CN214848259U - Small microswitch with dustproof function - Google Patents

Abstract

The utility model relates to a take small-size micro-gap switch of dustproof function, including plastic body, plastic body's first metal terminal of bottom fixedly connected with, second metal terminal and third metal terminal. The utility model discloses a be provided with the outer recess and the inner groovy of bilateral symmetry in the die cavity bottom of the protruding muscle of die cavity and the actuating lever of air defense stream and dust prevention in the actuating lever die cavity, the small air current that makes the actuating lever produce when the second die cavity of shell moves forms when getting into the die cavity of actuating lever, the air current of lower interference is in order to reach the weak wind of die cavity and the effect of no wind of actuating lever, thereby prevent that the dust that gets into the actuating lever die cavity from flying upward, the die cavity bottom of actuating lever sets up the inner groovy, the die cavity inner wall of outer recess and actuating lever sets up all around to the inclined plane, these structure settings are used for adsorbing the small dust that flies upward in getting into the die cavity, thereby further prevent that the dust of actuating lever in the die cavity from flying upward to flow and scurry to the switch inside.

Description

Small microswitch with dustproof function

Technical Field

The utility model relates to an electronic switch technical field especially relates to a take small-size micro-gap switch of dustproof function.

Background

The miniature microswitch is a duplex switch with a main body covered by a shell and a movable driving rod arranged on the surface of the top of the shell. The duplex switch has the advantages of short stroke, compact and rapid resilience, smooth hand feeling feedback, clean and crisp sound, accurate and instantaneous action, realization of the electrical function of the switch through mechanical opening and closing of metal contacts, and sound production by knocking upper and lower metal static contact contacts through metal moving contact contacts at the tail ends of metal elastic sheets. When external force is applied to the driving rod, the bow-shaped part of the metal elastic sheet can be compressed, deformed and displaced to a critical point to generate instantaneous action, so that a metal moving contact at the tail end of the metal elastic sheet is instantaneously disconnected with a metal static contact on the switch, and the moving contact at the tail end of the metal elastic sheet is instantaneously connected with a lower metal static contact while the metal moving contact is disconnected; when the acting force applied to the metal elastic sheet is cancelled, the arch part of the metal elastic sheet is subjected to deformation and stored compression energy and begins to release to generate a reverse acting force; when the elastic potential energy released by the arch of the metal elastic sheet reaches the action critical point of the metal elastic sheet, the reverse action is instantly finished, namely when the hand is released, the metal moving contact at the tail end of the metal elastic sheet is switched off instantly with the lower metal static contact, and the metal moving contact at the tail end of the metal elastic sheet is switched on instantly with the upper metal static contact. The action principle of the internal structure of the elastic metal sheet is that the arch part of the elastic metal sheet is stressed to be compressed and deformed and is released to generate potential energy to bounce the elastic metal sheet to realize on-off. The computer mouse is mainly applied to the fields of computer mice, household appliances, medical instruments, machine tool control equipment, building automation, vehicle-mounted equipment, aerospace, aviation, mines, electric tools, power systems, digital audio and video and the like. The microswitch with the waterproof spray pattern and the dustproof function in the current market adopts a silica gel sleeve and silica gel pad structure, so that the size of the switch is large, the switch pressing force is large, and the application range is limited. Therefore, a small microswitch with a dustproof function and an ultra-long service life is provided.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model adopts the following technical scheme:

a small microswitch with a dustproof function comprises a plastic body, wherein the bottom of the plastic body is fixedly connected with a first metal terminal, a second metal terminal and a third metal terminal, the left side and the right side of the side wall of the plastic body are respectively provided with a first combination groove and a second combination groove, the left surface and the right surface of the top of the plastic body are respectively provided with a U-shaped groove, the left side and the right side of the top of the plastic body are respectively provided with a front convex strip and a rear convex strip, the front side and the rear side of the plastic body are respectively provided with a first fixture block and a second fixture block, the first metal terminal is provided with a first head part which is bent at 90 degrees, the lower surface of the first head part is fixedly connected with a lower convex point of the head part, the second metal terminal is provided with a second head part which is bent at 90 degrees, a metal fixed contact point is fixedly connected on the second head part, the third metal terminal is provided with a 90-degree bend at the rear of the head part and a 90-degree bend at the front of the head part, a first groove and a second groove are respectively arranged on the front side and the rear side of the head rear 90-degree bend and the head front 90-degree bend, a metal elastic sheet is arranged above the plastic body, a metal elastic sheet front clamping point and a metal elastic sheet rear clamping point are respectively arranged on the metal elastic sheet, a metal elastic sheet arch part is arranged on the metal elastic sheet, a connecting bridge is arranged on the metal elastic sheet, a metal moving contact point is fixedly connected on the metal elastic sheet, a metal moving contact point lower part is arranged below the metal moving contact point, the metal elastic sheet front clamping point is movably connected with a second groove on the head of a third metal terminal, the metal elastic sheet rear clamping point is movably connected with a first groove on the head of the third metal terminal, and the upper surface of the metal moving contact point on the metal elastic sheet is movably connected with the head lower convex point surface of the first metal terminal, the connecting bridge of the metal elastic sheet is connected with the driving rod and is connected with the surfaces of a first semicircular boss and a second semicircular boss at the lower part of the driving rod in a sliding way, a middle upright post is arranged in the middle of the bottom of a cavity of the driving rod, the front side and the rear side of the cavity of the driving rod are respectively provided with six anti-gas flows and cavity ribs, the bottom of the cavity of the driving rod is provided with four bilaterally symmetrical outer grooves, the bottom of the cavity of the driving rod is also provided with four bilaterally symmetrical inner grooves, the periphery of the inner wall of the cavity of the driving rod is an inclined plane, the back side of the driving rod is provided with a back cavity, a shell is arranged above the driving rod, the front side and the rear side of the shell are respectively provided with a first clamping groove and a second clamping groove, the left side and the right side of the shell are respectively provided with a first boss and a second boss, the upper surface hole is arranged on the shell, and a boss at the top of the upper surface hole is provided with a shell top boss, the utility model discloses a plastic body's boss, including shell, first die cavity, second die cavity, third die cavity, shell back second die cavity, the shell back second die cavity is provided with the middle boss in area type hole, the second die cavity inner wall left and right sides at the shell back is provided with the recess respectively, inner wall both sides are provided with the protruding muscle of four preceding back symmetries respectively around the second die cavity at the shell back, upper surface profile hole inner wall and actuating lever inner chamber middle standing pillar sliding connection, the lower surface of the first draw-in groove of shell and second draw-in groove respectively with the first fixture block and the second fixture block looks joint of plastic body, the first boss and the second boss of shell respectively with the first bonding groove and the second bonding groove looks joint of plastic body both sides.

Preferably, the first metal terminal, the second metal terminal, the third metal terminal and the plastic body are of a cast integrally-formed structure, and the first metal terminal, the second metal terminal and the third metal terminal are symmetrically distributed at the bottom of the plastic body.

Preferably, the lower head salient point fixedly connected with the lower surface of the first head is formed by punching, or the lower head salient point is fixed on the lower surface of the first head by adopting a cold riveting structure technology or a butt welding technology.

Preferably, the metal stationary contact is fixed to the second head by a cold riveting structure technology, or the metal stationary contact is welded to the second head by a butt welding technology.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a be provided with the outer recess and the inner groovy of bilateral symmetry in the die cavity bottom of the protruding muscle of die cavity and the actuating lever of air defense stream and dust prevention in the actuating lever die cavity, the small air current that makes the actuating lever produce when the second die cavity of shell moves forms when getting into the die cavity of actuating lever, the air current of lower interference is in order to reach the weak wind of die cavity and the effect of no wind of actuating lever, thereby prevent that the dust that gets into the actuating lever die cavity from flying upward, the die cavity bottom of actuating lever sets up the inner groovy, the die cavity inner wall of outer recess and actuating lever sets up all around to the inclined plane, these structure settings are used for adsorbing the small dust that flies upward in getting into the die cavity, thereby further prevent that the dust of actuating lever in the die cavity from flying upward to flow and scurry to the switch inside.

(2) The utility model discloses a protruding muscle that inner wall both sides set up around the second die cavity at the shell back reduces shell and the peripheral four walls friction of actuating lever and makes and produce static particle effect on every side, weakens the airborne drift dust ability of these static particle absorptions, sets up the recess respectively through the second die cavity inner wall left and right sides and is the second die cavity air pressure unanimous at actuating lever die cavity and the shell back when guaranteeing the action.

(3) The utility model discloses a U type groove that both sides set up about plastic body's upper portion prevents the connecting bridge of metal flexure strip and the semi-circular boss one of actuating lever lower part, semi-circular boss two and removes the emergence that causes the switch insulation impedance to reduce the condition in the switch because of the trace metal powder that the friction produced in long-term the use.

