A high-protection micro switch for flood-proof doors

Abstract

The present invention provides a high-protection microswitch for flood-proof doors, which relates to the technical field of electronic switches. The high-protection microswitch for flood-proof doors includes a housing, a first static contact, a second static contact, a mounting bracket, a movable contact, a swinging member, and a button. The housing is provided with a normally closed terminal, a normally open terminal, and a common terminal, respectively. The first static contact is rotatably mounted on the normally closed terminal, and the second static contact is rotatably mounted on the normally open terminal. The mounting bracket is movably mounted within the housing and positioned between the first and second static contacts. The movable contact is mounted on the mounting bracket. The swinging member is movably mounted within the housing and connected to the mounting bracket. The swinging member is provided with two springs, one of which faces the first static contact and the other faces the second static contact. The button is pressably mounted on the housing. The high-protection microswitch for flood-proof doors of the present invention can change the contact position of the first static contact and the movable contact, as well as the contact position of the second static contact and the movable contact, when in use.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic switches, in particular to a high-protection micro switch for flood-proof doors. Background Art

[0002] Flood control doors are special protective devices used to prevent water from intruding into specific areas, thereby ensuring the safety of personnel and equipment. Currently, existing flood control doors are typically equipped with micro switches at specific positions on the door frame or door leaf trajectory (usually the fully open or fully closed position). These micro switches detect whether the door leaf is in the fully closed or fully open position, ensuring an effective seal when the door leaf abuts the door frame and unobstructed access when the door leaf is fully open.

[0003] At present, the contact position of the moving contact and the static contact of the existing micro switch for flood prevention doors remains unchanged during use. Since the door leaf needs to be opened and closed frequently, the micro switch will cause serious wear and tear on the contact position of the moving contact and the static contact under long-term and high-frequency switching actions, which not only affects the service life of the micro switch, but also causes poor conduction of the micro switch, thereby affecting the use of the flood prevention door.

[0004] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the Invention

[0005] Based on this, it is necessary to provide a high-protection micro switch for flood-proof doors to address the problem that the contact position of the moving contact and the static contact of the current micro switch is prone to wear after long-term use.

[0006] The above purpose is achieved through the following technical solutions:

[0007] A high-protection micro switch for flood-proof doors, comprising:

[0008] A housing, wherein the housing is provided with a normally closed terminal, a normally open terminal and a common terminal;

[0009] A first static contact is rotatably provided on the normally closed terminal along its own circumferential direction;

[0010] The second static contact is rotatably arranged on the normally open terminal along its own circumferential direction;

[0011] a mounting bracket movably disposed in the housing and located between the first static contact and the second static contact;

[0012] A moving contact is provided on the mounting frame;

[0013] a swinging member movably disposed in the housing and connected to the mounting bracket, wherein the swinging member is provided with two spring pieces, one of which faces the first static contact and is used to drive the first static contact to rotate, and the other spring piece faces the second static contact and is used to drive the second static contact to rotate;

[0014] A button is pressably arranged on the housing, and one end of the button is arranged in the housing and corresponds to the swinging member.

[0015] In a possible embodiment, a first ratchet is provided on the first static contact, and a second ratchet is provided on the second static contact. The spring piece facing the first static contact can engage with the first ratchet, and the spring piece facing the second static contact can engage with the second ratchet.

[0016] In one possible embodiment, a first scraper is provided on the normally closed terminal, one end of the first scraper is abutted against an end of the first static contact close to the second static contact, and a second scraper is provided on the normally open terminal, one end of the second scraper is abutted against an end of the second static contact close to the first static contact.

[0017] In a possible implementation, one end of the mounting bracket is rotatably engaged with the swing member, and one end of the mounting bracket away from the swing member is rotatably engaged with the housing, and arc extinguishing grids are provided on two opposite sides of the mounting bracket.

[0018] In a possible embodiment, a movable groove is provided on the outer shell, and a first rack and a second rack are respectively provided on two opposite inner walls of the movable groove, the first rack and the second rack are staggered, and the first rack is close to the normally closed terminal, and the second rack is close to the normally open terminal; a spur gear is provided at one end of the mounting frame away from the swinging member, and the spur gear can engage with the first rack or the second rack when moving in the movable groove; a rotating shaft is provided at one end of the mounting frame away from the movable groove, and the rotating shaft is rotatably passed through the swinging member.

[0019] In a possible implementation manner, the movable contact is rotatably disposed on the mounting frame along its own circumferential direction, and the swinging member is transmission-connected to the movable contact.

[0020] In a possible embodiment, a first bevel gear is provided on the moving contact, a rotatable second bevel gear is provided on the swinging member, the first bevel gear can engage with the second bevel gear, and a rotating shaft is provided at one end of the mounting frame close to the swinging member, and the rotating shaft is rotatably passed through the second bevel gear and the swinging member.

