CN210744339U

CN210744339U - Improved structure of coupler

Info

Publication number: CN210744339U
Application number: CN201922040525.9U
Authority: CN
Inventors: 黄普添
Original assignee: Guangdong Huilaide Temperature Controller Co ltd
Current assignee: Guangdong Huilaide Temperature Controller Co ltd
Priority date: 2019-11-23
Filing date: 2019-11-23
Publication date: 2020-06-12
Anticipated expiration: 2029-11-23

Abstract

The utility model discloses a coupler improves structure, including pedestal, mounting panel and overheat protection device, the last touch switch that is provided with of conducting circuit, touch switch include movable contact spring and static contact, and overheat protection device includes temperature sensing particle, push rod and leading truck, and mounting panel, conducting circuit and leading truck set up on the pedestal, are formed with the temperature sensing chamber on the mounting panel, and the temperature sensing particle is located the temperature sensing intracavity, leaves the space between leading truck and the temperature sensing chamber, and push rod one end makes movable contact and static contact offset, and the push rod other end offsets with temperature sensing particle one end, and the temperature sensing particle other end offsets with temperature sensing chamber top. This kind of coupler, heat on the mounting panel can transmit for the temperature sensing granule, and the temperature sensing granule reaches and sets for the temperature value can warp, and the push rod has lost the pushing down force of temperature sensing granule and has moved up to make contact and static contact separation outage, realize overheat protection's effect, its whole simple structure, reasonable, the cooperation required precision is low, the equipment is easy, the pedestal security performance is high.

Description

Improved structure of coupler

Technical Field

The utility model belongs to the technical field of the coupler technique that household electrical appliances used and specifically relates to a take overheat protection function's coupler to improve structure.

Background

Existing coupled power-on products, such as: the electric heating kettle uses a coupler, however, the existing coupler structure generally comprises an upper coupler and a lower coupler, the upper coupler comprises a seat body, a conductive circuit for inputting a power supply is arranged on the seat body, a touch switch is arranged on the conductive circuit, the touch switch comprises a movable contact piece and a static contact piece, and when the upper coupler is seated on the lower coupler, the upper coupler is connected with an external power supply through the lower coupler; however, when the current of the upper coupler is too large or the heating temperature is too high, the upper coupler cannot be immediately powered off for protection, so that household appliances are damaged, and even certain potential safety hazards exist.

Therefore, a part of household electrical appliances are provided, a fuse is additionally arranged on the coupler, and the fuse is connected with a conductive circuit of the upper coupler in series, so that when the flowing current is too high and generates higher temperature, the fuse can be fused, and the upper coupler is protected by power failure; however, such a coupler still has the following disadvantages: the fuse wire is directly exposed and is easy to damage or break; the fuse wire is only overheat protection when the current is too large, and the surface temperature of a measured object cannot be directly detected, such as: and the power is cut off for protection when the temperature of the bottom wall of the inner container is overheated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of above-mentioned prior art existence, and provide a detectable measured object surface temperature overheated and power protection, and the sensitive coupler of outage action improves the structure.

The purpose of the utility model is realized like this:

the utility model provides a coupler improves structure, includes pedestal and mounting panel, and the mounting panel is installed on the pedestal, be provided with the conducting circuit on the pedestal, be provided with touch switch on the conducting circuit, touch switch includes movable contact and static contact, still including overheat protection device, overheat protection device includes temperature sensing granule, push rod and leading truck, be formed with concave temperature sensing chamber on the mounting panel, the temperature sensing granule is located the temperature sensing intracavity, the leading truck sets up on the pedestal of the opening below in temperature sensing chamber, leaves the space between leading truck and the temperature sensing chamber, and push rod one end offsets with the movable contact to make movable contact and static contact offset, the push rod other end passes the leading truck and extends into the temperature sensing intracavity and offsets with the one end of temperature sensing granule, and the other end of temperature sensing granule offsets with the temperature sensing inner wall in temperature sensing chamber. This kind of coupler, through add overheat protection device on the pedestal, utilize the temperature sensing chamber on the direct and mounting panel of temperature sensing granule to offset, heat on the mounting panel can the quick transmission give the temperature sensing granule, the temperature sensing granule reaches and sets for the temperature value can warp, at this moment, the push rod has lost the holding down force of temperature sensing granule, can take place the displacement, thereby make the movable contact piece reset, with the stationary contact separation, the touch switch disconnection, realize overheat protection's effect, its whole simple structure, rationally, and, the space makes the push rod top surface unrestrained, can be more sensitive along with the temperature sensing granule deformation action, the cooperation precision requirement is low, the equipment is easy, also avoid heat in the temperature sensing chamber to transmit the pedestal through the leading truck.

