CN114204932A - Keyboard with a keyboard body - Google Patents
Keyboard with a keyboard body Download PDFInfo
- Publication number
- CN114204932A CN114204932A CN202111611329.8A CN202111611329A CN114204932A CN 114204932 A CN114204932 A CN 114204932A CN 202111611329 A CN202111611329 A CN 202111611329A CN 114204932 A CN114204932 A CN 114204932A
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- China
- Prior art keywords
- keyboard
- rotating
- piece
- moving
- circuit board
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- 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
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
- H03K17/972—Switches controlled by moving an element forming part of the switch using a magnetic movable element having a plurality of control members, e.g. keyboard
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- 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
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- 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
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- Push-Button Switches (AREA)
Abstract
The invention relates to the field of keyboards, and provides a keyboard which comprises a base shell, a circuit board and a plurality of keys, wherein the circuit board is fixedly arranged on the base shell; the key comprises a moving part, a rotating part and a magnetic angle sensor, wherein a pressing part of the key is positioned on the moving part, the moving part can move along a first direction relative to the base shell, the rotating part can rotate relative to the base shell, a rotating axis of the rotating part is along a second direction, the first direction is intersected with the second direction, and the moving part is in transmission connection with the rotating part; the rotating member is provided with a permanent magnet, and the magnetic angle sensor is positioned on one side of the rotating member in the radial direction; each rotating part is positioned on the same side of the circuit board along the thickness direction, and each magnetic angle sensor is arranged on the same circuit board. In the scheme, the magnetic angle sensors are arranged in an off-axis manner relative to the corresponding permanent magnets from the viewpoint of simplifying the structure of the keyboard, and the magnetic angle sensors of the keyboard are arranged on the same circuit board, so that the structure of the circuit board and the structure of the keyboard are simplified.
Description
Technical Field
The invention relates to the field of keyboards, in particular to a keyboard.
Background
Some current keyboards adopt the magnetic sensor to detect the action of pressing of button, and the more common scheme is for the button installation permanent magnet, the key cap synchronous motion of permanent magnet and button to adopt hall switch to come the motion of response permanent magnet, can realize the detection of pressing the action to the key cap with non-contact's mode like this, have beneficial technological effects such as waterproof, dustproof, reduction mechanical wear.
The Hall switch has two states of being triggered and not being triggered, and when the keycap is in the bounce state (the keycap is located at the initial position), the Hall switch is in the state of not being triggered, and the keycap is pressed to the permanent magnet to be close to the Hall switch, so that the Hall switch is triggered, and the keycap is detected to be pressed through the Hall switch.
However, when the keyboard is operated quickly, the key cap may be pressed again when the key cap is not fully bounced (not returned to the initial position), and in the process, the hall switch may be always in a triggered state, so that no matter how the key cap is continuously pressed, the pressing action cannot be detected by the hall switch.
In addition, some conventional keyboards employ a linear magnetic sensor to detect the pressing action of the key, for example, chinese patent application publication No. CN108415578A discloses that a linear signal is output by the magnetic sensor, and the detection of the pressing action of the key cap is realized according to the linear signal.
However, the magnetic sensors (hall switches and linear magnetic sensors) in the above schemes detect the pressing action of the key cap by sensing the strength of the magnetic field, on one hand, the detection of the magnetic field strength by the magnetic sensor is easily interfered by external environmental factors such as temperature (commonly called temperature drift), so that the detection results of the magnetic sensors on the magnetic field with the same strength under different temperature environments are inconsistent, the usability of the keyboard under different temperature environments is inconsistent, and the keyboard generates heat during the use process, so that the keyboard also has obvious performance changes during high-strength use of games and the like, especially in the scheme of detecting the pressing action of the key cap by using the hall sensor, because the power consumption of the hall sensor is high, the temperature of the keyboard is easily increased after the keyboard is continuously used for a certain time, and the performance of the keyboard also has large changes during the use, the user's requirements for keyboard performance cannot be met.
