CN209804518U

CN209804518U - Thin keyboard switch

Info

Publication number: CN209804518U
Application number: CN201920700463.7U
Authority: CN
Inventors: 余正明; 彭建兵
Original assignee: HUIZHOU TRANTEK ELECTRONICS CO Ltd
Current assignee: HUIZHOU TRANTEK ELECTRONICS CO Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2019-12-17
Anticipated expiration: 2029-05-16

Abstract

The utility model relates to a thin keyboard switch, which comprises a base, a button arranged on the base, an upper cover buckled on the base, an elastic contact piece arranged on one side of the base, a terminal which is arranged between the elastic contact piece and the button and is matched with the elastic piece, and an upper side which is positioned on one side of the elastic contact piece; the bottom surface department of button is provided with a plurality of first guide parts, and the position department that the base corresponds with first guide part is provided with the second guide part that matches with first guide part. The utility model discloses a button is more steady smooth and easy in the up-and-down motion through the cooperation of first guide part and second guide part, third guide part and fourth guide part, make full use of the activity space of button, simplified the button structure, provide abundant space for setting up of sound production spring and switching on of light source. The upper cover is provided with the light guide column and the two groups of light guide grooves, the light guide column can guide light rays to the two groups of light transmission grooves, and the diffused light is ensured to be purer without mixed colors.

Description

Thin keyboard switch

Technical Field

The utility model relates to an electronic switch technical field, concretely relates to slim keyboard switch.

background

The mainstream mechanical keyboard switch is mostly applied to a heavy desk keyboard, and because the mechanical axis body switch occupies a certain height, the mechanical keyboard can not realize the thin height of the membrane keyboard all the time, and can not realize the advantages of lightness, thinness and portability. Although many companies have tried to manufacture thin keyboard switches for a long time, the use feeling experience is very poor through market feedback, the shaft body switch cannot be compatible with a keycap of a standard mechanical shaft switch, the price is high, and the thin keyboard switches cannot be popularized and popularized. Many new contact spring sheet structures appear in the market at present, so that the height of the switch can be effectively reduced, the manufacturing cost is reduced, and the conduction stability is improved. Although the height of switch can effectively be reduced to current slim switch structure to reduce cost, still can not compromise and press use experience such as feel, lamp effect, for example according to the circumstances that the corner has the bite, feel experience relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a press and feel and experience good, the pure slim keyboard switch of lamp effect.

The utility model discloses a following scheme realizes:

A thin keyboard switch comprises a base, a button arranged on the base, an upper cover buckled on the base, an elastic contact piece arranged on one side of the base and contacted with the button, and a terminal arranged on the base between the elastic contact piece and the button and matched with the elastic piece; the upper cover is provided with an opening, and the button penetrates through the through hole and extends out of the upper end face of the upper cover; an elastic reset piece is arranged between the bottom surface of the button and the base, a limiting step is arranged on the outer peripheral side of the button, and the size of the limiting step is larger than that of the opening; the button is provided with at least one first guide part, a second guide part matched with the first guide part is arranged at the position of the base corresponding to the first guide part, and the first guide part is movably connected with the second guide part; the button is further provided with at least one third guide part, a matched fourth guide part is arranged at the corresponding position of the base, the third guide part and the fourth guide part are movably connected, and when the button is pressed down, the elastic contact piece is in contact conduction with the terminal.

Furthermore, the elastic contact piece is U-shaped, and includes a fixing portion connected to the upper side wall of the base, and an actuating portion extending from the fixing portion and contacting with the button (the end of the actuating portion is provided with a contact portion for contacting the terminal, and the contact portion is disposed on a side of the actuating portion facing the terminal.

Furthermore, a first inclined arm which is contacted with the action part of the elastic contact piece and compresses the action part towards the direction of the fixed part is arranged at the position of the outer side wall of the button corresponding to the elastic contact piece, the first inclined arm extends out towards the direction of the inclined downward from the side view, when the button is pressed, the action part of the elastic contact piece resets towards the terminal, and the contact part is in contact conduction with the terminal; the base is provided with a concave part used for accommodating the first inclined arm at a position corresponding to the first inclined arm.

Furthermore, from overlooking the angle, define one side at elasticity contact piece place is the upside of base, still is provided with the sound production spring that is used for with the button contact on the right side of base, the button lateral wall is provided with the second communications arm with the contact of sound production spring with the position department that sound production spring corresponds, when pressing during the button, the second communications arm contacts with sound production spring.

