A toilet seat with adjustable seat ring size

Abstract

The present invention belongs to the technical field of toilets, and specifically relates to a toilet seat with an adjustable seat ring size. The technical solution is as follows: a toilet seat with an adjustable seat ring size comprises an upper seat, a middle seat, and a lower seat connected in sequence, wherein the middle seat is internally connected to a plurality of seat retractable mechanisms; the seat retractable mechanisms comprise a transmission rod, a telescopic plate, and at least two steering heads, the steering heads being hingedly connected to the middle seat, the steering heads being provided with a transmission chute, a transmission slider fixed to the transmission rod, and the transmission slider being mounted within the transmission chute; a pull slider is also fixed to the steering heads, a pull chute is provided on the telescopic plate, the pull slider is mounted within the pull chute, the telescopic plate is mounted within the middle seat, and a handle is fixed to the transmission plate. The present invention provides a toilet seat with an adjustable seat ring size to accommodate users of different body shapes.

Description

Technical Field

[0001] The invention belongs to the technical field of toilets, and in particular relates to a toilet seat with an adjustable seat ring size. Background Art

[0002] Toilets are products in the field of daily sanitary ware, and existing toilet seat covers are mostly made of ceramics.

[0003] Patent application number CN201621317253.2 discloses a toilet with a replaceable toilet trap. The toilet comprises a toilet body, a base toilet ring, a left half ring, a right half ring, a toilet lid, a water tank, a right toilet trap groove, a left toilet trap groove, a first fixing screw, a second fixing screw, and a spring. The base toilet ring is disposed above the toilet body, and a split toilet ring is disposed on the base toilet ring. The split toilet ring consists of a left half ring and a right half ring. The left half ring is fixed to the base toilet ring by a first fixing screw. A spring is disposed between the left and right half rings. The split toilet ring is provided with a toilet lid. The water tank is disposed behind the toilet body. The toilet body also has a right toilet trap groove and a left toilet trap groove, and the right toilet trap groove and the left toilet trap groove are aligned with the right and left half rings, respectively. The toilet product of the present invention can be quickly covered with a disposable toilet seat, and is easy to use.

[0004] However, the rim size of the aforementioned toilets cannot be adjusted. Children are smaller, and using a toilet with an unadjustable rim can pose a safety hazard. Furthermore, since everyone's body shape varies, using a toilet with the same rim size can make it difficult to ensure user comfort. Summary of the Invention

[0005] In order to solve the above problems existing in the prior art, the present invention aims to provide a toilet seat with an adjustable seat ring size to accommodate users of different body shapes.

[0006] The technical solution adopted in the present invention is:

[0007] A toilet seat with an adjustable seat ring size comprises an upper seat, a middle seat and a lower seat connected in sequence, wherein the middle seat is connected with several groups of seat telescopic mechanisms; the seat telescopic mechanisms comprise a transmission rod, a telescopic plate and at least two steering heads, the steering heads are hinged in the middle seat, a transmission slide is provided on the steering heads, a transmission slider is fixed on the transmission rod, and the transmission slider is sleeved in the transmission slide; a pulling slider is also fixed on the steering heads, a pulling slide is provided on the telescopic plate, the pulling slider is sleeved in the pulling slide, the telescopic plate is sleeved in the middle seat, and a handle is fixed on the transmission plate.

[0008] Preferably, there are two seat plate telescopic mechanisms, and the two telescopic plates are arranged on both sides of the circle of the middle seat plate. Linkage sliders are fixed on the two transmission rods. A connecting rod is hinged on the middle seat plate, and linkage slide grooves are provided at both ends of the connecting rod. The linkage slider is sleeved in the linkage slide groove, and the steering heads on both sides of the circle of the middle seat plate have the same installation direction.

[0009] Preferably, a driving mechanism for driving the transmission rod to move linearly is installed in the middle seat plate.

[0010] Preferably, the driving mechanism includes a telescopic motor, which is installed in the middle seat plate. The output shaft of the telescopic motor is connected to a driving gear, which is engaged with a reduction gear. The reduction gear is installed in the middle seat plate. A rack is provided on the transmission rod, and the reduction gear is engaged with the rack.

[0011] Preferably, a travel switch is further installed in the middle seat plate, the travel switch is electrically connected to the drive mechanism, and the travel switch is located next to the end of the transmission rod.

[0012] Preferably, a hot air drying mechanism is installed in the middle seat plate; the hot air drying mechanism includes a fan, the fan is installed in the middle seat plate, the air outlet of the fan is connected to a cover body, a heating plate is installed in the cover body, and a plurality of cover plates are hinged at one end of the cover body away from the fan.

[0013] Preferably, a water spray cleaning mechanism is installed in the middle seat plate.

[0014] Preferably, the water spray cleaning mechanism includes a flow control valve, a temperature controller, a water distribution controller, and a cleaning nozzle connected in sequence through pipes, and the flow control valve, the temperature controller, the water distribution controller, and the cleaning nozzle are all installed in the middle seat plate.

[0015] Preferably, a seat flipping mechanism is also installed in the middle seat plate; the seat flipping mechanism includes a flipping motor, which is installed in the middle seat plate, and the output shaft of the flipping motor is connected to a damper, and the middle seat plate is connected to a rotating shaft for connecting to the toilet box, and the other end of the damper is connected to the rotating shaft of the middle seat plate.

[0016] Preferably, a seat heating coil is installed in the upper seat plate, and a temperature sensing element is also installed in the upper seat plate.

[0017] The beneficial effects of the present invention are:

[0018] 1. The center seat panel of the present invention is hinged with a steering head. When the transmission rod is moved by the handle, the transmission slider slides in the transmission chute and drives the steering head to rotate. When the steering head rotates, the pull slider slides in the pull chute and drives the telescopic plate to move laterally. Therefore, by moving the transmission rod, the position of the telescopic plate is adjusted accordingly, so that the size of the seat opening left by the telescopic plate can be adjusted, which is convenient for people of different body shapes, improves user comfort, and ensures safety. There are at least two rotating heads between the telescopic plate and the transmission rod. When the transmission rod is moved, several steering heads tilt simultaneously, and various parts of the telescopic rod are pulled synchronously, ensuring that the telescopic plate can move laterally accurately.

[0019] 2. The linkage sliders on the two drive rods are respectively mounted within the two linkage slots of the connecting rod. When only one drive rod is driven to move, the other drive rod also moves linearly through the transmission of the connecting rod. The two drive rods move in opposite directions, while the left and right steering heads are installed in the same direction. This allows the two telescopic plates to move in opposite directions, bringing them closer or farther apart, achieving adjustment of the seat opening size. Operation is convenient and reliable.

[0020] 3. The drive mechanism can drive the transmission rod to move, and the movement of the telescopic plate can be automatically controlled. By activating the drive mechanism, the transmission rod moves, the transmission rod pulls the steering head to rotate, and the steering head pulls the telescopic plate to move horizontally, thus facilitating the automatic adjustment of the telescopic plate and further simplifying the operation.

[0021] 4. After the telescopic motor is activated, it drives the driving gear, which in turn drives the reduction gear. The reduction gear rotates, driving the rack on the transmission rod, which in turn moves the transmission rod. The movement of the transmission rod pulls the steering head, which in turn pulls the telescopic plate. Controlling the telescopic motor controls the movement of the telescopic plate, automatically adjusting the seat opening for easy operation.

[0022] 5. A travel switch is provided next to the end of the transmission rod. When the movement of the transmission rod is controlled by the driving mechanism, the driving mechanism can automatically stop after the end of the transmission rod touches the travel switch, avoiding the situation where the driving mechanism is still working when the telescopic plate moves to the extreme position, thereby ensuring the safe use of the driving mechanism.

[0023] 6. The hot air drying mechanism dries the user's buttocks with hot air at the appropriate temperature, eliminating the need to wipe the buttocks with a paper towel and improving user comfort. The heating plate heats the surrounding air, and the fan blows the hot air out through the gaps between the cover panels, drying the user's buttocks for ease of use. Several cover panels are hinged to the cover body, allowing for easy adjustment of the airflow direction.

