CN210378843U

CN210378843U - Electromagnetic induction type mechanical keyboard capable of freely adjusting stroke

Info

Publication number: CN210378843U
Application number: CN201921010051.7U
Authority: CN
Inventors: 黄继飞
Original assignee: Shenzhen Doking Electronic Technology Co Ltd
Current assignee: Shenzhen Doking Electronic Technology Co Ltd
Priority date: 2019-07-01
Filing date: 2019-07-01
Publication date: 2020-04-21
Anticipated expiration: 2029-07-01

Abstract

The utility model relates to an electromagnetic induction type mechanical keyboard capable of freely adjusting stroke, which comprises a keyboard body provided with a mechanical switch, wherein the mechanical switch comprises a switch upper cover, a switch lower cover and a key shaft which are clamped with each other to form a holding cavity; the holding cavity is internally provided with a support frame, a compression spring sleeved on the key shaft, an electromagnet, a fixed contact piece and a movable contact piece which are electrically connected with a circuit board in the keyboard body, the upper part of the key shaft penetrates out of a first through hole arranged at the top of the upper cover of the switch and is fixedly connected with a keycap at the top of the key shaft, an extension arm extends from the side wall of the key shaft, the key shaft moves downwards to press against the movable contact piece to enable the movable contact piece to be electrically connected with the fixed contact piece, and a permanent magnet which can be attracted with the electromagnet and is not in contact with the extension arm is fixed on. The utility model discloses an utilize the size that changes the electric current to change electro-magnet magnetic force size to change and the stroke that the suction between the permanent magnet changed the button, convenience of customers independently adjusts the stroke of pressing, satisfies different demands.

Description

Electromagnetic induction type mechanical keyboard capable of freely adjusting stroke

Technical Field

The utility model relates to a mechanical keyboard, especially an electromagnetic induction formula mechanical keyboard that can freely adjust stroke.

Background

With the rapid development of computer technology, computers are applied to various industries, computer keyboards are common equipment when computers are used, but the key strokes of the existing keyboards are fixed, one keyboard only has one stroke and cannot change the stroke, users can generate various discomfort when the users use the keyboard strokes which are not suitable for the users for a long time, and the keyboard with longer stroke can lead people to feel elastic and heavy but is more laborious and can cause the problem of finger sourness; the keyboard with a moderate stroke is soft and comfortable, and the keyboard with a short stroke is tired after being used for a long time. Meanwhile, different strokes have different reaction times for operation, and long strokes are slow in reaction and short in reaction.

SUMMERY OF THE UTILITY MODEL

To present not enough, the utility model provides a but electromagnetic induction formula mechanical keyboard of free regulating stroke.

The utility model provides a technical scheme that its technical problem adopted is:

an electromagnetic induction type mechanical keyboard capable of freely adjusting stroke comprises a keyboard body provided with a mechanical switch, wherein the mechanical switch comprises a switch upper cover, a key shaft and a switch lower cover, the switch upper cover and the switch lower cover are clamped to form an accommodating cavity, and the key shaft moves up and down in the accommodating cavity; the holding cavity is internally provided with a supporting frame, a compression spring which is positioned between the supporting frame and the upper switch cover and is sleeved on the key shaft, an electromagnet, a fixed contact piece and a movable contact piece which are fixedly connected on the lower switch cover and are electrically connected with a circuit board in the keyboard body, the movable contact pieces are arranged above the fixed contact pieces at intervals and are correspondingly arranged below the key shaft, the upper part of the key shaft penetrates out of the first through hole arranged at the top of the switch upper cover, the top of the key shaft is fixedly connected with a key cap which is arranged at intervals with the top of the switch upper cover, the key shaft radially and outwards extends on the side wall which is positioned below the first through hole to form an extension arm for preventing the key shaft from being pulled out of the accommodating cavity, the lower part of the key shaft penetrates through the support frame and is pressed against the movable contact piece by the lower end of the key shaft when the key shaft moves downwards so as to enable the movable contact piece to elastically deform downwards and contact with the fixed contact piece for electrical conduction, and the extension arm is fixedly provided with a permanent magnet which can attract the electromagnet and is not in contact with the electromagnet.

