CN211454267U

CN211454267U - Touch control structure

Info

Publication number: CN211454267U
Application number: CN202020332231.3U
Authority: CN
Inventors: 朱丰; 刘飞; 赖明亮
Original assignee: Shenzhen Chk Co ltd
Current assignee: Shenzhen Chk Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-09-08
Anticipated expiration: 2030-03-17

Abstract

The utility model relates to a touch structure. The touch structure comprises a panel, a circuit board and a key, wherein the key is of an integrally formed structure, the key is located between the panel and the circuit board and is connected with the circuit board, and a gap exists between one side of the key, which is far away from the circuit board, and the panel. The keys in the touch structure are of an integrally formed structure, the structural strength of the keys is enhanced, and gaps exist between the keys and the panel, so that when a user touches the panel, the touch structure can be triggered by the gaps.

Description

Touch control structure

Technical Field

The utility model relates to a technical field of touch button especially relates to a touch structure.

Background

The touch structure is commonly used in the field of electric appliances, the structural strength of a key in the existing touch structure is not high, the key needs to be arranged in a manner of being tightly attached to a panel, and a user can trigger the touch structure by touching the panel.

SUMMERY OF THE UTILITY MODEL

Therefore, there is a need for a touch structure, in which the key has high structural strength and the key does not need to be attached to the panel to trigger the touch structure.

A touch structure is characterized by comprising a panel, a circuit board and a key, wherein the key is of an integrally formed structure, the key is located between the panel and the circuit board and connected with the circuit board, and a gap is reserved between one side of the key, which is far away from the circuit board, and the panel.

According to the touch structure, the keys in the touch structure are of an integrally formed structure, the structural strength of the keys is enhanced, a gap exists between the keys and the panel, and when a user touches the panel, the touch structure can be triggered by the gap.

In one embodiment, the key comprises a supporting portion, a pin and a sensing area, the pin extends out from one end of the supporting portion and is connected to the circuit board, the sensing area is located at one end of the supporting portion, which is far away from the pin, and protrudes out of one side of the supporting portion, and a gap exists between the sensing area and the panel.

In one embodiment, the key further includes a positioning portion, the positioning portion is bent and extended from one end of the supporting portion away from the sensing area and protrudes out of one side of the supporting portion, and the positioning portion abuts against the surface of the circuit board facing the supporting portion.

In one embodiment, the number of the positioning portions is at least two, at least one of the positioning portions is located on one side of the supporting portion, and the rest of the positioning portions are located on the other side of the supporting portion opposite to the supporting portion.

In one embodiment, at least one of the positioning portions and the sensing area are located on the same side of the supporting portion, and one side of the sensing area facing the panel is a plane or a curved surface.

In one embodiment, the surface of the positioning part facing the circuit board is attached to the surface of the circuit board facing the panel.

In one embodiment, any one of the following schemes is included:

the pins comprise integrally formed bodies and bulges, the circuit board is provided with pin holes, the bodies penetrate through the pin holes, and the bulges are clamped in the pin holes;

the pin comprises a connecting section, the connecting section is wavy, a pin hole is formed in the circuit board, and the connecting section is clamped in the pin hole.

In one embodiment, the pin holes are provided in plurality, the pins correspond to the pin holes one by one, and the pins penetrate through the pin holes and are connected with the circuit board.

Drawings

FIG. 1 is an exploded view of a touch structure according to an embodiment;

FIG. 2 is a perspective view of another embodiment of a key in the touch structure shown in FIG. 1;

FIG. 3 is a perspective view of another embodiment of a key in the touch structure shown in FIG. 1;

FIG. 4 is a left side view of a key of the touch structure shown in FIG. 3;

FIG. 5 is a perspective view of another embodiment of a key in the touch structure shown in FIG. 1;

FIG. 6 is a left side view of a key of the touch structure shown in FIG. 5;

FIG. 7 is a perspective view of another embodiment of a key in the touch structure shown in FIG. 1;

