Heating seat ring and intelligent cover plate

Abstract

The utility model discloses a heating seat ring and intelligent cover plate, the heating seat ring comprises a seat ring upper shell, a heating film and a seat ring lower shell, the seat ring upper shell is provided with a cavity enclosed by side plates, the cavity is provided with an upper opening and a side opening, a film body of the heating film is provided with a protruding part, the protruding part extends into the cavity through the side opening, and the heating film is arranged in the cavity. A sealing plate used for sealing the side opening is arranged on the side opening, and a temperature fuse is arranged in the cavity and tightly attached to the protruding part. The protruding part of the heating film is arranged in the cavity, the temperature fuse is installed after injection molding is completed, the protruding part of the heating film is communicated with the heating wire of the whole heating film, and therefore the temperature fuse can effectively sense the heating temperature of the heating film in the seat ring, and the situation that the temperature fuse is fused due to the high temperature of secondary injection molding can be avoided; the temperature of the heating film can be effectively sensed, the heating film is intact and not damaged during injection molding, and potential safety hazards are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of toilet seats, in particular to a heating seat ring and an intelligent cover plate. Background Art

[0002] The existing heating seat rings based on two-shot injection molding generally use the two-shot injection process to sandwich heating devices such as heating wires and heating films in the middle and inject them into a whole. The appearance is simple and beautiful, without defects such as overflow slag and large weld seams caused by processes such as welding.

[0003] For safety reasons, the heating device must be equipped with a thermal fuse to prevent the seat ring from reaching an abnormal high temperature and scalding the human body or even causing a fire. However, since the heating device of the two-shot injection seat ring is sandwiched in the middle during the two-shot injection process, the high temperature during injection reaches about 200°C, while the melting temperature of the thermal fuse is about 70°C. Therefore, the thermal fuse must be installed after the two-shot injection is completed, and the thermal fuse must be close to the heating wire to accurately sense the temperature. However, the installation of the thermal fuse has certain difficulties: 1. If it is placed together with the heating wire, it is obvious that the fuse will melt during injection; 2. If the thermal fuse is installed after the injection is completed, the fuse cannot be directly close to the heating wire because the heating wire is exposed outside the seat ring and cannot be effectively sealed during the two-shot injection, resulting in glue overflow. Especially in the case where the heating device uses a heating film, the heating film needs to be exposed. Although the mold can support the heating film during the second injection, the opening is not completely sealed around, and the heating film at the surrounding gaps needs to bear a large injection pressure, which may cause the heating film to be shot and the internal heating wire to break, etc., posing a safety hazard during use; 3. If the thermal fuse senses the temperature of the heating device through the temperature transmitted by the plastic part after the two-shot injection is completed, there will be a large error and a safety hazard. That is to say, the entire heating device is encapsulated in the two-shot injection housing, leaving only two wires for power connection. Although this can solve the problem of glue leakage and overflow in the two-shot injection, the thermal fuse can only be closely attached to the surface of the plastic shell and indirectly sense the heating temperature of the heating device, which may cause the internal temperature of the heating device to be too high, while the transmitted temperature does not reach the melting limit, resulting in danger, scalding the human body or even worse results. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the above technical problems in the related art to a certain extent. For this reason, the utility model provides a heating seat ring to solve the effective installation problem of the thermal fuse of the two-shot injection seat ring, which can not only avoid the melting of the thermal fuse caused by the high temperature of the two-shot injection, but also effectively sense the temperature of the heating film, and can ensure that the heating film is intact and not damaged during injection, improving safety.

[0005] To achieve the above object, the technical solution of the utility model is as follows:

[0006] The present utility model also provides an intelligent cover plate with the above-mentioned heating seat ring.

[0007] According to the heating seat ring of the first aspect embodiment of the present utility model, it includes an upper seat ring housing, a heating film, and a lower seat ring housing. The upper seat ring housing and the lower seat ring housing are integrally formed and connected. The heating film is sandwiched between the upper seat ring housing and the lower seat ring housing and the heating film is attached to the upper seat ring housing. A cavity surrounded by side plates is provided on the upper seat ring housing. The cavity has an upper opening and a side opening. The side plates are integrally formed with the upper seat ring housing. The film body of the heating film has a protruding portion. The protruding portion extends into the cavity through the side opening. A sealing plate for sealing the side opening is provided on the side opening. The bottom of the sealing plate closely adheres to the heating film. A temperature fuse is provided in the cavity. The temperature fuse closely adheres to the protruding portion. The temperature fuse is electrically connected to the power supply circuit of the heating film.

