Assembled electric hot plate device

Abstract

The utility model relates to the field of electric hot plate devices, in particular to an assembled electric hot plate device, which comprises an upper plate frame, a lower plate frame, a PTC (Positive Temperature Coefficient) sheet, a support leg assembly, a reflecting film and a positioning assembly, a lower plate frame is hinged to the lower end of the upper plate frame; a PTC sheet is adhered to the bottom end of the inner side of the lower plate frame; supporting foot grooves are formed in the four corners of the inner side of the lower plate frame. The inner side of the supporting foot groove is connected with a supporting foot assembly used for positioning the PTC piece and the PTC piece connecting line in an embedded mode. According to the utility model, the upper plate frame and the lower plate frame are designed to be opened and closed, so that the inside can be conveniently opened for installation and maintenance, the supporting leg assemblies are inserted into the supporting leg grooves, the edge pressing plates are utilized to tightly press the edges of the two sides of the PTC sheet, the PTC sheet is prevented from warping and falling off in the use process, PTC sheet connecting wires can be orderly planned and positioned, and the PTC sheet connecting wires are prevented from falling off. The reflecting film can be pressed and positioned through the positioning assembly, and the reflecting film can be rapidly repaired to be in an original shape when wrinkled or damaged.

Description

Technical Field

[0001] The utility model relates to the field of electric hot plate devices, in particular to an assembled electric hot plate device. Background Art

[0002] The electric hot plate mainly consists of a shell, a PTC semiconductor heating ceramic sheet, and an aluminum film. The main function of the electric hot plate is to provide heating, and it is widely used in laboratories, families, and industrial production.

[0003] However, for the existing electric hot plate, the assembly of each component is basically fixed by pasting or soldering. During later use, the joints of each component are very easy to fall off, resulting in the abnormal operation of the electric hot plate. Moreover, once the components assembled by the combination of pasting and soldering method are disassembled, it is very difficult to restore them to their original state, which greatly affects the subsequent user experience.

[0004] Therefore, aiming at the problem that the joints of each component of the electric hot plate are very easy to fall off and are difficult to restore, an assembled electric hot plate device can be designed. Summary of the Utility Model

[0005] In order to overcome the problem that the joints of each component of the electric hot plate are very easy to fall off and are difficult to restore.

[0006] The technical solution of the utility model is: an assembled electric hot plate device, including an upper plate frame, a lower plate frame, a PTC sheet, a support leg component, a reflective film, and a positioning component; the lower end of the upper plate frame is hinged to the lower plate frame; the PTC sheet is pasted on the inner bottom end of the lower plate frame; support leg grooves are opened at the four corners of the inner side of the lower plate frame; a support leg component for positioning the PTC sheet and the PTC sheet connection line is fitted and connected inside the support leg groove; the support leg component includes a support leg installation frame, an installation groove, and an edge pressing plate; an installation groove for guiding the PTC sheet connection line is opened on the inner side of the support leg installation frame close to the PTC sheet; an edge pressing plate for pressing the two sides of the PTC sheet is fixedly connected to one end of the support leg installation frame close to the PTC sheet; the reflective film is placed on the upper end of the lower plate frame; a positioning component for pressing the reflective film is fixedly connected to the upper edge of the lower plate frame; the positioning component includes a support frame, a placement space, an adjustment sleeve, an adjustment pressure rod, and a pressing strip; a placement space is opened inside the support frame; an adjustment sleeve is fixedly connected to the upper end of the support frame; the adjustment pressure rod is threadedly connected inside the adjustment sleeve; the lower end of the adjustment pressure rod is connected to the pressing strip through a bearing.

[0007] Preferably, in the first step, the plates of the upper plate frame 1 and the lower plate frame 2 are cut out from the raw materials and sent to a bending machine for bending and shaping. After the staff installs the upper plate frame 1 and the lower plate frame 2, wait for the laying work of the heating elements;

[0008] The main heating element of this assembled electric heating plate device is the PTC chips installed on the inner sides of the upper plate frame and the lower plate frame. The PTC chips have overvoltage protection function. When the voltage in the circuit exceeds its rated voltage, the PTC chips will quickly respond and disconnect the circuit, thus preventing the circuit from being damaged by overvoltage. Secondly, the PTC chips can also provide overcurrent protection. When the current exceeds the rated current of the PTC chips, they will also disconnect the circuit, effectively avoiding the damage of the circuit due to overcurrent.

[0009] The PTC chips also have temperature protection function. When the ambient temperature rises to a certain extent, the PTC chips will automatically disconnect the circuit to prevent the circuit from being damaged by high temperature. In addition to the above functions, the PTC chips can also automatically adjust the output power according to the load condition of the circuit. When the load in the circuit exceeds its rated load, the PTC chips will disconnect the circuit to protect the circuit from damage. This function enables the PTC chips to play a key role when the circuit load is abnormal and protects the safe operation of the circuit. Finally, the PTC chips can also provide a constant current output to ensure that the circuit maintains a stable current value during operation, which helps to improve the working efficiency of the circuit and extend its service life.

[0010] In the second step, during installation, unlock the upper plate frame and the lower plate frame to open them. Paste the PTC chips on the inner bottom end of the lower plate frame, insert the leg assembly into the leg slots, and use the edge pressing plate to press the two edges of the PTC chips tightly to prevent the PTC chips from warping and falling off during use.

[0011] In the third step, pass the connecting wires of the PTC chips through the installation slots of the leg assembly for wiring and fixing.

[0012] In the fourth step, close the lower plate frame and lock it. Take out the reflective film and insert it into the placement space of the positioning component, and operate the adjusting pressure rod on the edge of the support frame to make the adjusting pressure rod move down in the adjusting sleeve, and the pressure strip tightly presses the reflective film, so that the electric heating plate dissipates heat evenly and has a good heat preservation effect. Moreover, in this assembly method, when the reflective film is wrinkled or damaged, it can be quickly restored to its original state.

[0013] Preferably, lock catches are installed at the front ends of both the lower plate frame and the upper plate frame; a connection is inserted between adjacent lock catches; the lower plate frame and the upper plate frame are installed through the lock catches, which can facilitate opening for internal installation and maintenance.

[0014] Preferably, the leg assembly further includes a sealing limit strip; a sealing limit strip for increasing the sealing degree and firmness after the leg assembly is installed in the leg slots is fixedly connected to the outside of the leg installation frame; the number of the sealing limit strips is two groups and they are symmetrically distributed up and down.

[0015] Preferably, a through groove beneficial to heat transfer is opened on the upper end surface of the lower plate frame.

[0016] Preferably, the open end of the positioning component is the front end; the positioning component is located outside the reflective film.

[0017] Preferably, the positioning component further includes a telescopic spring; a telescopic spring is arranged outside the adjusting sleeve at the upper end of the support frame; the adjusting pressure rod can be positioned to prevent the pressing strip from shifting.

[0018] Preferably, there are four sets of adjusting sleeves, adjusting pressure rods, pressing strips and telescopic springs; the adjusting sleeves, adjusting pressure rods, pressing strips and telescopic springs are installed at the front, back, left and right ends of the support frame.

[0019] Advantages of the present utility model:

[0020] Compared with the traditional method of fixing various components by pasting or soldering, the present utility model adopts an opening and closing design of the upper plate frame and the lower plate frame, which can be conveniently opened for internal installation and maintenance. By inserting the support foot component into the support foot groove, not only the two side edges of the PTC sheet are tightly pressed by the edge pressing plate to prevent the PTC sheet from warping and falling off during use, but also the connecting wires of the PTC sheet can be orderly planned and positioned. The reflective film can be tightly pressed and positioned by the positioning component, and when the reflective film is wrinkled or damaged, it can be quickly restored to its original state. Description of the Drawings

[0021] Figure 1 Shown is a three-dimensional structural schematic diagram of the electric heating plate device of the present utility model;

[0022] Figure 2 Shown is an internal structural schematic diagram of the electric heating plate device of the present utility model after the upper plate frame and the lower plate frame are opened;

[0023] Figure 3 Shown is a partially enlarged structural schematic diagram of the support foot component of the electric heating plate device of the present utility model;

[0024] Figure 4 Shown is a partially enlarged structural schematic diagram of the positioning component of the electric heating plate device of the present utility model.

[0025] Description of the reference numerals: 1, upper plate frame; 2, lower plate frame; 3, PTC sheet; 4, support foot groove; 501, support foot mounting frame; 502, mounting groove; 503, edge pressing plate; 504, sealing limit strip; 6, reflective film; 701, support frame; 702, placement space; 703, adjusting sleeve; 704, adjusting pressure rod; 705, pressing strip; 706, telescopic spring; 8, lock catch; 9, through groove. Detailed Embodiments

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0027] Please refer to Figures 1-4, the present utility model provides an embodiment: an assembled electric heating plate device, including an upper plate frame 1, a lower plate frame 2, a PTC sheet 3, a foot component, a reflective film 6 and a positioning component; the lower end of the upper plate frame 1 is hinged to the lower plate frame 2; the PTC sheet 3 is pasted on the inner bottom end of the lower plate frame 2; foot slots 4 are provided at the four corners of the inner side of the lower plate frame 2; a foot component for positioning the PTC sheet 3 and the connection line of the PTC sheet 3 is fitted and connected inside the foot slot 4; the foot component includes a foot mounting frame 501, a mounting slot 502 and an edge pressing plate 503; a mounting slot 502 for guiding the connection line of the PTC sheet 3 is provided on the inner side of the foot mounting frame 501 close to the PTC sheet 3; one end of the foot mounting frame 501 close to the PTC sheet 3 is fixedly connected with an edge pressing plate 503 for pressing the two sides of the PTC sheet 3; the reflective film 6 is placed on the upper end of the lower plate frame 2; a positioning component for pressing the reflective film 6 is fixedly connected to the upper end of the edge of the lower plate frame 2; the positioning component includes a support frame 701, a placement space 702, an adjustment sleeve 703, an adjustment pressure rod 704 and a pressing strip 705; a placement space 702 is provided inside the support frame 701; the adjustment sleeve 703 is fixedly connected to the upper end of the support frame 701; the adjustment pressure rod 704 is threadedly connected inside the adjustment sleeve 703; the lower end of the adjustment pressure rod 704 is connected to the pressing strip 705 through a bearing, and locking buckles 8 are installed at the front ends of both the lower plate frame 2 and the upper plate frame 1; the locking buckles 8 are inserted and connected with adjacent locking buckles 8; the lower plate frame 2 and the upper plate frame 1 are installed through the locking buckles 8, which can be conveniently opened for internal installation and maintenance. The foot component further includes a sealing limit strip 504; a sealing limit strip 504 for increasing the sealing degree and firmness after the foot component is installed in the foot slot 4 is fixedly connected to the outside of the foot mounting frame 501; the number of the sealing limit strips 504 is two groups and they are symmetrically distributed up and down. A through groove 9 conducive to heat transfer is provided on the upper end surface of the lower plate frame 2. The opening end of the positioning component is the front end; the positioning component is located outside the reflective film 6. The positioning component further includes a telescopic spring 706; the telescopic spring 706 is arranged outside the adjustment sleeve 703 at the upper end of the support frame 701; the adjustment pressure rod 704 can be positioned to prevent the pressing strip 705 from shifting. There are four groups of the adjustment sleeve 703, the adjustment pressure rod 704, the pressing strip 705 and the telescopic spring 706; the adjustment sleeve 703, the adjustment pressure rod 704, the pressing strip 705 and the telescopic spring 706 are installed at the front, back, left and right ends of the support frame 701.

[0028] When working, in the first step, the plates of the upper plate frame 1 and the lower plate frame 2 are cut out from the raw materials and sent to a bending machine for bending and shaping. After the staff installs the upper plate frame 1 and the lower plate frame 2, they wait for the laying work of the electric heating elements.

[0029] The main heating element of this assembled electric heating plate device is the PTC chip 3 installed on the inner sides of the upper plate frame 1 and the lower plate frame 2. The PTC chip 3 has overvoltage protection function. When the voltage in the circuit exceeds its rated voltage, the PTC chip 3 will quickly respond and disconnect the circuit, thus preventing the circuit from being damaged by overvoltage. Secondly, the PTC chip 3 can also provide overcurrent protection. When the current exceeds the rated current of the PTC chip 3, it will also disconnect the circuit, effectively avoiding damage to the circuit due to overcurrent;

[0030] The PTC chip 3 also has temperature protection function. When the ambient temperature rises to a certain extent, the PTC chip 3 will automatically disconnect the circuit to prevent the circuit from being damaged by high temperature. In addition to the above functions, the PTC chip 3 can also automatically adjust the output power according to the load condition of the circuit. When the load in the circuit exceeds its rated load, the PTC chip 3 will disconnect the circuit to protect the circuit from damage. This function enables the PTC chip 3 to play a key role when the circuit load is abnormal and protects the safe operation of the circuit. Finally, the PTC chip 3 can also provide a constant current output to ensure that the circuit maintains a stable current value during operation, which helps to improve the working efficiency of the circuit and extend its service life.

[0031] In the second step, during installation, unlock the lock catch 8 of the upper plate frame 1 and the lower plate frame 2, paste the PTC chip 3 at the bottom end of the inner side of the lower plate frame 2, insert the support foot assembly into the support foot slot 4, and use the edge pressing plate 503 to press the two edges of the PTC chip 3 tightly to prevent the PTC chip 3 from warping and falling off during use;

[0032] In the third step, pass the connecting wire of the PTC chip 3 through the installation slot 502 of the support foot assembly and carry out wiring and fixing;

[0033] In the fourth step, close the lower plate frame 2 and lock it tightly, take out the reflective film 6 and insert it into the placement space 702 of the positioning assembly, and operate the adjusting lever 704 on the edge of the support frame 701 to make the adjusting lever 704 move down in the adjusting sleeve 703, and the pressing strip 705 tightly presses the reflective film 6, so that the electric heating plate has uniform heat dissipation and good heat preservation effect. Moreover, in this assembly method, when the reflective film 6 is wrinkled or damaged, it can be quickly restored to its original state.

[0034] Through the above steps, by adopting the opening and closing design of the upper plate frame 1 and the lower plate frame 2, it is convenient to open for internal installation and maintenance. By inserting the support foot assembly into the support foot slot 4, not only can the edge pressing plate 503 press the two edges of the PTC chip 3 tightly to prevent the PTC chip 3 from warping and falling off during use, but also the connecting wire of the PTC chip 3 can be orderly planned and positioned. Through the positioning assembly, the reflective film 6 can be pressed and positioned, and when the reflective film 6 is wrinkled or damaged, it can be quickly restored to its original state.

Claims

1. An assembled electric heating plate device, comprising an upper plate frame (1); characterized in that: The invention also comprises a lower plate frame (2), a PTC sheet (3), a support foot assembly, a reflective film (6) and a positioning assembly; the lower end of the upper plate frame (1) is hingedly connected to the lower plate frame (2); the PTC sheet (3) is pasted to the inner bottom end of the lower plate frame (2); support foot grooves (4) are provided at the four corners of the inner side of the lower plate frame (2); the inner side of the support foot groove (4) is engaged with a support foot assembly for positioning the PTC sheet (3) and the connecting line of the PTC sheet (3); the support foot assembly comprises a support foot installation frame (501), a installation groove (502) and an edge pressure plate (503); the inner side of the support foot installation frame (501) close to the PTC sheet (3) is provided with a installation groove (502) for guiding the connecting line of the PTC sheet (3); the support foot installation frame (501) is close to the PTC sheet (3) and is provided with a support foot assembly for positioning the PTC sheet (3). An edge pressing plate (503) for pressing the edges of both sides of the PTC sheet (3) is fixedly connected near one end of the PTC sheet (3); a reflective film (6) is placed on the upper end of the lower plate frame (2); a positioning component for pressing the reflective film (6) is fixedly connected to the upper end of the edge of the lower plate frame (2); the positioning component comprises a support frame (701), a placement space (702), an adjustment sleeve (703), an adjustment pressure rod (704) and a pressure strip (705); a placement space (702) is provided inside the support frame (701); the upper end of the support frame (701) is fixedly connected with the adjustment sleeve (703); the inner side of the adjustment sleeve (703) is threadedly connected with the adjustment pressure rod (704); the lower end of the adjustment pressure rod (704) is bearing-connected with the pressure strip (705).

2. The assembled electric heating plate device according to claim 1, characterized in that: Lock buckles (8) are installed at the front ends of the lower plate frame (2) and the upper plate frame (1); the lock buckles (8) are inserted and connected with adjacent lock buckles (8).

3. The assembled electric heating plate device according to claim 1, characterized in that: The support leg assembly also includes a sealing limit strip (504); the outer side of the support leg installation frame (501) is fixedly connected with a sealing limit strip (504) for increasing the sealing degree and firmness of the support leg assembly after it is installed in the support leg groove (4); the sealing limit strips (504) are provided in two groups and are symmetrically distributed up and down.

4. The assembled electric heating plate device according to claim 1, characterized in that: The upper end surface of the lower plate frame (2) is provided with a through groove (9) which is beneficial to heat transmission.

5. The assembled electric heating plate device according to claim 1, characterized in that: The opening end of the positioning component is the front end; the positioning component is located outside the reflective film (6).

6. The assembled electric heating plate device according to claim 1, characterized in that: The positioning assembly also includes a telescopic spring (706); a telescopic spring (706) is arranged on the outer side of the adjustment sleeve (703) at the upper end of the support frame (701).

7. The assembled electric heating plate device according to claim 6, characterized in that: The adjusting sleeve (703), the adjusting pressure rod (704), the pressure strip (705) and the telescopic spring (706) are all provided in four groups; the adjusting sleeve (703), the adjusting pressure rod (704), the pressure strip (705) and the telescopic spring (706) are installed at the front and rear ends and the left and right ends of the supporting frame (701).

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