Drawings

Fig. 1 is a schematic diagram of the explosion structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the back of the housing of the present invention;

fig. 3 is a schematic view of the back structure of the housing of the present invention;

fig. 4 is a schematic front view of the driving rod of the present invention;

fig. 5 is a schematic view of an inverted structure of the driving rod of the present invention;

fig. 6 is a schematic view of the back structure of the metal elastic sheet of the present invention;

fig. 7 is a schematic bottom structure view of the plastic body of the present invention;

FIG. 8 is a schematic structural view of the plastic body with the metal elastic sheet of the present invention;

FIG. 9 is a schematic view of an extended structure of another embodiment of the plastic body with a metal elastic sheet of the present invention;

fig. 10 is a schematic structural view of the utility model combined into a whole.

In the figure: 1. a first metal terminal; 101. a first head portion; 102. a lower head bump; 2. a second metal terminal; 201. a second head; 3. a third metal terminal; 301. a first groove; 302. bending the head at 90 degrees; 303. bending the head at 90 degrees; 304. a second groove; 4. a plastic body; 401. a first coupling groove; 402. a first clamping block; 403. a front convex strip; 404. a U-shaped groove; 405. a rear convex strip; 406. a second coupling groove; 407. a second fixture block; 5. a metal stationary contact point; 6. a metal moving contact; 601. the lower part of a metal moving contact; 7. a metal elastic sheet; 701. a metal elastic sheet rear clamping point; 702. a connecting bridge; 703. A front clamping point of the metal elastic sheet; 704. the metal elastic sheet is in an arch shape; 8. a drive rod; 801. a die cavity convex rib; 802. an outer groove; 803. an inner groove; 804. a middle upright post; 805. an inclined surface; 806. the bottom of the cavity; 807. a back cavity; 808. a semicircular boss I; 809. a semicircular boss II; 9. a housing; 901. a first card slot; 902. a boss at the top of the shell; 903. an upper surface-shaped hole; 904. a second card slot; 905. a first boss; 906. a second boss; 907. a third cavity; 908. a rib is protruded; 909. a second cavity; 910. a first cavity; 911. a middle boss; 912. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-10, a miniature microswitch with a dust-proof function comprises a plastic body 4, a first metal terminal 1, a second metal terminal 2 and a third metal terminal 3 are fixedly connected to the bottom of the plastic body 4, a first combination groove 401 and a second combination groove 406 are respectively formed on the left and right sides of the side wall of the plastic body 4, the first metal terminal 1, the second metal terminal 2, the third metal terminal 3 and the plastic body 4 are of a cast integral structure, the first metal terminal 1, the second metal terminal 2 and the third metal terminal 3 are symmetrically distributed at the bottom of the plastic body 4, the left and right surfaces of the top of the plastic body 4 are respectively provided with a U-shaped groove 404, the left and right sides of the top of the plastic body 4 are respectively provided with a front convex strip 403 and a rear convex strip 405, the front and rear sides of the plastic body 4 are respectively provided with a first clamping block 402 and a second clamping block 407, a first head 101 is arranged on the first metal terminal 1, the first head 101 is bent by 90 degrees, a lower head salient point 102 is fixedly connected below the first head 101, the lower head salient point 102 fixedly connected below the first head 101 is formed by punching, or the lower head salient point 102 is fixed below the first head 101 by adopting a cold riveting structure technology or a butt welding technology, the second metal terminal 2 is provided with a second head 201, the second head 201 is bent by 90 degrees, the upper surface of the second head 201 is fixedly connected with a metal static contact 5, the metal static contact 5 is fixed on the second head 201 by adopting the cold riveting structure technology, or the metal static contact 5 is welded on the second head 201 by adopting the butt welding technology, the third metal terminal 3 is provided with a rear 90-degree head bend 302 and a front 90-degree head bend 303, the front and back sides of the rear 90-degree head bend 302 and the front 90-degree head bend 303 are respectively provided with a first groove 301 and a second groove 304, a metal elastic sheet 7 is arranged above the plastic body 4, a metal elastic sheet front clamping point 703 and a metal elastic sheet rear clamping point 701 are respectively arranged on the metal elastic sheet 7, a metal elastic sheet arch 704 is arranged on the metal