[0021] In one possible embodiment, a protrusion is provided on the swinging member, a pawl is provided on the circumferential outer side of the protrusion, the second bevel gear is rotatably provided on the protrusion, and the second bevel gear is provided with a ratchet portion that cooperates with the pawl, and the rotating shaft is rotatably passed through the second bevel gear and the protrusion.

[0022] In a possible implementation, the high-protection micro switch for the flood-proof door further includes an elastic member, one end of which is connected to one end of the common terminal provided in the housing, and the other end of which is connected to the swing member.

[0023] In a possible implementation, the high-protection micro switch for the flood-proof door further includes an adjusting member, which is adjustably disposed on the housing and abuts against an end of the mounting bracket away from the swinging member.

[0024] The beneficial effects of the present invention are:

[0025] The high-protection microswitch for flood-proof doors provided by the present invention has the following characteristics: when the button is in the first position, the moving contact contacts the first static contact, and the common terminal can be electrically connected to the normally closed terminal through the swing member, the mounting bracket, the moving contact, and the first static contact in sequence; when the button is in the second position, the moving contact contacts the second static contact, and the common terminal can be electrically connected to the normally open terminal through the swing member, the mounting bracket, the moving contact, and the second static contact in sequence. When the button moves from the first position to the second position and presses the swing member, the swing member can drive the mounting bracket to move toward the second static contact, and the spring plate on the swing member facing the second static contact can drive the second static contact to rotate along its own circumference, thereby changing the contact position between the second static contact and the moving contact; when the pressure of the button on the swing member weakens or disappears, the swing member can drive the mounting bracket to move toward the first static contact, and the spring plate on the swing member facing the first static contact can drive the first static contact to rotate along its own circumference, thereby changing the contact position between the first static contact and the moving contact. When the high-protection micro switch for flood-proof doors of the present invention is used for a long time, each switching action can change the contact position of the second static contact and the moving contact, as well as the contact position of the first static contact and the moving contact, thereby effectively preventing serious wear between the moving contact and the first static contact, and between the moving contact and the second static contact, thereby improving the service life of the high-protection micro switch for flood-proof doors and ensuring that the high-protection micro switch for flood-proof doors has a stable conduction state. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It shows a schematic structural diagram of a high-protection micro switch for a flood-proof door from a first perspective according to an embodiment of the present invention;

[0027] Figure 2 A schematic structural diagram of a high-protection micro switch for a flood-proof door according to an embodiment of the present invention from a second viewing angle is shown;

[0028] Figure 3 A schematic structural diagram of a high-protection micro switch for a flood-proof door according to an embodiment of the present invention from a third perspective is shown;

[0029] Figure 4 Shown Figure 3 Cross-sectional view along the AA direction of the high-protection micro switch for medium flood-proof doors in the first state;

[0030] Figure 5 Shown Figure 4 A magnified schematic diagram of point B in the middle;

[0031] Figure 6 Shown Figure 3 Cross-sectional view along the AA direction of the high-protection micro switch for medium flood-proof doors in the second state;

[0032] Figure 7 A schematic diagram of an explosion of a high-protection micro switch for a flood-proof door according to an embodiment of the present invention is shown;

[0033] Figure 8 It shows the internal schematic diagram of a high-protection micro switch for a flood-proof door according to an embodiment of the present invention;

[0034] Figure 9 A schematic structural diagram of a mounting frame and a moving contact according to an embodiment of the present invention is shown;

[0035] Figure 10 A schematic structural diagram of a swinging member according to an embodiment of the present invention is shown;

[0036] Figure 11 A schematic structural diagram of a normally open terminal and a second static contact according to an embodiment of the present invention is shown.

[0037] in:

[0038] 100, first housing; 110, second housing; 111, movable slot; 112, second rack; 120, normally closed terminal; 121, first scraper; 130, normally open terminal; 131, second scraper; 140, common terminal; 150, button; 160, adjustment member;

[0039] 200, first static contact; 210, first ratchet;

[0040] 300, second static contact; 310, second ratchet;

[0041] 400, moving contact; 410, first bevel gear;

[0042] 500, mounting frame; 510, frame body; 520, spur gear; 530, rotating shaft; 540, arc chute;

[0043] 600, swinging member; 610, main body; 611, slot; 612, protrusion; 613, pawl; 620, second bevel gear; 621, ratchet portion; 630, spring piece;

[0044] 700, elastic parts;

[0045] 800. Connectors. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] One embodiment of the present invention provides a high-protection micro switch for a flood-proof door, which is used in flood-proof door facilities.

