CN208489133U - A kind of press-key structure - Google Patents
A kind of press-key structure Download PDFInfo
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- CN208489133U CN208489133U CN201820746582.1U CN201820746582U CN208489133U CN 208489133 U CN208489133 U CN 208489133U CN 201820746582 U CN201820746582 U CN 201820746582U CN 208489133 U CN208489133 U CN 208489133U
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- guide plate
- light guide
- press
- light
- key
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Abstract
The utility model discloses a kind of press-key structure, including wiring board, light guide plate, button assembly and at least two illuminators.Light guide plate level stacks on a side surface of setting assist side；Button assembly is vertically telescopically threaded through on light guide plate；On the same side surface of two illuminators and light guide plate setting assist side, at least two illuminators are located at outside the two sidewalls of light guide plate.Without opening up installation groove on light guide plate, just make to avoid the consistency of thickness at the different location of button assembly in light guide plate, and reduce the thickness of light guide plate, improves the uniformity of light guide plate leaded light；Illuminator is distributed in outside the two sidewalls of light guide plate, when multiple button assemblies are arranged on light guide plate, after lighting illuminator, the light that illuminator issues is radiated in the horizontal direction on the side wall end face of light guide plate, and then each button assembly is passed to along horizontal direction, so that each button assembly shines, realizes and the point light source of illuminator is converted to area source, reduce the setting quantity of illuminator.
Description
Technical field
The utility model belongs to field of display technology, and in particular to a kind of press-key structure.
Background technique
Many equipment in the prior art all have operating platform, such as industrial control equipment or military equipment, operating platform
Mainly it is made of display screen, key, indicator light and interface.These equipment are frequently necessary to operate in dark situation, and operator exists
Observe display screen while, the key around display screen is in sight blind area, operator be not clearly seen by
Function Warning Mark on key top surface, it may appear that maloperation phenomenon occurs.
Current LED light is arranged in the groove of light guide plate, so that the thickness thickness of light guide plate and in uneven thickness, causes to lead
The steering capability of tabula rasa is uneven.
Utility model content
The technical problem to be solved by the utility model is to overcome the press-key structure that can be shone in the prior art, light guide plate
Guiding performance it is uniform when, cause problem of the LED light quantity mostly with light guide plate thickness.
For this purpose, the utility model provides a kind of press-key structure, including
Wiring board；
Light guide plate, level, which stacks, to be arranged on a side surface of the wiring board；
At least one button assembly is vertically telescopically threaded through on the light guide plate；
At least two illuminators are arranged on the same side surface of the wiring board with the light guide plate, wherein at least two
A illuminator is located at outside the two sidewalls of the light guide plate.
Preferably, above-mentioned press-key structure, on the length direction of the wiring board, the both ends on the wiring board are stretched
Out outside the light guide plate, the either end of the wiring board and the light guide plate form first step between ipsilateral one end,
The illuminator is mounted on the step surface of the first step.
Preferably, above-mentioned press-key structure, the height of the illuminator are not higher than the thickness of the light guide plate.
Preferably, above-mentioned press-key structure, the light guide plate with a thickness of 1 ㎜.
Preferably, above-mentioned press-key structure, the illuminator are LED light.
Preferably, above-mentioned press-key structure, the light guide plate vertically offer perforative mounting hole；
The button assembly includes
Metal dome, it is domed；The both ends of the opening of the arch are mounted on the wiring board, with the opening phase
Pair the portion of arching upward protrude into the mounting hole；
Key is made of transparent material；One end of the key is arched upward in portion described in being connected to, and the other end passes through described
After mounting hole and stretch out outside the light guide plate.
It is further preferred that above-mentioned press-key structure, the key includes the light-guiding pillar being embedded in the mounting hole and position
Press section outside the light guide plate；One end on the light-guiding pillar far from the press section is connected to described arch upward in portion.
Preferably, the longitudinal section shape of above-mentioned press-key structure, the key is in T shape, the level of the T font
Portion is the press section, and the T-shaped vertical portion is the light-guiding pillar.
