CN203941838U - A kind of plastic press key and there is the projecting apparatus of this button - Google Patents
A kind of plastic press key and there is the projecting apparatus of this button Download PDFInfo
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- CN203941838U CN203941838U CN201420368903.0U CN201420368903U CN203941838U CN 203941838 U CN203941838 U CN 203941838U CN 201420368903 U CN201420368903 U CN 201420368903U CN 203941838 U CN203941838 U CN 203941838U
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- key
- trigger
- keypad
- plastic press
- matrix
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Abstract
A kind of plastic press key and there is the projecting apparatus of this button, this projecting apparatus comprises housing, upper cover, control circuit board and plastic press key, described upper cover is arranged on described housing, described control circuit board is placed in described housing, on described control circuit board, be provided with the trigger switch corresponding to described plastic press key, described plastic press key is arranged on described and covers and be connected with described control circuit board, described plastic press key comprises: a matrix, for disc-shaped structure, on described matrix, be provided with at least one group and trigger key, described in every group, trigger key and include symmetrically arranged at least two trigger columns, the described trigger column that triggers key described in every group is all positioned on the same circumference that a center of take described matrix is the center of circle and by elasticity linking arm and is connected with described matrix, keypad, is cirque structure, corresponding to triggering key setting described in every group, is provided with the syndeton for being connected with described matrix and/or described trigger column on described keypad.
Description
Technical field
The utility model relates to projecting apparatus and button thereof, particularly a kind of plastic press key and have the projecting apparatus of this button.
Background technology
In technical development today rapidly, increasing consumption electronic product towards miniature, simplify and future development cheaply, the projecting apparatus industry of commercial affairs or amusement that can be applicable to is also at these row.As projecting apparatus, realize interpersonal mutual button except meeting basic interactive function, also synchronously to outward appearance beautify, material is single, the trend development of work simplification, cost control.
The non-strength conduction-type of the general employing of the button square layout that the projecting apparatus of prior art uses, Plastic (plastic)+Rubber (rubber) structure is used in general selection.Owing to being composite construction, use two kinds of materials and increase adhesion technique, all more complicated from materials and packaging technology, and it is larger to take up room.Meanwhile, strict to the material hardness requirement of Rubber (rubber) own, feel is pressed in much higher hard impact, and hardness is too low cannot trigger switch, causes loose contact.Its top layer plastic button and rubber inner layer need be by glue bond or ultrasonic waves weldings, easily cause mutually interfering between button and cause card key.
Utility model content
Technical problem to be solved in the utility model is the above-mentioned defect for prior art, a kind of plastic press key is provided and has the projecting apparatus of this button, and plastic press key is used homogenous material, and structure and simple for assembly process, takes up room little.
To achieve these goals, the utility model provides a kind of plastic press key, wherein, comprising:
One matrix, for disc-shaped structure, on described matrix, be provided with at least one group and trigger key, described in every group, trigger key and include symmetrically arranged at least two trigger columns, the described trigger column that triggers key described in every group is all positioned on the same circumference that a center of take described matrix is the center of circle and by elasticity linking arm and is connected with described matrix;
Keypad, is cirque structure, corresponding to triggering key setting described in every group, is provided with the syndeton for being connected with described matrix and/or described trigger column on described keypad.
Above-mentioned plastic press key, wherein, described triggering key comprises that first group is triggered key, described first group of triggering key comprises at least two the first trigger columns, described the first trigger column is positioned on the first circumference and by the first elastic arm and is connected with described matrix, corresponding to described first group, trigger key and be provided with the first keypad, on the bottom surface of described the first keypad, corresponding to described the first trigger column, be provided with the first trigger column syndeton.
Above-mentioned plastic press key, wherein, described the first elastic arm is m type structure, and described m type structure has first end, the second end and the 3rd end near the center of described matrix, wherein said first end is connected with described matrix respectively with described the second end, and described the first trigger column is positioned at described the 3rd end.
Above-mentioned plastic press key, wherein, is also provided with on the bottom surface of described the first keypad for the connecting key with described matrix engagement connection, on described matrix, corresponding to described connecting key, is provided with keyway.
