CN205028827U - Keypad - Google Patents
Keypad Download PDFInfo
- Publication number
- CN205028827U CN205028827U CN201520722848.5U CN201520722848U CN205028827U CN 205028827 U CN205028827 U CN 205028827U CN 201520722848 U CN201520722848 U CN 201520722848U CN 205028827 U CN205028827 U CN 205028827U
- Authority
- CN
- China
- Prior art keywords
- keypad
- button portion
- mounting groove
- substrate
- button
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003292 glue Substances 0.000 claims abstract description 24
- 239000000758 substrate Substances 0.000 claims description 22
- 238000001746 injection moulding Methods 0.000 claims description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000006378 damage Effects 0.000 abstract description 16
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010412 perfusion Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002654 heat shrinkable material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Push-Button Switches (AREA)
Abstract
The utility model discloses a keypad. Keypad includes the base plate and sets up button portion on the base plate, be provided with the mounting groove in the one side of base plate, the bottom surface of button portion is fixed the tank bottom of mounting groove, the side of button portion with form the clearance between the lateral wall of mounting groove. The utility model provides a keypad can enough prevent to cause keypad's damage because of the displacement of button portion, can prevent again to damage because of the injecting glue high temperature causes button portion.
Description
Technical field
The utility model relates to a kind of keypad, particularly relates to the keypad of a kind of applicable employing low-pressure injection molding technology processing.
Background technology
For the processing of keypad, traditional technique is that the anti-lacquer craftwork of employing three is processed, but the production efficiency of this processing mode is very low, such as: carrying out mopping process for one piece of PCBA needs more than 2 minutes substantially, and needs 24 hours curing time.Meanwhile, this production technology also exists that glue is in uneven thickness, water resistance is poor, take the shortcomings such as production site is large.
At present, in order to overcome the defect of three traditional anti-lacquer craftworks, when the processing of keypad, low-pressure injection molding technology can be adopted realize.The water resistance of this mode of production is good, and glue thickness is even, and production efficiency is high, such as: for one piece of PCBA, substantially can complete processing within 1 minute, and does not need to want the extra glue curing time.
But, when using low-pressure injection molding technology, considering that button portion has the possibility of displacement, in matched moulds process, being easy to the damage causing keypad.Meanwhile, the material of low-pressure injection molding is generally the materials such as polyamide, and when injecting glue, its temperature can up to 120 DEG C about-130 DEG C, and be easy to make button portion be subject to high temperature and damage, the resistant to elevated temperatures quality requirements of this situation to button portion is very high.
Therefore, be necessary very much to design a kind of new keypad, to overcome above-mentioned defect.
Utility model content
In view of this, the utility model provides the keypad of a kind of applicable employing low-pressure injection molding technology processing, be intended to overcome defect existing in prior art, can either prevent the displacement because of button portion from causing the damage of keypad, can prevent from again causing button portion to damage because injecting glue temperature is too high.
The button portion that keypad provided by the utility model comprises substrate and arranges on the substrate, the one side of described substrate is provided with mounting groove, the bottom surface in described button portion is fixed on the bottom land of described mounting groove, forms gap between the side in described button portion and the sidewall of described mounting groove.
Keypad as above, preferably, the shape of the bottom land of described mounting groove is square; Described button portion comprises base and is arranged on the button on base, and described base comprises foursquare bottom surface, and described button is arranged in one side relative with described bottom surface on described base; Described bottom surface and described bottom land are fitted fixing.
Keypad as above, preferably, the length of side of described bottom land is greater than the length of side of described bottom surface, and the center of described bottom land and the center superposition of described bottom surface.
Keypad as above, preferably, the shape in described gap is annular.
Keypad as above, preferably, the width in described gap is 1-2mm.
Keypad as above, preferably, the outer surface of described substrate is coated with low-pressure injection molding glue-line.
Keypad as above, preferably, described mounting groove is jointly defined by the surface of described low-pressure injection molding glue-line and described substrate to be formed.
Keypad as above, preferably, be positioned on the low-pressure injection molding glue-line on the outer surface of described substrate and be provided with through hole, the sidewall of described mounting groove is formed by the inwall of described through hole, and the bottom land of described mounting groove is formed by the surface of described substrate.