Furthermore, a first pin for connecting a circuit board is further arranged at the bottom end of the fixing part, a second pin for connecting the circuit board is arranged at the bottom of the terminal, and the lower ends of the first pin and the second pin penetrate out of the bottom of the base; through holes are formed in the positions, corresponding to the first pin and the second pin, of the base.

Furthermore, the sounding spring is a torsion spring, and a stressed arm used for contacting the second oblique arm extends out of the end part of one end of the torsion spring; the sounding spring is connected with the base through a torsional spring limiting groove arranged on the base, and a limiting block used for limiting the stress arm is further arranged on the base.

Furthermore, one side that the base is adjacent or relative with the elastic contact piece is provided with the light trap that supplies the light to pass through, the position department that the upper cover corresponds with the light trap is provided with a leaded light post that is used for the light direction, is provided with two sets of mirror surface leaded light grooves that are used for the reflected light in upper cover up end department, and two sets of leaded light grooves use the central line of leaded light post to set up as the benchmark symmetry.

Further, be provided with on the base and supply the chamber that holds of button activity, be provided with a first mounting groove that is used for installing elasticity piece that resets in the bottom that holds the chamber, the bottom surface of button is provided with the second mounting groove that is used for installing elasticity piece that resets, elasticity resets and connects at first mounting groove the lower extreme of piece, and elasticity resets and connects the second mounting groove at the button bottom surface in the upper end of piece.

Furthermore, the elastic contact piece is connected with the base through a plurality of limiting parts arranged on the base, and the terminal is connected with the base through a limiting slot arranged on the base.

Further, the first guide part is a guide pillar, the second guide part is a guide sleeve, the third guide part is a groove, and the fourth guide part is a convex rib.

Contrast prior art, the utility model discloses following beneficial effect has:

1. The utility model discloses a button bottom has set up a plurality of first guide portions, base corresponding position department be provided with first guide portion complex second guide portion, it is more steady smooth and easy to make the button in the up-and-down motion, the cooperation of third guide portion and fourth guide portion, can play restriction button horizontal rotation swing, the activity space of button has been fully utilized, the button structure has been simplified, occupation to button surrounding space has been reduced, switch on for the setting of sound production spring and light source provides abundant space, avoid light to be disturbed by the sound production spring.

2. The base has set up the light trap that supplies the light to pass through, and upper cover department has set up leaded light post and two sets of light guide grooves, and the leaded light post can lead light in two sets of light guide grooves, via leaded light post spotlight, has guaranteed that the lamp effect of dispersing out is purer, does not have the variegated.

3. The cooperation between the second oblique arm and the generation spring can make the button have the paragraph sense of pressing and crisp sound in the process of pressing, and further improves the use experience.

Drawings

Fig. 1 is a schematic view of the overall structure of a thin keyboard switch provided by the present invention.

Fig. 2 is a schematic cross-sectional structure of embodiment 1.

Fig. 3 is an exploded view of the present example 1.

Fig. 4 is a plan view of the present embodiment 1, in which the upper cover is hidden.

Fig. 5 is a schematic structural diagram of the base in embodiment 1.

Fig. 6 is a schematic structural diagram of the upper cover of embodiment 1.

Fig. 7 is a schematic structural diagram of the button of embodiment 1.

Fig. 8 is a schematic structural view of the elastic contact piece and the terminal of the present embodiment 1.

Fig. 9 is an enlarged view of a portion a in fig. 2.

FIG. 10 is a schematic sectional view showing the structure of example 2.

Fig. 11 is an exploded view of example 2.

Fig. 12 is a plan view of embodiment 2, with the upper cover hidden.

FIG. 13 is a schematic view of a button according to embodiment 2.

Fig. 14 is a schematic structural view of a base in embodiment 2.

Detailed Description

To facilitate understanding of the present invention for those skilled in the art, the present invention will be described in further detail with reference to the following detailed description and accompanying drawings.

Example 1

Referring to fig. 1 to 9, the utility model provides a pair of slim keyboard switch, including base 1, set up button 3 on the base to and lock upper cover 2 on the base, still including set up in base one side with the elastic contact piece 4 of button contact, set up on the base between elastic contact piece and button with the terminal 5 of elastic sheet matching, from overlooking the angle, define one side at elastic contact piece place is the upside of base, still is provided with on the right side of base to be used for with the sound spring 6 of button contact. The upper cover 2 is provided with an opening 21 through which the button protrudes from the upper end surface of the upper cover. An elastic reset piece 7 is arranged between the bottom surface of the button 3 and the base, a limit step 31 is arranged on the periphery side of the button, and the size of the limit step is larger than that of the opening. In this embodiment, the opening is a circular opening, the button is also cylindrical, and the limit step is also circular. The top of the button is provided with a cross-shaped plug part which can be used for connecting the keycap.