[0024] 7. The water spray cleaning mechanism can spray water to clean the user's buttocks, avoiding the trouble of manual washing or wiping with a paper towel, further simplifying the user's operation and improving the user's comfort.

[0025] 8. The cleaning nozzle sprays water towards the user's buttocks, ensuring automatic cleaning. The flow control valve controls the water flow to ensure the appropriate amount of water. The temperature controller controls the water temperature to ensure the appropriate water temperature, improving the comfort of the user during washing.

[0026] 9. After the tilt motor is started, it drives the damper to move, which in turn drives the middle seat to flip, and the entire toilet seat flips together. When the seat is finished using, the seat flip mechanism can automatically drive the seat to flip up, eliminating the trouble of manual flipping.

[0027] 10. The temperature sensing unit senses the temperature of the upper seat panel. If the upper seat panel is too cold, the seat heating coil heats it to ensure the appropriate temperature. The seat panel is heated to the user's desired temperature, enhancing user comfort.

[0028] The beneficial effects of the present invention are not limited to this description. For better understanding, a more detailed description is given in the specific implementation section.

[0029] Additional advantages, objects, and features of the present invention will be set forth in part in the following description and will in part become apparent to those skilled in the art upon examination of the following or may be learned by practice of the present invention. The objects and other advantages of the present invention may be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as in the accompanying drawings.

[0030] Those skilled in the art will understand that the purposes and advantages that can be achieved by the present invention are not limited to the above specific descriptions, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 is an exploded view of the present invention;

[0034] Figure 3 It is a structural diagram of the middle seat plate;

[0035] Figure 4 This is an exploded view of the middle seat plate;

[0036] Figure 5 It is a structural diagram of the seat plate telescopic mechanism;

[0037] Figure 6 This is an exploded view of the seat retractable mechanism;

[0038] Figure 7 It is an exploded view of the hot air drying mechanism;

[0039] Figure 8 It is a structural diagram of the water spray cleaning mechanism;

[0040] Figure 9 It is a structural diagram of the seat flipping mechanism;

[0041] Figure 10 This is an exploded view of the upper seat.

[0042] In the figure: 1-upper seat; 2-middle seat; 3-lower seat; 4-seat telescopic mechanism; 5-driving mechanism; 6-hot air drying mechanism; 7-water spray cleaning mechanism; 8-seat flipping mechanism; 11-seat heating coil; 12-temperature sensing element; 41-transmission rod; 42-telescopic plate; 43-steering head; 44-handle; 45-connecting rod; 51-telescopic motor; 52-driving gear; 53-reduction gear; 54-travel switch; 61-fan; 62-cover; 63-heating plate; 64-cover; 71-flow control valve; 72-temperature controller; 73-water distribution controller; 74-cleaning nozzle; 81-flipping motor; 82-damper; 411-transmission slider; 412-linkage slider; 413-rack; 421-pull chute; 431-transmission chute; 432-pull slider; 451-linkage chute. DETAILED DESCRIPTION

[0043] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0044] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0045] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] like Figures 1 to 6 As shown, the toilet seat of this embodiment includes an upper seat 1, a middle seat 2 and a lower seat 3 connected in sequence, and several groups of seat telescopic mechanisms 4 are connected in the middle seat 2; the seat telescopic mechanism 4 includes a transmission rod 41, a telescopic plate 42 and at least two steering heads 43, the steering head 43 is hinged in the middle seat 2, a transmission slide 431 is provided on the steering head 43, a transmission slider 411 is fixed on the transmission rod 41, and the transmission slider 411 is sleeved in the transmission slide 431; a pulling slider 432 is also fixed on the steering head 43, a pulling slide 421 is provided on the telescopic plate 42, the pulling slider 432 is sleeved in the pulling slide 421, the telescopic plate 42 is sleeved in the middle seat 2, and a handle 44 is fixed on the transmission plate.

[0047] The center seat panel 2 of the present invention is hinged with a steering head 43. When the transmission rod 41 is moved by the handle 44, the transmission slider 411 slides within the transmission slot 431 and drives the steering head 43 to rotate. When the steering head 43 rotates, the pull slider 432 slides within the pull slot 421 and drives the telescopic plate 42 to move laterally. Therefore, by moving the transmission rod 41, the position of the telescopic plate 42 is adjusted accordingly, so that the size of the seat opening left by the telescopic plate 42 can be adjusted, making it easier for people of different body shapes to use, improving user comfort, and ensuring safety. The number of rotating heads between the telescopic plate 42 and the transmission rod 41 is at least two. When the transmission rod 41 is moved, several steering heads 43 tilt simultaneously, and various parts of the telescopic rod are pulled synchronously, ensuring that the telescopic plate 42 can accurately move laterally.

[0048] Furthermore, Figure 5 and Figure 6As shown, there are two seat plate telescopic mechanisms 4, two telescopic plates 42 are arranged on both sides of the circle of the middle seat plate 2, and linkage sliders 412 are fixed on the two transmission rods 41. A connecting rod 45 is hinged on the middle seat plate 2, and linkage slide grooves 451 are provided at both ends of the connecting rod 45. The linkage slider 412 is sleeved in the linkage slide groove 451, and the steering heads 43 on both sides of the circle of the middle seat plate 2 are installed in the same direction.

[0049] The linkage sliders 412 on the two transmission rods 41 are respectively mounted within the two linkage slots 451 of the connecting rod 45. Therefore, when only one transmission rod 41 is driven to move, the other transmission rod 41 also moves linearly through the transmission of the connecting rod 45. The two transmission rods 41 move in opposite directions, while the left and right steering heads 43 are installed in the same direction. This allows the two telescopic plates 42 to move in opposite directions, bringing them closer together or farther apart, thereby adjusting the size of the seat opening, providing convenient and reliable operation.

[0050] like Figure 4 As shown, to reduce manual operation, a drive mechanism 5 is installed within the center seat plate 2 for driving the linear movement of a transmission rod 41. This mechanism can automatically control the movement of the telescopic plate 42 by driving the transmission rod 41. By activating the drive mechanism 5, the transmission rod 41 moves, which in turn rotates the steering head 43, which in turn pulls the telescopic plate 42 laterally. This facilitates automatic adjustment of the telescopic plate 42 and further simplifies operation.

[0051] The drive mechanism 5 includes a telescopic motor 51, which is installed in the middle seat plate 2. The output shaft of the telescopic motor 51 is connected to a driving gear 52, which is engaged with a reduction gear 53. The reduction gear 53 is installed in the middle seat plate 2. A rack 413 is provided on the transmission rod 41, and the reduction gear 53 is engaged with the rack 413. After the telescopic motor 51 is started, the telescopic motor 51 drives the driving gear 52 to rotate, and the driving gear 52 drives the reduction gear 53 to rotate. When the reduction gear 53 rotates, it drives the rack 413 on the transmission rod 41, and the transmission rod 41 can move accordingly. When the transmission rod 41 moves, it pulls the steering head 43 to rotate, and the steering head 43 pulls the telescopic plate 42 to move. Therefore, by controlling the telescopic motor 51, the movement of the telescopic plate 42 can be controlled, thereby automatically adjusting the size of the seat plate ring, which is easy to operate.

[0052] Furthermore, a travel switch 54 is installed in the middle seat plate 2. The travel switch 54 is electrically connected to the drive mechanism 5 and is located near the end of the transmission rod 41. The travel switch 54 is provided near the end of the transmission rod 41. When the movement of the transmission rod 41 is controlled by the drive mechanism 5, the drive mechanism 5 automatically stops when the end of the transmission rod 41 touches the travel switch 54. This prevents the drive mechanism 5 from continuing to operate when the telescopic plate 42 moves to the extreme position, thereby ensuring the safe use of the drive mechanism 5.

