CN212323376U - Four-core connector and electric heating appliance - Google Patents

Abstract

The utility model discloses a four-core connector and an electric heating appliance, wherein the four-core connector comprises an upper coupler and a lower coupler, the upper coupler can be coupled with the lower coupler, and a center ring, a first conducting ring, a second conducting ring and a third conducting ring are sequentially arranged on the upper coupler from inside to outside in the radial direction; the center ring and the first conducting ring are a first conducting group, the second conducting ring and the third conducting ring are a second conducting group, one of the first conducting group and the second conducting group is used for being connected with strong current, and the other of the first conducting group and the second conducting group is used for being connected with weak current; the distance between the first conductive ring and the second conductive ring is greater than or equal to 8 mm. The four-core connector can meet the requirement of strengthening insulation in equipment with a metal shell, can be used for detecting water temperature or water level, and avoids potential safety hazards. In addition, the existing connector with the water temperature or water level detection function can be realized only by 5 cores, and the same function can be realized by 4 cores, so that the cost is reduced.

Description

Four-core connector and electric heating appliance

Technical Field

The utility model belongs to the technical field of domestic appliance, concretely relates to four-core connector and electric heater utensil.

Background

With the development of science and technology, more and more electric heating appliances appear, which provides great convenience for the life of users. Among these, the coupler is an important component of an electric heating appliance. The most common coupler in existing electrical heating appliances is the three-ring coupler. And three conducting rings in the three-ring coupler are respectively a ground wire for connecting the shell to ground, a live wire and a zero wire for heating. The common electric kettle utilizes the coupler to be matched with a steam switch or a kick temperature controller for use, and when the water temperature reaches a boiling state, the steam switch or the kick temperature controller can be disconnected.

Currently, only 5-ring or 6-ring couplers can be used if a temperature detection or water level detection circuit is added to the electric heating appliance. Due to the limited space of the existing 5-ring or 6-ring coupler, the distance between the conducting rings can only meet the basic insulation requirement mostly. However, in certain special applications, such as temperature or water level sensing circuits, enhanced insulation requirements must be met. The common 5-ring or 6-ring coupler sold in the market can not meet the requirement of reinforcing insulation, so that the safety requirement can not be met in equipment with temperature or water level detection, and potential safety hazards are easily caused. And the difference between the commercially available 5-ring or 6-ring coupler which can meet the requirement of reinforced insulation and the common product is large, the price cost is high, and the universality is poor.

Accordingly, there is a need to develop a new connector, and an electrical heating appliance employing the new connector, that overcomes and ameliorates one or more of the above-mentioned disadvantages of the prior art, or at least provides an effective alternative.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

To foretell not enough, the utility model provides a four-core connector and electrical heating utensil, the four-core connector of this application can satisfy the function of strengthening the insulation to can be used for testing temperature and water level.

The utility model discloses a realize through following technical scheme:

an aspect of the embodiment of the present invention provides a four-core connector, including upper coupler and lower coupler, the upper coupler can be coupled with the lower coupler. The upper coupler is sequentially provided with a center ring, a first conducting ring, a second conducting ring and a third conducting ring from inside to outside in the radial direction; the center ring and the first conducting ring are a first conducting group, the second conducting ring and the third conducting ring are a second conducting group, one of the first conducting group and the second conducting group is used for being connected with strong current, and the other of the first conducting group and the second conducting group is used for being connected with weak current; the distance between the first conductive ring and the second conductive ring is greater than or equal to 8 mm.

In a preferred implementation of the four-core connector, the distance between the center ring and the first conductive ring, and the distance between the second conductive ring and the third conductive ring are respectively greater than or equal to 3.2 mm.

In a preferred implementation of the four-core connector, the lower coupler includes a center ring conductive contact, a first conductive contact, a second conductive contact, and a third conductive contact; the center ring conductive contact, the first conductive contact, the second conductive contact and the third conductive contact can be electrically connected with the center ring, the first conductive ring, the second conductive ring and the third conductive ring respectively; a distance between at least one of the center ring conductive contact, the first conductive contact, the second conductive contact, and the third conductive contact and a top of the lower coupler is greater than or equal to 8 mm.

In a preferred implementation of the four-core connector, the upper coupler further includes four posts connected to the center ring conductive contact, the first conductive contact, the second conductive contact, and the third conductive contact, respectively.

Further, the four-core connector, the upper coupler, and the housing are made of plastic, and a distance between the housing and the third conductive ring is greater than or equal to 3.2 mm.

The embodiment of the utility model also provides an electric heating appliance on the other hand, including the appliance body and base, wherein, still include any one above-mentioned four-core connector; the upper coupler is arranged on the appliance body, and the lower coupler is arranged on the base.

In a preferred implementation of the electric heating appliance, the electric heating appliance further comprises a control board, the lower coupler being connected with the control board; the control panel is provided with an isolation power supply device and a controller, the input end of the isolation power supply device is connected with the live wire and the zero line, the output end of the isolation power supply device is connected with the ground wire and the controller, and the isolation power supply device is used for isolating the strong current and the weak current on the control panel.

In a preferred implementation manner of the electric heating appliance, the appliance body is further provided with a heating device, when the upper coupler is coupled with the lower coupler, one end of one of the first conductive set and the second conductive set is connected with the heating device, the other end of the first conductive set and the second conductive set is connected with the live wire and the zero wire, and the other end of the first conductive set and the second conductive set is connected with the controller and the ground wire.

In the electric heating appliance exemplified by the embodiment of the application, when the first conductive set is connected with the heating device, the second conductive set is connected with the controller; or when the second conductive group is connected with the heating device, the first conductive group is connected with the controller.

In a preferred implementation of the electric heating appliance, the appliance body is further provided with a detection device, and the other of the first conductive set and the second conductive set is connected with the detection device; when the upper coupler is coupled with the lower coupler, the detection device is connected with the controller and the ground wire.

Further, the electric heating appliance of any one of the above, wherein the isolation power supply device is an isolation switch power supply or an isolation transformer; and/or the control panel is also provided with a control switch, one end of the control switch is connected with the live wire, the other end of the control switch is electrically connected with the lower coupler, and the control end is connected with the controller.

Through the embodiment of the utility model provides a technical scheme can reach following beneficial effect:

1. the application of the four-core connector, the distance between the first conducting ring and the second conducting ring is set to be larger than or equal to 8mm, the reinforced insulation requirement in safety regulations can be met, the applicability and the safety of the coupler are improved, and compared with the existing 5-ring or 6-ring coupler, the four-core connector is low in cost and high in safety.

2. According to the four-core connector, the distances between the center ring and the first conducting ring and between the center ring and the second conducting ring and between the center ring and the third conducting ring are set to be larger than or equal to 3.2mm respectively, and the distances between the center ring and the first conducting ring and between the center ring and the third conducting ring can meet basic insulation requirements respectively.

3. The lower coupler belongs to a part which is easy to touch by a human body, and the distance between at least one of the center ring conductive contact, the first conductive contact, the second conductive contact and the third conductive contact and the top of the lower coupler is set to be more than or equal to 8mm, so that the contact of the lower coupler can meet the creepage distance requirement, and the safety of the four-core connector is ensured.

4. The four-core connector of the application sets the shell as a plastic part, and has better safety when being applied to equipment with temperature or water level detection. And the distance between the shell and the third conducting ring is set to be greater than or equal to 3.2mm, so that the basic insulation requirement can be met, and the safety of the four-core connector is further improved.

5. The electric heating appliance comprises the four-core connector in any implementation mode, so that the strong current ring and the weak current ring can meet the requirement of strengthening insulation, the safety of the electric heating appliance is improved, and the cost is reduced.

6. The electric heating appliance is provided with the isolation power supply device on the control panel, so that the control panel can also meet the reinforced insulation requirement in safety regulations, and the appliance body can be in direct contact with water to carry out water level detection or temperature detection due to the design of the isolation power supply device, thereby avoiding the electric shock danger of a user.

7. In the electric heating appliance, the four-core connector can meet the requirement of strengthening insulation, so that the ground wire input by the AC power supply can be shared with the ground wire of the isolated power supply device, and the cost of the electric heating appliance is reduced.

Drawings

Fig. 1 is a schematic diagram of a structure of an upper coupler in a four-core connector according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a lower coupler in a four-core connector according to an embodiment of the present invention;

fig. 3 shows a perspective cross-sectional view of an upper coupler in a four-core connector according to an embodiment of the present invention;

fig. 4 is a perspective cross-sectional view of the lower coupler of the four-core connector according to the embodiment of the present invention;

fig. 5 is an electrical block diagram of an electrical heating appliance according to an embodiment of the present invention.

Reference numerals:

10-an upper coupler; 20-a lower coupler; 30-an appliance body; 40-a control panel;

11-a central ring; 12-a first conductive ring; 13-a second conductive ring; 14-a third conductive ring; 15-a terminal post; 16-a housing;

21-center ring conductive contact; 22-lower coupler post; 23-a lower coupler housing;

31-a detection device; 32-a heating device;

41-isolated power supply; 42-a controller; 43-control the switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to the normal use state of the product, i.e. the traveling direction of the product, and should not be considered as limiting.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example one

First, the technical concept of the present invention will be explained. Due to the limited space of the existing 5-ring or 6-ring coupler, the distance between the conducting rings can only meet the basic insulation requirement mostly. If the coupler is applied to equipment with temperature detection or water level detection, the safety requirement of reinforced insulation cannot be met, and potential safety hazards exist. And the 5-ring or 6-ring coupler meeting the requirement of strengthening insulation has high price and cost and poor universality.

In view of the above problems with the prior art couplers, the present invention provides a four-core connector and an electric heating device.

The specific scheme is as follows:

the embodiment provides a four-core connector, which comprises an upper coupler 10 and a lower coupler 20, wherein the upper coupler 10 can be coupled with the lower coupler 20. As shown in fig. 1, the upper coupler 10 is provided with a center ring 11, a first conductive ring 12, a second conductive ring 13, and a third conductive ring 14 in sequence from inside to outside in a radial direction. The center ring 11 and the first conductive ring 12 are shown as a first conductive group, and the second conductive ring 13 and the third conductive ring 14 are shown as a second conductive group. When wiring, the first conductive group can be selected for the weak current ring, and the second conductive group can be used as the strong current ring. The reverse is also true, namely, the first conductive set is used for the strong current loop, and the second conductive set is used for the weak current loop. Among them, strong electricity is generally understood as electricity in an electric power system, for example, 220V ac is generally used. Weak current is the current and voltage required to deliver a signal. As shown in fig. 3, the distance L2 between the first conductive ring 12 and the second conductive ring 13 is greater than or equal to 8mm, which ensures that the distance between the first conductive ring 12 and the second conductive ring 13 in the upper coupler 10 satisfies the requirement of enhanced insulation in safety regulations.

The existing 5-ring or 6-ring coupler can usually meet basic insulation requirements, but when the coupler is applied to special detection, such as water level detection, the requirement for strengthening insulation is difficult to meet, and potential safety hazards are easily caused. The center ring 11 and the first conductive ring 12 of the upper coupler 10 in the four-core connector of this embodiment may be used as a first conductive group, and the second conductive ring 13 and the third conductive ring 14 may be used as a second conductive group, which are respectively used for a strong current ring and a weak current ring, and as long as the distance between the first conductive ring 12 and the second conductive ring 13 is greater than or equal to 8mm, it can be ensured that the strong current ring and the weak current ring meet the requirement of enhanced insulation. The four-core connector of the embodiment has wider applicability, higher safety and lower cost than the existing 5-ring coupler.

As shown in fig. 2 and 3, a distance L1 between the center ring 11 and the first conductive ring 12 of the upper coupler 10 in the four-core connector is set to be greater than or equal to 3.2mm, and a distance L3 between the second conductive ring 13 and the third conductive ring 14 is also set to be greater than or equal to 3.2 mm. This arrangement allows the distances between the other conductive rings in the upper coupler 10 to meet the basic insulation requirements, respectively.

The lower coupler 20 of the quad connector includes a center ring conductive contact 21, a first conductive contact (not shown), a second conductive contact (not shown), and a third conductive contact (not shown). The center ring conductive contact 21, the first conductive contact, the second conductive contact, and the third conductive contact can be electrically connected with the center ring 11, the first conductive ring 12, the second conductive ring 13, and the third conductive ring 14, respectively, when the lower coupler 20 is coupled to the upper coupler 10. As shown in fig. 4, the distance H between the center ring conductive contact 21 of the lower coupler 20 and the top of the lower coupler housing 23 is set to be greater than or equal to 8 mm. A lower coupler post 22 is also provided on the lower coupler 20.

Because the lower coupler 20 belongs to a part which is easy to be touched by a human body, the distance between the conductive contact of the central ring 11 and the top of the lower coupler 20 is set to be more than or equal to 8mm, so that the conductive contact of the central ring 11 can meet the creepage distance requirement, and the safety of the lower coupler 20 is ensured. It is of course understood that the first, second and third conductive contacts in the lower coupler 20 may each be disposed at a distance greater than or equal to 8mm from the top of the lower coupler 20, depending on design requirements.

As shown in fig. 1, the upper coupler 10 further includes a housing 16 and four posts 15 connected to the center ring conductive contact 21, the first conductive contact, the second conductive contact, and the third conductive contact, respectively. Among them, the housing 16 is a plastic member, which can ensure better safety when the four-core connector of the example of the present embodiment is applied to a device with temperature or water level detection. Meanwhile, as shown in fig. 3, a distance L4 between the casing 16 and the third conductive ring 14 is set to be greater than or equal to 3.2 mm. This allows the distance between the housing 16 and the third conductive ring 14 to also meet basic insulation requirements, which can further improve the safety of the four-core connector.

Example two

The embodiment of the utility model provides an on the other hand still provides an electric heating appliance, including utensil body 30 and base and the four-core connector of any implementation in the embodiment one. Wherein, the upper coupler 10 is generally installed below the appliance body 30, i.e. the bottom of the kettle/cup; the lower coupler 20 is typically mounted on a base. When the electric heating appliance is used, the upper coupler 10 is coupled with the lower coupler 20, and the conductive ring in the upper coupler 10 is connected with the conductive contact in the lower coupler 20, so that the control board 40 of the electric heater controls the heating device 32 and the detecting device 31 to work. The electric heating appliance comprises the four-core connector, on one hand, special detection of objects in the electric heating appliance can be realized, such as water level detection, temperature detection and the like; on the other hand, the insulation strengthening requirement can be met, the safety of the electric heating appliance is improved, and the cost is reduced.

As shown in fig. 5, the electric heating appliance further includes a control board 40, and the lower coupler 20 is connected to the control board 40; the control board 40 is provided with an isolated power supply 41 and a controller 42. The input end of the isolation power supply device 41 is connected with the live wire and the zero wire, the output end of the isolation power supply device 41 is connected with the ground wire and the controller 42, and the isolation power supply device 41 is used for isolating strong current and weak current on the control panel 40. The isolated power supply 41 may be an isolated switching power supply or an isolated transformer.

The electric heating appliance of the embodiment adopts the four-core connector, and since the distance between the first conductive ring 12 and the second conductive ring 13 in the four-core connector meets the requirement of reinforced insulation, the control board 40 of the electric heating appliance is also correspondingly provided with the isolated power supply device 41, so that the strong current and the weak current on the control board 40 also meet the requirement of reinforced insulation, and the electric shock hazard of a user is avoided. As shown in fig. 5, the input terminal of the isolated power supply 41 is connected to the live and neutral wires, and the output terminal is connected to the ground and the controller 42.

In the prior art, a non-isolated power supply is usually adopted as a power supply on a control panel, so that when the water level of an appliance body is detected, the strong current and the weak current on the control panel are not isolated, and the electric shock accident of a user can be possibly caused.

Also, since the coupler on the market at present cannot satisfy the requirement for enhanced insulation, the ground line of the AC power input of the conventional electric heater can be designed only separately from the ground line of the power supply of the control board 40. In the electric heating appliance of the embodiment, the four-core connector can meet the requirement of reinforced insulation, so that the ground wire of the AC power input can be shared with the ground wire of the isolated power supply device 41, and the design can reduce the cost of the electric heating appliance.

As shown in fig. 5, the heating device 32 is disposed on the appliance body 30 of the electric heating appliance, and when the upper coupler 10 is coupled to the lower coupler 20, one end of the first conductive set is connected to the heating device 32, the other end is connected to the live wire and the neutral wire, and the second conductive set is connected to the controller 42 and the ground wire. The heating device 32 may be a heating plate, a heating wire, or a heating tube, for example. The alternating current power supply directly supplies power for the heating device 32, which belongs to strong electricity, and the control panel 40 supplies power for electronic components such as the controller 42 and the like as weak electricity, in the embodiment, the strong electricity and the weak electricity are isolated through the isolation power supply device 41, namely, the strong electricity is converted into the weak electricity through the isolation power supply device 41 and then is supplied to the control panel for use, so that the requirement of strengthening insulation between the strong electricity and the weak electricity on the control panel can be met, and by combining the coupler, the instrument body 30 and the base in the electric heating instrument can meet the requirement of strengthening insulation respectively, and the safety of the electric heating instrument is improved.

It will of course be appreciated that the first conductor set could be connected to the controller 42 and ground, and the second conductor set connected to the heating unit 32 on one end and to the live and neutral conductors on the other, depending on the design requirements.

The appliance body 30 of the electric heating appliance is further provided with a detection device 31. As shown in fig. 5, the second conductive set is connected to the detection device 31; when the upper coupler 10 is coupled to the lower coupler 20, the detecting device 31 is connected to the controller 42 and the ground. The detecting device 31 may be, for example, a water level detecting device or a temperature detecting device. It will be understood that the second conductive set may be connected to the detecting device 31 according to different design requirements, and the first conductive set is connected to the heating device 32 at one end and to the live and neutral wires at the other end.

As shown in fig. 5, the control board 40 is further provided with a control switch 43, one end of the control switch 43 is connected to the live wire, the other end is electrically connected to the lower coupler 20, and the control end is connected to the controller 42. The control switch 43 may be a thyristor or a relay.

In the electric heating appliance of the embodiment, the four-core connector and the control board 40 both satisfy the safety requirement and the reinforced insulation requirement, and due to the design of the isolated power supply device 41, the appliance body 30 can be directly contacted with water for water level detection or temperature detection.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. A four-core connector comprises an upper coupler and a lower coupler, wherein the upper coupler can be coupled with the lower coupler, and is characterized in that a central ring, a first conducting ring, a second conducting ring and a third conducting ring are sequentially arranged in the radial direction of the upper coupler from inside to outside;

the center ring and the first conductive ring are a first conductive group, the second conductive ring and the third conductive ring are a second conductive group, one of the first conductive group and the second conductive group is used for being connected with strong current, and the other of the first conductive group and the second conductive group is used for being connected with weak current;

the distance between the first conductive ring and the second conductive ring is greater than or equal to 8 mm.

2. The quad connector of claim 1, wherein a distance between the center ring and the first conductive ring, and a distance between the second conductive ring and the third conductive ring are greater than or equal to 3.2mm, respectively.

3. The quad connector of claim 1, wherein the lower coupler includes a center ring conductive contact, a first conductive contact, a second conductive contact, and a third conductive contact;

the center ring conductive contact, the first conductive contact, the second conductive contact, and the third conductive contact can be electrically connected with the center ring, the first conductive ring, the second conductive ring, and the third conductive ring, respectively;

a distance between at least one of the center ring conductive contact, the first conductive contact, the second conductive contact, and the third conductive contact and a top of the lower coupler is greater than or equal to 8 mm.

4. The quad connector of claim 3, wherein the lower coupler further includes four posts connected to the center ring, first, second, and third conductive contacts, respectively.

5. The quad connector of any of claims 1-4, wherein the upper coupler further comprises a housing, the housing being plastic, the distance between the housing and the third conductive ring being greater than or equal to 3.2 mm.

6. An electrically heated appliance comprising an appliance body and a base, characterized in that it further comprises a four-core connector according to any one of claims 1 to 5;

the upper coupler is arranged on the appliance body, and the lower coupler is arranged on the base.

7. The electrically heated appliance of claim 6 further comprising a control board, said lower coupler being connected to said control board;

the control panel is provided with an isolation power supply device and a controller, the input end of the isolation power supply device is connected with the live wire and the zero wire, the output end of the isolation power supply device is connected with the ground wire and the controller, and the isolation power supply device is used for isolating the strong current and the weak current on the control panel.

8. Electrically heated appliance according to claim 7, wherein the appliance body is further provided with heating means;

when the upper coupler is coupled with the lower coupler, one end of one of the first conducting set and the second conducting set is connected with the heating device, the other end of the one of the first conducting set and the second conducting set is connected with the live wire and the zero wire, and the other end of the one of the first conducting set and the second conducting set is connected with the controller and the ground wire.

9. The electrically heated appliance of claim 8, wherein said appliance body is further provided with a detection means, the other of said first and second electrically conductive sets being connected to said detection means;

when the upper coupler is coupled with the lower coupler, the detection device is connected with the controller and the ground wire.

10. An electrical heating appliance as claimed in any one of claims 7 to 9, wherein the isolated power supply is an isolated switching power supply or an isolated transformer;

and/or the presence of a gas in the gas,

the control panel is also provided with a control switch, one end of the control switch is connected with the live wire, the other end of the control switch is electrically connected with the lower coupler, and the control end of the control switch is connected with the controller.

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