FIG. 8 is a perspective view of another embodiment of a key of the touch structure shown in FIG. 1;

fig. 9 is a schematic view of a key on a braid in the touch structure shown in fig. 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, a touch structure 10 is provided, the touch structure 10 is generally applied to a household appliance, such as an induction cooker, a rice cooker, an electric kettle, a cooking machine, and other appliances, such as an air conditioner, the household appliance includes an insulating housing, and the touch structure 10 is installed inside the housing. The shell is provided with a key mark corresponding to the position of the touch structure 10, the key mark can be a silk screen structure, when a user touches the key mark of the household appliance with a finger, or the finger is close to the upper part of the key mark, a capacitance type sensing device is formed by the human body, the key mark and the touch structure 10, and the capacitance in the sensing device changes to trigger the switch of the household appliance. It can be understood that the shape of the key identifier is not limited, and the key identifier may be a single-point key identifier or a sliding key identifier that is connected to the single-point key identifier, and the number of the key identifiers may be multiple, so as to control different functions of different household appliances. The touch structures 10 and the key identifiers may be in a one-to-one correspondence relationship, or the touch structures 10 and the key identifiers may be that one touch structure 10 corresponds to a plurality of key identifiers. When one touch structure 10 corresponds to a plurality of key identifiers, the size of the capacitance formed by the finger and the touch structure 10 changes to identify different touch structures 10 by the finger being located in different key identifier areas.

Referring to fig. 1, in an embodiment, a touch structure 10 includes a panel 100, a key 200 and a circuit board 300, the panel 100 includes an upper surface and a lower surface opposite to each other, the upper surface and the housing are attached to each other, the key 200 is disposed between the panel 100 and the circuit board 300, one end of the key 200 is close to the lower surface of the panel 100, the other end is connected to the circuit board 300, and a sensing electrode is disposed in a region of the key 200 corresponding to the circuit board 300. Specifically, the sensing electrode on the key 200 and the surrounding "ground signal" form a static capacitor, and under the condition that the surrounding environment is not changed, the value of the static capacitor is a fixed tiny value and has a fixed charging and discharging time, when a finger of a user is close to the key 200 as a conductor, the capacitance value becomes large, the inherent charging and discharging time of the capacitor is changed, and the circuit board 300 can determine whether the user touches the touch structure 10 according to the charging and discharging time of the capacitor. After it is determined that the user touches the touch structure 10, an effect of a switch of the home appliance may be formed.

Referring to fig. 1 and 2, in an embodiment, the key 200 may be a conductor or a semiconductor, and more preferably, the key 200 is made of a metal material, so that the touch structure 10 has a better touch sensitivity due to a high conductivity coefficient of the metal material. Meanwhile, the key 200 is of an integrally formed structure, so that the integrity of the key 200 and the strength of the structure are enhanced. The key 200 includes a supporting portion 210, and a positioning portion 220 and a pin 230 extending from an edge of one end of the supporting portion 210, wherein the positioning portion 220 and the pin 230 are both located at the same end of the supporting portion 210, the positioning portion 220 protrudes out of one side of the supporting portion 210, and the pin 230 is located in an extending direction of the supporting portion 210, so that the supporting portion 210 is located between the panel 100 and the circuit board 300 and is connected to the circuit board 300 through the pin 230. Specifically, the positioning portion 220 abuts against a side of the circuit board 300 facing the panel 100, and a surface of the positioning portion 220 facing the circuit board 300 is attached to a surface of the circuit board 300 facing the panel 100. When the supporting portion 210 is bent or inclined due to insufficient supporting force, the positioning portion 220 gives supporting force to the supporting portion 210. It is understood that the end of the supporting portion 210 away from the pins 230 may be attached to the panel 100 and may be spaced from the panel 100. Preferably, the length of the supporting portion 210 is longer, and the distance between one end of the supporting portion 210 and the panel 100 can be shortened as much as possible, so that the sensitivity of the structure of the touch structure 10 is higher.

In the key 200, when the pin 230 of the key 200 is mounted on the circuit board 300, the positioning portion 220 protrudes from one side of the supporting portion 210 and abuts against one side of the circuit board 300 facing the panel 100, and the positioning portion 220 effectively prevents the key 200 from being bent or inclined due to insufficient supporting force, so that the structural strength of the supporting portion 210 is enhanced, and accurate welding between the pin 230 and the circuit board 300 is ensured.

In an embodiment, the supporting portion 210, the positioning portion 220 and the pin 230 may be integrally formed to enhance the structural strength of the key 200, wherein the supporting portion 210, the positioning portion 220 and the pin 230 are substantially sheet-shaped, i.e. a metal sheet, and the thickness of the metal sheet is relatively thin, so that when a user applies a certain acting force to the key 200, the key 200 may be elastically deformed, and the structure of the key 200 has a certain toughness. Further, there are at least two positioning portions 220, wherein at least one positioning portion 220 is located on one side of the supporting portion 210, the rest positioning portions 220 are located on the other side of the supporting portion 210 opposite to each other, a plurality of positioning portions 220 can be located on the same side of the supporting portion 210, and the pins 230 are located between at least two positioning portions 220. The arrangement of the plurality of positioning parts 220 is beneficial to the balance of the key 200, and the key 200 is prevented from being inclined and bent.