elastic sheet 7, a connecting bridge 702 is arranged on the metal elastic sheet 7, a metal moving contact point 6 is fixedly connected on the metal elastic sheet 7, a metal moving contact point lower part 601 is arranged below the metal moving contact point 6, the metal elastic sheet front clamping point 703 is movably connected with a second groove 304 at the head part of a third metal terminal 3, the metal elastic sheet rear clamping point 701 is movably connected with a first groove 301 at the head part of the third metal terminal 3, the upper surface of the metal moving contact point 6 on the metal elastic sheet 7 is movably connected with the surface of a head part lower convex point 102 of the first metal terminal 1, the connecting bridge 702 of the metal elastic sheet 7 is connected with a driving rod 8 and is connected with the surfaces of a semicircular boss I808 and a semicircular boss II 809 at the lower part of the driving rod 8 in a sliding manner, the middle of the bottom 806 of the cavity of the driving rod 8 is provided with a middle upright column 804, the front side and the rear side of the cavity of the driving rod 8 are respectively provided with six air-proof flow and cavity convex ribs 801, the bottom 806 of the cavity of the driving rod 8 is provided with four bilateral symmetric outer grooves 802, the bottom 806 of the cavity of the driving rod 8 is also provided with four bilateral symmetric inner grooves 803, the cavity convex ribs 801, the inner grooves 803 and the outer grooves 802 are arranged in the cavity 807 of the back of the driving rod 8, the function of the driving rod is that the tiny air flow generated by the driving rod 8 when the cavity of the housing acts forms an air flow which is interfered up and down when entering the cavity of the driving rod 8 by using the aerodynamic principle so as to achieve the effects of weak wind and no wind of the cavity of the driving rod 8, thereby preventing the dust entering the cavity of the driving rod 8 from flying, the inner grooves 803 and the outer grooves 802 arranged at the bottom 806 of the cavity of the driving rod 8 absorb the entering dust, the periphery of the inner wall of the cavity of the driving rod 8 is provided with an inclined surface 805, the inclined plane 805 is arranged to adsorb the tiny dust flying into the cavity, so as to further prevent the dust flying into the cavity from flowing into the switch when the driving rod 8 is operated, the periphery of the inner wall of the cavity of the driving rod 8 is the inclined plane 805, the back of the driving rod 8 is provided with a back cavity 807, the upper part of the driving rod 8 is provided with a shell 9, the front side and the back side of the shell 9 are respectively provided with a first clamping groove 901 and a second clamping groove 904, the left side and the right side of the shell 9 are respectively provided with a first boss 905 and a second boss 906, the upper surface of the shell 9 is provided with an upper surface type hole 903, the top of the upper surface type hole 903 is provided with a shell top boss 902, the back of the shell 9 is provided with a first cavity 910, a second cavity 909 and a third cavity 907, the second cavity 909 at the back of the shell 9 is provided with a middle boss 911 with a shaped hole, the left side and the right side of the inner wall of the second cavity 909 at the back of the shell 9 are respectively provided with a groove 912, the arrangement of the groove 912 is to ensure that the air pressure of the cavity of the driving rod 8 is consistent with that of the second cavity 909 at the back of the housing 9 during operation, four convex ribs 908 which are symmetrical front and back are respectively arranged at the front and back inner walls of the second cavity 909 at the back of the housing 9, the friction between the housing and the peripheral four walls of the driving rod 8 is reduced by the convex ribs 908 arranged at the front and back inner walls of the second cavity 909 at the back of the housing 9, so that the electrostatic particle effect is generated around the housing, the floating dust capacity of the electrostatic particles in the air is reduced, the inner wall of the upper surface type hole 903 is slidably connected with the middle upright 804 in the inner cavity of the driving rod 8, the lower surfaces of the first clamping groove 901 and the second clamping groove 904 of the housing 9 are respectively clamped with the first clamping block 402 and the second clamping block 407 of the plastic body 4, and the first boss 905 and the second boss 906 of the housing 9 are respectively clamped with the first combination groove 401 and the second combination groove 406 at the two sides of the plastic body 4.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims (4)

