CN203812773U - Key assembly and electronic device with same - Google Patents

Abstract

The utility model discloses a key assembly and an electronic device with the key assembly. The key assembly comprises a circuit board, a housing, a pot, and a key. The distance between the lower surface of the housing and the upper surface of the circuit board is (img file='DDA0000499436380000011.TIF' wi='128' he='80' /). The pot is disposed on the circuit board. The distance between the highest point of the pot and the upper surface of the circuit board is (img file='DDA0000499436380000012.TIF' wi='128' he='75' /). The key is disposed in a key hole. The lower end of the key is provided with a conductive base portion which extends downwards. The lower end of the conductive base portion contacts with the upper surface of the pot. The lower end of the key is provided with a skirt edge which extends to the lower part of the lower surface of the housing. The distance between the upper surface of the skirt edge and the lower end face of the conductive base portion is (img file='DDA0000499436380000013.TIF' wi='128' he='80' /), wherein X1=X2+X3, and lower deviation b1 of the X1 is larger than or equal to the sum of the upper deviation a2 of the X2 and the upper deviation a3 of the X3, and 0<a1-(b2+b3)<=0.3 mm. The gap between the upper surface of the skirt edge and the lower surface of the housing is small, and the key of the key assembly is stable, and pressing and use effect are good.

Description

Button assembly and the electronic equipment with it

Technical field

The utility model relates to a kind of button assembly and has the electronic equipment of this button assembly.

Background technology

Button assembly be such as the electronic equipment of intelligent cipher key equipment as conventional element, in correlation technique, after button assembly assembling, pot on button extruding circuit board is young, need between button and housing, leave larger gap, thereby cause button loosening, result of use is poor.

Utility model content

The application makes the discovery of the following fact and problem based on utility model people.

After button assembly assembling, the lower end of button conventionally contacts and can not exert pressure to pot son with pot son's top surface, for this reason, between button and housing, need to reserve larger gap, otherwise may cause interfering between button and housing, cause thus button to exert pressure to pot son, in other words, button and housing and pot are young interferes.

Utility model people surprisingly finds by a large amount of research: in correlation technique, do not consider and control machining tolerance and the build-up tolerance of each member of button assembly, therefore, for fear of button and housing and the young interference of pot, when fitted position between size and the member of each member of design button assembly, what the size of space between housing and circuit board was designed is very large, after being assembled on housing and contacting with pot is young with convenient button, between button and housing, there is gap, avoid thus the young interference of button and housing and pot.

Utility model people further recognizes, owing to not considering and controlling above-mentioned machining tolerance and build-up tolerance, therefore, the size in above-mentioned gap is very large, causes button loosening, and it is poor to press with result of use.

For this reason, the application has proposed machining tolerance and the build-up tolerance of each member by controlling button assembly, can make above-mentioned gap smaller, and button is stable, and it is good to press with result of use.

For this reason, an object of the present utility model is to propose a kind of button assembly, and the button of this button assembly is stable, and it is good to press with result of use.

Another object of the present utility model is to propose a kind of electronic equipment with above-mentioned button assembly.

According to button assembly of the present utility model, comprising: circuit board; Housing, described housing is positioned at described circuit board top and spaced apart with described circuit board, and described housing is provided with key hole, and the distance between the lower surface of described housing and the upper surface of described circuit board is pot is young, and described pot son is located on described circuit board, and the young peak of described pot apart from the distance of the upper surface of described circuit board is button, described button is located in described key hole, the lower end of described button is provided with the conductive base to downward-extension, the lower end of the described conductive base upper surface young with described pot contacts, the lower end of described button is provided with the shirt rim of the lower surface below that extends to described housing, and the distance between the upper surface of described shirt rim and the lower surface of described conductive base is wherein X1=X2+X3, and the lower deviation b1 of X1 is more than or equal to the upper deviation a3 sum of upper deviation a2 and the X3 of X2,0<a1-(b2+b3)≤0.3 millimeter.

According to button assembly of the present utility model, the gap between the upper surface of shirt rim and the lower surface of housing is little, and button is stablized and is not easy to rock, and it is good to press with result of use.

In preferred embodiment of the present utility model, the upper deviation a3 of the lower deviation b1 of X1, the upper deviation a2 of X2 and X3 is equal to 0.

Particularly, X1=0.9 millimeter, a1=0.1 millimeter, X2=0.3 millimeter, b2=-0.1 millimeter, X3=0.6 millimeter, b3=0.1 millimeter, or X1=0.9 millimeter, a1=0.1 millimeter, X2=0.4 millimeter, b2=-0.1 millimeter, X3=0.5 millimeter, b3=0.1 millimeter.

In embodiment more of the present utility model, the lower surface of described button is provided with groove, and described conductive base is located in described groove.

In examples more of the present utility model, the lower surface of described conductive base extends beyond the lower surface of described shirt rim downwards.

Particularly, the upper surface of described housing meets relational expression 1.5mm≤H≤2.1mm apart from the distance H of the upper surface of described circuit board; Distance X 1 between the lower surface of described housing and the upper surface of described circuit board meets relational expression 0.95mm≤X1≤1.55mm; The lower surface of described shirt rim meets relational expression 0.4mm≤D≤1.05mm apart from the distance B of the upper surface of described circuit board.

In other examples of the present utility model, the lower surface of described conductive base is concordant with the lower surface of described shirt rim.

In some examples more of the present utility model, the lower surface of described conductive base is higher than the lower surface of described shirt rim.

Preferably, the distance K between the lower surface of described conductive base and the lower surface of described shirt rim is less than the young peak of described pot and deducts the young stroke S of described pot and be 0 apart from the upper deviation of K apart from the distance X 2 of the upper surface of described circuit board.

Particularly, the upper surface of described housing meets relational expression 1.4mm≤H≤1.5mm apart from the distance H of the upper surface of described circuit board, distance X 1 between the lower surface of described housing and the upper surface of described circuit board meets relational expression 0.85mm≤X1≤0.95mm, the lower surface of described shirt rim meets relational expression 0.3mm≤D≤0.4mm apart from the distance B of the upper surface of described circuit board, and the distance K of the lower surface of described conductive base and the lower surface of described shirt rim meets relational expression 0≤k≤0.2mm.

Alternatively, described button is integrally formed.

In embodiment more of the present utility model, described housing is located on described circuit board by support portion.

Alternatively, described housing and described support portion are integrally formed.

In embodiment more of the present utility model, the center of the upper surface of described button is provided with the icon for this keypress function of mark.

According to the electronic equipment of the utility model embodiment, comprise the described button assembly according to the utility model above-described embodiment.

According to the electronic equipment of the utility model embodiment, by being provided with above-mentioned button assembly, button is stable, and it is good to press with result of use, improves user's comfort.

Alternatively, this electronic equipment is intelligent cipher key equipment.

Alternatively, this electronic equipment is USBKey.

Brief description of the drawings

Fig. 1 is according to the schematic diagram of the button assembly of an embodiment of the utility model;

Fig. 2 is the structural representation of button, conductive base and the shirt rim of button assembly shown in Fig. 1;

Fig. 3 is according to the schematic diagram of the button assembly of another embodiment of the utility model;

Fig. 4 is the structural representation of button, conductive base and the shirt rim of button assembly shown in Fig. 3;

Fig. 5 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the first example;

Fig. 6 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the second example;

Fig. 7 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the 3rd example;

Fig. 8 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the 4th example;

Fig. 9 is the upward view of the button shown in Fig. 8, conductive base and shirt rim;

Figure 10 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the 5th example;

Figure 11 is the upward view of the button shown in Figure 10, conductive base and shirt rim;

Figure 12 is according to the structural representation of button, conductive base and the shirt rim of the button assembly of the utility model the 6th example;

Figure 13 is according to the structural representation of housing, button, conductive base and the shirt rim of the button assembly of the utility model the 7th example;

Figure 14 is the schematic diagram while showing button deflection.

Figure 15 is according to the schematic flow sheet of the manufacture method of the button assembly of the utility model embodiment.

Embodiment

Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.

In description of the present utility model, it will be appreciated that, term " " center ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, the implication of " multiple " is at least two, for example two, and three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integral; It can be mechanical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless separately there is clear and definite restriction.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.

Describe according to the button assembly 100 of the utility model embodiment below with reference to accompanying drawing, button assembly 100 can be for electronic equipment.Alternatively, this electronic equipment can be intelligent cipher key equipment or USBKey, and wherein intelligent cipher key equipment can be that the key devices of employing USB interface can be also the key devices that adopts the key devices of audio interface or adopt the wireless communication interfaces such as sound wave, NFC, bluetooth.

Need to describe, button assembly 100 has confined state and use state.When button assembly 100 is in using when state, housing 2 is positioned at the top of circuit board 1, i.e. laying state as shown in figures 1 and 3.When button assembly 100 is during in confined state,, in the time of assembling button assembly 100, the lower surface of housing 2 upward, is then assembled to circuit board 1 on housing 2, and button assembly 100 should reverse button assembly 100 after completing assembling.While being described below housing 2, circuit board 1, pot young 3 and button 4, the orientation taking button assembly 100 in using state is described as benchmark.

As shown in Fig. 1-13, comprise according to the button assembly 100 of the utility model embodiment: circuit board 1, housing 2, pot young 3 and button 4.Housing 2 is positioned at circuit board 1 above and is spaced apart with circuit board 1, and housing 2 is provided with key hole 20, and key hole 20 runs through housing 2 on the thickness direction of housing 2.Distance between the upper surface of the lower surface of housing 2 and circuit board 1 is

Pot young 3 is located on circuit board 1, and the peak T of pot young 3 apart from the distance of the upper surface of circuit board 1 is wherein, the annexation between pot young 3 and circuit board 1, structure and the operation principle etc. of pot young 3 are well known by persons skilled in the art, are not just described in detail here.User can be by pressing the output information of young 3 control circuit boards 1 of pot.It should be noted that, pot young 3 is elements for detection of user's touch location on circuit board 1.Also it should be noted that, pot young 3 has stroke S simultaneously, the distance that when the stroke S of pot young 3 refers to and is pressed against young 3 conductings of pot from pot son 3 from nature and makes circuit board 1 export corresponding information, pot son 3 peak T advances downwards.

Button 4 is located in key hole 20, and button 4 exposes above key hole 20, and user can pass through key hole 20 pressing keys 4.The lower end of button 4 is provided with the conductive base 41 to downward-extension, and the lower end of conductive base 41 contacts with the upper surface of pot young 3, and user can make the downward extrusion cooker of conductive base 41 young 3 make young 3 conductings of pot by touching button 4.

The lower end of button 4 is provided with the shirt rim 42 of lower surface 21 belows that extend to housing 2, and in other words, as shown in Figure 2, the upper surface 422 of shirt rim 42 is relative with the lower surface 21 of housing 2.Distance between the upper surface 422 of shirt rim 42 and the lower surface 411 of conductive base 41 is wherein X1=X2+X3, and the lower deviation b1 of X1 is more than or equal to the upper deviation a3 sum of upper deviation a2 and the X3 of X2, be b1>=a2+a3, and meet following relation: 0<a1-(b2+b3)≤0.3 millimeter between the lower deviation b2 of the upper deviation a1 of X1, X2 and the lower deviation of X3.

In this embodiment of the present utility model, button 4 comprises keycap 43, conductive base 41 and shirt rim 42, and in other words, conductive base 41 and shirt rim 42 belong to a part for button 4, button 4 can be integrally formed, and keycap 43, conductive base 41 and shirt rim 42 can be integrally formed.Be understandable that, conductive base 41 and shirt rim 42 also can be regarded as the element arranged side by side with button 4, and for example, conductive base 41, shirt rim 42 and button 4 are integrally formed.

Conductive base 41 is from the cardinal principle center of the lower surface of keycap 43 to downward-extension, and shirt rim 42 is from the outer of the lower surface of keycap 43 downwards and extend radially outward the below of the lower surface 21 of housing 2.Be understandable that, shirt rim 42 part relative with conductive base 41 also can be regarded as a part for keycap 43, now, shirt rim 42 is the part that extends radially outward the below of the lower surface 21 of housing 2 from the bottom of the periphery wall of keycap 43, as shown in Figure 1.Those skilled in the art will appreciate that this division is only used to describe conveniently, and can not be interpreted as restriction of the present utility model.

What need to describe is, after button assembly 100 assemblings, the lower end of button 4 conventionally contact and can not exert pressure to pot son 3 with a top surface for pot young 3, and here, the lower end of button 4 contacts the lower surface 411 that refers to conductive base 41 and contacts with a pot top surface of son 3 with pot son 3 top surface.For this reason, traditionally, in the time of design, between the upper surface 422 of shirt rim 42 and the lower surface 21 of housing 2, need to reserve larger gap, otherwise may cause interfering between button 4 and housing 2, cause thus button 4 to exert pressure to pot son 3, in other words, button 4 is interfered with housing 2 and pot young 3.

Utility model people finds by a large amount of research: in correlation technique, do not consider and control machining tolerance and the build-up tolerance of each member of button assembly 100, therefore, interfere for fear of button 4 and housing 2 and pot young 3, when fitted position between size and the member of each member of design button assembly 100, what the size of space between housing 2 and circuit board 1 (being X1) was designed is very large, thereby after button 4 is assembled on housing 2 and contacts with pot young 3, ensure to there is larger gap between button 4 and housing 2, avoid thus button 4 and housing 2 and pot young 3 to interfere.

Utility model people further recognizes, owing to not considering and controlling above-mentioned machining tolerance and build-up tolerance, therefore, after assembling, the size G in the gap (being the gap between the lower surface 21 of housing 2 and the upper surface 422 of shirt rim 42) between button 4 and housing 2 is very large, cause thus button 4 loosening, it is poor to press with result of use.

According to the button assembly 100 of the utility model embodiment, the peak T that equals pot young 3 by the distance X 1 between the design lower surface 21 of housing 2 and the upper surface of circuit board 1 is apart from distance X 3 sums between the upper surface 422 of the distance X 2 between the upper surface of circuit board 1 and shirt rim 42 and the lower surface 411 of conductive base 41, by controlling X1, the upper lower deviation of X2 and X3, by controlling housing 2, the build-up tolerance of button 4 and circuit board 1 and machining tolerance, make after button 4 is assembled on housing 2 and contacts with pot young 3, between guarantee button 4 and housing 2, there is the gap that is of a size of G, avoid button 4 and housing 2 and pot young 3 to interfere.And because size G is that upper lower deviation by controlling X1, X2 and X3 is guaranteed, therefore, the gap of size G is easily controlled and is less compared with size G in traditional button assembly 100.

Therefore, when button 4 is assembled on housing 2 and after conductive base 41 contacts with pot young 3, clearance G between the upper surface 422 of shirt rim 42 and the lower surface 21 of housing 2 is very little, pass through machining tolerance and the build-up tolerance of each member of controlling button assembly 100, can make the clearance G between the upper surface of shirt rim 42 and the lower surface of housing 2 easily control and diminish, button 4 is stablized and is not easy to rock, and it is good to press with result of use.Simultaneously by making to meet following relation: 0<a1-(b2+b3)≤0.3 millimeter between the lower deviation b2 of upper deviation a1, X2 of X1 and the lower deviation of X3, now due to the relation of better having controlled between these tolerances, be equivalent to G≤0.3 millimeter, therefore, more can ensure the stability of button 4, ensure that better button 4 is not easy to rock, and presses with result of use better.

Thus, according to the button assembly 100 of the utility model embodiment, gap (also can be called the gap between housing 2 and button 4) between the upper surface 422 of shirt rim 42 and the lower surface 21 of housing 2 is little and easily control, and button 4 is stable and be not easy to rock, and it is good to press with result of use.

In preferred embodiments more of the present utility model, the upper deviation a3 of the lower deviation b1 of X1, the upper deviation a2 of X2 and X3 is equal to 0.Now because the upper deviation a2 of lower deviation b1, X2 and the upper deviation a3 of X3 of X1 are equal to 0, thereby now adjust only the size G in the gap between button 4 and housing 2 with the lower deviation b2 of upper deviation a1, X2 by adjusting X1 and the lower deviation b3 of X3, thereby can further reduce the size G in the gap between the upper surface 422 of shirt rim 42 and the lower surface 21 of housing 2, ensure to avoid to interfere between button 4 and housing 2 and pot young 3 simultaneously.

In further embodiment of the present utility model, the upper deviation a2 of lower deviation b1, X2 and the upper deviation a3 of X3 at X1 are equal to 0, meet following relation: 0<a1-(b2+b3)≤0.3 millimeter between the upper deviation a1 of X1, the lower deviation b2 of X2 and the lower deviation of X3.Therefore, can further ensure the stability of button 4, ensure that better button 4 is not easy to rock, and presses with result of use better.

In concrete examples more of the present utility model, X1=0.9 millimeter, a1=0.1 millimeter, X2=0.3 millimeter, b2=-0.1 millimeter, X3=0.6 millimeter, b3=0.1 millimeter.In another concrete example, X1=0.9 millimeter, a1=0.1 millimeter, X2=0.4 millimeter, b2=-0.1 millimeter, X3=0.5 millimeter, b3=0.1 millimeter.

The application's utility model people finds, by as above designing above-mentioned size, can control better the steadiness of button 4, avoids rocking in the key hole 20 of housing 2, particularly when button assembly 100 is for intelligent cipher key equipment, as USBKe _ytime, favourable especially.

Describe according to the button assembly 100 of the utility model specific embodiment below with reference to Fig. 1 and 2.

As illustrated in fig. 1 and 2, button assembly 100 comprises circuit board 1, housing 2, pot young 3 and button 4.Pot young 3 is located on the upper surface of circuit board 1.The peak T of pot young 3 apart from the distance of the upper surface of circuit board 1 is the stroke of pot young 3 is S.

Housing 2 is positioned at circuit board 1 above and is spaced apart with circuit board 1.For example, housing 2 is located on circuit board 1 by support portion 7.Housing 2 is integrally formed with support portion 7.Housing 2 is provided with key hole 20, and key hole 20 runs through housing 2 on the thickness direction of housing 2.Distance between the lower surface 21 of housing 2 and the upper surface of circuit board 1 is

Button 4 is located in key hole 20, and button 4 exposes above key hole 20.More specifically, as illustrated in fig. 1 and 2, button 4 comprises keycap 43, conductive base 41 and shirt rim 42.The lower surface of keycap 43 is provided with downward opening groove 40, conductive base 41 is positioned at groove 40, in other words, conductive base 41 is from the end face of groove 40 to downward-extension, shirt rim 42 extends radially outward from the bottom of the periphery wall of keycap 43, the gap that the upper surface 422 of shirt rim 42 is relative with the lower surface 21 of housing 2 and the size of space is G.The center of the upper surface of button 4 is provided with the icon 44 for these button 4 functions of mark.In other words, the center of the upper surface of keycap 43 is provided with the icon 44 for the function of mark button 4.Be understandable that, use the electronic equipment of button assembly 100 can there are multiple buttons 4, by icon 44 is set, be convenient to key range 4 to press as required corresponding button 4.Preferably, multiple buttons 4 can share a housing 2.

The lower surface 21 of shirt rim 42 is concordant with the lower surface of keycap 43, lower surface (free end face) 411 of conductive base 41 is higher than the lower surface of keycap 43 and shirt rim 42, as shown in Figure 1, distance between the lower surface 411 of conductive base 41 and keycap 43 and the lower surface of shirt rim 42 is K, in other words, does not extend the lower end of conductive base 41.The lower surface of keycap 43 and shirt rim 42 is D apart from the distance of the upper surface of circuit board 1.Certainly, be understandable that, in this embodiment of the present utility model, distance B should guarantee that conductive base 41 is pressed onto pot son 3 position downwards and makes pot when young 3 conducting, the not upper surface of contact circuit plate 1 of the lower surface 421 of shirt rim 42.Meanwhile, in this embodiment of the present utility model, the shape of groove 40 should be guaranteed pot son 3 to be pressed onto to position downwards and to make pot when young 3 conducting in conductive base 41, and the inwall that groove 40 should hold pot young 3 and groove 40 does not contact with a pot son 3.

Distance between the upper surface 422 of shirt rim 42 and the lower surface 411 of conductive base 41 is wherein X1=X2+X3, and the lower deviation b1 of X1 is more than or equal to the upper deviation a3 sum of upper deviation a2 and the X3 of X2, be b1>=a2+a3, after button assembly 100 assembles thus, ensure the size G of the spacing between the upper surface 422 of shirt rim 42 and the lower surface 21 of housing 2, avoided the interference between housing 2, button 4 and pot young 3.For example, preferably, b1=a2=a3=0, and 0<a1-(b2+b3)≤0.2 millimeter.

In this embodiment of the present utility model, preferably, the peak T that the distance K between the lower surface 411 of conductive base 41 and the lower surface 421 of shirt rim 42 is less than pot young 3 deducts the young stroke S of pot and is 0 apart from the upper deviation of K apart from the distance X 2 of the upper surface of circuit board 1.Thereby now can ensure conductive base 41 be touched and young 3 conductings of pot before, the lower surface 421 of shirt rim 42 is spaced apart with the upper surface of circuit board 1 all the time, ensures that pot young 3 can be pressed to put in place and conducting.

More preferably, in this embodiment of the present utility model, the upper surface of housing 2 meets relational expression 1.4mm≤H≤1.5mm apart from the distance H of the upper surface of circuit board 1.Distance X 1 between the lower surface 21 of housing 2 and the upper surface of circuit board 1 meets relational expression 0.85mm≤X1≤0.95mm.The lower surface 421 of shirt rim 42 meets relational expression 0.3mm≤D≤0.4mm apart from the distance B of the upper surface of circuit board 1.The lower surface 411 of conductive base 41 meets relational expression 0≤k≤0.2mm with the distance K of the lower surface of shirt rim 42.

As illustrated in fig. 1 and 2, in this embodiment of the present utility model, keycap 43, shirt rim 42 and conductive base 41 are integrally formed, for example, form annular groove 40 to form conductive base 41 at the lower surface of keycap 43, and shirt rim 42 is removed to form in the top of the periphery wall of keycap 43.

In this embodiment of the present utility model, by making lower surface (free end face) 411 of conductive base 41 higher than the lower surface of keycap 43 and shirt rim 42, thereby can reduce the size of button assembly 100 on above-below direction, particularly, when button assembly 100 is during for intelligent cipher key equipment, the thickness of intelligent cipher key equipment can be as far as possible little.

Describe according to the button assembly 100 of another specific embodiment of the utility model below with reference to Fig. 3 and Fig. 4.In the embodiment shown in Fig. 3 and Fig. 4, the lower surface 411 of conductive base 41 extends beyond the lower surface 421 of shirt rim 42 downwards.In other words, stretch out in groove 40 lower surface 411 of conductive base 41.

According to this embodiment of the present utility model, the upper surface of housing 2 meets relational expression 1.5mm≤H≤2.1mm apart from the distance H of the upper surface of circuit board 1.Distance X 1 between the lower surface 21 of housing 2 and the upper surface of circuit board 1 meets relational expression 0.95mm≤X1≤1.55mm.The lower surface 421 of shirt rim 42 meets relational expression 0.4mm≤D≤1.05mm apart from the distance B of the upper surface of circuit board 1.

Fig. 3 is identical with the embodiment shown in Fig. 1 and Fig. 2 with other aspects embodiment illustrated in fig. 4, is not described in detail here.

In embodiment more of the present utility model, as shown in figure 12, the lower surface 411 of conductive base 41 is concordant with the lower surface 421 of shirt rim 42, the processing of the button 4 of being more convenient for thus.

In the embodiment shown in Fig. 1-2 and Fig. 3-4, the upper surface 422 of shirt rim 42 and the lower surface of housing 2 are plane.Be understandable that, the utility model is not limited to this, and for example, as shown in figure 13, the upper surface 422 of shirt rim 42 can be step surface, and the part that the lower surface of housing 2 is relative with upper surface 422 is also and the step surface of step-like upper surface 422 adaptations.In the case, distance between the lower terrace surfac 21A of lower surface 21 and the upper surface of circuit board 1 is X1, spacing between the lower terrace surfac 422A of upper surface 422 and the lower terrace surfac 21A of lower surface 21 is G, be understandable that, for fear of interference, the spacing between the upper terrace 422B of upper surface 422 and the upper terrace 21B of lower surface 21 can be designed to be far longer than G.

In addition, alternatively, the upper surface 422 of shirt rim 42 can inclined-plane, the part that the lower surface of housing 2 is relative with upper surface 422 can be also and the inclined-plane of upper surface 422 adaptations, in the case, the part that the lower surface of housing 2 is relative with upper surface 422 outermost point is diametrically X1 to the distance of the upper surface of circuit board 1.

Be understandable that, no matter which kind of shape the upper surface 422 of shirt rim 42 and the lower surface of housing 2 are, and relation between the lower surface of conductive base 41 and the lower surface of shirt rim 42, the structural design of button 4 should ensure in the time that button 4 is touched, in conductive base 41 to pressing down pot young 3 and making before young 3 conductings of pot, shirt rim 42 does not contact with circuit board 1, to ensure pot young 3 to be pressed by conductive base 41 in conducting state.

The application's utility model people finds, in the time that the lower surface 411 of conductive base 41 is concordant higher than the lower surface 422 of the lower surface 421 of shirt rim 42 or the lower surface 411 of conductive base 41 and shirt rim 42, if when the lower surface of shirt rim 42 is less than 0.3mm apart from the distance B of the upper surface of circuit board 1, pot young 3 has precompressed, button 4 feels are poor, and the lost of life of pot young 3, if when the lower surface 411 of conductive base 41 is greater than 0.2mm with the distance K of the lower surface 421 of shirt rim 42 simultaneously, pot young 3 cannot conducting, for this reason, in some concrete examples, the upper surface of housing 2 meets relational expression 1.4mm≤H≤1.5mm apart from the distance H of the upper surface of circuit board 1, distance X 1 between the upper surface of the lower surface of housing 2 and circuit board 1 meets relational expression 0.85mm≤X1≤0.95mm.The lower surface of shirt rim 42 meets relational expression 0.3mm≤D≤0.4mm apart from the distance B of the upper surface of circuit board 1, and the distance K of the lower surface of the lower surface of conductive base 41 and shirt rim 42 meets relational expression 0≤k≤0.2mm.

In embodiment more of the present utility model, groove 40, conductive base 41, shirt rim 42 can have various shape.In concrete examples more of the present utility model, as shown in Fig. 5-Figure 11, the cross section of groove 40 is formed as circle and on the longitudinal section perpendicular to circuit board 1, the sidewall of groove 40 from top to bottom straight line extends, be understandable that, the shape of groove 40 can be formed as other shapes, and for example the cross section of groove 40 can also be formed as ellipse or polygon, on the longitudinal section perpendicular to circuit board 1, the sidewall of groove 40 can also be that curve extends from top to bottom simultaneously.

Particularly, in the example depicted in fig. 5, on the longitudinal section perpendicular to circuit board 1, the sidewall of groove 40 from the top down camber line extends, in other words, arc transition between the side wall surface of groove 40 and the roof face of groove 40, the side wall surface of the lower surface of shirt rim 42 and groove 40 is tangent.

In the example depicted in fig. 6, on the longitudinal section perpendicular to circuit board 1, after the sidewall of groove 40 first extends vertically downward in direction from top to bottom, outward straight line stretch out, and in other words, between the lower surface of shirt rim 42 and the side wall surface of groove 40, pass through chamfered transition.

In the example depicted in fig. 7, on the longitudinal section perpendicular to circuit board 1, the sidewall of groove 40 is outwards straight line extension from top to bottom, and the cross-sectional area of groove 40 increases gradually in direction from top to bottom, in other words, the side wall surface of groove 40 is downward outward extending inclined-plane.

In the example shown in Fig. 8 and Fig. 9, arc transition between the side wall surface of groove 40 and the roof face of groove 40, arc transition between the periphery wall of conductive base 41 and lower surface 411, and the periphery wall of conductive base 41 is towards tilted extension.

In order to increase the structural strength of button 4, in further example of the present utility model, as shown in Figure 10 and Figure 11, button 4 also comprises multiple reinforcements 8, the plurality of reinforcement 8 is located in groove 40, in the example of Figure 10 and Figure 11, reinforcement 8 is four, and the two ends of each reinforcement 8 are connected with the perisporium of conductive base 41 with the internal face of groove 40 respectively.

Be understandable that, in the time of pressing keys 4, if button 4 discontinuity, button 4 may deflect.For example, as shown in figure 14, when button 4 is pressed downwards and when deflection, taking the some P on the periphery edge of the upper surface of shirt rim 42 as the center of circle, a point on the periphery edge taking P to the lower surface of conductive base 41 is on the first circle of radius, a point on the periphery edge of the lower surface of conductive base 41 enters M2 from position M1 along the peripheral traveling of the first circle, taking the some P on the periphery edge of the upper surface of shirt rim 42 as the center of circle, a point on the periphery edge taking P to the lower surface of shirt rim 42 is on the second circle of radius, a point on the periphery edge of the lower surface of shirt rim 42 enters N2 from position N1 along the peripheral traveling of the second circle, according to embodiment of the present utility model, for fear of button 4 deflection impacts pressing pot son 3, the length that the length that can set camber line M1M2 deducts arc N1N2 is less than X2 and deducts the young stroke S of pot.

Wherein, it should be noted that, in the above-mentioned structure to button assembly 100 is described, all be provided with downward opening groove 40 with the lower surface of keycap 43, conductive base 41 is positioned at groove 40 and describes for example, but what be worth understanding is, button 4 also can be formed as solid construction, now in keycap 43, be not provided with groove 40, now the position relationship between the lower surface 411 of conductive base 41 and the lower surface 421 of shirt rim 42 can have two kinds of situations, a kind of situation is that the lower surface 411 of conductive base 41 and the lower surface 421 of shirt rim 42 are concordant, the lower surface 411 that another kind of situation is conductive base 41 extends beyond the lower surface 421 of shirt rim 42 downwards.

Describe according to the manufacture method of the button assembly 100 of the utility model embodiment below with reference to Figure 15, described manufacture method comprises the steps:

Step S1: preparation has the housing 2 of key hole 20.

Step S2: prepare button 4.Need to describe, step S1 and step S2 can carry out also can successively carrying out simultaneously, are not specifically limited here.

Step S3: button 4 is assembled in key hole 20 and shirt rim 42 is supported on the lower surface of housing 2.

Step S4: pot son 3 is arranged on circuit board 1.Need to describe, step S3 and step S4 can carry out also can successively carrying out simultaneously, are not specifically limited here.

Step S5: circuit board 1 and housing 2 is connected and make pot young 3 relative with the lower end of conductive base 41, then put upside down housing 2, button 4 and circuit board 1 so that the lower end of conductive base 41 contacts with a pot upper surface of son 3.Distance between the upper surface of the lower surface of its middle shell 2 and circuit board 1 is the peak of pot young 3 apart from the distance of the upper surface of circuit board 1 is distance between the lower surface of the upper surface of shirt rim 42 and conductive base 41 is wherein control X1=X2+X3, and the lower deviation b1 of X1 is more than or equal to the lower deviation a3 sum of upper deviation a2 and the X3 of X2.

In manufacture and assembling process, by making X1=X2+X3, only by adjusting and control X1, the upper lower deviation of X2 and X3, by controlling housing 2, the build-up tolerance of button 4 and circuit board 1 and machining tolerance, make after button 4 is assembled on housing 2 and contacts with pot young 3, between button 4 and housing 2, there is the gap that is of a size of G, to avoid button 4 and housing 2 and pot young 3 to interfere, due to by adjusting and control X1, the upper lower deviation of X2 and X3 ensures the size in the gap between button 4 and housing 1, because of the size G of this gap very little, make the button 4 in the button assembly 100 after assembling stable, it is good to press with result of use.

According to the manufacture method of the button assembly 100 of the utility model embodiment, by in manufacture process, make the distance X 1 between the lower surface of housing 2 and the upper surface of circuit board 1 equal pot son 3 peak apart from distance X 3 sums between the upper surface of the distance X 2 between the upper surface of circuit board 1 and shirt rim 42 and the lower surface of conductive base 41, only by controlling housing 2, the build-up tolerance of button 4 and circuit board 1 and machining tolerance, make between button 4 and housing 2, to there is the very gap of small size G, thereby the button in the button assembly 100 that makes to have assembled 4 is stable, it is good to press with result of use.

According to the electronic equipment of the utility model embodiment, comprise the button assembly 100 according to the utility model above-described embodiment.

According to the electronic equipment of the utility model embodiment, for example intelligent cipher key equipment, USBkey, by being provided with above-mentioned button assembly 100, button 4 is stable, and it is good to press with result of use, improves user's comfort.

In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.

In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, specific features, structure, material or the feature of description can one or more embodiment in office or example in suitable mode combination.In addition,, not conflicting in the situation that, those skilled in the art can carry out combination and combination by the feature of the different embodiment that describe in this specification or example and different embodiment or example.

Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in scope of the present utility model, amendment, replacement and modification.

Claims (17)

1. a button assembly, is characterized in that, comprising:

Circuit board;

Housing, described housing is positioned at described circuit board top and spaced apart with described circuit board, and described housing is provided with key hole, and the distance between the lower surface of described housing and the upper surface of described circuit board is

Pot is young, and described pot son is located on described circuit board, and the young peak of described pot apart from the distance of the upper surface of described circuit board is

Button, described button is located in described key hole, the lower end of described button is provided with the conductive base to downward-extension, the lower end of the described conductive base upper surface young with described pot contacts, the lower end of described button is provided with the shirt rim of the lower surface below that extends to described housing, and the distance between the upper surface of described shirt rim and the lower surface of described conductive base is wherein X1=X2+X3, and the lower deviation b1 of X1 is more than or equal to the upper deviation a3 sum of upper deviation a2 and the X3 of X2,0<a1-(b2+b3)≤0.3 millimeter.

2. button assembly according to claim 1, is characterized in that, the upper deviation a3 of the lower deviation b1 of X1, the upper deviation a2 of X2 and X3 is equal to 0.

3. button assembly according to claim 2, is characterized in that, X1=0.9 millimeter, a1=0.1 millimeter, X2=0.3 millimeter, b2=-0.1 millimeter, X3=0.6 millimeter, b3=0.1 millimeter, or X1=0.9 millimeter, a1=0.1 millimeter, X2=0.4 millimeter, b2=-0.1 millimeter, X3=0.5 millimeter, b3=0.1 millimeter.

4. button assembly according to claim 1, is characterized in that, the lower surface of described button is provided with groove, and described conductive base is located in described groove.

5. according to the button assembly described in any one in claim 1-4, it is characterized in that, the lower surface of described conductive base extends beyond the lower surface of described shirt rim downwards.

6. button assembly according to claim 5, is characterized in that, the upper surface of described housing meets relational expression 1.5mm≤H≤2.1mm apart from the distance H of the upper surface of described circuit board;

Distance X 1 between the lower surface of described housing and the upper surface of described circuit board meets relational expression 0.95mm≤X1≤1.55mm;

The lower surface of described shirt rim meets relational expression 0.4mm≤D≤1.05mm apart from the distance B of the upper surface of described circuit board.

7. according to the button assembly described in any one in claim 1-4, it is characterized in that, the lower surface of described conductive base is concordant with the lower surface of described shirt rim.

8. button assembly according to claim 4, is characterized in that, the lower surface of described conductive base is higher than the lower surface of described shirt rim.

9. button assembly according to claim 8, it is characterized in that, the distance K between the lower surface of described conductive base and the lower surface of described shirt rim is less than the young peak of described pot and deducts the young stroke S of described pot and be 0 apart from the upper deviation of K apart from the distance X 2 of the upper surface of described circuit board.

10. button assembly according to claim 8, is characterized in that, the upper surface of described housing meets relational expression 1.4mm≤H≤1.5mm apart from the distance H of the upper surface of described circuit board,

Distance X 1 between the lower surface of described housing and the upper surface of described circuit board meets relational expression 0.85mm≤X1≤0.95mm,

The lower surface of described shirt rim meets relational expression 0.3mm≤D≤0.4mm apart from the distance B of the upper surface of described circuit board,

The distance K of the lower surface of described conductive base and the lower surface of described shirt rim meets relational expression 0≤k≤0.2mm.

11. button assemblies according to claim 1, is characterized in that, described button is integrally formed.

12. button assemblies according to claim 1, is characterized in that, described housing is located on described circuit board by support portion.

13. button assemblies according to claim 12, is characterized in that, described housing and described support portion are integrally formed.

14. button assemblies according to claim 1, is characterized in that, the center of the upper surface of described button is provided with the icon for this keypress function of mark.

15. 1 kinds of electronic equipments, is characterized in that, comprise button assembly as described in any one in claim 1-14.

16. electronic equipments according to claim 15, its feature exists, and this electronic equipment is intelligent cipher key equipment.

17. electronic equipments according to claim 15, its feature exists, and this electronic equipment is USBKey.