CN212648098U - Miniature light guide type key switch - Google Patents
Miniature light guide type key switch Download PDFInfo
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- CN212648098U CN212648098U CN202021787077.5U CN202021787077U CN212648098U CN 212648098 U CN212648098 U CN 212648098U CN 202021787077 U CN202021787077 U CN 202021787077U CN 212648098 U CN212648098 U CN 212648098U
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- magnetic element
- key switch
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- key
- shaft
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Abstract
The utility model discloses a miniature light guide formula key switch, the inside locating part that is equipped with of key seat, the coil is fixed to be set up in the locating part outside, be equipped with the through-hole in the middle of the locating part, the axis is worn to establish in the through-hole, be equipped with reset spring between bellying and the locating part, second magnetic element fixes in first magnetic element top, the key cap is fixed with the axis, the jackshaft is located to first magnetic element cover, and first magnetic element top supports with the key cap bottom and lean on, certain clearance has between first magnetic element and the second magnetic element, and the magnetic force between first magnetic element and the second magnetic element more than or equal to 20% of first magnetic element gravity itself; the two opposite sides of the bottom of the limiting part are respectively and fixedly provided with a transmitting device and a receiving device. The beneficial effects of the utility model reside in that: through reasonable structural design, the volume of the miniature light guide type key switch can be smaller.
Description
Technical Field
The utility model relates to a key switch technical field, concretely relates to miniature light guide formula key switch.
Background
The existing micro light guide type key switch has a large volume and is difficult to meet different market requirements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a miniature light guide type key switch for overcoming the defects of the prior art.
A micro light guide type key switch comprises a first magnetic element, a second magnetic element, a center shaft, a key cap, a coil, a key seat and an upper cover, wherein the key seat and the upper cover are mutually fixed, a limiting part is arranged inside the key seat, the coil is fixedly arranged on the outer side of the limiting part, a through hole is formed in the middle of the limiting part, the center shaft penetrates through the through hole, the center shaft comprises a top shaft, a middle shaft and a protruding part, the top shaft is fixedly connected with the middle shaft, the protruding part is fixedly arranged on the outer side of the middle shaft, a reset spring is arranged between the protruding part and the limiting part, the second magnetic element is fixedly arranged above the first magnetic element, the key cap is fixedly arranged on the center shaft, the middle shaft is sleeved with the first magnetic element, the top of the first magnetic element is abutted against the bottom of the key cap, a certain gap is formed between the first magnetic element and the second magnetic element, and the magnetic force between the first magnetic element and the second magnetic element (ii) a And the two opposite sides of the bottom of the limiting part are respectively and fixedly provided with a transmitting device and a receiving device.
As an optimization of the utility model: the deviation between the middle position of the stroke of the bottom of the middle shaft and the central line of the transmitting device and the receiving device is not more than 20 percent of the stroke of the middle shaft.
As an optimization of the utility model: the bottom of the inner side of the limiting part is provided with a light barrier, and the bottom of the light barrier is higher than the transmitting device and the receiving device.
As an optimization of the utility model: the limiting piece and the light barrier are integrally formed.
As an optimization of the utility model: the key seat, the limiting piece and the light barrier are integrally formed.
As an optimization of the utility model: the second magnetic element is a silicon steel sheet, a powder alloy or industrial pure iron.
As an optimization of the utility model: the first magnetic element is a magnet.
As an optimization of the utility model: the key seat is clamped with the upper cover.
As an optimization of the utility model: the magnetic force between the first magnetic element and the second magnetic element is less than or equal to the gravity of the first magnetic element.
As an optimization of the utility model: the axis and the key cap are integrally formed.
Compared with the prior art, the beneficial effects of the utility model reside in that: through reasonable arrangement of the magnetic force between the first magnetic element and the second magnetic element, the position relation between the first magnetic element and the coil, and the stroke of the middle shaft and the positions of the transmitting device and the receiving device, the volume of the miniature light guide type key switch can be smaller, and the requirement of miniaturization is met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a first view angle structure of a micro light guide type key switch provided by the present invention.
Fig. 2 is a schematic view of a second view angle structure of a micro light guide type key switch provided by the present invention.
Fig. 3 is a schematic view of an explosion structure of a micro light guide type key switch provided by the present invention.
Fig. 4 is a schematic diagram of a transverse cross-section structure of a middle position of a micro light guide type key switch provided by the present invention.
Fig. 5 is a schematic view of the longitudinal section structure of the middle position of a micro light guide type key switch provided by the present invention.
Fig. 6 is a schematic view of an upper cover structure of a micro light guide type key switch provided by the present invention.
Fig. 7 is a schematic view of a first view angle structure of a key pad of a micro light guide type key switch provided by the present invention.
Fig. 8 is a schematic diagram of a second view angle structure of a key pad of a micro light guide type key switch provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to explain the technical solution of the present invention, the following description is made by using specific examples.
Examples
Referring to fig. 1-8, the present invention provides a micro light guide type key switch, including a first magnetic element 100, a second magnetic element 200, a middle shaft 300, a key cap 400, a coil 500, a key seat 600 and an upper cover 700, wherein the key seat 600 and the upper cover 700 are fixed to each other, a limiting member 601 is disposed inside the key seat 600, the coil 500 is fixedly disposed outside the limiting member 601, a through hole is disposed in the middle of the limiting member 601, the middle shaft 300 is inserted into the through hole, the middle shaft 300 includes a top shaft 301, a middle shaft 302 and a protrusion 303, the top shaft 301 and the middle shaft 302 are fixedly connected, the protrusion 303 is fixed outside the middle shaft 302, a return spring is disposed between the protrusion 303 and the limiting member 601, the second magnetic element 200 is fixed above the first magnetic element 100, the key cap 400 is fixed to the middle shaft 300, the first magnetic element 100 is sleeved on the middle shaft 302, the top of the first magnetic element 100 abuts against the bottom of the keycap 400, a certain gap is formed between the first magnetic element 100 and the second magnetic element 200, and the magnetic force between the first magnetic element 100 and the second magnetic element 200 is greater than or equal to 20% of the gravity of the first magnetic element 100; the two opposite sides of the bottom of the limiting member 601 are respectively and fixedly provided with a transmitting device 800 and a receiving device 900.
The utility model discloses in, the deviation between the stroke intermediate position of axis bottom and emitter and receiver's central line (transmission and received light center) is no longer than the 20% of axis stroke.
The utility model discloses in, the inboard bottom of locating part is equipped with the barn door 602, and barn door 602 bottom is higher than emitter 800 and receiving arrangement 900.
The utility model discloses in, locating part 601 with barn door 602 integrated into one piece.
The utility model discloses in, key seat 600 locating part 601 the barn door 602 integrated into one piece.
In the present invention, the second magnetic element 200 is a silicon steel sheet, a powder alloy, or an industrial pure iron.
In the present invention, the first magnetic element 100 is a magnet.
In the present invention, the key seat 600 is connected to the upper cover 700.
In the present invention, the magnetic force between the first magnetic element 100 and the second magnetic element 200 is less than or equal to the gravity of the first magnetic element itself.
The utility model discloses in, axis 300 and key cap 400 integrated into one piece.
The beneficial effects of the utility model reside in that: through reasonably setting the magnetic force between the first magnetic element and the second magnetic element, the position relationship between the first magnetic element and the coil and the position relationship between the stroke of the middle shaft and the transmitting device and the receiving device, the volume of the miniature light guide type key switch can be smaller, and the requirement of miniaturization is met.
The above description is only exemplary of the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention should be considered within the scope of the present invention.
Claims (10)
1. A micro light guide type key switch is characterized by comprising a first magnetic element, a second magnetic element, a central shaft, a key cap, a coil, a key seat and an upper cover, wherein the key seat and the upper cover are mutually fixed, a limiting part is arranged in the key seat, the coil is fixedly arranged on the outer side of the limiting part, a through hole is formed in the middle of the limiting part, the central shaft penetrates through the through hole, the central shaft comprises a top shaft, a middle shaft and a convex part, the top shaft is fixedly connected with the middle shaft, the convex part is fixedly arranged on the outer side of the middle shaft, a reset spring is arranged between the convex part and the limiting part, the second magnetic element is fixed above the first magnetic element, the key cap is fixed with the central shaft, the middle shaft is sleeved with the first magnetic element, the top of the first magnetic element is abutted against the bottom of the key cap, and a certain gap is formed between the first, the magnetic force between the first magnetic element and the second magnetic element is more than or equal to 20% of the gravity of the first magnetic element; and the two opposite sides of the bottom of the limiting part are respectively and fixedly provided with a transmitting device and a receiving device.
2. The miniature light-guide type key switch of claim 1, wherein the deviation between the middle position of the stroke of the bottom of the central shaft and the central line of the transmitting device and the receiving device is not more than 20% of the stroke of the central shaft.
3. The micro light-guide type key switch according to claim 1, wherein a light barrier is disposed at the bottom of the inner side of the position-limiting member, and the bottom of the light barrier is higher than the emitting means and the receiving means.
4. The micro light-guide type key switch according to claim 3, wherein the stopper and the light barrier are integrally formed.
5. The micro light-guide type key switch according to claim 3, wherein the key base, the position limiter and the light barrier are integrally formed.
6. The micro light-guide type key switch according to claim 1, wherein the second magnetic element is a silicon steel sheet, a powder alloy, or an industrial pure iron.
7. The miniature light-guide keyswitch of claim 1, wherein the first magnetic element is a magnet.
8. The miniature light guide key switch of claim 1, wherein said key base and said top cover are snap-fit.
9. The micro light-guide type key switch according to claim 1, wherein the magnetic force between the first magnetic element and the second magnetic element is less than or equal to the gravity of the first magnetic element.
10. The miniature light guide key switch of claim 1, wherein the central shaft and the key cap are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787077.5U CN212648098U (en) | 2020-08-25 | 2020-08-25 | Miniature light guide type key switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021787077.5U CN212648098U (en) | 2020-08-25 | 2020-08-25 | Miniature light guide type key switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212648098U true CN212648098U (en) | 2021-03-02 |
Family
ID=74786277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021787077.5U Active CN212648098U (en) | 2020-08-25 | 2020-08-25 | Miniature light guide type key switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212648098U (en) |
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2020
- 2020-08-25 CN CN202021787077.5U patent/CN212648098U/en active Active
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