CN219046271U - Anti-toppling switch and electric heater - Google Patents

Abstract

The utility model provides an anti-toppling switch which comprises a shell, a sealing box and a heavy ball, wherein the shell is connected with the sealing box to form a containing space, a telescopic ejector rod and an elastic piece are arranged in the containing space, a wiring structure is arranged at the bottom of the containing space, the heavy ball is placed on the ejector rod, the ejector rod drives the elastic piece to be in butt joint with the wiring structure, an arc-shaped surface is arranged on the inner wall of the shell, the shell is inclined for a set angle, the heavy ball is in butt joint with the arc-shaped surface, and the heavy ball is not separated from the ejector rod through the self gravity of the heavy ball and the supporting force of the arc-shaped surface, so that the anti-toppling switch is connected with a circuit. The utility model also discloses an electric heater. The anti-toppling switch and the electric heater provided by the utility model solve the problem that the anti-toppling switch fails due to the fact that the ground of the use environment is uneven, can be used in a floor mode and can be used in a portable mode, widen the use field and improve the user experience.

Description

Anti-toppling switch and electric heater

Technical Field

The utility model belongs to the technical field of electric heaters, and particularly relates to an anti-toppling switch and an electric heater.

Background

An electric heater is a product that converts electrical energy into thermal energy. With the reform of the heating system in China and the improvement of the living standard of people, new heating modes are continuously emerging, wherein electric heating is increasingly an indispensable heating mode. At present, domestic electric heating modes mainly comprise heating cable floor radiation heating, electric heating film heating, electric heaters and the like, wherein the electric heaters have the most vigorous development potential. The PTC electric heater generates heat through the ceramic electric heating element. The air forced convection device uses the fan to blow air to flow through the PTC electric heating element, so that the air forced convection device is used as a main heat exchange mode, can regulate the temperature at will, has soft air supply and quick temperature rise during working, has an automatic constant temperature function, and the PTC element generally has a waterproof function and is an ideal portable household electric heater. The vertical fan heater is light in weight, convenient to carry, suitable for various environments and capable of being used in most places in a room. For the existing vertical electric heater, the occupied area is small, so that the supporting surface is small, a certain dumping risk exists, and especially when a large pet or a child exists in a house, the electric heater is easy to knock down, so that property loss is caused.

The existing electric heater is required to be additionally provided with a dumping power-off switch in the machine body due to the requirement of installation regulations, so that safety accidents caused by falling of products are prevented. Most electric heaters can only be used on the ground after being additionally provided with the dumping power-off switch, cannot be used in a handheld manner, and a scene of failure of the dumping switch is caused due to uneven ground of the use environment of the electric heaters; and because the heating range of the electric heater product is limited, the product can possibly have a scene of head coldness, foot warmth when in use, and the user experience is very influenced.

Disclosure of Invention

The utility model mainly aims to provide an anti-toppling switch and an electric heater, which are used for solving the technical problem that the existing anti-toppling switch and electric heater can only be used on a very flat placing plane, and the toppling switch is invalid due to uneven bottom surface of a use environment.

In order to achieve the above purpose, the specific technical scheme of the anti-toppling switch and the electric heater of the utility model is as follows:

the utility model discloses an anti-toppling switch which comprises a shell, a sealing box and a heavy ball, wherein the shell is connected with the sealing box to form a containing space, a telescopic ejector rod and an elastic piece are arranged in the containing space, a wiring structure is arranged at the bottom of the containing space, the heavy ball is placed on the ejector rod, the ejector rod drives the elastic piece to be abutted against the wiring structure, an arc-shaped surface is arranged on the inner wall of the shell, the shell is inclined for a set angle, the heavy ball is abutted against the arc-shaped surface, and the heavy ball is not separated from the ejector rod by the self gravity of the heavy ball and the supporting force of the arc-shaped surface, so that the anti-toppling switch is connected with a circuit.

As a preferred embodiment provided by the utility model, the inclination setting angle of the shell is an included angle formed between the bottom surface of the sealing box and the placing surface of the anti-toppling switch, the included angle is set to be a degrees, the value range of a degrees is more than 0 degrees and less than or equal to 15.5 degrees, and the anti-toppling switch is connected with a circuit.

As the preferred embodiment provided by the utility model, the inner wall of the shell is provided with an arc-shaped surface along the circumferential direction, the ejector rod is arranged at the center of the accommodating space, the inclination angle of the shell is larger than the included angle a, so that the heavy ball is separated from the ejector rod to be contacted with the arc-shaped surface, and the anti-toppling switch breaks the circuit.

As a preferred embodiment provided by the utility model, the surface of the ejector rod is arranged as a plane, and the heavy ball is arranged at the center of the plane.

As a preferred embodiment provided by the utility model, the arc-shaped surface is provided with a transition fillet, the shell is inclined, and the heavy ball is abutted with the transition fillet.

As a preferred embodiment provided by the utility model, the inclination angle a of the transition fillet and the bottom surface of the sealing box and the anti-toppling switch placing surface are positively correlated.

As a preferred embodiment provided by the utility model, the diameter of the heavy ball is set as a, and the distance between the top of the heavy ball and the top wall of the shell is set as D, so that D > a is satisfied.

As a preferred embodiment provided by the utility model, the distance between the top of the heavy ball and the top wall of the shell is set as D, the distance between the outer wall of the heavy ball and the inner wall of the shell is set as C, and C > A/2 is satisfied when the anti-toppling switch is inclined by a degrees.

As a preferred embodiment provided by the utility model, a bayonet is arranged on the outer wall of the sealing box, a buckle is arranged on the outer wall of the shell, and the buckle is matched with the bayonet so as to fixedly connect the sealing box of the shell.

As a preferred embodiment provided by the utility model, the buckle comprises a plurality of buckles, and the plurality of buckles are arranged along the circumference of the bottom wall of the shell; the bayonet comprises a plurality of bayonets, and the bayonets are circumferentially arranged along the outer wall of the sealing box.

According to the preferred embodiment of the utility model, the ejector rod is arranged in the sealing box, the accommodating part is arranged in the ejector rod, the elastic piece is fixedly connected with the bottom of the sealing box, and the ejector rod is acted by the gravity of the heavy ball to enable the ejector rod to drive the elastic piece to move along the direction approaching to the wiring structure.

As the preferred embodiment provided by the utility model, the bottom opening of the ejector rod is provided with the flange, the sealing box is provided with the first limiting part and the second limiting part, and the flange is respectively abutted with the first limiting part or the second limiting part so as to limit the movement of the ejector rod in the sealing box.

As a preferred embodiment of the present utility model, the wiring structure is disposed at the bottom of the sealing box, and the wiring structure includes a first wiring piece, a second wiring piece and a spring piece, where a static terminal and a dynamic terminal are disposed on the spring piece, the first wiring piece is fixedly connected with the static terminal, and the second wiring piece contacts with or separates from the dynamic terminal to make the anti-toppling switch circuit be turned on or turned off.

In the preferred embodiment of the utility model, the elastic sheet is provided with a baffle plate, the baffle plate is abutted against the inner cavity of the ejector rod so as to enable the second wiring sheet to be in contact with the movable terminal, and the anti-toppling switch is connected; the baffle plate is separated from the inner cavity of the ejector rod, so that the second wiring piece is separated from the movable terminal, and the anti-toppling switch is disconnected.

As a preferred embodiment provided by the utility model, the bottom of the ejector rod is provided with a groove, the baffle plate is arranged in the groove, and the heavy ball drives the groove to move so as to enable the baffle plate to move in the inner cavity of the ejector rod, thereby realizing contact or separation between the baffle plate and the inner cavity of the ejector rod.

According to the preferred embodiment provided by the utility model, the wiring structure comprises a first wiring lug and a second wiring lug, a supporting column is arranged at the bottom of the sealing box, a conductive sheet is arranged on the supporting column, and the spring is connected with the conductive sheet so that the spring drives the conductive sheet to move on the supporting column, and therefore the contact and separation of the conductive sheet and the first wiring lug and the second wiring lug are realized.

The utility model also discloses an electric heater comprising the anti-toppling switch.

The anti-toppling switch and the electric heater provided by the utility model have the following advantages:

according to the anti-toppling switch and the electric heater provided by the utility model, the heavy ball is vertically and horizontally arranged on the ejector rod, the gravity ball always presses the ejector rod, and the toppling switch is in a normally closed state; when the product slope exceeds certain angle alpha, gravity ball presses on the inner chamber cambered surface, leads to gravity ball to follow the inner chamber cambered surface landing easily, no longer presses the ejector pin, the ejector pin kick-backs, and the switch disconnection circuit of toppling over has solved and has prevented toppling over the switch and has appeared because of the scene that toppling over the switch inefficacy at ordinary times of the unsmooth ground in service environment, both can fall to the ground and use, can portable use again, has widened use scene, improves user experience degree.

Drawings

FIG. 1 is a schematic diagram of an explosion structure of an anti-toppling switch provided by the utility model;

FIG. 2 is a cross-sectional view of a first anti-toppling switch according to the present utility model;

FIG. 3 is a second cross-sectional view of the anti-toppling switch provided by the utility model;

FIG. 4 is a cross-sectional view I of another embodiment of an anti-toppling switch provided by the present utility model;

FIG. 5 is a second cross-sectional view of another embodiment of the anti-toppling switch provided by the present utility model;

fig. 6 is a schematic structural diagram of a conductive sheet according to the present utility model;

FIG. 7 is a schematic view of the overall structure of the housing according to the present utility model;

FIG. 8 is a top view of a housing provided by the present utility model;

fig. 9 is a schematic diagram of the overall structure of the cover provided by the utility model;

fig. 10 is a schematic diagram of the overall structure of the case provided by the present utility model.

The figure indicates:

1. a housing; 11. a body; 12. a buckle; 2. heavy ball; 3. a push rod; 31. a flange; 32. a receiving chamber; 4. a cover body; 41. a first accommodating portion; 411. a limit part; 42. a second accommodating portion; 421. a bayonet; 5. a spring; 6. a case body; 61. a support column; 62. a first groove; 63. a second groove; 7. a first tab; 8. a second tab; 9. a conductive sheet; 91. and (5) mounting holes.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 10, the utility model provides an anti-toppling switch which is suitable for household appliances such as an electric heater, a humidifier and the like, and is used for controlling the on-off of the household appliances. According to the preferred embodiment provided by the utility model, the anti-toppling switch is applied to an electric heater. The problem that the dumping switch is invalid due to the fact that the ground of the product dumping switch is uneven in use environment is solved; the electric heater can be used in a floor mode and can be used in a portable mode, the use scene of the electric heater is widened, and user experience is improved.

As shown in fig. 1 and 2, the anti-toppling switch provided by the utility model comprises a shell 1, a sealing box and a heavy ball 2, wherein the shell 1 and the sealing box are connected to form a containing space, a telescopic ejector rod 3 and an elastic piece are arranged in the containing space, a wiring structure is arranged at the bottom of the containing space, and the heavy ball 2 is placed on the ejector rod 3 so that the ejector rod 3 drives the elastic piece to abut against the wiring structure, and thus, the anti-toppling switch is connected with a circuit; the shell 1 is inclined, the heavy ball 2 is separated from the ejector rod 3, and the ejector rod 3 moves along the direction away from the elastic piece under the restoring force of the elastic piece, so that the elastic piece is separated from the wiring structure, and the circuit breaking of the anti-toppling switch is realized. When the heavy ball 2 is vertically and horizontally arranged in the shell 1, the gravity ball always presses the ejector rod 3, and the dumping switch is in a normally closed state; when the product is inclined by a certain angle alpha DEG, the gravity ball is pressed on the cambered surface of the inner cavity, and the gravity ball easily slides off the cambered surface of the inner cavity due to the uneven cambered surface, so that the ejector rod 3 is not pressed any more, the ejector rod 3 rebounds, and the dumping switch breaks the circuit to play a role.

As shown in fig. 5, the bottom surface of the sealing box and the placing surface of the anti-toppling switch are provided with an included angle, the included angle is set to be a DEG, the value range of a DEG is more than 0 DEG and less than or equal to 15.5 DEG, and the anti-toppling switch is used for connecting a circuit. When the alpha degree is more than 0 and less than or equal to 15.5 degrees, the dumping switch is not effective, and the product is electrified; when alpha is more than 15.5 degrees, the dumping switch is effective, so that the product is powered off, and the safety protection effect is achieved.

Further, the housing 1 includes a body 11, an inner wall of the body 11 is provided with an arc surface in a circumferential direction, the ejector rod 3 is provided at a center of the accommodating space, and the housing 1 is inclined so that the heavy ball 2 is separated from the ejector rod 3 and is contacted with the arc surface. As a preferred embodiment provided by the present utility model, the surface of the ejector pin 3 is provided as a plane, and the heavy ball 2 is provided at the center of the plane. Of course, it is understood that the heavy ball 2 provided by the present utility model may be disposed at a non-center of the plane of the heavy ball 2, so long as the heavy ball 2 can be placed on the ejector pin 3.

