A folding electric heater

Abstract

The utility model discloses a folding electric heater, including first electric heater, second electric heater and folding column, the outside of folding column is equipped with two articulated cylinder seat, and the lateral wall of two articulated cylinder seat is installed with support rod, the support rod on the upside articulated cylinder seat is connected first electric heater, and the support rod on the downside articulated cylinder seat is connected second electric heater, the bottom of first electric heater and second electric heater is installed with the bearing bottom plate, and the bottom of bearing bottom plate four corners is installed with the drive wheel, the setting of this folding electric heater, through the cooperation design of first electric heater, second electric heater and folding column and articulated cylinder seat, and electric heater can realize folding storage, when not using, it is folded to the inside rotation, and the space of occupying is greatly reduced, compared with traditional fixed electric heater, more convenient to store in narrow corner or storage cabinet, effectively save indoor space resource, especially suitable for the family or place of limited living space.

Description

Technical Field

[0001] This utility model relates to the field of electric heater technology, specifically a folding electric heater. Background Technology

[0002] In cold seasons, electric heaters are widely used as essential heating devices. However, existing electric heaters have many shortcomings. On the one hand, most electric heaters have a fixed structure and are large in size, taking up a lot of space when not in use and making storage extremely inconvenient. On the other hand, they have poor mobility; when users need to move the electric heater to different rooms or locations, the process is cumbersome, and although some electric heaters have wheels, the stability and maneuverability of the wheels are poor. In addition, their functions are relatively limited, only providing heating and failing to meet more user needs. For example, they do not provide a function for hanging clothes, requiring users to use additional tools such as clothes hangers when drying small items of clothing. Therefore, there is an urgent need to design an electric heater with folding capabilities, easy portability, and rich functionality to solve the problems existing in the current technology. Utility Model Content

[0003] The purpose of this invention is to provide a foldable electric heater to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a folding electric heater, comprising a first electric heater, a second electric heater, and a folding column. Two hinged cylindrical seats are fitted onto the outside of the folding column, and support rods are installed on the side walls of both the upper and lower hinged cylindrical seats. The support rod on the upper hinged cylindrical seat connects to the first electric heater, and the support rod on the lower hinged cylindrical seat connects to the second electric heater. A bearing base plate is installed at the bottom of both the first and second electric heaters, and drive wheels are installed at the four corners of the bottom of the bearing base plate. A locking block is installed at the front end of the side wall of the first electric heater, and a locking groove is opened at the front end of the side wall of the second electric heater; the locking block and the locking groove cooperate with each other. A carrier plate is installed on the upper end of both side walls of the first and second electric heaters, and fixing blocks are evenly spaced from left to right on the side walls of the carrier plates. Clothing hooks are installed on the side walls of the fixing blocks.

[0005] As a preferred embodiment of the present invention, the hinged cylindrical base includes a bearing a and a bearing b arranged opposite to each other. The inner walls of the bearing a and the bearing b are evenly spaced along their axis and have rotating cavities. Ball bearings are installed inside the rotating cavities and are fitted against the outer wall of the folding column.

[0006] As a preferred embodiment of the folding electric heater of this utility model, connecting plates are installed on both outer walls of the bearing a and bearing b, and screw holes are opened on the side walls of the connecting plates, with bolts screwed into the inside of the screw holes.

[0007] As a preferred embodiment of the folding electric heater of this utility model, both the outer walls of the bearing a and the bearing b are provided with oil injection holes, and plugs are inserted into the oil injection holes.

[0008] As a preferred embodiment of the folding electric heater of this utility model, the outer walls on both sides of the card block are provided with inclined convex surfaces, and the inner walls on both sides of the card slot are provided with inclined concave surfaces, the inclined convex surfaces and the inclined concave surfaces cooperating with each other.

[0009] As a preferred embodiment of the folding electric heater of this utility model, the card block has a filling cavity inside, an elastic element is installed inside the filling cavity, and the end of the card block has a rounded corner.

[0010] As a preferred embodiment of the folding electric heater of this utility model, a U-shaped rod is installed between the two carrier plates, and limit nuts are installed at both ends of the folding column.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the design of this foldable electric heater is reasonable.