[0050] See also Figures 1 to 8The high-protection micro switch for flood-proof doors includes a housing, a first static contact 200, a second static contact 300, a mounting bracket 500, a moving contact 400, a swinging member 600 and a button 150; the housing is provided with a normally closed terminal 120, a normally open terminal 130 and a common terminal 140 respectively, the first static contact 200 can be rotatably arranged on the normally closed terminal 120 along its own circumferential direction, the second static contact 300 can be rotatably arranged on the normally open terminal 130 along its own circumferential direction, the mounting bracket 500 can be movably arranged in the housing, and is installed The mounting frame 500 is located between the first static contact 200 and the second static contact 300, the moving contact 400 is arranged on the mounting frame 500, the swinging member 600 is movably arranged in the shell and connected to the mounting frame 500, and two spring pieces 630 are provided on the swinging member 600, one of the spring pieces 630 is facing the first static contact 200, and the other spring piece 630 is facing the second static contact 300, and the button 150 is pressably arranged on the shell, and one end of the button 150 is arranged in the shell and corresponds to the swinging member 600.

[0051] Among them, when the button 150 is in the first position, the moving contact 400 is in contact with the first static contact 200, and the common terminal 140 can be electrically connected to the normally closed terminal 120 through the swing member 600, the mounting bracket 500, the moving contact 400 and the first static contact 200 in sequence; when the button 150 is in the second position, the moving contact 400 is in contact with the second static contact 300, and the common terminal 140 can be electrically connected to the normally open terminal 130 through the swing member 600, the mounting bracket 500, the moving contact 400 and the second static contact 300 in sequence.

[0052] When the button 150 moves from the first position to the second position and presses the swinging member 600, the swinging member 600 can drive the mounting bracket 500 to move toward the second static contact 300, and the spring piece 630 on the swinging member 600 facing the second static contact 300 can drive the second static contact 300 to rotate along its own circumferential direction, thereby changing the contact position of the second static contact 300 and the moving contact 400; the pressure of the button 150 on the swinging member 600 weakens or disappears, and when the button 150 moves from the second position to the first position, the swinging member 600 can drive the mounting bracket 500 to move toward the first static contact 200, and the spring piece 630 on the swinging member 600 facing the first static contact 200 can drive the first static contact 200 to rotate along its own circumferential direction, thereby changing the contact position of the first static contact 200 and the moving contact 400. When the high-protection microswitch for flood-proof doors of the present invention is used for a long time, each switching action can change the contact position of the second static contact 300 and the moving contact 400, as well as the contact position of the first static contact 200 and the moving contact 400, thereby effectively preventing serious wear between the moving contact 400 and the first static contact 200, and between the moving contact 400 and the second static contact 300, thereby improving the service life of the high-protection microswitch for flood-proof doors and ensuring that the high-protection microswitch for flood-proof doors has a stable conduction state.

[0053] See also Figures 1 to 3 In some embodiments, the housing includes a first housing 100 and a second housing 110 that are detachably connected, and the first housing 100 and the second housing 110 are enclosed to form the housing.

[0054] Exemplarily, the first housing 100 and the second housing 110 can be detachably connected via a bolt structure.

[0055] See also Figures 1 to 4 In some embodiments, the normally closed terminal 120, the normally open terminal 130, and the common terminal 140 are respectively disposed on the second housing 110; one end of the normally closed terminal 120 is fixed within the second housing 110, and the other end is exposed outside the second housing 110; one end of the normally open terminal 130 is fixed within the second housing 110, and the other end is exposed outside the second housing 110; one end of the common terminal 140 is fixed within the second housing 110, and the other end is exposed outside the second housing 110. The first static contact 200 is disposed at the end of the normally closed terminal 120 fixed within the second housing 110, and the second static contact 300 is disposed at the end of the normally open terminal 130 fixed within the second housing 110, and the first static contact 200 and the second static contact 300 are disposed opposite each other.

[0056] In some embodiments, the button 150 is disposed at one end inside the second shell 110, corresponding to the end of the swing member 600 away from the mounting bracket 500. When the button 150 moves from the first position to the second position, it can press the end of the swing member 600 away from the mounting bracket 500 to move the swing member 600 toward the second static contact 300.

[0057] See also Figure 4 and Figure 6 In some embodiments, the high-security microswitch for flood-proof doors further includes a connector 800 disposed within the housing. One end of the connector 800 is connected to an end of the common terminal 140 disposed within the housing, and the other end of the connector 800 abuts against a side of the swing member 600 away from the button 150. The connector 800 can support the end of the swing member 600 away from the mounting bracket 500. When the button 150 presses the end of the swing member 600 away from the mounting bracket 500, causing the swing member 600 to move toward the second static contact 300, the connector 800 can deform. When the pressure of the button 150 on the swing member 600 weakens or disappears, the swing member 600 can restore, thereby causing the swing member 600 to move toward the first static contact 200, thereby causing the movable contact 400 to contact the first static contact 200.

