CN209765447U - thin film contact type optical keyboard - Google Patents

Abstract

the utility model provides a film contact formula optical keyboard, including the button, the button includes: the keycap protrudes out of the surface of the keyboard; the key body is arranged below the keycap, is used for providing elastic restoring force and a bottom plate, is arranged below the key body, and is used for triggering the key to output a key signal; the key body comprises a shell and a shaft core embedded in the shell, the bottom plate is provided with a conductive film, the conductive film and the shaft core are oppositely arranged at intervals, and the key body can enable the shaft core to be abutted against the conductive film under the action of pressing force so as to complete one-time key operation. Compared with the prior art, the utility model provides a thin film contact formula optical keyboard frivolousization degree is high, and it is convenient to dismantle, easy to maintain and practice thrift the cost.

Description

Thin film contact type optical keyboard

Technical Field

the utility model relates to a computer auxiliary assembly field especially relates to a film contact formula optical keyboard.

Background

to allow user input to the electronic device, keyboards are generally known in the art. The keyboard includes several keys located within several recesses or openings in a top portion of the keyboard. The keys may be electrically connected to a printed circuit board located within the electronic device. Typically including similar specifications as a keyboard. In other words, at least a portion of the printed circuit board is located below each key. The printed circuit board may include several switches or other components so that one of the switches or other components is activated when a key is pressed.

With the rapid development, the lightness and thinness, the miniaturization and the high integration of the portable notebook computer become the pursuit of computer manufacturers and users, which requires the auxiliary equipment of the computer, especially the keyboard on the portable notebook computer, and also satisfies the lightness and thinness requirements, while the notebook keyboard in the prior art mostly adopts the structures of a keycap, a pressing structure and a circuit board, wherein the pressing structure usually adopts a contact mode, namely, silica gel is adopted to contact and press a conductive film, and a scissors type balance structure is used for supporting, so that the accommodation results in the thick key switch, the pressing life time is low, and the rattling sound generated by the typing of the keyboard can not be realized.

Therefore, there is a need to provide a new type of thin film contact optical keyboard to overcome the above-mentioned drawbacks.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel film contact formula optical keyboard, its frivolous degree is high, and it is convenient to dismantle, easy to maintain and practice thrift the cost

In order to achieve the above object, the present invention provides a film contact type optical keyboard, including a key, the key includes:

The keycap protrudes out of the surface of the keyboard;

The key body is arranged below the keycap and used for providing elastic restoring force;

The bottom plate is arranged below the key body and used for triggering the key to output a key signal;

the key body comprises a shell and a shaft core embedded in the shell, the bottom plate is provided with a conductive film, the conductive film and the shaft core are oppositely arranged at intervals, and the key body can enable the shaft core to be abutted against the conductive film under the action of pressing force so as to complete one-time key operation.

Further, the axle core includes that the center sets up the fixed bolster of cylindricality counter bore, inlays to be established contact, the lid of cylindricality counter bore are located the apron of cylindricality counter bore and press from both sides and establish the contact with first elastic component between the apron, the long edge direction both sides of fixed bolster are provided with the guide rail, the guide rail is kept away from one side of fixed bolster is equipped with the lug, the bilateral symmetry of guide rail is provided with the projection, the minor face direction both sides of fixed bolster are provided with a plurality of protruding portions, and are a plurality of the crisscross setting of protruding portion, the protruding portion inlays and establishes first connecting rod.

Further, the casing includes the upper cover and with the base of upper cover joint.

Further, the upper cover includes middle open-ended lid body and certainly the lid body to the sunken depressed part that extends of base direction, the depressed part be equipped with the joint post of bottom plate block.

Further, the base is including seting up circular through-hole the diapire, certainly lateral wall, the cover that the diapire is buckled and is extended are established the outer second elastic component of circumference of circular through-hole and setting are in two guide posts on the diapire, the lateral wall includes the long limit lateral wall that two parallel intervals set up and connects two the two minor face lateral walls of long limit lateral wall, two the parallel interval of minor face lateral wall sets up, two the guide post sets up circular through-hole with between the long limit lateral wall, the second elastic component is kept away from a pot head of diapire is located the cylindricality counter bore.

further, two the minor face lateral wall is equipped with the breach, the both sides of breach are provided with the jack catch, the jack catch inlays to be located the depressed part with between the joint post.

further, arc-shaped grooves are formed in the two sides, close to the short side walls, of the long side walls, and second connecting rods are embedded in the arc-shaped grooves.

furthermore, a containing groove is formed in the position, opposite to the guide post, of the side wall of the long edge, an elastic sheet is arranged in the containing groove and opposite to the protruding block, and the protruding block can be embedded in the elastic sheet.

