CN105788924A - Key structure - Google Patents

Abstract

The invention relates to a key structure, which includes a key cap, a bottom plate, an elastic body, a membrane switch circuit, a first and a second support seat and a first and a second metal support. The first and second supporting bases are arranged on the bottom plate and have first and second side walls respectively. The first and second pressing parts of the first and second metal supporting parts are connected to the keycap, and are rotatably connected to the first and second side walls by the first and second L-shaped bending parts respectively. When the keycap is pressed, the keycap presses the first and second pressing parts downward from the unpressed position, driving the first and second metal supports to rotate around the first and second side walls respectively, and the first and second The first and second supporting parts of the two metal supporting parts support each other and rotate in unison. When the keycap is released, the elastic body provides an upward restoring force to drive the keycap back to the unpressed position. The button structure of the present invention can facilitate the thinning of the button structure through the arrangement of the thinner first metal support member and the second metal support member.

Description

key structure

technical field

The invention relates to a key structure, in particular to a thin key structure.

Background technique

With the popularization of electronic devices, various input devices are widely used and become a medium for communication between users and electronic devices. Thinning of electronic devices has also become one of the current trends in the industry. In response to this trend, thinning the input device is also one of the directions that researchers are striving to pursue.

Taking a push-operated input device as an example, the traditional key structure uses a supporting structure made of plastic to support the key cap. However, such a support structure requires a large height space, which is not conducive to thinning the input device.

Contents of the invention

In order to meet the requirement of thinning the above-mentioned key structure, the present invention provides a key structure.

The above button structure includes:

keycap;

the bottom plate is arranged under the keycap;

an elastic body disposed between the keycap and the bottom plate, the elastic body provides an upward restoring force to the keycap;

The membrane switch circuit is arranged on the bottom plate, and the membrane switch circuit is used to generate a key signal when triggered;

The first support seat and the second support seat, the first support seat and the second support seat are arranged on the bottom plate, the first support seat has a first side wall, and there is a first support seat between the first support seat and the bottom plate. Storage space, the second support base has a second side wall, and there is a second storage space between the second support base and the bottom plate;

The first metal supporting part includes a first pressing part, a first L-shaped bending part and a first support part, the first pressing part is connected to the keycap, and the first L-shaped bending part abuts against the first supporting part. a side wall, and extends into the first receiving space, so that the first metal support member is rotatably connected to the first support seat; and

The second metal support includes a second pressing part, a second L-shaped bending part and a second support part, the second pressing part is connected to the keycap, and the second L-shaped bending part abuts against the first two side walls, and extend into the second storage space, so that the second metal support member is rotatably connected to the second support seat, and the second support portion is connected to the first support portion;

Wherein, when the keycap is pressed by an external force, the keycap presses the first pressing part and the second pressing part downwards from the unpressed position, driving the first metal support part and the second metal support part respectively Rotate around the first side wall and the second side wall, and the first support part and the second support part support each other and rotate in conjunction;

Wherein, when the external force is released, the elastic body provides the upward restoring force to drive the keycap to return to the unpressed position.

As an optional technical solution, the first support seat and the second support seat each include a plurality of protruding posts, and the plurality of protruding posts extend downward from the lower surfaces of the first support seat and the second support seat, so as to fixed with the bottom plate.

As an optional technical solution, when the keycap is pressed from the unpressed position to the pressed position, the first metal support and the second metal support are parallel to the lower surface of the keycap.

As an optional technical solution, when the keycap is pressed from the unpressed position to the pressed position, the upper surfaces of the first metal support and the second metal support are attached to the lower surface of the keycap.

As an optional technical solution, the keycap includes a first hook and a second hook, the first pressing part has a first hook opening, the second pressing part has a second hook opening, and the first pressing part has a first hook opening. The hook and the second hook respectively enter the first hook opening and the second hook opening, and abut against the lower surface of the first metal support and the lower surface of the second metal support respectively. surface.

