TWM572566U - Highly balanced ultra-thin push-button switch - Google Patents

Abstract

The utility model discloses a high-balanced ultra-thin key switch, which comprises a base provided with a receiving groove, and a conduction point A and a conduction point B are arranged at the bottom of the receiving groove, and further comprises a receiving point in the receiving groove. a conducting elastic body, a guiding core disposed in the receiving groove and located above the conducting elastic body, and a cover sleeved on the upper portion of the guiding core and covering the receiving groove, the conductive elastic body is arched upwardly Forming a pot-like protrusion, and the conduction point A is in contact with the edge of the conduction elastic body, the conduction point B is located under the bottom protrusion of the pot; by pressing the lead core downward, and transmitting the pressing force to the conduction elastic body a pot-shaped protrusion in the middle portion, the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B to achieve a conduction function, and the bottom protrusion of the pot is rebounded by an elastic restoring force, and the bottom protrusion of the pot is The conduction point B is separated to realize the disconnection function. The novel can realize the on and off functions of the key switch, the action is precise, the conduction is sensitive, the thickness is thin, the balance is good, and the stability is high.

Description

High balance ultra-thin key switch

The invention relates to a key switch, in particular to a high balance ultra-thin key switch.

The push button switch is a switch widely used on the keyboard. The main structure of the switch includes a base, an upper cover, a static contact piece, a movable contact piece and a guiding core, and the upper cover and the base are enclosed to form a receiving cavity, and the static contact piece, the movable contact piece and the guiding core are disposed on the The accommodating cavity is arranged, and one end of the guiding core is exposed outside the accommodating cavity, and the guiding core is pressed by pressing, so that the guiding core moves up and down, and then acts on the movable contact piece through the guiding core, so that the movable contact piece is in contact with the static contact piece or Separate and separate, so as to realize the on and off functions of the push button switch.

The above-mentioned conventional key switch structure can provide the user with the function of disconnecting or conducting the connection between the static contact piece and the movable contact piece. However, in actual use, it still finds that there are still many shortcomings in its own structure and performance. As a result, the existing push button switches fail to achieve the best use effect and work efficiency in practical applications.

At the same time, in the existing push button switch, the lower end of the lead core is not directly in contact with the inside of the base, and in the process of pressing the lead core to move up and down, due to the different force positions acting on the lead core, the process of moving the lead core up and down In the middle, there is a phenomenon that the core is inclined and cannot move in the vertical direction, so that the overall pressing stability is low.

In view of the above shortcomings, the object of the present invention is to provide a high-balanced ultra-thin key switch with precise action, sensitive conduction, thin thickness, good balance and high stability.

The technical solution adopted by the present invention to achieve the above objectives is:

A high-balanced ultra-thin key switch includes a base and a key cap disposed on the base, a receiving groove is disposed on the base, and a conduction point A is disposed at a bottom of the receiving groove And a conductive point B, further comprising: a conductive elastic body disposed in the receiving groove, a guiding core disposed in the receiving groove and located above the conductive elastic body, and a set of the guiding core a cover of the upper portion of the lead core and covering the receiving groove, wherein the central portion of the conductive elastic body is upwardly arched to form a bottom protrusion, and the conduction point A is in contact with the edge of the conductive elastic body, and the conduction point B is located The bottom of the pot is below the bottom; the bottom of the pot is pressed downward, and the pressing force is transmitted to the bottom protrusion of the middle of the conducting elastic body, and the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B. The conduction function is realized, and the bottom protrusion of the pot is rebounded by the elastic restoring force, and the bottom protrusion of the pot is separated from the conduction point B to realize the disconnection function.

As a further improvement of the present invention, the middle portion of the core is upwardly arched, forming an upper boss that moves up and down on the upper and lower end faces of the cover, and an annular card body extending outwardly from the lower end edge of the upper boss, wherein the ring The card body is limited to the bottom of the cover, and the lower end of the upper boss extends downwardly with a guiding shaft located above the bottom protrusion of the pan.