Preferably, be equipped with the USB connecting wire that has the USB interface and the Type-C power supply line of being connected with the power on the keyboard body, be equipped with main control chip and the OCP control chip who is used for control current with Type-C power supply line electric connection on the circuit board in the keyboard body.

Preferably, the electromagnet comprises an electromagnet upper cover and an electromagnet lower cover which are connected with each other and form an installation space, an iron core arranged in the installation space and a coil sleeved on the iron core, the coil is connected with a pin and is electrically connected with a circuit board in the keyboard body through the pin, and the pin is arranged on the electromagnet lower cover and penetrates out of the switch lower cover to be electrically connected with the circuit board in the keyboard body.

Preferably, the support frame is provided with a second through hole through which the key shaft passes and is fixedly connected to the switch lower cover through a support leg at the bottom of the second through hole.

Preferably, the support frame is a support plate with a first groove in the bottom surface, the second through holes are formed in the bottom surface of the first groove, and the number of the support legs is four and is correspondingly arranged at four corners of the support plate.

Preferably, the top of the extension arm is provided with a second groove, and the permanent magnet is installed in the second groove.

Preferably, the support frame is arranged in the middle of the accommodating cavity, and the electromagnet is arranged adjacent to the support frame.

Preferably, two electromagnets are symmetrically arranged on two sides of the support frame, and two permanent magnets are correspondingly arranged.

The beneficial effects of the utility model reside in that: the utility model discloses a set up the electro-magnet in mechanical switch, the permanent magnet of inhaling mutually with the electro-magnet, the electro-magnet can be according to the size through the electric current of its coil and produce the not magnetic attraction of equidimension, the magnetic attraction is different will attract the permanent magnet to drive the key shaft and produce the not displacement of equidimension, be fixed with the key cap on the key shaft again, the magnetic attraction is little, key shaft upward movement drives the also upward movement of key cap, the button stroke increase, the magnetic attraction is big, key shaft downward movement drives the also downward movement of key cap, the button stroke reduces, just so can come the regulation of freedom according to the demand of self to the stroke of keyboard switch through the size that changes through the electro-magnet coil electric current, just can experience the button of multiple.

Drawings

Fig. 1 is a schematic cross-sectional structural view of a mechanical switch according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a mechanical switch according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of an electromagnet according to an embodiment of the present invention;

fig. 4 is an exploded view of an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of the present invention;

part names and serial numbers in the figure: 1-keyboard body 10-circuit board 11-USB connecting wire 12-Type-c power supply line 13-main control chip 14-OCP control chip 2-mechanical switch 20-switch upper cover 21-key shaft 22-switch lower cover 23-key cap 200-first through hole 210-extension arm 2100-second groove 3-holding cavity 4-support frame 40-second through hole 41-support foot 42-first groove 5-compression spring 6-electromagnet 60-electromagnet upper cover 61-iron core 62-coil 63-pin 64-electromagnet lower cover 7-fixed contact 8-movable contact 9-permanent magnet.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and examples, which are for clear and complete description. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention. In addition, directional terms used in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer to directions only as shown in the attached drawings, and are used for better and clearer explanation and understanding of the present invention, and do not indicate or imply orientation which the present invention must have, and thus, should not be construed as limiting the present invention.