Above-mentioned plastic press key, wherein, described connecting key is the reed structure perpendicular to the card of described the first keypad, and the top of described reed is connected with described the first keypad, and the bottom of described reed is provided with engaging boss.
Above-mentioned plastic press key, wherein, described connecting key is symmetrical arranged centered by the center of circle of described the first keypad.
Above-mentioned plastic press key, wherein, described connecting key is 4, the angle between adjacent described connecting key is 90 degree.
Above-mentioned plastic press key, wherein, described first group of triggering key comprises 4 the first trigger columns, the angle between adjacent described the first trigger column is 90 degree.
Above-mentioned plastic press key, wherein, described the first trigger column is cylinder or prism structure, described the first trigger column syndeton is corresponding cylindrical sleeve or prism cover.
Above-mentioned plastic press key, wherein, described triggering key also comprises that second group is triggered key, described second group of triggering key comprises at least two the second trigger columns, described the second trigger column is positioned on the second circumference and by the second elastic arm and is connected with described matrix, the diameter of described the second circumference is greater than described the first circumference, triggers key be provided with the second keypad corresponding to described second group, on the bottom surface of described the second keypad, corresponding to described the second trigger column, is provided with the second trigger column syndeton.
Above-mentioned plastic press key, wherein, described the second elastic arm is U-shaped structure, and the first link of described U-shaped structure is connected with described matrix respectively with the second link, and described the second trigger column is positioned at the bottom of described U-shaped structure.
Above-mentioned plastic press key, wherein, described the second trigger column is cylinder or prism structure, described the second trigger column syndeton is corresponding cylindrical sleeve or prism cover.
Above-mentioned plastic press key, wherein, described second group of triggering key comprises 4 the second trigger columns, and the angle between adjacent described the second trigger column is 90 degree, and corresponding described the second trigger column and described the first trigger column are positioned on the same straight line by the described matrix center of circle.
Above-mentioned plastic press key, wherein, is also provided with the second keypad position limiting structure on described the second keypad.
Above-mentioned plastic press key, wherein, is also provided with the flange connector for installing on described matrix, on described flange connector, be provided with connecting hole.
Above-mentioned plastic press key, wherein, is also provided with matrix location structure on described matrix.
Above-mentioned plastic press key, wherein, on described matrix, be also provided with a center keypad that protrudes from described matrix plane, the setting that overlaps with the center of circle of described matrix of the center of circle of described center keypad, the bottom of described center keypad is provided with center trigger column, and described center keypad is connected with described matrix by the 3rd elastic arm.
Above-mentioned plastic press key, wherein, the upper surface of described center keypad and the upper surface of described keypad are positioned at same plane.
Above-mentioned plastic press key, wherein, the plastic material part that described matrix and described keypad are all structure as a whole.
In order to realize better above-mentioned purpose, the utility model also provides a kind of projecting apparatus, comprise housing, upper cover, control circuit board and plastic press key, described upper cover is arranged on described housing, described control circuit board is placed in described housing, is provided with the trigger switch corresponding to described plastic press key on described control circuit board, and described plastic press key is arranged on described and covers and be connected with described control circuit board, wherein, described plastic press key is above-mentioned plastic press key.
Beneficial functional of the present utility model is:
The utility model adopts the box-like button of circular group, compact conformation, making and simple for assembly process, Stability Analysis of Structures, materials are single, with low cost, take up room little, thin thickness, good looking appearance, the man-machine interaction that can a plurality of buttons be set is as required by key control, elasticity linking arm transmission by button completes switch triggering function, simple to operate, be quick on the draw, good hand touch.
The structure in preferred embodiment particularly, adopt the appearance design of three ring types and adopt strength conduction-type trigger architecture, there is less body combination thickness (the thinnest 5.5mm), in less space, can complete trigger action, comply with the development trend of the micro projector of current small size.
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail, but not as to restriction of the present utility model.