On the other hand, the performance consistency of the magnetic field intensity detected by different magnetic sensors is poor due to possible errors of the magnetic field intensity detected by the magnetic sensors, even though the magnetic sensors produced in the same batch have different performance, the detection results of the magnetic sensors on the magnetic field with the same intensity may be inconsistent, so that in a scheme that the keyboard detects the key cap pressing action of each key by detecting the magnetic field intensity through the magnetic sensors, some keys can be detected as the key cap being pressed by the magnetic sensors when the key cap is pressed for a small part of travel, and other keys can be detected as the key cap being pressed by the magnetic sensors after the key cap is pressed for most of travel, so that the user experience is poor; in addition, the magnetic field intensity of the permanent magnet also has an error range, and the magnetic field intensity of the permanent magnet arranged on each key cap is not consistent, so that the inconsistency of the performance of each key on the same keyboard can be further aggravated.
In addition, chinese utility model patent with publication number CN208890780U discloses a novel button with the purpose that detects button degree of depth state, signal linearity are good, and this scheme adopts rotating magnetic field sensor to detect the degree of depth state of pressing of button, promotes signal linearity.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a keyboard which can accurately detect the pressing action of keys, has better consistency of the performance of each key and has a simple structure.
The keyboard provided by the invention comprises a base shell, a circuit board and a plurality of keys, wherein the circuit board is fixedly arranged on the base shell; the key comprises a moving part, a rotating part and a magnetic angle sensor, wherein a pressing part of the key is positioned on the moving part, the moving part can move along a first direction relative to the base shell, the rotating part can rotate relative to the base shell, a rotating axis of the rotating part is along a second direction, the first direction is intersected with the second direction, and the moving part is in transmission connection with the rotating part; the rotating member is provided with a permanent magnet, and the magnetic angle sensor is positioned on one side of the rotating member in the radial direction; each rotating part is positioned on the same side of the circuit board along the thickness direction, and each magnetic angle sensor is arranged on the same circuit board.
From the above, on one hand, the scheme indirectly detects the motion condition of the motion part by detecting the rotation of the permanent magnet through the magnetic angle sensor, and further detects the pressing action of the pressing part, so that the non-contact detection of the pressing action can be realized, and compared with the scheme of detecting the pressing action by sensing the magnetic field intensity through the magnetic sensor in the prior art, the detection performance of the magnetic angle sensor is not easily influenced by environmental factors such as temperature, so that the detection result of the magnetic angle sensor is not easy to change along with the temperature change, the consistency of the detection result of the magnetic angle sensor under different temperature environments is better, therefore, the detection result of the magnetic angle sensor can more accurately reflect the pressing condition of the pressing part, and the detection of whether the pressing part is pressed or not is not easily influenced by the external environmental factors such as temperature, when the pressing part is continuously pressed under the condition that the pressing part is not completely returned, the pressing action can still be detected, the pressing condition of the pressing part can be accurately detected, and the user experience is better; and, because the testing result of magnetism angle sensor is difficult for receiving environmental factor influences such as temperature, and magnetism angle sensor's detection precision is preferred, therefore when adopting the button of a plurality of this scheme to detect same magnetic field, the uniformity of testing result is better, and the performance uniformity of each button of this scheme keyboard is better.
On the other hand, unlike the solution that only needs to detect whether the key is pressed, the CN208890780U solution uses a magnetic angle sensor in the novel key for the purpose of detecting the depth state of the key and good signal linearity; however, the application scenario of the keyboard determines that it only needs to detect whether the key is pressed, that is, the CN208890780U solution gives a counter technical hint to apply the magnetic angle sensor to the keyboard, and the skilled person does not easily think that applying the magnetic angle sensor to the keyboard to detect whether the key is pressed.
This scheme is based on the promotion and presses the detection precision of the condition/promotes the purpose of pressing the uniformity of testing result to the button and is applied to the keyboard with magnetism angle sensor, however, if the simple structure with CN208890780U scheme is applied to the button of keyboard, can have the structure complicacy, press the great problem of the degree of difficulty, specifically: on one hand, the rotating magnetic field sensor of the CN208890780U solution is located on one side of the key perpendicular to the pressing direction, so if the structure of the CN208890780U solution is applied to the key of the keyboard, a circuit board needs to be separately arranged on one side of each key perpendicular to the pressing direction to mount the rotating magnetic field sensor, which results in a complex structure of the keyboard and poor economy; on the other hand, the scheme adopts a gear and rack mode for transmission, and at the moment, if the diameter of the gear is set to be too large, the volume/size of the key is too large, so that the key is not beneficial to being applied to a keyboard; if the diameter of the gear is set to be too small, the driving difficulty of the gear is increased, and the key can be pressed by a larger pressing force at the moment, so that the use of the keyboard is not facilitated.