The embodiment of the present invention is shown in fig. 1 to 5, an electromagnetic induction type mechanical keyboard capable of freely adjusting a stroke, including a keyboard body 1 mounted with a mechanical switch 2, the keyboard body 1 is sequentially provided with an upper cover, a mechanical switch 2, a circuit board 10, an iron plate, a lower cover and the like from top to bottom as a conventional mechanical keyboard, the mechanical switch 2 includes a switch upper cover 20, a key shaft 21 and a switch lower cover 22, the switch upper cover 20 and the switch lower cover 22 are engaged with each other to form an accommodating cavity 3, and the key shaft 21 can move up and down in the accommodating cavity 3 when pressed; the accommodating cavity 3 is provided with a support frame 4, a compression spring 5 which is arranged between the support frame 4 and a switch upper cover 20 and is sleeved on a key shaft 21, an electromagnet 6 which is fixedly connected on a switch lower cover 22 and is electrically connected with a circuit board 10 in a keyboard body 1, a fixed contact piece 7 and a movable contact piece 8, namely, in the accommodating cavity 3, the electromagnet 6, the fixed contact piece 7 and the movable contact piece 8 are all fixed on the switch lower cover 22 and are simultaneously electrically connected with the circuit board 10 in the keyboard body 1, the support frame 4 can be fixedly arranged on the switch upper cover 20 or the switch lower cover 22 according to different conditions, the compression spring 5 is arranged between the switch upper cover 20 and the support frame 4 and is sleeved on the key shaft 21, two ends of the compression spring 5 correspondingly abut against the switch upper cover 20 and the support frame 4, has a supporting function on the key shaft 21, and the compression spring 5 is compressed when the key shaft 21 is pressed downwards, the downward pressure applied on the key shaft 21 is cancelled, the compression spring 5 restores the original state and rebounds the key shaft 21 upwards under the action of elastic force, the movable contact piece 8 is arranged above the fixed contact piece 7 at an interval and is correspondingly positioned below the key shaft 21, so that the key shaft 21, the movable contact piece 8 and the fixed contact piece 7 are sequentially arranged from top to bottom, the key shaft 21 is not in contact with the movable contact piece 8 when not pressed downwards and has a certain distance, the distance is also the stroke of the key, meanwhile, the movable contact piece 8 is arranged above the fixed contact piece 7 at an interval and is not in contact with the fixed contact piece 7 when not pressed, the movable contact piece 8 and the fixed contact piece 7 are not in electrical conduction, the movable contact piece 8 is elastically deformed to be in electrical conduction with the fixed contact piece 7 after being pressed downwards, the upper part of the key shaft 21 penetrates out of a first through hole 200 arranged at the top of the upper cover 20 of the switch, the top of the key shaft 21 is fixedly connected with a keycap 23 arranged at an interval and at the top of the upper cover 20 of the switch, the key cap 23 is fixedly connected with the key shaft 21, the key cap 23 can move along with the movement of the key shaft 21, the key shaft 21 does up-and-down movement, which means that the caliber of the first through hole 200 is larger than the caliber of the part of the key shaft 21 penetrating through the first through hole 200, so that the movement of the key shaft 21 is not influenced, the key shaft 21 radially and outwardly extends on the side wall positioned below the first through hole 200 to form an extension arm 210 for preventing the key shaft 21 from being pulled out of the accommodating cavity 3, the lower part of the key shaft 21 penetrates through the support frame 4 and the lower end of the key shaft 21 is pressed against the movable contact piece 8 to enable the movable contact piece 8 to be in downward elastic deformation to be in contact with the fixed contact piece 7 for electrical conduction, so that the smoothness of the up-and-down movement of the key shaft 21 can be maintained, the movable contact piece 8 is in contact with the fixed contact piece 7 through the elastic deformation under pressure, and the movable contact piece 8 is restored to, in order to prevent the support frame 4 from affecting the downward movement of the key shaft 21, the support frame 4 is provided with a second through hole 40 through which the key shaft 21 passes and is fixedly connected to the switch lower cover 22 through a support leg 41 at the bottom of the second through hole 40, so that the key shaft 21 is positioned in the second through hole 40, the structure of the support frame 4 can be simplified, meanwhile, the support leg 41 is fixed on the switch lower cover 22 to prevent the loosening in use, the support frame 4 is a support plate with a first groove 42 at the bottom surface, the second through hole 40 is arranged at the bottom surface of the first groove 42, the support legs 41 are provided with four parts and are correspondingly arranged at four corners of the support plate, the support frame 4 is arranged at the middle part of the accommodating cavity 3, the electromagnet 6 is arranged adjacent to the support frame 4, the structure is simple and stable in connection, and the arrangement of each part in the accommodating cavity 3 and the, the permanent magnet 9 which can attract the electromagnet 6 and is not in contact with the electromagnet is fixedly installed on the extension arm 210, the permanent magnet 9 is fixedly installed on the extension arm 210 and cannot fall off in use, the permanent magnet 9 can move synchronously with the key shaft 21, for the electromagnet 6 which attracts the permanent magnet 9 but is not in contact with the permanent magnet, the relative distance between the permanent magnet 9 and the key shaft 21 is ensured without contact, the situation that the electromagnet cannot be pressed is avoided, the electromagnet 6 can generate magnetic attraction forces with different sizes according to the size of current passing through the coil 62 of the electromagnet, the magnetic attraction forces can attract the permanent magnet 9 to drive the key shaft 21 to generate displacements with different sizes, the key cap 23 is fixed on the key shaft 21, the magnetic attraction force is small, the key shaft 21 moves upwards to drive the key cap 23 to move upwards, the key stroke is increased, the magnetic attraction force is large, the key shaft 21 moves downwards to drive the key cap 23 to move, the stroke of the key can be freely adjusted according to the requirement of the key by changing the current of the coil 62 of the electromagnet 6. When the combined key Ctrl + Up is pressed Down, the circuit on the circuit board 10 in the keyboard body 1 receives the user input information and executes the reduction of the current of the circuit on the circuit board 10, the current led into the coil 62 of the electromagnet 6 is reduced, thereby reducing the attraction of the electromagnet 6, the distance between the electromagnet 6 and the permanent magnet 9 is increased, thereby the key shaft 21 is pushed upwards by the compression spring 5, the keycap 23 moves upwards, the key stroke is increased, on the contrary, when the combined key Ctrl + Down is pressed Down, the circuit on the circuit board 10 in the keyboard body 1 receives the user input information and executes the increase of the circuit current on the circuit board 10, the current on the coil 62 of the electromagnet 6 is increased, thereby the attraction of the electromagnet 6 is increased, the distance between the electromagnet 6 and the permanent magnet 9 is reduced, thereby the key shaft 21 moves downwards, the key cap 23 moves downward, and the key stroke becomes smaller.