[0058] The connecting member 800, the swinging member 600 and the mounting frame 500 are all made of conductive materials, so that the common terminal 140 can be electrically connected to the normally closed terminal 120 through the connecting member 800, the swinging member 600, the mounting frame 500, the moving contact 400 and the first static contact 200 in sequence, and the common terminal 140 can also be electrically connected to the normally open terminal 130 through the connecting member 800, the swinging member 600, the mounting frame 500, the moving contact 400 and the second static contact 300 in sequence.

[0059] See also Figure 5 、 Figure 8 and Figure 11 In some embodiments, a first ratchet 210 is provided on the first static contact 200, and a second ratchet 310 is provided on the second static contact 300. The spring piece 630 facing the first static contact 200 can engage with the first ratchet 210, and the spring piece 630 facing the second static contact 300 can engage with the second ratchet 310.

[0060] During the movement of the swinging member 600 toward the second static contact 300, the spring piece 630 toward the second static contact 300 can be inserted into the tooth groove of the second ratchet 310 to drive the second static contact 300 to rotate along its own circumferential direction; during the movement of the swinging member 600 toward the first static contact 200, the spring piece 630 toward the first static contact 200 can be inserted into the tooth groove of the first ratchet 210 to drive the first static contact 200 to rotate along its own circumferential direction.

[0061] See also Figure 5 、 Figure 8 and Figure 10 In some embodiments, the first ratchet 210 is arranged along the circumference of the outer side of the first static contact 200, and the second ratchet 310 is arranged along the circumference of the outer side of the second static contact 300. The two spring pieces 630 are obliquely arranged on the corresponding sides of the swinging member 600 so as to be inserted into the tooth grooves of the corresponding ratchet, thereby driving the corresponding static contact to rotate.

[0062] In some embodiments, see Figure 5 A snap fastener is provided on the outside of the first stationary contact 200 and is arranged circumferentially along the outside of the first stationary contact 200. A through hole is formed in the normally closed terminal 120, and a slot is formed on the inner wall of the through hole. The snap fastener is rotatably disposed in the slot, so that the first stationary contact 200 can be rotatably mounted on the normally closed terminal 120. Similarly, the second stationary contact 300 can also be rotatably mounted on the normally open terminal 130 using a similar snap-fit ​​structure.

[0063] See also Figure 5 and Figure 11In some embodiments, a first scraper 121 is provided on the normally closed terminal 120. One end of the first scraper 121 abuts against an end of the first static contact 200 near the second static contact 300. A second scraper 131 is provided on the normally open terminal 130. One end of the second scraper 131 abuts against an end of the second static contact 300 near the first static contact 200. The end of the first scraper 121 away from the first static contact 200 is fixed to the normally closed terminal 120, and the end of the second scraper 131 away from the second static contact 300 is fixed to the normally open terminal 130.

[0064] When the first static contact 200 rotates along its own circumferential direction on the normally closed terminal 120, the first scraper 121 can remove metal particles on the end surface of the first static contact 200 close to the second static contact 300; when the second static contact 300 rotates along its own circumferential direction on the normally open terminal 130, the second scraper 131 can remove metal particles on the end surface of the second static contact 300 close to the first static contact 200.

[0065] In some embodiments, one end of the mounting bracket 500 is rotatably engaged with the swing member 600, and the end of the mounting bracket 500 away from the swing member 600 is rotatably engaged with the housing. When the swing member 600 drives the mounting bracket 500 to move within the housing, the mounting bracket 500 can rotate relative to the second housing 110 and the swing member 600.

[0066] When the movable contact 400 is disconnected from the first stationary contact 200 and the movable contact 400 is disconnected from the second stationary contact 300, an arc is usually generated. The high temperature generated by the arc accelerates the oxidation of the movable contact 400, the first stationary contact 200 and the second stationary contact 300, and destroys the surface protective layer (such as the gold plating layer), thereby accelerating corrosion.

[0067] See also Figure 9 In some embodiments, arc extinguishing grids 540 are provided on two opposite sides of the mounting frame 500. The arc extinguishing grids 540 are composed of a plurality of metal grids with notches. When the movable contact 400 is disconnected from the first static contact 200 and the mounting frame 500 drives the movable contact 400 to rotate within the housing, and when the movable contact 400 is disconnected from the second static contact 300 and the mounting frame 500 drives the movable contact 400 to rotate within the housing, the arc extinguishing grids 540 divide the long arc into multiple series short arc segments through electromagnetic force, utilizing the near-cathode effect of the AC arc and the near-pole voltage drop of the DC arc to extinguish the arc, thereby reducing oxidation and corrosion of the movable contact 400, the first static contact 200, and the second static contact 300.