As an optional technical solution, the membrane switch circuit also has a first hook channel and a second hook channel. When the keycap is pressed from the unpressed position to the pressed position, the first hook and the second The hooks respectively enter the first hook channel and the second hook channel.

As an optional technical solution, the membrane switch circuit further includes a recessed portion, and when the keycap is at the unpressed position, the recessed portion accommodates the first supporting portion and the second supporting portion.

As an optional technical solution, the membrane switch circuit also has a first accommodating hole and a second accommodating hole, the first L-shaped bent portion passes through the first accommodating hole, and the second L-shaped bent portion passes through the second receiving hole.

As an optional technical solution, the button structure further includes a light guide plate, and the light guide plate is arranged on the membrane switch circuit.

As an optional technical solution, the light guide plate has a first light guide plate through hole and a second light guide plate through hole, the first accommodation hole and the first light guide plate through hole form the first storage space, and the first L-shaped The bending part is accommodated in the first receiving space, and the second receiving hole and the second light guide plate through hole form the second receiving space, and the second L-shaped bending part is accommodated in the second receiving space middle.

The present invention also provides a button structure, including:

A keycap, the keycap has a first hook and a second hook, the first hook has a first hook column and a first hook tail, the second hook has a second hook column and a second hook The hook tail, the first hook tail and the second hook tail both extend towards the X-axis direction;

the bottom plate is arranged under the keycap;

an elastic body disposed between the keycap and the bottom plate, the elastic body provides an upward restoring force to the keycap;

a membrane switch circuit, arranged on the bottom plate, the membrane switch circuit is used to be triggered to generate a key signal;

A first support seat and a second support seat, the first support seat and the second support seat are arranged on the bottom plate, the first support seat has a first pivot shaft, and the second support seat has a second pivot shaft , the first pivot axis and the second pivot axis are parallel to the X-axis direction;

The first metal support member includes a first hook opening, a first L-shaped bending portion and a first support portion, the first hook column enters the first hook opening, and the first hook tail Abutting against the lower surface of the first metal support, the first L-shaped bent portion abuts against the first pivot shaft, so that the first metal support is rotatably connected to the first support seat; and

The second metal support includes a second hook opening, a second L-shaped bending portion and a second supporting portion, the second hook column enters the second hook opening, and the second hook tail abutting against the lower surface of the second metal support, the second L-shaped bent portion abuts against the second pivot shaft, so that the second metal support is rotatably connected to the second support seat, and the second supporting portion is connected to the first supporting portion;

Wherein, when the keycap is pressed by an external force, the keycap presses the first hook opening and the second hook opening downward from the unpressed position, driving the first metal support and the second The metal support member rotates around the first pivot shaft and the second pivot shaft respectively, and the first supporting part and the second supporting part support each other and rotate in conjunction;

Wherein, when the external force is released, the elastic body provides the upward restoring force to drive the keycap to return to the unpressed position, and then drives the first metal supporting part and the second metal supporting part to rotate.

As an optional technical solution, the first pivot shaft and the second pivot shaft respectively include a first side wall and a second side wall, the first L-shaped bending part is pivotally connected to the first side wall, the The second L-shaped bent portion is pivotally connected to the second side wall.

As an optional technical solution, when the keycap is pressed from the unpressed position to the pressed position, the first metal support member rotates around the first side wall with the first pivot shaft as a fulcrum, and the second The metal supporting member rotates around the second side wall with the second pivot shaft as a fulcrum.

As an optional technical solution, when the keycap is pressed from the unpressed position to the pressed position, the first metal support and the second metal support are parallel to the lower surface of the keycap.

As an optional technical solution, when the keycap is pressed from the unpressed position to the pressed position, the upper surfaces of the first metal support and the second metal support are attached to the lower surface of the keycap.

As an optional technical solution, the membrane switch circuit also has a first hook channel and a second hook channel. When the keycap is pressed from the unpressed position to the pressed position, the first hook and the second The hooks respectively enter the first hook channel and the second hook channel.

