Electric kotatsu

Abstract

To provide an electric kotatsu that solves problems such as inconvenience in storage, reduced heating effect on a tabletop, and inconvenience in replacing a heating tube. [Solution] The device comprises a top plate 2 provided above and a frame with foldable movable legs 3 provided below, an electric heater 4 provided on the frame, the frame having fixed legs 11 and a support rod 12, and the electric heater attached to the support rod via a connecting rod 123. The electric heater comprises a base plate provided with a plurality of reflective covers, and heating tube mounting parts for mounting heating tubes are provided on both opposing ends of the reflective covers, and a heating tube insertion hole and a heating tube holding hole are formed as through holes opened in the heating tube mounting parts. Not only is it easy to attach and detach the electric heater, but the heating effect of the electric heater on the top plate is increased, and the movable legs can be quickly folded below the frame.

Description

[Technical field]

[0001] The present invention relates to the technical field of everyday heating products, and more particularly to an electric kotatsu. [Background technology]

[0002] As the quality of life improves, the trend of using heaters to keep the body warm when it's cold is on the rise. Electric kotatsu, which combines the functions of a table and a heater to make daily life more convenient, makes life more comfortable. For example, covering the electric kotatsu with a blanket keeps the lower half of the body warm, the warm top keeps food from getting cold during meals, and provides a warm place for families to gather or a warm study corner for students.

[0003] The patent document with the registration publication number CN211048739U discloses an electric kotatsu as follows: four support pillars are provided on the upper surface of the base at the four corners of the base, and an exhaust pipe is provided on the side wall of each support pillar, and the upper ends of the four support pillars are all connected to the electric kotatsu, and a control panel is provided on the upper surface of the electric kotatsu, which is connected to a controller installed inside the electric kotatsu, and a cooking stove is provided in the center of the upper surface of the electric kotatsu, and a fixed rod group is provided on the bottom of the electric kotatsu, and the bottom end of the fixed rod group is connected to a damping slide rail whose rear side is fixedly connected to a fixed frame. The above-mentioned technical solution has a fixed frame attached to the bottom of the electric kotatsu, and clothes and other items can be hung on the fixed frame to dry and warm the body, and the cooking stove installed on the surface of the electric kotatsu can be used for cooking, and has many functions to meet the needs of today's people.

[0004] However, the legs of the electric kotatsu based on the above-mentioned technical proposal cannot be folded, and in seasons when the temperature is high and there is no need to use the electric kotatsu, storing the electric kotatsu becomes a major issue. Furthermore, since the heating device of this technical proposal is installed on a base, it has a poor heating effect on the tabletop. In addition, this technical proposal does not disclose the mounting structure of the heating tube. Summary of the Invention [Problem to be solved by the invention]

[0005] The purpose of this invention is to solve the technical problems in the prior art, such as the inconvenience of storing an electric kotatsu, the reduced heating effect on the tabletop, and the inconvenience of replacing the heating tube. [Means for solving the problem]

[0006] In order to solve the above technical problems, one embodiment of the present invention discloses an electric kotatsu comprising a frame having a top plate on the upper side and movable legs on the lower side which can be folded, the frame having an electric heater installed below the top plate, the frame having fixed legs and a support rod which is detachably connected above the fixed legs, the movable legs being foldably installed below the fixed legs, the electric heater being attached to the support rod via a connecting rod, the electric heater comprising a base plate provided with a plurality of reflective covers, a heating tube mounting portion for mounting a heating tube being provided at both opposing ends of the reflective covers, a heating tube insertion hole consisting of a through hole opened in the heating tube mounting portion being formed, a heating tube retaining hole being provided on one side of the heating tube insertion hole to prevent the heating tube from shifting in position, and the heating tube insertion hole being connected to the heating tube retaining hole. Effect of the Invention

