Coupler and electric heating appliance

Abstract

The coupler comprises a lower coupling seat, the center of the lower coupling seat is provided with a lower water inlet structure, the outer side of the lower water inlet structure extends along the height direction to form three coupling orientation columns which are uniformly distributed at equal intervals, each coupling orientation column is internally provided with a containing groove, and an insertion spring is installed in each containing groove; the lower side of the upper coupling seat extends to form a shell which is matched with the lower coupling seat in shape and sleeves the lower coupling seat, an upper water inlet structure movably connected with the lower water inlet structure is arranged in the shell, a coupling directional groove is formed between the shell and the upper water inlet structure, a contact pin is connected in each coupling directional groove, and the contact pins are inserted into the containing grooves and electrically contacted with the insertion springs; the electric heating appliance adopts the contact pin type coupler with the structure, so that the coupler does not need to be mounted in the center of the bottom of the kettle body, and when the kettle body is placed on the base, the contact pin type coupler can realize the electric coupling between the electric device on the kettle body and the base and can also realize the automatic water feeding or water discharging function on the kettle body.

Description

Technical Field

[0001] The utility model relates to the field of electric kettles, in particular to a coupler and an electric heating appliance. Background Art

[0002] At present, in order to improve the appearance of electric kettles, more and more electric kettles use all-glass kettle bodies as the kettle body for holding water waiting to be heated. Since the glass kettle body is usually a one-piece shape, in order to facilitate the installation of heating elements such as a heating plate, the heating plate can generally be set at the bottom of the glass kettle body, as shown in the kettle body and liquid heater of Chinese patent document, application number: CN201721489842.3, in which a heat conduction plate is installed between the bottom of the kettle and the electric heating device to conduct heat to the electric heating device on the bottom of the kettle. However, the heat conduction plate needs to be fixed by multiple structures such as fixing glue and heat insulation rings, which makes the installation structure complicated and the installation process complicated, resulting in low production efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned existing problems and provide a coupler and an electric heating device with a simple and reasonable structure.

[0004] A coupler comprising:

[0005] A lower coupling seat, wherein a lower water inlet structure is provided at the center of the lower coupling seat, and three or more coupling directional columns are evenly spaced and extended along the height direction on the outer side of the lower water inlet structure, each coupling directional column is provided with a receiving groove, and a plug spring is installed in the receiving groove;

[0006] An upper coupling seat, wherein a shell of matching shape is extended from the lower side of the upper coupling seat and is sleeved on the outside of the lower coupling seat, an upper water inlet structure movably connected to the lower water inlet structure is provided inside the shell, a coupling directional groove coupled to the coupling directional column is formed between the shell and the upper water inlet structure, and each coupling directional groove is connected to a pin, which is inserted into the receiving groove and electrically contacts the plug spring.

[0007] The purpose of the utility model can also be solved by the following technical measures:

[0008] As a more specific solution, a central sleeve extends from the upper side of the lower coupling seat, the inner cavity of the central sleeve forms a lower assembly through hole, the lower water inlet structure is movably arranged in the lower assembly through hole, and the coupling directional column is integrally connected to the outer side wall of the central sleeve;

[0009] As a further solution, a central inner sleeve is extended from the lower side of the upper coupling seat and embedded in the central outer sleeve. The inner cavity of the central inner sleeve forms an upper assembly through hole. The upper water inlet structure is fixed in the upper assembly through hole. A coupling directional groove is formed between the outer shell and the central inner sleeve.

[0010] As a further solution, the top end of the pin passes through the top surface of the upper coupling seat and is connected to a terminal block. The terminal ends of each terminal block are extended in the same direction, and the top surface of the upper coupling seat is provided with a positioning structure that cooperates with the terminal ends of each terminal block.

[0011] As a further solution, the top surface of the upper coupling seat is provided with a positioning protrusion extending around the outer periphery of the upper assembly through hole, and the inner side of the positioning protrusion forms an upper step surface, and the upper step surface is circumferentially extended with a number of equally spaced supporting protrusions, and the outer side of the upper water inlet structure is provided with a supporting end surface, and the supporting end surface is limited to abutting against each supporting protrusion.

