CN101324805A - Touching key structure and household electrical appliance using the same - Google Patents
Touching key structure and household electrical appliance using the same Download PDFInfo
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- CN101324805A CN101324805A CNA2007100243499A CN200710024349A CN101324805A CN 101324805 A CN101324805 A CN 101324805A CN A2007100243499 A CNA2007100243499 A CN A2007100243499A CN 200710024349 A CN200710024349 A CN 200710024349A CN 101324805 A CN101324805 A CN 101324805A
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- key structure
- touch
- circuit board
- printed circuit
- capacitance
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Abstract
The invention provides a touch key structure and a household electrical appliance using the touch key structure. The key structure comprises an operating panel, a printed circuit board, and a capacitance-sensing device which is arranged between the operating panel and the printed circuit board and is welded to the printed circuit board. The capacitance-sensing device comprises an induction part. The induction part touches the operating panel through surfaces, so that the induction part touches the operating panel more tightly, and the capacity of the capacitance-sensing device is increased, thereby the capacitance-sensing device is induced more sensitively to the touch of a user.
Description
[technical field]
The household electrical appliance that the present invention relates to a kind of touch-key structure and use this touch-key structure.
[background technology]
Along with the development of technology, touch-key is because its induction is slight and touch fast, and dust, water and dirt are not afraid of in anti-scraping, and suitable rugged surroundings and more and more being applied in household electrical appliance or the consumer electronic product.For example U.S. Patent application US 2005/0179673A1 discloses a kind of capacitance type sensor of responding to user's finger contacts, this sensor comprises a sensing element that is coupled to a capacitance measurement circuit, described sensing element comprises one one spring that end is open gradually, thereby this open end contacts with control panel below being installed in control panel under certain external pressure effect, the other end of spring extends a pin and is welded on the circuit board that is positioned at spring below, thereby links to each other with capacitance measurement circuit on the circuit board.When user's touch controls panel during corresponding to described spring top regional, the electric capacity of described sensing element changes thereupon, and then can discern user's touch by described capacitance measurement circuit.But, because described sensing element is a spring structure, therefore in the process of installing, be not easy very much the location, need the anchor clamps of specialty usually, otherwise be easy to generate dislocation or displacement, cause the instability of input.Simultaneously, because the limitation of spring structure itself, the contact area of described sensing element and described control panel is smaller, therefore the electric capacity of described sensing element is also smaller, when user's touch controls panel during corresponding to described spring top regional the variation of detected electric capacity then littler, thereby induction of signal is not very sensitive when causing practical application.
[summary of the invention]
At above drawback, purpose of the present invention is for providing a kind of Stability Analysis of Structures, the touch-key structure of induction of signal sensitivity.
Another object of the present invention is provides a kind of household electrical appliance that adopt the touch-key structure.
For achieving the above object, described touch-key structure realizes in the following manner: a kind of touch-key structure, comprise guidance panel and printed circuit board (PCB) and between described guidance panel and described printed circuit board (PCB) and be welded in capacitance-type sensing device on the described printed circuit board (PCB), described capacitance-type sensing device comprises induction part, contacting between described induction part and the described guidance panel is the face contact, thereby make applying each other more tight, increase the electric capacity of described capacitance-type sensing device simultaneously, thereby make described capacitance-type sensing device more sensitive the induction that the user touches.
As of the present invention preferred embodiment a kind of, be extended with the support portion respectively downwards along described induction part two ends, described support portion comprises guide part and pin, described pin is welded in the through-holes of printed circuit boards.When needs are arranged in juxtaposition a plurality of described capacitance-type sensing devices, often be provided with partition at adjacent two sensing devices, the design of guide part can make described support portion be close to this partition, thereby prevents to produce bigger displacement; Adopt the mode of through hole weldering to allow operating personnel directly to weld simultaneously from the opposite side of printed circuit board (PCB), like this, even when long-term the use or under the abominable environment for use (when for example using on smoke exhaust ventilator), can not come in contact bad phenomenon yet; Can also prevent effectively that in addition described capacitance-type sensing device from producing dislocation or displacement at assembling process.