Preferably, above-mentioned press-key structure, the press-key structure further include shell, offer through-hole on the shell；
The press section includes the first part connecting with the light-guiding pillar, and second be molded in the first part
Part；On the length direction of the wiring board, the aperture of the through-hole is greater than the length of the second part and is less than described
The length of first part, and the both ends of the first part are stretched out outside the first part；
The wiring board, light guide plate, the illuminator, the light-guiding pillar and the first part are mounted on the shell
In inner cavity, the second part stretches out outside the shell through the through-hole.
Technical solutions of the utility model have the advantages that
1. press-key structure provided by the utility model, including wiring board, light guide plate, at least one button assembly and at least two
A illuminator.Light guide plate level, which stacks, to be arranged on a side surface of the wiring board；Button assembly is vertically telescopically worn
It is located on the light guide plate；Two illuminators and the light guide plate are arranged on the same side surface of the wiring board, two institutes
Illuminator is stated to be located at outside the two sidewalls of the light guide plate.
Illuminator is arranged in the circuit board and is located at outside light guide plate, nothing independently of light guide plate by the press-key structure of this structure
Installation groove need to be opened up on light guide plate, it will be able to make to avoid the consistency of thickness at the different location of button assembly in light guide plate,
The thickness of light guide plate is reduced simultaneously, and the thickness of light guide plate is thinner and thickness is more uniform, and the uniformity of light guide plate leaded light is more preferable；Together
When, illuminator is distributed in outside the two sidewalls of light guide plate, even if when multiple button assemblies are arranged on light guide plate, when lighting illuminator
Afterwards, the light that illuminator issues is radiated in the horizontal direction on the side wall end face of light guide plate, and then is passed to respectively along horizontal direction
A button assembly is realized the point light source of illuminator being converted to area source so that each button assembly shines, without as existing skill
Illuminator is respectively set in the two sides of each button assembly in art, is mitigating light guide plate to realize and is improving light guide plate
The setting quantity of illuminator is reduced while guide-lighting uniformity.
2. press-key structure provided by the utility model, on the length direction of the wiring board, on the wiring board two
End is stretched out outside the light guide plate, and the either end of the wiring board and the light guide plate form first between ipsilateral one end
Step, the illuminator are mounted on the step surface of the first step.Further the height of the illuminator is not higher than institute
The thickness of light guide plate is stated, so that the thickness of entire press-key structure is thinned, more compact structure.
3. press-key structure provided by the utility model, the light guide plate with a thickness of 1 ㎜.Due to by illuminator independently of leading
Tabula rasa is arranged outside light guide plate, under the premise of existing processing technology is horizontal, the thickness of light guide plate can be reduced to 1 ㎜, into
One step makes the thinner of press-key structure entirety.
4. press-key structure provided by the utility model, the key includes the light-guiding pillar being embedded in the mounting hole and position
Press section outside the light guide plate；One end on the light-guiding pillar far from the press section is connected to described arch upward in portion.This
The press-key structure of structure, the light that illuminator issues first is transferred on light-guiding pillar by light guide plate, then passes to pressing by light-guiding pillar
Portion, so that operator is it can be seen that function indicated by the icon shown on press section, is convenient for operator accurately
Operation button.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the longitudinal cross-section schematic diagram of the press-key structure in the utility model embodiment 1；
Fig. 2 is the longitudinal cross-section schematic diagram of the press-key structure in the utility model embodiment 1；
Fig. 3 be Fig. 2 in press-key structure in key longitudinal cross-section schematic diagram；
Appended drawing reference:
1- wiring board；2- light guide plate；3- illuminator；4- first step；
51- metal dome；52- key；The press section 521-；5211- first part；5212- second part；522-
Light-guiding pillar；
6- shell.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that term " first ", " second " are used for description purposes only, and
It cannot be understood as indicating or implying relative importance.
In addition, as long as technical characteristic involved in the utility model different embodiments disclosed below is each other
Not constituting conflict can be combined with each other.
Embodiment 1
The present embodiment provides a kind of press-key structures, as shown in Figure 1, include wiring board 1,2, button assemblies of light guide plate and
Two illuminators 3.
