Connecting structure of heating plate and mounting base

Abstract

The utility model discloses a connecting structure of a heating plate and a mounting base. The connecting structure comprises the mounting base, the heating plate, an anode wiring pin, a cathode wiring pin and a pin crimping assembly, the mounting base is a shell seat with an opening in the upper end and a concave cavity in the middle; the heating plate is a heating component made of metal, and the bottom of the heating plate is covered with a thick film circuit. Two exposed electrode contacts are arranged on the thick film circuit and are used for being connected with the positive electrode and the negative electrode of the circuit; and the positive wiring pin and the negative wiring pin are connected with the electrode contacts of the heating plate in a pressing manner through a pin pressing assembly. According to the connecting structure of the heating plate and the mounting base, the positive electrode wiring pin and the negative electrode wiring pin are pressed at the wiring contacts through the crimping assembly, so that a traditional circuit welding mode is replaced; the outer wall of the connecting piece between the heating plate and the mounting base is sleeved with the spring, so that the heating plate and the mounting base are flexibly connected, and the effects of avoiding vibration, reducing the assembly precision requirement and the like can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heating products, in particular to a connection structure between a heating plate and a mounting base. Background Art

[0002] Existing electric kettles (and similar products such as milk frothers, milk mixing pots, and milk bottle mixing bottles) often use a heating tube base for heating. The heat generated by the heating tube is transferred to the bottom of the kettle body through the metal plate on the bottom of the kettle to heat it. However, direct contact between the heating tube and the metal plate is generally not suitable, resulting in relatively low heat transfer efficiency and low heating efficiency.

[0003] Meanwhile, high-end electric kettles on the market use thick-film heating bases with high heating efficiency. Since the thick-film circuit is printed on the metal base, it is necessary to manually solder the wires to the power supply during assembly and production. However, for such products, using traditional soldering methods has the following problems:

[0004] 1. When assembling the product, the assembly efficiency is reduced, and certain welding technical requirements are placed on the assemblers. At the same time, there is a certain degree of instability in the welding quality;

[0005] 2. When the product is in use, high temperatures can easily cause the solder joints to melt, causing the heating circuit to be disconnected and the product to become unusable.

[0006] 3. The connection strength between the wiring metal sheet and the wiring contact (electrode contact) is insufficient. Utility Model Content

[0007] The purpose of the utility model is to provide a connection structure between a heating plate and a mounting base, which has a simple and reasonable design and a stable and firm structure; a compression spring is used to press the wiring metal sheet at the wiring contact to replace the traditional circuit welding method; a spring is sleeved on the outer wall of the connecting piece between the heating plate and the mounting base, so that the heating plate and the mounting base are flexibly connected, which can play the role of shock absorption and reducing the assembly precision requirements.

[0008] In order to solve the above technical problems, the technical solution of the utility model is:

[0009] A connection structure between a heating plate and a mounting base, comprising a mounting base, a heating plate, a positive electrode wiring pin, a negative electrode wiring pin, and a pin crimping assembly;

[0010] The mounting base is a shell with an open top and a concave cavity in the middle. A waterproof socket is provided at the bottom, and several electrical components are arranged on it, including a circuit board, a thermostat, a power supply element, a thermistor, a fuse, etc.

[0011] The heating plate is a heating element made of metal, and a thick film circuit is covered on its bottom; the thick film circuit is provided with two exposed electrode contacts for connecting to the positive and negative poles of the circuit.

[0012] The heating plate is arranged in a concave cavity of the mounting base;

[0013] The positive electrode connection pins and the negative electrode connection pins are tightly connected to the electrode contacts of the heating plate through the pin crimping assembly, and the other ends thereof are electrically connected to the circuit board.

[0014] One of the embodiments of the pin crimping assembly:

[0015] The pin crimping assembly includes a screw, a nut, and a crimping seat; the crimping seat is provided with a pin through-hole and a screw through-hole; the positive and negative wiring pins are inserted into the pin through-holes, and the screw is inserted into the screw through-holes; the bottom end of the screw is threadedly connected to the nut; the crimping seat and the nut are respectively provided on the upper and lower surfaces of the mounting base. A limit platform is provided at the top of the screw, and the limit platform is connected to the heating plate. When the nut is rotated, the screw can move up and down, and when it moves downward, it can drive the heating plate to move downward, and then cling to the upper top surfaces of the positive and negative wiring pins, so that the positive and negative wiring pins are tightly connected to the electrode contacts.

[0016] Preferably, the positive electrode connection pin, the negative electrode connection pin and the crimping seat are provided with spring washers.

[0017] The second embodiment of the pin crimping assembly:

[0018] The pin crimping assembly includes a compression spring and a limiting boss;

[0019] The limiting boss is a limiting connector made of metal, and includes an upper flat touch plate and a lower limiting boss.

[0020] The positive electrode connection pin and the negative electrode connection pin are connection metal sheets;

[0021] The bottom end of the wiring metal sheet is electrically connected to the circuit board, and the top end is connected to the limiting convex column. The upper end of the wiring metal sheet is provided with a limiting through hole, and the limiting through hole is sleeved on the limiting column.

[0022] The mounting base is provided with a spring mounting column cavity, and the compression spring is disposed within the spring mounting column cavity; the upper end of the compression spring abuts against and presses the upper end of the wiring metal sheet, causing the wiring metal sheet to abut against the limiting protrusion, which in turn is pressed against the electrode contact of the heating plate (the flat contact plate is connected to the electrode contact). At the same time, the upper end of the limiting protrusion is inserted into the middle cavity of the compression spring, so that the horizontal displacement of the limiting protrusion is limited (and the vertical displacement is also limited), so that it is stably connected to the electrode contact, and the wiring metal sheet and the limiting protrusion are also stably connected.

[0023] A limiting boss is designed between the wiring metal sheet and the electrode contact. Its main function is to limit the horizontal displacement of the wiring metal sheet, and the vertical direction is under pressure from a compression spring.

[0024] To achieve a floating connection between the heating plate and the mounting base, the mounting base is provided with several threaded mounting holes on its outer edge, into which bolts are connected; guide posts are located at the upper ends of the bolts. The heating plate is provided with mounting through-holes on its outer edge, into which the upper ends of the guide posts are movably inserted; and buffer springs are sleeved on the outer walls of the guide posts, with the upper and lower ends of the buffer springs respectively contacting the heating plate and the mounting base.

[0025] The connection structure between the heating plate and the mounting base of the present application is a component of a heating product, and the top of the heating plate is fixed and limited.

[0026] Beneficial effects of the utility model:

[0027] Its design is simple and reasonable, and its structure is stable and firm;

[0028] It uses a crimping assembly to press the positive and negative wiring pins onto the wiring contacts to replace the traditional circuit welding method; a spring is sheathed on the outer wall of the connector between the heating plate and the mounting base to provide a flexible connection between the heating plate and the mounting base, which can serve to absorb shock and reduce assembly precision requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a connection structure between a heating plate and a mounting base according to the present invention;

[0030] Figure 2 This is a structural diagram of the connection structure between a heating plate and a mounting base of the present invention (bottom perspective);

[0031] Figure 3 This is a bottom view of the connection structure between a heating plate and a mounting base according to the present invention;

[0032] Figure 4 This is an exploded schematic diagram of the connection structure between a heating plate and a mounting base of the present invention;

[0033] Figure 5 This is an exploded schematic diagram of the connection structure between a heating plate and a mounting base of the present invention (bottom view);

[0034] Figure 6 This is a structural diagram of another embodiment of the present utility model;

[0035] Figure 7 The figure is a schematic diagram of the structure and connection relationship of the compression spring, the limiting boss and the wiring metal sheet of the present invention. DETAILED DESCRIPTION

[0036] The following is a further description of specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is intended to facilitate understanding of the present invention and does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0037] like Figure 1-5 As shown, a connection structure between a heating plate and a mounting base includes a mounting base 1, a heating plate 2, a positive electrode wiring pin 3, a negative electrode wiring pin 4, and a pin crimping assembly 5;

[0038] The mounting base 1 is a shell with an open top and a concave cavity in the middle. A waterproof socket is provided at the bottom, and several electrical components are arranged on it, including a circuit board, a thermostat 11, a power supply element, a thermistor, a fuse, etc.