This scheme adopts the magnetism angle sensor to detect under the condition of pressing the action at the keyboard, considers from the purpose of simplifying the keyboard structure, compares magnetism angle sensor and places corresponding permanent magnet off-axis, can locate the place ahead of pressing the direction along what the button was located like this with magnetism angle sensor for this scheme can locate each magnetism angle sensor on same circuit board, and need not set up the circuit board alone for every button, is favorable to simplifying the structure of circuit board, the structure of simplifying the keyboard.
Preferably, the first direction is perpendicular to the second direction.
It is further preferred that the second direction is perpendicular to the thickness direction of the circuit board.
In a further preferred embodiment, the moving element is in direct transmission connection with the rotating element, the moving element has a rack, the rotating element has a gear, and the gear is in meshing transmission with the rack.
Further, the gear is a sector gear.
Therefore, the force arm of the gear can be increased under the condition that the overall size and weight of the gear are not increased, so that the driving difficulty of the gear is reduced, the pressing operation difficulty of the key is reduced, and the flexibility of the pressing operation of the key is improved; in a similar way, the whole size and weight of the gear can be reduced under the condition that the gear driving difficulty is not increased, the pressing operation difficulty of the keys is not increased, the miniaturization of the keys is facilitated, and the size of the keys is favorably ensured to be suitable for the keyboard to use.
Still preferably, the first direction is along a thickness direction of the circuit board.
Still another preferred scheme is, still include the pretension return member, moving part and rotating member keep in the initial position under the effect of pretension return member; and when the moving element leaves the initial position along the first direction, the acting force of the pre-tightening return element tends to force the moving element to return towards the initial position along the first direction.
It is also preferred that the rotary member has an eccentrically disposed transmission portion, which is connected to the moving member.
The rotating part is matched with the base shell and is provided with a first pre-tightening part, and the pre-tightening force of the first pre-tightening part forces the transmission part to abut against the moving part; and/or the transmission part is provided with a track, and part of the structure of the moving part is limited on the track and can move along the track.
In a further aspect, the first preload member is a torsion spring.
In a further scheme, the movable piece is matched with the base shell and provided with a second pre-tightening piece, and the pre-tightening force of the second pre-tightening piece forces the movable piece to abut against the transmission part.
In a further scheme, the first pre-tightening piece is a pre-tightening return piece, and the moving piece and the rotating piece are kept at initial positions under the action of the pre-tightening return piece; and when the moving element leaves the initial position along the first direction, the acting force of the pre-tightening return element tends to force the moving element to return towards the initial position along the first direction.
The further proposal is that the rotating piece is in a strip shape or a plate shape, and one end of the rotating piece along the length direction is rotatably connected with the base shell.
Drawings
Fig. 1 is a perspective view of a key in a first embodiment of a keyboard of the present invention.
Fig. 2 is a perspective cross-sectional view of a key of a first embodiment of the keyboard of the present invention, the normal to the cross-sectional view being along the X-axis direction.
Fig. 3 is a perspective cross-sectional view of a key of a second embodiment of the keyboard of the present invention, the normal to the cross-sectional plane being along the X' axis.
FIG. 4 is a schematic cross-sectional view of the engagement of the transmission and key axes of an alternative embodiment of the keyboard of the present invention, the normal to the cross-sectional plane being along the Y "axis.
Detailed Description
First embodiment
Fig. 1 and fig. 2 of the present embodiment adopt a unified spatial rectangular coordinate system (right-hand system) to indicate the relative position relationship between the components, wherein the Z-axis direction is vertically upward, the Z-axis direction of the present embodiment is a first direction, and the Y-axis direction of the present embodiment is a second direction.