[0008] The heating seat ring according to the embodiment of the present utility model has at least the following beneficial effects:

[0009] 1. Before the second injection molding of the present utility model, the protruding portion of the heating film is first attached in the cavity, and then the sealing plate is installed to ensure that the bottom of the sealing plate closely adheres to the heating film, avoiding the problem of glue leakage and overflow during the second injection molding. After the second injection molding is completed, the sealing plate, the upper seat ring housing, and the lower seat ring housing form a whole and form an independent cavity. The protruding portion of the heating film is built in the cavity. After the injection molding is completed, the temperature fuse is installed to make the temperature fuse closely adhere to the protruding portion. Since the protruding portion of the heating film is connected to the heating wire of the entire heating film, the temperature fuse can effectively sense the heating temperature of the heating film inside the seat ring, improving safety.

[0010] 2. The present utility model can ensure the appearance integrity of the seat ring. Since it is the second injection molding, there is no problem of dimensional deviation between the upper and lower seat ring shells, nor appearance defects such as slag overflow, uneven welds, and unevenness in welding. It can solve the effective installation problem of the temperature fuse, which can not only avoid the temperature fuse from being melted due to the high temperature of the second injection molding, but also effectively sense the temperature of the heating film, and can ensure that the heating film is intact and not damaged during injection molding, avoiding potential safety hazards. In addition, other electrical components can be added in the cavity without the need for high-temperature resistant materials, which can effectively save costs, has a simple structure, is easy to implement, and has good effects.

[0011] According to some embodiments of the present utility model, a PCB board is provided in the cavity. The temperature fuse is electrically connected to the PCB board.

[0012] According to some embodiments of the present utility model, an integrated wire harness is further included. The integrated wire harness includes a first power line, a second power line, and a first fixing wire clip. One end of the first power line is electrically connected to the heating film, and the other end passes through the first fixing wire clip and is electrically connected to the PCB board. One end of the second power line passes out of the upper housing of the seat ring through the side wall of the upper housing of the seat ring, and the other end passes through the first fixing wire clip and is electrically connected to the PCB board. The first fixing wire clip is fixedly installed at the side opening.

[0013] According to some embodiments of the present utility model, a horizontal first card slot is formed on the surface of the upper housing of the seat ring. The first card slot is located at the side opening. Vertical second card slots are formed on the side plates on both sides of the side opening. The first card slot is connected to one of the second card slots to form an L-shaped slot. The four peripheral edges of the first fixing wire clip have first convex edges. The first fixing wire clip is clamped on the L-shaped slot through the first convex edges. Both sides of the sealing plate have second convex edges, and a notch is cut on the sealing plate. The size of the notch matches that of the first fixing wire clip. A third card slot is formed on the side wall of the notch. The sealing plate is clamped on the second card slot through the second convex edges to close the side opening, and at the same time, the third card slot is clamped with the first convex edge.

[0014] According to some embodiments of the present utility model, the second convex edge has a stepped structure with a larger upper part and a smaller lower part. Correspondingly, the second card slot has a stepped structure with a deeper upper part and a shallower lower part. The second convex edge cooperates with the second card slot.

[0015] According to some embodiments of the present utility model, a patch is pasted at the junction of the sealing plate and the protruding part to seal the gap between the bottom of the sealing plate and the protruding part.

[0016] According to some embodiments of the present utility model, a temperature probe is provided in the cavity. The temperature probe is closely attached to the protruding part. The temperature probe is electrically connected to the PCB board.

[0017] According to some embodiments of the present utility model, a cover body is further included. The cover body covers the upper opening.

[0018] According to some embodiments of the present utility model, a partition is provided in the cavity. The partition encloses an independent space in the cavity, and screw mounting holes are provided in the space.

[0019] According to some embodiments of the present utility model, lamp beads are provided on the PCB board. The lamp beads are electrically connected to the temperature probe. Through holes are formed on the cover body, and the lamp beads pass through the through holes.

[0020] According to some embodiments of the present utility model, a waterproof rubber sleeve is sleeved on the lamp beads.

[0021] The intelligent cover plate according to the second aspect embodiment of the present utility model includes the heating seat ring.

[0022] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0024] Figure 1 is an overall exploded view of the heating seat ring of the present utility model;

[0025] Figure 2 is a partial top view of the heating seat ring of the present utility model;

[0026] Figure 3 is an installation schematic diagram of the sealing plate and the first fixing wire clip of the present utility model;

[0027] Figure 4 is a structural schematic diagram of the cover body and the PCB board of the present utility model.

[0028] Reference numerals: upper seat ring housing 100, side plate 110, second card slot 111, cavity 120, wire groove 130, first card slot 140, partition 150, screw mounting hole 151, heating film 200, protruding portion 210, lower seat ring housing 300, sealing plate 400, second convex edge 410, third card slot 420, temperature fuse 500, PCB board 600, lamp bead 610, waterproof rubber sleeve 611, integrated wire harness 700, first power cord 710, second power cord 720, first fixing wire clip 730, first convex edge 731, second fixing wire clip 740, temperature probe 800, cover body 900, buckle 910, patch 1000. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] Referring to Figures 1-4 , a heated seat ring, comprising an upper seat ring housing 100, a heating film 200 and a lower seat ring housing 300. The upper seat ring housing 100 and the lower seat ring housing 300 are integrally formed and connected. The heating film 200 is sandwiched between the upper seat ring housing 100 and the lower seat ring housing 300 and the heating film 200 is attached to the upper seat ring housing 100. A cavity 120 surrounded by side plates 110 is provided on the upper seat ring housing 100. The cavity 120 is located at the rear edge of the upper seat ring housing 100, close to the toilet lid hinge. The cavity 120 has an upper opening and a side opening. The side opening is located on the front side of the cavity 120. The side plates 110 are integrally formed with the upper seat ring housing 100. The film body of the heating film 200 has a protruding portion 210. The protruding portion 210 extends into the cavity 120 through the side opening. A sealing plate 400 for sealing the side opening is provided on the side opening. The bottom of the sealing plate 400 is closely attached to the heating film 200. A temperature fuse 500 is provided in the cavity 120. The temperature fuse 500 is closely attached to the protruding portion 210. The temperature fuse 500 is electrically connected to the power supply circuit of the heating film 200. The heating film 200 is a sheet-shaped heating film 200 with a very thin thickness of about 0.3 mm, which can effectively save the height space of the seat ring. The sealing plate 400 is used to seal the cavity 120, effectively preventing the problem of glue overflow during secondary injection molding.

[0032] In the present utility model, before secondary injection molding, the protruding portion 210 of the heating film 200 is first attached in the cavity 120, and then the sealing plate 400 is installed to ensure that the bottom of the sealing plate 400 is closely attached to the heating film 200, avoiding the problem of glue leakage and overflow during secondary injection molding. After the secondary injection molding is completed, the sealing plate 400, the upper seat ring housing 100 and the lower seat ring housing 300 form an integral body, and an independent cavity 120 is formed. The protruding portion 210 of the heating film 200 is built in the cavity 120. At this time, the temperature fuse 500 is installed to make the temperature fuse 500 closely attached to the protruding portion 210. Since the protruding portion 210 of the heating film 200 is connected to the heating wire of the entire heating film 200, the temperature fuse 500 can effectively sense the heating temperature of the heating film 200 inside the seat ring, improving safety.

[0033] In some embodiments of the utility model, a PCB board 600 is provided in the cavity 120, and the temperature fuse 500 is electrically connected to the PCB board 600. A control circuit is designed on the PCB board 600, and the temperature fuse 500 is welded on the PCB board 600 to protect the heating film 200 circuit and high temperature protection, and the circuit is cut off by melting when a certain set temperature is exceeded.

[0034] In some embodiments of the utility model, an integrated wiring harness 700 is also included. The integrated wiring harness 700 includes a first power line 710, a second power line 720 and a first fixed line clip 730. One end of the first power line 710 is electrically connected to the heating film 200, and the other end passes through the first fixed line clip 730 to be electrically connected to the PCB board 600. One end of the second power line 720 passes through the side wall of the seat ring upper shell 100 and passes through the first fixed line clip 730 to be electrically connected to the PCB board 600. The first fixed line clip 730 is fixed at the side opening. A second fixed line clip 740 is provided at one end of the second power line 720, and a wire groove 130 is opened at the edge of the seat ring upper shell 100. The integrated wiring harness 700 is installed before secondary injection molding, and the second fixed line clip 740 is installed in the wire groove 130. The wire groove 130 is sealed with glue to fix and prevent it from falling off, thereby ensuring the pulling force of the second power line 720. The first power line 710 and the second power line 720 are integrated on the first fixed line card 730 to facilitate sealing. The first power line 710 and the second power line 720 can be welded to the PCB board 600 or connected through terminals.