As of the present invention another preferred embodiment, described support portion comprises two pins at least, connects by connecting portion between the described pin.Like this, make the structure of whole support portion more stable by described connecting portion; Simultaneously can also guarantee that all pins are on the same surface level, thereby guarantee that described induction part is on the surface level, make described induction part fit with contacting more of guidance panel.
As another preferred embodiment of the present invention, described support portion further is provided with elastic deformation portion, thereby allows described induction part to produce certain displacement at vertical direction, has further guaranteed the applying of described induction part and described guidance panel.More preferred, described elastic deformation portion is " C " type that caves inward, and offers punching along described elastic deformation portion, can regulate its elasticity by the radian of adjusting described elastic deformation portion or the size that changes punching.
[description of drawings]
The invention will be further described below in conjunction with drawings and embodiments.
Fig. 1 is the three-dimensional exploded view of the touch-key structure according to the present invention;
Fig. 2 is the enlarged drawing of the capacitance-type sensing device in the touch-key structure according to the present invention.
[embodiment]
As shown in Figure 1, touch-key structure 1 as a kind of embodiment of the present invention, comprise guidance panel 2 and printed circuit board (PCB) 3 and between described guidance panel 2 and the described printed circuit board (PCB) 3 and be welded in some capacitance-type sensing devices 4 on the described printed circuit board (PCB) 3, described capacitance-type sensing device 4 roughly be "
" type, " again " type or other similar shapes, comprising induction part 5 and support portion 6, contacting between wherein said induction part 5 and the described guidance panel 2 is the face contact, for example, when described guidance panel 2 was planar structure, described induction part 5 also was a planar structure; When described guidance panel 2 is spherical structure or globoidal structure, described induction part 5 also is designed to spherical structure or globoidal structure, thereby make the applying between described induction part 5 and the described guidance panel 2 more tight, and the electric capacity of described capacitance-type sensing device 4 also increases thereupon, and is therefore also more sensitive to user's contact induction.During assembling, described induction part 5 fits in the correspondence position shown in the dotted line on the described guidance panel 2, correspondingly is printed with the button of user's input operation instruction on the described guidance panel 2, when the user operates, contact corresponding button, the electric capacity of described induction part 5 promptly changes.
Below with reference to Fig. 2, enlarged diagram for capacitance-type sensing device 4 described in the touch-key structure as shown in Figure 1, as shown in the figure, extend downwards respectively along the two ends of described induction part 5 described support portion 6, comprise guide part 8, elastic deformation portion 10 and pin 9, wherein, described pin 9 be welded in the through hole (not shown) on the described printed circuit board (PCB) 3 with described printed circuit board (PCB) 3 on the capacitance measurement circuit (not shown) electrically connect mutually, described elastic deformation portion 7 can be connected between described guide part 8 and the described pin 9 and also can be connected between described guide part 8 and the described induction part.For adjusting the elasticity of described elastic deformation portion 7, preferred embodiment a kind of as the present invention, described elastic deformation portion 7 is designed to be " C " type that caves inward, can certainly be designed to " S " type or " U " type of opening in horizontal direction roughly.More preferred, along offering punching 11 on the longitudinally of described elastic deformation portion 7, also can adjust the elasticity of described elastic deformation portion 7 by the size that changes described punching 11.
Continuation is with reference to figure 2, and further, described support portion 6 comprises two pins 8 at least, is connected by a connecting portion 9 between the described pin 8, makes the structure of whole support portion 6 more stable by described connecting portion 9; Simultaneously can also guarantee that all pins 9 are on the same surface level, thereby guarantee that further described induction part 5 fits with contacting more of described guidance panel 2.
For ease of understanding, principle of work of the present invention is once simply described below, when the user touches the button that is positioned on the described guidance panel 2, capacitance measurement circuit on the described printed circuit board (PCB) 3 detects the electric capacity that is positioned at the corresponding capacitance-type sensing device 4 in described button below and changes, then signal feedback is given the control module of electrical equipment, control module is according to the signal judgement operational order that the user imported that is obtained and then the working procedure of control apparatus.
Obviously, described touch-key structure 1 can be applied to refrigerator, washing machine, and dish-washing machine, smoke exhaust ventilator in the various household electrical appliance such as kitchen range and need not to change other structures, does not therefore repeat them here.
In sum, in the category of basic fundamental thought of the present invention, the those of ordinary skill of disclosed correlative technology field at any type of change that the present invention carried out all within patented claim protection domain of the present invention.
Claims (7)
1. a touch-key structure (1), comprise guidance panel (2) and printed circuit board (PCB) (3) and be positioned at described guidance panel (2) and described printed circuit board (PCB) (3) between and be welded in capacitance-type sensing device (4) on the described printed circuit board (PCB), described capacitance-type sensing device (4) comprises induction part (5), it is characterized in that: contacting between described induction part (5) and the described guidance panel (2) is the face contact.
2. touch-key structure according to claim 1 (1) is characterized in that: be extended with support portion (6) respectively downwards along described induction part (5) two ends,
3. touch-key structure according to claim 2 (1) is characterized in that: described support portion (6) comprise guide part (7) and pin (8), and described pin (8) is welded in the through hole of described printed circuit board (PCB) (3).
4. touch-key structure according to claim 3 (1) is characterized in that: described support portion (6) comprise at least two pins (8, connect by connecting portion (9) between the described pin (8).
5. according to one of them described touch-key structure (1) of claim 2 to 4, it is characterized in that: described support portion (6) further are provided with elastic deformation portion (10).
6. touch-key structure according to claim 5 (1) is characterized in that: described elastic deformation portion (10) roughly is " C " type that caves inward, and offers punching (11) along described elastic deformation portion (10).
7. household electrical appliance is characterized in that: be equipped with according to one of them described touch-key structure (1) of claim 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100243499A CN101324805B (en) | 2007-06-13 | 2007-06-13 | Touching key structure and household electrical appliance using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100243499A CN101324805B (en) | 2007-06-13 | 2007-06-13 | Touching key structure and household electrical appliance using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101324805A true CN101324805A (en) | 2008-12-17 |
| CN101324805B CN101324805B (en) | 2011-09-21 |
Family
ID=40188367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100243499A Active CN101324805B (en) | 2007-06-13 | 2007-06-13 | Touching key structure and household electrical appliance using the same |
Country Status (1)
| Country | Link |
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| CN (1) | CN101324805B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012040976A1 (en) * | 2010-09-30 | 2012-04-05 | 江苏惠通集团有限责任公司 | Press key sense pad |
| CN103440077A (en) * | 2013-08-20 | 2013-12-11 | 深圳市振邦实业有限公司 | Arc face touch control method and arc face touch control structure |
| WO2018001221A1 (en) * | 2016-06-29 | 2018-01-04 | 青岛海尔洗衣机有限公司 | Operation display device for home appliance and washing machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2397587Y (en) * | 1999-09-23 | 2000-09-20 | 庄文豪 | Linkage key |
| CN2558061Y (en) * | 2002-07-08 | 2003-06-25 | 海尔集团公司 | Contact type control switch for refrigerator |
| CN2710254Y (en) * | 2004-01-15 | 2005-07-13 | 柴世军 | Pressure keyboard module |
-
2007
- 2007-06-13 CN CN2007100243499A patent/CN101324805B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012040976A1 (en) * | 2010-09-30 | 2012-04-05 | 江苏惠通集团有限责任公司 | Press key sense pad |
| CN103440077A (en) * | 2013-08-20 | 2013-12-11 | 深圳市振邦实业有限公司 | Arc face touch control method and arc face touch control structure |
| WO2015024273A1 (en) * | 2013-08-20 | 2015-02-26 | 深圳市振邦实业有限公司 | Arc surface touch control method and structure thereof |
| CN103440077B (en) * | 2013-08-20 | 2016-06-29 | 深圳市振邦智能科技有限公司 | Cambered surface method of toch control and structure thereof |
| WO2018001221A1 (en) * | 2016-06-29 | 2018-01-04 | 青岛海尔洗衣机有限公司 | Operation display device for home appliance and washing machine |
| CN107541903A (en) * | 2016-06-29 | 2018-01-05 | 青岛海尔洗衣机有限公司 | A kind of operation display device and washing machine for household electrical appliances |
| CN107541903B (en) * | 2016-06-29 | 2020-04-24 | 青岛海尔洗衣机有限公司 | Operation display device for household appliances and washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101324805B (en) | 2011-09-21 |
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