Wherein, wiring board 1 is preferably pcb board, and 2 level of light guide plate stacks on the top surface of setting assist side 1；Online
On the length direction of road plate 1 (left and right directions in Fig. 1), the both ends on wiring board 1 are stretched out outside light guide plate 2, and wiring board 1 is appointed
One end and light guide plate 2 form first step 4 between ipsilateral one end, and two illuminators 3 are installed respectively independently of light guide plate 2
On the step surface of a first step 4 namely two illuminators 3 are located at outside the two sidewalls of light guide plate 2.
Illuminator 3 is preferably LED light, and the height of LED light is less than the thickness of light guide plate 2, for example, light guide plate 2 with a thickness of
1mm, 1.5mm, 2mm etc., in view of the limitation of existing processing technology, the thickness of light guide plate 2 is most thin can be worked into 1mm, still
With the raising of processing technology, the thickness of light guide plate 2 can do it is thinner, for example, 0.5mm, 0.8mm etc., so that entirely pressing
Bond structure it is thinner.The preset clearance between the side wall end face of ipsilateral LED light and light guide plate 2, prevents LED light too
Close to light guide plate 2, light can not be radiated on the entire end face of side wall of light guide plate 2 in non-uniform manner.
As shown in Figure 1, button assembly is vertically telescopically threaded through on light guide plate 2.Specifically, light guide plate 2 is along perpendicular
To offering perforative mounting hole；Any one button assembly includes metal dome 51 and key 52.Wherein, metal dome 51 is domed；
In the both ends installation assist side 1 of the opening of arch, the arch upward portion opposite with opening is protruded into mounting hole；Key 52 uses
Transparent material is made, and key 52 includes the light-guiding pillar 522 in insertion mounting hole, and the press section 521 outside light guide plate 2；It leads
One end on light beam 522 far from press section 521 is connected in the portion of arching upward.
There is pattern or icon, when light is transmitted on press section 521, only pattern on the top surface of press section 521
Or shine at the position of icon, it does not shine at other positions.When being pressed downward press section 521, press section 521 drives light-guiding pillar
522 move downward to drive the portion of arching upward of metal dome 51 to be bent downwardly deformation, so that the portion that arches upward is connected with wiring board 1, realization is pressed
Control function after the pushing of key 52.Metal dome 51 is made of conductive metal material, such as copper, aluminium or albronze.
As shown in Figure 1, T-shaped horizontal part is press section 521, T for example, the longitudinal section shape of key 52 is in T shape
The vertical portion of font is light-guiding pillar 522.The length of T-shaped horizontal part is greater than the aperture of mounting hole, and the length of vertical portion is less than
The aperture of mounting hole, so that T-shaped horizontal part is overlapped on light guide plate 2 after key 52 presses down on.
As shown in Fig. 2, press-key structure further includes shell 6, the top of shell 6 offers through-hole.As shown in figure 3, above-mentioned
Press section 521 includes the first part 5211 connecting with light-guiding pillar 522, and the second part being molded in first part 5211
5212；On the length direction of assist side 1, the aperture of through-hole is greater than the length of second part 5212 and is less than first part 5211
Length, and the both ends of first part 5211 are stretched out outside second part 5212；Positioned at the side of ipsilateral first part 5211
Second step is formed between wall end and the sidewall end of second part 5212.
For example, the longitudinal section shape of press section 521 is the T-shaped of handstand, the T-shaped horizontal part that stands upside down is first part
5211, T-shaped vertical portion of standing upside down is second part 5212.Wiring board 1,2, two LED light of light guide plate, light-guiding pillar 522 and
A part 5211 is mounted in the inner cavity of shell 6, and 5212 via through holes of second part stretch out outside shell 6.