The button 3 is provided with a plurality of first guide portions 32 (the first guide portions are arranged at the bottom of the button in the embodiment), a second guide portion 11 matched with the first guide portions is arranged at the position of the base 1 corresponding to the first guide portions, the first guide portions and the second guide portions are movably connected, when the button is pressed, the elastic contact piece is contacted with the terminal, and the button is contacted with the sounding spring. The cooperation between first guide part and the second guide part can be more steady smooth and easy when can make the button up-and-down motion, also can very smoothly pass through when pressing, has also reduced the space that occupies simultaneously. The elastic reset piece adopts a spiral compression spring. In this embodiment, a cylindrical boss is provided at the bottom of the base, and a second guide portion, to which the first guide portion is fitted, is provided in the boss. First guide part is cylindric, and first guide part and second guide part all correspond and are provided with two, also can set up more than two during the concrete implementation. The elastic reset piece can enable the button to keep the state that the upper end part is exposed out of the upper cover in the initial state, and the upper end surface of the limiting step of the button is in contact with the lower end surface of the upper cover in the initial state. In this embodiment, the first guide part is a guide pillar, the second guide part is a guide sleeve, the guide pillar is disposed on the bottom surface of the button, the guide sleeve is disposed at a position where the base corresponds to the guide pillar, the number of the guide pillar is two, the number of the guide sleeve is two, and the number of the guide pillar and the number of the guide sleeve can be 1, 3 or more in specific implementation. The first and second guides may be guide sleeves or guide posts, i.e. when one of the guides is a guide post, the other is a guide sleeve, and vice versa. The button is also provided with at least one third guide part 36, the corresponding position department of base is provided with assorted fourth guide part 8, and third guide part and fourth guide part movably connected, the third guide part is the recess in this embodiment, is provided with two, specifically sets up in spacing step department, and the fourth guide part is protruding muscle, also corresponds and is provided with two, in other embodiments, also can set up the recess at the outer wall of button, and set up protruding muscle at the base. Set up the recess at the button and set up protruding muscle at the base, perhaps set up protruding muscle at the button and set up the effect that the recess played and be the same at the base, the cooperation of third guide part and fourth guide part can play the effect of restriction button horizontal rotation wobbling.

A first inclined arm 33 which is contacted with the elastic contact piece is arranged at the position, corresponding to the elastic contact piece 4, of the outer side wall of the button 3, and the height of the first inclined arm relative to the outer wall of the button (namely the distance between the outermost position of the first inclined arm and the outer wall of the button) is increased from top to bottom; the button lateral wall is provided with the second communications bracket 34 with the contact of sound spring 6 with the position department that corresponds of sound spring 6, just the height of second communications bracket for the button outer wall (also be the distance between the position of the second communications bracket outside and the button outer wall) increases from last to down in proper order. In this embodiment, the first oblique arm and the second oblique arm are both connected with the limiting step, and the heights of the first oblique arm and the second oblique arm are sequentially increased from top to bottom to form a slope, i.e., the two oblique arms are trapezoidal (the upper end is short and the lower end is long) when viewed from the side. The base 1 is provided with a recess 13 for accommodating the first inclined arm at a position corresponding to the first inclined arm 33. When the button is pressed, the first inclined arm can enter the lower concave part.

The elastic contact piece 4 is of "U" shape and comprises a fixed portion 41 connected to the upper side wall of the base 1 and an actuating portion 42 in contact with the first inclined arm 33 of the push-button 3, the end of the actuating portion being provided with a contact portion 43 for contacting the terminal 5, the contact portion being provided on the side of the actuating portion facing the contact terminal. When the button is in an initial state, the lower end of the first inclined arm is contacted with the action part of the elastic contact piece, the first inclined arm presses the elastic contact piece, so that the action part is compressed and approaches towards the fixed part, and the contact part at the end part of the action part is separated from the terminal. When the button is pressed, the length of the first inclined arm is increased from top to bottom, and the length of the inclined arm is shorter and shorter as the button moves downwards, so that the action part of the elastic contact piece moves towards the direction away from the fixed part under the action of the elastic force (the first inclined arm is always kept in contact with the fixed part in the pressing process of the button) until the contact part contacts with the terminal and is conducted. When the button returns to the initial position under the action of the elastic reset piece (namely, the spiral compression spring), the action part moves towards the fixed part under the extrusion of the first inclined arm, and the contact part is separated from the terminal.