[0039] The heating plate 2 is a heating element made of metal, and a thick film circuit 21 is covered on its bottom. Two exposed electrode contacts 22 are provided on the thick film circuit 21 for connecting to the positive and negative electrodes of the circuit.

[0040] The heating plate 2 is arranged in the cavity of the mounting base 1;

[0041] The positive electrode connection pin 3 and the negative electrode connection pin 4 are pressed and connected to the electrode contact 22 of the heating plate 2 through the pin crimping assembly 5, and the other ends thereof are electrically connected to the circuit board.

[0042] One of the embodiments of the pin crimping assembly 5:

[0043] The pin crimping assembly 5 includes a screw 51, a nut 52, and a crimping seat 53; the crimping seat 53 is provided with a pin through-hole and a screw through-hole; the positive terminal pin 3 and the negative terminal pin 4 are inserted into the pin through-hole, and the screw 51 is inserted into the screw through-hole; the bottom end of the screw 51 is threadedly connected to the nut 52; the crimping seat 53 and the nut 52 are respectively provided on the upper and lower surfaces of the mounting base 1. A limit platform 54 is provided at the top of the screw 51, and the limit platform 54 is connected to the heating plate 2. When the nut 52 is rotated, the screw 51 can move up and down, and when it moves downward, it can drive the heating plate 2 to move downward, and then stick to the upper top surface of the positive terminal pin 3 and the negative terminal pin 4, so that the positive terminal pin 3 and the negative terminal pin 4 are tightly connected to the electrode contact 22.

[0044] Preferably, the positive electrode connection pin 3 , the negative electrode connection pin 4 and the crimping seat 53 are provided with spring pads 55 .

[0045] like Figure 6 、 Figure 7As shown, the second embodiment of the pin crimping assembly 5:

[0046] The pin crimping assembly 5 includes a compression spring 56 and a limiting boss 57;

[0047] The limiting protrusion 57 is a limiting connecting piece made of metal, and includes an upper flat touch plate 571 and a lower limiting post 572 .

[0048] The positive electrode connection pin 3 and the negative electrode connection pin 4 are connection metal sheets 6;

[0049] The bottom end of the wiring metal sheet 6 is electrically connected to the circuit board, and the top end is connected to the limiting boss 57. The upper end of the wiring metal sheet 6 is provided with a limiting through hole 61, which is sleeved on the limiting boss 57.

[0050] The mounting base 1 is provided with a spring mounting column cavity 10, and the compression spring 56 is disposed within the spring mounting column cavity 10; the upper end of the compression spring 56 abuts against and presses the upper end of the wiring metal sheet 6, causing the wiring metal sheet 6 to abut against the limiting protrusion 57, and the limiting protrusion 57 is pressed against the electrode contact 22 of the heating plate 2 (the flat contact plate 571 is connected to the electrode contact 22). At the same time, the upper end of the limiting protrusion 57 is inserted into the middle cavity of the compression spring 56, so that the horizontal displacement of the limiting protrusion 57 is limited (the vertical direction is also limited), so that it is stably connected to the electrode contact 22, and the wiring metal sheet 6 and the limiting protrusion 57 are also stably connected.

[0051] A limiting protrusion 57 is designed between the wiring metal sheet 6 and the electrode contact 22. Its main function is to limit the horizontal displacement of the wiring metal sheet 6. The vertical direction is under pressure from the compression spring 56.

[0052] To achieve a floating connection between the heating plate 2 and the mounting base 1, the mounting base 1 is provided with several threaded mounting holes on its outer edge, into which bolts 7 are connected; guide posts 71 are provided at the upper ends of the bolts 7. The heating plate 2 is provided with mounting through-holes on its outer edge, into which the upper ends of the guide posts 71 are movably inserted; a buffer spring 8 is sheathed on the outer wall of the guide post 71, with the upper and lower ends of the buffer spring 8 respectively contacting the heating plate 2 and the mounting base 1.