1. The utility model provides a take small-size micro-gap switch of dustproof function, includes plastic body (4), its characterized in that: the bottom of the plastic body (4) is fixedly connected with a first metal terminal (1), a second metal terminal (2) and a third metal terminal (3), the left side and the right side of the side wall of the plastic body (4) are respectively provided with a first combination groove (401) and a second combination groove (406), the left surface and the right surface of the top of the plastic body (4) are respectively provided with a U-shaped groove (404), the left side and the right side of the top of the plastic body (4) are respectively provided with a front convex strip (403) and a rear convex strip (405), the front side and the rear side of the plastic body (4) are respectively provided with a first clamping block (402) and a second clamping block (407), the first metal terminal (1) is provided with a first head (101), the first head (101) is bent by 90 degrees, a lower convex point (102) of the head is fixedly connected below the first head (101), and the second metal terminal (2) is provided with a second head (201), the second head part (201) is bent by 90 degrees, a metal static contact (5) is fixedly connected to the upper surface of the second head part (201), a rear head 90-degree bend (302) and a front head 90-degree bend (303) are arranged on the third metal terminal (3), a first groove (301) and a second groove (304) are respectively arranged on the front side and the rear side of the rear head 90-degree bend (302) and the front head 90-degree bend (303), a metal elastic sheet (7) is arranged above the plastic body (4), a front metal elastic sheet clamping point (703) and a rear metal elastic sheet clamping point (701) are respectively arranged on the metal elastic sheet (7), an arched metal elastic sheet part (704) is arranged on the metal elastic sheet (7), a connecting bridge (702) is arranged on the metal elastic sheet (7), a metal movable contact (6) is fixedly connected to the upper surface of the metal elastic sheet (7), a metal moving contact lower part (601) is arranged below the metal moving contact (6), a front clamping point (703) of the metal elastic sheet is movably connected with a second groove (304) at the head of a third metal terminal (3), a rear clamping point (701) of the metal elastic sheet is movably connected with a first groove (301) at the head of the third metal terminal (3), the upper surface of the metal moving contact (6) on the metal elastic sheet (7) is movably connected with the surface of a head lower convex point (102) of the first metal terminal (1), a connecting bridge (702) of the metal elastic sheet (7) is connected with a driving rod (8) and is in sliding connection with the surfaces of a semicircular boss I (808) and a semicircular boss II (809) at the lower part of the driving rod (8), a middle upright column (804) is arranged in the middle of the bottom (806) of the cavity of the driving rod (8), and six air-proof cavities (801) are respectively arranged at the front side and the rear side of the cavity of the driving rod (8), the utility model discloses a drive rod, including actuating lever (8), drive lever (8), shell (903) are provided with to the top, shell (9) front and back both sides are provided with first draw-in groove (901) and second draw-in groove (904) respectively, shell (9) left and right sides is provided with first boss (905) and second boss (906) respectively, shell (9) upper surface is provided with upper surface type hole (903), upper surface type hole (903) top is provided with shell top boss (902), shell (9) back is provided with first die cavity (910), A second cavity (909) and a third cavity (907), wherein the second cavity (909) is provided with a middle boss (911) with a hole on the back of the shell (9), the left side and the right side of the inner wall of a second cavity (909) on the back of the shell (9) are respectively provided with a groove (912), the two sides of the front and back inner walls of a second cavity (909) on the back of the shell (9) are respectively provided with four convex ribs (908) which are symmetrical front and back, the inner wall of the upper surface type hole (903) is connected with the middle upright post (804) of the inner cavity of the driving rod (8) in a sliding way, the lower surfaces of a first clamping groove (901) and a second clamping groove (904) of the shell (9) are respectively clamped with a first clamping block (402) and a second clamping block (407) of the plastic body (4), first boss (905) and second boss (906) of shell (9) joint mutually with first combination groove (401) and second combination groove (406) of plastic body (4) both sides respectively.

2. The miniature microswitch with the dustproof function according to claim 1, wherein: the first metal terminal (1), the second metal terminal (2), the third metal terminal (3) and the plastic body (4) are of an integrally formed structure and are poured, and the first metal terminal (1), the second metal terminal (2) and the third metal terminal (3) are symmetrically distributed at the bottom of the plastic body (4).

3. The miniature microswitch with the dustproof function according to claim 1, wherein: the lower head salient point (102) fixedly connected below the first head (101) is formed in a stamping mode, or the lower head salient point (102) is fixed below the first head (101) through a cold riveting structure technology or a butt welding technology.

4. The miniature microswitch with the dustproof function according to claim 1, wherein: the metal static contact point (5) is fixed on the second head part (201) by adopting a cold riveting structure technology, or the metal static contact point (5) is welded on the second head part (201) by adopting a butt welding technology.

Images