Further, the arc-shaped surface is provided with a transition fillet, the shell 1 is inclined, and the heavy ball 2 is abutted against the transition fillet, so that the heavy ball 2 is separated from the surface of the ejector rod 3. The inner cavity cambered surface is related to the inclination angle alpha DEG, if the required safety inclination angle alpha DEG of the product is larger, the larger the fillet of the inner cavity cambered surface transition is, and if the required safety inclination angle alpha DEG is smaller, the smaller the required fillet of the inner cavity cambered surface transition is. The establishment of the relation between the cambered surface of the inner cavity and the inclination angle alpha degrees is as follows: when the small ball is in contact with the cambered surface, a tangent line is made by taking the contact point as a reference, and then a horizontal line is made to intersect with the tangent line, wherein the intersection angle is alpha degrees. And then carrying out stress analysis on the gravity G of the small ball, wherein the decomposing forces F1, F2 and F1 are perpendicular to the tangent line, F2 is perpendicular to F1, and the included angle between F1 and G is alpha degrees according to the trigonometric function theorem. Therefore, when the rounded angle of the cambered surface transition is larger, the larger the angle alpha is, the larger the component force F2 is, and the more easily the small ball slides from the cambered surface.

Further, the relation between the force components F1, F2 and the gravity G is f1=g×cos α, f2=g×sin α; therefore, the inclination angle a DEG of the transition fillet and the bottom surface of the sealing box and the anti-toppling switch placing surface are positively correlated.

Further, the distance between the top of the heavy ball 2 and the top wall of the housing 1 is set to D, and the distance between the outer wall of the heavy ball 2 and the inner wall of the housing 1 is set to C, which satisfies C > a/2 when the anti-toppling switch is tilted by a °. The diameter of the heavy ball 2 is set to a, and the distance between the top of the heavy ball 2 and the top wall of the housing 1 is set to D, satisfying D > a. The internal width of the cavity in the shell 1 is related to the diameter of the heavy ball 2. Assuming that the diameter of the heavy ball 2 is A, the internal width of the inner cavity of the shell 1 is B, the distance from the outer wall of the heavy ball 2 to the inner wall of the inner cavity is C, and the distance from the top of the heavy ball 2 to the side wall of the inner cavity of the shell 1 is D. In order to ensure that the heavy ball 2 can not generate high interference in the vertical direction in the inner cavity of the shell 1, D is required to be more than A; when the product is inclined by alpha degrees, the heavy ball 2 is separated from the ejector rod 3 to the cambered surface of the inner cavity and the ejector rod 3 is not pressed any more, so that C is required to be more than A/2 in order to ensure that the heavy ball 2 can smoothly move horizontally in the inner cavity.

Further, a bayonet 421 is provided on the outer wall of the sealing box, a buckle 12 is provided on the outer wall of the housing 1, and the buckle 12 and the bayonet 421 are matched to fixedly connect the sealing box of the housing 1. The shell 1 and the sealing box are fixed by adopting square buckles, so that the buckling positions of the other three directions are firmly fixed no matter which direction the shell 1 is separated from the sealing box, and the stability of the inner cavity and the fluency of the heavy ball 2 in the cambered surface of the inner cavity are ensured.

As a preferred embodiment, as shown in fig. 7 and 8, the catch 12 includes a plurality of catches 12 arranged circumferentially along the bottom wall of the housing 1; the bayonet 421 includes a plurality of bayonets 421 disposed circumferentially along an outer wall of the seal cartridge. The square buckle is in a concrete form that buckling positions are arranged in the upper, lower, left and right directions from the bottom view of the shell 1 and are fixed with the sealing box, so that the motion of the shell 1 in the four directions is limited.

Further, ejector rod 3 sets up in the inside of sealed box, and ejector rod 3 inside is provided with the accommodation portion, is provided with spring 5 in the accommodation portion, and spring 5 cover is established in the outside of the support column 61 of sealed box, and ejector rod 3 receives the gravity of heavy ball 2 and acts on and makes ejector rod 3 drive spring 5 along the direction that is close to the wiring structure and remove. The bottom opening part of the ejector rod 3 is provided with a flange 31, the sealing box is provided with a limiting part 411, the limiting part 411 comprises a first limiting part and a second limiting part, and the flange 31 is respectively abutted with the first limiting part or the second limiting part to limit the movement of the ejector rod 3 in the sealing box.

Further, the wiring structure sets up in the bottom of seal box, and the wiring structure includes first lug 7, second lug 8 and shell fragment, is provided with quiet terminal and movable terminal on the shell fragment, and first lug 7 and quiet terminal fixed connection, second lug 8 and movable terminal contact or separation are in order to make prevent empting switch circuit switch-on or break. The elastic sheet is provided with a baffle plate which is abutted against the elastic piece so as to enable the second wiring piece 8 to be in contact with the movable terminal, and the anti-toppling switch is connected; the baffle plate is separated from the elastic piece so as to separate the second wiring piece 8 from the movable terminal, and the anti-toppling switch is disconnected. The bottom of ejector rod 3 is provided with the recess, and the separation blade is arranged in the recess, and ejector rod 3 drive elastic component removes to make the separation blade remove in holding cavity 32, thereby realize separation blade and holding cavity 32 contact or separation.

The present utility model provides yet another embodiment which may be used as a preferred embodiment of the wiring structure of the present utility model, but the embodiment of the wiring structure described above is also within the scope of the present utility model.

Further, the wiring structure comprises a first wiring piece 7 and a second wiring piece 8, a support column 61 is arranged at the bottom of the sealing box, a conducting strip 9 is arranged on the support column 61, and the spring 5 is connected with the conducting strip 9, so that the spring 5 drives the conducting strip 9 to move on the support column 61, and contact and separation between the conducting strip 9 and the first wiring piece 7 and between the conducting strip 9 and the second wiring piece 8 are achieved.

Specifically, the sealing box comprises a cover body 4 and a box body 6, the cover body 4 and the box body 6 are fastened and fixed, and the fixing modes such as a fastener 12 and a screw can be adopted, so long as the fixing of the box body 6 and the cover body 4 can be realized.

Further, the cover 4 includes a first accommodating portion 41 and a second accommodating portion 42, and the first accommodating portion 41 and the second accommodating portion 42 are communicated to move the jack 3 and the elastic member in the first accommodating chamber 32 and the second accommodating chamber 32. The outer wall of the second accommodating portion 42 is provided with a bayonet 421, so that the bayonet 421 and the buckle 12 of the outer wall of the housing 1 are inserted and fixed.

Further, as shown in fig. 10, the bottom of the sealing case is provided with a support column 61, and opposite sides of the sealing case are provided with a first groove 62 and a second groove 63, the first tab 7 is fixed on the first groove 62, and the second tab 8 is fixed on the second groove 63, so that the first tab 7 and the second tab 8 are fixed on both sides of the sealing case, respectively.

As shown in fig. 6, the conductive sheet 9 is provided with a mounting hole 91, the mounting hole 91 and the support column 61 are fixedly inserted, and the mounting hole 91 is arranged at the center of the conductive sheet 9, so that two sides of the conductive sheet 9 are respectively contacted with the first wiring sheet 7 and the second wiring sheet 8, the conductive sheet 9 is contacted with the first wiring sheet 7 and the second wiring sheet 8, the anti-toppling switch is electrified, two sides of the conductive sheet 9 are respectively separated from the first wiring sheet 7 and the second wiring sheet 8, and the conductive sheet 9 is separated from the first wiring sheet 7 and the second wiring sheet 8, so that the anti-toppling switch is powered off.

The utility model also provides an electric heater, which comprises the anti-toppling switch.

According to the anti-toppling switch and the electric heater provided by the utility model, the heavy ball 2 is vertically and horizontally arranged on the ejector rod 3, the gravity ball always presses the ejector rod 3, and the toppling switch is in a normally closed state; when the product slope exceeds certain angle alpha, gravity ball presses on the inner chamber cambered surface, leads to gravity ball to follow the inner chamber cambered surface landing easily, no longer presses ejector pin 3, ejector pin 3 kick-backs, and the switch disconnection circuit of toppling over has solved and has prevented toppling over the switch and has fallen to the ground the use situation of switch failure because of the unsmooth level of service environment ground appears, both can fall to the ground and use, can portable use again, has widened use scene, improves user experience degree.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (17)

1. The utility model provides a prevent empting switch, its characterized in that, includes casing, sealing box and heavy ball, the casing with sealing box is connected in order to form accommodation space, be provided with telescopic ejector pin and elastic component in the accommodation space, the bottom in accommodation space is provided with wiring structure, heavy ball is placed on the ejector pin, the ejector pin drive the elastic component with wiring structure looks butt, be provided with the arcwall face on the inner wall of casing, the casing slope sets for the angle, heavy ball with arcwall face looks butt, through heavy ball's own gravity with arcwall face's holding power makes heavy ball does not break away from the ejector pin, thereby realizes prevent empting switch-on circuit.