As a further improvement of the present invention, the lower end of the annular card body extends downward and is in contact with the upper end edge of the conductive elastic body.

As a further improvement of the present invention, a soft elastic body is disposed in the accommodating groove and between the lead core and the conductive elastic body, and the soft elastic body includes an elastic negative film on the upper end surface of the conductive elastic body and a resilient guide post disposed at a center of the upper end of the elastic film and located directly below the guide shaft; by pressing the guide core downwardly, and transmitting the pressing force to the bottom of the conductive elastic body through the soft elastic body The bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B to achieve a conduction function, and the bottom of the pot is rebounded by the elastic restoring force of the soft elastic body, and the bottom protrusion of the pot is The conduction point B is separated to realize the disconnection function.

As a further improvement of the present invention, the middle portion of the elastic film is upwardly arched, and the edge of the elastic film is in contact with the edge of the upper end surface of the conductive elastic body.

As a further improvement of the present invention, a spring A is disposed in the accommodating groove and between the guiding core and the conducting elastic body, the upper end of the spring A is sleeved around the guiding shaft, and the lower end is located on the conducting elastic body. By pressing the lead core downward, and transmitting the pressing force to the bottom portion of the conductive elastic body by the spring A, the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B, The conduction function is realized, and the bottom-like protrusion of the pot is rebounded by the elastic restoring force of the spring A, and the bottom protrusion of the pot is separated from the conduction point B to realize the disconnection function.

As a further improvement of the present invention, a spring B is disposed in the accommodating groove and between the guiding core and the soft elastic body. The upper end of the spring B is sleeved on the outer periphery of the guiding shaft, and the lower end is sleeved on the elastic guiding. The periphery of the column; by pressing down the guiding core, and transmitting the pressing force to the bottom-shaped protrusion of the middle of the conducting elastic body by the soft elastic body, the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B The conduction function is realized, and the bottom-like protrusion of the pot is rebounded by the elastic restoring force of the spring B, and the bottom protrusion of the pot is separated from the conduction point B to realize the disconnection function.

As a further improvement of the present invention, a ring groove is disposed on the base and around the accommodating groove, and a balance frame is disposed in the ring groove, the balance frame includes a balance bar A and a ring disposed on the ring a balance bar B on the periphery of the rod A, and the balance bar AA and the balance bar B are closed frame structures; the opposite outer sides of the balance bar A are respectively provided with a plug shaft, and the balance bar B is opposite An insertion hole for inserting the insertion shaft is respectively disposed on the two inner side edges; and at the same time, a pair of insertion posts are respectively disposed on opposite outer side edges of one end portion of the balance bar B, and the insertion is provided on the base The slot into which the post is inserted.

As a further improvement of the present invention, a mounting plate is disposed in the annular groove and on the outer side of the receiving groove. One end of the balance bar A is embedded between the mounting plate and the outer wall of the receiving groove.

As a further improvement of the present invention, a front rib is protruded outwardly from the outer wall of the front end of the accommodating groove, and a rear rib is protruded outwardly from the outer wall of the mounting plate; the cover includes a cover for the accommodating a top cover piece at an upper end of the slot, a front lower hook piece provided at a front end of the upper cover piece and having a front card hole, and a rear lower hook piece provided at a rear end of the upper cover piece and having a rear card hole, the front lower hook piece is provided The front bead is inserted into the front card hole, and the rear lower hook piece is hooked on the outer wall of the mounting plate, and the rear bead is inserted into the rear card hole to make the balance One end of the rod A is limited to the underside of the cover.

The utility model has the beneficial effects that an ultra-thin conductive elastic body is used as the elastic conductive element, and the soft elastic body is used for protecting the elastic conductive body and the force for conducting the guiding core, and the spring is used for pre-stressing and rebounding. The function realizes the on and off function of the button switch, and the action is precise and the conduction is sensitive; the balance bar is used to provide a guiding function for the pressing process of the guiding core, and the pressing balance and the force balance are improved in the ultra-thin space. The balance function is enhanced, the balance effect is good, the stability is strong, and the overall stability is improved, so that the conduction function can be realized at any position of pressing the keycap, and is particularly suitable for the keyboard with ultra-thin space requirements.

The above is an overview of the novel technical solutions, and the present invention will be further described below in conjunction with the drawings and specific embodiments.

1‧‧‧Base

11‧‧‧ accommodating slots

111‧‧‧Front ribs

12‧‧‧ Ring groove

13‧‧‧ slots

2‧‧‧Key Cap

20‧‧‧balance frame

201‧‧‧Balance A

202‧‧‧Balance bar B

2011‧‧‧ Inserted shaft

2021‧‧‧ jack

2022‧‧‧Plunting column

3‧‧‧Conductance point A

30‧‧‧Installation board

301‧‧‧ rear ribs

4‧‧‧Connecting point B

5‧‧‧Conducting Elastomers

51‧‧‧Bottom bulge

6‧‧‧Guide

61‧‧‧Upper boss

62‧‧‧Circular card body

63‧‧‧guide shaft

7‧‧‧ cover

71‧‧‧Upper cover

72‧‧‧ Front hook piece

721‧‧‧Front hole

73‧‧‧ After the hook piece

731‧‧‧Back card hole

62‧‧‧Circular card body

63‧‧‧guide shaft

8‧‧‧Soft elastomer

81‧‧‧Flexible film

82‧‧‧Flexible guide column

9‧‧‧Spring A

10‧‧‧Spring B

Figure 1 is an exploded view of the first embodiment of the present invention.

Fig. 2 is a partial cross-sectional view showing a first embodiment of the present invention.

FIG. 3 is a schematic structural view of the first embodiment of the present invention.

Fig. 4 is an exploded view of the gimbal of the new embodiment.

Figure 5 is a schematic view showing the structure of a lead core according to the new embodiment.

Figure 6 is an exploded view of the second embodiment of the present invention.

Figure 7 is a partial cross-sectional view of the second embodiment of the present invention.

Figure 8 is an overall cross-sectional view of the second embodiment of the present invention.

Figure 9 is a schematic view showing the structure of the soft elastomer of the second embodiment.

Figure 10 is an exploded view of the third embodiment of the present invention.

Figure 11 is a partial cross-sectional view showing a third embodiment of the present invention.

Figure 12 is an overall cross-sectional view of the third embodiment of the present invention.

Figure 13 is an exploded view of the fourth embodiment of the present invention.

Figure 14 is a partial cross-sectional view showing a fourth embodiment of the present invention.

Figure 15 is a cross-sectional view of the fourth embodiment of the present invention

In order to further explain the technical means and effects of the present invention in order to achieve the intended purpose, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings and preferred embodiments.

Embodiment 1:

Referring to FIG. 1 to FIG. 5 , the present embodiment provides a high-balanced ultra-thin key switch, comprising a base 1 and a key cap 2 disposed on the base 1 , and an accommodation is disposed on the base 1 The slot 11 and the bottom of the accommodating slot 11 are provided with a conduction point A3 and a conduction point B4. In this embodiment, the push button switch further includes a conductive elastic body 5 disposed in the accommodating groove 11, a guiding core 6 disposed in the accommodating groove 11 and located above the conductive elastic body 5, and a set of a cover 7 disposed on the upper portion of the lead core 6 and covering the receiving groove 11, wherein the central portion of the conductive elastic body 5 is upwardly arched to form a pot bottom protrusion 51, and the conduction point A3 and the conductive elastic body 5 edge contact, the conduction point B4 is located below the pot bottom protrusion 51; by pressing down the lead core 6 and transmitting the pressing force to the pot bottom protrusion 51 in the middle of the conduction elastic body 5, the pot bottom protrusion 51 is deformed downwardly to be in contact with the conduction point B4 to achieve a conduction function, and the pot bottom protrusion 51 is rebounded by an elastic restoring force, the pot bottom protrusion 51 Separated from the conduction point B4 to realize the disconnection function.