Further, the shell fragment include with the fixed arm of the diapire butt of storage tank, certainly the arc elastic arm that the fixed arm both sides were buckled in opposite directions and are extended, from two the arc elastic arm is kept away from the support arm that fixed arm one side was buckled and is extended and is kept away from two the support arm the butt arm that arc elastic arm one side reverse extension.

further, the key cap with one side of key body butt is equipped with a plurality of buckles, and is a plurality of the buckle with the second connecting rod joint.

compared with the prior art, the utility model discloses a film contact formula optical keyboard has following beneficial effect:

The connecting rods are adopted for balancing, so that the modular assembly is arranged in the keyboard, and the modular switch can be disassembled at any time under the condition of not disassembling a computer or the keyboard;

A plurality of connecting rods are adopted to balance the keycaps, so that the height of the mechanical module switch is reduced to be thinnest;

The movable spring body is adopted to press the conductive film to realize the signal function;

The spring is adopted for resetting, so that the service life times of the spring are long;

the elastic sheet is adopted to press a certain collapse point, the quick switching and resetting are carried out, the impact stop point is struck, the sound is generated, and the clicking sound generated by pressing can be realized;

Adopt interchangeable formula key cap, practice thrift the cost, it is convenient to maintain.

Drawings

in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

Fig. 1 is a perspective view of a thin film contact type optical keyboard according to the present invention;

Fig. 2 is an exploded perspective view of the thin film contact type optical keyboard of the present invention;

Fig. 3 is a cross-sectional view of the thin film contact type optical keyboard of the present invention;

Fig. 4 is a cross-sectional view of the bump and the elastic sheet of the thin film contact type optical keyboard of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the thin film contact type optical keyboard 100 includes a key, and the key includes: key cap 1, key body 2 and bottom plate 3. The key cap 1 protrudes out of the keyboard and is used for facilitating pressing operation of a user, the key body 2 is used for providing elastic restoring force for the key cap and enabling the key cap to move up and down in a direction perpendicular to a horizontal plane where the keyboard is located when the key cap is pressed, and the bottom plate 3 is used for fixing the keys and outputting key signals when the keys are triggered to complete one-time key input operation.

Referring to fig. 2 and 4, a plurality of buckles 11 are arranged on one side of the key cap 1 abutting against the key body 2, and the plurality of buckles 11 are fastened with the key body 2.

Referring to fig. 2 and 3, the key body 2 includes a housing 21 and a shaft core 22 embedded in the housing 21, the housing 21 is used for fixing the shaft core 22, and the shaft core 22 is used for abutting against the bottom edge 3 to trigger a key signal when a key is input.

The spindle 22 comprises a fixing bracket 221 with a cylindrical counterbore 220 at the center, a contact 222 embedded in the cylindrical counterbore 220, a cover plate 223 covering the cylindrical counterbore 220, and a first elastic member 224 clamped between the contact 222 and the cover plate 223, wherein the cover plate 223 is arranged at one side of the cylindrical counterbore 220 close to the keycap 2, the contact 222 is arranged in the cylindrical counterbore 220 and close to one side of the bottom plate 3, when the spindle 22 starts to move towards the bottom plate 3 when pressed, the contact 222 abuts against the bottom plate 3, and in the process of continuing to press down, in order to avoid causing a strong pressure on a unit area to the bottom plate 3, the contact 222 starts to compress the first elastic member 224 upwards, so that the pressure at the part where the bottom plate 3 abuts against the contact 222 is prevented from being too high, and the cover plate 223 limits the first elastic member 224, when the pressing is finished, the first elastic member 224 may push the contact 222 to return to the initial position.