[0012] I. Space utilization and ease of storage

[0013] Through the combined design of the first and second electric heaters with the folding column and hinged base, the electric heater can be folded for storage. When not in use, it can be rotated inward and folded, greatly reducing the space occupied. Compared with traditional fixed electric heaters, it is easier to store in narrow corners or storage cabinets, effectively saving indoor space resources, and is especially suitable for families or places with limited living space.

[0014] II. Flexible mobility

[0015] The drive wheels mounted on the bottom of the support base give the electric heater excellent mobility. Users can easily move the heater between different rooms and locations, solving the problem of difficult transport of traditional electric heaters. Furthermore, the drive wheels are distributed at the four corners of the support base, ensuring stability and maneuverability during movement and preventing tipping or obstruction caused by poor wheel design.

[0016] III. Advantages of Multifunctional Integration

[0017] The clothes hooks on the carrier plates and the U-shaped rod between the two carrier plates give the electric heater a clothes hanging function. While keeping warm, users can hang small items of clothing, towels, etc. on the hooks and use the heat emitted by the electric heater to dry them; larger items of clothing or items can be hung on the U-shaped rod, meeting the diverse needs of users and breaking through the limitations of the single function of traditional electric heaters. Attached Figure Description

[0018] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the card block and card slot of this utility model;

[0020] Figure 3 This is a schematic diagram of the hinged cylinder seat of this utility model;

[0021] Figure 4 This is a schematic diagram of part A of the present utility model.

[0022] In the diagram: 1. First electric heater; 2. Second electric heater; 3. Folding column; 4. Hinge cylinder seat; 41. Shaft seat a; 42. Shaft seat b; 5. Support rod; 6. Limiting nut; 7. Drive wheel; 8. Bearing base plate; 9. Locking block; 10. U-shaped rod; 11. Carrier plate; 12. Fixing block; 13. Clothing hook; 14. Slot; 15. Filling cavity; 16. Rounded corner; 17. Elastic element; 18. Sloping convex surface; 19. Sloping concave surface; 20. Screw hole; 21. Connecting plate; 22. Bolt; 23. Oil injection hole; 24. Hole plug; 25. Rotating cavity; 26. Ball bearing. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] In this technical solution, a folding electric heater includes a first electric heater 1, a second electric heater 2, and a folding column 3. Two hinged cylindrical bases 4 are fitted onto the outside of the folding column 3. Support rods 5 are installed on the side walls of both the upper and lower hinged cylindrical bases 4. The support rod 5 on the upper hinged cylindrical base 4 connects to the first electric heater 1, and the support rod 5 on the lower hinged cylindrical base 4 connects to the second electric heater 2. A supporting base plate 8 is installed at the bottom of both the first electric heater 1 and the second electric heater 2. Drive wheels 7 are installed at the four corners of the bottom of the supporting base plate 8. A locking block 9 is installed at the front end of the side wall of the first electric heater 1, and a locking groove 14 is opened at the front end of the side wall of the second electric heater 2. The locking block 9 and the locking groove 14 cooperate with each other. A carrier plate 11 is installed on the upper end of both side walls of the first electric heater 1 and the second electric heater 2. Fixing blocks 12 are evenly spaced from left to right on the side walls of the carrier plate 11, and clothing hooks 13 are installed on the side walls of the fixing blocks 12.

[0026] This folding electric heater consists of a first electric heater 1 and a second electric heater 2 connected by a folding column 3 to form the main structure. The folding column 3 is made of stainless steel tubing with a diameter of 40mm and a wall thickness of 3mm. Its length is designed to be 600mm according to the height of the heater, ensuring structural strength while reducing overall weight. The two hinged cylindrical bases 4 fitted externally to the folding column 3 are made of high-strength engineering plastic PA66 with 30% glass fiber, with an inner diameter of 42mm, forming a clearance fit with the folding column 3 to ensure flexible rotation.

[0027] The base plate 8 is made of 3mm thick aluminum alloy plate, with dimensions of 300mm × 200mm. The drive wheels 7 installed at the four corners of its bottom are swivel casters with brakes, a wheel diameter of 50mm, a wheel width of 20mm, and a load capacity of 50kg / wheel. The drive wheels 7 are made of PU material, with a rolling resistance coefficient of less than 0.02 and a steering torque of less than 1N·m, ensuring flexible and stable movement of the electric heater.

[0028] The carrier plate 11 is made of 2mm thick stainless steel plate and measures 250mm × 50mm. Five fixing blocks 12 are evenly installed on its side wall. These fixing blocks 12 are made of POM plastic and measure 20mm × 15mm × 10mm. The clothing hook 13 is made of Φ5mm stainless steel wire, with a hook depth of 30mm and a maximum load capacity of 2kg.

[0029] In some technical solutions, the hinged cylinder seat 4 includes a bearing a41 and a bearing b42 arranged opposite to each other. The inner walls of the bearing a41 and the bearing b42 are evenly spaced along their axis with rotating cavities 25. Ball bearings 26 are installed inside the rotating cavities 25 and are fitted to the outer wall of the folding column 3.

[0030] The hinged sleeve seat 4 consists of two opposing bearing seats a41 and b42, which are connected by a connecting plate 21 and bolts 22. Both bearing seats a41 and b42 are semi-cylindrical structures with an inner diameter of 42 mm, an outer diameter of 60 mm, and a length of 80 mm. Six rotating cavities 25 are evenly distributed along the axis on their inner walls. Each rotating cavity 25 is a hemispherical groove with a diameter of 10 mm and a depth of 5 mm.

[0031] In some technical solutions, connecting plates 21 are installed on both outer walls of bearing a41 and bearing b42. The side walls of the connecting plates 21 are provided with screw holes 20, and bolts 22 are screwed into the screw holes 20.

[0032] The ball bearings 26 installed inside the rotating cavity 25 are made of GCr15 bearing steel, with a diameter of 8mm and a surface roughness of Ra0.2μm, and fit snugly against the outer wall of the folding column 3. The ball bearings 26 can roll freely inside the rotating cavity 25, with a rolling friction coefficient of less than 0.005, ensuring that the torque when the hinged cylinder seat 4 rotates around the folding column 3 is less than 0.5N·m, thus ensuring easy operation.

[0033] Both sides of the outer walls of bearing a41 and bearing b42 are provided with connecting plates 21, each 15mm wide and 5mm thick, with M8 screw holes 20. M8×25 hexagonal head bolts 22 of GB / T5782-2016 standard are used for fastening. The bolt material is Q235 steel, and the tightening torque is 12~15 N·m to ensure reliable connection.

[0034] In some technical solutions, both bearing a41 and bearing b42 have oil injection holes 23 on their outer walls, and a plug 24 is inserted into the oil injection hole 23.

[0035] Oil injection holes 23 with a diameter of 6 mm are provided in the middle of the outer walls of bearing a41 and bearing b42. The internal thread of the oil injection hole 23 is M6×1. The plug (24) is made of nitrile rubber, with an outer diameter of 6 mm, a height of 10 mm, and an interference fit of 0.3 mm to ensure good sealing. Injecting lithium-based grease through the oil injection hole 23 can effectively reduce the coefficient of friction to below 0.003.

[0036] In some technical solutions, the outer walls on both sides of the card block 9 are provided with inclined convex surfaces 18, and the inner walls on both sides of the card slot 14 are provided with inclined concave surfaces 19, with the inclined convex surfaces 18 and the inclined concave surfaces 19 cooperating with each other.

[0037] The locking block 9 is made of ABS plastic and has a rectangular structure with dimensions of 30mm × 20mm × 15mm. The angle between the convex surfaces 18 on both outer walls and the horizontal plane is 45°, and the length of the convex surfaces 18 is 15mm. The radius of the rounded corners 16 at the ends of the locking block 9 is 5mm, facilitating insertion into the locking slots 14.

[0038] The slot 14 is located at the front end of the side wall of the second electric heater (2), and is a rectangular groove with dimensions of 32mm × 22mm × 17mm. The angle between the inclined concave surfaces (19) of the inner walls on both sides and the horizontal plane is 45°, and the clearance between them and the inclined convex surfaces 18 of the locking block 9 is 0.5mm.

[0039] In some technical solutions, the card block 9 has a filling cavity 15 inside, and an elastic element 17 is installed inside the filling cavity 15. The end of the card block 9 has a rounded corner 16.

[0040] The filling cavity 15 inside the locking block 9 is cylindrical, with a diameter of 12mm and a depth of 12mm. The elastic element 17 is a cylindrical helical spring with a specification of Φ8×15, made of 65Mn spring steel, with a spring stiffness of 2N / mm and a pre-compression of 3mm. When the locking block 9 is inserted into the locking slot 14, the elastic element 17 is further compressed by 5mm, generating an elastic force of 10N, ensuring a stable connection between the locking block 9 and the locking slot 14.

[0041] In some technical solutions, a U-shaped rod 10 is installed between the two carrier plates 11, and limit nuts 6 are installed at both ends of the folding column 3.

[0042] The U-shaped rod 10 installed between the two carrier plates 11 is made of Φ12mm stainless steel tubing. The opening width of the U-shaped rod 10 is 200mm, the height is 150mm, and the surface is polished with a roughness of Ra0.8μm. The limiting nuts 6 installed at both ends of the folding column 3 are made of brass, with an outer diameter of 50mm and a thickness of 10mm. They are connected to the folding column 3 through M36×2 threads, and the tightening torque is 30~35N·m to prevent the hinged sleeve seat 4 from coming off.

[0043] Working process and principle: When using the folding electric heater, the user holds the first and second electric heaters with both hands and applies force outwards. Because the ball bearings 26 inside the hinged cylinder 4 are in contact with the outer wall of the folding column 3, and the ball bearings 26 can roll freely within the rotating cavities 25 on the inner walls of the bearing seats a41 and b42, based on the principle that rolling friction is much less than sliding friction, the first and second electric heaters can rotate smoothly around the folding column 3. During rotation, the upper and lower hinged cylinders 4 respectively drive the first electric heater 1 and the second electric heater 2 to unfold via the support rods 5. When both are unfolded to a suitable angle (generally 180° or adjusted according to actual usage needs), the force is stopped.

[0044] At this time, the locking block 9 at the front end of the side wall of the first electric heater 1 is opposite to the locking groove 14 at the front end of the side wall of the second electric heater 2. The inclined convex surfaces 18 on both sides of the locking block 9 cooperate with the inclined concave surfaces 19 on both sides of the locking groove 14. Utilizing the guiding principle of the inclined surfaces, when the locking block 9 is inserted into the locking groove 14, the inclined convex surfaces 18 slide along the inclined concave surfaces 19, guiding the locking block 9 to accurately enter the locking groove 14. At the same time, the elastic element 17 in the filling cavity 15 inside the locking block 9 is compressed during the insertion of the locking block 9. According to Hooke's law, the elastic element 17 generates elastic deformation and provides a reverse elastic force, so that the locking block 9 is firmly locked in the locking groove 14, thereby fixing the first electric heater 1 and the second electric heater 2 in the unfolded state, forming a stable heating structure.

[0045] After the electric heater is unfolded and fixed, the drive wheels 7 at the four corners of the bottom of the supporting base plate 8 contact the ground. The drive wheels 7 adopt a universal wheel structure. Based on the characteristic of universal wheels that can rotate freely in multiple directions, the user only needs to gently push the electric heater, and the drive wheels 7 will roll on the ground, moving the electric heater as a whole. Since the drive wheels 7 are distributed at the four corners of the supporting base plate 8, according to the principles of mechanics, this layout can keep the electric heater balanced during movement, avoiding tipping due to the shift of the center of gravity. It also has good maneuverability, allowing users to easily move the electric heater to different rooms or any location in the room to meet the heating needs of different areas.

[0046] While the electric heater is operating for warmth, users can utilize its multi-functional features to hang clothes. A clothes hook 13 is provided on the fixing block 12 mounted on the side wall of the carrier plate 11. Based on the lever principle, the clothes hook 13 can support a certain weight of clothing. Users can hang small items of clothing, such as socks, gloves, and towels, on the clothes hook 13, maintaining a suitable distance between the clothes and the electric heater, using the heat emitted by the heater to dry the clothes.

[0047] Larger garments or items can be hung on the U-shaped rod 10 between the two carrier plates 11. The U-shaped rod 10 is made of sturdy stainless steel, with a stable structure that can withstand large loads according to the principles of material mechanics. Hanging larger garments on the U-shaped rod 10 also allows for drying using the heat from the electric heater, effectively expanding the heater's functionality and meeting diverse user needs.

[0048] When the electric heaters are finished using and need to be stored, the user first presses the locking block 9, further compressing the elastic element 17 inside the locking block 9, reducing the elastic force, and causing the locking block 9 to disengage from the locking slot 14. Then, the user holds the first and second electric heaters again and applies inward force. With the rolling cooperation of the ball bearing 26 and the folding post 3 inside the hinge cylinder 4, the first and second electric heaters 1 and 2 rotate inward around the folding post 3 and fold. During the folding process, the rolling of the ball bearing 26 reduces the rotational resistance, making the folding operation easy and convenient.

[0049] After folding, the size of the electric heater is greatly reduced, making it easy to store in narrow spaces or cabinets. In addition, the oil injection holes 23 on the outer walls of the bearing a41 and bearing b42 allow users to periodically inject lubricating oil through them. According to the lubrication principle, the lubricating oil can form an oil film between the ball bearing 26 and the folding column 3, further reducing friction, ensuring smooth rotation of the hinged cylinder seat 4, extending the service life of the electric heater, and reducing maintenance costs and difficulties.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A foldable electric heater comprising a first electric heater (1), a second electric heater (2) and a folding column (3), characterized in that, The folding column (3) is fitted with two hinged cylindrical seats (4) on its outside, and support rods (5) are installed on the side walls of the upper and lower hinged cylindrical seats (4); The support rod (5) on the upper hinged cylindrical base (4) is connected to the first electric heater (1), and the support rod (5) on the lower hinged cylindrical base (4) is connected to the second electric heater (2); The bottom of the first electric heater (1) and the second electric heater (2) are both equipped with a supporting base plate (8), and a drive wheel (7) is installed at each of the four corners of the bottom of the supporting base plate (8); The first electric heater (1) has a locking block (9) installed on the front end of its side wall, and the second electric heater (2) has a locking groove (14) opened on the front end of its side wall. The locking block (9) and the locking groove (14) cooperate with each other. The first electric heater (1) and the second electric heater (2) are each equipped with a carrier plate (11) on the upper end of both side walls. Fixing blocks (12) are evenly and equidistantly installed on the side walls of the carrier plate (11) from left to right. Clothing hooks (13) are installed on the side walls of the fixing blocks (12).

2. The electric folding heater according to claim 1, wherein The hinged cylindrical seat (4) includes a bearing a (41) and a bearing b (42) arranged opposite to each other. The inner walls of the bearing a (41) and the bearing b (42) are provided with rotating cavities (25) evenly spaced along their axes. The rotating cavities (25) are equipped with ball bearings (26), which are fitted against the outer wall of the folding column (3).

3. A folding electric heater according to claim 2, characterized in that, Both sides of the outer walls of the bearing a (41) and bearing b (42) are equipped with connecting plates (21). The side walls of the connecting plates (21) are provided with screw holes (20), and bolts (22) are screwed into the screw holes (20).

4. A folding electric heater according to claim 3, characterized in that, Both the outer walls of the bearing a (41) and the bearing b (42) are provided with oil injection holes (23), and a plug (24) is inserted into the oil injection hole (23).

5. A folding electric heater according to claim 1, characterized in that, The outer walls of both sides of the card block (9) are provided with inclined convex surfaces (18), and the inner walls of both sides of the card slot (14) are provided with inclined concave surfaces (19). The inclined convex surfaces (18) and the inclined concave surfaces (19) cooperate with each other.

6. A folding electric heater according to claim 5, characterized in that, The card block (9) has a filling cavity (15) inside, and an elastic element (17) is installed inside the filling cavity (15). The end of the card block (9) has a rounded corner (16).

7. A folding electric heater according to claim 1, characterized in that, A U-shaped rod (10) is installed between the two carrier plates (11), and limit nuts (6) are installed at both ends of the folding column (3).

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