[0068] Furthermore, the arc extinguishing grid 540 is arranged on the frame 510 of the mounting frame 500, and is arranged on two opposite sides of the frame 510, so as to achieve an arc extinguishing effect when the moving contact 400 is disconnected from the second static contact 300, or when the moving contact 400 is disconnected from the first static contact 200.

[0069] In some embodiments, see Figure 5 and Figure 9 A movable groove 111 is provided on the second shell 110, and a first rack (not shown) and a second rack 112 are respectively provided on the two opposite inner walls of the movable groove 111. The first rack and the second rack 112 are staggered, and the first rack is close to the normally closed terminal 120, and the second rack 112 is close to the normally open terminal 130; the mounting frame 500 includes a frame body 510, a spur gear 520 and a rotating shaft 530, the spur gear 520 is connected to one end of the frame body 510 away from the swinging member 600, and when the spur gear 520 moves in the movable groove 111, it can engage with the first rack or the second rack 112, so that the mounting frame 500 and the second shell 110 can rotate relative to each other, and the rotating shaft 530 can be rotatably passed through the swinging member 600, so that the mounting frame 500 and the swinging member 600 can rotate relative to each other.

[0070] When the spur gear 520 moves in the moving groove 111 toward the second static contact 300, the spur gear 520 first engages with the first rack so that the spur gear 520 rotates in the moving groove 111 along the first direction. When the spur gear 520 disengages from the first rack and engages with the second rack 112, the spur gear 520 moves in the moving groove 111 along a second direction opposite to the first direction.

[0071] When the spur gear 520 moves in the moving groove 111 toward the first static contact 200, the spur gear 520 first engages with the second rack 112 to make the spur gear 520 rotate in the moving groove 111 along the first direction. When the spur gear 520 disengages from the second rack 112 and engages with the first rack, the spur gear 520 rotates in the moving groove 111 along the second direction.

[0072] In some embodiments, the length of the first rack and the length of the second rack 112 need to meet the following requirements: in the process of the moving contact 400 changing from contact with the first static contact 200 to contact with the second static contact 300, the frame 510 of the mounting frame 500 first rotates 180° along the first direction and then rotates 180° along the second direction; in the process of the moving contact 400 changing from contact with the second static contact 300 to contact with the first static contact 200, the frame 510 of the mounting frame 500 first rotates 180° along the first direction and then rotates 180° along the second direction, thereby ensuring that the arc extinguishing grid 540 has an arc extinguishing effect.

[0073] It should be noted that the offset between the first rack and the second rack 112 must be such that the spur gear 520 is fully disengaged from the first rack before engaging with the second rack 112 .

[0074] See also Figure 9 and Figure 10 In some embodiments, the moving contact 400 can be rotatably arranged on the frame 510 along its own circumferential direction, and the swinging member 600 is transmission-connected to the moving contact 400. When the swinging member 600 drives the mounting frame 500 to move in the housing, the swinging member 600 can drive the moving contact 400 to rotate on the frame 510.

[0075] Exemplarily, a buckle is provided along the circumference of the outer side of the moving contact 400, a connecting hole is provided on the frame body 510 of the mounting frame 500, and a slot is provided on the inner wall of the connecting hole. The buckle is rotatably provided in the slot so that the moving contact 400 can be rotatably provided on the frame body 510 along its own circumference.

[0076] In some embodiments, the movable contact 400 is provided with a first bevel gear 410, which is arranged circumferentially along the outer side of the movable contact 400. The swinging member 600 is provided with a rotatable second bevel gear 620, which is capable of meshing with the second bevel gear 620. The rotating shaft 530 of the mounting bracket 500 is rotatably interposed between the second bevel gear 620 and the swinging member 600. When the mounting bracket 500 rotates within the housing about the rotating shaft 530, the second bevel gear 620 can drive the movable contact 400 to rotate via the first bevel gear 410, thereby changing the contact position when the movable contact 400 contacts the first stationary contact 200 or the second stationary contact 300.

[0077] See also Figure 9 and Figure 10 In some embodiments, the swing member 600 is provided with a protrusion 612, and a pawl 613 is provided on the circumferential outer side of the protrusion 612. The second bevel gear 620 is rotatably mounted on the protrusion 612, and the second bevel gear 620 is provided with a ratchet portion 621 that engages with the pawl 613. The rotating shaft 530 is rotatably mounted through the second bevel gear 620 and the protrusion 612. The pawl 613 and the ratchet portion 621 cooperate to limit the rotation of the second bevel gear 620, thereby causing the second bevel gear 620 to drive the first bevel gear 410 to rotate, thereby driving the movable contact 400 to rotate.

[0078] For example, in the process of the swinging member 600 driving the mounting frame 500 to move toward the second static contact 300, when the spur gear 520 of the mounting frame 500 is engaged with the first rack, the mounting frame 500 rotates in the first direction. At this time, the second bevel gear 620 can rotate on the protrusion 612, so that the second bevel gear 620 cannot drive the moving contact 400 to rotate through the first bevel gear 410; when the spur gear 520 of the mounting frame 500 leaves the first rack and engages with the second rack 112, the mounting frame 500 rotates in a second direction opposite to the first direction. At this time, the pawl 613 and the ratchet portion 621 cooperate to limit the rotation of the second bevel gear 620 on the protrusion 612, so that the second bevel gear 620 can drive the moving contact 400 to rotate through the first bevel gear 410, thereby further changing the contact position of the moving contact 400 and the second static contact 300.

[0079] For example, in the process of the swinging member 600 driving the mounting frame 500 to move toward the first static contact 200, when the spur gear 520 of the mounting frame 500 engages with the second rack 112, the mounting frame 500 rotates in the first direction. At this time, the second bevel gear 620 can rotate on the protrusion 612, so that the second bevel gear 620 cannot drive the moving contact 400 to rotate through the first bevel gear 410; when the spur gear 520 of the mounting frame 500 leaves the second rack 112 and engages with the first rack, the mounting frame 500 rotates in a second direction opposite to the first direction. At this time, the pawl 613 and the ratchet portion 621 cooperate to limit the rotation of the second bevel gear 620 on the protrusion 612, so that the second bevel gear 620 can drive the moving contact 400 to rotate through the first bevel gear 410, thereby further changing the contact position of the moving contact 400 with the first static contact 200.

[0080] See also Figures 6 to 8 A slot 611 is provided on the main body 610 of the swing member 600 , and one end of the common terminal 140 disposed in the shell is passed through the slot 611 and fixed in the second shell 110 so that the swing member 600 can move in the shell and move relative to the common terminal 140 .

[0081] See also Figure 4 and Figure 6 In some embodiments, the high-security micro switch for flood-proof doors further includes an elastic member 700 , one end of which is connected to one end of the common terminal 140 disposed in the housing, and the other end of which is connected to the body 610 of the swing member 600 . The elastic member 700 can drive the swing member 600 to move rapidly.

[0082] See also Figure 4 、 Figure 6 and Figure 10One end of the elastic member 700 is connected to the side of the common terminal 140 passing through the groove body 611 and close to the mounting bracket 500 , and the other end is connected to the inner wall of the groove body 611 opposite to the common terminal 140 .

[0083] When the button 150 does not press the swing member 600, the swing member 600 is in a state of being lower on the left and higher on the right in the housing (the height of the swing member 600 at the end away from the mounting frame 500 is lower than the height of the swing member 600 at the end close to the mounting frame 500); when the button 150 presses the swing member 600, since the connecting member 800 supports the end of the swing member 600 away from the mounting frame 500, the height of the swing member 600 at the end close to the mounting frame 500 gradually becomes lower than the height of the swing member 600 at the end away from the mounting frame 500. When the moving contact 400 contacts the second static contact 300, the swing member 600 is in a state of being higher on the left and lower on the right in the housing (the height of the swing member 600 at the end away from the mounting frame 500 is higher than the height of the swing member 600 at the end close to the mounting frame 500).

[0084] When the swing member 600 moves toward the second static contact 300, the elastic member 700 is first compressed. The compression reaches a maximum when the height of the swing member 600 away from the mounting frame 500 is equal to the height of the swing member 600 close to the mounting frame 500. When the height of the swing member 600 away from the mounting frame 500 is higher than the height of the swing member 600 close to the mounting frame 500, the elastic member 700 stretches, thereby prompting the swing member 600 to move quickly toward the second static contact 300, and then prompting the moving contact 400 on the mounting frame 500 to move quickly toward the second static contact 300. Similarly, when the swing member 600 moves toward the first static contact 200, the elastic member 700 is first compressed. The compression reaches a maximum when the height of the swing member 600 away from the mounting frame 500 is equal to the height of the swing member 600 close to the mounting frame 500. When the height of the swing member 600 away from the mounting frame 500 is lower than the height of the swing member 600 close to the mounting frame 500, the elastic member 700 stretches, thereby prompting the swing member 600 to move quickly toward the first static contact 200, and then prompting the moving contact 400 on the mounting frame 500 to move quickly toward the first static contact 200.

[0085] Exemplarily, the elastic member 700 is a spring or a bellows.

[0086] See also Figure 5 、 Figure 9 and Figure 10 In some embodiments, the high-protection micro switch for flood-proof doors further includes an adjusting member 160, which is adjustably disposed on the second housing 110 and abuts against the spur gear 520. The adjusting member 160 is used to maintain the stability of the contact between the elastic member 700 and the swing member 600, thereby extending the service life of the micro switch.

[0087] Exemplarily, an adjustment hole connected to the movable groove 111 is provided on the second shell 110, an internal thread is provided on the inner wall of the adjustment hole, an external thread corresponding to the internal thread is provided on the adjustment member 160, and the adjustment member 160 is threadedly connected to the adjustment hole; the spur gear 520 is passed through the movable groove 111 and the adjustment hole, and one end of the adjustment member 160 is abutted against the spur gear 520 in the adjustment hole. Since the position of one end of the common terminal 140 provided in the outer shell remains unchanged, and one end of the elastic member 700 is connected to the common terminal 140, and the other end is connected to the inner wall of the groove body 611 opposite to the common terminal 140, by screwing the adjustment member 160 into the adjustment hole, the adjustment member 160 can drive the main body 610 to move through the mounting frame 500, thereby changing the compression amount of the elastic member 700, and thereby ensuring the contact pressure between the elastic member 700 and the main body 610.

[0088] After the high-protection micro switch for flood-proof doors has been used for a period of time, the elastic member 700 may suffer from stress fatigue, resulting in a weakening of the contact pressure between the elastic member 700 and the body 610. The adjusting member 160 can compensate for the loss of contact pressure between the elastic member 700 and the body 610, thereby ensuring a stable contact state between the elastic member 700 and the body 610, thereby extending the service life of the high-protection micro switch for flood-proof doors, and as the adjusting member 160 expands and contracts in the adjusting hole, it can also change the position of the mounting bracket 500 in the housing, thereby changing the position of the moving contact 400 in the housing, and further changing the contact position of the moving contact 400 with the first static contact 200, as well as the contact position of the moving contact 400 with the second static contact 300.

[0089] In some embodiments, a high-security microswitch for flood-proof doors is installed in the fully open or fully closed position of the flood-proof door system. The high-security microswitch for flood-proof doors installed in the fully closed position can detect whether the door leaf has moved to the fully closed position, thereby detecting whether the door leaf is in close contact with the door frame, thereby ensuring an effective seal between the door leaf and the door frame, preventing water from intruding into the protected area. The high-security microswitch for flood-proof doors installed in the fully open position can detect whether the door leaf has moved to the fully open position, thereby ensuring unobstructed passage or equipment maintenance.

[0090] Exemplarily, when the door leaf is not in contact with the button 150, the button 150 is in the first position, so that the moving contact 400 is in contact with the first static contact 200, thereby electrically connecting the common terminal 140 to the normally closed terminal 120; when the door leaf moves to the fully open position or to the fully closed position, the door leaf can contact and press the button 150, so that the button 150 moves from the first position to the second position, thereby electrically disconnecting the common terminal 140 from the normally closed terminal 120; when the door leaf moves to the fully open position or the fully closed position, the button 150 is in the second position, so that the moving contact 400 is in contact with the second static contact 300, thereby electrically connecting the common terminal 140 to the normally open terminal 130, and sending out a corresponding electrical signal. The controller determines whether the door leaf moves to the fully open position or the fully closed position by whether it receives the electrical signal.

[0091] The controller can be a PLC (Programmable Logic Controller) or a single-chip microcomputer.

[0092] In some embodiments, the high-security microswitch for flood-proof doors can also correspond to the locking mechanism of the flood-proof door system. When the door leaf is in the fully closed position, the locking mechanism's latch can be extended to secure the door leaf to the door frame, thereby preventing water pressure from forcing the door leaf open. The high-security microswitch for flood-proof doors can detect whether the latch is fully extended and locked, thereby ensuring the reliability of the door leaf and door frame connection.

[0093] Exemplarily, when the latch of the locking mechanism is not in contact with the button 150, the button 150 is in the first position, so that the moving contact 400 is in contact with the first static contact 200, thereby electrically connecting the common terminal 140 to the normally closed terminal 120; when the latch moves toward the high-protection microswitch for flood-proof doors, it can contact and press the button 150, so that the button 150 moves from the first position to the second position, thereby electrically disconnecting the common terminal 140 from the normally closed terminal 120; when the latch is fully extended, the button 150 is in the second position, so that the moving contact 400 is in contact with the second static contact 300, thereby electrically connecting the common terminal 140 to the normally open terminal 130, and sending a corresponding electrical signal. The controller determines whether the latch is fully extended by whether it receives the electrical signal.

[0094] In some embodiments, the high-security microswitch for flood-proof doors can also correspond to the seal of the flood-proof door system. When the door leaf is in the fully closed position, the seal between the door leaf and the door frame can be inflated to prevent water from flowing through the gap between the door leaf and the door frame. The high-security microswitch for flood-proof doors can detect whether the seal has properly expanded to the sealing pressure or fully retracted to the non-operating position.

[0095] Exemplarily, when the seal is not expanded, the button 150 is in the first position, causing the movable contact 400 to contact the first static contact 200, thereby electrically connecting the common terminal 140 to the normally closed terminal 120 and emitting a first electrical signal. When the seal expands, the button 150 can be contacted and pressed, causing the button 150 to move from the first position to the second position, thereby disconnecting the common terminal 140 from the normally closed terminal 120. When the seal expands properly and reaches the sealing pressure, the button 150 is in the second position, causing the movable contact 400 to contact the second static contact 300, thereby electrically connecting the common terminal 140 to the normally open terminal 130 and emitting a second electrical signal. When the seal returns to its initial state, the button 150 is in the first position, electrically connecting the common terminal 140 to the normally closed terminal 120 and emitting the first electrical signal. When the controller receives the second electrical signal, it determines that the seal has expanded properly and reached the sealing pressure. When the controller receives the first electrical signal, it determines that the seal has fully retracted.

[0096] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above-described embodiments merely illustrate several embodiments of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A high protection micro switch for flood prevention door, characterized in that: include: A housing, wherein the housing is provided with a normally closed terminal, a normally open terminal and a common terminal; A first static contact is rotatably provided on the normally closed terminal along its own circumferential direction; The second static contact is rotatably arranged on the normally open terminal along its own circumferential direction; a mounting bracket movably disposed in the housing and located between the first static contact and the second static contact; A moving contact is provided on the mounting frame; a swinging member movably disposed in the housing and connected to the mounting bracket, wherein the swinging member is provided with two spring pieces, one of which faces the first static contact and is used to drive the first static contact to rotate, and the other spring piece faces the second static contact and is used to drive the second static contact to rotate; A button is pressably arranged on the housing, and one end of the button is arranged in the housing and corresponds to the swinging member.

2. The high protection micro switch for flood-proof door according to claim 1 is characterized in that: The first static contact is provided with a first ratchet, the second static contact is provided with a second ratchet, the spring piece facing the first static contact can engage with the first ratchet, and the spring piece facing the second static contact can engage with the second ratchet.

3. The high-protection micro switch for flood-proof doors according to claim 1 or 2, characterized in that: A first scraper is provided on the normally closed terminal, one end of which is pressed against an end of the first static contact close to the second static contact; a second scraper is provided on the normally open terminal, one end of which is pressed against an end of the second static contact close to the first static contact.

4. The high-protection micro switch for flood-proof doors according to claim 1, characterized in that: One end of the mounting bracket is rotatably matched with the swing member, and one end of the mounting bracket away from the swing member is rotatably matched with the housing. Arc extinguishing grids are provided on two opposite sides of the mounting bracket.

5. The high-protection micro switch for flood-proof doors according to claim 4, characterized in that: A movable groove is provided on the outer shell, and a first rack and a second rack are respectively provided on two opposite inner walls of the movable groove. The first rack and the second rack are staggered, and the first rack is close to the normally closed terminal, and the second rack is close to the normally open terminal; a spur gear is provided at one end of the mounting frame away from the swinging member, and the spur gear can engage with the first rack or the second rack when moving in the movable groove; a rotating shaft is provided at one end of the mounting frame away from the movable groove, and the rotating shaft is rotatably passed through the swinging member.

6. The high-protection micro switch for flood-proof doors according to claim 4, characterized in that: The movable contact is rotatably arranged on the mounting frame along its own circumferential direction, and the swinging member is transmission-connected with the movable contact.

7. The high-protection micro switch for flood-proof doors according to claim 6, characterized in that: The moving contact is provided with a first bevel gear, the swinging member is provided with a rotatable second bevel gear, the first bevel gear can engage with the second bevel gear, and the mounting frame is provided with a rotating shaft at one end close to the swinging member, and the rotating shaft is rotatably passed through the second bevel gear and the swinging member.

8. The high-protection micro switch for flood-proof doors according to claim 7, characterized in that: A protrusion is provided on the swinging member, a pawl is provided on the circumferential outer side of the protrusion, the second bevel gear is rotatably provided on the protrusion, and the second bevel gear is provided with a ratchet part that cooperates with the pawl, and the rotating shaft is rotatably passed through the second bevel gear and the protrusion.

9. The high-protection micro switch for flood-proof doors according to claim 1, characterized in that: The high-protection micro switch for the flood-proof door further comprises an elastic member, one end of which is connected to one end of the common terminal disposed in the housing, and the other end of which is connected to the swing member.

10. The high-protection micro switch for flood-proof doors according to claim 1, characterized in that: The high-protection micro switch for the flood-proof door further comprises an adjusting member, which is adjustably arranged on the housing and abuts against an end of the mounting bracket away from the swinging member.

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