Novel anti-falling switch

Abstract

The utility model discloses a novel anti-falling switch, which comprises a supporting assembly, a microswitch, a trigger piece and a limiting hole, the microswitch is fixedly arranged in the supporting assembly, the trigger piece is provided with an installation interface matched with an ejector rod of the microswitch, and the trigger piece can generate displacement along with the movement of the supporting assembly; the limiting hole is formed in the supporting assembly, and the triggering piece movably penetrates through the limiting hole, so that the moving range of the triggering piece is restrained; when the supporting assembly is in the first state, the trigger piece drives the ejector rod to trigger the contact of the microswitch to be closed under the action of external force. And when the supporting assembly is in the second state, the elastic reset piece in the microswitch drives the ejector rod to reset, so that the contact is separated and the loop is disconnected. The technical scheme of the utility model aims to provide the novel anti-falling switch which is convenient to assemble and occupies a small space.

Description

TECHNICAL FIELD

[0001] The utility model relates to anti -toppling switch technical field especially relates to a novel anti -toppling switch. BACKGROUND

[0002] Anti -toppling switch as an important safety protection device, is widely used in electric fan, warmer, balanced robot etc.

[0003] In prior art, anti -toppling switch is mainly divided into electronic and mechanical two categories. Electronic anti -toppling switch usually adopts gyroscope or acceleration sensor to carry out inclination detection, and can realize higher precision detection. However, this kind of design needs to integrate sensor module, signal processing circuit and control chip, so it is higher in hardware cost, which leads to its difficult wide application in low -end household appliances or small -size equipment.

[0004] And traditional mechanical anti -toppling switch (such as weight type or lever type) generally realizes inclination detection through multistage linkage mechanism. For example, weight is connected with microswitch through suspension device, when equipment inclines, weight swings and triggers switch;Another design adopts the cooperation of lever and slide rail, and opens and closes contact through displacement amplification drive. Although this kind of design is simple in structure, needs multiple movable parts (such as spring, slide rail and counterweight etc.), not only is assembling process tedious, but also parts are prone to wear after long -time use, leading to poor contact or false triggering, thereby greatly reducing its reliability. SUMMARY

[0005] The utility model discloses a novel anti -toppling switch, and aims at providing a kind of anti -toppling switch with reduced cost, convenient assembly and small space occupation, safe and reliable.

[0006] To achieve the above object, the novel anti -toppling switch provided by the utility model includes:

[0007] Supporting assembly;

[0008] Microswitch, the microswitch is fixed in the supporting assembly;

[0009] Trigger, the trigger has installation interface compatible with the top rod of the microswitch, and it can be displaced with the movement of the supporting assembly;And

[0010] Limiting hole, the limiting hole is equipped in the supporting assembly, and the trigger is movably arranged in the limiting hole, so as to restrict the movement range of trigger;

[0011] When the support assembly is in the first state, the trigger piece is driven by external force to drive the plunger of the micro switch to close the contact;

[0012] When the support assembly is in the second state, the elastic reset piece in the micro switch drives the plunger to reset, so that the contact is separated and the circuit is disconnected.

[0013] In a possible implementation, the limiting hole has a diameter slightly larger than the outer diameter of the trigger piece, so as to limit the displacement range of the trigger piece.

[0014] In a possible implementation, the support assembly comprises:

[0015] A support bottom plate, an accommodation groove being formed on the upper end face of the support bottom plate;

[0016] A fixing seat, the fixing seat being fixedly embedded in the accommodation groove, and an installation groove being formed on the upper end face of the fixing seat;

[0017] An L-shaped fixing sheet is arranged in the installation groove, one end of the L-shaped fixing sheet being fixed to the bottom face of the installation groove, and the other end of the L-shaped fixing sheet being fixedly connected with the micro switch.

[0018] In a possible implementation, a PCB board is further fixedly arranged in the installation groove, the PCB board being electrically connected with the micro switch, and the PCB board being used for transmitting the contact signal of the micro switch to an external circuit.

[0019] In a possible implementation, the installation interface is a sleeving structure, a clamping structure or a sliding fit structure, and the installation interface is matched with the shape of the plunger of the micro switch, so as to realize the linkage between the trigger piece and the plunger.

[0020] The technical scheme of the utility model discloses a novel anti-falling switch which is composed of a support assembly, a micro switch, a trigger piece and a limiting hole, can ensure that the equipment can stably operate in a normal working state, and can rapidly cut off the circuit when the equipment is tilted, thereby avoiding safety accidents caused by the falling of the equipment. The displacement range of the trigger piece is limited by the limiting hole, so that the trigger piece is prevented from being triggered by mistake, and the linkage between the trigger piece and the plunger of the micro switch ensures that the contact can be rapidly and reliably closed and disconnected. In addition, the anti-falling switch assembly has simple structure, and compared with other anti-falling switches, the anti-falling switch assembly has greatly reduced cost, is convenient to assemble, occupies small space and is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creating labor.