[0007] In the above-mentioned structure, the electric heater is installed under the tabletop via a connecting rod, which not only makes it easy to attach and detach the electric heater, but also increases the heating effect of the electric heater on the tabletop. By installing the movable legs in a foldable manner, when the electric kotatsu does not need to be used, the movable legs can be quickly folded under the frame, saving space and making storage easy. By providing a heating tube insertion hole and a heating tube holding hole in the heating tube mounting part, the heating tube can be quickly and reliably attached and easily removed. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic diagram of the overall configuration according to one embodiment of the present invention. [Diagram 2]FIG. 2 is a schematic diagram showing the overall configuration of a different viewing angle according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a schematic diagram of a connecting head according to an embodiment of the present invention. [Figure 4] FIG. 4 is a structural diagram of a connecting head according to an embodiment of the present invention viewed from different angles. [Diagram 5] FIG. 5 is a schematic diagram of the configuration after removing the shield according to one embodiment of the present invention. [Figure 6] FIG. 6 is an enlarged view of a portion A in FIG. [Figure 7] FIG. 7 is an exploded view of a fixed leg and a movable leg according to an embodiment of the present invention. [Figure 8] FIG. 8 is a structural diagram of a fixed leg according to an embodiment of the present invention. [Figure 9] FIG. 9 is a structural schematic diagram of a fixed leg according to an embodiment of the present invention from different viewing angles. [Figure 10] FIG. 10 is a structural diagram of a movable leg according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention will be further described below in conjunction with the drawings and embodiments. EXAMPLES

[0010] As shown in Figures 1 to 10, an electric kotatsu based on the present invention has a top plate 2 on the top and a frame 1 with foldable movable legs 3 on the bottom. An electric heater 4 is provided on the frame 1, and the electric heater 4 is provided below the top plate 2. As shown in FIG. 2, the frame 1 includes a fixed leg 11 and a support rod 12 that is detachably connected to the upper part of the fixed leg 11, and the movable leg 3 is provided below the fixed leg 11 so as to be foldable.

[0011] According to this embodiment, the support rods 12 include horizontal support rods 121 and vertical support rods 122, and the frame 1 is formed by connecting two horizontal support rods 121, two vertical support rods 122, and four fixed legs 11 together. The heater 4 is attached to the horizontal support rod 121 via a connecting rod 123 .

[0012] As shown in Figures 2 and 3, according to this embodiment, the connecting rod 123 is connected to the horizontal support rod 121 via a connecting head 5, the connecting rod 123 is inserted into the connecting head 5, a first restricting hole (not shown) is opened at the end of the connecting rod 123, and the connecting head 5 is provided with an elastic snap 51 with a protrusion 510 extending into the inside of the connecting head 5, and the connecting rod 123 is inserted into the connecting head 5 and the protrusion 510 engages with the first restricting hole.

[0013] As shown in FIG. 4, one end of the connecting head 5 connected to the horizontal support bar 121 is provided with a first latch 511 that can be inserted into the support bar 121 . 2, the support rod 121 is provided with a groove 1210 for receiving the connecting head 5, a latch hole (not shown) for engaging with a first latch 511 is provided in the groove 1210, and a lock fin 512 with a screw hole is further provided on the connecting head 5. Usually, the connecting head 5 is a plastic injection molded product, and the first latch 511 and the lock fin 512 are integrally molded by injection molding, but of course the connecting head 5 may also be an aluminum alloy die-cast molded product.

[0014] The electric heater 4 is assembled by assembling the connecting rod 123 having the connecting head 5 attached thereto to the horizontal support rod 121, tightening the screws into the screw holes of the lock fin 512, assembling the frame 1, and finally fixing it to the connecting rod 123 with a bolt.

[0015] As shown in Figures 5 and 6, the electric heater 4 includes a substrate 40 on which a number of reflective covers 41 are provided. In this embodiment, there are two reflective covers 41, and heating tube mounting portions 411 for mounting a heating tube 42 are provided on both opposing ends of the reflective covers 41. A heating tube insertion hole is formed as a through hole opened in the heating tube mounting portions 411.

[0016] In this embodiment, a C-shaped through hole 4110 formed in the heating tube attachment portion 411 forms a bendable locking piece 4111 . A heating tube holding hole 4112 for preventing the heating tube from shifting in position is formed on one side of the C-shaped through hole 4110 , and the C-shaped through hole 4110 communicates with the heating tube holding hole 4112 .

[0017] In this embodiment, opposing edges of the heating tube holding hole 4112 are bent to form fixed slides 4113 parallel to each other. Usually, the heating tube 42 is provided with an engagement groove, and when installing the heating tube 42, first, the engagement piece 4111 is bent to form a heating tube insertion hole, the heating tube 42 is passed through the heating tube insertion hole, and after the engagement groove of the heating tube 42 and the fixed slide 4113 are aligned with each other, the heating tube 42 is pushed sideways to engage the heating tube 42 with the heating tube holding hole 4112 along the fixed slide 4113, and finally, the engagement piece 4111 is folded back so that the engagement piece 4111 engages the heating tube 42, and the heating tube is fixed.