A first pin 44 for connecting a circuit board is further arranged at the bottom end of the fixing portion 41, a second pin 51 for connecting the circuit board is arranged at the bottom of the terminal 5, and the lower ends of the first pin and the second pin penetrate out of the bottom of the base 1; through holes 12 are formed in the positions, corresponding to the first pin and the second pin, of the base. The first pin and the second pin penetrate through the corresponding through holes and are electrically connected with the circuit board, and when the contact part contacts the terminal, the circuit is conducted.

The base is provided with the light trap 14 that supplies the light to pass through with the adjacent or relative one side of elasticity contact piece, and from overlooking the angle, light trap 14 sets up the downside at base 1, upper cover 2 is provided with a leaded light post 22 that is used for the light direction with the position department that the light trap corresponds, is provided with two sets of mirror surface light guide grooves 23 that are used for the reflected light in upper cover up end department, and two sets of light guide grooves use the central line of leaded light post to set up as the benchmark symmetry. Every group light guide groove all is provided with two, and the shape of light guide groove is arc cell body roughly, specifically is that first light guide groove is close to the opening setting, and second light guide groove sets up the outside at first light guide groove. The leaded light post is trapezoidal in this embodiment, and the light guide slot can adopt transparent material, and the leaded light post can adopt translucent material, and the leaded light post will follow the light polymerization that the light trap of below jetted out and lead in two sets of light guide slots of both sides, and the reflection through the light guide slot again, the lamp effect of dispersing out is purer, does not have mixed colours, and does not do special leaded light in the traditional structure and handle, and light is dispersed out single colour and can demonstrate rainbow layering color.

The base 1 is provided with a containing cavity 15 for the movement of the button, the bottom of the containing cavity is provided with a first mounting groove 16 for mounting an elastic reset piece, the bottom surface of the button is provided with a second mounting groove 35 for mounting the elastic reset piece, and the upper end and the lower end of the elastic reset piece 7 (namely, a spiral compression spring) are respectively connected with the second mounting groove and the first mounting groove. The fourth guide portion is disposed at the inner wall of the accommodating chamber. When the return elastic member (i.e., the coil compression spring) is mounted in the first mounting groove, the coil compression spring is fitted around the outer circumferential side of the cylindrical boss portion where the second guide portion is located. The elastic contact piece 4 is connected to the base through a plurality of stopper portions 17 provided on the base 1, and the terminal 5 is connected to the base through a stopper slot 18 provided on the base. From overlooking, spacing portion is provided with two, sets up in the position that is close to the base upside, leaves the clearance that supplies the fixed part of elasticity contact piece to insert between two spacing portions and the base.

The sounding spring 6 is a torsion spring, and a stressed arm 61 for contacting the second inclined arm 34 extends from one end of the torsion spring. The sounding spring 6 is connected with the base through a torsional spring limiting groove 19 arranged on the base 1, and a limiting block 10 used for limiting the force receiving arm is further arranged on the base. The torsional spring specifically is transversely placing, and its atress arm extends to the position that corresponds with the second sloping arm, and when pressing down the button, the second sloping arm can contact just and press the atress arm, and the atress arm takes place to strike the stopper after elastic deformation and sends crisp sound, also provides the section sense of falling when pressing simultaneously. In addition, through the elasticity piece and the sound spring that reset of changing different dynamics that trigger, can present different feels. Meanwhile, the sound spring and the second inclined arm are not arranged during the specific implementation, so that the silent effect and the straight-up and straight-down pressing hand feeling are achieved.

example 2

Referring to fig. 1, 6, 8, 10 to 14, the structure of the upper cover, the elastic contact piece, and the like in this embodiment is the same as that in embodiment 1. The thin keyboard switch comprises a base 1, a button 3 arranged on the base, an upper cover 2 buckled on the base, an elastic contact piece 4 arranged on one side of the base and contacted with the button, and a terminal 5 arranged on the base between the elastic contact piece and the button and matched with the elastic piece, wherein the elastic contact piece is defined as the upper side of the base from the overlooking angle, and a sounding spring 6 used for being contacted with the button is further arranged on the right side of the base. The upper cover 2 is provided with an opening 21 through which the button protrudes from the upper end surface of the upper cover. An elastic reset piece 7 is arranged between the bottom surface of the button 3 and the base. In this embodiment, the opening is a circular opening, the button is also cylindrical, and the limit step is also circular. The top of the button is provided with a cross-shaped plug part which can be used for connecting the keycap.