Accompanying drawing explanation
Fig. 1 is the projector architecture schematic diagram of the utility model one embodiment;
Fig. 2 is the plastic press key structural representation of the utility model one embodiment;
Fig. 3 is the explosive view of Fig. 2;
Fig. 4 is that Fig. 2 is along the cutaway view of A-A;
Fig. 5 A is the basal body structure schematic diagram of the utility model one embodiment;
Fig. 5 B is Fig. 5 A another side structural representation;
Fig. 5 C is the front view of Fig. 5 A;
Fig. 5 D is the rearview of Fig. 5 A;
Fig. 5 E is the right view of Fig. 5 C;
Fig. 6 A is the first keypad structural representation of the utility model one embodiment;
Fig. 6 B is the front view of Fig. 6 A;
Fig. 6 C is the rearview of Fig. 6 A;
Fig. 7 A is the second keypad structural representation of the utility model one embodiment;
Fig. 7 B is Fig. 7 A another side structural representation.
Wherein, Reference numeral
1 housing
2 upper covers
3 plastic press keys
31 matrixes
311 elasticity linking arms
3111 first elastic arms
31111 first ends
31112 second ends
31113 the 3rd ends
3112 second elastic arms
31121 first links
31122 second links
31123 bottoms
3113 the 3rd elastic arms
312 trigger key
3121 first trigger columns
3122 second trigger columns
313 keyways
314 center keypads
3141 center trigger columns
315 flange connectors
3151 connecting holes
316 matrix location structures
32 keypads
321 first keypads
3211 connecting keys
3212 first trigger column syndetons
3213 engaging boss
322 second keypads
3221 second trigger column syndetons
3222 second keypad position limiting structures
33 control circuit boards
331 trigger switches
Embodiment
Below in conjunction with accompanying drawing, structural principle of the present invention and operation principle are described in detail:
Referring to Fig. 1, Fig. 1 is the projector architecture schematic diagram of the utility model one embodiment.Projecting apparatus of the present utility model, comprise housing 1, upper cover 2, control circuit board 33 and plastic press key 3, described upper cover 2 is arranged on described housing 1, described control circuit board 33 is placed in described housing 1, on described control circuit board 33, be provided with the trigger switch 331 corresponding to described plastic press key 3, described plastic press key 3 is arranged on described upper cover 2 and with described control circuit board 33 and is connected.Because composition, structure, mutual alignment relation, annexation and the function etc. of this projecting apparatus miscellaneous part are more ripe prior art, therefore do not repeat at this, only plastic press key of the present utility model is described in detail below.
Referring to Fig. 2-Fig. 4, Fig. 2 is the plastic press key structural representation of the utility model one embodiment, the explosive view that Fig. 3 is Fig. 2, and Fig. 4 is that Fig. 2 is along the cutaway view of A-A.Plastic press key 3 of the present utility model, comprising:
One matrix 31, for disc-shaped structure, on described matrix 31, be provided with at least one group and trigger key 312, described in every group, trigger key 312 and include symmetrically arranged at least two trigger columns centered by the center of circle of matrix 31 (for example the first trigger column 3121), the described trigger column that triggers key 312 described in every group is all positioned at one and take on the same circumference that described matrix 31 center is the center of circle and be connected with described matrix 31 by elasticity linking arm 311.On described matrix 31, also can be provided with matrix location structure 316, for example, be a location notch, also can be provided with the flange connector 315 for installing on described matrix 31, on described flange connector 315, is provided with connecting hole 3151;
Keypad 32, is cirque structure, corresponding to triggering key 312 described in every group, arranges, and is provided with the syndeton for being connected with described matrix 31 and/or described trigger column on described keypad 32.Described matrix 31 and described keypad 32 are all preferably the plastic material part of integrative-structure.
Referring to Fig. 5 A-Fig. 5 E, Fig. 5 A is the basal body structure schematic diagram of the utility model one embodiment, and Fig. 5 B is Fig. 5 A another side structural representation, and Fig. 5 C is the front view of Fig. 5 A, and Fig. 5 D is the rearview of Fig. 5 A, and Fig. 5 E is the right view of Fig. 5 C.In the present embodiment, described triggering key 312 comprises that first group is triggered key, described first group of triggering key comprises at least two the first trigger columns 3121, and preferably described first group of triggering key comprises 4 the first trigger columns 3121, and the angle between adjacent described the first trigger column 3121 is 90 degree.Also can be set to as required 2,3 or 5 the first trigger columns 3121, this is not restricted.Described the first trigger column 3121 is positioned on the first circumference and by the first elastic arm 3111 and is connected with described matrix 31, corresponding to described first group, trigger key and be provided with the first keypad 321 (referring to Fig. 6 A-Fig. 6 C), on the bottom surface of described the first keypad 321, corresponding to described the first trigger column 3121, be provided with the first trigger column syndeton 3212.Described the first trigger column 3121 is preferably cylinder or prism structure, and the axis of this cylinder or prism structure is perpendicular to the plane of described matrix 31, and described the first trigger column syndeton 3212 is corresponding cylindrical sleeve or prism cover.During installation, cylindrical sleeve or prism cover have been connected to location and follow-up transmission of pressing external force with the first trigger column 3121 suits.