Referring to fig. 1 and fig. 2, the keyboard of the present embodiment includes an upper casing, a lower casing (not shown in the figures), a circuit board 1000 and a plurality of keys 2000, wherein a normal line of a main surface of the circuit board 1000 is along a Z-axis direction, that is, a thickness direction of the circuit board 1000 is along the Z-axis direction, the upper casing is located on a Z-axis positive side of the lower casing, the upper casing and the lower casing are fixedly connected by using screws, the upper casing and the lower casing form a first mounting cavity, and a combination of the upper casing, the lower casing and the circuit board 1000 may be configured with reference to an existing keyboard, which is not described herein again.
The key 2000 includes a cover 1, a frame 2, a key cap (not shown), a key shaft 3, a rack 4, a gear 5, a permanent magnet 8, a magnetic angle sensor 9, a first helical compression spring 10, and a guide post 11, wherein the cover 1, the frame 2, and the circuit board 1000 are all fixed in a first installation cavity.
The frame body 2 is provided with an opening on the Z-axis positive side, the cover body 1 is positioned on the Z-axis positive side of the frame body 2, the frame body 2 is positioned on the Z-axis positive side of the circuit board 1000, the cover body 1 and the frame body 2 are fixedly connected in a buckling mode, the cover body 1 and the frame body 2 enclose a second installation cavity 2001, the rack 4, the gear 5, the permanent magnet 8, the first spiral pressure spring 10 and the guide column 11 are all installed in the second installation cavity 2001, the cover body 1 is provided with a first through hole penetrating along the Z-axis direction, the key shaft 3 is slidably arranged in the first through hole along the Z-axis direction, the keycap is installed at the Z-axis positive end of the key shaft 3, the keycap upper shell is provided with a second through hole penetrating along the Z-axis direction, the keycap is exposed on the Z-axis positive side of the keyboard through the second through hole, and the Z-axis positive side wall surface of the keycap is the pressing portion of the key 2000.
Alternatively, in other embodiments of the present invention, only the circuit board 1000 and the magnetic angle sensor 9 may be disposed in the first mounting cavity, and both the cover 1 and the frame 2 are fixedly disposed on the Z-axis positive side of the upper housing, so that the first mounting cavity can be set as a sealed cavity, which is beneficial to achieve the waterproof and dustproof purposes of the keyboard.
Specifically, the permanent magnet 8 of the present embodiment is an annular magnet, and the Y-axis positive end of the main structure of the gear 5 has an annular groove in which the permanent magnet 8 is embedded.
The sectional profile dimension of the normal line of the rack 4 along the Z-axis direction is greater than the sectional profile dimension of the first through hole, the guide post 11 is fixed on the inner bottom wall (Z-axis positive side wall) of the frame 2 and overhangs in the second mounting cavity 2001 from the inner bottom wall of the frame 2 along the Z-axis positive direction, the Z-axis negative end of the rack 4 is provided with a guide hole extending along the Z-axis direction, the guide post 11 extends in the guide hole, the first helical compression spring 10 is sleeved on the guide post 11, the first helical compression spring 10 is extruded between the rack 4 and the frame 2 along the Z-axis direction, and under the extrusion action of the first helical compression spring 10, the rack 4 abuts against the Z-axis negative side of the cover 1.
The upper case, the lower case, the cover body 1 and the frame body 2 of the present embodiment constitute a base case of the present invention, the key top, the key shaft 3 and the rack 4 of the present embodiment constitute a moving member of the present invention, and the gear 5 and the permanent magnet 8 of the present embodiment constitute a rotating member of the present invention.
When the rack 4 abuts against the Z-axis negative side wall of the cover body 1, the moving part is at an initial position, when a user presses the keycap along the Z-axis negative direction, the pressing force overcomes the elastic force of the first spiral pressure spring 10, so that the keycap, the key shaft 3 and the rack 4 synchronously move towards the Z-axis negative direction from the initial position, further, through the meshing transmission of the rack 4 and the gear 5, the permanent magnet 8 rotates around an axis parallel to the Y-axis direction, the rotation condition of the permanent magnet 8 can correspond to the pressing condition of the keycap, and therefore the pressed condition of the keycap can be reflected by detecting the rotation condition of the permanent magnet 8; after the user releases the pressing force on the keycap, the key shaft 3 returns along the positive direction of the Z axis under the action of the first helical compression spring 10 until the moving piece returns to the initial position, and the rack 4 abuts against the negative direction side of the Z axis of the cover body 1.