[0053] The connection structure between the heating plate 2 and the mounting base 1 of the present application is a component of a heating product, and the top of the heating plate 2 is fixed and limited.

[0054] The heating plate 2 can be integrally formed into the inner liner of the kettle, or can be welded to the bottom of the inner liner of the kettle. The electric kettle described in this application is not limited to electric kettles, and also includes milk frothers, milk mixing pots, milk mixing bottles and other similar products that heat water.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is apparent to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and the changes still fall within the scope of protection of the present invention.

Claims

1. A connection structure between a heating plate and a mounting base, characterized in that: Includes mounting base, heating plate, positive wiring pins, negative wiring pins, and pin crimping assembly; The mounting base is a shell base with an opening at the top and a concave cavity in the middle; The heating plate is a heating element made of metal, with a thick film circuit covering its bottom. The thick film circuit is provided with two exposed electrode contacts for connecting to the positive and negative electrodes of the circuit. The heating plate is arranged in a concave cavity of the mounting base; The positive electrode connection pins and the negative electrode connection pins are tightly connected to the electrode contacts of the heating plate through the pin crimping assembly, and the other ends thereof are electrically connected to the circuit board.

2. The connection structure between the heating plate and the mounting base according to claim 1, characterized in that: The pin crimping assembly includes a screw, a nut, and a crimping seat; the crimping seat is provided with a pin through hole and a screw through hole; the positive and negative terminal pins are inserted into the pin through holes, and the screw is inserted into the screw through hole; the bottom end of the screw is threadedly connected to the nut; the crimping seat and the nut are respectively provided on the upper and lower surfaces of the mounting base; A limiting platform is provided at the top end of the screw rod, and the limiting platform is connected to the heating plate.

3. The connection structure between the heating plate and the mounting base according to claim 2, characterized in that: The positive electrode connection pin, the negative electrode connection pin and the crimping seat are provided with spring washers.

4. The connection structure between the heating plate and the mounting base according to claim 1, characterized in that: The pin crimping assembly includes a compression spring and a limiting boss; The positive electrode connection pin and the negative electrode connection pin are connection metal sheets; The limiting boss is a metal limiting connector, comprising an upper flat touch plate and a lower limiting post; The bottom end of the wiring metal sheet is electrically connected to the circuit board, and the top end is connected to the limiting protrusion; the upper end of the wiring metal sheet is provided with a limiting through hole, and the limiting through hole is sleeved on the limiting protrusion; The mounting base is provided with a spring mounting column cavity, and the compression spring is arranged in the spring mounting column cavity; the upper end of the compression spring is pressed against the top and the upper end of the wiring metal sheet, so that the wiring metal sheet is pressed against the limiting convex column. The limiting protrusions are pressed tightly against the electrode contacts of the heating plate; and the flat touch plates are connected to the electrode contacts.

5. The connection structure between the heating plate and the mounting base according to any one of claims 1 to 4, characterized in that: A waterproof socket is provided at the bottom of the mounting base, on which are arranged several electrical components, including a circuit board, a temperature controller, a power supply component, a thermistor, and a fuse.

6. The connection structure between the heating plate and the mounting base according to claim 4, characterized in that: The upper end of the limiting boss is inserted into the middle cavity of the compression spring.

7. The connection structure between the heating plate and the mounting base according to claim 5, characterized in that: The heating plate is an integrally formed kettle liner.

8. The connection structure between the heating plate and the mounting base according to claim 5, characterized in that: The heating plate is welded to the bottom of the kettle inner container.

9. The connection structure between the heating plate and the mounting base according to claim 5, characterized in that: The heating plate is attached to the bottom of the kettle inner container.

10. The connection structure between the heating plate and the mounting base according to claim 5, characterized in that: The outer edge of the mounting base is provided with a plurality of threaded mounting holes, and bolts are connected in the threaded mounting holes; the upper ends of the bolts are provided with guide posts; The outer edge of the heating plate is provided with a mounting hole, and the upper end of the guide column is movably inserted into the mounting hole; the outer wall of the guide column is sleeved with a buffer spring, and the upper and lower ends of the buffer spring are respectively attached to the heating plate and the mounting base.

Images