The button 3 is provided with a plurality of first guide parts 32, the position department that base 1 and first guide part correspond is provided with the second guide part 11 that matches with first guide part, and first guide part and second guide part movable connection, and when pressing the button, the elasticity contact piece contacts with the terminal, and the button contacts with the sound production spring. The cooperation between first guide part and the second guide part can be more steady smooth and easy when can make the button up-and-down motion, also can very smoothly pass through when pressing, has also reduced the space that occupies simultaneously. The elastic reset piece adopts a spiral compression spring. In this embodiment, a cylindrical boss portion is provided at the bottom of the base, and a second guide portion that engages with the first guide portion is provided in the boss portion. The elastic reset piece can enable the button to keep the state that the upper end part is exposed out of the upper cover in the initial state, and the upper end surface of the limiting step of the button is in contact with the lower end surface of the upper cover in the initial state. The first and second guides may be guide sleeves or guide posts, i.e. when one of the guides is a guide post, the other is a guide sleeve, and vice versa. In this embodiment, a guide sleeve is disposed at the bottom of the button (at this time, the elastic reset piece, that is, the upper end of the helical compression spring, is connected to the inner bottom surface of the guide sleeve), a guide pillar is correspondingly disposed at the base, a guide pillar is disposed at the side wall of the button, and a guide sleeve is disposed at the corresponding position of the base. The button outer wall is provided with third guide portion 36, and the corresponding position department of base is provided with assorted fourth guide portion 8, and third guide portion and fourth guide portion swing joint, and the fourth guide portion is provided with two in this embodiment, and the third guide portion also corresponds and is provided with two, and contrary in embodiment 1, the third guide portion is protruding muscle in this embodiment, and the fourth guide portion is the recess. The fourth guide part is matched with the third guide part, so that the left-right rotation and swing of the button can be limited. Since the rib can have the same limiting function as the limiting step, the button may be provided with the limiting step 31 or may not be provided with the limiting step, and when the limiting step 31 is provided on the outer peripheral side of the button, the size of the limiting step larger than the size of the opening indicates the state where the limiting step is not provided in the drawing of this embodiment.

The base 1 is provided with a containing cavity 15 for the movement of the button, the bottom of the containing cavity is provided with a first mounting groove 16 for mounting an elastic reset piece, and the upper end and the lower end of the elastic reset piece 7 (namely, a spiral compression spring) are respectively connected with the inner bottom surface of the guide sleeve and the first mounting groove, so that the bottom surface of the button in the embodiment is not provided with a second mounting groove for mounting the elastic reset piece. When the return elastic member (i.e., the coil compression spring) is mounted in the first mounting groove, the coil compression spring is fitted around the outer circumferential side of the cylindrical boss portion where the second guide portion is located. The elastic contact piece 4 is connected to the base through a plurality of stopper portions 17 provided on the base 1, and the terminal 5 is connected to the base through a stopper slot 18 provided on the base. From overlooking, spacing portion is provided with two, sets up in the position that is close to the base upside, leaves the clearance that supplies the fixed part of elasticity contact piece to insert between two spacing portions and the base. Compared with embodiment 1, the convex rib of the base in the embodiment is changed into the groove, a guide sleeve corresponding to the guide pillar at the side wall of the button is added, and the rest parts of the base are the same as those in embodiment 1

The utility model discloses a button bottom has set up a plurality of first guide portions, base corresponding position department be provided with first guide portion complex second guide portion, it is more steady smooth and easy to make the button in the up-and-down motion, the cooperation of third guide portion and fourth guide portion, can play restriction button horizontal rotation swing, the activity space of button has been fully utilized, the button structure has been simplified, occupation to button surrounding space has been reduced, switch on for the setting of sound production spring and light source provides abundant space, avoid light to be disturbed by the sound production spring. The base has set up the light trap that supplies the light to pass through, and upper cover department has set up leaded light post and two sets of light guide grooves, and the light guide grooves can lead light in two sets of light guide grooves, via leaded light post spotlight, has guaranteed that the lamp effect of dispersing out is purer, does not have the variegated. On the other hand, the cooperation between the second inclined arm and the generation spring can enable the button to have pressing paragraph feeling and crisp sound in the pressing process, and the use experience is further improved.

In the description of the present invention, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, "plurality" or "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected" and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection, or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the scope of the included claims.