The magnetic angle sensor 9 of this embodiment is configured to detect a rotation angle and a direction of the permanent magnet 8, and when the magnetic angle sensor 9 detects that the permanent magnet 8 continuously rotates in a preset rotation direction (for example, in a clockwise direction when looking at the permanent magnet 8 along a negative direction of a Y axis) beyond a preset angle, the keyboard of this embodiment confirms that the corresponding key cap is pressed once, and the preset angle may be specifically selected according to a sensitivity requirement for detection of a pressing action, which is not described herein again; alternatively, in other embodiments of the present invention, it is also possible to confirm that the key cap is pressed when the magnetic angle sensor 9 detects that the permanent magnet 8 rotates to a preset position/angle along the preset rotation direction, where the preset position/angle may be, for example, the position/angle of the permanent magnet 8 when the corresponding key shaft 3 is located at the Z-axis negative end of the sliding stroke.
Specifically, the magnetic angle sensor 9 may be, for example, a magnetic angle sensor shown in fig. 2/4 in the invention patent application with publication number CN106405454A, and the magnetic angle sensor 9 is also commonly referred to as a magnetic encoder, a magnetic encoder chip, a magnetic encoding chip.
The magnetic angle sensor 9 of the present embodiment detects the rotation of the permanent magnet 8, and the detection result of the magnetic angle sensor 9 reflects the relative ratio of the magnetic field strength in each direction, specifically, the magnetic angle sensor 9 determines the rotation of the permanent magnet 8 according to the direction of the detected magnetic field, and the magnetic field direction is expressed as the proportional relationship of the magnetic field strength in at least two directions perpendicular to each other, for example, when the magnetic angle sensor detects the magnetic field component on the XOY plane, the magnetic field direction can be expressed as the proportional relationship of the magnetic field component in the X-axis direction and the magnetic field component in the Y-axis direction; therefore, although environmental factors such as temperature easily affect the detection accuracy of the magnetic sensor on the magnetic field intensity, the detection result of the magnetic angle sensor 9 is not easily affected, that is, the detection result of the magnetic angle sensor 9 is not easily affected by environmental factors such as temperature, the detection result of the magnetic angle sensor 9 in different temperature environments has good consistency, the detection error of the magnetic angle sensor 9 is small, the performance of the key 2000 of the embodiment is not easily fluctuated due to the change of the environmental factors such as temperature, the performance consistency of the key 2000 in different temperature environments is good, and the performance consistency of each key 2000 of the same keyboard can be good, which is beneficial to improving the user experience.
Moreover, when the keyboard of the embodiment is applied to continuous and quick pressing situations such as games, even if the keycap is pressed again under the condition that the keycap is not completely returned, the pressing action can also cause the permanent magnet 8 to rotate in the counterclockwise direction, and then the permanent magnet can be detected by the magnetic angle sensor 9, so that the user experience can be improved.
In addition, the magnetic angle sensor 9 of this embodiment is placed in comparison with the permanent magnet 8 off-axis that corresponds (the magnetic angle sensor 9 is located the radial one side of rotation that corresponds the rotating member), not only can adopt the rotation that the magnetic angle sensor 9 detected the permanent magnet 8 like this, and then detect the ascending motion of key shaft 3 in the Z axle direction, realize the detection to the key cap action of pressing, and can locate each magnetic angle sensor 9 of keyboard on same circuit board 1000, be favorable to simplifying the structure of this embodiment circuit board 1000, simplify the structure of this embodiment keyboard.
Specifically, the magnetic angle sensor 9 is a tunneling magnetoresistance effect sensor (TMR) having a tunneling magnetoresistance sensing element, and the tunneling magnetoresistance effect sensor has a characteristic of low power consumption, so that the keyboard is not prone to generate excessive heat even after being continuously used for a long time, and the keyboard does not cause an excessive temperature rise; of course, the magnetic angle sensor 9 may also have an anisotropic magnetoresistive sensing element.
The first helical compression spring 10 of the present embodiment constitutes the pre-tightening return member of the present invention, alternatively, in other embodiments of the present invention, the pre-tightening return member may also adopt a pneumatic cylinder or a repulsive magnet set, and the magnet set may be arranged in a manner of, for example, referring to the combined arrangement of the first magnetic source and the second magnetic source of the invention patent application with the publication number CN108415578A, and of course, the pre-tightening return member may also adopt a torsion spring arranged between the gear 5 and the base shell.