Keypad as above, preferably, is filled with marine glue in described gap.
Keypad as above, preferably, described marine glue is silica gel.
Adopt keypad provided by the utility model, by arranging interstitial structure between button portion and mounting groove, make the certain space reserved during low-pressure injection molding around button portion, can prevent because button portion is subjected to displacement caused damage when closing film, the destruction of high temperature to button of injecting glue can be prevented simultaneously, in this case button portion can select general Waterproof push-button and not affect the final performance of product, saves production cost.Further, described gap defines at edge, button portion mends glue groove, and perfusion marine glue just can ensure its water proofing property.Therefore, keypad provided by the utility model can either prevent the displacement because of button portion from causing the damage of keypad, can prevent from again causing button portion to damage because injecting glue temperature is too high.
Accompanying drawing explanation
Preferred embodiment in the utility model will be described in detail by accompanying drawing below, will contribute to understanding the purpose of this utility model and advantage, wherein:
Fig. 1 is a kind of preferred embodiment of keypad of the present utility model.
Fig. 2 is schematic diagram when not installing button portion in Fig. 1.
Fig. 3 is the detail view of Fig. 1.
Fig. 4 is the sectional drawing of Fig. 1.
Embodiment
Below in conjunction with embodiment, the utility model is described in detail.The identical Reference numeral of wherein identical parts represents.It should be noted that, the word "front", "rear" of use is described below, "left", "right", "up" and "down" refer to direction in accompanying drawing, word " interior " and " outward " refer to the direction towards or away from particular elements geometric center respectively.
Fig. 1 is a kind of preferred embodiment of keypad of the present utility model; Fig. 2 is schematic diagram when not installing button portion 20 in Fig. 1; Fig. 3 is the detail view of Fig. 1; Fig. 4 is the sectional drawing of Fig. 1.Shown in composition graphs 1, Fig. 2, Fig. 3 and Fig. 4, the button portion 20 that keypad provided by the utility model comprises substrate 10 and is arranged on described substrate 10.Wherein, a surface of described substrate 10 being provided with the mounting groove 30 for installing button portion 20, particularly, the bottom surface in described button portion 20 can being fixed on the bottom land of described mounting groove 30.For keypad provided by the utility model, form gap 40 between the side in described button portion 20 and the sidewall of described mounting groove 30, particularly, described gap 40 is positioned at described button portion 20 around.
In general, for keypad provided by the utility model, when carrying out die closing operation, can allow some leeway for the contingent displacement in button portion 20 in the gap 40 be positioned at around described button portion 20, prevent the damage causing button portion 20 in matched moulds process.Meanwhile, due to the existence of button portion 20 peripheral clearance 40, when the high temperature in injection moulding process rushes glue, button portion 20 can not be touched, prevent button portion 20 from damaging because of high temperature.
In preferred embodiment shown in the figure, the shape of the bottom land of described mounting groove 30 can be set to square.Accordingly, the button 22 that described button portion 20 can comprise base 21 and be arranged on base 21, described base 21 comprises foursquare bottom surface, and described button 22 is arranged in one side relative with described bottom surface on described base 21; Described bottom surface and described bottom land are fitted fixing.Further, the length of side of described bottom land is greater than the length of side of described bottom surface, the center of described bottom land and the center superposition of described bottom surface.
For this design, the square gap 40 of even width can be formed between described button portion 20 and described mounting groove 30, such as: in a particular embodiment, the width in described gap 40 can be set to 1-2mm.This design can be adapted to installation or the welding of various conventional square button, the design of whole panel can be made more regular simultaneously.In addition, in order to coordinate the button of various different size, also described gap 40 can be set to other shapes such as annular.
In the preferred embodiment shown in Fig. 1-4, the outer surface of described substrate 10 is coated with low-pressure injection molding glue-line 50, and described mounting groove 30 is jointly defined by the surface of described low-pressure injection molding glue-line 50 and described substrate 10 to be formed.In concrete implementation process, the low-pressure injection molding glue-line 50 on the outer surface being positioned at described substrate 10 can be provided with through hole, the sidewall of described mounting groove 30 is formed by the inwall of described through hole, and the bottom land of described mounting groove 30 is formed by the surface of described substrate 10.