Wherein, described the first elastic arm 3111 is preferably m type structure, described m type structure comprises first end 31111, the second end 31112 and the 3rd end 31113 near described matrix center, first end 31111 is connected with described matrix 31 respectively with the second end 31112, and described the first trigger column 3121 is positioned at the 3rd end 31113 of described m type structure.Certainly, this first elastic arm 3111 can be also the cantilever syndeton of L-type, T-shaped structure or other shapes, as long as can meet the requirement that the first trigger column 3121 is pressed and resetted, this is not particularly limited.
Wherein, in order installing firmly, on the bottom surface of described the first keypad 321, to be also provided with for the connecting key 3211 with described matrix 31 engagement connections (referring to Fig. 6 A, Fig. 6 C), on described matrix 31, corresponding to described connecting key 3211, to be provided with keyway 313.For easy for installation and saving space, described connecting key 3211 is preferably the reed structure perpendicular to the card of described the first keypad 321, and the top of described reed is connected with described the first keypad 321, and the bottom of described reed is provided with engaging boss 3213.Preferred described connecting key 3211 is symmetrical arranged centered by the center of circle of described the first keypad 321.In the present embodiment, described connecting key 3211 is preferably 4, and the angle between adjacent described connecting key 3211 is 90 degree, certainly, also can arrange as required 2-6, is not limited in this respect.During installation, connecting key 3211 correspondences are installed in the keyway 313 on matrix 31 and can complete assembling and positioning.
In another embodiment of the utility model, described triggering key 312 also can comprise that second group is triggered key, described second group of triggering key comprises at least two the second trigger columns 3122, described the second trigger column 3122 is positioned on the second circumference and by the second elastic arm 3112 and is connected with described matrix 31, the diameter of described the second circumference is greater than described the first circumference, also be second group and trigger key mapping in first group of outer ring of triggering key, corresponding to described second group, trigger key 312 and be provided with the second keypad 322 (referring to Fig. 7 A, Fig. 7 B), on the bottom surface of described the second keypad 322, corresponding to described the second trigger column 3122, be provided with the second trigger column syndeton 3221, wherein, on described the second keypad 322, also can be provided with the second keypad position limiting structure 3222, in the present embodiment, this the second keypad position limiting structure 3222 is symmetrically arranged 4 boss that are positioned on the second keypad 322 excircles, certainly, to the quantity of the second keypad position limiting structure 3222 and not restriction of specific constructive form, as long as can realize, any existing structure of its limit function all can.Described the second trigger column 3122 is preferably cylinder or prism structure, and the axis of this cylinder or prism structure is perpendicular to the plane of described matrix 31, and described the second trigger column syndeton 3221 is corresponding cylindrical sleeve or prism cover.During installation, cylindrical sleeve or prism cover have been connected to location and follow-up transmission of pressing external force with the second trigger column 3122 suits.Described second group of triggering key preferably includes 4 the second trigger columns 3122, angle between adjacent described the second trigger column 3122 is 90 degree, and corresponding described the second trigger column 3122 is positioned on the same straight line by described matrix 31 centers of circle with described the first trigger column 3121, lay respectively at described the first trigger column 3121 and the adjacent in fact setting of described the second trigger column 3122 (being positioned on the same semi circular surface of matrix 31) on the first different circumference of from the same ray in matrix 31 centers of circle radius and the second circumference, or this first trigger column 3121 is oppositely arranged in fact (laying respectively on two semi circular surfaces of matrix 31) with described the second trigger column 3122, also in this most preferred embodiment, preferably 4 the first trigger columns 3121 and 4 the second trigger columns 3122 are the cross arrangement centered by the center of circle of matrix 31.Certainly, also can be set to as required 2,3 or 5 the second trigger columns 3122, this is not restricted.