[0022] Fig. 1 It is the structural schematic view of one embodiment of the utility model;

[0023] Fig. 2 It is the exploded schematic view of one embodiment of the utility model;

[0024] Fig. 3 It is the structural schematic view of the utility model when not pouring;

[0025] Fig. 4 It is the structural schematic view of the utility model when pouring.

[0026] Explanation of the attached drawing number:

[0027] 1, support assembly;11, support bottom plate;111, accommodating groove;12, fixed seat;121, mounting groove;13, L-shaped fixed sheet;2, micro switch;21, top rod;3, trigger piece;31, mounting interface;4, limit hole;5, PCB board.

[0028] The realization, functional characteristics and advantages of the utility model will be further explained by combining with embodiments and referring to the attached drawings. Specific implementation

[0029] In order to make the purpose, technical scheme and advantages of the application more clear and explicit, the application will be further described in detail below by combining with the attached drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and are not used to limit the application.

[0030] In view of the problems in the background art, the utility model provides a novel anti-falling switch, comprising:

[0031] Support assembly;

[0032] Micro switch, the micro switch is fixed in the support assembly;

[0033] Trigger piece, the trigger piece has the mounting interface that is adapted with the top rod of the micro switch, and it can be displaced with the movement of the support assembly;And

[0034] Limit hole, the limit hole is arranged in the support assembly, and the trigger piece is movably arranged in the limit hole, thereby restricting the movement range of the trigger piece;

[0035] When the support assembly is in the first state, the trigger piece is driven by external force to drive the top rod to trigger the contact of the micro switch to close;

[0036] And when the support assembly is in the second state, the elastic reset piece in the micro switch drives the top rod to reset, so that the contact is separated and the circuit is disconnected.

[0037] Combination with reference Figs. 1 to 4 In this embodiment, the support assembly serves as the main support structure, directly contacting the ground, bearing the weight of the equipment and maintaining balance, and as the base part of the entire anti-falling switch. The micro switch is the core control element of the anti-falling switch, internally containing an elastic reset component (such as a compression spring or a torsional spring) and a contact mechanism. The top rod is connected to the micro switch housing through a hinged shaft, forming a lever fulcrum, and the other end extends to the installation interface of the trigger, which can rotate around the fulcrum with the movement of the trigger. The end of the top rod is provided with a protruding structure for directly pressing the contacts of the micro switch.

[0038] The trigger in this application is the driving component of the anti-falling switch, made of lightweight and wear-resistant materials (such as nylon or engineering plastics). Its structural features are cap-shaped or slider-shaped, and a limiting hole is provided on the support assembly, through which the trigger can move freely. Specifically, the top end of the trigger is connected to the top rod of the micro switch, and the bottom end is directly in contact with the installation surface of the equipment or affected by the gravity of the equipment. The limiting hole allows the trigger to move freely in the vertical direction, but limits its displacement in the left and right directions, thereby preventing accidental triggering of the trigger when the equipment is shaken. The side wall of the trigger is provided with a U-shaped or ring-shaped opening, which is precisely matched with the cross-sectional shape (such as cylindrical or flat) of the top rod, and is connected with the top rod through a sleeve joint or a clamping joint, ensuring quick installation and precise linkage.

[0039] The first state in this embodiment refers to when the equipment is placed stably on the installation surface such as the ground or wall, the support assembly is in close contact with the ground, and the trigger moves upward under the action of the gravity of the equipment or the ground reaction force. The vertical displacement of the trigger is transmitted to the top rod through the installation interface, driving the top rod to rotate upward around the hinged shaft. As the protruding structure at the end of the top rod presses the contacts of the micro switch, the contacts are closed, the circuit is conducted, and the equipment enters the normal working state. The second state refers to when the equipment is tilted (for example, the inclination angle exceeds 10°), the contact surface between the support assembly and the ground is reduced, and the trigger loses external support and moves downward under the action of gravity. At the same time, the elastic reset component (such as a compression spring, a torsional spring or an elastic sheet) inside the micro switch releases the stored energy, drives the top rod to rotate reversely around the fulcrum, and causes the end of the top rod to quickly separate from the contacts. When the contacts are separated, the circuit is disconnected, and the equipment immediately stops working, avoiding safety accidents caused by equipment falling.

[0040] In a possible implementation, the limiting hole has a diameter slightly larger than the outer diameter of the trigger, thereby limiting the displacement range of the trigger. Specifically, the limiting hole of the present embodiment achieves effective displacement restriction of the trigger through precise size design. The diameter of the limiting hole is slightly larger than the outer diameter of the trigger (for example, the hole diameter is 0.5-1 mm larger than the outer diameter of the trigger), so that the trigger can move freely in the vertical direction for a certain distance, but the activity space in the horizontal direction is strictly limited. This design not only avoids the false triggering of the micro switch due to excessive deviation of the trigger, but also ensures smooth movement of the trigger along the preset path when it is subjected to external force. The inner wall of the limiting hole is usually treated with smoothness (such as injection molding polishing or coating process) to reduce friction resistance and ensure fast response of the trigger. The cooperation of the limiting hole and the trigger, combined with the fixed structure of the support assembly, achieves low-cost and high-precision displacement control, and significantly improves the reliability of the anti-falling switch.