In this type of design, can be coated by described low-pressure injection molding glue-line 50 by other position on substrate 10 except mounting groove 30 position.Compared with the structure of traditional local brush coating, the low-pressure injection molding glue-line 50 in this entirely coated structure is more firm.
Preferably, can be filled with marine glue in described gap 40, such as, described marine glue can be realized by silica gel.This design achieves the secondary seal of button cavity, improves integrally-built water resistance.
In the particular embodiment, entirely coated structure can be realized by the technology of heat-shrinkable materials polyamide protection PCBA.On the one hand, adopt bag to iron mode and form annular seal space, and the gap 40 of 1-2mm is reserved in the surrounding in button portion 20, a difficult problem for the stressed damage of button is caused when which solves matched moulds, also can avoid causing in injecting glue process rushing glue to the risk in button cavity simultaneously, various common button can be applicable to.On the other hand, the surrounding in button portion 20 adopts the design of interstitial structure, in gap 40, insert marine glue, carries out secondary seal, ensure that the water resistance of keypad.
Adopt keypad provided by the utility model, by arranging interstitial structure between button portion and mounting groove, make the certain space reserved during low-pressure injection molding around button portion, can prevent because button portion is subjected to displacement caused damage when closing film, the destruction of high temperature to button of injecting glue can be prevented simultaneously, in this case button portion can select general Waterproof push-button and not affect the final performance of product, saves production cost.Further, described gap defines at edge, button portion mends glue groove, and perfusion marine glue just can ensure its water proofing property.Therefore, keypad provided by the utility model can either prevent the displacement because of button portion from causing the damage of keypad, can prevent from again causing button portion to damage because injecting glue temperature is too high.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (10)
1. a keypad, the button portion comprising substrate and arrange on the substrate, is characterized in that, the one side of described substrate is provided with mounting groove, the bottom surface in described button portion is fixed on the bottom land of described mounting groove, forms gap between the side in described button portion and the sidewall of described mounting groove.
2. keypad according to claim 1, is characterized in that, the shape of the bottom land of described mounting groove is square; Described button portion comprises base and is arranged on the button on base, and described base comprises foursquare bottom surface, and described button is arranged in one side relative with described bottom surface on described base; Described bottom surface and described bottom land are fitted fixing.
3. keypad according to claim 2, is characterized in that, the length of side of described bottom land is greater than the length of side of described bottom surface, and the center of described bottom land and the center superposition of described bottom surface.
4. keypad according to claim 1, is characterized in that, the shape in described gap is annular.
5. keypad according to claim 1, is characterized in that, the width in described gap is 1-2mm.
6. keypad according to claim 1, is characterized in that, the outer surface of described substrate is coated with low-pressure injection molding glue-line.
7. keypad according to claim 6, is characterized in that, described mounting groove is jointly defined by the surface of described low-pressure injection molding glue-line and described substrate to be formed.
8. keypad according to claim 7, it is characterized in that, be positioned on the low-pressure injection molding glue-line on the outer surface of described substrate and be provided with through hole, the sidewall of described mounting groove is formed by the inwall of described through hole, and the bottom land of described mounting groove is formed by the surface of described substrate.
9. according to the keypad in claim 1-8 described in any one, it is characterized in that, in described gap, be filled with marine glue.
10. keypad according to claim 9, is characterized in that, described marine glue is silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722848.5U CN205028827U (en) | 2015-09-17 | 2015-09-17 | Keypad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520722848.5U CN205028827U (en) | 2015-09-17 | 2015-09-17 | Keypad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205028827U true CN205028827U (en) | 2016-02-10 |
Family
ID=55261341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520722848.5U Active CN205028827U (en) | 2015-09-17 | 2015-09-17 | Keypad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205028827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845526A (en) * | 2017-11-30 | 2018-03-27 | 深圳麦格米特电气股份有限公司 | Keypad |
-
2015
- 2015-09-17 CN CN201520722848.5U patent/CN205028827U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107845526A (en) * | 2017-11-30 | 2018-03-27 | 深圳麦格米特电气股份有限公司 | Keypad |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |