CN217881318U

CN217881318U - Low-sensitive anti-toppling switch for electric heater

Info

Publication number: CN217881318U
Application number: CN202222737084.XU
Authority: CN
Inventors: 张军峰
Original assignee: Foshan Shunde Yuanfeng Electronics Co ltd
Current assignee: Foshan Shunde Yuanfeng Electronics Co ltd
Priority date: 2022-10-18
Filing date: 2022-10-18
Publication date: 2022-11-22
Anticipated expiration: 2032-10-18

Abstract

The utility model relates to a low-sensitive anti-toppling switch for an electric heater, which belongs to the technical field of anti-toppling switches and comprises a shell, a micro switch, a gravity ball and a swinging piece, wherein a vertical cavity is arranged in the shell; the micro switch is positioned outside the lower part of the vertical cavity; the gravity ball is movably arranged in the vertical cavity; the swinging piece is positioned outside the gravity ball and is arranged on the microswitch in a swinging way; the micro switch is provided with a switch touch piece; the gravity ball interacts or separates with the swinging piece when moving; the swinging piece drives the switch touch piece to move towards the direction of the micro switch under the action of the gravity ball so as to enable the micro switch to be in a conducting state; the switch touch piece moves towards the direction far away from the micro switch when the gravity ball and the swinging piece are separated from each other, so that the micro switch is in a closed state. This low sensitive type anti-toppling switch can avoid the electric heater problem that the erroneous judgement appears when the non-topples over, ensures that the electric heater just can automatic disconnection when really appearing toppling over.

Description

Low-sensitive anti-toppling switch for electric heater

Technical Field

The utility model relates to a prevent empting switch technical field, specifically a switch is prevented empting by low sensitive type for electric heater.

Background

The electric heater has been widely used in winter, and the safety of electric heater also becomes current society and pays attention to. The existing electric heater needs a dumping switch for switching off the work after dumping to protect.

For example, chinese utility model patent CN213635835U discloses an anti-tip switch and an electric heater, wherein the cavity comprises a rolling area and a fixed area which are arranged up and down, the fixed area is funnel-shaped with a large top and a small bottom, the rear side wall of the rolling area is provided with an inner concave arc surface which is in conflict with a rear half arc of the heavy ball spherical surface, and the half arc extends in an up-down arc shape; the switch control assembly is provided with a touch end positioned at the bottom of the fixed area, the bottom of the heavy ball abuts against the touch end, and the switch control assembly is controlled by the touch end to be switched on or switched off.

When a user works or plays outdoors in winter, an electric heater is usually placed on an open vehicle, and the vehicle can vibrate, shake, jump or swing in different sizes when running on an uneven road as well known.

In the above-mentioned structure, heavy ball no matter is big or small vibrations, rock, beat or swing, can all move about at will in roll district and fixed area, but owing to touch the end and be located under the heavy ball bottom, consequently just count little vibrations, rock, beat or swing, heavy ball all can and the on-off control subassembly between can appear discontinuous effect and separation phenomenon, lead to micro-gap switch often to appear triggering or not problem that triggers, its sensitivity is high, the erroneous judgement problem is serious, lead to the electric heater can't be applicable to the vehicle that goes on unevenness's road.

Therefore, further improvements are necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low sensitive type anti-overturning switch for electric heater to overcome the weak point among the prior art.

The low-sensitivity anti-toppling switch for the electric heater comprises a shell, a micro switch, a gravity ball and a swinging piece, wherein a vertical cavity is arranged in the shell; the microswitch is positioned outside the lower part of the vertical cavity; the gravity ball is movably arranged in the vertical cavity; the swinging piece is positioned outside the gravity ball and arranged on the microswitch; the micro switch is provided with a switch touch piece; the gravity ball interacts or separates from the pendulum when active.

The swinging piece drives the switch touch piece to move towards the direction of the micro switch under the action of the gravity ball, so that the micro switch is in a conducting state.

The switch touch piece moves in the direction away from the micro switch when the gravity ball and the swinging piece are separated from each other, so that the micro switch is in a closed state.

The microswitch is fixedly arranged on the shell; one end of the swinging piece extends towards the side part of the vertical cavity, and the other end of the swinging piece is arranged on the microswitch in a swinging mode.

The swinging piece is provided with a swinging part and is arranged on the microswitch in a swinging way through the swinging part; the swinging part is provided with an L-shaped bending section facing the micro switch, and the L-shaped bending section extends towards the side part of the vertical cavity to form an arc-shaped bending section; the gravity ball interacts or separates with the arc bending section along the direction perpendicular to the tangent direction of the gravity ball and the arc bending section when the gravity ball moves.

The vertical cavity is cylindrical, and the upper end part and the lower end part of the vertical cavity are respectively arranged in a conical manner; a notch is formed in the side part of the lower end of the vertical cavity; the arc-shaped bending section and/or the L-shaped bending section extend into the vertical cavity through the notch.

The position of the side part of the vertical cavity corresponding to the arc-shaped bending section is also provided with an avoidance position.

The switch touch piece is located swing portion top, be provided with the elastic component that resets between the switch touch piece and the micro-gap switch, the switch touch piece passes through the elastic component that resets is flexible to be set up on the micro-gap switch.

When the gravity ball interacts with the swinging piece, the L-shaped bending section drives the switch touch piece to overcome the elasticity of the reset elastic piece and move towards the direction of the micro switch.

When the gravity ball and the swinging piece are separated from each other, the switch touch piece is reset and moves in the direction away from the micro switch through the elastic force of the reset elastic piece, and the switch touch piece acts on the L-shaped bending section during the reset and moves and drives the swinging piece to reset along with the swinging piece.

The height that the arc bending section extends and the height ratio that vertical cavity set up is 1: 5-3: 5.

the diameter of the gravity ball and the height ratio of the vertical cavity are 1: 5-3: 5.

the shell comprises a first shell and a second shell; the first shell and the second shell are mutually fixed through buckles, fasteners and/or stickers, and the first shell and the second shell form the vertical cavity after being mutually fixed.

The first shell is provided with a first fixing part; the second shell is provided with a second fixing part; the first fixing part and the second fixing part are respectively positioned on the side part of the lower end of the vertical cavity, and an assembly groove is formed between the first fixing part and the second fixing part; the micro switch is positioned in the assembly groove, and two side faces of the micro switch are respectively fixedly matched with the first fixing part and the second fixing part.

The utility model discloses an improvement of above-mentioned structure utilizes the activity of gravity ball in perpendicular intracavity to make the swing piece that is located the gravity ball outside to swing, and finally realize that the micro-gap switch that is located the perpendicular chamber lower part outside triggers or does not trigger.

After the electric heater emptys because big vibrations, rocking, beat or swing appear, the gravity ball separates with the swing piece promptly, and switch touching piece at this moment can be towards the direction activity of keeping away from micro-gap switch to make micro-gap switch be in the off-state, and not trigger, the electric heater stop work, in order to avoid the electric heater to topple over the potential safety hazard that the back continuation work brought.

Because the swing piece is the side direction setting, the gravity ball can not leave the swing piece because of little vibrations, rock, beat or swing, the gravity ball all the time with swing piece interact to guarantee that micro-gap switch is in on-state, and trigger, make the electric heater can not because of little vibrations, rock, beat or swing stop work, thereby avoid the electric heater problem that the erroneous judgement appears when the non-topples over, ensure that the electric heater just can automatic disconnection when really appearing toppling over, improve user's use and experience.

Drawings

Fig. 1 is a schematic view of an assembly structure according to an embodiment of the present invention.

Fig. 2 is a schematic view of an assembly structure at another angle according to an embodiment of the present invention.

Fig. 3 is an exploded schematic view of an embodiment of the present invention.

Fig. 4 is an exploded view of another embodiment of the present invention.

FIG. 5 is a schematic diagram of the micro switch being turned on and triggered.

FIG. 6 is a schematic diagram of the microswitch closed and not activated.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

The present invention will be further described with reference to the accompanying drawings and examples.

Referring to fig. 1-6, the low-sensitive anti-toppling switch for the electric heater comprises a shell, a micro switch 1, a gravity ball 2 and a swinging piece 3, wherein a vertical cavity 4 is arranged in the shell; the microswitch 1 is positioned at the outer side of the lower part of the vertical cavity 4; the gravity ball 2 is movably arranged in the vertical cavity 4; the swinging piece 3 is positioned outside the gravity ball 2 and is arranged on the microswitch 1; the microswitch 1 is provided with a switch touch piece 10; the gravity ball 2 interacts or separates from the pendulum 3 when active.

The swinging piece 3 drives the switch touch piece 10 to move towards the micro switch 1 through the action of the gravity ball 2, so that the micro switch 1 is in a conducting state.

The switch touch member 10 moves in a direction away from the microswitch 1 when the gravity ball 2 and the swinging member 3 are separated from each other, so that the microswitch 1 is in an off state.