Claims

1. A thin keyboard switch comprises a base (1), a button (3) arranged on the base, and an upper cover (2) buckled on the base, and is characterized by also comprising an elastic contact piece (4) arranged on one side of the base and contacted with the button, and a terminal (5) arranged on the base between the elastic contact piece and the button and matched with the elastic piece; the upper cover (2) is provided with an opening (21), and the button penetrates through the through hole and extends out of the upper end surface of the upper cover; an elastic reset piece (7) is arranged between the bottom surface of the button (3) and the base, a limiting step (31) is arranged on the outer peripheral side of the button, and the size of the limiting step is larger than that of the opening; the button (3) is provided with at least one first guide part (32), a second guide part (11) matched with the first guide part is arranged at the position of the base (1) corresponding to the first guide part, and the first guide part is movably connected with the second guide part; the button is further provided with at least one third guide part (36), a matched fourth guide part (8) is arranged at the corresponding position of the base, the third guide part and the fourth guide part are movably connected, and when the button is pressed down, the elastic contact piece is in contact conduction with the terminal.

2. The thin keyboard switch of claim 1, wherein the elastic contact piece (4) is "U" shaped, and comprises a fixed part (41) connected to the upper side wall of the base (1), and an action part (42) which is bent and extended from the fixed part and is contacted with the button (3), the end of the action part is provided with a contact part (43) for contacting the terminal (5), and the contact part is arranged on the side of the action part facing the terminal.

3. The thin keyboard switch according to claim 2, wherein a first inclined arm (33) contacting with the action portion (42) of the elastic contact piece and compressing the action portion toward the fixing portion is provided on the outer side wall of the button (3) corresponding to the elastic contact piece (4), the first inclined arm extends in a downward direction when viewed from the side, when the button is pressed, the action portion of the elastic contact piece is returned toward the terminal, and the contact portion is in contact with the terminal; the base (1) is provided with a concave part (13) used for accommodating the first inclined arm at a position corresponding to the first inclined arm (33).

4. The thin keyboard switch of claim 2, wherein, from a top view, the side where the elastic contact piece is located is defined as an upper side of the base, a sounding spring (6) for contacting with the button is further disposed on a right side of the base, a second inclined arm (34) contacting with the sounding spring is disposed at a position where the button outer side wall corresponds to the sounding spring (6), and the second inclined arm contacts with the sounding spring when the button is pressed.

5. The thin keyboard switch according to claim 2, wherein a first pin (44) for connecting a circuit board is further disposed at the bottom end of the fixing portion (41), a second pin (51) for connecting a circuit board is disposed at the bottom of the terminal (5), and the lower ends of the first pin and the second pin both penetrate through the bottom of the base (1); through holes (12) are arranged at the positions of the base corresponding to the first pin and the second pin.

6. The thin keyboard switch according to claim 4, wherein the sound spring (6) is a torsion spring, and one end of the torsion spring extends out of a stressed arm (61) for contacting the second inclined arm (34); the sounding spring (6) is connected with the base through a torsion spring limiting groove (19) arranged on the base (1), and a limiting block (10) used for limiting the force-receiving arm is further arranged on the base.

7. The thin keyboard switch of claim 1, wherein a light hole (14) for light to pass through is disposed at a side of the base (1) adjacent to or opposite to the elastic contact piece, a light guide pillar (22) for guiding light is disposed at a position of the upper cover (2) corresponding to the light hole, two sets of mirror surface light guide grooves (23) for reflecting light are disposed at an upper end surface of the upper cover, and the two sets of light guide grooves are symmetrically disposed with respect to a center line of the light guide pillar.

8. The thin keyboard switch according to claim 1, wherein the base (1) is provided with a receiving cavity (15) for the button to move, a first mounting groove (16) for mounting the elastic reset member is formed at the bottom of the receiving cavity, a second mounting groove (35) for mounting the elastic reset member is formed on the bottom surface of the button, the lower end of the elastic reset member is connected to the first mounting groove, and the upper end of the elastic reset member (7) is connected to the second mounting groove on the bottom surface of the button (3).

9. The thin keyboard switch according to claim 1, wherein the elastic contact piece (4) is connected to the base through a plurality of stopper portions (17) provided on the base (1), and the terminal (5) is connected to the base through a stopper insertion groove (18) provided on the base.

10. The thin keyboard switch of claim 1, wherein the first guide portion is a guide post, the second guide portion is a guide sleeve, the third guide portion is a groove, and the fourth guide portion is a rib.