[0041] In a possible implementation, the support assembly comprises:

[0042] A support bottom plate, an accommodation groove being formed on the upper end face of the support bottom plate;

[0043] A fixed seat, the fixed seat being fixedly embedded in the accommodation groove, and an installation groove being formed on the upper end face of the fixed seat;

[0044] Wherein, an L-shaped fixing sheet is arranged in the installation groove, one end of the L-shaped fixing sheet being fixed to the bottom face of the installation groove, and the other end of the L-shaped fixing sheet being fixedly connected with the micro switch.

[0045] In combination with the description of Figs. 1 to 2 In the present embodiment, the support bottom plate is used as a basic bearing component, and is made of high-strength engineering plastic or aluminum alloy material through injection molding or stamping process. The bottom plate has a circular or rectangular plate structure, and is attached to the contour of the device shell at the bottom, and is provided with an anti-skid pad mounting position (such as a clamping groove or a pit) for embedding a silica gel or rubber anti-skid pad to enhance the friction force between the device and the contact surface. The upper end face of the bottom plate is formed with an accommodation groove through CNC machining or mold forming, and the size of the accommodation groove matches the outer contour of the fixed seat. The inner wall of the groove is provided with a positioning rib or a guide slope to ensure that the fixed seat does not shake after being embedded. The fixed seat is fixed in the accommodation groove of the support bottom plate by buckling or bolts, and the upper end face of the fixed seat is provided with an installation groove for fixing the micro switch and related accessories. The L-shaped fixing sheet is a fixing component of the micro switch, and is made of stainless steel or spring steel, which has strength and elasticity. The short side of the L-shaped fixing sheet is fixed vertically to the bottom face of the installation groove by self-tapping screws or rivets, and the long side of the L-shaped fixing sheet is fixed vertically to the side of the micro switch housing, and the end of the L-shaped fixing sheet is provided with a waist-shaped hole connected with the mounting lug of the micro switch by a lock bolt.

[0046] In a possible implementation, the mounting groove is further fixed with a PCB board, which is electrically connected with the micro switch, and is used for transmitting the contact signal of the micro switch to an external circuit. Specifically, the PCB board fixed in the mounting groove is fixed to the sidewall of the groove body by buckling or screwing, and the surface of the PCB board is provided with conductive lines and pads, which are electrically connected with the pins of the micro switch by soldering or plug-in terminals. The PCB board is used for transmitting the on-off signal of the contact of the micro switch to the main control circuit of the device, and preventing the contact from being damaged by overcurrent.

[0047] In a possible implementation, the mounting interface is a sleeving, clamping or sliding fitting structure, which is matched with the shape of the top rod of the micro switch, so as to realize the linkage between the trigger and the top rod.

[0048] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation of the present patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0049] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A new type of anti-latching switch, characterized in that, Comprise; Support assembly; Micro switch, the micro switch is fixed in the support assembly; Trigger, the trigger has a mounting interface matched with the top rod of the micro switch, and it can be displaced with the movement of the support assembly; And Limiting hole, the limiting hole is provided in the support assembly, and the trigger is movably provided in the limiting hole, so as to constrain the movement range of the trigger; Wherein, when the support assembly is in the first state, the trigger is driven by external force to drive the top rod to trigger the contact of the micro switch to close; And when the support assembly is in the second state, the elastic reset member in the micro switch drives the top rod to reset, so that the contact is separated and the circuit is disconnected.

2. The new anti-lash switch according to claim 1, characterized in that, The diameter of the limiting hole is slightly larger than the outer diameter of the trigger, so as to limit the displacement range of the trigger.

3. The new anti-lash switch according to claim 1, characterized in that, The support assembly comprises: Support bottom plate, the upper end face of the support bottom plate is formed with a containing groove; Fixed seat, the fixed seat is fixedly embedded in the containing groove, and the upper end face of the fixed seat is formed with a mounting groove; Wherein, the mounting groove is provided with an L-shaped fixing sheet, one end of the L-shaped fixing sheet is fixed to the bottom surface of the mounting groove, and the other end is fixedly connected with the micro switch.

4. The novel anti-latching switch according to claim 3, characterized in that The mounting groove is also provided with a PCB board, the PCB board is electrically connected with the micro switch, and is used for transmitting the contact signal of the micro switch to the external circuit.

5. The novel anti-latching switch according to any one of claims 1 to 4, characterized in that The mounting interface is a sleeving, clamping or sliding fit structure matched with the shape of the top rod of the micro switch, so as to realize the linkage of the trigger and the top rod.

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