Fixed bolster 221 be used for with casing 21 swing joint, the long edge direction both sides of fixed bolster 221 are provided with guide rail 225, guide rail 225 be used for with axle core 22 is along the perpendicular to the direction of casing place horizontal plane is gone up to lead, guide rail 225 keeps away from one side of fixed bolster 221 is equipped with lug 226, lug 226 be used for with the casing 21 cooperation is sent the button sound, guide rail 225's bilateral symmetry is provided with projection 227, projection 227 is fixed stop block, the minor face direction both sides of fixed bolster 221 are provided with a plurality of protruding portions 228, and are a plurality of protruding portions 228 sets up in the crisscross way, and a plurality of protruding portions that set up in the cross form a joint structure, first connecting rod 4 is inlayed to protruding portion 228. The first link 229 has one end fixed to the housing 21 and the other end embedded in the shaft core 22 for providing a supporting force to the shaft core 22.

the housing 21 includes an upper cover 211 and a base 212 clamped to the upper cover 211. The upper cover 211 includes a cover body 2111 with an opening at the middle and a recessed portion 2112 recessed and extending from the cover body 2111 toward the base 212, and the recessed portion 2112 is provided with a locking post 21121 locked with the base 212. The clamping columns 21121 are used for being fixedly connected with the bottom plate 13.

the base 212 includes a bottom wall 2121 provided with a circular through hole 2120, a side wall 2122 bent and extended from the bottom wall 2121, a second elastic member 2123 sleeved on the outer circumference of the circular through hole 2120, and two guiding columns 2124 arranged on the bottom wall 2121, wherein the circular through hole 2120 faces the cylindrical counter bore 220, when a key is pressed, the cylindrical counter bore 220 can pass through the circular through hole 2120, so that the contact 222 can abut against the bottom plate 13, and the inner diameter of the circular through hole is larger than the outer diameter of the cylindrical counter bore.

The side wall 2122 includes two long side walls 21221 arranged in parallel at an interval and two short side walls 21222 connecting the two long side walls 21221, the two short side walls 21222 are arranged in parallel at an interval, the two guide posts 2124 are arranged between the circular through hole 2120 and the long side walls 21221, and one end of the second elastic member 213 away from the bottom wall 2121 is sleeved on the outer circumferential surface of the cylindrical counterbore 220. The guiding post 2124 cooperates with the guiding rail 225 to guide the movement of the shaft core 22 in a direction perpendicular to the horizontal plane of the key.

Notches 21220 are formed in the two short side walls 21222, claws 21223 are arranged on two sides of each notch 21220, and the claws 21223 are embedded between the concave portion 2112 and the clamping post 21121.

The two sides of the long side wall 21221 close to the short side wall 21222 are provided with arc grooves 21220, and the second connecting rod 5 is embedded in the arc grooves 21220. The portion of the long side wall 21221 facing the guide post 2124 is provided with a receiving groove 2001, an elastic piece 6 is arranged in the receiving groove 2001, the elastic piece 6 is arranged facing the protrusion 226, and the protrusion 266 can be embedded in the elastic piece 6, so that the elastic piece 6 collides with the side wall of the receiving groove 2001, and a rattling button is generated.

The elastic sheet 6 comprises a fixed arm 61 abutted against the bottom wall of the accommodating groove 2001, arc-shaped elastic arms 62 oppositely bent and extended from two sides of the fixed arm 61, supporting arms 63 bent and extended from one side of the two arc-shaped elastic arms 62 far away from the fixed arm 61, and abutting arms 64 reversely extended from one side of the two supporting arms 63 far away from the arc-shaped elastic arms 62.

The bottom plate 3 includes a key cap panel 31 engaged with the key cap 1, a key body fixing plate 32 disposed under the key cap panel 31, a conductive film 33 disposed under the key body fixing plate 32, and a substrate 34 disposed under the conductive film 33. The conductive film 33 and the shaft core 22 are oppositely arranged at intervals, and the key body 2 can enable the shaft core to be abutted against the conductive film 33 under the action of a pressing force so as to complete one-time key operation. The contact 222 makes contact with the conductive film 33, thereby generating a key signal.

the first elastic member 224 and the second elastic member 2123 are each a spring.

Specifically, the key cap passes through the buckle joint in the second connecting rod, and the one end setting of second connecting rod is at the key body, and when pressing, the second connecting rod carries out the downward pressure axle core to axle core direction, and the axle core receives the pressing force after, downstream, and the cylindricality counter bore passes circular through-hole for contact butt is in the conductive film on the bottom plate, accomplishes the key input after, and the pressing force disappears, and the second elastic component upwards provides the restoring force, and first connecting rod support axle core reverts initial position, is used for the key input next time.