Since a large number of keys 2000 are required to be arranged on the keyboard, the installation space of each key 2000 is small, which requires that the volume/size of each key 2000 can be small enough; however, if the diameter of the gear 5 is set too small, the force arm of the gear 5 is reduced, the difficulty in driving the gear is increased, and the key can be pressed by a larger pressing force, which is not favorable for the keyboard; if the diameter of the gear 5 is set to be too large, the volume/size of the key can be increased, and the application to the keyboard is still not facilitated; and, because the stroke of pressing of button 2000 is shorter, and magnetic angle sensor 9 is higher to the detection precision of angle, therefore preferentially establish gear 5 as sector gear, under the limited circumstances of installation space, can suitably increase the radius of gear 5 like this, compare in the whole round gear of the same volume and can increase the arm of force of gear 5, compare in the whole round gear of the same radius and can reduce the whole size and the weight of gear 5, be favorable to reducing the drive degree of difficulty of gear 5, reduce the degree of difficulty of pressing of button 2000, promote the press motion flexibility of button 2000, be favorable to making the button 2000 of this embodiment be suitable for the keyboard and use.
The thickness direction of the circuit board 1000 and the moving direction of the moving element are both along the first direction, and the first direction of the embodiment is perpendicular to the second direction, alternatively, in other embodiments of the present invention, the first direction and the second direction may be intersected, for example, an included angle between the first direction and the second direction is 80 °, and similarly, the thickness direction of the circuit board 1000 may also not be perpendicular to the moving direction of the moving element, for example, an included angle between the thickness direction of the circuit board 1000 and the moving direction of the moving element is 80 °/60 °, and the like.
Second embodiment
Fig. 3 of the present embodiment adopts a spatial rectangular coordinate system (right-hand system) to represent the relative positional relationship between the components, wherein the Z' axis is vertically upward.
Referring to fig. 3, the main structure of the keyboard of this embodiment is the same as the first embodiment, except for the transmission manner from the key shaft 3 ' of the key 2000 ' to the corresponding permanent magnet 8 '.
The rotating member of the embodiment includes a cam 6 'and a permanent magnet 8', the cam 6 'is rotatably connected with the frame 2', the rotation axis of the cam 6 'is along the X' axis direction, the permanent magnet 8 'is annular, the permanent magnet 8' is embedded in an annular groove at the positive end of the X 'axis of the cam 6', the center line of the permanent magnet 8 'is coincident with the rotation axis, the magnetic angle sensor 9' is located at the negative side of the Z 'axis of the permanent magnet 8', that is, the magnetic angle sensor 9 'is located off-axis relative to the permanent magnet 8', each key 2000 'is located at the positive side of the Z' axis of the circuit board 1000 ', and the magnetic angle sensors 9' of each key 2000 'share the same circuit board 1000'.
The Z ' axis negative end of the key shaft 3 ' has an abutting portion 31 ', the key shaft 3 ' is sleeved with a second helical compression spring 12 ' (an example of a second preload member), the second helical compression spring 12 ' is located in a second mounting cavity 2001 ' enclosed by the frame body 2 ' and the cover body 1 ', the Z ' axis positive end of the second helical compression spring 12 ' abuts against the Z ' axis negative side wall of the cover body 1 ', and the Z ' axis negative end of the second helical compression spring 12 ' abuts against the Z ' axis positive side wall of the abutting portion 31 '.
A torsion spring 7 ' (an example of a first preload member) is provided in cooperation between the cam 6 ' and the frame 2 ', the cam 6 ' has a transmission portion 61 ' and a stopper portion 62 ' which are eccentrically provided, the transmission portion 61 ' and the stopper portion 62 ' are distributed along the rotation circumferential direction of the cam 6 ', the transmission portion 61 ' is located on the Y-axis positive side of the cam 6 ', the stopper portion 62 ' is located on the Y-axis negative side of the cam 6 ', and a Z ' -axis positive side wall of the transmission portion 61 ' abuts against a Z ' -axis negative side wall of the abutment portion 31 ' under the action of a preload of the torsion spring 7 ' and an elastic force of the second helical compression spring 12 '.