[0012] As a further solution, a supporting flange extends inward from the bottom end of the central inner sleeve, and the upper water inlet structure is tightly inserted into the upper assembly through hole, with its bottom abutting against the upper side of the supporting flange.

[0013] As a further solution, the lower water inlet structure includes a water inlet pipe, a water inlet nozzle joint is provided at the top of the water inlet pipe, a limiting ring is extended on the outside of the water inlet pipe, the bottom of the center sleeve is provided with a lower step surface, and the outer sleeve of the water inlet pipe is connected to a first return spring that is abutted between the limiting ring and the lower step surface. The water inlet pipe elastically slides in the upper assembly through hole through the first return spring.

[0014] As a further solution, the upper water inlet structure includes a valve core sleeve, the top of the valve core sleeve is provided with a water outlet joint, the lower side of the water outlet joint is provided with a valve cavity, the bottom of the valve cavity is closely connected with a silicone sealing sleeve, the silicone sealing sleeve is matched with the water inlet joint, and the upper side of the silicone sealing sleeve is provided with a sealing steel ball, a steel ball positioning seat and a second return spring, the two ends of the second return spring are against each other between the steel ball positioning seat and the top surface of the valve cavity, and the sealing steel ball elastically seals the upper port of the silicone sealing sleeve.

[0015] As a further solution, a through hole is provided on the top of the coupling directional column, the accommodating groove is provided on the lower side of the through hole, and the upper portion of the through hole is trumpet-shaped and forms a pin introduction slope.

[0016] The purpose of this utility model is achieved in this way:

[0017] An electric heating appliance comprises a base and a kettle body, wherein a handle is provided on the side wall of the kettle body, and a coupler of the above structure is provided between the base and the handle, wherein the lower coupling seat is installed on the base, and the upper coupling seat is installed at the bottom of the handle.

[0018] As a further solution, a kettle body positioning portion is provided on the base, and a heating element is provided on the base corresponding to the kettle body positioning portion. The kettle body is placed on the upper side of the heating element and forms a detachable connection with the base. A handle positioning portion is provided on one side of the kettle body positioning portion, and the bottom of the handle cooperates with the handle positioning portion, and the lower coupling seat is arranged at the bottom of the handle positioning portion.

[0019] The beneficial effects of the utility model are as follows:

[0020] This electric heating appliance adopts a pin-type coupler of this structure, so the coupler does not need to be installed at the bottom center of the kettle body. When the kettle body is placed on the base, the pin-type coupler can electrically couple the electrical components on the kettle body with the base, and can also realize the automatic water filling or discharging function of the kettle body. The various springs and pins are circumferentially separated by the structure of the lower coupling base and the upper coupling base to increase the creepage distance and improve the safety of the coupler. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an embodiment of a coupler in the present utility model.

[0022] Figure 2 This is a structural diagram of the upper coupling seat in the utility model.

[0023] Figure 3 This is a schematic diagram of the sectional structure of the upper coupling seat in the utility model.

[0024] Figure 4 This is a schematic diagram of the exploded structure of the terminal block of the upper coupling seat in the utility model.

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the lower coupling seat in the utility model.

[0026] Figure 6 This is a structural diagram of an embodiment of the electric heating device in the present utility model. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] See also Figures 1 to 5 As shown, a coupler includes:

[0029] A lower coupling seat 1 is provided with a lower water inlet structure 3 at its center. Three evenly spaced coupling directional columns 4 are extended from the outer side of the lower water inlet structure 3 in the height direction. Each coupling directional column 4 is provided with a receiving groove 401, and a plug spring 5 is installed in the receiving groove 401.

[0030] The upper coupling seat 2 has a matching outer shell 21 extending from its lower side and being sleeved on the outside of the lower coupling seat 1. An upper water inlet structure 6 movably connected to the lower water inlet structure 3 is provided inside the outer shell 21. A coupling orientation groove 201 coupled to the coupling orientation column 4 is formed between the outer shell 21 and the upper water inlet structure 6, and each coupling orientation groove 201 is connected to a pin 7, which is inserted into the receiving groove 401 and electrically contacts the plug spring 5.