The purpose of the utility model can also adopt the following technical measures to solve:

furthermore, a hollow bulge is arranged on the mounting plate, and the inner cavity of the bulge forms the temperature sensing cavity. Therefore, the temperature sensing particles can be tightly attached to the mounting plate, heat can be directly transmitted to the temperature sensing particles, and overheating protection of the temperature sensing particles is more accurate.

Furthermore, the raised top surface is higher than the top surface of the mounting plate, and the raised bottom surface is flush with the bottom surface of the mounting plate; the bellied roof of cavity is temperature sensing chamber roof promptly, and the bellied lateral wall of cavity is temperature sensing chamber lateral wall promptly, and the temperature sensing chamber roof of mounting panel is direct offsets with the heat-generating body, and the heat of heat-generating body directly transmits for the temperature sensing granule through temperature sensing chamber roof easily, and the space makes mounting panel bottom surface and leading truck separate, avoids transmitting the heat to the pedestal through the leading truck, improves the pedestal security performance.

Furthermore, a push rod hole is formed in the guide frame, the push rod is arranged in the push rod hole, and the upper end of the push rod extends into the temperature sensing cavity; the push rod hole limits the push rod to move up and down only along the push rod hole axis, the upper end of the push rod detects the action of the temperature sensing particles, the lower end of the push rod is aligned with the movable contact piece in a positioning mode, the movable contact piece can be accurately pressed down by the push rod to be abutted against the static contact piece, and the push rod action is reliable.

Furthermore, the push rod is T type, and the diameter of push rod upper end is greater than the diameter in push rod hole, and the push rod is difficult for deviating from downwards in the push rod hole.

Furthermore, a fixing groove is formed in the top surface of the push rod in a concave mode, the lower portion of the temperature sensing particles is arranged in the fixing groove, and the temperature sensing particles are fixed more stably.

Furthermore, the mounting plate is provided with a mounting hole, a temperature sensing cap is arranged in the mounting hole, the top surface of the temperature sensing cap is higher than the top surface of the mounting plate, the top surface of the brim of the temperature sensing cap abuts against the bottom surface of the mounting plate, and a concave cavity at the bottom of the temperature sensing cap forms the temperature sensing cavity; reduce the mounting panel processing degree of difficulty, also reduce the requirement to the mounting panel heat conductivity, avoid the mounting panel to give the pedestal with the heat transfer, moreover, the temperature sensing cap can select for use the good material of heat conductivity to make to reduce the manufacturing cost of mounting hole.

Further, the temperature sensing particles are hard particles which become powder, liquid or gas after the heating temperature reaches a set value.

Furthermore, the seat body is provided with a movable contact piece and a static contact piece according to the high position and the low position respectively, the movable contact piece stands upright in a static state, and the push rod presses the movable contact piece downwards so as to enable the movable contact piece to move downwards to be abutted against the static contact piece for electrifying.

Furthermore, the conductive circuit of the seat body comprises an annular metal conductive sheet, and a movable contact and a static contact of the touch switch are communicated with the annular metal conductive sheet.

The beneficial effects of the utility model are as follows.

