CN210743871U - Coupler improved structure with overheat protection function - Google Patents
Coupler improved structure with overheat protection function Download PDFInfo
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- CN210743871U CN210743871U CN201921946813.4U CN201921946813U CN210743871U CN 210743871 U CN210743871 U CN 210743871U CN 201921946813 U CN201921946813 U CN 201921946813U CN 210743871 U CN210743871 U CN 210743871U
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- temperature sensing
- overheat protection
- movable contact
- push rod
- protection function
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Abstract
Take overheat protection function's coupler to improve structure, comprising a base, the conducting strip, conducting circuit and overheat protection device, be equipped with touch switch on the conducting circuit, touch switch includes movable contact and static contact, overheat protection device, the conducting strip, conducting circuit fixes on the base, overheat protection device includes the temperature sensing granule, push rod and leading truck, be formed with concave temperature sensing chamber on the conducting strip, the temperature sensing granule is located the temperature sensing intracavity, the sealed temperature sensing chamber of leading truck, push rod one end offsets with the movable contact and makes movable contact and static contact offset, the other end passes the leading truck and extends into the temperature sensing intracavity and offsets with the one end of temperature sensing granule, the other end of temperature sensing granule offsets with the temperature sensing inner wall in temperature sensing chamber. This kind of coupler, heat on the conducting strip can transmit for the temperature sensing granule, and the temperature sensing granule reaches the settlement temperature value and can warp, and at this moment, the push rod has lost the holding down force of temperature sensing granule, can take place the displacement to make the movable contact reset, with the separation of static contact, the touch switch disconnection realizes overheat protection's effect.
Description
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 simple structure, reasonable, difficult impaired or fracture, detectable measured object surface temperature is overheated and the coupler of outage protection improves the structure.
The purpose of the utility model is realized like this.
The improved coupler structure with the overheat protection function comprises a seat body and a heat conducting sheet, wherein the heat conducting sheet is installed on the seat body, a conductive circuit is arranged on the seat body, a touch switch is arranged on the conductive circuit and comprises a movable contact sheet and a static contact sheet, and the improved coupler structure is characterized by further comprising an overheat protection device, the overheat protection device is fixed on the seat body and comprises temperature sensing particles, a push rod and a guide frame, a concave temperature sensing cavity is formed in the heat conducting sheet, the temperature sensing particles are located in the temperature sensing cavity, the guide frame is arranged at an opening of the temperature sensing cavity, one end of the push rod abuts against the movable contact sheet so as to enable the static contact sheet to abut against the static contact sheet, the other end of the push rod penetrates through the guide frame and extends into the temperature sensing cavity to abut against one end of the temperature sensing particles, and the other end of the temperature. This kind of coupler, through add overheat protection device on the pedestal, utilize the temperature sensing chamber on the temperature sensing granule is direct and the conducting strip to offset, heat on the conducting strip can the quick transmission give the temperature sensing granule, the temperature sensing granule reaches the settlement temperature value and can warp, at this moment, the push rod has lost the overdraft of temperature sensing granule, can take place the displacement, thereby make the movable contact piece reset, with the static contact piece separation, the touch switch disconnection, realize overheat protection's effect, its whole simple structure, rationally, moreover, the temperature sensing granule is hidden at the temperature sensing intracavity and sealed through the leading truck, avoid directly exposing, it is not fragile or cracked.
The purpose of the utility model can also adopt the following technical measures to solve:
furthermore, a hollow bulge is arranged on the heat conducting sheet, a bulge inner cavity forms the temperature sensing cavity, and the guide frame is fixed at the bottom opening of the bulge inner cavity. Like this, the temperature sensing granule both can be because of hugging closely the conducting strip, be favorable to heat direct transfer to temperature sensing granule, make its overheat protection more accurate, and the temperature sensing chamber passes through the leading truck sealed simultaneously, ensures that the difficult escape of temperature sensing chamber heat, and the heat can be concentrated and transmit for the temperature sensing granule, and the temperature sensing granule temperature measurement is more accurate.
Furthermore, concave ring grooves are formed on the peripheries of the hollow bulges of the heat-conducting fins, the top walls of the hollow bulges are higher than the top walls of the peripheries of the concave ring grooves, and the bottom walls of the concave ring grooves are lower than the bottom walls of the heat-conducting fins; the bellied roof of cavity is temperature sensing chamber roof promptly, the bellied lateral wall of cavity is temperature sensing chamber lateral wall promptly, the temperature sensing chamber roof of conducting strip is direct offsets with the heat-generating body, the heat of heat-generating body is direct to transmit for the temperature sensing granule through temperature sensing chamber roof easily, recessed annular makes temperature sensing chamber roof periphery and one section distance in heat-generating body interval, make the heat of heat-generating body only can be through temperature sensing chamber roof, temperature sensing chamber lateral wall just transmits for the leading truck, temperature sensing chamber roof, temperature sensing chamber lateral wall more is close to the temperature sensing granule, the heat that makes the heat-generating body like this concentrates the transmission for the temperature sensing granule, reduce the heat of transmitting for the pedestal by the leading truck, the temperature.