Referring to fig. 1 and 2, in an embodiment, the key 200 further includes a sensing region 240, the sensing region 240 may also be integrally formed with the key 200, the shape of the sensing region 240 is not limited, and may be a semicircle, a square, a prism, and the like, the sensing region 240 is located at one end of the supporting portion 210 away from the circuit board 300 and protrudes from one side of the supporting portion 210, and the sensing region 240 and the at least one positioning portion 220 may be located at the same side of the supporting portion 210, so as to substantially maintain balance of the key 200. The sensing area 240 is located perpendicular to the extending direction of the panel 100, that is, the sensing area 240 is substantially parallel to the panel 100, and when the key 200 is connected to the circuit board 300, the sensing area 240 may be spaced apart from or attached to the panel 100. It is understood that the sensing region 240 may also be located on two opposite sides protruding from the supporting portion 210, that is, the sensing region 240 and the supporting portion 210 are perpendicular to each other and have a substantially T-shape. Specifically, the sensing region 240 may be fixed to the panel 100 by screws, snaps, adhesives, or the like, or the keys 200 may be integrally connected to the panel 100 by overmolding. For example, the panel 100 is injection molded, and the molded panel 100 is embedded into a mold to mold the key 200, so that the panel 100 and the key 200 are connected into a whole, and the key 200 is not loosened by other mechanical connection methods, thereby affecting the touch sensitivity of the key 200. It can be understood that a side of the sensing region 240 away from the circuit board 300 may be a plane or have a certain curved surface, and when the sensing region 240 is a curved surface, the sensing region 240 may protrude toward the second surface of the panel 100, which is beneficial to shorten a distance between the sensing region 240 and the panel 100, so that a capacitance formed by the key 200 is increased to enhance a sensitivity of the touch structure 10.

Referring to fig. 1 and 2, in an embodiment, the supporting portion 210 is provided with a first groove 211, the first groove 211 penetrates through two opposite sides of the supporting portion 210, due to different film forming processes, the first groove 211 can extend to the sensing region 240 and can also extend from the sensing region 240 to the pin 230, when the first groove 211 extends to the pin 230, the pin 230 forms two branches, and when the key 200 is connected with the circuit board 300, the two branches make the connection between the key 200 and the circuit board 300 more stable. It is understood that the circuit board 300 is provided with pin holes, and the pins 230 can pass through the pin holes to be fixedly connected with the circuit board 300.

Referring to fig. 3 and 4, in an embodiment, the supporting portion 210 is formed with a second groove 213, the second groove 213 penetrates through two opposite sides of the supporting portion 210, the key 200 is formed with a flange 215, the flange 215 is disposed along a peripheral wall of the second groove 213, the flange 215 protrudes out of one side of the supporting portion 210, and the flange 215 and the sensing region 240 are located on the same side of the supporting portion 210. Referring to fig. 5 and 6, in particular, the second groove 213 extends to the pin 230, so that the flange 215 at the supporting portion 210 protrudes from the supporting portion 210, and the flange 215 at the pin 230 protrudes from the pin 230. When the key 200 is mounted on the circuit board 300, the flange 215 of the pin 230 may be properly fitted with the pin hole to enhance the structural strength of the pin 230 and the circuit board 300, thereby preventing the key 200 from being bent after the key 200 is mounted on the circuit board 300.

Referring to fig. 5 and 6, in an embodiment, the lead 230 is provided with a limiting groove 231, the limiting groove 231 penetrates through two opposite sides of the lead 230, the key 200 is provided with a supporting portion 233, the shape of the limiting groove 231 is not limited, the shape of the supporting portion 233 is matched with the shape of the limiting groove 231, and when the limiting groove 231 is a rectangular groove, the supporting portion 233 may be rectangular. The supporting portion 233 and the lead 230 are disposed in an inclined manner, that is, the extending direction of the supporting portion 233 forms an included angle with the extending direction of the lead 230, so that part of the structure of the supporting portion 233 is accommodated in the limiting groove 231, and the other part of the structure protrudes out of one side of the lead 230. When the pins 230 are connected to the circuit board 300, the supporting portions 233 can support a side of the circuit board 300 away from the panel, which is helpful for the pins 230 to be properly tightly fitted with the circuit board 300, so as to enhance the assembling strength between the pins 230 and the circuit board 300, effectively prevent the pins 230 from falling off from the circuit board 300, and further enhance the structural strength between the key 200 and the circuit board 300.