Described the second elastic arm 3112 is preferably U-shaped structure, and the first link 31121 of described U-shaped structure is connected with described matrix 31 respectively with the second link 31122, and described the second trigger column 3122 is positioned at the bottom 31123 of described U-shaped structure.Certainly, this second elastic arm 3112 can be also the cantilever syndeton of L-type, T-shaped structure or other shapes, as long as can meet the requirement that the first trigger column 3121 is pressed and resetted, this is not particularly limited.
In the present embodiment, on described matrix 31, also can be provided with a center keypad 314 that protrudes from described matrix 31 planes, the setting that overlaps with the center of circle of described matrix 31 of the center of circle of described center keypad 314, the bottom of described center keypad 314 is provided with center trigger column 3141, this center trigger column 3141 can be for example cylinder, prism or cross column type structure, and described center keypad 314 is connected with described matrix 31 by the 3rd elastic arm 3113.Wherein, during for attractive in appearance and use, have good sense of touch, the upper surface of preferred described center keypad 314 and the upper surface of described keypad 32 are positioned at same plane.As shown in Figure 2, wherein the upper surface of this center keypad 314, the first keypad 321 and the second keypad 322 is all positioned at same plane, the external diameter of the internal diameter of this first keypad 321 and center keypad 314 is suitable, and the internal diameter of the external diameter of this first keypad 321 and the second keypad 322 is suitable.
In the utility model, the trigger column of all triggering keys 312 of keypad 32 correspondences is corresponding one by one with the trigger switch 331 of control circuit board in electronic installation 33 respectively, so that strength conduction completes switch triggering.This plastic press key 3 is not only applicable to projecting apparatus, also can be used as the control button use such as the remote controller of air-conditioning, television set etc., and to its concrete scope of application, there is no particular restriction.
During work, on keypad 32, apply pressing force, this pressing force extends along each trigger column axis direction, the trigger column of keypad 32 correspondences (for example the first trigger column 3121) is after top is stressed, elasticity linking arm 311 is moved by force direction along the moving trigger column of strength direction generation deformation band edge, after touching the trigger switch 331 of control circuit board 33, make switch opens, produce an electric signal transmission, after this externally applied forces is eliminated, elasticity linking arm 311 sets back and puts, trigger column leaves trigger switch 331 and sets back and put, and trigger switch 331 recovers closed conditions.This process completes the once triggering of button.
Certainly; the utility model also can have other various embodiments; in the situation that not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.
Claims (20)
1. a plastic press key, is characterized in that, comprising:
One matrix, for disc-shaped structure, on described matrix, be provided with at least one group and trigger key, described in every group, trigger key and include symmetrically arranged at least two trigger columns, the described trigger column that triggers key described in every group is all positioned on the same circumference that a center of take described matrix is the center of circle and by elasticity linking arm and is connected with described matrix;
Keypad, is cirque structure, corresponding to triggering key setting described in every group, is provided with the syndeton for being connected with described matrix and/or described trigger column on described keypad.
2. plastic press key as claimed in claim 1, it is characterized in that, described triggering key comprises that first group is triggered key, described first group of triggering key comprises at least two the first trigger columns, described the first trigger column is positioned on the first circumference and by the first elastic arm and is connected with described matrix, corresponding to described first group, trigger key and be provided with the first keypad, on the bottom surface of described the first keypad, corresponding to described the first trigger column, be provided with the first trigger column syndeton.
3. plastic press key as claimed in claim 2, it is characterized in that, described the first elastic arm is m type structure, described m type structure has first end, the second end and the 3rd end near the center of described matrix, wherein said first end is connected with described matrix respectively with described the second end, and described the first trigger column is positioned at described the 3rd end.
4. plastic press key as claimed in claim 2 or claim 3, is characterized in that, is also provided with for the connecting key with described matrix engagement connection on the bottom surface of described the first keypad, on described matrix, corresponding to described connecting key, is provided with keyway.
5. plastic press key as claimed in claim 4, is characterized in that, described connecting key is the reed structure perpendicular to the card of described the first keypad, and the top of described reed is connected with described the first keypad, and the bottom of described reed is provided with engaging boss.
