portion B2 are disposed on the key frame 103 and located at one side of the hollow boss 1031, and the first elastic portion B1 and the second elastic portion B2 extend in a direction approaching the key cap 101 and are inclined in a direction approaching each other. The interference cylinder B3 is disposed on the inner surface 1012 of the key cap 101, and the interference cylinder B3 extends from the inner surface 1012 of the key cap 101 toward the key frame 103 and corresponds between the first elastic portion B1 and the second elastic portion B2. In the present embodiment, when the key cap 101 is pressed by an external force, the interference cylinder B3 on the key cap 101 contacts between the first elastic portion B1 and the second elastic portion B2 to interfere with each other during the downward movement of the key cap 101 in a direction approaching the key frame 103. Specifically, the key cap 101 drives the interference cylinder B3 to move in a direction approaching the key frame 103, when the interference cylinder B3 contacts between the first elastic portion B1 and the second elastic portion B2, the interference cylinder B3 expands the first elastic portion B1 and the second elastic portion B2 in a direction away from each other, and as the key cap 101 drives the interference cylinder B3 to continue to move down to the end of the stroke, the interference cylinder B3 is clamped between the first elastic portion B1 and the second elastic portion B2 by the elastic restoring force of the first elastic portion B1 and the second elastic portion B2 (as shown in fig. 7), so as to generate a pressed section sense and a feedback sound.
Referring to fig. 8 to 10, fig. 8 is a schematic perspective view of a key structure according to another embodiment of the invention. Fig. 9 is an exploded schematic view of the key structure shown in fig. 8. Fig. 10 is a schematic cross-sectional view along the line CC shown in fig. 8.
As shown in fig. 8 to 10, the key structure 10a of the present embodiment is similar to the key structure 10 shown in fig. 2 to 7, in that the key structure 10a of the present embodiment interferes with the elastic sheet P on the circuit board 102 through the interference surface 1043 on the conducting element 104a, so as to generate a pressing sense of a segment and feedback sound, that is, the structural design of the interference surface 1043 and the elastic sheet P replaces the structural design of the first elastic portion B1, the second elastic portion B2 and the interference cylinder B3 shown in fig. 2 to 7. In the present embodiment, the spring P is disposed on the circuit board 102, and extends toward the direction approaching the conductive element 104a through the opening 1030 of the key frame 103 a. The interference surface 1043 is located at the sleeve portion 1041 of the conducting element 104a, and the interference surface 1043 faces the circuit board 102 and corresponds to the spring P. When the key cap 101 is pressed by an external force, the conducting element 104a is driven by the key cap 101 to move into the sensing region R of the infrared sensor 105 through the opening 1030 of the key frame 103, and the interference surface 1043 of the conducting element 104a contacts the elastic sheet P to interfere with each other, so as to generate a pressed paragraph sense and feedback sound.
It should be noted that, although the key frame 103a of the present embodiment is slightly different from the key frame 103 shown in fig. 2 to 7 (the key frame 103a further includes a surrounding sidewall 1032), the functions therebetween are practically the same, and the key frame 103 shown in fig. 2 to 7 can be replaced with the key frame 103a shown in fig. 8 to 10.
In summary, in the keyboard device according to the embodiment of the invention, the infrared sensor on the circuit board is triggered by the conducting member connected to the inner surface of the key cap, and the elastic force is increased between the conducting member and the key cap by the first elastic element, so as to increase the triggering stability of the conducting member for triggering the infrared sensor. In addition, in the process that the keycap descends towards the direction close to the keyframe according to the touch of external force, the infrared sensor can be triggered directly through the conducting piece positioned on the keycap, and the pressed section sense and feedback sound can be generated through the interference cylinder positioned on the keycap and the first elastic part and the second elastic part positioned on the keyframe or through the interference surface positioned on the conducting piece and the elastic piece positioned on the circuit board.
However, the above description is only of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but is defined by the appended claims and their description, and all the simple equivalent changes and modifications are intended to fall within the scope of the present invention. Furthermore, not all of the objects, advantages, or features of the present disclosure are required to be achieved by any one embodiment or claim of the present disclosure. Furthermore, the abstract sections and headings are for use only in connection with searching patent documents and are not intended to limit the scope of the claims. Furthermore, references to "first," "second," etc. in this specification or in the claims are only intended to name or distinguish between different embodiments or ranges of the element, and are not intended to limit the upper or lower limit on the number of the element.