[0018] As shown in FIG. 2, the substrate 40 is provided with a shield 43 with heat dissipation holes to prevent the user from getting burned. In order to prevent the user from being burned due to an excessively high temperature of the top plate 2 caused by heating by the electric heater 4, a heat insulating block is provided between the base plate 40 and the top plate 2.

[0019] 7, the fixed leg 11 is provided with a U-shaped connecting part 110 for accommodating the support rod 12, a first regulating post 111 having a hollow structure is provided inside the U-shaped connecting part 110, and the support rod 12 is provided with a second regulating hole (not shown) that engages with the first regulating post 111. The U-shaped connecting part 110 and the first regulating post 111 allow the support rod 12 to be reliably positioned on the fixed leg 11.

[0020] A lid 112 is further provided on the top of the fixed leg 11, and a second regulating post 113 corresponding to the first regulating post 111 is provided within the lid 112. When the lid 112 is placed over the fixed leg 11, the second regulating post 113 engages with the second regulating hole of the support rod 12. The second regulating pillar 113 has a screw hole for connecting to the first regulating pillar 111, and a screw is inserted upward from the bottom of the first regulating pillar 111 and screwed into the screw hole of the second regulating pillar 113 to achieve a tight connection between the support rod 12, the fixed leg 11, and the cover body 112.

[0021] The lid 112 is provided with an anti-slip pad attachment portion 1120 on which an anti-slip pad 1121 is laid. As shown in Figures 7 and 8, a movable leg storage section 115 is provided inside the fixed leg 11, and an insertion section 31 that can be inserted into the movable leg storage section 115 is provided at the top of the movable leg 3. When the insertion section 31 is fully inserted into the movable leg storage section 115, the movable leg 3 cannot be folded, and when the insertion section 31 is partially inserted into the movable leg storage section 115, the movable leg 3 can be folded.

[0022] As shown in Figures 8 and 9, the movable leg storage section 115 has two opposing sliding walls 1151, which are connected to the bottom surface and side wall of the fixed leg 11. An arc wall 1152 is provided between the two sliding walls 1151, and a U-shaped groove 11510 with an upward opening is provided in the sliding wall 1151, and a recess 11520 that is recessed inward is provided in the arc wall 1152.

[0023] As shown in FIG. 7, the side wall of the fixed leg 11 is provided with a cutout 116 for allowing the insertion portion 31 of the movable leg 3 to enter therein. As shown in FIG. 9, a slide groove 117 is provided in the side wall of the fixed leg 11, and a locking boss 1171 is provided in the slide groove 117.

[0024] As shown in FIGS. 7 and 10, the cross section of the insertion portion 31 and the cross section of the movable leg receiving portion 115 coincide with each other, and the insertion portion 31 is provided with a circular boss 32 that matches the U-shaped groove 11510. 10, an arc surface 33 that rotates about the axis of a circular boss 32 is provided on the outside of the top of the insertion portion 31, a first boss 34 that engages with a recess 11520 is provided at the top end of the insertion portion 31, and a second boss 35 that engages with a locking boss 1171 is provided on the surface of the insertion portion 31 facing the side wall of the fixed leg 11. The second boss 35 prevents the movable leg 3 from easily climbing over the locking boss 1171.

[0025] The insertion portion 31 forms a step 36 with the main body of the movable leg 3, a second latch 37 is provided on the step 36, and a latch hole 118 that fits into the second latch 37 is provided on the bottom of the fixed leg 11 (see FIG. 5). During normal use of the electric kotatsu, the insertion portion 31 is fully inserted into the movable leg storage portion 115, the step 36 supports the fixed leg 11, and when it is necessary to fold the movable leg 3, the movable leg 3 is pulled in a direction away from the fixed leg 11, and the circular boss 32 moves to the bottom of the U-shaped groove 11510, at which time the second latch 37 comes out of the latch hole 118, and the movable leg 3 is further folded back toward the escape cutout portion 116, the arc surface 33 passes over the arc wall 1152 so as to graze it, and the first boss 34 enters the recess 11520, and the folding of the movable leg 3 is completed. Figure 5 shows a schematic diagram of one of the movable legs 3 after folding has been completed.

[0026] In the above-mentioned structure, the electric heater is installed below the table top 2 via the connecting rod 123, which not only makes it easy to attach and detach the electric heater 4 but also increases the heating effect of the electric heater 4 on the table top 2, and by installing the movable legs 3 in a foldable manner, when the electric kotatsu does not need to be used, the movable legs 3 can be quickly folded below the frame 1, saving space and making storage easy. By providing the heating tube attachment part 411 with a heating tube insertion hole and a heating tube holding hole 4112, the heating tube 42 can be quickly and reliably attached and easily removed.

Claims

1. The heating device includes a frame having a top plate on an upper side and movable legs on a lower side, the frame being provided with an electric heater, and the electric heater is provided below the top plate; The frame includes a fixed leg and a support rod detachably connected to an upper portion of the fixed leg, and the movable leg is foldably provided below the fixed leg. This electric kotatsu is characterized in that the electric heater is attached to a support rod via a connecting rod, the electric heater has a base plate on which a plurality of reflective covers are provided, a heating tube mounting portion for mounting a heating tube is provided at both opposing ends of the reflective covers, a heating tube insertion hole is formed in the heating tube mounting portion by way of a through hole, a heating tube holding hole is provided on one side of the heating tube insertion hole to prevent the heating tube from shifting in position, and the heating tube insertion hole is connected to the heating tube holding hole.

2. The electric kotatsu described in claim 1, characterized in that a bendable locking piece is formed by a C-shaped through hole opened in the heating tube mounting section, the opposing edges of the heating tube holding hole are bent to form fixed slides that are parallel to each other, a shield with heat dissipation holes is provided on the base, and an insulating block is provided between the base and the top plate.

3. The connecting rod is connected to the support rod through a connecting head, the connecting rod is inserted into the connecting head, a first restricting hole is opened in the connecting rod, and the connecting head is provided with an elastic snap with a protrusion extending into the connecting head, the connecting rod is inserted into the connecting head, and the protrusion fits into the first restricting hole; 2. The electric kotatsu according to claim 1, characterized in that a first latch that can be inserted into the support rod is provided at one end of the connecting head that is connected to the support rod.

4. The electric kotatsu as described in claim 3, characterized in that the support rod has a groove for receiving the connecting head, a latch hole that engages with the first latch is provided within the groove, and the connecting head further has a lock fin with a screw hole.

5. The electric kotatsu described in claim 1, characterized in that the fixed leg is provided with a U-shaped connecting portion for storing a support rod, a first regulating pillar having a hollow structure is provided within the U-shaped connecting portion, the support rod is provided with a second regulating hole that fits with the first regulating pillar, a lid is further provided on the top of the fixed leg, a second regulating pillar corresponding to the first regulating pillar is provided within the lid, and the second regulating pillar fits into the second regulating hole when the lid is placed over the fixed leg.

6. The electric kotatsu as described in claim 5, characterized in that the second regulating pole has a screw hole for connecting to the first regulating pole, and an anti-slip pad mounting portion with an anti-slip pad attached is provided on the lid.

7. The electric kotatsu described in claim 1, characterized in that a movable leg storage section is provided inside the fixed leg, and an insertion section that can be inserted into the movable leg storage section is provided at the top of the movable leg, and when the insertion section is fully inserted into the movable leg storage section, the movable leg cannot be folded, and when the insertion section is partially inserted into the movable leg storage section, the movable leg can be folded.

8. The electric kotatsu described in claim 7, characterized in that the movable leg accommodating section has two opposing sliding walls, the sliding walls are connected to the bottom surface and side wall of the fixed leg, an arc wall is provided between the two sliding walls, the sliding wall has a U-shaped groove with an upward opening, and the arc wall has an inwardly recessed recess, the side wall of the fixed leg has a cutout section for the movable leg insertion section, the side wall of the fixed leg has a sliding groove, and a locking boss is provided within the sliding groove.

9. The electric kotatsu described in claim 8, characterized in that the cross section of the insertion portion and the cross section of the movable leg accommodating portion coincide, the insertion portion is provided with a circular boss that engages with a U-shaped groove, the outside of the top of the insertion portion is provided with an arcuate surface whose rotation center is the axis of the circular boss, the top end of the insertion portion is provided with a first boss that engages with a recess, and the surface of the insertion portion facing the fixed leg side wall is provided with a second boss that engages with a locking boss.

10. The electric kotatsu as described in claim 7, characterized in that the insertion portion forms a step with the movable leg body, a second latch is provided at the step, and a latch hole that engages with the second latch is provided at the bottom of the fixed leg.

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