CN220985645U - Key structure and switch controller - Google Patents
Key structure and switch controller Download PDFInfo
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- CN220985645U CN220985645U CN202322436417.XU CN202322436417U CN220985645U CN 220985645 U CN220985645 U CN 220985645U CN 202322436417 U CN202322436417 U CN 202322436417U CN 220985645 U CN220985645 U CN 220985645U
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- main board
- touch panel
- key structure
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- 239000011324 bead Substances 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Abstract
The utility model discloses a key structure and a switch controller, wherein the key structure comprises a shell, a touch panel, a touch sensor and a main board, wherein the shell is provided with a containing groove with an opening; the touch panel cover is arranged on the shell and can cover the opening of the containing groove, and the touch panel is provided with a key part; the touch sensor is arranged corresponding to the key part and is positioned on one side of the touch panel facing the shell; the mainboard is contained in the accommodating groove and is positioned between the bottom wall of the accommodating groove and the contact sensor, and the mainboard is electrically connected with the contact sensor and the key part. In the technical scheme of the utility model, the key part does not need to move down for a longer stroke, the opening and closing can be realized only by touching the key part lightly, and the contact sensor is arranged to improve the sensitivity of the key part, so that the contact panel can be prevented from moving up and down greatly, and the service life of the contact panel is prolonged.
Description
Technical Field
The utility model relates to the technical field of switches, in particular to a key structure and a switch controller.
Background
The principle of a push-button switch is based on the switching on and off of a current, which is usually constituted by two metal contacts, one fixed and one movable. When the key is pressed, the movable contact contacts with the fixed contact to form a circuit path, and current can flow through the key switch, so that the key is opened; when the key is released, the movable contact is separated from the fixed contact, the circuit is interrupted, and the current cannot pass through the key switch, so that key closing is realized. In the related art, a key switch needs a longer stroke to trigger the key, and the longer key stroke can increase the movement distance of the key, so that the trigger force of the key is dispersed in a larger range, thereby reducing the sensitivity of the key.
Disclosure of utility model
The utility model mainly aims to provide a key structure, aiming at improving the pressing sensitivity of the key structure.
In order to achieve the above object, the present utility model provides a key structure, comprising:
the shell is provided with a containing groove with an opening;
The touch panel is covered on the shell and can cover the opening of the accommodating groove, and the touch panel is provided with a key part;
The touch sensor is arranged corresponding to the key part and is positioned on one side of the touch panel facing the shell; and
The mainboard is accommodated in the accommodating groove, is positioned between the bottom wall of the accommodating groove and the contact sensor, and is electrically connected with the contact sensor and the key part.
Optionally, the key structure includes a thimble assembly, where the thimble assembly is disposed corresponding to the key portion and is located between the main board and the contact sensor; the thimble assembly comprises at least two thimbles, one end of each thimble is electrically connected with the contact sensor, the other end of each thimble is electrically connected with the main board, one end of the other thimble is electrically connected with the key part, and the other end of the other thimble is grounded.
Optionally, the thickness of the key part is D, wherein D is more than or equal to 0.3 and less than or equal to 0.6mm.
Optionally, the key structure is provided with a plurality of contact sensors, the touch panel is provided with a plurality of key parts, each contact sensor is arranged corresponding to one key part, the main board is connected with the plurality of contact sensors in parallel, and the main board is connected with the plurality of key parts in parallel.
Optionally, the key structure further includes a key support, where the key support is accommodated in the accommodating groove and is located between the touch sensor and the main board; the key support is provided with hole sites, and the hole sites are arranged corresponding to the key parts.
Optionally, the button support is equipped with a plurality of spacing archs along its circumference, and is a plurality of spacing archs with the lateral wall butt of holding groove is spacing.
Optionally, the mainboard corresponds the button portion is equipped with the lamp pearl, touch panel corresponds the button portion has seted up first light trap, the second light trap has been seted up to the contact sensor, the lamp pearl corresponds the second light trap with first light trap sets up.
Optionally, both side walls of the accommodating groove are provided with limiting steps, each limiting step is provided with a first step surface and a second step surface, and both sides of the main board are respectively in butt joint with two first step surfaces to limit.
Optionally, each first step surface is provided with a bump, grooves are formed on two sides of the main board, and each groove is matched with one bump so as to fix the main board on the first step surface.
The utility model also provides a switch controller, which comprises a key structure, wherein the key structure comprises:
the shell is provided with a containing groove with an opening;
The touch panel is covered on the shell and can cover the opening of the accommodating groove, and the touch panel is provided with a key part;
The touch sensor is arranged corresponding to the key part and is positioned on one side of the touch panel facing the shell; and
The mainboard is accommodated in the accommodating groove, is positioned between the bottom wall of the accommodating groove and the contact sensor, and is electrically connected with the contact sensor and the key part.