Two LED light are arranged in assist side 1 and are located at independently of light guide plate 2 and led by the press-key structure of this embodiment
Outside tabula rasa 2, without opening up installation groove in light guide plate 2, it will be able to make to avoid in light guide plate 2 at the different location of key 52
Consistency of thickness, while reducing the thickness of light guide plate 2, the thickness of light guide plate 2 is thinner and thickness is more uniform, and light guide plate 2 is guide-lighting
Uniformity is more preferable；Meanwhile LED lamp is distributed in outside the two sidewalls of light guide plate 2, even if multiple button assemblies are arranged on light guide plate 2
When, after lightening LED lamp, the light that LED light issues is radiated in the horizontal direction on the side wall end face of light guide plate 2, and then along dampening
Square press section is passed to the light-guiding pillar for passing to each 52 component of key, then by light-guiding pillar, so that on each press section
Pattern or icon shine, and realize the point light source of LED light being converted to area source, without as in the prior art the two of each key
LED light is respectively set in side, reduces while mitigating 2 thickness of light guide plate and improving the guide-lighting uniformity of light guide plate 2 to realize
The setting quantity of LED lamp.
In operator's operation button 52, since the light that LED light issues is radiated on the two sidewalls end face of light guide plate 2,
Light Transmit evenly in light guide plate 2, and it is transferred to light-guiding pillar 522, light is transferred to using transparent material by light-guiding pillar 522 again
On manufactured press section 521, so that the icon on press section 521 shines, in order to which operator learns the function of each key 52,
Accurately operation button, the phenomenon that avoiding maloperation key generation.
For example, operator is pressed downward the top of the second part 5212 of press section 521, press section 521 drives light-guiding pillar
522 move downward, and the portion of arching upward of metal dome 51 is driven to be bent downwardly deformation, so that corresponding position on arch upward portion and wiring board 1
The circuit at place is connected, and realizes and operates function indicated by the key 52；Finger is unclamped again later, in the elasticity of metal dome 51 itself
Under restoring force effect, the circuit on the wiring board 1 of corresponding position, circuit are disconnected upwardly and out in the portion of arching upward, and arch upward portion
Driving key 52 is whole to be moved upwards, so that 5212 via through holes of second part of press section 521 stretch out outside shell 6, first part
The step surface of second step between 5211 and second part 5212 is blocked on 6 inner wall of shell, makes metal dome and key all
It returns to original state.
As first alternative embodiments of embodiment 1, the quantity of LED light is three, four, five, six etc.
Deng only needing all LED to be independently of each light guide plate 2, be arranged on the top surface of assist side 1 and be located at the two sides of light guide plate 2
Wall is outer, and the specific quantity that is arranged is not construed as limiting.As deformation, light guide plate 2 and LED light can also be all disposed within wiring board 1
In bottom surface.As the deformation of LED light, LED light may be replaced by other existing illuminators 3, such as oled panel,
Or fluorescent lamp.
As second alternative embodiments of embodiment 1, multiple 52 components of key can be set on light guide plate 2,
Such as two, three, four, five etc., it, only need to be in light guide plate 2 regardless of how many a 52 components of key are arranged on light guide plate 2
Illuminator 3 is provided with outside two sidewalls can be realized above-mentioned 2 thickness of reduction light guide plate, improve the guide-lighting performance of light guide plate 2, and subtract
The function of few 3 quantity of illuminator.
As the third alternative embodiments of embodiment 1, the height of illuminator 3 can also be equal to the thickness of light guide plate 2
Degree can also make the thickness of entire press-key structure be thinned.As deformation, the height of illuminator 3 can be above light guide plate 2
Thickness, the thickness of press-key structure is relatively thick at this time, but still is able to realize and reduces 2 thickness of light guide plate, improves leading for light guide plate 2
Optical property, and reduce the function of 3 quantity of illuminator.
As the 4th alternative embodiments of embodiment 1, on the length direction of assist side 1, the length of wiring board 1
Can also be identical as the length of light guide plate 2, one end positioned at ipsilateral wiring board 1 is concordant with the end face of one end of light guide plate 2, no
It will form above-mentioned first step 4, illuminator 3 can be installed on the side wall end face of assist side 1, also be can be realized at this time
The function of stating.Alternatively, the width of wiring board 1 is greater than the width of light guide plate 2 in the width direction of assist side 1, it is ipsilateral being located at
One end of wiring board 1 and one end of light guide plate 2 between form first step, illuminator 3 is mounted on the step surface of first step
On.
As the 5th interchangeable embodiment of embodiment 1, press-key structure can also be not provided with above-mentioned shell 6,
521 longitudinal section shape of press section can be in linear type, such as pane, circular block or five-pointed star block etc..