Referring to fig. 1 and 7, in another embodiment, the lead 230 includes a body 235 and a protrusion 237 that are integrally formed, the circuit board 300 has a lead hole, the body 235 is disposed through the lead hole, and the protrusion 237 is clamped in the lead hole, when the key 200 is mounted on the circuit board, the protrusion 237 is disposed to effectively prevent the key 200 from falling down due to the loose connection with the circuit board 300, thereby enhancing the degree of tight fit between the key 200 and the circuit board 300. Referring to fig. 8, in another embodiment, the pin 230 includes a connection segment 239, the connection segment 239 is in a wave shape, the circuit board 300 is provided with a pin hole, the connection segment 239 is clamped in the pin hole, and the connection segment 239 and the pin hole are adapted to each other, so that when the connection segment 239 is inserted into the pin hole, the connection segment 239 is not easily detached from the circuit board 300, and the structural strength of the pin 230 and the circuit board 300 is enhanced.

Referring to fig. 1, 2 and 9, in an embodiment, the pins 230 are substantially plate-shaped and are provided in plurality, and the plurality of pins 230 may be arranged at intervals and are located between the two positioning portions 220, so that the positioning portions 220 can more effectively maintain the balance of the key 200. Specifically, the positioning portion 220 is substantially perpendicular to the pins 230, the circuit board 300 has a plurality of pin holes, and one pin 230 corresponds to one pin hole, so that the pin 230 can pass through the pin holes and be fixedly connected to the circuit board 300. In another embodiment, the pins 230 of the key 200 may be fixed on the braid 400 in a braid manner, so that the keys 200 and the keys 200 are arranged in parallel, have the same height and the same distance, the whole braid 400 is in a chain structure, which facilitates automatic transmission of an automatic component inserter, and the pins 230 are inserted into pin holes formed in the circuit board 300, thereby realizing the fixed connection of the keys 200 and the circuit board 300. The whole process is automated, and the reliability and the production efficiency of the key 200 mounted on the circuit board 300 are improved. Meanwhile, the key 200 can be manually inserted, so that the flexibility of installing the key 200 is increased.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A touch structure is characterized by comprising a panel, a circuit board and a key, wherein the key is of an integrally formed structure, the key is located between the panel and the circuit board and connected with the circuit board, and a gap is reserved between one side of the key, which is far away from the circuit board, and the panel.

2. The touch structure of claim 1, wherein the button comprises a supporting portion, a pin and a sensing area, the pin extends from one end of the supporting portion and is connected to the circuit board, the sensing area is located at one end of the supporting portion, which is far away from the pin, and protrudes from one side of the supporting portion, and a space is formed between the sensing area and the panel.

3. The touch structure of claim 2, wherein the button further includes a positioning portion, the positioning portion is bent and extended from an end of the supporting portion away from the sensing area and protrudes out of one side of the supporting portion, and the positioning portion abuts against a surface of the circuit board facing the supporting portion.

4. The touch structure of claim 3, wherein at least two positioning portions are provided, at least one of the positioning portions is located on one side of the supporting portion, and the rest of the positioning portions are located on the other side of the supporting portion opposite to the supporting portion.

5. The touch structure of claim 4, wherein the at least one positioning portion and the sensing area are located on the same side of the supporting portion, and one side of the sensing area facing the panel is a plane or a curved surface.

6. The touch structure of claim 3, wherein the surface of the positioning portion facing the circuit board is attached to the surface of the circuit board facing the panel.

7. The touch structure of claim 2, wherein the surface of the support portion is formed with convex hulls, or the surface of the support portion is provided with ribs.

8. The touch structure of claim 2, comprising any one of the following solutions:

9. The touch structure of claim 8, wherein the pin holes are provided in plurality, the pins correspond to the pin holes one to one, and the pins penetrate through the pin holes and are connected to the circuit board.

10. The touch structure of claim 2, wherein the pin has a limiting groove, the key has a supporting portion, a part of the supporting portion is received in the limiting groove, and another part of the supporting portion protrudes from one side of the pin and can support one side of the circuit board away from the panel.