2. The anti-toppling switch according to claim 1, wherein the housing is inclined at an angle set to an angle a between a bottom surface of the sealing case and a placement surface of the anti-toppling switch, the angle a is set to a ° and has a value ranging from 0 ° < a° to 15.5 °, and the anti-toppling switch turns on a circuit.

3. The anti-toppling switch according to claim 2, wherein the inner wall of the housing is provided with an arc surface along the circumferential direction, the ejector rod is provided at the center of the accommodating space, and the housing is inclined by an angle greater than an included angle a ° so that the heavy ball is separated from the contact between the ejector rod and the arc surface, and the anti-toppling switch breaks the circuit.

4. The anti-toppling switch according to claim 2, wherein the surface of the plunger is provided as a plane, and the weight ball is provided at the center of the plane.

5. The anti-toppling switch of claim 1, wherein the arcuate surface is provided with a transition fillet, the housing is inclined, and the heavy ball abuts the transition fillet.

6. The anti-toppling switch of claim 5, wherein the angle of inclination a of the transition fillet and the bottom surface of the sealing box and the anti-toppling switch placement surface are positively correlated.

7. The anti-toppling switch of claim 1, wherein D > a is satisfied if the diameter of the heavy ball is set to a and the distance between the top of the heavy ball and the top wall of the housing is set to D.

8. The anti-toppling switch according to claim 7, wherein a distance between a top of the heavy ball and a top wall of the housing is set to D, and a distance between an outer wall of the heavy ball and an inner wall of the housing is set to C, satisfying C > a/2 when the anti-toppling switch is tilted by a °.

9. The anti-toppling switch according to claim 1, wherein a bayonet is provided on an outer wall of the sealing box, a buckle is provided on an outer wall of the housing, and the buckle and the bayonet cooperate to fixedly connect the sealing box of the housing.

10. The anti-toppling switch according to claim 9, wherein the catch includes a plurality of catches, a plurality of catches being disposed circumferentially along the bottom wall of the housing; the bayonet comprises a plurality of bayonets, and the bayonets are circumferentially arranged along the outer wall of the sealing box.

11. The anti-toppling switch according to claim 1, wherein the ejector rod is disposed inside the sealing box, the elastic member is fixedly connected to the bottom of the sealing box, and the ejector rod is acted by the gravity of the heavy ball to make the ejector rod drive the elastic member to move along a direction approaching to the wiring structure.

12. The anti-toppling switch according to claim 11, wherein a flange is disposed at the bottom opening of the ejector rod, a first limiting portion and a second limiting portion are disposed on the sealing box, and the flange is respectively abutted against the first limiting portion or the second limiting portion so as to limit movement of the ejector rod in the sealing box.

13. The anti-toppling switch according to claim 11, wherein the wiring structure is disposed at the bottom of the sealing box, the wiring structure includes a first wiring piece, a second wiring piece and a spring piece, a static terminal and a movable terminal are disposed on the spring piece, the first wiring piece is fixedly connected with the static terminal, and the second wiring piece is contacted with or separated from the movable terminal so as to switch on or off the anti-toppling switch circuit.

14. The anti-toppling switch according to claim 13, wherein a blocking piece is provided on the elastic piece, the ejector rod is provided with an internal cavity, and the blocking piece is abutted against the internal cavity of the ejector rod so as to make the second wiring piece contact with the movable terminal, and the anti-toppling switch is turned on; the baffle plate is separated from the inner cavity of the ejector rod, so that the second wiring piece is separated from the movable terminal, and the anti-toppling switch is disconnected.

15. The anti-toppling switch according to claim 14, wherein a groove is provided in the bottom of the ejector rod, the blocking piece is disposed in the groove, and the heavy ball drives the groove to move so that the blocking piece moves in the inner chamber of the ejector rod, thereby enabling the blocking piece to contact with or separate from the inner chamber of the ejector rod.

16. The anti-toppling switch according to claim 11, wherein the wiring structure comprises a first wiring tab and a second wiring tab, a support column is provided at the bottom of the sealing box, a conductive sheet is provided on the support column, and the elastic member is connected to the conductive sheet, so that the elastic member drives the conductive sheet to move on the support column, thereby achieving contact and separation between the conductive sheet and the first wiring tab and the second wiring tab.

17. An electric heater comprising an anti-toppling switch as claimed in any one of claims 1 to 16.

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