As the further interchangeable embodiment of embodiment 1, the longitudinal section shape of key 52 can not also be in " T "
Font, such as in serpentine shape, " M " shape, or " N " shape etc., as long as having underlying light-guiding pillar 522 and being located at upper
The press section 521 of side.The shape of key 52 is not specifically limited.
As the alternative embodiments of embodiment 1, the metal dome 51 in 52 component of key can also be substituted for existing
Other conductive metal sheets with elastic deformation space, such as conductive metal sheet are in M shape or handstand V-shape.As further
Deformation, key 52 can be not limited only to the above-mentioned structure enumerated with the key 52 of existing other forms.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes among the protection scope created still in the utility model.
Claims (9)
1. a kind of press-key structure, which is characterized in that including
Wiring board (1)；
Light guide plate (2), level, which stacks, to be arranged on a side surface of the wiring board (1)；
At least one key (52) component, is vertically telescopically threaded through on the light guide plate (2)；
At least two illuminators (3) are arranged on the same side surface of the wiring board (1) with the light guide plate (2), wherein
At least two illuminators (3) are located at outside the two sidewalls of the light guide plate (2).
2. press-key structure according to claim 1, which is characterized in that described on the length direction of the wiring board (1)
The light guide plate (2) is stretched out outside in both ends on wiring board (1), the either end of the wiring board (1) and the light guide plate (2) position
First step (4) are formed between ipsilateral one end, the illuminator (3) is mounted on the step surface of the first step (4).
3. press-key structure according to claim 1 or 2, which is characterized in that the height of the illuminator (3) is not higher than described
The thickness of light guide plate (2).
4. press-key structure according to claim 3, which is characterized in that the light guide plate (2) with a thickness of 1 ㎜.
5. press-key structure according to claim 1 or 2, which is characterized in that the illuminator (3) is LED light.
6. press-key structure according to claim 1 or 2, which is characterized in that the light guide plate (2), which vertically offers, runs through
Mounting hole；
Key (52) component includes
Metal dome (51), it is domed；The both ends of the opening of the arch are mounted on the wiring board (1), with the opening
Locate the opposite portion of arching upward to protrude into the mounting hole；
Key (52), is made of transparent material；One end of the key (52) is arched upward in portion described in being connected to, and the other end passes through
After the mounting hole and stretch out the light guide plate (2) outside.
7. press-key structure according to claim 6, which is characterized in that the key (52) includes being embedded in the mounting hole
Light-guiding pillar (522), and be located at the press section (521) of the light guide plate (2) outside；It is pressed on the light-guiding pillar (522) far from described
One end of splenium (521) is connected to described arch upward in portion.
8. press-key structure according to claim 7, which is characterized in that the longitudinal section shape of the key (52) is in T word
Shape, the T-shaped horizontal part are the press section (521), and the T-shaped vertical portion is the light-guiding pillar (522).
9. press-key structure according to claim 7, which is characterized in that the press-key structure further includes shell (6), described outer
Shell offers through-hole on (6)；
The press section (521) includes the first part (5211) connecting with the light-guiding pillar (522), and is molded over described first
The partially second part (5212) on (5211)；On the length direction of the wiring board (1), the aperture of the through-hole is greater than institute
It states the length of second part (5212) and is less than the length of the first part (5211), and the first part (5211)
The first part (5211) is stretched out outside in both ends；
The wiring board (1), light guide plate (2), the illuminator (3), the light-guiding pillar (522) and the first part (5211)
It is mounted in the inner cavity of the shell (6), the second part (5212) stretches out the shell (6) outside through the through-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820746582.1U CN208489133U (en) | 2018-05-18 | 2018-05-18 | A kind of press-key structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820746582.1U CN208489133U (en) | 2018-05-18 | 2018-05-18 | A kind of press-key structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208489133U true CN208489133U (en) | 2019-02-12 |
Family
ID=65253844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820746582.1U Active CN208489133U (en) | 2018-05-18 | 2018-05-18 | A kind of press-key structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208489133U (en) |
-
2018
- 2018-05-18 CN CN201820746582.1U patent/CN208489133U/en active Active
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