Furthermore, a push rod hole is formed in the guide frame, and the lower end of the push rod penetrates through the push rod hole and 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 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 is reliable in action.
Further, the device also comprises a sealing element, wherein the sealing element is arranged between the guide frame and the periphery of the opening of the temperature sensing cavity; the sealing piece enhances the tightness between the guide frame and the temperature sensing cavity, heat is not easy to escape from the temperature sensing cavity, the temperature measurement of temperature sensing particles is more accurate, and the overheat protection triggering is more sensitive.
Further, the sealing element is a sealing ring; the sealing ring is easy to obtain and low in cost.
Further, the temperature sensing particles are hard particles which become powder, liquid or gas after the heating temperature reaches a set value.
Furthermore, a sealing ring groove is formed in the periphery of the opening of the guide frame and/or the temperature sensing cavity, the sealing ring is arranged on the sealing ring groove, and the sealing ring is positioned and fixed by the sealing ring groove and is not easy to separate.
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.
This kind of coupler, through add overheat protection device on the pedestal, utilize the temperature sensing chamber on the temperature sensing granule is direct and the conducting strip to offset, heat on the conducting strip can the quick transmission give the temperature sensing granule, the temperature sensing granule reaches the settlement temperature value and can warp, at this moment, the push rod has lost the overdraft of temperature sensing granule, can take place the displacement, thereby make the movable contact piece reset, with the static contact piece separation, the touch switch disconnection, realize overheat protection's effect, its whole simple structure, rationally, moreover, the temperature sensing granule is hidden at the temperature sensing intracavity and sealed through the leading truck, avoid directly exposing, it is not fragile or cracked.
Secondly, the temperature sensing particles can be attached to the heat conducting sheet, heat can be directly transmitted to the temperature sensing particles, overheating protection of the temperature sensing particles is more accurate, meanwhile, the temperature sensing cavity is sealed through the guide frame, the fact that the heat in the temperature sensing cavity is not easy to escape is guaranteed, the heat can be transmitted to the temperature sensing particles in a centralized mode, and temperature measurement of the temperature sensing particles is more accurate.
Furthermore, the bellied roof of cavity is temperature sensing chamber roof promptly, the bellied lateral wall of cavity is temperature sensing chamber lateral wall promptly, the temperature sensing chamber roof of heat-conducting strip is direct offsets with the heat-generating body, the heat of heat-generating body is direct to transmit for the temperature sensing granule through temperature sensing chamber roof easily, recessed annular is one section distance in temperature sensing chamber roof periphery and heat-generating body interval, make the heat of heat-generating body only can be through temperature sensing chamber roof, temperature sensing chamber lateral wall just transmits for the leading truck, temperature sensing chamber roof, temperature sensing chamber lateral wall more is close to the temperature sensing granule, the heat that makes the heat-generating body concentrate the transmission for the temperature sensing granule like this, reduce the heat of transmitting for the pedestal by the leading truck, both make the temperature.
In addition, the sealing element enhances the tightness between the guide frame and the temperature sensing cavity, heat is not easy to escape from the temperature sensing cavity, the temperature measurement of temperature sensing particles is more accurate, and the triggering of overheat protection is more sensitive.
The sealing element is a sealing ring, the sealing ring is easy to obtain and low in cost, and the sealing ring is positioned and fixed by a sealing ring groove and is not easy to separate.
Drawings
Fig. 1 is a perspective view of a modified structure of a coupler with an overheat protection function according to an embodiment.
Fig. 2 is an exploded structural view of a modified structure of a coupler with an overheat protection function according to an embodiment.
Fig. 3 is a sectional structural view of a modified structure of the coupler with overheat protection function according to the embodiment.
Fig. 4 is another sectional structural view of a modified structure of the coupler with overheat protection function according to the embodiment.
Fig. 5 is an exploded structural view of a modified structure of a coupler with an overheat protection function according to a second embodiment.
Fig. 6 is a sectional structural view of a modified structure of a coupler with an overheat protection function according to a second embodiment.
Detailed Description
The invention is further illustrated by the following figures and examples.