Claims (10)

1. A keyboard apparatus comprising:
a plurality of key structures, each key structure comprising:
a key cap;
the circuit board is arranged below the key cap;
the key frame is arranged between the key cap and the circuit board, the key cap can move up and down relative to the key frame, and the key frame comprises an opening;
the conducting piece is arranged between the keycap and the keyframe and corresponds to the opening of the keyframe; and
the infrared sensor is arranged on the circuit board and comprises a transmitting part and a receiving part, and a sensing area is defined between the transmitting part and the receiving part;
in the process of descending movement of the keycap towards the direction close to the keyframe, the keycap drives the conducting piece to move into the sensing area through the opening, and then the infrared sensor is triggered to generate a switch signal.
2. The keyboard device of claim 1, wherein the conducting member comprises a sleeve portion and a triggering portion, the triggering portion is located between the sleeve portion and the circuit board, and the triggering portion of the conducting member is located between the transmitting portion and the receiving portion when the conducting member is driven by the keycap to move into the sensing area through the opening of the keyframe.
3. The keyboard device of claim 2, wherein each key structure further comprises a first elastic element connected between the key cap and the conducting member, wherein the first elastic element is located in the sleeve portion of the conducting member, when the first elastic element is in an uncompressed state, a gap is formed between the sleeve portion of the conducting member and the key cap, and when the conducting member is driven by the key cap to move into the sensing region through the opening of the key frame, the sleeve portion of the conducting member compresses the first elastic element, and the sleeve portion contacts the key cap.
4. The keyboard device of claim 2, wherein each key structure further comprises a spring disposed on the circuit board, the spring extending through the opening of the key frame in a direction toward the conducting member, the conducting member further comprising an interference surface disposed on the sleeve portion and facing the circuit board, the interference surface contacting the spring to interfere with each other during the conducting member is driven by the key cap to move into the sensing region through the opening of the key frame.
5. The keyboard device of claim 1, wherein each key structure further comprises a first elastic portion, a second elastic portion and an interference column, the first elastic portion and the second elastic portion are disposed on the keyframe, the first elastic portion and the second elastic portion extend towards the direction approaching the keycap and incline towards each other at the same time, the interference column is disposed on the keycap, and the interference column extends towards the direction approaching the keyframe and corresponds to between the first elastic portion and the second elastic portion, and during the descending movement of the keycap towards the direction approaching the keyframe, the interference column contacts between the first elastic portion and the second elastic portion to interfere with each other.
6. The keyboard device of claim 1, wherein each key structure further comprises a connecting component, the connecting component is disposed between the keycap and the keyframe, and the keycap is moved up and down relative to the keyframe by the connecting component.
7. The keyboard device of claim 1, wherein each key structure further comprises a glue layer disposed between the key frame and the circuit board, the key frame and the circuit board being adhered to each other by the glue layer.
8. The keyboard device of claim 1, wherein the key frame further comprises a hollow boss, the hollow boss comprises a surrounding wall and a bottom wall, the surrounding wall extends from the bottom wall toward the direction approaching the key cap, and the opening is formed on the bottom wall.
9. The keyboard device of claim 8, wherein each key structure further comprises a second elastic element, the second elastic element is disposed between the bottom wall of the hollow boss and the key cap, and the surrounding wall of the hollow boss surrounds the second elastic element, and during the descending movement of the key cap towards the key frame, the second elastic element is pushed by the moving key cap to be in a compressed state, and when the second elastic element is no longer pushed by the key cap, the elastic restoring force generated by the compressed state of the second elastic element is released, so that the key cap moves away from the key frame and is restored.
10. A key structure, comprising:
a key cap;
the circuit board is arranged below the key cap;
the key frame is arranged between the key cap and the circuit board, the key cap can move up and down relative to the key frame, and the key frame comprises an opening;
the conducting piece is arranged between the keycap and the keyframe and corresponds to the opening of the keyframe; and
the infrared sensor is arranged on the circuit board and comprises a transmitting part and a receiving part, and a sensing area is defined between the transmitting part and the receiving part;
in the process of descending movement of the keycap towards the direction close to the keyframe, the keycap drives the conducting piece to move into the sensing area through the opening, and then the infrared sensor is triggered to generate a switch signal.
CN202210741317.5A 2022-06-27 2022-06-27 Keyboard device and key structure thereof Pending CN117352322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210741317.5A CN117352322A (en) 2022-06-27 2022-06-27 Keyboard device and key structure thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210741317.5A CN117352322A (en) 2022-06-27 2022-06-27 Keyboard device and key structure thereof

Publications (1)

Publication Number Publication Date
CN117352322A true CN117352322A (en) 2024-01-05

Family

ID=89369718

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210741317.5A Pending CN117352322A (en) 2022-06-27 2022-06-27 Keyboard device and key structure thereof

Country Status (1)

Country Link
CN (1) CN117352322A (en)

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