The frame body 2 ' is provided with a boss 21 ', the boss 21 ' is positioned on the negative side of the Z ' axis of the limiting part 62 ', and the negative side wall of the Z ' axis of the limiting part 62 ' is abutted against the boss 21 ' under the action of the pretightening force of the torsion spring 7 '.
When the limiting part 62 'abuts against the boss 21', the moving part and the rotating part are both in initial positions, at this time, a user presses the key cap in the negative direction of the Z 'axis, the pressing force and the elastic force of the second helical compression spring 12' overcome the pre-tightening force of the torsion spring 7 ', the key cap, the key axis 3' and the abutting part 31 'synchronously move in the negative direction of the Z' axis, and the abutting part 31 'is matched with the transmission part 61' to enable the cam 6 'to rotate, so that the permanent magnet 8' rotates around an axis parallel to the X 'axis direction (clockwise when looking at the cam 6' along the X 'axis), the rotation condition of the permanent magnet 8' can correspond to the pressing condition of the key cap, and therefore, the rotation condition of the permanent magnet 8 'can be detected by the magnetic angle sensor 9' to reflect the pressed condition of the negative key cap.
After the user cancels the pressing force on the keycap, the elasticity of the second spiral compression spring 12 'is overcome under the action of the pretightening force of the torsion spring 7', the keycap and the key shaft 3 'return to the Z' axis in the positive direction, and the permanent magnet 8 'and the cam 6' rotate in the reverse direction to return (in the counterclockwise direction when looking at the cam 6 'along the X' axis in the negative direction) until the limiting part 62 'abuts against the boss 21'.
The torsion spring 7' of the present embodiment constitutes both the first preload member and the preload return member of the present invention.
Alternatively, in another embodiment of the present invention, the boss 21 ', the limiting portion 62' and the second helical compression spring 12 'of this embodiment may also be eliminated, the cross-sectional dimension of the normal line of the abutting portion 31' along the Z 'axis direction is greater than the cross-sectional dimension of the first through hole, when the key 2000' is in the initial state, under the pre-tightening force of the torsion spring 7 ', the Z' axis positive sidewall of the transmission portion 61 'abuts against the Z' axis negative sidewall of the abutting portion 31 ', and the Z' axis positive sidewall of the abutting portion 31 'abuts against the Z' axis negative sidewall of the cover 1 ', which is beneficial to making the structure of the key 2000' simpler, reducing the structural dimension of the key 2000 'and miniaturizing the key 2000'.
Further, in order to reduce the volume/size of the key 2000 ', reduce the pressing difficulty of the key 2000', and improve the movement flexibility of the key 2000 ', in another embodiment of the present invention, it is preferable to configure the main structure of the rotating member as a plate-shaped body/strip-shaped body, one end of the plate-shaped body/strip-shaped body in the length direction is rotatably connected to the frame 2', and the other end of the plate-shaped body/strip-shaped body in the length direction extends to the negative side of the Z 'axis of the abutting portion 31' and abuts against the abutting portion 31 ', so that the size from the transmission portion 61' to the rotation axis can be increased, the pressing difficulty of the key 2000 'can be reduced, and the movement flexibility of the key 2000' can be improved without increasing the overall weight and volume/size of the rotating member.
Alternatively, in another embodiment of the present invention, referring to fig. 4, the transmission part 61 'has a track, for example, a strip groove 611' opened on the positive side wall of the Z 'axis of the transmission part 61', the extending direction of the strip groove 611 'is perpendicular to the X' axis direction, the cross-sectional shape of the strip groove 611 'is an inverted "T", the dimension of the opening of the strip groove 611' in the X 'axis direction is smaller than the dimension of the groove cavity in the X' axis direction, the negative Z 'axis end of the key axis 3' has a slider 32 ', the slider 32' is cylindrical, the center line of the slider 32 'is along the X' axis direction, both ends of the slider 32 'in the X' axis direction are respectively protruded on both sides of the key axis 3 'in the X' axis direction, the slider 32 'is confined in the groove cavity of the strip groove 611', the key axis 3 'passes through the opening of the strip groove 611', the slider 32 ' can slide along the strip groove 611 ' relative to the contact portion 31 '; thus, the connection between the key shaft 3 'and the transmission part 61' is not separated from each other, which is beneficial to ensure the stable connection between the key shaft 3 'and the transmission part 61' and ensure the connection between the key shaft 3 'and the transmission part 61' without specially arranging a preload.