In the first embodiment, as shown in fig. 1 to 4, an improved structure of a coupler with an overheat protection function includes a base 1 and a heat conducting strip 2, the heat conducting strip 2 is mounted on the base 1, a conducting circuit 3 is disposed on the base 1, a touch switch 4 is disposed on the conducting circuit 3, the touch switch 4 includes a movable contact 41 and a static contact 42, and is characterized by further including an overheat protection device 5, the overheat protection device 5 is fixed on the base 1, the overheat protection device 5 includes temperature sensing particles 51, a push rod 52 and a guide frame 53, a concave temperature sensing cavity 20 is formed on the heat conducting strip 2, the temperature sensing particles 51 are located in the temperature sensing cavity 20, the guide frame 53 is disposed in an opening of the temperature sensing cavity 20, one end of the push rod 52 abuts against the movable contact 41 to make the static contact 42 abut against the movable contact, the other end of the push rod 52 penetrates through the guide frame 53 and extends into the temperature sensing cavity 20 to abut against one end of the temperature sensing particles 51, the other end of the temperature sensing particle 51 abuts against the temperature sensing inner wall of the temperature sensing chamber 20.
Referring to fig. 2 to 4, a hollow protrusion 21 is disposed on the heat conducting strip 2, an inner cavity of the protrusion 21 forms the temperature sensing cavity 20, a concave ring groove 22 is formed around the hollow protrusion 21 of the heat conducting strip 2, a top wall of the hollow protrusion 21 is higher than a top wall of the periphery of the concave ring groove 22, and the guide frame 53 is fixed at a bottom opening of the inner cavity of the protrusion 21, that is, the guide frame 53 abuts against a bottom wall of the concave ring groove 22. The guide frame 53 is provided with a push rod hole 54, the upper end or the position close to the upper end of the push rod 52 is provided with an annular convex edge 521, the diameter of the annular convex edge 521 is larger than that of the push rod hole 54, and the lower end of the push rod 52 penetrates through the push rod hole 54 and extends into the temperature sensing cavity 20.
The seat body 1 is provided with a first supporting part 11 and a second supporting part 12, one end of a guide frame 53 is fixed with the top of the first supporting part 11 in a concave-convex insertion manner, the other end of the guide frame 53 is abutted against the top surface of the second supporting part 12, a mouth-shaped channel 10 is formed among the seat body 1, the guide frame 53, the first supporting part 11 and the second supporting part 12, the movable contact spring 41 penetrates through the mouth-shaped channel 10, the push rod hole 54 is positioned above the movable contact spring 41, preferably, the top of the second supporting part 12 is provided with a slot 13, and one end of the guide frame 53 is arranged in the slot 13. The guide frame 53 is a diamond-shaped block-shaped or strip-shaped part made of heat insulation materials, the two ends of the guide frame 53 are symmetrical, through holes are formed in the two ends of the guide frame 53, positioning columns are arranged on the first supporting portion 11, the through holes in one end of the guide frame 53 are fixedly connected with the positioning columns in an inserting mode, and the preferred guide frame 53 is made of plastics.
In this embodiment, the heat conducting sheet 2, the hollow protrusion 21, the concave ring groove 22, 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 heat conducting sheet 2 and the seat body 1 are respectively formed, so that the manufacturing is easy.
The temperature sensing particles 51 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.
More specifically, the base 1 is provided with a movable contact piece 41 and a fixed contact piece 42 at high and low positions, respectively, the movable contact piece 41 is vertically raised in a static state, and the push rod 52 pushes down the movable contact piece 41 to move the movable contact piece 41 downward to abut against the fixed contact piece 42 for conduction. The conductive circuit 3 of the base 1 includes an annular metal conductive plate 30, and the static contact 42 of the touch switch 4 is electrically connected to the annular metal conductive plate 30.
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 kettle body generate heat set with conducting strip 2 counterbalance, promptly with the protruding 21 roof of cavity on the conducting strip 2 counterbalance, the temperature sensing spare will generate heat the heat of dish and transmit for temperature sensing granule 51 fast, reaches the setting value when temperature sensing granule 51's temperature, promptly: when the temperature of the heating plate is too hot, the temperature sensing particles 51 are heated and deformed, and if the temperature sensing particles 51 become powder, the push rod 52 loses the downward pressure of the temperature sensing particles 51 and can be displaced, so that the movable contact piece 41 is reset and separated from the static contact piece 42, the touch switch 4 is switched off, and the overheat protection effect of the electric kettle is realized.
The second embodiment, as shown in fig. 5 and fig. 6, is different from the first embodiment in that: the top of the guide frame 53 and the periphery of the opening of the temperature sensing cavity 20 (the bottom wall of the lower concave ring groove 22) are provided with a sealing ring groove 50, and a sealing element is arranged in the sealing ring groove 50 and is a sealing ring 6. Thus, the guide frame 53 and the temperature sensing cavity 20 are sealed by the sealing ring 6, so that the heat in the temperature sensing cavity 20 is not easy to escape, and the temperature sensing of the temperature sensing particles 51 is more accurate.