As an optional technical solution, the membrane switch circuit further includes a recessed portion, and when the keycap is at the unpressed position, the recessed portion accommodates the first supporting portion and the second supporting portion.

As an optional technical solution, the button structure further includes a light guide plate, and the light guide plate is arranged on the membrane switch circuit.

As an optional technical solution, the light guide plate has a first hook guide hole and a second hook guide hole. When the keycap is pressed from the unpressed position to the pressed position, the first hook and the second hook The hooks respectively enter the first hook guide hole and the second hook guide hole.

Compared with the prior art, the button structure of the present invention is provided with the first metal support and the second metal support. Since the rigidity of the metal material is better, and the support made of metal is thinner, it can It is beneficial to the application of thin key structure.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

Description of drawings

FIG. 1A is an exploded view of a button structure according to an embodiment of the present invention;

FIG. 1B is an exploded view of another viewing angle of the button structure of FIG. 1A;

FIG. 2A is an assembled bottom view of the keycap and metal support of FIG. 1A;

Fig. 2B is an X-Y plane sectional view of the button structure of Fig. 1A along the tangent line 2B-2B';

FIG. 3 is an assembly diagram of other structures below the keycap of FIG. 1A;

Fig. 4A is a Y-Z plane sectional view along the tangent 4A-4A' when the keycap of Fig. 1A is in an unpressed position;

Fig. 4B is a cross-sectional view of the X-Y plane along the tangent 4B-4B' when the keycap of Fig. 1A is in the unpressed position;

Fig. 5 is a sectional view of the Y-Z plane along the line 4A-4A' when the keycap of Fig. 1A is in the pressed position.

detailed description

The present invention proposes a key structure, however, the present invention is not limited to the proposed embodiment. The descriptions in the embodiments, such as the detailed structure, the number of structures, the size and position of related components, and the corresponding spatial relationship, etc., are for illustrative purposes only, and are not intended to limit the scope of protection of the present invention. Therefore, the present invention does not show all possible embodiments, and those skilled in the art can change and modify the structures of the embodiments without departing from the spirit and scope of the present disclosure, so as to meet the needs of practical applications. Therefore, the present invention is not limited to the following embodiments, but can be implemented in various forms, and other embodiments not presented in the present invention may also be applicable. Furthermore, the size ratios in the drawings are not drawn according to the same proportion of the actual product, so the description and the contents of the drawings are only used for describing the embodiments, not for limiting the protection scope of the present invention. In addition, in the specification, similar component symbols are used for similar component symbols for convenience of description.

FIG. 1A is an exploded view of a button structure according to an embodiment of the present invention; FIG. 1B is an exploded view of another viewing angle of the button structure in FIG. 1A , please refer to FIG. 1A and FIG. 1B . The key structure 100 includes a keycap 110 , a first metal support 120 , a second metal support 130 , a first support 140 , a second support 150 , a membrane switch circuit 170 , an elastic body 180 and a bottom plate 190 . The bottom plate 190 can be disposed under the keycap 110 . The elastic body 180 can be disposed between the keycap 110 and the bottom plate 190 . The membrane switch circuit 170 can be disposed on the base plate 190 . The first supporting base 140 and the second supporting base 150 can be disposed on the bottom plate 190 . In addition, if applied to a luminous input device, the key structure 100 may further include a light guide plate 160 disposed on the membrane switch circuit 170 ; of course, the light guide plate 160 may not be provided in another embodiment.

The keycap 110 includes a first hook 112 and a second hook 114 . The first metal support 120 includes a first pressing portion 121, a first L-shaped bending portion 125, and a first supporting portion 123. The first pressing portion 121 and the first supporting portion 123 are located along the Z side opposite side of the axis. The second metal support 130 includes a second pressing portion 131, a second L-shaped bending portion 135, and a second supporting portion 133. The second pressing portion 131 and the second supporting portion 133 are located opposite side of the axis. The first supporting portion 123 can be connected to the second supporting portion 133 . For example, the first support part 123 and the second support part 133 may each include two extension parts, and the two extension parts of the first support part 123 may respectively overlap with the two extension parts of the second support part 133 up and down. It is set so that the first support part 123 and the second support part 133 can support each other and rotate in unison.

The first pressing part 121 and the second pressing part 131 can be connected to the keycap 110 and can be used for receiving the pressing of the keycap 110 . FIG. 2A is an assembled bottom view of the keycap and the metal support in FIG. 1A , please refer to FIG. 1A and FIG. 2A . The first pressing part 121 can have a first hook opening 122 , and the second pressing part 131 can have a second hook opening 132 . The first hook opening 122 and the second hook opening 132 can be configured corresponding to the positions of the first hook 112 and the second hook 114 . As shown in FIG. 2A, when the keycap 110 is assembled on the first metal support 120 and the second metal support 130, the first hook 112 and the second hook 114 can enter the first hook opening 122 and the second hook respectively. The two hook holes 132 abut against the lower surface 120LS of the first metal support 120 and the lower surface 130LS of the second metal support 130 respectively.

As shown in FIG. 2A , the first hook 112 may have a first hook post 1121 and a first hook tail 1122 , and the second hook 114 may have a second hook post 1141 and a second hook tail 1142 . Wherein, both the first hook tail 1122 and the second hook tail 1142 extend toward the X-axis direction. When the keycap 110 is assembled on the first metal support 120 and the second metal support 130, the first hook post 1121 and the second hook post 1141 enter the first hook opening 122 and the second hook opening respectively. 132 in.

Fig. 2B is an X-Y plane sectional view of the button structure in Fig. 1A along the line 2B-2B'. As shown in FIG. 2B , the second hook tail 114 abuts against the lower surface 130LS of the second metal support 130 . Similarly, the first hook tail 1122 on the other side along the Z-axis also abuts against the lower surface 120LS of the first metal support 120 . In this way, through the above-mentioned design of the first hook post 1121, the second hook post 1141, the first hook tail 1122, and the second hook tail 1142, the keycap 110 can be prevented from falling off to the metal support 120, 130 outside.

FIG. 3 is an assembly diagram of other structures under the keycap in FIG. 1A , please refer to FIG. 3 . The first metal support member 120 is rotatably connected to the first support base 140 with the first rotation axis S1 as the fulcrum, and the second metal support member 130 is rotatably connected to the second support base 150 with the second rotation axis S2 as the fulcrum. Wherein, both the first rotation axis S1 and the second rotation axis S2 are parallel to the X-axis direction. Through the rotation of the first metal support 120 and the second metal support 130 with the first rotating shaft S1 and the second rotating shaft S2 as fulcrums respectively, the keycap 110 (not shown) can be driven between the unpressed position and the pressed position move.

Specifically, as shown in FIG. 1A and FIG. 1B , the first support base 140 may have a first pivot shaft 145, the second support base 150 may have a second pivot shaft 155, and the first pivot shaft 145 and the second The pivot shafts 155 are all parallel to the X-axis direction. The first L-shaped bent portion 125 of the first metal support 120 abuts against the first pivot shaft 145 , so that the first metal support 120 is rotatably connected to the first support base 140 . The second L-shaped bent portion 135 of the second metal support 130 abuts against the second pivot shaft 155 , so that the second metal support 130 is rotatably connected to the second support base 150 .

4A is a Y-Z plane sectional view of the keycap of FIG. 1A along the tangent line 4A-4A' when it is in the unpressed position. Please refer to FIG. There is a second side wall 150w. The first L-shaped bent portion 125 abuts against the first side wall 140w, and the first side wall 140w may be, for example, an arc-shaped surface. Thereby, the first L-shaped bending portion 125 can be pivotally connected to the first pivot shaft 145 along the arc surface of the first side wall 140w, so that the first metal support member 120 can use the first pivot shaft 145 as a fulcrum Rotate around the first side wall 140w. Likewise, the second L-shaped bent portion 135 abuts against the second side wall 150w, and the second side wall 150w may be, for example, an arc-shaped surface. Thereby, the second L-shaped bending portion 135 can be pivotally connected to the second pivot shaft 155 along the arc surface of the second side wall 150w, so that the second metal support member 130 can use the second pivot shaft 155 as a fulcrum Rotate around the second side wall 150w.