6. plastic press key as claimed in claim 5, is characterized in that, described connecting key is symmetrical arranged centered by the center of circle of described the first keypad.
7. plastic press key as claimed in claim 6, is characterized in that, described connecting key is 4, and the angle between adjacent described connecting key is 90 degree.
8. the plastic press key as described in claim 2,3,5,6 or 7, is characterized in that, described first group of triggering key comprises 4 the first trigger columns, and the angle between adjacent described the first trigger column is 90 degree.
9. plastic press key as claimed in claim 8, is characterized in that, described the first trigger column is cylinder or prism structure, and described the first trigger column syndeton is corresponding cylindrical sleeve or prism cover.
10. the plastic press key as described in claim 2,3,5,6,7 or 9, it is characterized in that, described triggering key also comprises that second group is triggered key, described second group of triggering key comprises at least two the second trigger columns, described the second trigger column is positioned on the second circumference and by the second elastic arm and is connected with described matrix, the diameter of described the second circumference is greater than described the first circumference, corresponding to described second group, trigger key and be provided with the second keypad, on the bottom surface of described the second keypad, corresponding to described the second trigger column, be provided with the second trigger column syndeton.
11. plastic press keys as claimed in claim 10, is characterized in that, described the second elastic arm is U-shaped structure, and the first link of described U-shaped structure is connected with described matrix respectively with the second link, and described the second trigger column is positioned at the bottom of described U-shaped structure.
12. plastic press keys as claimed in claim 11, is characterized in that, described the second trigger column is cylinder or prism structure, and described the second trigger column syndeton is corresponding cylindrical sleeve or prism cover.
13. plastic press keys as claimed in claim 12, it is characterized in that, described second group of triggering key comprises 4 the second trigger columns, angle between adjacent described the second trigger column is 90 degree, and corresponding described the second trigger column and described the first trigger column are positioned on the same straight line by the described matrix center of circle.
14. plastic press keys as described in claim 11,12 or 13, is characterized in that, are also provided with the second keypad position limiting structure on described the second keypad.
15. plastic press keys as described in claim 1,2,3,5,6,7,9,11,12 or 13, is characterized in that, are also provided with the flange connector for installing on described matrix, on described flange connector, are provided with connecting hole.
16. plastic press keys as claimed in claim 15, is characterized in that, are also provided with matrix location structure on described matrix.
17. plastic press keys as described in claim 1,2,3,5,6,7,9,11,12,13 or 16, it is characterized in that, on described matrix, be also provided with a center keypad that protrudes from described matrix plane, the setting that overlaps with the center of circle of described matrix of the center of circle of described center keypad, the bottom of described center keypad is provided with center trigger column, and described center keypad is connected with described matrix by the 3rd elastic arm.
18. plastic press keys as claimed in claim 17, is characterized in that, the upper surface of described center keypad and the upper surface of described keypad are positioned at same plane.
19. plastic press keys as described in claim 1,2,3,5,6,7,9,11,12,13 or 16, is characterized in that the plastic material part that described matrix and described keypad are all structure as a whole.
20. 1 kinds of projecting apparatus, comprise housing, upper cover, control circuit board and plastic press key, described upper cover is arranged on described housing, described control circuit board is placed in described housing, on described control circuit board, be provided with the trigger switch corresponding to described plastic press key, described plastic press key is arranged on described and covers and be connected with described control circuit board, it is characterized in that, described plastic press key is the plastic press key described in the claims 1-19 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368903.0U CN203941838U (en) | 2014-07-04 | 2014-07-04 | A kind of plastic press key and there is the projecting apparatus of this button |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420368903.0U CN203941838U (en) | 2014-07-04 | 2014-07-04 | A kind of plastic press key and there is the projecting apparatus of this button |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203941838U true CN203941838U (en) | 2014-11-12 |
Family
ID=51861137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420368903.0U Expired - Fee Related CN203941838U (en) | 2014-07-04 | 2014-07-04 | A kind of plastic press key and there is the projecting apparatus of this button |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203941838U (en) |
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2014
- 2014-07-04 CN CN201420368903.0U patent/CN203941838U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141112 Termination date: 20170704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |