CN109841438B - Dustproof structure of micro switch - Google Patents
Dustproof structure of micro switch Download PDFInfo
- Publication number
- CN109841438B CN109841438B CN201910030980.2A CN201910030980A CN109841438B CN 109841438 B CN109841438 B CN 109841438B CN 201910030980 A CN201910030980 A CN 201910030980A CN 109841438 B CN109841438 B CN 109841438B
- Authority
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- China
- Prior art keywords
- upper cover
- terminal
- dust
- contact
- dustproof
- 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.)
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Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 7
- 239000000428 dust Substances 0.000 abstract description 23
- 230000004888 barrier function Effects 0.000 abstract description 4
- 239000011435 rock Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
Landscapes
- Switch Cases, Indication, And Locking (AREA)
- Push-Button Switches (AREA)
Abstract
The invention relates to a dustproof structure of a micro switch, which comprises a base and an upper cover, wherein the upper cover is arranged on the base, a mounting hole is pre-formed in the upper cover, a pressing piece is arranged in the mounting hole, the upper end of the pressing piece extends out of the upper end face of the upper cover, the pressing piece comprises a pocket table for blocking dust and a button connected with the pocket table, a groove is formed between the button and the pocket table, a dustproof bulge extending downwards is arranged at the lower part of the mounting hole, and the dustproof bulge extends into the groove. The dust-proof structure of the micro switch is ingenious in design, dust entering the switch from the gap between the upper cover and the button and between the upper cover and the pocket table is effectively prevented and reduced, and stability and service life of the micro switch are improved. The spacing arch that sets up on the upper cover constitutes multichannel dustproof barrier, effectively blocks and reduces the dust from upper cover and button, get into inside the switch with pocket platform complex clearance, effectively guarantees simultaneously that the push piece slides steadily smoothly from top to bottom, can not produce to rock, and work is more reliable and stable.
Description
Technical Field
The invention relates to the field of switches, in particular to a dust-proof structure of a micro switch.
Background
The micro switch is a contact mechanism having a minute contact distance and a snap action mechanism, and performs a switching operation with a predetermined stroke and a predetermined force, and is called a sensitive switch because the contact distance of the switch is relatively small. The micro switch is used for automatic control, safety protection and the like in equipment needing frequent circuit switching, and is widely applied to the military fields of electronic equipment, instruments and meters, mines, power systems, household appliances, electrical equipment, aerospace, ships, missiles, tanks and the like. Microswitches are used as a control element, and often need to cooperate with other elements to turn on or off a signal or circuit.
Because the internal space of the micro-switch is small, the action precision of each part is higher, and the sensitivity is greatly reduced if dust exists in the micro-switch. The existing shell and pressing piece of the micro switch are provided with gaps, no corresponding dustproof structure exists, and dust and the like easily enter the shell from the gaps to influence the normal operation of the switch. In the prior art, the pressing piece of dustproof and waterproof structure comprises button and silica gel, and it not only can't realize that the whole upper cover that breaks away from of pressing piece carries out the pushing movement, but also still needs to additionally adopt silica gel or similar elasticity extension material in order to realize dustproof, has can't satisfy the feel requirement of the experience of harsh user increasingly.
Disclosure of Invention
In view of the above, the present invention provides a dust-proof structure of a micro switch, which is smart in design and effectively prevents and reduces dust from entering the switch from the gap between the upper cover and the button, and between the upper cover and the pocket.
The aim of the invention is achieved by the following technical scheme:
the utility model provides a dust prevention structure of micro-gap switch, includes base and upper cover, and the upper cover is installed on the base, is equipped with a mounting hole in advance on the upper cover, installs the push piece in the mounting hole, and the upper end of this push piece extends the upper cover up end, the push piece is including being used for stopping the pocket platform of dust and the button of being connected with the pocket platform, be equipped with one or more recess between button and the pocket platform.
Preferably, the lower part of the mounting hole is provided with one or more dust-proof bulges extending downwards, and the dust-proof bulges extend into the grooves.
Further, the dustproof structure of the micro switch further comprises a terminal inserted on the base and a spring piece in contact connection with the terminal.
Preferably, the elastic piece comprises a tongue piece arranged in or adjacent to the middle part, an elastic piece contact arranged on one side of the tongue piece and a bearing area arranged on the other side of the tongue piece, wherein the bearing area is contacted with the pressing piece.
Preferably, the outer wall and the upper end face of the upper part of the base are provided with dustproof step faces which are wound around the outer edge of the upper part of the base, and the inner wall and the lower end face of the lower part of the upper cover are provided with sealing step faces which are in close contact with the dustproof step faces.
Further, the base is also provided with an inverted buckle, the upper cover is also provided with a hanging hole matched with the inverted buckle, and the dustproof step surface is tightly contacted with the sealing step surface when the inverted buckle is clamped into the hanging hole.
Preferably, the upper cover lower surface is provided with downwardly extending spacing arch, spacing arch encircle in the pocket platform periphery and with pocket platform outer wall sliding contact.
Preferably, the button extends out of a mounting hole having the same sectional shape as the upper portion of the button.
Further, the terminal comprises a first terminal, a second terminal and a third terminal which are inserted on the base, the first terminal is in contact connection with the spring plate, and the spring plate contact can be in contact with the second terminal or the third terminal in the stroke range of the tongue piece.
Preferably, the pressing piece further comprises a lower protrusion in contact with the bearing area, a first cross rod for supporting the elastic sheet is arranged on the upper portion of the first terminal, a groove for the lower protrusion to descend is formed in the first cross rod, a second cross rod is arranged on the upper portion of the second terminal, a terminal contact for contacting with the elastic sheet contact to conduct signals is arranged on the second cross rod, and a third cross rod is arranged on the upper portion of the third terminal.
Preferably, the third cross bar is located above the second cross bar, and the spring contact is disposed between the second cross bar and the third cross bar, and the spring contact may contact the second terminal or the third terminal in a travel range of the tongue piece.
The pressing piece descends for a preset distance, and the spring contact is contacted with the terminal contact on the second cross rod in the travel range of the tongue piece; the pressing piece moves up for a preset distance, and the elastic piece contact is contacted with the third cross rod in the travel range of the tongue piece.
Compared with the prior art, the invention has the beneficial effects that:
in the prior art, the pressing piece of the dustproof and waterproof structure consists of the pressing handle and the silica gel, and cannot be separated from the pressing piece integrally to perform the pressing movement, but in the dustproof structure of the micro switch, the silica gel does not need to be introduced through ingenious design, the dustproof pocket table can be pressed down integrally, the upper surface of the pressing piece is provided with the groove, the lower surface of the mounting hole is provided with the bulge, the bulge is clamped into the groove, dust prevention is realized through the cooperation of the groove and the bulge, the dust is effectively prevented from entering the inside from the connecting part between the pressing piece and the upper cover and between the upper cover and the base, and the stability and the service life of the micro switch are improved. The limiting bulge on the upper cover can form a plurality of dustproof barriers according to actual needs, so that dust can be effectively blocked and reduced from entering the switch from the gap between the upper cover and the button and between the upper cover and the pocket table, and meanwhile, the pressing piece can be effectively ensured to slide stably and smoothly up and down, shaking can not be generated, and the work is more stable and reliable.
Drawings
Fig. 1 is a structural diagram of a dust-proof structure of a micro switch in embodiment 1.
Fig. 2 is an exploded view of a dust-proof structure of a micro switch in embodiment 1.
Fig. 3 is a cross-sectional view of a dust-proof structure of a micro switch in embodiment 1.
Fig. 4 is a cross-sectional view of a dust-proof structure of a micro switch in embodiment 1.
Fig. 5 is a cross-sectional view of a dust-proof structure of a micro switch in embodiment 2.
Fig. 6 is a cross-sectional view of a dust-proof structure of a micro switch in embodiment 2.
Fig. 7 is a three-dimensional perspective view of the pressing member in embodiment 2.
Fig. 8 is a three-dimensional perspective view of the pressing member in embodiment 3.
Fig. 9 is a three-dimensional perspective view of the pressing member in embodiment 4.
Fig. 10 is a three-dimensional perspective view of the pressing member in embodiment 5.
Fig. 11 is a three-dimensional perspective view of the pressing member in example 6.
Fig. 12 is a three-dimensional perspective view of the pressing member in example 7.
Fig. 13 is a three-dimensional perspective view of the pressing member in example 8.
Fig. 14 is a three-dimensional perspective view of the pressing member in embodiment 9.
Fig. 15 is a three-dimensional perspective view of the pressing member in embodiment 10.
Fig. 16 is a three-dimensional perspective view of the pressing member in example 11.
Fig. 17 is a three-dimensional perspective view of the pressing member in example 12.
Fig. 18 is a cross-sectional view of a dust-proof structure of a micro switch in example 13.
Fig. 19 is an enlarged view of area a in fig. 18.
Description of the embodiments
The present invention will be described in further detail below with reference to specific embodiments and drawings for the understanding of those skilled in the art.
Referring to fig. 1 to 4, embodiment 1 of the present invention includes:
the dustproof structure of the micro switch comprises a base 10, an upper cover 20, a first terminal 50, a second terminal 60, a third terminal 70 and a spring piece 30 which are inserted on the base 10 and are in contact connection with the first terminal 50, wherein the upper cover 20 is arranged on the base 10, a mounting hole 21 is preset in the upper cover 20, a pressing piece 40 is arranged in the mounting hole 21, the upper end of the pressing piece 40 extends out of the upper end surface of the upper cover 20, the pressing piece 40 comprises a pocket table 41 for blocking dust and a button 42 connected with the pocket table 41, a groove 43 is arranged between the button 42 and the pocket table 41, a dustproof bulge 22 which extends downwards is arranged at the lower part of the mounting hole 21, and the dustproof bulge 22 extends into the groove 43; the spring 30 includes a tongue 31 disposed in or adjacent to the middle, a spring contact 32 disposed on one side of the tongue 31, and a force bearing area 33 disposed on the other side of the tongue 31, where the force bearing area 33 contacts the pressing member 40, and the spring contact 32 can contact the second terminal 60 or the third terminal 70 within the range of travel of the tongue 31. The pressing piece 40 further comprises a lower protrusion 44 in contact with the bearing area 33, a first cross rod 51 for supporting the elastic piece 30 is arranged on the upper portion of the first terminal 50, a window is arranged beside the bearing area 33 of the elastic piece 30, the elastic piece is arranged on the first cross rod 51 through the window, specifically, the front end of the tongue piece 31 is clamped at the concave position of the side wall of the first cross rod 51, a groove 52 for the lower protrusion 44 to descend is formed in the first cross rod 51, a second cross rod 61 is arranged on the upper portion of the second terminal 60, a terminal contact for contacting with the elastic piece contact 32 to conduct signals is arranged on the second cross rod 61, a third cross rod 71 is arranged on the upper portion of the third terminal 70, the third cross rod 71 is located above the second cross rod 61, and the elastic piece contact 32 is arranged between the second cross rod 61 and the third cross rod 71.
In a free state, the pressing part pocket table bulge 45 is abutted on the inner wall of the upper cover, the dustproof bulge (22) is connected with the side wall of the button, and the limit bulge 24 is connected with the outer wall of the pocket table, so that a complete dustproof structure is formed. When the push-down operation is performed, when dust enters the movable gap between the pressing piece 40 and the upper cover 20, the dust falls into the groove 43, the dust-proof bulge 22 and the limiting bulge 24 can block the dust, the dust is blocked in the groove 43, and the dust is effectively blocked and reduced from entering the switch from the gap between the upper cover and the button and between the upper cover and the pocket table.
In a natural state, the pressing piece pocket boss 45 is abutted against the inner wall of the upper cover, and when the pressing piece 40 is pressed down, the whole pressing piece is separated from the upper cover 20 by a certain distance, and the spring piece contact 32 is contacted with the terminal contact on the second cross rod 61 in the travel range of the tongue piece 31; the pressing member 40 moves upward a distance, and the spring contact 32 is separated from the terminal contact in the stroke range of the tongue piece 31 and contacts the third cross bar 71. By pressing down or releasing the pressing piece 40, the spring piece is pushed to move down or up, so that the switch circuit is turned on and off.
In addition, because the upper cover 20 and the base 10 are connected as a whole through the later-stage buckle, in order to prevent dust from entering the micro switch from the gap between the upper cover 20 and the base 10, the outer wall and the upper end surface of the upper part of the base 10 are provided with dustproof step surfaces 11 around the outer periphery of the upper part of the base 10, and the inner wall and the lower end surface of the lower part of the upper cover 20 are provided with sealing step surfaces closely contacted with the dustproof step surfaces 11.
In order to ensure the stability of the connection structure between the base 10 and the upper cover 20 and prevent dust from entering due to the enlarged gap between the base 10 and the upper cover 20, the base 10 is further provided with a back-off 12, the upper cover 20 is further provided with a hanging hole 23 matched with the back-off 12, the dust-proof step surface 11 is tightly contacted with the sealing step surface when the back-off 12 is clamped in the hanging hole 23, and the back-off 12 is clamped in the hanging hole 23 to prevent the upper cover 20 from falling off the base 10.
In addition, in order to ensure that the pressing piece 40 slides up and down smoothly, shaking is not generated during sliding, the stable and reliable performance is improved, the lower surface of the upper cover 20 is provided with a limiting protrusion 24 extending downwards, the limiting protrusion 24 surrounds the periphery of the pocket table 41 and is in sliding contact with the outer wall of the pocket table 41, and the limiting protrusion 24 plays a good guiding and limiting role on the up and down movement of the pressing piece 40.
The button 42 extends to the outside of the mounting hole 21, the cross section of the mounting hole 21 is cross-shaped, the pocket 41 is circular, and the button 42 is round-head cross-shaped.
Referring to fig. 5-7, embodiment 2 of the present invention includes:
unlike embodiment 1, the pressing member 240 of embodiment 2 includes a circular pocket 241, a cross-shaped button 242, a first groove 243, a first pocket protrusion 244, a second groove 245, a second pocket protrusion 246, and a lower protrusion 247, and the upper cover is provided with a first dust-proof protrusion 221, a second dust-proof protrusion 223, and a limiting protrusion 225, a first recess 222 is formed between the first dust-proof protrusion 221 and the second dust-proof protrusion 223, and a second recess 224 is formed between the second dust-proof protrusion 223 and the limiting protrusion 225. When the pressing member is not pressed, the first dust-proof protrusion 221 protrudes into the first groove 243, the first platform protrusion 244 protrudes into the first recess 222, the second dust-proof protrusion 223 protrudes into the second groove 245, and the second platform protrusion 246 protrudes into the second recess 224, wherein the outer side wall of the second platform protrusion 246 and the side wall of the limiting protrusion 225 are in contact with each other or are adjacent to each other. In this embodiment 2, two dust sealing barriers are provided, so that the occurrence of dust entering the switch from the gap between the pocket table and the upper cover is further reduced.
Referring to fig. 8, embodiment 3 of the present invention includes:
unlike embodiment 1, the pressing member 340 of embodiment 3 includes a square pocket 341, a button 342 having a rounded cross shape, and a groove 343, the cross section of the mounting hole is cross-shaped, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 9, embodiment 4 of the present invention includes:
unlike embodiment 1, the pressing member 440 of embodiment 4 includes a circular pocket 441, a square cross-shaped button 442, and a groove 443, the cross-section of the mounting hole is cross-shaped, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 10, embodiment 5 of the present invention includes:
unlike embodiment 1, the pressing member 540 of embodiment 5 includes a square pocket 541, a square cross-shaped button 542, and a groove 543, the cross-section of the mounting hole is cross-shaped, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 11, embodiment 6 of the present invention includes:
unlike embodiment 1, the pressing member 640 in embodiment 6 includes a circular pocket 641, a button 642 having a straight round head, and a groove 643, and the cross section of the mounting hole is straight, and the other structures are the same as the dust-proof structure of the micro switch in embodiment 1.
Referring to fig. 12, embodiment 7 of the present invention includes:
unlike embodiment 1, the pressing member 740 of embodiment 7 includes a circular pocket 741, a circular button 742, and a groove 743, and the mounting hole has a circular cross section, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 13, embodiment 8 of the present invention includes:
unlike embodiment 1, the pressing member 840 of embodiment 8 includes a circular pocket 841, a button 842 having a rounded cross shape, and a recess 843, wherein the button 842 includes a button outer portion having a circular cylinder shape and a button inner portion having a cross-shaped cylinder shape, which is positioned inside and outside the button, and the mounting hole has a circular cross section, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 14, embodiment 9 of the present invention includes:
unlike embodiment 1, the pressing member 940 of embodiment 9 includes a square pocket 941, a button 942 having a rounded cross shape, and a recess 943, the button 942 includes a button base 9421 having a cylindrical shape and a button upper portion 9422 having a cylindrical shape on an upper surface of the button base 9421, the button upper portion has a cross-shaped cross section, the mounting hole has a circular cross section, and the remaining structure is the same as the dust-proof structure of the micro switch of embodiment 1.
Referring to fig. 15, embodiment 10 of the present invention includes:
unlike embodiment 1, in embodiment 10, the pressing member 1040 includes a square pocket table 1041, a button 1042 with a rounded cross shape, and a groove 1043, the button 1042 includes a button base 10421 with a cylindrical shape, and a button upper portion 10422 with a cylindrical shape on an upper surface of the button base 10421, the cross section of the button upper portion is in a straight shape, the cross section of the mounting hole is in a circular shape, and the remaining structures are the same as the dust-proof structure of the micro switch in embodiment 1.
Referring to fig. 16, embodiment 11 of the present invention includes:
unlike embodiment 1, the pressing member 1140 in embodiment 11 includes a circular pocket 1141, a half-moon-shaped T-shaped button 1042, and a groove 1043, and the cross section of the mounting hole is half-moon-shaped T-shaped, and the remaining structure is the same as the dust-proof structure of the micro switch in embodiment 1.
Referring to fig. 17, embodiment 12 of the present invention includes:
unlike embodiment 1, the pressing member 1240 in embodiment 12 includes a circular pocket 1241, a half-moon-shaped cross-shaped button 1242, and a groove 1243, and the cross section of the mounting hole is a half-moon-shaped cross, and the remaining structure is the same as the dust-proof structure of the micro switch in embodiment 1.
Referring to fig. 18-19, embodiment 13 of the present invention includes:
in embodiment 13, the pressing member 1340 includes a pocket, a button 1342, and a groove 1343, a pocket protrusion 1341 is provided on the pocket, a dust-proof protrusion 1321 and a limit protrusion 1322 are provided on the upper cover 1320, a tiny first gap 1301 is provided between the side wall of the button 1342 and the dust-proof protrusion 1321, a tiny second gap 1302 is provided between the dust-proof protrusion 1321 and the pocket protrusion 1341, and a tiny third gap 1303 is provided between the pocket protrusion 1341 and the limit protrusion 1322.
In other embodiments, the number of grooves on the pressing member may be greater than two, and the dust-proof protrusions of the upper cover may be greater than two, according to actual needs.
In the prior art, the pressing piece of dustproof and waterproof structure comprises pressing handle + silica gel, can not wholly break away from and carry out the motion of pushing down, but at the dustproof structure of above-mentioned micro-gap switch of this embodiment 1-12, through ingenious design, need not to introduce silica gel, the dustproof pocket platform can wholly push down the motion to effectively block and reduce the dust from upper cover and button, get into inside the switch with pocket platform complex clearance, improve micro-gap switch's stability and life. The spacing arch that sets up on the upper cover constitutes multichannel dustproof barrier, effectively blocks and reduces the dust from upper cover and button, get into inside the switch with pocket platform complex clearance, effectively guarantees simultaneously that the push piece slides steadily smoothly from top to bottom, can not produce to rock, and work is more reliable and stable.
While the invention has been described in conjunction with the specific embodiments above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, all such alternatives, modifications, and variations are included within the spirit and scope of the following claims.
Claims (8)
1. The utility model provides a dustproof structure of micro-gap switch, its characterized in that includes base (10) and upper cover (20), and upper cover (20) are installed on base (10), have preset a mounting hole (21) on upper cover (20), install push piece (40) in mounting hole (21), this push piece (40) upper end extends upper cover (20) up end, push piece (40) include be used for blocking pocket platform (41) and with pocket platform (41) connected button (42), be equipped with one or more recess (43) between button (42) and pocket platform (41), mounting hole (21) lower part is provided with one or more dustproof protruding (22) of downwardly extending, dustproof protruding (22) extend into recess (43); the outer wall and the upper end face of the upper part of the base (10) are provided with dustproof step faces (11) which are wound around the outer edge of the upper part of the base (10), and the inner wall and the lower end face of the lower part of the upper cover (20) are provided with sealing step faces which are tightly contacted with the dustproof step faces (11); the base (10) is also provided with an inverted buckle (12), the upper cover (20) is also provided with a hanging hole (23) matched with the inverted buckle (12), and the dustproof step surface (11) is tightly contacted with the sealing step surface when the inverted buckle (12) is clamped into the hanging hole (23); the lower surface of the upper cover (20) is provided with a limiting bulge (24) which extends downwards, and the limiting bulge (24) surrounds the periphery of the pocket table (41) and is in sliding contact with the outer wall of the pocket table (41).
2. The dust-proof structure of a micro switch according to claim 1, further comprising a terminal inserted in the base and a spring piece (30) in contact with the terminal.
3. The dust-proof structure of a micro switch according to claim 2, wherein the spring plate (30) comprises a tongue plate (31) disposed at or near the middle, a spring plate contact (32) disposed at one side of the tongue plate (31), and a bearing area (33) disposed at the other side of the tongue plate (31), the bearing area (33) being in contact with the pressing member (40).
4. The dust-proof structure of a micro switch according to claim 1, wherein the button (42) extends out of the mounting hole (21).