In this embodiment, the first supporting base 140 , the second supporting base 150 and the bottom plate 190 can be combined and fixed without relative displacement. Accordingly, when the first metal support 120 and the second metal support 130 rotate around the first side wall 140w and the second side wall 150w respectively, the keycap 110 can move up and down relative to the bottom plate 190 . For example, please refer to FIG. 1B and FIG. 4A, the first supporting seat 140 may include several bosses 141, the second supporting seat 150 may include several bosses 151, and the bosses 141 and the bosses 151 are all supported from the first support. The lower surfaces of the seat 140 and the second support seat 150 extend downwards (for example, extend in the direction of the negative Y-axis) to be fixed with a plurality of post holes 191 on the bottom plate 190 . In another embodiment, the protrusions 141 , 151 can be combined and fixed with the corresponding protrusion through holes 191 by heat fusion.

Please refer to the enlarged view of the area E in FIG. 4A, there may be a first storage space R1 between the first support seat 140 and the bottom plate 190, and the first L-shaped bending portion 125 extends into the first storage space R1, and can be in the first storage space R1. In a storage space, R1 rotates along the first side wall 140w. Similarly, there may also be a second storage space (not shown) between the second support base 150 and the bottom plate 190, and the second L-shaped bending portion 135 extends into the second storage space, and can be placed in the second storage space Rotate along the second side wall 150w. Through the arrangement of the above-mentioned first storage space and the second storage space, the overall required space of the button structure 100 can be effectively reduced, so as to facilitate the application of thinning.

For details, please refer to FIG. 1A and the enlarged view of the area E in FIG. 4A . As shown in FIG. 1A , the membrane switch circuit 170 can also have a first receiving hole 175 and a second receiving hole 176 . In addition, if the key structure 100 includes a light guide plate 160 , the light guide plate 160 may also have a first light guide plate through hole 165 and a second light guide plate through hole 166 . The first receiving hole 175 and the first light guide plate through hole 165 correspond to the position of the first L-shaped bending portion 125, and the second receiving hole 176 and the second light guide plate through hole 166 correspond to the position of the second L-shaped bending portion 135. Location. As shown in the enlarged view of the region E of FIG. 4A , the first L-shaped bent portion 125 can pass through the first receiving hole 175 and the first through hole 165 of the light guide plate. That is, the first receiving space R1 can be formed by the first receiving hole 175 and the first through hole 165 of the light guide plate, so that the first L-shaped bending portion 125 can be accommodated in the first receiving space R1. Similarly, the second L-shaped bending portion 135 can pass through the second receiving hole 176 and the second light guide plate through hole 166 , so that the second L-shaped bending portion 135 can be accommodated in the second receiving space.

FIG. 4B is a cross-sectional view of the X-Y plane along the line 4B-4B' when the keycap of FIG. 1A is in the unpressed position, please refer to FIG. 4A and FIG. 4B. As shown in FIG. 4A , the keycap 110 is kept at the unpressed position by the upward restoring force provided by the elastic body 180 . As shown in FIG. 4B , the keycap 110 may have a protruding point 116 , and when the keycap 110 is in the unpressed position, the protruding point 116 abuts against the elastic body 180 . In this case, the first hook 112 and the second hook 114 lift the first pressing part 121 and the second pressing part 131 upwards, and the first supporting part 123 and the second supporting part 133 on the other side It is accommodated in the recessed portion 171 of the membrane switch circuit board 170 .