In a further improvement, as shown in fig. 4 and 5, the keyboard body 1 is provided with a USB connection line 11 having a USB interface and a Type-C power supply line 12 connected to a power supply, the USB connection line 11 is used for connecting to a computer host, the Type-C power supply line 12 is used for connecting to the power supply, and under the condition that the normal use of the keyboard is not affected, the adjustment of the current level of the coil 62 of the electromagnet 6 is facilitated, so as to adjust the key stroke and avoid the influence of the current adjustment on the keyboard function, the circuit board 10 in the keyboard body 1 is provided with a main control chip 13 and an OCP control chip 14 electrically connected to the Type-C power supply line 12 for controlling the current, the main control chip 13 is used for receiving and processing the information input by the user, and further controlling and adjusting the current, the OCP control chip 14 ensures the stability of the current flowing through the circuit board 10 in the keyboard body 1, the current on the coil 62 of the electromagnet 6 is ensured to be stable, and the key stroke cannot be changed randomly in use.

In a further improvement, as shown in fig. 3, the electromagnet 6 includes an electromagnet upper cover 60 and an electromagnet lower cover 64 which are connected to each other and form an installation space, an iron core 61 disposed in the installation space, and a coil 62 sleeved on the iron core 61, the coil 62 is connected to pins 63 and is electrically connected to the circuit board 10 in the keyboard body 1 through the pins 63, and the pins 63 are installed on the electromagnet lower cover 64 and penetrate out of the switch lower cover 22 to be electrically connected to the circuit board 10 in the keyboard body 1, so as to facilitate connection, installation and maintenance of the electromagnet 6.

In a further improvement, as shown in fig. 1 and 2, the top of the extension arm 210 is provided with a second groove 2100, and the permanent magnet 9 is installed in the second groove 2100, so that the permanent magnet 9 does not protrude out of the extension arm 210 and is positioned on the same plane with the extension arm 210, and the pressing of the key is not affected. The two electromagnets 6 are symmetrically arranged on two sides of the support frame 4, and the two permanent magnets 6 are correspondingly arranged, so that the uniform stress on two sides of the key shaft 21 is ensured, and the smoothness of the downward movement of the key shaft 21 is ensured.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. The utility model provides an electromagnetic induction formula mechanical keyboard that can freely adjust stroke which characterized in that: the keyboard comprises a keyboard body provided with a mechanical switch, wherein the mechanical switch comprises a switch upper cover, a key shaft and a switch lower cover, the switch upper cover and the switch lower cover are clamped to form an accommodating cavity, and the key shaft moves up and down in the accommodating cavity; the holding cavity is internally provided with a supporting frame, a compression spring which is positioned between the supporting frame and the upper switch cover and is sleeved on the key shaft, an electromagnet, a fixed contact piece and a movable contact piece which are fixedly connected on the lower switch cover and are electrically connected with a circuit board in the keyboard body, the movable contact pieces are arranged above the fixed contact pieces at intervals and are correspondingly arranged below the key shaft, the upper part of the key shaft penetrates out of the first through hole arranged at the top of the switch upper cover, the top of the key shaft is fixedly connected with a key cap which is arranged at intervals with the top of the switch upper cover, the key shaft radially and outwards extends on the side wall which is positioned below the first through hole to form an extension arm for preventing the key shaft from being pulled out of the accommodating cavity, the lower part of the key shaft penetrates through the support frame and is pressed against the movable contact piece by the lower end of the key shaft when the key shaft moves downwards so as to enable the movable contact piece to elastically deform downwards and contact with the fixed contact piece for electrical conduction, and the extension arm is fixedly provided with a permanent magnet which can attract the electromagnet and is not in contact with the electromagnet.

2. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: the keyboard comprises a keyboard body and is characterized in that a USB connecting wire with a USB interface and a Type-C power supply wire connected with a power supply are arranged on the keyboard body, and a main control chip and an OCP control chip which is electrically connected with the Type-C power supply wire and used for controlling current are arranged on a circuit board in the keyboard body.

3. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: the electromagnet comprises an electromagnet upper cover and an electromagnet lower cover which are connected and provided with an installation space, an iron core arranged in the installation space and a coil sleeved on the iron core, wherein the coil is connected with a circuit board electrically connected with the keyboard body through pins, and the pins are arranged on the electromagnet lower cover and penetrate out of the switch lower cover to be electrically connected with the circuit board in the keyboard body.

4. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: and the support frame is provided with a second through hole through which the key shaft passes and is fixedly connected to the lower switch cover through a supporting leg at the bottom of the support frame.

5. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 4, wherein: the support frame is a support plate, the bottom surface of the support plate is provided with a first groove, the second through holes are formed in the bottom surface of the first groove, and the number of the support legs is four and the support legs are correspondingly arranged at four corners of the support plate.

6. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: the top of extension arm is equipped with the second recess, the permanent magnet is installed in the second recess.

7. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: the support frame is arranged in the middle of the accommodating cavity, and the electromagnet is arranged adjacent to the support frame.

8. The electromagnetic induction type mechanical keyboard capable of freely adjusting the stroke according to claim 1, wherein: the two electromagnets are symmetrically arranged on two sides of the support frame, and the two permanent magnets are correspondingly arranged.