Alternatively, in other embodiments of the invention, the profile of the cam 6' may also be configured as described in the prior art, and will not be described in detail here.
The rest of this embodiment is the same as the first embodiment.
Finally, it should be emphasized that the above-described preferred embodiments of the present invention are merely examples of implementations, rather than limitations, and that many variations and modifications of the invention are possible to those skilled in the art, without departing from the spirit and scope of the invention.
Claims (10)
1. The keyboard comprises a base shell, a circuit board and a plurality of keys, wherein the circuit board is fixedly arranged on the base shell;
the method is characterized in that:
the key comprises a moving part, a rotating part and a magnetic angle sensor, wherein a pressing part of the key is positioned on the moving part, the moving part can move along a first direction relative to the base shell, the rotating part can rotate relative to the base shell, a rotating axis of the rotating part is along a second direction, the first direction is intersected with the second direction, and the moving part is in transmission connection with the rotating part;
the rotating member has a permanent magnet, and the magnetic angle sensor is located on one side of the rotating member in the radial direction;
each rotating piece is located on the same side of the circuit board in the thickness direction, and each magnetic angle sensor is arranged on the same circuit board.
2. The keyboard of claim 1, wherein:
the first direction is perpendicular to the second direction;
the second direction is perpendicular to a thickness direction of the circuit board.
3. The keyboard of claim 1, wherein:
the moving part is directly connected with the rotating part in a transmission manner, the moving part is provided with a rack, the rotating part is provided with a gear, and the gear is in meshed transmission with the rack.
4. The keyboard of claim 3, wherein:
the gear is a sector gear;
the first direction is along a thickness direction of the circuit board.
5. The keyboard of any one of claims 1 to 4, wherein:
the moving part and the rotating part are kept at initial positions under the action of the pre-tightening return part; and when the moving element leaves the initial position along the first direction, the acting force of the pre-tightening return element tends to force the moving element to return towards the initial position along the first direction.
6. The keyboard according to claim 1 or 2, wherein:
the rotating part is provided with a transmission part which is eccentrically arranged, and the transmission part is connected with the moving part.
7. The keyboard of claim 6, wherein:
the rotating piece is matched with the base shell and provided with a first pre-tightening piece, and the pre-tightening force of the first pre-tightening piece forces the transmission part to abut against the moving piece;
and/or the transmission part has a track, and part of the structure of the moving part is limited on the track and can move along the track.
8. The keyboard of claim 7, wherein:
the first preload piece is a torsion spring;
the matching of the moving piece and the base shell is provided with a second pre-tightening piece, and the pre-tightening force of the second pre-tightening piece forces the moving piece to abut against the transmission part.
9. The keyboard of claim 7, wherein:
the first pre-tightening piece is a pre-tightening return piece, and the moving piece and the rotating piece are kept at initial positions under the action of the pre-tightening return piece; and when the moving element leaves the initial position along the first direction, the acting force of the pre-tightening return element tends to force the moving element to return towards the initial position along the first direction.
10. The keyboard of claim 6, wherein:
the rotating piece is strip-shaped or plate-shaped, and one end of the rotating piece along the length direction is rotatably connected with the base shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611329.8A CN114204932A (en) | 2021-12-27 | 2021-12-27 | Keyboard with a keyboard body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111611329.8A CN114204932A (en) | 2021-12-27 | 2021-12-27 | Keyboard with a keyboard body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114204932A true CN114204932A (en) | 2022-03-18 |
Family
ID=80656660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111611329.8A Pending CN114204932A (en) | 2021-12-27 | 2021-12-27 | Keyboard with a keyboard body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114204932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114946839A (en) * | 2022-08-01 | 2022-08-30 | 太平洋康泰科学仪器（济南）有限公司 | Liquid nitrogen container convenient to access |
-
2021
- 2021-12-27 CN CN202111611329.8A patent/CN114204932A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114946839A (en) * | 2022-08-01 | 2022-08-30 | 太平洋康泰科学仪器（济南）有限公司 | Liquid nitrogen container convenient to access |
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