[0035] In some embodiments of the present invention, referring to Figure 3 A horizontal first card slot 140 is provided on the surface of the seat ring upper shell 100, and the first card slot 140 is located at the side opening. Vertical second card slots 111 are provided on the side panels 110 on the left and right sides of the side opening. The first card slot 140 is connected to one of the second card slots 111 to form an L-shaped slot. The edges around the first fixed line clip 730 have a first convex edge 731, and the first fixed line clip 730 is clamped on the L-shaped slot through the first convex edge 731. The left and right sides of the sealing plate 400 have a second convex edge 410, and a notch is cut on the sealing plate 400. The size of the notch matches the first fixed line clip 730. A third card slot 420 is provided on the side wall of the notch. The sealing plate 400 is clamped on the second card slot 111 through the second convex edge 410 to close the side opening, and the third card slot 420 is clamped with the first convex edge 731. The first card slot 140 , the second card slot 111 , the first convex edge 731 , the second convex edge 410 and other structures are all intended to increase the sealing of the overall structure and effectively prevent glue overflow and leakage.

[0036] In some embodiments of the present utility model, the second convex edge 410 has a stepped structure with a larger upper part and a smaller lower part. Correspondingly, the second card slot 111 has a stepped structure with a deeper upper part and a shallower lower part, and the second convex edge 410 cooperates with the second card slot 111. The stepped structure plays a limiting role to prevent the mold from pressing and breaking the heating wire of the heating film 200 under the sealing plate 400 when the sealing plate 400 is press-fitted.

[0037] In some embodiments of the present utility model, a patch 1000 is attached at the junction of the sealing plate 400 and the protruding part 210 to seal the gap between the bottom of the sealing plate 400 and the protruding part 210. The material of the patch 1000 can be an iron sheet, a cloth sheet, etc. The purpose is to strengthen the sealing effect at the junction of the sealing plate 400 and the heating film 200, so that the periphery of the sealing plate 400 fits tightly with the upper shell 100 of the seat ring, effectively preventing the problem of glue leakage during secondary injection molding.

[0038] In some embodiments of the present utility model, a temperature probe 800 is provided in the cavity 120. The temperature probe 800 is closely attached to the protruding part 210 and is electrically connected to the PCB board 600. The temperature probe 800 is an NTC temperature probe 800, and its connecting wire can be connected to the PCB board 600 through a terminal or by welding. Since the protruding part 210 of the heating film 200 is connected to the heating wire of the entire heating film 200, the temperature probe 800 can effectively feedback the heating temperature of the heating film 200 inside the seat ring. And because it is installed after the injection molding is completed, the NTC temperature probe 800 does not require high-temperature resistant materials, can be in various forms and styles, has strong general adaptability, and can effectively save costs.

[0039] In some embodiments of the present utility model, a cover body 900 is further included, and the cover body 900 covers the upper opening. The cover body 900 is fixed by a buckle 910 and screws, and the cover body 900 plays a role in waterproofing and beautifying. Further, steps are provided around the cover to prevent splashing water, and a sealing structure such as a sealing line can be added to further enhance the waterproof and moisture-proof effect.

[0040] In some embodiments of the present utility model, a partition 150 is provided in the cavity 120. The partition 150 encloses an independent space in the cavity 120, and a screw mounting hole 151 is provided in the space. The cavity 120 outside the partition 150 can be filled with glue to further protect the PCB board 600 and the circuit, making it safer to use, while the independent space where the screw mounting hole 151 is located will not be filled with glue, facilitating the installation of the cover body 900.

[0041] In some embodiments of the present utility model, a lamp bead 610 is provided on the PCB board 600. The lamp bead 610 is electrically connected to the temperature probe 800, and a through hole is opened on the cover body 900, and the lamp bead 610 passes through the through hole. The lamp bead 610 is used to display the heating temperature range.

[0042] In some embodiments of the present utility model, a waterproof rubber sleeve 611 is sleeved on the lamp bead 610. The waterproof rubber sleeve 611 plays a role in waterproofing and moisture-proofing for the lamp bead 610.

[0043] An intelligent cover plate includes the above-mentioned heating seat ring.

[0044] The above-mentioned heating seat ring is prepared by the following preparation method. A two-shot injection molding process is adopted, including the following steps:

[0045] S1: The upper seat ring shell 100 is produced by injection molding. The heating film 200 is pasted on the corresponding sunken curved surface part of the upper seat ring shell 100, and the protruding part 210 is pasted in the cavity 120. The integrated wire harness 700 is assembled. The first power cord 710 is used as the power output end, and the second power cord 720 is used as the power input end. The second fixed wire clip 740 is clamped in the wire groove 130 of the upper seat ring shell 100. One end of the first power cord 710 is riveted to the heating film 200, and the first fixed wire clip 730 is clamped in the L-shaped slot;

[0046] S2: The sealing plate 400 is snapped into the second card slot 111 to press and seal the first fixed wire clip 730, so that the side opening is completely closed, and the bottom of the sealing plate 400 is closely attached to the heating film 200;

[0047] S3: The upper seat ring shell 100 with the heating film 200 installed is subjected to two-shot injection molding to process the lower seat ring shell 300. After the two-shot injection molding is completed, the upper seat ring shell 100, the heating film 200, and the lower seat ring shell 300 are of an integral structure;

[0048] S4: After the two-shot injection molding is completed, the PCB board 600 is installed in the cavity 120. Components such as the temperature fuse 500, the NTC temperature probe 800, and the lamp bead 610 are already welded on the PCB board 600, and the temperature fuse 500 and the NTC temperature probe 800 are closely attached to the protruding part 210. Then, other circuits are connected well. Finally, the cover body 900 is covered and locked with screws.