(1) This kind of coupler, through add overheat protection device on the pedestal, utilize the temperature sensing chamber on the direct and mounting panel of temperature sensing granule to offset, heat on the mounting panel can the quick transmission give the temperature sensing granule, the temperature sensing granule reaches and sets for the temperature value can warp, at this moment, the push rod has lost the holding down force of temperature sensing granule, can take place the displacement, thereby make the movable contact piece reset, with the stationary contact separation, the touch switch disconnection, realize overheat protection's effect, its whole simple structure, rationally, and, the space makes the push rod top surface unrestrained, can be more sensitive along with the temperature sensing granule deformation action, the cooperation precision requirement is low, the equipment is easy, also avoid heat in the temperature sensing chamber to transmit the pedestal through the leading truck.

(2) Secondly, the bellied roof of cavity is temperature sensing chamber roof promptly, and the bellied lateral wall of cavity is temperature sensing chamber lateral wall promptly, and the temperature sensing chamber roof of mounting panel is direct offsets with the heat-generating body, and the heat of heat-generating body directly transmits for the temperature sensing granule through temperature sensing chamber roof easily, and overheat protection is more accurate, and the space makes mounting panel bottom surface and leading truck separate, avoids transmitting the heat to the pedestal through the leading truck, improves the pedestal security performance.

(3) And moreover, the push rod hole limits the push rod to move up and down only along the axial direction of the push rod hole, the upper end of the push rod detects the action of the temperature sensing particles, the lower end of the push rod is aligned with the movable contact piece in a positioning mode, the movable contact piece can be accurately pressed down by the push rod to be abutted against the static contact piece, the action of the push rod is reliable, the temperature sensing particles are fixed by the fixing grooves, and the temperature sensing particles are not easy to separate.

(4) In addition, the temperature sensing cap reduces the mounting panel processing degree of difficulty, also reduces the requirement to the mounting panel heat conductivity, avoids the mounting panel to give the pedestal with heat transfer, and in addition, the temperature sensing cap can select for use the good material of heat conductivity to make to reduce the manufacturing cost of mounting hole.

Drawings

Fig. 1 is a perspective view of a modified structure of a coupler according to an embodiment.

Fig. 2 is a sectional structural view of a modified structure of a coupler according to an embodiment.

Fig. 3 is an exploded structural view of a modified structure of a coupler according to an embodiment.

FIG. 4 is a perspective view of a modified structure of the second coupler according to the embodiment.

FIG. 5 is a sectional view showing a modified structure of the second coupler according to the embodiment.

Fig. 6 is an exploded structural view of a modified structure of the second coupler according to the embodiment.

Detailed Description

The invention is further illustrated by the following figures and examples.

In a first embodiment, as shown in fig. 1 to 3, an improved coupler structure includes a base 1, a mounting plate 2 and an overheat protection device 3, the mounting plate 2 is mounted on the base 1, a conductive circuit 4 is disposed on the base 1, the conductive circuit 4 includes an annular metal conductive plate 41 and a touch switch 40, the touch switch 40 includes a movable contact 42 and a static contact 43, the movable contact 42 and the static contact 43 are disposed on the base 1 at high and low positions, the static contact 43 is connected with the annular metal conductive plate 41 for conduction, the movable contact 42 is upwardly raised in a static state, and the movable contact 42 moves downwardly to abut against the static contact 43 for conduction.

The mounting panel 2 goes up the concave hollow arch 21 that is formed with, and the protruding 21 top surface is higher than mounting panel 2 top surface, and protruding 21 bottom surface flushes with mounting panel 2 bottom surface, and protruding 21 inner chamber constitutes temperature sensing cavity 20.

The overheat protection means 3 includes temperature sensing particles 31, a push rod 32 and a guide 33. The temperature sensing particles 31 are located in the temperature sensing cavity 20, and the top surfaces of the temperature sensing particles 31 are abutted against the top of the temperature sensing cavity 20. The guide frame 33 is fixed on the seat body 1, the guide frame 33 and the seat body 1 form a mouth-shaped channel 10, the movable contact piece 42 is arranged in the mouth-shaped channel 10, the guide frame 33 is provided with a push rod hole 34, the push rod 32 is arranged in the push rod hole 34, the lower end of the push rod 32 extends into the mouth-shaped channel 10 to abut against the movable contact piece 42, the upper end of the push rod 32 extends into the temperature sensing cavity 20 to abut against the bottom surface of the temperature sensing particle 31, and the temperature sensing particle 31 presses the push rod 32 to abut against the movable contact piece 42 and the static contact piece 43 for electrifying. A gap 5 is left between the guide frame 33 and the temperature sensing cavity 20, namely the gap 5 is left between the guide frame 33 and the mounting plate 2, and the gap 5 enables the bottom opening of the temperature sensing cavity 20 to be open.