FIG. 5 is a sectional view of the Y-Z plane along the line 4A-4A' when the keycap of FIG. 1A is in the pressed position, please refer to FIG. 5 . When the keycap 110 is pressed by an external force, and the external force can overcome the upward restoring force provided by the elastic body 180 (for example, when the user presses the keycap 110), the keycap 110 moves from the unpressed position shown in FIG. Move down to the pressing position shown in FIG. 5 , at this time, the bump 116 can touch the elastic body 180 to deform the elastic body 180 , and then trigger the membrane switch circuit 170 to generate a corresponding key signal. When the keycap 110 presses down on the first pressing part 121 and the second pressing part 131, the first metal supporting part 120 and the second metal supporting part 130 are driven and respectively around the first side wall 140w (or the first pivot connecting shaft 145) and the second side wall 150w (or the second pivot shaft 155) rotate, and the first supporting part 123 and the second supporting part 133 mutually support upwards and rotate together, so that the first supporting part 123 and the second supporting portion 133 move upward away from the recessed portion 171 .

As shown in FIG. 5 , when the keycap 110 is pressed to the pressed position, the first metal support 120 and the second metal support 130 are parallel to the lower surface 110LS of the keycap 110 . More specifically, the upper surface 120US of the first metal support 120 and the upper surface 130US of the second metal support 130 are attached to the lower surface 110LS of the keycap 110 . Therefore, in the pressed position, the inner space of the key cap 110 can also be accommodated, thereby reducing the overall thickness of the key structure 100 .

Please refer to FIG. 1A and FIG. 5 at the same time, the membrane switch circuit 170 has a first hook channel 172 and a second hook channel 174 . In addition, if the button structure 100 includes a light guide plate 160 , the light guide plate 160 may also have a first hook guide hole 162 and a second hook guide hole 164 . When the keycap 110 is in the pressed position, the first hook 112 can enter the first hook channel 172 and the first hook guide hole 162, and the second hook 114 can enter the second hook channel 174 and the second hook In the guide hole 164. Since both the membrane switch circuit 170 and the light guide plate 160 have passages for the first hook 112 and the second hook 114 to pass through, more travel space for the keycap can be provided, and the overall required usage of the key structure 100 can be effectively reduced. space, in order to facilitate thin applications.

When the user no longer presses the keycap 110, the keycap 110 is no longer restricted by external force, so the keycap 110 can return upward from the pressed position in FIG. 5 to the position shown in FIG. 4A and FIG. Unpressed position of 4B. At the same time, since the keycap 110 returns upward, the first hook 112 and the second hook 114 drive the first pressing part 121 and the second pressing part 131 to lift upward, so that the first metal support 120 and the second metal The supporting member 130 rotates with the first pivot shaft 145 and the second pivot shaft 155 as fulcrums respectively, and then the first supporting part 123 and the second supporting part 133 on the other side support each other downward and rotate in unison. , and is accommodated in the recessed portion 171, as shown in FIG. 4A.

As described above, the key structure proposed by the present invention can be applied to an input device, such as a keyboard, especially a thinner keyboard. In actual application, the key structure can be controlled in size according to requirements, and arranged to form a keyboard. In addition, the key structure proposed by the present invention can also be applied to an input device that can emit light.

In summary, the button structure of the present invention is provided with the first metal support and the second metal support, since the rigidity of the metal material is better, and the support made of metal is thinner, it can be beneficial Application of thin button structure. Secondly, since the L-shaped bent portions of the first metal support and the second metal support extend into the storage space between the corresponding support seat and the bottom plate, and abut against the side walls of the corresponding support seat respectively, the first The metal supporting part and the second metal supporting part can rotate relative to the corresponding supporting seat through the L-shaped bending part, thereby restricting the keycap to move straight up and down relative to the bottom plate. When the keycap is pressed to the pressed position, the internal space of the keycap can also be used for accommodating components under the keycap, so that the space can be effectively used. In addition, since both the membrane switch circuit and the light guide plate have passages for the hooks on the keycaps to pass through, more travel space for the keycaps can be provided, and the space required for the overall key structure can be effectively reduced to facilitate thinness. application.

Certainly, the present invention also can have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the scope of protection of the appended claims of the present invention.

Claims (19)

1. a press-key structure, it is characterised in that this press-key structure includes:

Keycap；

Base plate, is arranged under this keycap；

Elastomer, is arranged between this keycap and this base plate, this elastomer provide upwards restoring force to this keycap；

Film switch circuit, is arranged on this base plate, produces keying signal when this film switch circuit is in order to be triggered；

First supporting seat and the second supporting seat, this first supporting seat and this second supporting seat are arranged on this base plate, this first supporting seat has the first side wall, between this first supporting seat and this base plate, there is the first accommodation space, this second supporting seat has the second sidewall, has the second accommodation space between this second supporting seat and this base plate；

First metallic supports, it is supported by portion including the first press section, the first L-shaped kink and first, this first press section is connected to this keycap, this the first L-shaped kink is connected to this first side wall, and extend in this first accommodation space, make this first metallic supports be rotatably connected at this first supporting seat；And

Second metallic supports, it is supported by portion including the second press section, the second L-shaped kink and second, this second press section is connected to this keycap, this the second L-shaped kink is connected to this second sidewall, and extend in this second accommodation space, make this second metallic supports be rotatably connected at this second supporting seat, and this second portion of being supported by is connected to this and first is supported by portion；

Wherein, when this keycap is pressed by external force, this keycap never pressing position compresses downwards this first press section and this second press section, drive this first metallic supports and this second metallic supports to rotate respectively around this first side wall and this second sidewall, and this first is supported by portion and this second portion of being supported by and mutually supports and interlock rotation；

Wherein, when this external force discharges, this elastomer provide this upwards restoring force to drive this keycap to return back to this non-pressing position.

2. press-key structure as claimed in claim 1, it is characterised in that this first supporting seat and this second supporting seat all include a plurality of projection, and these a plurality of projections downwardly extend from the lower surface of this first supporting seat and this second supporting seat, to fix with this base plate.

3. press-key structure as claimed in claim 1, it is characterised in that when this keycap is pressed into pressing position from this non-pressing position, this first metallic supports and this second metallic supports are parallel to the lower surface of this keycap.

4. press-key structure as claimed in claim 1, it is characterised in that when this keycap is pressed into pressing position from this non-pressing position, the upper surface of this first metallic supports and this second metallic supports fits in the lower surface of this keycap.

5. press-key structure as claimed in claim 1, it is characterized in that, this keycap includes the first snap fit and the second snap fit, this first press section has the first snap fit perforate, this second press section has the second snap fit perforate, this first snap fit and this second snap fit respectively enter in this first snap fit perforate and this second snap fit perforate, and are connected to the lower surface of this first metallic supports and the lower surface of this second metallic supports respectively.

6. press-key structure as claimed in claim 5, it is characterized in that, this film switch circuit also has the first snap fit passage and the second snap fit passage, when this keycap is pressed into pressing position from this non-pressing position, this first snap fit and this second snap fit respectively enter in this first snap fit passage and this second snap fit passage.

7. press-key structure as claimed in claim 1, it is characterised in that this film switch circuit also includes depressed part, when this keycap is positioned at this non-pressing position, this depressed part is received this and first is supported by portion and this second is supported by portion.

8. press-key structure as claimed in claim 1, it is characterised in that this film switch circuit also has the first accommodation hole and second and holds hole, this first L-shaped kink through this first hold hole, and this second L-shaped kink second hold hole through this.

9. press-key structure as claimed in claim 8, it is characterised in that this press-key structure also includes light guide plate, and this light guide plate is arranged on this film switch circuit.

10. press-key structure as claimed in claim 9, it is characterized in that, this light guide plate has the first light guide plate perforation and the second light guide plate perforation, this the first accommodation hole and this first light guide plate perforation form this first accommodation space, this the first L-shaped kink is placed in this first accommodation space, and this second accommodation hole and this second light guide plate perforation form this second accommodation space, this second L-shaped kink is placed in this second accommodation space.

11. a press-key structure, it is characterised in that this press-key structure includes:

Keycap, this keycap has the first snap fit and the second snap fit, and this first snap fit has the first snap fit post and the first snap fit tail, and this second snap fit has the second snap fit post and the second snap fit tail, this first snap fit tail and this second snap fit tail and all extends towards X-direction；

Base plate, is arranged under this keycap；

Elastomer, is arranged between this keycap and this base plate, this elastomer provide upwards restoring force to this keycap；

Film switch circuit, is arranged on this base plate, and this film switch circuit produces keying signal in order to be triggered；

First supporting seat and the second supporting seat, this first supporting seat and this second supporting seat are arranged on this base plate, and this first supporting seat has the first drive-connecting shaft, and this second supporting seat has the second drive-connecting shaft, and this first drive-connecting shaft and this second drive-connecting shaft are parallel to this X-direction；

First metallic supports, it is supported by portion including the first snap fit perforate, the first L-shaped kink and first, this the first snap fit post enters in this first snap fit perforate, this the first snap fit tail is connected to the lower surface of this first metallic supports, this the first L-shaped kink is connected to this first drive-connecting shaft, makes this first metallic supports be rotatably connected at this first supporting seat；And

Second metallic supports, it is supported by portion including the second snap fit perforate, the second L-shaped kink and second, this the second snap fit post enters in this second snap fit perforate, this the second snap fit tail is connected to the lower surface of this second metallic supports, this the second L-shaped kink is connected to this second drive-connecting shaft, make this second metallic supports be rotatably connected at this second supporting seat, and this second portion of being supported by is connected to this and first is supported by portion；

Wherein, when this keycap is pressed by external force, this keycap never pressing position compresses downwards this first snap fit perforate and this second snap fit perforate, drive this first metallic supports and this second metallic supports to rotate respectively around this first drive-connecting shaft and this second drive-connecting shaft, and this first is supported by portion and this second portion of being supported by and mutually supports and interlock rotation；

Wherein, when this external force discharges, this elastomer provide this upwards restoring force to drive this keycap to return back to this non-pressing position, and then drive this first metallic supports to rotate with this second metallic supports.

12. press-key structure as claimed in claim 11, it is characterised in that this first drive-connecting shaft and this second drive-connecting shaft include the first side wall and the second sidewall respectively, and this first L-shaped kink is articulated in this first side wall, and this second L-shaped kink is articulated in this second sidewall.

13. press-key structure as claimed in claim 12, it is characterized in that, when this keycap is pressed into pressing position from this non-pressing position, this first metallic supports rotates around this first side wall with this first drive-connecting shaft for fulcrum, and this second metallic supports rotates around this second sidewall with this second drive-connecting shaft for fulcrum.

14. press-key structure as claimed in claim 11, it is characterised in that when this keycap is pressed into pressing position from this non-pressing position, this first metallic supports and this second metallic supports are parallel to the lower surface of this keycap.

15. press-key structure as claimed in claim 11, it is characterised in that when this keycap is pressed into pressing position from this non-pressing position, the upper surface of this first metallic supports and this second metallic supports fits in the lower surface of this keycap.

16. press-key structure as claimed in claim 11, it is characterized in that, this film switch circuit also has the first snap fit passage and the second snap fit passage, when this keycap is pressed into pressing position from this non-pressing position, this first snap fit and this second snap fit respectively enter in this first snap fit passage and this second snap fit passage.

17. press-key structure as claimed in claim 11, it is characterised in that this film switch circuit also includes depressed part, when this keycap is positioned at this non-pressing position, this depressed part is received this and first is supported by portion and this second is supported by portion.

18. press-key structure as claimed in claim 11, it is characterised in that this press-key structure also includes light guide plate, and this light guide plate is arranged on this film switch circuit.

19. press-key structure as claimed in claim 18, it is characterized in that, this light guide plate has the first snap fit guide hole and the second snap fit guide hole, when this keycap is pressed into pressing position from this non-pressing position, this first snap fit and this second snap fit respectively enter in this first snap fit guide hole and this second snap fit guide hole.