[0053] like Figure 7 As shown, the present invention also has a hot air drying function. A hot air drying mechanism 6 is installed in the middle seat plate 2; the hot air drying mechanism 6 includes a fan 61, which is installed in the middle seat plate 2. The air outlet of the fan 61 is connected to a cover body 62, and a heating plate 63 is installed in the cover body 62. The end of the cover body 62 away from the fan 61 is hinged to a plurality of cover plates 64. The hot air drying mechanism 6 can dry the user's buttocks with hot air of appropriate temperature according to the needs of the user, avoiding the trouble of the user having to wipe the buttocks with a paper towel, thereby improving the user's comfort. The heating plate 63 can heat the surrounding air, and the fan 61 blows the hot air out from the gap between the cover plates 64, so that the user's buttocks can be dried, which is convenient to use. The plurality of cover plates 64 are hinged to the cover body 62 to facilitate the adjustment of the air outlet direction.

[0054] like Figure 8 As shown, the present invention can achieve automatic water spray cleaning. A water spray cleaning mechanism 7 is installed in the middle seat plate 2. The water spray cleaning mechanism 7 can spray water to clean the user's buttocks, eliminating the trouble of manual rinsing or wiping with a paper towel, further simplifying the user's operation and improving the user's comfort.

[0055] The water spray cleaning mechanism 7 comprises a flow control valve 71, a temperature controller 72, a water distribution controller 73, and a cleaning nozzle 74, which are sequentially connected by pipes. These valves are all mounted within the center seat 2. The cleaning nozzle 74 sprays water toward the user's buttocks, ensuring automatic cleaning. The flow control valve 71 controls the water flow rate, ensuring an appropriate amount of water. The temperature controller 72 controls the water temperature, ensuring an appropriate temperature and enhancing comfort during rinsing.

[0056] Furthermore, Figure 9 As shown, the middle seat panel 2 is also equipped with a seat flipping mechanism 8. This mechanism includes a flipping motor 81, which is mounted within the middle seat panel 2. The output shaft of the flipping motor 81 is connected to a damper 82. The middle seat panel 2 is connected to a rotating shaft for connecting to the toilet, and the other end of the damper 82 is connected to the rotating shaft of the middle seat panel 2. When the flipping motor 81 is activated, it drives the damper 82 to actuate, which in turn causes the middle seat panel 2 to flip, and the entire toilet seat to flip as well. When the seat is not used, the flipping mechanism 8 automatically flips the seat upward, eliminating the need for manual flipping.

[0057] Furthermore, Figure 10As shown, the upper seat panel 1 is equipped with a seat heating coil 11 and a temperature sensing element 12. The temperature sensing element senses the temperature of the upper seat panel 1. When the upper seat panel 1 is cold, the seat heating coil 11 heats the upper seat panel 1 to ensure a suitable temperature. This allows the seat panel to be heated to a desired temperature based on the user's needs, improving user comfort.

[0058] Working principle:

[0059] The seat retractable mechanism 4 enables the seat opening of the upper seat 1 to be enlarged or reduced. Pushing the handle 44 forward or backward along the seat edge causes the transmission rod 41 connected to it to move accordingly. This transmission rod 41 pushes the other transmission rod 41 via a connecting rod 45. Alternatively, the telescopic motor 51 can be activated, which pushes one transmission rod 41 via a reduction gear 53. This transmission rod 41 then pushes the other transmission rod 41 via a connecting rod 45. Simultaneously, the two steering heads 43 connected to the left transmission rod 41 and the two steering heads 43 connected to the right transmission rod 41 rotate accordingly, converting linear motion into rotational motion. The steering heads push the two telescopic plates 42 toward or away from each other, and the steering heads 43 convert the rotational motion into linear motion of the telescopic plates 42. Changing the position of the two telescopic plates 42 adjusts the size of the seat opening of the upper seat 1 to accommodate different users.

[0060] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that falls within the scope defined by the claims of the present invention falls within the scope of protection of the present invention.