Compared with the prior art, the utility model discloses a film contact formula optical keyboard has following beneficial effect:

The connecting rods are adopted for balancing, so that the modular assembly is arranged in the keyboard, and the modular switch can be disassembled at any time under the condition of not disassembling a computer or the keyboard;

a plurality of connecting rods are adopted to balance the keycaps, so that the height of the mechanical module switch is reduced to be thinnest;

the movable spring body is adopted to press the conductive film to realize the signal function;

The spring is adopted for resetting, so that the service life times of the spring are long;

the elastic sheet is adopted to press a certain collapse point, the quick switching and resetting are carried out, the impact stop point is struck, the sound is generated, and the clicking sound generated by pressing can be realized;

Adopt interchangeable formula key cap, practice thrift the cost, it is convenient to maintain.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (10)

1. A membrane contact optical keyboard comprising keys, wherein the keys comprise:

The keycap protrudes out of the surface of the keyboard;

The key body is arranged below the keycap and used for providing elastic restoring force;

The bottom plate is arranged below the key body and used for triggering the key to output a key signal;

the key body comprises a shell and a shaft core embedded in the shell, the bottom plate is provided with a conductive film, the conductive film and the shaft core are oppositely arranged at intervals, and the key body can enable the shaft core to be abutted against the conductive film under the action of pressing force so as to complete one-time key operation.

2. The membrane contact optical keyboard of claim 1, wherein: the axle core includes that the center sets up the fixed bolster of cylindricality counter bore, inlays to be established contact, the lid of cylindricality counter bore are located the apron of cylindricality counter bore and press from both sides and establish the contact with first elastic component between the apron, the long limit direction both sides of fixed bolster are provided with the guide rail, the guide rail is kept away from one side of fixed bolster is equipped with the lug, the bilateral symmetry of guide rail is provided with the projection, the minor face direction both sides of fixed bolster are provided with a plurality of protruding portions, and are a plurality of the crisscross setting of protruding portion, the protruding portion inlays establishes first connecting rod.

3. The membrane contact optical keyboard of claim 2, wherein: the casing include the upper cover and with the base of upper cover joint.

4. The membrane contact optical keyboard of claim 3, wherein: the upper cover includes middle open-ended lid body and certainly the lid body to the sunken depressed part that extends of base direction, the depressed part be equipped with the joint post of bottom plate block.

5. The membrane contact optical keyboard of claim 4, wherein: the base is including seting up the diapire of circular through-hole, certainly lateral wall, the cover that the diapire is buckled and is extended are established the outer second elastic component of circumference of circular through-hole and setting are in two guide posts on the diapire, the lateral wall includes the long limit lateral wall that two parallel intervals set up and connects two the two minor face lateral walls of long limit lateral wall, two the parallel interval of minor face lateral wall sets up, two the guide post sets up circular through-hole with between the long limit lateral wall, the second elastic component is kept away from a pot head of diapire is located the cylindricality counter bore.

6. The membrane contact optical keyboard of claim 5, wherein: two the minor face lateral wall is equipped with the breach, the both sides of breach are provided with the jack catch, the jack catch inlays to be located the depressed part with between the joint post.

7. the membrane contact optical keyboard of claim 5, wherein: the two sides of the long side wall close to the short side wall are provided with arc grooves, and the second connecting rod is embedded in the arc grooves.

8. The membrane contact optical keyboard of claim 5, wherein: the position, facing the guide post, of the side wall of the long edge is provided with an accommodating groove, an elastic sheet is arranged in the accommodating groove, the elastic sheet is facing the convex block, and the convex block can be embedded in the elastic sheet.

9. The membrane contact optical keyboard of claim 8, wherein: the shell fragment include with the fixed arm of the diapire butt of storage tank, certainly the arc elastic arm that the fixed arm both sides were buckled in opposite directions and are extended, from two the arc elastic arm is kept away from the support arm that fixed arm one side bending type extended and from two the support arm is kept away from the butt arm that arc elastic arm one side was reverse to be extended.

10. the membrane contact optical keyboard of claim 7, wherein: the keycap is connected with the second connecting rod in a clamped mode, and a plurality of buckles are arranged on one side, abutted against the key body, of the keycap.