In this embodiment, the push rod 32 is T-shaped, the diameter of the upper end of the push rod 32 is larger than the diameter of the push rod hole 34, the fixing groove 35 is recessed in the top surface of the push rod 32, and the lower portion of the temperature sensing particle 31 is disposed in the fixing groove 35. The temperature sensing particles 31 are hard particles which become powder, liquid or gas after the heating temperature reaches a set value; the hard particles can be solid particle quartz sand which can be changed into powder after being heated to a certain degree; of course, the hard particles may be ordinary plastic pellets, which are partially melted and deformed after being heated to some extent.

The seat body 1 is provided with a first supporting part 11 and a second supporting part 12, one end of the guide frame 33 is fixed with the top of the first supporting part 11 in a concave-convex insertion manner, the other end of the guide frame 33 is abutted against the top surface of the second supporting part 12, the mouth-shaped channel 10 is formed among the seat body 1, the guide frame 33, the first supporting part 11 and the second supporting part 12, the movable contact 42 penetrates through the mouth-shaped channel 10, the push rod hole 34 is positioned above the movable contact 42, preferably, the top of the second supporting part 12 is provided with a slot 13, and one end of the guide frame 33 is arranged in the slot 13. The guide frame 33 is a diamond block-shaped or strip-shaped part made of heat insulation material and having two symmetrical ends, through holes 36 are formed in the two ends of the guide frame 33, the first supporting portion 11 is provided with the positioning column 14, the through hole 36 in one end of the guide frame 33 is fixedly connected with the positioning column 14 in an inserting mode, and the preferable guide frame 33 is made of plastic.

In this embodiment, the mounting plate 2, the hollow protrusion 21 and the temperature sensing cavity 20 are integrally formed, and the seat body 1, the first supporting portion 11 and the second supporting portion 12 are integrally formed, that is, the mounting plate 2 and the seat body 1 are respectively formed, so that the manufacturing is easy.

The working principle is as follows: using electric kettle as an example, the utility model relates to an upper coupler, its pedestal 1 is fixed respectively on kettle body and kettle seat with lower coupler, and the kettle body is sat on the kettle seat, and pedestal 1 and lower coupler circular telegram cooperation of pegging graft each other because the dish that generates heat of kettle body offsets with mounting panel 2, promptly offsets with the protruding 21 top surface of cavity on the mounting panel 2, and the heat of dish that will generate heat is given for temperature sensing granule 31 fast to mounting panel 2, reaches the setting value when temperature sensing granule 31's temperature, promptly: when the temperature of the heating plate is too hot, the temperature sensing particles 31 are heated and deformed, and if the temperature sensing particles 31 become powder, the push rod 32 loses the downward pressure of the temperature sensing particles 31 and can be displaced, so that the movable contact 42 is reset and separated from the static contact 43, the touch switch 40 is switched off, and the overheat protection effect of the electric kettle is realized.

The second embodiment, as shown in fig. 4-6, is different from the first embodiment in that: the push rod 32 is cylindrical, and the diameter of the push rod 32 is smaller than that of the temperature sensing particles 31. The mounting plate 2 is provided with a mounting hole 22, a temperature sensing cap 23 is arranged in the mounting hole 22, namely the temperature sensing cap 23 forms a bulge 21, the top surface of the temperature sensing cap 23 is higher than the top surface of the mounting plate 2, the top surface of the brim of the temperature sensing cap 23 is abutted against the bottom surface of the mounting plate 2, and a concave cavity at the bottom of the temperature sensing cap 23 forms the temperature sensing cavity 20. The mounting plate 2 and the temperature sensing cap 23 are manufactured and assembled together respectively, therefore, the mounting plate 2 is made of heat-conducting materials with poor heat conductivity or even heat-insulating materials, heat on the heating plate can not be transmitted to the base body 1 through the mounting plate 2, the temperature sensing cap 23 is made of materials with excellent heat conductivity, and the temperature sensing particles 31 can measure temperature more accurately through the temperature sensing cap 23.