[0031] This electric heating appliance adopts a pin 7-type coupler of this structure, so that the coupler does not need to be installed at the bottom center of the kettle body 10. When the kettle body 10 is placed on the base 9, the pin 7-type coupler can electrically couple the electrical components on the kettle body 10 with the base 9, and can also realize the automatic water filling or water discharge function of the kettle body 10. Each spring 5 and each pin 7 is circumferentially separated by the structure of the lower coupling seat 1 and the upper coupling seat 2 to increase the creepage distance and improve the safety of the coupler.

[0032] A central sleeve 11 extends from the upper side of the lower coupling seat 1. The inner cavity of the central sleeve 11 forms a lower assembly through-hole 111. The lower water inlet structure 3 is movably disposed in the lower assembly through-hole 111. The coupling directional column 4 is integrally connected to the outer wall of the central sleeve 11.

[0033] A central inner sleeve 22 embedded in the central outer sleeve 11 extends from the lower side of the upper coupling seat 2, and the inner cavity of the central inner sleeve 22 forms an upper assembly through hole 221. The upper water inlet structure 6 is fixed in the upper assembly through hole 221, and a coupling orientation groove 201 is formed between the outer shell 21 and the central inner sleeve 22.

[0034] The central outer sleeve 11 and the central inner sleeve 22 provide a mounting structure for the lower water inlet structure 3 or the upper water inlet structure 6 , and can separate the lower water inlet structure 3 or the upper water inlet structure 6 from the conductive components, thereby improving the safety of the coupler.

[0035] The top end of the pin 7 passes through the top surface of the upper coupling seat 2 and is connected to the terminal piece 8. The wiring ends of each terminal piece 8 are extended in the same direction. The top surface of the upper coupling seat 2 is provided with a positioning structure that cooperates with the wiring ends of each terminal piece 8. The wiring ends of each terminal piece 8 are all led to the same side, which is convenient for workers to assemble and connect (mainly for the upper coupling seat 2 to be installed in the handle 12, so that the wiring ends are close to the outside of the handle 12).

[0036] The positioning structure includes a positioning protrusion 23 extending from the top surface of the upper coupling seat 2 , and a positioning hole 801 is formed on the terminal piece 8 to cooperate with the positioning protrusion 23 .

[0037] The top surface of the upper coupling seat 2 is provided with a positioning protrusion 24 extending around the outer periphery of the upper assembly through hole 221, and a step surface 25 is formed on the inner side of the positioning protrusion 24. A plurality of equally spaced support protrusions 26 are circumferentially extended from the step surface 25. A supporting end surface 601 is provided on the outer side of the upper water inlet structure 6, and the supporting end surface 601 is limited to abut against each supporting protrusion 26; the supporting protrusion 26 cooperates with the supporting end surface 601 to limit the installation position of the upper water inlet structure 6.

[0038] A supporting flange 222 extends inward from the bottom end of the central inner sleeve 22, and the upper water inlet structure 6 is tightly inserted into the upper assembly through hole 221, and its bottom is against the upper side of the supporting flange 222; the supporting flange 222 can limit the installation depth of the upper water inlet structure 6.

[0039] The lower water inlet structure 3 includes a water inlet pipe 31, the top of the water inlet pipe 31 is provided with a water inlet nozzle joint 32, the outer side of the water inlet pipe 31 is extended with a limiting ring 33, the bottom of the central sleeve 11 is provided with a lower step surface 112, the outer sleeve of the water inlet pipe 31 is connected with a first return spring 34 which is abutted between the limiting ring 33 and the lower step surface 112, and the water inlet pipe 31 elastically slides in the upper assembly through hole 221 through the first return spring 34; when the kettle body 10 is disassembled and assembled, it can automatically connect or separate with the upper water inlet structure 6 in a sealed manner, and realize elastic contact to ensure the sealing effect.