In the technical scheme of the utility model, when a user touches the key part of the touch panel, downward pressure is applied to the key part and the key part generates downward displacement, at the moment, the contact sensor detects the downward pressure from the key part and generates an electric signal, the contact sensor transmits the electric signal to the control chip of the main board, and the control chip of the main board can judge that the key part corresponding to the contact sensor is pressed according to the electric signal fed back by the contact sensor, so that the key part is controlled to form a circuit path, and the opening of the key part is realized; the user touches the key part again, the contact sensor senses the pressure from the key part and generates an electric signal, and the contact sensor transmits the electric signal to a control chip of the main board so as to control the circuit at the key part to be disconnected, thereby realizing the closing of the key part; this structure sets up and makes the button portion need not to move down longer stroke, only need lightly touch the button portion can realize opening and closing, and set up touch sensor has improved the sensitivity of button portion, also can avoid the touch panel is by a wide margin lift and is removed, extension touch panel's life.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an exploded view of a key structure according to a first embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
Fig. 3 is an exploded view of a key structure according to a second embodiment of the present utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The principle of a push-button switch is based on the switching on and off of a current, which is usually constituted by two metal contacts, one fixed and one movable. When the key is pressed, the movable contact contacts with the fixed contact to form a circuit path, and current can flow through the key switch, so that the key is opened; when the key is released, the movable contact is separated from the fixed contact, the circuit is interrupted, and the current cannot pass through the key switch, so that key closing is realized. In the related art, a key switch needs a longer stroke to trigger the key, and the longer key stroke can increase the movement distance of the key, so that the trigger force of the key is dispersed in a larger range, thereby reducing the sensitivity of the key.
In order to solve the above-mentioned problems, the present utility model provides a key structure for improving the pressing sensitivity of the key structure, and fig. 1 to 3 are embodiments of the key structure according to the present utility model.
Referring to fig. 1 to 3, the present utility model provides a key structure 1000, which includes a housing 1, a touch panel 2, a touch sensor 3, and a main board 4, wherein the housing 1 is provided with a container 11 having an opening; the touch panel 2 is covered on the shell 1 and can cover the opening of the accommodating groove 11, and the touch panel 2 is provided with a key part 21; the touch sensor 3 is disposed corresponding to the key portion 21 and is located on a side of the touch panel 2 facing the housing 1; the main board 4 is accommodated in the accommodating groove 11 and is located between the bottom wall of the accommodating groove 11 and the touch sensor 3, and the main board 4 is electrically connected with the touch sensor 3 and the key part 21.
In the technical scheme of the utility model, when a user touches the key part 21 of the touch panel 2, a pressing force is applied to the key part 21 and the key part 21 generates a pressing displacement, at this time, the touch sensor 3 detects the pressing force from the key part 21 and generates an electric signal, the touch sensor 3 transmits the electric signal to the control chip of the main board 4, and the control chip of the main board 4 can judge that the key part 21 corresponding to the touch sensor 3 is pressed according to the electric signal fed back by the touch sensor 3, so that the key part 21 is controlled to form a circuit path, and the opening of the key part 21 is realized; the user touches the key part 21 again, the touch sensor 3 senses the pressure from the key part 21 and generates an electric signal, and the touch sensor 3 transmits the electric signal to the control chip of the main board 4 so as to control the circuit at the key part 21 to be disconnected, thereby realizing the closing of the key part 21; this structure sets up to make the button portion 21 need not to move down longer stroke, only need lightly touch the button portion 21 can realize opening and closing, and set up touch sensor 3 has improved the sensitivity of button portion 21, also can avoid touch panel 2 is by a wide margin lift and move, extension touch panel 2's life. The touch panel 2 may be a plastic touch panel 2 or a metal touch panel 2, which is not limited in the present utility model; the contact sensor 3 may be a pressure sensor or a strain sensor, and the present utility model is not limited thereto.
Further, referring to fig. 1 and 2, in an embodiment of the present utility model, the key structure 1000 includes a thimble assembly 5, and the thimble assembly 5 is disposed corresponding to the key portion 21 and located between the main board 4 and the touch sensor 3; the thimble assembly 5 includes at least two thimble 51, one end of the thimble 51 is electrically connected with the touch sensor 3, the other end is electrically connected with the main board 4, one end of the other thimble 51 is electrically connected with the key portion 21, and the other end is grounded. When a user touches the key part 21 of the touch panel 2, applying a pressing force to the key part 21 and enabling the key part 21 to generate a pressing displacement, at this time, the touch sensor 3 detects the pressing force from the key part 21 and generates an electric signal, the touch sensor 3 transmits the electric signal to one thimble 51, one thimble 51 transmits the electric signal to a control chip of the main board 4, and the control chip of the main board 4 can judge that the key part 21 corresponding to the touch sensor 3 is pressed according to the electric signal fed back by one thimble 51, so as to control the key part 21 to form a circuit path, thereby realizing the opening of the key part 21; the user touches the key part 21 again, the contact sensor 3 senses the pressure from the key part 21 and generates an electric signal, the contact sensor 3 transmits the electric signal to one thimble 51, the thimble 51 transmits the electric signal to the control chip of the main board 4, and then the circuit at the key part 21 is controlled to be disconnected, so that the key part 21 is closed; when the touch panel 2 is a metal touch panel 2, since the metal touch panel 2 has good electrical conductivity, static electricity may be accumulated when the key portion 21 is in the closed state, and the other thimble 51 is grounded to guide the static electricity to the ground, so as to prevent the static electricity from damaging the switch of the key structure 1000, and prolong the service life of the key structure 1000.