Claims

1. An improved coupler structure comprises a base body (1) and a mounting plate (2), wherein the mounting plate (2) is mounted on the base body (1), a conductive circuit (4) is arranged on the base body (1), a touch switch (40) is arranged on the conductive circuit (4), the touch switch (40) comprises a movable contact piece (42) and a static contact piece (43), the improved coupler structure is characterized by further comprising an overheating protection device (3), the overheating protection device (3) comprises temperature sensing particles (31), a push rod (32) and a guide frame (33), a concave temperature sensing cavity (20) is formed on the mounting plate (2), the temperature sensing particles (31) are located in the temperature sensing cavity (20), the guide frame (33) is arranged on the base body (1) below an opening of the temperature sensing cavity (20), a gap (5) is reserved between the guide frame (33) and the temperature sensing cavity (20), one end of the push rod (32) is abutted against the movable contact piece (42), so that the movable contact piece (42) is abutted against the static contact piece (43), the other end of the push rod (32) penetrates through the guide frame (33) and extends into the temperature sensing cavity (20) to be abutted against one end of the temperature sensing particles (31), and the other end of the temperature sensing particles (31) is abutted against the temperature sensing inner wall of the temperature sensing cavity (20).

2. The improved coupler structure as claimed in claim 1, wherein a hollow bulge (21) is arranged on the mounting plate (2), and the inner cavity of the bulge (21) forms the temperature sensing cavity (20).

3. The improved coupler structure of claim 2, wherein the top surface of the protrusion (21) is higher than the top surface of the mounting plate (2), and the bottom surface of the protrusion (21) is flush with the bottom surface of the mounting plate (2).

4. The improved structure of the coupler as claimed in claim 1, wherein the guide frame (33) is provided with a push rod hole (34), the push rod (32) is disposed in the push rod hole (34), and the upper end of the push rod (32) extends into the temperature sensing cavity (20).

5. The improved coupler structure as claimed in claim 4, wherein the push rod (32) is T-shaped, and the diameter of the upper end of the push rod (32) is larger than that of the push rod hole (34).

6. The improved structure of the coupler as claimed in claim 5, wherein the top surface of the push rod (32) is recessed with a fixing groove (35), and the lower part of the temperature sensing particle (31) is placed in the fixing groove (35).

7. The improved coupler structure of claim 1, wherein the mounting plate (2) is provided with a mounting hole (22), a temperature sensing cap (23) is arranged in the mounting hole (22), the top surface of the temperature sensing cap (23) is higher than the top surface of the mounting plate (2), the top surface of the brim of the temperature sensing cap (23) abuts against the bottom surface of the mounting plate (2), and a concave cavity at the bottom of the temperature sensing cap (23) forms the temperature sensing cavity (20).

8. The improved coupler structure as claimed in claim 1, wherein the temperature sensing particles (31) are hard particles which become powder, liquid or gas after the heating temperature reaches a set value.

9. An improved structure of coupler according to claim 1, characterized in that said base (1) is provided with a movable contact piece (42) and a static contact piece (43) at high and low positions, respectively, said movable contact piece (42) stands upright in a static state, said push rod (32) presses down the movable contact piece (42) to move the movable contact piece (42) downward to contact with the static contact piece (43) for conducting electricity.

10. The improved structure of the coupler of claim 1, wherein the conductive circuit (4) of the base (1) comprises a circular conductive metal sheet (41), and the movable contact (42) and the static contact (43) of the touch switch (40) are communicated with the circular conductive metal sheet (41).