5. A dust-proof structure of a micro switch according to claim 3, wherein the terminals comprise a first terminal (50), a second terminal (60) and a third terminal (70) inserted on the base (10), the first terminal (50) is in contact connection with a spring plate (30), and the spring plate contact (32) is in contact with the second terminal (60) or the third terminal (70) within the stroke range of the tongue plate (31).
6. The dustproof structure of the micro switch according to claim 5, wherein the pressing member (40) further comprises a lower protrusion (44) contacting with the bearing area (33), a first cross bar (51) for supporting the spring plate (30) is arranged on the upper portion of the first terminal (50), a slot (52) for the lower protrusion (44) to descend is arranged on the first cross bar (51), a second cross bar (61) is arranged on the upper portion of the second terminal (60), a terminal contact for contacting with the spring plate contact (32) to conduct signals is arranged on the second cross bar (61), and a third cross bar (71) is arranged on the upper portion of the third terminal (70).
7. The dust-proof structure of a micro switch according to claim 6, wherein the third cross bar (71) is located above the second cross bar (61), and the spring contact (32) is disposed between the second cross bar (61) and the third cross bar (71), and the spring contact (32) is contactable with the second terminal (60) or the third terminal (70) within a stroke range of the tongue piece (31).
8. The dust-proof structure of a micro switch according to claim 6, wherein the pressing member (40) descends by a preset distance, and the spring contact (32) contacts with the terminal contact on the second cross bar (61) within the travel range of the tongue piece (31); the pressing piece (40) moves up for a preset distance, and the elastic piece contact (32) is contacted with the third cross rod (71) within the travel range of the tongue piece (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2019/076790 WO2020042572A1 (en) | 2018-08-28 | 2019-03-04 | Dust-proof structure for micro switch |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821393535 | 2018-08-28 | ||
| CN201821393535X | 2018-08-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109841438A CN109841438A (en) | 2019-06-04 |
| CN109841438B true CN109841438B (en) | 2024-01-30 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910030980.2A Active CN109841438B (en) | 2018-08-28 | 2019-01-14 | Dustproof structure of micro switch |
| CN201920054076.0U Active CN209282095U (en) | 2018-08-28 | 2019-01-14 | A kind of dustproof construction of microswitch |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920054076.0U Active CN209282095U (en) | 2018-08-28 | 2019-01-14 | A kind of dustproof construction of microswitch |
Country Status (2)
| Country | Link |
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| CN (2) | CN109841438B (en) |
| WO (1) | WO2020042572A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109841438B (en) * | 2018-08-28 | 2024-01-30 | 惠州市正牌科电有限公司 | Dustproof structure of micro switch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201081807Y (en) * | 2007-02-02 | 2008-07-02 | 富士康(昆山)电脑接插件有限公司 | Touch switch |
| CN201259854Y (en) * | 2008-08-27 | 2009-06-17 | 厦门金思维电子有限公司 | Water-proof microswitch |
| CN202384225U (en) * | 2011-12-21 | 2012-08-15 | 厦门金思维电子有限公司 | Dustproof micro switch |
-
2019
- 2019-01-14 CN CN201910030980.2A patent/CN109841438B/en active Active
- 2019-01-14 CN CN201920054076.0U patent/CN209282095U/en active Active
- 2019-03-04 WO PCT/CN2019/076790 patent/WO2020042572A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136381A (en) * | 2011-03-23 | 2011-07-27 | 余正明 | Non-permeable minitype side key switch |
| JP2015153683A (en) * | 2014-02-18 | 2015-08-24 | ミック電子工業株式会社 | Waterproof and dust-proof switch, and method for manufacturing the same |
| CN205004217U (en) * | 2015-08-31 | 2016-01-27 | 浙江键富电子有限公司 | Waterproof and dustproof light touch switch |
| CN105575706A (en) * | 2016-02-18 | 2016-05-11 | 东莞市高特电子有限公司 | Mechanical keyboard switch having dustproof function |
| CN205845797U (en) * | 2016-06-03 | 2016-12-28 | 皮华程 | The dustproof construction of the mechanical keyboard switch of improvement |
| CN207765353U (en) * | 2018-01-22 | 2018-08-24 | 惠州市正牌科电有限公司 | A kind of interior waterproof dustproof construction of microswitch |
| CN209282095U (en) * | 2018-08-28 | 2019-08-20 | 惠州市正牌科电有限公司 | A kind of dustproof construction of microswitch |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020042572A1 (en) | 2020-03-05 |
| CN109841438A (en) | 2019-06-04 |
| CN209282095U (en) | 2019-08-20 |
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