The prevent empting switch of this embodiment uses in the electric heater, and the cooperation of preventing empting switch and electric heater is used and is belonged to prior art, now no longer gives unnecessary details.

Meanwhile, the electric heater with the anti-toppling switch can be used for vehicles (such as golf carts, terrace weeding carts, material harvesting carts and the like) working outdoors or playing in winter.

The present embodiment utilizes the movement of the gravity ball 2 in the vertical cavity 4 to make the swinging member 3 located outside the gravity ball 2 swing (which can swing through the action of the gravity ball 2 and also through the action of the switch touch member 10), and finally realize the triggering or non-triggering of the micro switch 1 located outside the lower part of the vertical cavity 4.

After the electric heater emptys because the big vibrations that the vehicle produced, rock, beat or the swing appears, gravity ball 2 and swing 3 separation, switch touching 10 this moment can be towards the direction activity of keeping away from micro-gap switch 1 to make micro-gap switch 1 be in the off-state, and not trigger, electric heater stop work, in order to avoid the electric heater to continue the potential safety hazard that the work brought after empting.

Because swing 3 is the side direction setting, gravity ball 2 can not be because of the little vibrations that the vehicle produced, rock, beat or swing and leave swing 3, gravity ball 2 all the time with swing 3 interact, in order to guarantee that micro-gap switch 1 is in the trigger state, and trigger, make the electric heater of placing on the vehicle (like golf cart, terrace weeding car, material reaping car etc.) can not be because of little vibrations, rock, beat or swing stop work, thereby avoid the electric heater problem that erroneous judgement appears when the non-topples over, ensure that the electric heater just can automatic disconnection when really appearing toppling over, improve user's use and experience.

Specifically, the microswitch 1 is fixedly arranged on the housing; one end of the swinging piece 3 extends towards the side part of the vertical cavity 4, and the other end is arranged on the microswitch 1 in a swinging way.

The swinging piece 3 is provided with a swinging part 5 and is arranged on the microswitch 1 in a swinging way through the swinging part 5; an L-shaped bent section 6 facing the microswitch 1 is arranged on the swinging part 5, and an arc-shaped bent section 7 extends from the L-shaped bent section 6 to the side part of the vertical cavity 4; the gravity ball 2 interacts or separates with the arc bending section 7 along the direction perpendicular to the tangent direction of the gravity ball 2 and the arc bending section 7 when moving.

The oscillating piece 3 of the present embodiment is made of a metal material or plastic, which has a certain elasticity. When the arc-shaped bending section 7 interacts with the gravity ball 2, the swinging part 3 slightly elastically deforms and swings and avoids the gravity ball 2, so that the L-shaped bending section 6 acts on the switch touch part 10. When the arc bending section 7 and the gravity ball 2 are separated from each other, the swinging part 3 can elastically and automatically reset, and meanwhile, the switch touch part 10 can also move towards the direction far away from the micro switch 1.

The vertical cavity 4 is cylindrical, and the upper end part and the lower end part of the vertical cavity are respectively arranged in a conical shape; the side part of the lower end of the vertical cavity 4 is provided with a notch 8; the curved bend 7 and/or the L-shaped bend 6 extend into the vertical cavity 4 through the gap 8.

The side part of the vertical cavity 4 corresponding to the arc-shaped bent section 7 is also provided with an avoidance position 9. When the arc bending section 7 interacts with the gravity ball 2, the arc bending section 7 enters the avoiding position 9. In addition, in order to avoid the gravity ball 2 from being stuck in the vertical cavity 4, when the arc-shaped bending section 7 and the gravity ball 2 are separated from each other, the outer end of the arc-shaped bending section 7 also extends into the avoiding position 9, and the state is as shown in fig. 6, so as to ensure that the gravity ball 2 does not enter the avoiding position 9 and is stuck on the arc-shaped bending section 7, and ensure that the gravity ball 2 can normally move in the vertical cavity 4.

Specifically, the switch contact 10 is positioned above the swing portion 5, the return elastic member 15 is provided between the switch contact 10 and the microswitch 1, and the switch contact 10 is provided on the microswitch 1 by extending and contracting the return elastic member 15.

In this embodiment, the elastic return element 15 may be a spring, a tension spring, or a compression spring, and is elastically connected to the switch touch element 10 and the micro switch 1, respectively.

When the gravity ball 2 interacts with the oscillating piece 3, the L-shaped bending section 6 drives the switch touch piece 10 to move towards the switch touch piece 10 against the elastic force of the elastic return piece 15.