Claims (10)
1. The improved coupler structure with the overheat protection function comprises a base body (1) and a heat conducting sheet (2), wherein the heat conducting sheet (2) is installed on the base body (1), a conducting circuit (3) is arranged on the base body (1), a touch switch (4) is arranged on the conducting circuit (3), the touch switch (4) comprises a movable contact sheet (41) and a static contact sheet (42), and the improved coupler structure is characterized by further comprising an overheat protection device (5), the overheat protection device (5) is fixed on the base body (1), the overheat protection device (5) comprises temperature sensing particles (51), a push rod (52) and a guide frame (53), a concave temperature sensing cavity (20) is formed on the heat conducting sheet (2), the temperature sensing particles (51) are located in the temperature sensing cavity (20), the guide frame (53) is arranged at an opening of the temperature sensing cavity (20), and one end of the push rod (52) is abutted against the movable contact sheet (41), so that the movable contact piece (41) is abutted against the static contact piece (42), the other end of the push rod (52) penetrates through the guide frame (53) and extends into the temperature sensing cavity (20) to be abutted against one end of the temperature sensing particles (51), and the other end of the temperature sensing particles (51) is abutted against the temperature sensing inner wall of the temperature sensing cavity (20).
2. The improved coupler structure with the overheat protection function according to claim 1, wherein the heat conducting fin (2) is provided with a hollow protrusion (21), the inner cavity of the protrusion (21) forms the temperature sensing cavity (20), and the guide frame (53) is fixed at the bottom opening of the inner cavity of the protrusion (21).
3. The improved coupler structure with the overheat protection function according to claim 1, wherein a concave ring groove (22) is formed around the hollow protrusion (21) of the heat conducting strip (2), the top wall of the hollow protrusion (21) is higher than the top wall of the periphery of the concave ring groove (22), and the bottom wall of the concave ring groove (22) is lower than the bottom wall of the heat conducting strip (2).
4. The improved coupler structure with the overheat protection function according to claim 2, wherein the guide frame (53) is provided with a push rod hole (54), and the lower end of the push rod (52) passes through the push rod hole (54) and extends into the temperature sensing cavity (20).
5. The improved structure of the coupler with the overheat protection function according to any one of claims 1 to 4, further comprising a sealing member, wherein the sealing member is disposed between the guide frame (53) and the periphery of the opening of the temperature sensing chamber (20).
6. The improved coupler structure with the overheat protection function according to claim 5, wherein the sealing member is a sealing ring (6).
7. The improved coupler structure with the overheat protection function according to claim 6, wherein a sealing ring groove (50) is provided on the periphery of the opening of the guide frame (53) and/or the temperature-sensing cavity (20), and the sealing ring (6) is seated on the sealing ring groove (50).
8. The improved coupler structure with the overheat protection function according to claim 1, wherein the temperature sensing particles (51) are hard particles which become powder, liquid or gas after the heated temperature reaches a set value.
9. The improved structure of the coupler with the overheat protection function according to claim 1, wherein the seat body (1) is provided with a movable contact piece (41) and a static contact piece (42) at high and low positions, respectively, the movable contact piece (41) stands upright in a static state, and the push rod (52) presses the movable contact piece (41) downward to move the movable contact piece (41) downward to abut against the static contact piece (42) for conducting electricity.
10. The improved structure of the coupler with the overheat protection function according to claim 1, wherein the conductive circuit (3) of the base (1) comprises an annular metal conductive sheet (30), and the movable contact (41) and the static contact (42) of the touch switch (4) are communicated with the annular metal conductive sheet (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921946813.4U CN210743871U (en) | 2019-11-12 | 2019-11-12 | Coupler improved structure with overheat protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921946813.4U CN210743871U (en) | 2019-11-12 | 2019-11-12 | Coupler improved structure with overheat protection function |
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| Publication Number | Publication Date |
|---|---|
| CN210743871U true CN210743871U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921946813.4U Active CN210743871U (en) | 2019-11-12 | 2019-11-12 | Coupler improved structure with overheat protection function |
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| CN (1) | CN210743871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993770A (en) * | 2020-08-14 | 2020-11-27 | 温州细芙贸易有限公司 | Garment production is with pressing device with overheat protection |
-
2019
- 2019-11-12 CN CN201921946813.4U patent/CN210743871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111993770A (en) * | 2020-08-14 | 2020-11-27 | 温州细芙贸易有限公司 | Garment production is with pressing device with overheat protection |
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