Claims

1. A toilet seat with an adjustable seat opening, characterized in that: The invention relates to a bicycle comprising an upper seat plate (1), a middle seat plate (2) and a lower seat plate (3) connected in sequence, wherein the middle seat plate (2) is connected with a plurality of seat plate telescopic mechanisms (4); the seat plate telescopic mechanisms (4) comprise a transmission rod (41), a telescopic plate (42) and at least two steering heads (43); the steering heads (43) are hinged in the middle seat plate (2); a transmission slide groove (431) is provided on the steering heads (43); a transmission slider (411) is fixed on the transmission rod (41); the transmission slider (411) is sleeved in the transmission slide groove (431); a pulling slider (432) is also fixed on the steering heads (43); a pulling slide groove (421) is provided on the telescopic plate (42); the pulling slider (432) is sleeved in the pulling slide groove (421); the telescopic plate (42) is sleeved in the middle seat plate (2); and a handle (44) is fixed on the transmission rod (41).

2. A toilet seat with an adjustable seat opening according to claim 1, characterized in that: The number of the seat plate telescopic mechanism (4) is two, and the two telescopic plates (42) are respectively arranged on both sides of the circle of the middle seat plate (2). A linkage slider (412) is fixed on each of the two transmission rods (41). A connecting rod (45) is hinged on the middle seat plate (2). Both ends of the connecting rod (45) are provided with a linkage slide groove (451). The linkage slider (412) is sleeved in the linkage slide groove (451). The steering heads (43) on both sides of the circle of the middle seat plate (2) are installed in the same direction.

3. The toilet seat with adjustable seat opening according to claim 1, characterized in that: A driving mechanism (5) for driving a transmission rod (41) to move linearly is installed in the middle seat plate (2).

4. A toilet seat with an adjustable seat opening according to claim 3, characterized in that: The driving mechanism (5) includes a telescopic motor (51), which is installed in the middle seat plate (2). The output shaft of the telescopic motor (51) is connected to a driving gear (52), which is meshed with a reduction gear (53), which is installed in the middle seat plate (2). A rack (413) is provided on the transmission rod (41), and the reduction gear (53) is meshed with the rack (413).

5. The toilet seat with adjustable seat opening according to claim 3, characterized in that: A travel switch (54) is also installed in the middle seat plate (2). The travel switch (54) is electrically connected to the driving mechanism (5). The travel switch (54) is located next to the end of the transmission rod (41).

6. The toilet seat with adjustable seat opening according to claim 1, characterized in that: A hot air drying mechanism (6) is installed in the middle seat plate (2); the hot air drying mechanism (6) includes a fan (61), the fan (61) is installed in the middle seat plate (2), the air outlet of the fan (61) is connected to a cover body (62), a heating plate (63) is installed in the cover body (62), and a plurality of cover plates (64) are hinged to one end of the cover body (62) away from the fan (61).

7. The toilet seat with adjustable seat opening according to claim 1, characterized in that: A water spray cleaning mechanism (7) is installed in the middle seat plate (2).

8. The toilet seat with adjustable seat opening according to claim 7, characterized in that: The water spray cleaning mechanism (7) comprises a flow control valve (71), a temperature controller (72), a water distribution controller (73), and a cleaning nozzle (74) which are sequentially connected through pipelines. The flow control valve (71), the temperature controller (72), the water distribution controller (73), and the cleaning nozzle (74) are all installed in the middle seat plate (2).

9. The toilet seat with adjustable seat opening according to claim 1, characterized in that: A seat flipping mechanism (8) is also installed in the middle seat plate (2); the seat flipping mechanism (8) includes a flipping motor (81), which is installed in the middle seat plate (2); the output shaft of the flipping motor (81) is connected to a damper (82); a rotating shaft for connecting to a toilet box is connected to the middle seat plate (2); the other end of the damper (82) is connected to the rotating shaft of the middle seat plate (2).

10. A toilet seat with an adjustable seat opening according to any one of claims 1 to 9, characterized in that: A seat heating coil (11) is installed in the upper seat plate (1), and a temperature sensing element (12) is also installed in the upper seat plate (1).

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