When the gravity ball 2 and the swinging member 3 are separated from each other, the switch touch member 10 is reset and moved in a direction away from the microswitch 1 by the elastic force of the reset elastic member 15, and the switch touch member 10 acts on the L-shaped bending section 6 during the reset movement and drives the swinging member 3 to follow the reset.

The height ratio of the extension of the arc bending section 7 to the height of the vertical cavity 4 is 1: 5-3: 5.

the ratio of the diameter of the gravity ball 2 to the height of the vertical cavity 4 is 1: 5-3: 5.

the ratio of the diameter of the gravity ball 2 to the cylindrical inner diameter of the vertical cavity 4 is 2:3-5:6.

in this embodiment, the ratio of the extended height of the arc-shaped bending section 7 to the height of the vertical cavity 4 is 1:2, the ratio of the diameter of the gravity ball 2 to the height of the vertical cavity 4 is 1:3, and the ratio of the diameter of the gravity ball 2 to the cylindrical inner diameter of the vertical cavity 4 is 4:5. therefore, only after the electric heater really topples over, the gravity ball 2 can be separated from the swinging piece 3, when the swinging piece 3 has no acting force applied by the gravity ball 2, the switch touch piece 10 can reset through the elastic force of the reset elastic piece 15, and the micro switch 1 is not triggered.

The shell comprises a first shell 11 and a second shell 12; the first housing 11 and the second housing 12 are fixed to each other by a snap, a fastener and/or an adhesive, and the first housing 11 and the second housing 12 form the vertical cavity 4 after being fixed to each other.

Be provided with clamping part on the first shell 11 of this embodiment, be provided with buckle cooperation portion on the second shell 12, and fixed through buckle cooperation portion and clamping part buckle, the equipment of not only being convenient for can improve production efficiency, convenient to detach moreover to subsequent maintenance, maintenance.

In addition, fixing holes are respectively formed between the first housing 11 and the second housing 12, and fastening members are inserted through the fixing holes, so that the assembling stability between the first housing 11 and the second housing 12 is further enhanced.

The first housing 11 is provided with a first fixing part 13; the second casing 12 is provided with a second fixing part 14; the first fixing part 13 and the second fixing part 14 are respectively positioned on the side part of the lower end of the vertical cavity 4, and an assembly groove is formed between the first fixing part and the second fixing part; the microswitch 1 is positioned in the assembly groove, and two side surfaces of the microswitch are respectively fixedly matched with the first fixing part 13 and the second fixing part 14

Wherein, be provided with the location projection on first fixed part 13, the second fixed part 14 respectively, micro-gap switch 1 both sides face is provided with the locating hole respectively, and micro-gap switch 1 is fixed a position on the projection through the locating hole in advance when the assembly, recycles the fastener afterwards and realizes micro-gap switch 1, first shell 11, the fixed of second shell 12, and the assembly is convenient, and firm.

In this embodiment, the microswitch 1 is further provided with a movable contact piece, a conduction terminal and an insulation bulge; the switch touch piece 10 is in transmission connection with the movable contact piece; the conduction terminal and the insulation bulges are arranged at intervals and are positioned at two sides of the movable contact piece.

The working principle is as follows:

as shown in fig. 5, the gravity ball 2 acts on the arc-shaped bending section 7, so that the swinging member 3 swings on the micro switch 1 through the swinging portion 5, and at the same time, the L-shaped bending section 6 drives the switch touch member 10 to overcome the elastic force of the reset elastic member 15 and move towards the direction of the switch touch member 10, the switch touch member 10 at this time is pressed down and drives the movable contact piece to contact with the conduction terminal, the micro switch 1 is in a conduction state and is triggered, and the circuit or signal of the electric heater is switched on and works.

As shown in fig. 6, because big vibrations, rock, beat or the swing back of empting appears, gravity ball 2 separates with arc bending section 7 promptly, swing 3 does not receive the effort of gravity ball 2 this moment, switch touching 10 can reset the activity through the elasticity that resets elastic component 15 simultaneously, switch touching 10 this moment does not press, and drive movable contact piece and insulating protruding contact, micro-gap switch 1 is in the off-state, and does not trigger, the circuit or the signal of electric heater are broken off, and out of work, the electric heater stop work, with the potential safety hazard of avoiding the electric heater to continue work after empting and bringing.