In order to implement the installation of the ejector pins 51, referring to fig. 3, in an embodiment of the present utility model, at least two installation holes 41 are formed on the main board 4, and each ejector pin 51 is disposed through one of the installation holes 41 and connected to the main board 4. The thimble 51 is disposed on the main board 4 through the mounting hole 41, so as to position the thimble 51, prevent the thimble 51 from shifting during use, improve the use safety and ensure the stable operation of the key structure 1000.
In order to make it easier for the touch sensor 3 to detect the pressure of the key portion 21, in one embodiment of the present utility model, the thickness of the key portion 21 is D, wherein 0.3D is 0.6mm. When the key portion 21 is set to be very thin, the user lightly touches the key portion 21, the touch sensor 3 can detect the change of the pressing of the key portion 21, and then an electric signal can be transmitted to the control chip of the main board 4, and the control chip of the main board 4 can judge that the key portion 21 corresponding to the touch sensor 3 is pressed according to the electric signal fed back by the touch sensor 3, so as to control the key portion 21 to form a circuit path, thereby realizing the opening of the key portion 21, and when the key portion 21 is set to be sufficiently thin, the touch sensor 3 can detect the change of the pressing of the key portion 21, namely, the pressing displacement is very short, so that the sensitivity of the key structure 1000 is improved.
Referring to fig. 1 and 2, in an embodiment of the utility model, the key structure 1000 is provided with a plurality of the touch sensors 3, the touch panel 2 is provided with a plurality of the key portions 21, each of the touch sensors 3 is disposed corresponding to one of the key portions 21, the main board 4 is connected in parallel with the plurality of the touch sensors 3, and the main board 4 is connected in parallel with the plurality of the key portions 21. When a user touches one of the key parts 21, the key part 21 generates the largest pressing displacement, the signal variation detected by the contact sensor 3 corresponding to the key part 21 is the largest, each contact sensor 3 transmits the electric signal to the control chip of the main board 4, the control chip of the main board 4 can judge that the key part 21 corresponding to the contact sensor 3 with the largest signal is pressed according to the electric signal fed back by each contact sensor 3, thereby controlling the key part 21 to form a circuit path, realizing the opening of the key part 21 and other key parts 21 not executing the related triggering operation; when the user presses two or more of the key portions 21, the signal change amounts detected by the touch sensors 3 corresponding to the two or more of the key portions 21 are large, the two or more of the key portions 21 are triggered to be turned on, so that the key portions 21 can be independently controlled to be turned on and off, and the key portions 21 can be jointly controlled to be turned on and off.
Referring to fig. 3, in an embodiment of the present utility model, the key structure 1000 further includes a key support 6, and the key support 6 is accommodated in the accommodating groove 11 and located between the touch sensor 3 and the main board 4; the key holder 6 is provided with a hole 61, and the hole 61 is provided corresponding to the key portion 21. When the touch panel 2 is a metal touch panel 2, since the metal has good conductivity, the key support 6 is disposed between the touch sensor 3 and the main board 4, so as to separate the metal touch panel 2 from the main board 4, thereby avoiding the influence on the operation of the key structure 1000 due to the conductivity of the metal touch panel 2, and the key support 6 is further provided to support and fix the touch panel 2.
In order to fix the key support 6, referring to fig. 3, in an embodiment of the present utility model, the key support 6 is provided with a plurality of limiting protrusions 62 along a circumferential direction thereof, and the plurality of limiting protrusions 62 are in abutment with the side walls of the accommodating groove 11. The plurality of limiting protrusions 62 are abutted against the side wall of the accommodating groove 11, so as to firmly clamp the key support 6 in the accommodating groove 11.
In order to prompt the user about the position of the key portion 21, referring to fig. 1 and 2, in an embodiment of the present utility model, a lamp bead 42 is disposed on the main board 4 corresponding to the key portion 21, a first light hole 22 is disposed on the touch panel 2 corresponding to the key portion 21, a second light hole 31 is disposed on the touch sensor 3, and the lamp bead 42 is disposed corresponding to the second light hole 31 and the first light hole 22. In a dimly or no-light environment, the user cannot find the position of the key part 21 without using other devices, so the lamp beads 42 are provided to prompt the user about the position of the key part 21, and the light emitted from the lamp beads 42 is emitted through the first light-transmitting holes 22 and the second light-transmitting holes 31, so that the user is prompted for use by the user.