[0040] The upper water inlet structure 6 includes a valve core sleeve 61, and the top of the valve core sleeve 61 is provided with a water outlet joint 62, which is used to connect the pipeline to the inner cavity of the kettle body 10. The lower side of the water outlet joint 62 is provided with a valve cavity 611, and the bottom of the valve cavity 611 is closely connected to a silicone sealing sleeve 63. The water inlet joint 32 is inserted into the silicone sealing sleeve 63 to achieve matching, and the silicone sealing sleeve 63 is provided with a plurality of sealing lips. The upper side of the silicone sealing sleeve 63 is provided with a sealing steel ball 64, a steel ball positioning seat 65 and a second return spring 6 6. The bottom of the steel ball positioning seat 65 is provided with a positioning groove that matches the shape of the sealing steel ball 64. The two ends of the second return spring 66 are pressed between the steel ball positioning seat 65 and the top surface of the valve chamber 611, and the sealing steel ball 64 elastically seals the upper end of the silicone sealing sleeve 63. After the coupler is coupled, the sealing steel ball 64 is lifted up by the water inlet joint 32 or flushed up by the water flow, thereby connecting to the silicone sealing sleeve 63. After the coupler is separated, the sealing steel ball 64 can automatically seal the silicone sealing sleeve 63 to prevent water leakage.

[0041] A through hole 402 is formed at the top of the coupling directional column 4, and the accommodating groove 401 is arranged on the lower side of the through hole 402. The upper part of the through hole 402 is trumpet-shaped and forms a pin introduction slope 403; the pin introduction slope 403 improves the efficiency of pin insertion.

[0042] The purpose of this utility model is achieved in this way:

[0043] See also Figure 6 As shown, an electric heating appliance includes a base 9 and a kettle body 10, and a handle 12 is provided on the side wall of the kettle body 10. A coupler of the above structure is provided between the base 9 and the handle 12, wherein the lower coupling seat 1 is installed on the base 9, and the upper coupling seat 2 is installed at the bottom of the handle 12; in this embodiment, the kettle body 10 is made of integrally sintered glass material, which can keep the kettle body 10 clean, transparent and beautiful, and the upper coupling seat 2 is set at the bottom of the handle 12, so that the upper coupling seat 2 can be hidden in the handle 12.

[0044] The base 9 is provided with a kettle body positioning portion 901, and the base 9 is provided with a heating element 13 corresponding to the kettle body positioning portion 901. The kettle body 10 is placed on the upper side of the heating element 13 and is detachably connected to the base 9.

[0045] The kettle body positioning portion 901 is concave and adapted to the bottom shape of the kettle body 10, which can position the kettle body 10 to prevent the kettle body 10 from being pushed, pulled or slid. In addition, the bottom surface of the kettle body 10 can abut or be adjacent to the heating element 13 (heating plate or heating film, etc.), which can directly heat the kettle body 10, reduce the weight of the kettle body 10, and improve heating efficiency.

[0046] A handle positioning portion 902 is provided on one side of the kettle body positioning portion 901, the bottom of the handle 12 cooperates with the handle positioning portion 902, and the lower coupling seat 1 is arranged at the bottom of the handle positioning portion 902; since the upper coupling seat 2 is installed at the bottom of the handle 12, and the upper coupling seat 2 adopts a three-pin type circumferentially evenly distributed arrangement of the pins 7, when the kettle body 10 is placed on the base 9, it is necessary to ensure that it is placed at a specified swing angle to ensure that the upper coupling seat 2 and the lower coupling seat 1 can be coupled up and down.

[0047] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A coupler, characterized in that: include: A lower coupling seat, wherein a lower water inlet structure is provided at the center of the lower coupling seat, and three or more coupling directional columns are evenly spaced and extended along the height direction on the outer side of the lower water inlet structure, each coupling directional column is provided with a receiving groove, and a plug spring is installed in the receiving groove; An upper coupling seat, wherein a shell of matching shape is extended from the lower side of the upper coupling seat and is sleeved on the outside of the lower coupling seat, an upper water inlet structure movably connected to the lower water inlet structure is provided inside the shell, a coupling directional groove coupled to the coupling directional column is formed between the shell and the upper water inlet structure, and each coupling directional groove is connected to a pin, which is inserted into the receiving groove and electrically contacts the plug spring.

2. A coupler according to claim 1, characterized in that: A central sleeve extends from the upper side of the lower coupling seat, the inner cavity of the central sleeve forms a lower assembly through hole, the lower water inlet structure is movably arranged in the lower assembly through hole, and the coupling directional column is integrally connected to the outer side wall of the central sleeve; A central inner sleeve is extended from the lower side of the upper coupling seat and embedded in the central outer sleeve. The inner cavity of the central inner sleeve forms an upper assembly through hole. The upper water inlet structure is fixed in the upper assembly through hole. A coupling directional groove is formed between the outer shell and the central inner sleeve.

3. The coupler according to claim 1, wherein: The top end of the pin passes through the top surface of the upper coupling seat and is connected to a terminal block. The terminal ends of each terminal block are extended in the same direction. The top surface of the upper coupling seat is provided with a positioning structure that cooperates with the terminal ends of each terminal block.

4. The coupler according to claim 1, wherein: The top surface of the upper coupling seat is provided with a positioning protrusion extending around the outer periphery of the upper assembly through hole, and the inner side of the positioning protrusion forms an upper step surface, and the upper step surface is circumferentially extended with a plurality of support protrusions evenly spaced and distributed. The outer side of the upper water inlet structure is provided with a supporting end surface, and the supporting end surface is limited to abut against each supporting protrusion.

5. The coupler according to claim 2, characterized in that: A supporting flange is extended inward from the bottom end of the central inner sleeve, and the upper water inlet structure is tightly inserted into the upper assembly through hole, with its bottom abutting against the upper side of the supporting flange.

6. The coupler according to claim 2, characterized in that: The lower water inlet structure includes a water inlet pipe, a water inlet nozzle joint is provided at the top of the water inlet pipe, a limiting ring is extended on the outside of the water inlet pipe, a lower step surface is provided at the bottom of the center sleeve, and a first return spring is connected to the outer sleeve of the water inlet pipe, which is abutted between the limiting ring and the lower step surface. The water inlet pipe slides elastically in the upper assembly through hole through the first return spring.

7. The coupler according to claim 1, characterized in that: The upper water inlet structure includes a valve core sleeve, a water outlet joint is provided at the top of the valve core sleeve, a valve cavity is provided on the lower side of the water outlet joint, a silicone sealing sleeve is closely connected to the bottom of the valve cavity, the silicone sealing sleeve cooperates with the water inlet joint, a sealing steel ball, a steel ball positioning seat and a second return spring are provided on the upper side of the silicone sealing sleeve, the two ends of the second return spring are abutted between the steel ball positioning seat and the top surface of the valve cavity, and the sealing steel ball elastically seals the upper port of the silicone sealing sleeve.

8. The coupler according to claim 1, characterized in that: A through hole is formed on the top of the coupling directional column, the accommodating groove is arranged on the lower side of the through hole, and the upper part of the through hole is trumpet-shaped and forms a pin introduction inclined surface.

9. An electric heating appliance comprising a base and a kettle body, wherein the side wall of the kettle body is provided with a handle, characterized in that: A coupler according to any one of claims 1 to 8 is provided between the base and the handle, wherein the lower coupling seat is mounted on the base, and the upper coupling seat is mounted on the bottom of the handle.

10. The electric heating device according to claim 9, characterized in that: A kettle body positioning portion is provided on the base, and a heating element is provided on the base corresponding to the kettle body positioning portion. The kettle body is placed on the upper side of the heating element and is detachably connected to the base. A handle positioning portion is provided on one side of the kettle body positioning portion, and the bottom of the handle cooperates with the handle positioning portion, and the lower coupling seat is provided at the bottom of the handle positioning portion.

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