The foregoing is a preferred embodiment of the present invention showing and describing the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are intended to illustrate the principles of the invention, but rather that various changes and modifications may be made without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides an electric heater is with preventing empting switch of low sensitive type, includes the casing to and micro-gap switch (1), gravity ball (2), swing piece (3), its characterized in that: a vertical cavity (4) is arranged in the shell; the microswitch (1) is positioned outside the lower part of the vertical cavity (4); the gravity ball (2) is movably arranged in the vertical cavity (4); the swinging piece (3) is positioned outside the gravity ball (2) and is arranged on the microswitch (1); the micro switch (1) is provided with a switch touch piece (10); the gravity ball (2) interacts or separates from the oscillating piece (3) when moving;

the swinging piece (3) drives the switch touch piece (10) to move towards the direction of the microswitch (1) under the action of the gravity ball (2) so as to enable the microswitch (1) to be in a conducting state;

the switch touch piece (10) moves towards the direction far away from the microswitch (1) when the gravity ball (2) and the swinging piece (3) are separated from each other, so that the microswitch (1) is in a closed state.

2. The low-sensitive anti-toppling switch for the electric heater of claim 1, wherein: the microswitch (1) is fixedly arranged on the shell; one end of the swinging piece (3) extends towards the side part of the vertical cavity (4), and the other end of the swinging piece is arranged on the microswitch (1) in a swinging mode.

3. The low-sensitive anti-toppling switch for the electric heater of claim 2, wherein: the swinging piece (3) is provided with a swinging part (5) and is arranged on the microswitch (1) in a swinging way through the swinging part (5); an L-shaped bending section (6) facing the microswitch (1) is arranged on the swinging part (5), and an arc-shaped bending section (7) extends from the L-shaped bending section (6) to the side part of the vertical cavity (4); when the gravity ball (2) moves, the gravity ball (2) interacts or separates with the arc bending section (7) along the direction perpendicular to the tangency direction of the gravity ball (2) and the arc bending section (7).

4. The low-sensitivity anti-toppling switch for the electric heater of claim 3, wherein: the vertical cavity (4) is cylindrical, and the upper end part and the lower end part of the vertical cavity are respectively arranged in a conical manner; a notch (8) is formed in the side part of the lower end of the vertical cavity (4); the arc-shaped bending section (7) and/or the L-shaped bending section (6) extend into the vertical cavity (4) through the notch (8).

5. The low-sensitivity anti-toppling switch for the electric heater of claim 4, wherein: the position of the side part of the vertical cavity (4) corresponding to the arc-shaped bending section (7) is also provided with an avoidance position (9).

6. The low-sensitivity anti-toppling switch for the electric heater of claim 3, wherein: the switch touch piece (10) is positioned above the swinging part (5), a reset elastic piece (15) is arranged between the switch touch piece (10) and the microswitch (1), and the switch touch piece (10) is arranged on the microswitch (1) in a telescopic mode through the reset elastic piece (15);

when the gravity ball (2) interacts with the swinging piece (3), the L-shaped bending section (6) drives the switch touch piece (10) to overcome the elasticity of the reset elastic piece (15) and move towards the direction of the microswitch (1);

gravity ball (2) with during swing piece (3) alternate segregation, switch touching piece (10) are passed through the elasticity of elastic component (15) that resets is towards keeping away from the direction of micro-gap switch (1) activity that resets, switch touching piece (10) are used in when the activity that resets on L shape bending segment (6), and the drive swing piece (3) are followed and are reset.

7. The low-sensitivity anti-toppling switch for the electric heater of claim 3, wherein: the height ratio of the extension of the arc bending section (7) to the height of the vertical cavity (4) is 1: 5-3: 5.

8. the low-sensitive anti-toppling switch for the electric heater of claim 1, wherein: the diameter of the gravity ball (2) is 1 to the height ratio of the vertical cavity (4): 5-3: 5.

9. the low-sensitive anti-toppling switch for the electric heater of claim 1, wherein: the shell comprises a first shell (11) and a second shell (12); the first shell (11) and the second shell (12) are fixed to each other through a buckle, a fastener and/or a sticker, and the vertical cavity (4) is formed after the first shell (11) and the second shell (12) are fixed to each other.

10. The low-sensitivity anti-toppling switch for the electric heater of claim 9, wherein: a first fixing part (13) is arranged on the first shell (11); a second fixing part (14) is arranged on the second shell (12); the first fixing part (13) and the second fixing part (14) are respectively positioned on the side part of the lower end of the vertical cavity (4), and an assembly groove is formed between the first fixing part and the second fixing part; the microswitch (1) is positioned in the assembling groove, and two side faces of the microswitch are respectively fixedly matched with the first fixing part (13) and the second fixing part (14).