[0049] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A heating seat ring, characterized in that: The invention comprises a seat ring upper shell (100), a heating film (200) and a seat ring lower shell (300), wherein the seat ring upper shell (100) and the seat ring lower shell (300) are integrally formed and connected, the heating film (200) is sandwiched between the seat ring upper shell (100) and the seat ring lower shell (300), and the heating film (200) is attached to the seat ring upper shell (100), and the seat ring upper shell (100) is provided with a cavity (120) surrounded by side plates (110), and the cavity (120) has an upper opening and a side opening, and the side plates (110) and the seat ring upper shell are connected. The body (100) is integrally formed, and the membrane body of the heating membrane (200) has a protrusion (210), and the protrusion (210) extends into the cavity (120) through the side opening. The side opening is provided with a sealing plate (400) for sealing the side opening, and the bottom of the sealing plate (400) is in close contact with the heating membrane (200). A temperature fuse (500) is provided in the cavity (120), and the temperature fuse (500) is in close contact with the protrusion (210). The temperature fuse (500) is electrically connected to the power supply circuit of the heating membrane (200).

2. The heating seat ring according to claim 1, characterized in that: A PCB board (600) is arranged in the cavity (120), and the temperature fuse (500) is electrically connected to the PCB board (600).

3. The heating seat ring according to claim 2, characterized in that: It also includes an integrated wiring harness (700), which includes a first power line (710), a second power line (720) and a first fixed line clip (730), one end of the first power line (710) is electrically connected to the heating film (200), and the other end passes through the first fixed line clip (730) to be electrically connected to the PCB board (600), one end of the second power line (720) passes through the side wall of the seat ring upper shell (100) and out of the seat ring upper shell (100), and the other end passes through the first fixed line clip (730) to be electrically connected to the PCB board (600), and the first fixed line clip (730) is fixed at the side opening.

4. The heating seat ring according to claim 3, characterized in that: A horizontal first card slot (140) is formed on the surface of the seat ring upper shell (100), the first card slot (140) is located at the side opening, vertical second card slots (111) are formed on the side plates (110) on both sides of the side opening, the first card slot (140) is connected to one of the second card slots (111) to form an L-shaped slot, the first fixing line clip (730) has a first convex edge (731) on the four edges thereof, and the first fixing line clip (730) is fixed by the first convex edge (731). The sealing plate (400) is clamped on the L-shaped slot, and both sides of the sealing plate (400) have second convex edges (410), and a notch is cut on the sealing plate (400), the size of the notch matches the first fixed line clamp (730), and a third clamping groove (420) is opened on the side wall of the notch. The sealing plate (400) is clamped on the second clamping groove (111) through the second convex edge (410) to close the side opening, and the third clamping groove (420) is clamped with the first convex edge (731).

5. The heating seat ring according to claim 4, characterized in that: The second convex edge (410) is in a stepped structure that is larger at the top and smaller at the bottom. Correspondingly, the second clamping groove (111) is in a stepped structure that is deeper at the top and shallower at the bottom. The second convex edge (410) matches the second clamping groove (111).

6. The heating seat ring according to claim 1, characterized in that: A patch (1000) is affixed to the junction of the sealing plate (400) and the protruding portion (210) to close the gap between the bottom of the sealing plate (400) and the protruding portion (210).

7. The heating seat ring according to claim 2, characterized in that: A temperature probe (800) is arranged in the cavity (120); the temperature probe (800) is tightly attached to the protruding portion (210); and the temperature probe (800) is electrically connected to the PCB board (600).

8. The heating seat ring according to claim 1, characterized in that: It also includes a cover body (900), wherein the cover body (900) covers the upper opening.

9. The heating seat ring according to claim 8, characterized in that: A partition (150) is provided in the cavity (120), and the partition (150) encloses an independent space in the cavity (120), and a screw installation hole (151) is provided in the space.

10. A smart cover, characterized in that: The heating seat ring comprises the heating seat ring according to any one of claims 1 to 9.

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