In this embodiment, the conduction point A3 and the conduction point B4 extend out of the base 1 to facilitate connection with the PCB board; the conductive elastic body 5 is a pot piece, and the middle portion thereof is an upward pot-shaped protrusion. The edge of the conductive elastic body 5 is in contact with the conduction point A3. When the guiding core 6 is not pressed, the conduction point B4 is separated from the central portion of the conductive elastic body 5. When the guiding core 6 is pressed downward, the central portion of the conducting elastic body 5 is turned on. The upward arching position is in contact with the conduction point B4 to achieve conduction.

As shown in the second and fifth figures, the center of the guiding core 6 is upwardly arched, forming an upper boss 61 that moves up and down on the upper and lower end faces of the cover 7, and a ring extending outwardly from the lower end edge of the upper boss 61. The card body 62, wherein the ring body 62 is located under the cover 7, and a lower end of the upper boss 61 extends downwardly with a guide shaft 63 above the pan-like protrusion 51.

In the present embodiment, as shown in Fig. 2, the lower end of the annular card body 62 extends downward and is in contact with the upper end edge of the conductive elastic body 5.

In operation, the guiding core 6 is pressed downward, and the guiding shaft 63 at the lower end of the guiding core 6 is moved downward to act on the bottom protrusion 51 of the central portion of the conducting elastic body 5, and the bottom protrusion 51 is deformed downwardly. Contact with the conduction point B4 to realize the conduction function of the signal; and when the pressing of the guiding core 6 is released, the bottom protrusion 51 rebounds due to the elastic restoring force of the conducting elastic body 5 itself, and the bottom of the pan is convex The opening 51 is separated from the conduction point B4, and the guiding core 6 is driven to be reset to realize the disconnection function.

Meanwhile, as shown in the first, third, and fourth figures, in order to improve the balance of the press and the balance of the force, the conduction function can be achieved at any position of the keycap 2, and the embodiment is on the base 1. A ring groove 12 is disposed around the accommodating groove 11, and a balance frame 20 is disposed in the ring groove 12. The balance frame 20 includes a balance bar A201 and a balance bar B202 disposed on the periphery of the balance bar A201. And the balance bar A201 and the balance bar B 202 is a closed frame structure; the opposite outer sides of the balance bar A201 are respectively provided with a plug shaft 2011, and the opposite inner side edges of the balance bar B202 are respectively provided with inserts for inserting the plug shaft 2011 The hole 2021; at the same time, a pair of outer legs on one end of the balance bar B202 are respectively provided with a post 2022, and a slot 13 for inserting the post 2022 is opened on the base 1.

As shown in the first and second embodiments, a mounting plate 30 is disposed in the annular groove 12 and on the outer side of the receiving groove 11. The one end of the balance bar A201 is embedded in the mounting plate 30 and the receiving groove. 11 between the outer walls.

As shown in FIG. 2, a front rib 111 is outwardly protruded from the outer wall of the front end of the accommodating groove 11, and a rear rib 301 is protruded outwardly from the outer wall of the mounting plate 30. The cover 7 includes a cover. An upper cover sheet 71 coupled to the upper end of the accommodating groove 11 , a front lower hook piece 72 disposed at the front end of the upper cover piece 71 and having a front card hole 721 , and a rear cover piece 731 disposed at the rear end of the upper cover piece 71 and having a rear card hole 731 The front lower hook piece 73 is hooked on the front end of the accommodating groove 11 , and the front rib 111 is inserted into the front card hole 721 , and the rear lower hook piece 73 is hooked on the mounting plate 30 . The rear rib 301 is inserted into the rear hole 731, and one end of the balance bar A201 is limited to the bottom of the cover 7. The cover 7 serves to limit the guide core 6 and the conductive elastic body 5. The function in the accommodating groove 11.

Embodiment 2:

As shown in the sixth and ninth embodiments, the main difference between the embodiment and the first embodiment is that the lower end of the annular card body 62 is separated from the upper end edge of the conductive elastic body 5, and at the same time, in the accommodating groove 11 and A soft elastic body 8 is disposed between the guiding core 6 and the conductive elastic body 5. In the embodiment, the soft elastic body 8 may be a silicone rubber, and the soft elastic body 8 includes an M on the upper end surface of the conductive elastic body 5. The upper elastic films 81 and M are disposed at the center of the upper end of the elastic film 81 and are located at the elastic guide post 82 directly below the guide shaft 63; Pressing the guiding core 6 and transmitting the pressing force to the pan-like protrusion 51 in the middle of the conducting elastic body 5 through the soft elastic body 8, the pot-shaped protrusion 51 is deformed downwardly to be in contact with the conduction point B4. The conduction function is realized, and the pot bottom protrusion 51 is rebounded by the elastic restoring force of the soft elastic body 8, and the pot bottom protrusion 51 is separated from the conduction point B4 to realize the disconnection function. The central portion of the elastic backsheet 81 is arched upward, and the edge of the elastic backsheet 81 is in contact with the upper end edge of the conductive elastic body 5.

As shown in the second and eighth embodiments, since the soft elastic body 8 having the elastic guide post 82 is added to the pressing force for guiding the guiding core 6, the height of the guiding shaft 63 of the embodiment can be made. It is lower than the height of the guide shaft 63 of the first embodiment.

In this embodiment, by adding a soft elastic body 8 between the guiding core 6 and the conducting elastic body 5, not only the conductive elastic body 5 is protected, but also the force is transmitted to the guiding core 6, and the preloading is performed. The role of rebound.

In operation, the guiding core 6 is pressed downward, and the guiding shaft 63 at the lower end of the guiding core 6 is moved downward to the elastic guiding column 82 acting on the soft elastic body 8. When the pressing force is continuously pressed, the elastic negative film 81 is deformed and pressed. The pot bottom protrusion 51 in the middle of the elastic body 5 is turned on, and the pot bottom protrusion 51 is deformed downwardly to be in contact with the conduction point B4 to realize the conduction function of the signal; and when the pressing of the guide core 6 is released, Due to the elastic restoring force of the soft elastic body 8, the pot bottom protrusion 51 is separated from the conduction point B4, and the lead core 6 is driven to be reset to realize the disconnection function.

Embodiment 3:

As shown in the figures 10 to 12, the main difference between the embodiment and the first embodiment is that the lower end of the annular card body 62 is separated from the upper end edge of the conductive elastic body 5; meanwhile, in the receiving groove 11 and A spring A9 is disposed between the guiding core 6 and the conducting elastic body 5. The upper end of the spring A9 is sleeved on the outer periphery of the guiding shaft 63, and the lower end is located on the upper end surface of the conducting elastic body 5. The guiding core 6 is pressed downward. And passing the pressure to the spring through the spring A9 The pot bottom protrusion 51 in the middle of the elastic body 5 is turned on, and the pot bottom protrusion 51 is deformed downwardly to be in contact with the conduction point B4 to realize a conduction function, and the bottom of the pot is raised by the elastic restoring force of the spring A9. 51 rebound, the pot bottom protrusion 51 is separated from the conduction point B4, and the disconnection function is realized.

In this embodiment, a spring A9 is added between the guiding core 6 and the conducting elastic body 5 to provide a function of transmitting force, preloading and rebounding the guiding core 6.

In operation, the guiding core 6 is pressed downward, and the guiding shaft 63 at the lower end of the guiding core 6 is moved downward to act on the spring A9, and the spring A9 is compressed and acts on the bottom protrusion 51 of the central portion of the conducting elastic body 5, the bottom of the pot The protrusion 51 is deformed downwardly to be in contact with the conduction point B4 to achieve a conduction function of the signal; and when the pressing of the core 6 is released, the spring is rebound due to the elastic restoring force of the spring A9, the bottom of the pot The protrusion 51 is separated from the conduction point B4, and the core 6 is driven to be reset to realize the disconnection function.

Embodiment 4:

As shown in the figures 13 to 15, the main difference between the embodiment and the second embodiment is that a spring B10 is disposed in the accommodating groove 11 and between the guiding core 6 and the soft elastic body 8. The upper end of the B10 is sleeved on the outer periphery of the guide shaft 63, and the lower end is sleeved on the outer periphery of the elastic guide post 82; by pressing the lead core 6 downward, and transmitting the pressing force to the middle of the conductive elastic body 5 through the soft elastic body 8. a pot bottom protrusion 51, the pot bottom protrusion 51 is deformed downwardly to be in contact with the conduction point B4 to achieve a conduction function, and the pot bottom protrusion 51 is rebounded by the elastic restoring force of the spring B10, the bottom of the pot The protrusion 51 is separated from the conduction point B4 to achieve a disconnect function.

As shown in Figs. 12 and 15, since the spring B10 is added in the present embodiment with the soft elastic body 8, the height of the spring B10 can be made lower than that of the third spring A9 of the embodiment. .

In this embodiment, the soft elastic body 8 is combined with the spring B10, and the soft elastic body 8 functions to protect the conductive elastic body 5, and transmits the force to the guiding core 6. The spring B10 functions as a preloading and rebounding. The function.

In operation, the guiding core 6 is pressed downward, and the guiding shaft 63 at the lower end of the guiding core 6 is moved downward to act on the elastic guiding column 82 on the soft elastic body 8, while the spring B10 is compressed, and the elastic force is continuously pressed. The bottom plate 81 deforms and presses the bottom protrusion 51 of the middle of the conductive elastic body 5, and the bottom protrusion 51 is deformed downwardly concavely, and then contacts the conduction point B4 to realize the conduction function of the signal; When the core 6 is pressed, it rebounds due to the elastic restoring force of the spring B10, and the pan-shaped protrusion 51 is separated from the conduction point B4, and the lead core 6 is driven to be reset to realize the disconnection function.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention. Therefore, other structures obtained by the same or similar technical features as the above-described embodiments of the present invention are all in the present invention. Within the scope of protection.

Claims (10)

A high-balanced ultra-thin key switch includes a base and a key cap disposed on the base, a receiving groove is disposed on the base, and a conduction point A is disposed at a bottom of the receiving groove And a conductive point B, further comprising: a conductive elastic body disposed in the receiving groove, a guiding core disposed in the receiving groove and located above the conductive elastic body, and a set of the guiding core a cover of the upper portion of the lead core and covering the receiving groove, wherein the central portion of the conductive elastic body is upwardly arched to form a bottom protrusion, and the conduction point A is in contact with the edge of the conductive elastic body, and the conduction point B is located The bottom of the pot is below the bottom; the bottom of the pot is pressed downward, and the pressing force is transmitted to the bottom protrusion of the middle of the conducting elastic body, and the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B. The conduction function is realized, and the bottom protrusion of the pot is rebounded by the elastic restoring force, and the bottom protrusion of the pot is separated from the conduction point B to realize the disconnection function. According to the high-balanced ultra-thin key switch of claim 1, the center of the lead core is upwardly arched to form an upper boss that moves up and down on the upper and lower end faces of the cover and an outer edge of the upper boss and is outwardly An extended annular card body, wherein the annular card body is limited to the underside of the cover, and a lower end of the upper boss extends downwardly with a guiding shaft located above the bottom protrusion of the pan. According to the high-balanced ultra-thin key switch of claim 2, the lower end of the annular card body extends downward and is in contact with the upper end edge of the conductive elastic body. According to the high-balanced ultra-thin key switch of claim 2, a soft elastic body is disposed in the accommodating groove and between the lead core and the conductive elastic body, and the soft elastic body includes a conductive An elastic negative film on the upper end surface of the elastic body and an elastic guiding column disposed at a central position of the upper end of the elastic negative film and located directly under the guiding shaft; by pressing the guiding core downwardly, and transmitting the pressing force through the soft elastic body The bottom portion of the bottom portion of the elastic body is turned, and the bottom protrusion of the pot is deformed downwardly to be in contact with the conduction point B to realize a conduction function, and the bottom of the pot is raised by the elastic restoring force of the soft elastic body. The bottom of the pot is separated from the conduction point B to realize the disconnection function. According to the high-balanced ultra-thin key switch of claim 4, the middle portion of the elastic film is upwardly arched, and the edge of the elastic film is in contact with the edge of the upper end surface of the conductive elastic body. According to the high-balanced ultra-thin key switch of claim 2, a spring A is disposed in the accommodating groove and between the lead core and the conductive elastic body, and the upper end of the spring A is sleeved on the guide To the periphery of the shaft, the lower end is located on the upper end surface of the conductive elastic body; by pressing the guiding core downward, and transmitting the pressing force to the bottom of the conductive elastic body by the spring A, the bottom protrusion of the pot is deformed The bottom surface is recessed and brought into contact with the conduction point B to realize the conduction function, and the bottom-like protrusion of the pot is rebounded by the elastic restoring force of the spring A, and the bottom protrusion of the pot is separated from the conduction point B to realize the disconnection function. According to the high-balanced ultra-thin key switch of claim 4, a spring B is disposed in the receiving groove and between the guiding core and the soft elastic body, and the upper end of the spring B is sleeved on the guiding shaft a peripheral portion, the lower end is sleeved on the outer periphery of the elastic guiding column; and the bottom of the conductive elastic body is transmitted to the bottom of the conductive elastic body by pressing the guiding core downward, and the bottom protrusion of the pot is deformed The concave portion is in contact with the conduction point B to realize the conduction function, and the bottom protrusion of the pan is rebounded by the elastic restoring force of the spring B, and the bottom protrusion of the pan is separated from the conduction point B to realize the disconnection function. The high-balanced ultra-thin key switch according to any one of claims 1 to 7, wherein a ring groove is disposed on the base and around the accommodating groove, and a balance frame is disposed in the ring groove. The balance frame includes a balance bar A and a balance bar B disposed on the periphery of the balance bar A, and the balance bar A and the balance bar B are closed frame structures; opposite outer sides of the balance bar A Each of the two inner sides of the balance bar B is respectively provided with a jack for inserting the plug shaft; and at the same time, one of the opposite outer side edges of one end of the balance bar B is respectively disposed. A post, on which a slot for the insertion of the post is opened. According to the high-balanced ultra-thin key switch of claim 8, a mounting plate is disposed in the annular groove and on the outer side of the receiving groove, and one end of the balance bar A is embedded in the mounting plate and the mounting plate Between the outer walls of the receiving groove. According to the high-balanced ultra-thin key switch of claim 9, a front rib is protruded outwardly from the outer wall of the front end of the accommodating groove, and a rear rib is convexly disposed on the outer wall of the mounting plate; The cover includes an upper cover sheet covering the upper end of the accommodating groove, a front lower hook piece provided at the front end of the upper cover piece and having a front card hole, and a rear lower hook provided at the rear end of the upper cover piece and having a rear card hole a front hook piece is hooked on the front end of the receiving groove, and the front bead is inserted into the front card hole, and the rear lower hook piece is hooked on the outer wall of the mounting plate, and the rear bead is inserted into the piece In the rear card hole, one end of the balance bar A is limited to the bottom of the cover.