In order to mount the main board 4 in the accommodating groove 11, referring to fig. 1, in an embodiment of the utility model, two side walls of the accommodating groove 11 are provided with limiting steps 12, each limiting step 12 has a first step surface 121 and a second step surface 122, and two sides of the main board 4 are respectively abutted to and limited by the two first step surfaces 121. Two sides of the bottom wall of the main board 4 are respectively abutted with the two first step surfaces 121, so that the main board 4 is placed on the first step surfaces 121, the main board 4 is not directly contacted with the bottom wall of the containing groove 11, and a certain space is reserved between the main board 4 and the bottom wall of the containing groove 11, so that the main board 4 dissipates heat, the main board 4 is prevented from burning out due to high heat generated by long-time operation, and the service life of the main board 4 is prolonged.
Further, referring to fig. 1, in an embodiment of the present utility model, each of the first step surfaces 121 is provided with a bump 121a, two sides of the main board 4 are provided with grooves 43, and each groove 43 cooperates with one bump 121a to fix the main board 4 to the first step surface 121. Each of the grooves 43 is matched with one of the protruding blocks 121a to limit the main board 4 to the first step surface 121, so that the position of the main board 4 is not shifted due to the integral movement of the key structure 1000, and the stability of the operation is ensured.
The utility model also provides a switch controller, which comprises a key structure 1000, wherein the specific structure of the key structure 1000 refers to the above embodiment, and because the switch controller adopts all the technical schemes of all the above embodiments, the switch controller at least has all the beneficial effects brought by the technical schemes of the above embodiments, and the details are not repeated here.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. A key structure, comprising:
the shell is provided with a containing groove with an opening;
The touch panel is covered on the shell and can cover the opening of the accommodating groove, and the touch panel is provided with a key part;
The touch sensor is arranged corresponding to the key part and is positioned on one side of the touch panel facing the shell; and
The mainboard is accommodated in the accommodating groove, is positioned between the bottom wall of the accommodating groove and the contact sensor, and is electrically connected with the contact sensor and the key part.
2. The key structure of claim 1, wherein the key structure comprises a thimble assembly disposed in correspondence with the key portion and located between the main board and the touch sensor; the thimble assembly comprises at least two thimbles, one end of each thimble is electrically connected with the contact sensor, the other end of each thimble is electrically connected with the main board, one end of the other thimble is electrically connected with the key part, and the other end of the other thimble is grounded.
3. The key structure according to claim 1, wherein the thickness of the key part is D, wherein 5.ltoreq.d.ltoreq.10 mm.
4. The key structure according to claim 1, wherein the key structure is provided with a plurality of the touch sensors, the touch panel is provided with a plurality of the key parts, each of the touch sensors is provided corresponding to one of the key parts, the main board is connected in parallel with the plurality of the touch sensors, and the main board is connected in parallel with the plurality of the key parts.
5. The key structure of claim 1, further comprising a key holder received in the pocket and positioned between the touch sensor and the motherboard; the key support is provided with hole sites, and the hole sites are arranged corresponding to the key parts.
6. The key structure of claim 5, wherein the key support is provided with a plurality of limiting protrusions along a circumferential direction thereof, and the plurality of limiting protrusions are in abutting connection with the side walls of the accommodating groove.
7. The key structure of claim 1, wherein the main board is provided with a light bead corresponding to the key portion, the touch panel is provided with a first light hole corresponding to the key portion, the touch sensor is provided with a second light hole, and the light bead is provided corresponding to the second light hole and the first light hole.
8. The key structure of claim 1, wherein two side walls of the accommodating groove are provided with limiting steps, each limiting step is provided with a first step surface and a second step surface, and two sides of the main board are respectively abutted and limited with two first step surfaces.
9. The key structure of claim 8, wherein each of the first step surfaces is provided with a bump, and both sides of the main board are provided with grooves, each of the grooves being matched with one of the bumps to fix the main board to the first step surface.
10. A switch controller comprising a key structure as defined in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322436417.XU CN220985645U (en) | 2023-09-07 | 2023-09-07 | Key structure and switch controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322436417.XU CN220985645U (en) | 2023-09-07 | 2023-09-07 | Key structure and switch controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220985645U true CN220985645U (en) | 2024-05-17 |
Family
ID=91042667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322436417.XU Active CN220985645U (en) | 2023-09-07 | 2023-09-07 | Key structure and switch controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220985645U (en) |
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2023
- 2023-09-07 CN CN202322436417.XU patent/CN220985645U/en active Active
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