A limiting piece and a limiting assembly for an electric heating water pipe

Abstract

This application discloses a limiting member and a limiting assembly for electric water pipes, comprising a first vertical plate, a second vertical plate, and a horizontal plate. One end of the horizontal plate is connected to the first vertical plate, and the other end is connected to the second vertical plate. The first vertical plate, the second vertical plate, and the horizontal plate together form a first U-shaped groove. A second U-shaped groove is formed on the first vertical plate, with its opening direction perpendicular to the opening direction of the first U-shaped groove. A third U-shaped groove is formed on the second vertical plate, with its opening direction opposite to that of the second U-shaped groove. The bottoms of the first U-shaped groove, the second U-shaped groove, and the third U-shaped groove are connected and form a through hole. This application improves the protection of the wiring during and after installation, and optimizes the convenience of installing and removing the wiring.

Description

Technical Field

[0001] This application relates to the field of electric hot water pipe technology, and in particular to a limiting member and a limiting assembly for electric hot water pipes. Background Technology

[0002] In existing technologies, methods such as fixing grooves, elastic clips, and positioning posts are typically used to precisely limit the heating wire on the housing or end cap. However, these limiting methods have several drawbacks, specifically: First, fixing grooves expose the heating wire to the connection end face, increasing the risk of heating wire wear. Even if components are added to the fixing groove to prevent the heating wire from being exposed, the process of installing the heating wire into the fixing groove becomes extremely cumbersome.

[0003] Secondly, the elastic retaining strips and positioning posts require the heating wire to be installed before other installation operations can be performed; or the relevant components must be removed before the heating wire can be taken out. This makes the installation and removal process of the heating wire quite complicated. Moreover, these limiting methods directly contact the heating wire, which may damage the heating wire and thus affect its heating effect. Even if a non-removable method (such as sliding) is used to set the elastic retaining strips and positioning posts, the increased freedom of the limiting components will affect the limiting effect of the heating wire, and thus cannot protect the heating wire.

[0004] Furthermore, the bending of the heating wire not only affects its fit with the installation location but also the uniformity of heating on its surface. Therefore, during installation, it is necessary to consider how to minimize the alteration of the heating wire shape caused by the limiting installation. In conclusion, existing heating wire limiting installation technology has room for further improvement. Utility Model Content

[0005] In view of this, this application provides a limiting member and a limiting component for electric water pipes, which can protect the heating wire through a special groove design. This allows the user to easily install the limiting member and the heating wire without touching the heating wire, simply by twisting the limiting member. The installed heating wire is not exposed on the connection end face. At the same time, when the user needs to remove the heating wire, the heating wire and the fixing member can be removed together. The limiting member acts as a protective element for the heating wire.

[0006] In summary, in order to improve the protection of the circuit by the limiting component during and after installation, and to optimize the convenience of installing and removing the circuit, this application proposes a limiting component and a limiting assembly for electric water pipes.

[0007] The limiting member and the limiting assembly for electric water pipe provided in this application adopt the following technical solution: A limiting member includes a first vertical plate portion, a second vertical plate portion, and a horizontal plate portion. One end of the horizontal plate portion is connected to the first vertical plate portion, and the other end is connected to the second vertical plate portion. The first vertical plate portion, the second vertical plate portion, and the horizontal plate portion together form a first "U"-shaped groove. A second "U"-shaped groove is formed on the first vertical plate portion, and the opening direction of the second "U"-shaped groove is perpendicular to the opening direction of the first "U"-shaped groove. A third "U"-shaped groove is formed on the second vertical plate portion, and the opening direction of the third "U"-shaped groove is opposite to the opening direction of the second "U"-shaped groove. The bottoms of the first "U"-shaped groove, the second "U"-shaped groove, and the third "U"-shaped groove are connected and form a through hole.

[0008] When a user needs to protect the heating wire using a limiting device, the operating steps are as follows: First, place the heating wire at the bottom of the first "U"-shaped groove; second, rotate the limiting device so that both sides of the heating wire rotate into the second and third "U"-shaped grooves, which are connected to the first "U"-shaped groove, respectively. At this point, the heating wire is perpendicular to the first "U"-shaped groove and is located within the through hole; finally, place the limiting device and the heating wire together at the position where the heating wire needs to be limited. Due to the unique groove design on the limiting device, the user does not need to touch or forcefully contact the heating wire. Simply place the limiting device close to the heating wire and rotate it to easily hide most of the heating wire's surface within the limiting device, preventing the heating wire from being exposed at the connection end and ensuring the integrity of the heating wire after installation. Simultaneously, the movement of the heating wire in the up, down, left, and right directions is restricted by the limiting device, which helps maintain the stability of the heating wire's position and shape. When users need to install or remove the heating wire from a preset position, they simply need to place the heating wire and the limiting component together into or remove them together. This ensures that the limiting component always covers the surface of the heating wire during installation, operation, and disassembly, protecting the heating wire and preventing its shape from being altered by the limiting component or the installation process, thus ensuring the uniformity and stability of heating. Furthermore, in scenarios where the limiting component is used, users can also replace the heating wire with other wiring, such as wires, for the limiting installation.

[0009] Preferably, the first vertical plate portion, the second vertical plate portion, and the horizontal plate portion together form an assembly groove, the opening direction of which is opposite to the opening direction of the first "U" shaped groove.

[0010] After the heating wire is installed in the through hole of the limiting component, the limiting component along with the heating wire is placed in the preset position. To ensure the integrity of the heating wire, the axial direction of the through hole of the limiting component must be consistent with the two open ends of the preset position. At this time, except for the upper end and the two ends of the axial direction of the through hole, the remaining surfaces of the limiting component are in contact with the preset position, that is, the limiting component is limited in all directions except for the upper end and the two ends of the axial direction of the through hole. Furthermore, the upper end of the limiting component will also be limited after being connected to the housing, end cap, or seal. At this point, only the axial direction of the through hole remains. Since the first "U" shaped groove and the assembly groove are both perpendicular to the through hole, when the limiting component mates with the housing, end cap, or seal through the first "U" shaped groove and is inserted into the preset installation position through the assembly groove, the axial movement of the through hole of the limiting component will also be restricted. Therefore, the first "U"-shaped groove and the assembly groove can not only completely restrict the movement space of the limiting component and increase the stability of the installation position of the limiting component, thereby increasing the stability of the heating wire position, but also the first "U"-shaped groove and the assembly groove in symmetrical positions can maintain the uniformity of force on each position of the limiting component.

[0011] Preferably, the horizontal plate portion has a groove on the end face located between the first "U" shaped groove and the assembly groove.

[0012] When using the above technical solution, the limiting component, along with the heating wire, is typically placed in a plug-in configuration at the preset installation position. Creating a groove in the horizontal plate reduces the contact area between the limiting component and the preset installation position, thereby reducing friction and facilitating the installation and removal of the limiting component. This also reduces damage caused by workpieces colliding with each other.

[0013] Preferably, a sealing protrusion is provided in the lower middle part of the first "U"-shaped groove.

[0014] By adopting the above technical solution, for the first "U" shaped groove, the lower part of the first "U" shaped groove participates in the formation of the through hole but does not participate in the connection. This is because it is necessary to ensure that the heating wire has some relatively free movement space and to limit the heat of the heating wire from being unnecessarily conducted to other places. Therefore, only the middle and upper part of the first "U" shaped groove participates in the limiting connection. The sealing protrusion is set in the middle and lower part of the first "U" shaped groove. On the one hand, by setting a step in the area participating in the limiting connection, the sealing effect of the limiting connection can be increased. On the other hand, the sealing protrusion at the lower part can not only facilitate the demolding of the limiting part, but also further block the area of ​​the heating wire exposed outside the limiting part, increase the contact area between the heating wire and the limiting part, and thus increase the strength of the heating wire being limited, which is conducive to improving the stability of the position and shape of the heating wire.

[0015] Preferably, the first vertical plate portion, the second vertical plate portion, and the horizontal plate portion together form an assembly groove, the opening direction of the assembly groove is opposite to the opening direction of the first "U" shaped groove, and the groove height of the assembly groove is less than or equal to the height of the upper part of the first "U" shaped groove.

[0016] By adopting the above technical solution, since the lower part of the first "U" shaped groove participates in the formation of the through hole but does not participate in the connection, the middle and lower part of the first "U" shaped groove participates in the connection, and the position of the first "U" shaped groove is close to the end of the preset position, the end of the preset position often needs to be sealed, so the first "U" shaped groove not only needs to be limited and connected, but also needs to be sealed (the limited connection and the sealing connection can be performed at once by a sealing element or other components), while the end of the assembly groove that is far from the preset position to be sealed only needs to be limited and connected. Therefore, the height of the upper part of the first "U" shaped groove is greater than or equal to the height of the assembly groove.

[0017] A limiting component for an electric water pipe includes a heating pipe assembly and a limiting member as described above. The heating pipe assembly includes a heating middle component and a heating end component. The two ends of the heating middle component are respectively connected to two heating end components. A limiting groove is formed at one end of the heating middle component, and the limiting groove cooperates with the limiting member.

[0018] By adopting the above technical solution, in scenarios where the heating wire needs to be protected by a limiting component, the user first places the heating wire at the bottom of the first "U"-shaped groove. Next, the user rotates the limiting component so that both sides of the heating wire pass through the second and third "U"-shaped grooves, respectively, which are connected to the first "U"-shaped groove. The heating wire is then positioned perpendicular to the first "U"-shaped groove, and is located within the through-hole. Next, the user places the limiting component and the heating wire together in the limiting groove, ensuring that the axial direction of the limiting component's through-hole aligns with the axial direction of the limiting groove. This limits the limiting component in all directions except for its upper end and the two ends of its through-hole. Finally, the user connects the heating end component to the heating component by covering the limiting component. The upper end of the limiting component is also limited by the heating end component. Through the special groove design on the limiting component, the user does not need to touch or exert force on the heating wire. Simply place the limiting component close to the heating wire and rotate it to easily hide most of the surface of the heating wire inside the limiting component. At this time, the movement of the heating wire in the up, down, left and right directions is restricted by the limiting component. By placing the heating wire and the limiting component together into the limiting groove or taking them out together, the limiting component always wraps around the surface of the heating wire during the installation, operation and disassembly processes, always protecting the heating wire. Moreover, the limiting component is also almost omnidirectionally restricted by the limiting groove and the heating end component, so that the limiting component is stably fixed in the limiting groove. Therefore, the heating wire is also protectively and stably confined in the limiting groove.

[0019] Preferably, the heating component has an assembly protrusion in the limiting groove, the assembly protrusion is perpendicular to the limiting groove, the limiting component has an assembly groove, the assembly protrusion cooperates with the assembly groove, and the heating end component has an end protrusion, the end protrusion cooperates with the upper middle part of the first "U" shaped groove.

[0020] By adopting the above technical solution, after the limiting member is placed into the limiting groove, the lower end face and two sides of the limiting member are limited by the limiting groove, and the upper end face of the limiting member is limited by the heating end component. The axial direction of the through hole of the limiting member, which is parallel to the axial direction of the limiting groove, is not limited. The first "U" shaped groove and the assembly groove are both set perpendicular to the through hole. Therefore, when the limiting member cooperates with the end protrusion through the first "U" shaped groove and with the assembly protrusion through the assembly groove, the movement of the limiting member in the axial direction of the through hole is also restricted. Therefore, the assembly protrusion and the end protrusion can not only completely restrict the movement space of the limiting member and increase the stability of the installation position of the limiting member and the stability of the heating wire position, but also the first "U" shaped groove and the assembly groove in symmetrical positions can maintain the uniformity of force on each position of the limiting member.

[0021] Preferably, the heating component has an assembly protrusion in the limiting groove, the assembly protrusion is perpendicular to the limiting groove, the limiting component has an assembly groove, the assembly protrusion cooperates with the assembly groove, one end of the heating component has a first sealing groove, the first sealing groove communicates with the first "U" shaped groove, the first sealing groove and the first "U" shaped groove are provided with a sealing element, the sealing element cooperates with the upper middle part of the first "U" shaped groove and the first sealing groove.

[0022] By adopting the above technical solution, after the limiting member is placed into the limiting groove, the lower end face and two sides of the limiting member are limited by the limiting groove, and the upper end face of the limiting member is limited by the heating end component. The axial direction of the through hole parallel to the axial direction of the limiting groove is not limited. The first "U" shaped groove and the assembly groove are both set perpendicular to the through hole. When the limiting member cooperates with the sealing member through the upper middle part of the first "U" shaped groove and the first sealing groove, it can not only limit the displacement of the limiting member in the axial direction of the through hole, but also seal the connection position between the heating end component and the heating middle component and the limiting member. The sealing member also seals the upper middle part of the limiting member. At the same time, after cooperating with the assembly protrusion through the assembly groove, the movement of the limiting member in the axial direction of the through hole is completely restricted. This can completely restrict the movement space of the limiting member, increase the stability of the installation position of the limiting member, and increase the stability of the heating wire position. At the same time, the symmetrical first "U" shaped groove and the assembly groove can also maintain the uniformity of force on each position of the limiting member.

[0023] Preferably, the heating tube assembly has a heating pipe, the heating pipe has a heating component, the limiting groove is formed between the heating pipes and is connected to the heating pipe, and the heating component includes a heating wire that passes through the through hole.

[0024] By adopting the above technical solution, the user first places the limiting member close to the heating wire, and then installs the heating wire inside the limiting member by rotating it. The user then places the heating assembly into the heating pipe. During the installation of the heating assembly, the limiting member always protects the heating wire. Similarly, when the user needs to remove the heating assembly, the limiting member is also removed together. This allows the limiting member to be conveniently connected to the heating wire to protect it, and it can also independently restrict its own displacement and the displacement of the heating wire by cooperating with the limiting groove.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. In scenarios where a limiting component is needed to protect the heating wire, the user first places the heating wire at the bottom of the first "U"-shaped groove. Then, the user rotates the limiting component, causing the two sides of the heating wire to be rotated into the second and third "U"-shaped grooves, respectively, which are connected to the first "U"-shaped groove. The heating wire is then positioned perpendicular to the first "U"-shaped groove, and is located within the through hole. Finally, the user places the limiting component and the heating wire together at the desired position to limit the heating wire. The special groove design on the limiting component allows the user to easily conceal most of the heating wire's surface within it without needing to touch or exert force on it. Simply placing the limiting component close to the heating wire and rotating it prevents the heating wire from being exposed on the connection end face. This design helps ensure the integrity of the heating wire after installation, as its movement in all directions is restricted by the limiting component. This helps maintain the stability of the heating wire's position and shape. If the user needs to install or remove the heating wire from a preset position, they only need to place the heating wire and the limiting component together into or remove them from the preset position. This ensures that the limiting component always covers the surface of the heating wire during installation, operation, and disassembly, protecting it. Consequently, the shape of the heating wire will not be changed by the limiting component or the installation process, guaranteeing the uniformity and stability of the heating. In scenarios where the limiting component is used, the user can also replace the heating wire with other wires such as conductors for the limiting installation. 2. When the heating wire is installed in the through hole of the limiting component, the limiting component, along with the heating wire, is placed in the preset position. At this time, to ensure the integrity of the heating wire, the axial direction of the through hole of the limiting component should be consistent with the two open ends of the preset position. At this time, except for the upper end and the two axial ends of the through hole of the limiting component, all other surfaces of the limiting component are in contact with the preset position. That is, the limiting component is limited in all directions except for the upper end and the two axial ends of the through hole of the limiting component. Moreover, the upper end of the limiting component will also be limited after being connected to the housing, end cover, or sealing component. At this time, only the limiting component remains. The axial direction of the through hole of the limiting component is restricted, while the first "U" shaped groove and the assembly groove are both set perpendicular to the through hole. Therefore, when the limiting component cooperates with the housing, end cover or seal through the first "U" shaped groove and is inserted into the preset installation position through the assembly groove, the axial movement of the through hole of the limiting component will also be restricted. Thus, the first "U" shaped groove and the assembly groove can not only completely restrict the movement space of the limiting component and increase the stability of the installation position of the limiting component and the stability of the heating wire position, but also maintain the uniformity of force on each position of the limiting component by the symmetrical first "U" shaped groove and the assembly groove. 3. In scenarios where the heating wire needs to be protected by a limiting component, the user first places the heating wire at the bottom of the first "U"-shaped groove. Next, the user rotates the limiting component so that both sides of the heating wire pass through the second and third "U"-shaped grooves, respectively, which are connected to the first "U"-shaped groove. The heating wire is then positioned perpendicular to the first "U"-shaped groove, and is located within the through-hole. Next, the user places the limiting component and the heating wire together in the limiting groove, ensuring that the axial direction of the limiting component's through-hole aligns with the axial direction of the limiting groove. This limits the limiting component in all directions except for its upper end and the two ends of its through-hole. Finally, the user connects the limiting component to the heating component by covering it with the heating end component, thus ensuring the upper end of the limiting component is protected. The heating end is also limited by the heating end component. Through the special groove design on the limiting component, the user does not need to touch or exert force on the heating wire. Simply place the limiting component close to the heating wire and rotate it to easily hide most of the surface of the heating wire inside the limiting component. At this time, the movement of the heating wire in the up, down, left and right directions is restricted by the limiting component. By placing the heating wire and the limiting component together into the limiting groove or taking them out together, the limiting component always wraps around the surface of the heating wire during the installation, operation and disassembly processes, always protecting the heating wire. Moreover, the limiting component is also almost omnidirectionally restricted by the limiting groove and the heating end component, so that the limiting component is stably fixed in the limiting groove. Therefore, the heating wire is also protectively and stably confined in the limiting groove. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the limiting component in this embodiment; Figure 2This is a front view of the limiting member in this embodiment; Figure 3 for Figure 2 A cross-sectional view along the direction shown in AA; Figure 4 for Figure 2 The right view; Figure 5 This is a schematic diagram of the heating component in Embodiment 2; Figure 6 This is a partial exploded view of some of the limiting components in Embodiment 2; Figure 7 for Figure 6 A magnified view of part of Figure I; Figure 8 This is a schematic diagram of the sealing element in Embodiment 2; Figure 9 This is a schematic diagram of the heating end component in Embodiment 2.

[0027] Figure label: 1. Limiting component; 11. First vertical plate; 12. Second vertical plate; 13. Horizontal plate; 14. First "U" shaped groove; 141. Sealing protrusion; 15. Second "U" shaped groove; 16. Third "U" shaped groove; 17. Through hole; 18. Groove; 19. Assembly groove; 2. Heating tube assembly; 21. Heating component; 211. Limiting groove; 212. Assembly protrusion; 213. First sealing groove; 22. Heating end component; 221. Second sealing groove; 23. First heating pipe; 231. First heating wire; 24. Second heating pipe; 241. Second heating wire; 3. Sealing component; 4. Heating assembly; 41. First heating assembly; 42. Second heating assembly. Detailed Implementation

[0028] The following is in conjunction with the appendix Figures 1-9 This application will be described in further detail.

[0029] Example 1 This application discloses a limiting member 1.

[0030] Reference Figures 1-9 It includes a first vertical plate portion 11, a second vertical plate portion 12 and a horizontal plate portion 13. One end of the horizontal plate portion 13 is integrally formed with the first vertical plate portion 11 and the other end is integrally formed with the second vertical plate portion 12, so that the first vertical plate portion 11, the second vertical plate portion 12 and the horizontal plate portion 13 are approximately "U" shaped, and the "U" shaped groove is called the first "U" shaped groove 14.

[0031] A second "U"-shaped groove 15 is provided on the rear side of the first vertical plate portion 11. The opening direction of the second "U"-shaped groove 15 is perpendicular to the opening direction of the first "U"-shaped groove 14. The second "U"-shaped groove 15 is connected to the first "U"-shaped groove 14. A third "U"-shaped groove 16 is provided on the front side of the second vertical plate portion 12. The opening direction of the third "U"-shaped groove 16 is opposite to the opening direction of the second "U"-shaped groove 15. The third "U"-shaped groove 16 is connected to the first "U"-shaped groove 14. The first "U"-shaped groove 14, the second "U"-shaped groove 15 and the third "U"-shaped groove 16 form a "Z" shape with the diagonal line changing to the vertical line. So that when viewed from the right end of the limiting member 1, the first "U"-shaped groove 14, the second "U"-shaped groove 15 and the third "U"-shaped groove 16 together form a through hole 17, and the through hole 17 is perpendicular to the first "U"-shaped groove 14.

[0032] In scenarios where the user needs to protect the heating wire with the limiting member 1, firstly, the user places the heating wire at the bottom of the first "U"-shaped groove 14. Secondly, the user rotates the limiting member 1 so that the two sides of the heating wire are rotated into the second "U"-shaped groove 15 and the third "U"-shaped groove 16, which are connected to the first "U"-shaped groove 14, respectively. Then, the heating wire is in a position perpendicular to the first "U"-shaped groove 14. At this time, the heating wire is located in the through hole 17. Finally, the user places the limiting member 1 and the heating wire together at the position where the heating wire needs to be limited. Due to the special groove design on the limiting member 1, the user does not need to touch or exert force on the heating wire. Simply placing the limiting member 1 close to the heating wire and rotating it can easily hide most of the surface of the heating wire inside the limiting member 1, preventing the heating wire from being exposed at the connection end. The surface-mounted structure helps ensure the integrity of the heating wire after installation. Furthermore, the movement of the heating wire in all directions (up, down, left, right) is restricted by the limiting component 1, which helps maintain the stability of the heating wire's position and shape. If the user needs to install or remove the heating wire from a preset position, they only need to place the heating wire and the limiting component 1 together into or remove them together. This ensures that the limiting component 1 always wraps around the surface of the heating wire during installation, operation, and disassembly, protecting it. Consequently, the shape of the heating wire is not only unaffected by the limiting component 1 but also remains unchanged during installation, guaranteeing the uniformity and stability of the heating. In scenarios where the limiting component 1 is used, the user can also replace the heating wire with other wiring such as wires for the limiting installation.

[0033] Furthermore, in this embodiment, the lower middle part of the first "U"-shaped groove 14 is integrally formed with a sealing protrusion 141. For the first "U"-shaped groove 14, the lower part of the first "U"-shaped groove 14 participates in the formation of the through hole 17, but does not participate in the connection. This is because it is necessary to ensure that the heating wire has some relatively free movement space and to limit the heat of the heating wire from being unnecessarily conducted to other places. Therefore, only the upper middle part of the first "U"-shaped groove 14 participates in the limiting connection. The sealing protrusion 141 is set in the lower middle part of the first "U"-shaped groove 14. On the one hand, by setting a step in the area participating in the limiting connection, the sealing effect of the limiting connection can be increased. On the other hand, the sealing protrusion 141 at the lower part can not only facilitate the demolding of the limiting member 1, but also further block the area of ​​the heating wire exposed outside the limiting member 1, increase the contact area between the heating wire and the limiting member 1, and thus increase the strength of the heating wire being limited, which is beneficial to improving the stability of the position and shape of the heating wire.

[0034] Furthermore, in this embodiment, one end of the horizontal plate portion 13 is integrally formed with the first vertical plate portion 11, and the other end is integrally formed with the second vertical plate portion 12, so that the first vertical plate portion 11, the second vertical plate portion 12 and the horizontal plate portion 13 form an "H" shape, and the groove in the upper part of the "H" shape is called the first "U" shaped groove 14, and the groove in the lower part is called the assembly groove 19. The opening direction of the assembly groove 19 is opposite to the opening direction of the first "U" shaped groove 14.

[0035] When the heating wire is installed in the through hole 17 of the limiting member 1, the limiting member 1, together with the heating wire, is placed in the preset position. At this time, in order to ensure the integrity of the heating wire, the axial direction of the through hole 17 of the limiting member 1 should be consistent with the two open ends of the preset position. At this time, except for the upper end and the two axial ends of the through hole 17 of the limiting member 1, the rest of the limiting member 1 is in contact with the preset position. That is, except for the upper end and the two axial ends of the through hole 17 of the limiting member 1, the other directions of the limiting member 1 are already limited. Moreover, the upper end of the limiting member 1 will also be limited after being connected to the housing, end cover, or sealing member 3. At this time, only the through hole 17 of the limiting member 1 remains. 7. In the axial direction, the first "U" shaped groove 14 and the assembly groove 19 are both set perpendicular to the through hole 17. Therefore, when the limiting member 1 cooperates with the housing, end cover or sealing member 3 through the first "U" shaped groove 14 and is inserted into the preset installation position through the assembly groove 19, the axial movement of the limiting member 1 through the through hole 17 will also be restricted. Therefore, the first "U" shaped groove 14 and the assembly groove 19 can not only completely restrict the movement space of the limiting member 1 and increase the stability of the installation position of the limiting member 1 and the stability of the heating wire position, but also the first "U" shaped groove 14 and the assembly groove 19 in symmetrical positions can maintain the uniformity of force on each position of the limiting member 1.

[0036] Furthermore, in this embodiment, the front and rear faces of the horizontal plate portion 13 are both provided with grooves 18, and the first vertical plate portion 11 and the second vertical plate portion 12 are both provided with chamfers near the grooves 18. Since the limiting member 1 and the heating wire are placed in the preset installation position in a plug-in manner, by providing grooves 18 in the horizontal plate portion 13, the contact area between the limiting member 1 and the preset installation position can be reduced, thereby reducing the friction between the limiting member 1 and the preset position, which facilitates the installation and removal of the limiting member 1. Providing chamfers in the first vertical plate portion 11 and the second vertical plate portion 12 can also reduce the contact area between the limiting member 1 and the preset position, which facilitates the installation and removal of the limiting member 1. It can also remove the sharp parts of the first vertical plate portion 11 and the second vertical plate portion 12, reducing the damage caused by the workpieces colliding with each other.

[0037] Furthermore, in this embodiment, the height of the assembly groove 19 is less than the height of the upper part of the first "U" shaped groove 14. Since the lower part of the first "U" shaped groove 14 participates in the formation of the through hole 17 and does not participate in the connection, the lower part of the first "U" shaped groove 14 participates in the connection. Moreover, the position of the first "U" shaped groove 14 is close to the end of the preset position. The end of the preset position often needs to be sealed. Therefore, the first "U" shaped groove 14 not only needs to be limited and connected, but also needs to be sealed. (Limited and sealed connections can be performed at once by the sealing element 3 or other components.) The assembly groove 19 is far from the end to be sealed at the preset position, so only limited connection is required. Therefore, the height of the upper part of the first "U" shaped groove 14 is greater than or equal to the height of the assembly groove 19.

[0038] Furthermore, in this embodiment, the present invention does not impose any particular restrictions on the position and range of the sealing protrusion 141 on the inner wall of the first "U" shaped groove 14. Any method known to those skilled in the art that enables the first "U" shaped groove 14 to achieve sealing insertion or interference connection with other workpieces is acceptable. Those skilled in the art can select and adjust according to specific application conditions, raw material conditions and product requirements.

[0039] Furthermore, in this embodiment, the present invention does not impose any particular restrictions on the specific form of the connection between the first "U" shaped groove 14, the second "U" shaped groove 15, and the third "U" shaped groove 16, or on their specific positional relationship. Any method known to those skilled in the art can be used to place the heating wire in the first "U" shaped groove 14 and to position the heating wire at the through hole 17 perpendicular to the first "U" shaped groove 14 by rotating the limiting member 1. Those skilled in the art can select and adjust according to the specific application, raw material conditions, and product requirements.

[0040] Example 2 This application discloses a limiting component for electric water pipes.

[0041] Reference Figures 1-9The heating tube assembly includes a heating tube assembly 2 and a limiting member 1. The heating tube assembly 2 includes a heating middle part 21 and a heating end part 22. A limiting groove 211 is formed at the upper end of the heating middle part 21. The limiting groove 211 cooperates with the limiting member 1. The limiting member 1 is located at the limiting groove 211. The heating end part 22 covers the limiting member 1 and is screwed to the upper end of the heating middle part 21. The lower end of the heating middle part 21 is connected to another heating end part 22.

[0042] The limiting member 1 includes a first vertical plate portion 11, a second vertical plate portion 12, and a horizontal plate portion 13. One end of the horizontal plate portion 13 is integrally formed with the first vertical plate portion 11, and the other end is integrally formed with the second vertical plate portion 12, so that the first vertical plate portion 11, the second vertical plate portion 12, and the horizontal plate portion 13 form a "U" shape, and the "U" shaped groove is called the first "U" shaped groove 14. A second "U"-shaped groove 15 is provided on the rear side of the first vertical plate portion 11. The opening direction of the second "U"-shaped groove 15 is perpendicular to the opening direction of the first "U"-shaped groove 14. The second "U"-shaped groove 15 is connected to the first "U"-shaped groove 14. A third "U"-shaped groove 16 is provided on the front side of the second vertical plate portion 12. The opening direction of the third "U"-shaped groove 16 is opposite to the opening direction of the second "U"-shaped groove 15. The third "U"-shaped groove 16 is connected to the first "U"-shaped groove 14. The first "U"-shaped groove 14, the second "U"-shaped groove 15 and the third "U"-shaped groove 16 form a "Z" shape with the diagonal line changing to the vertical line. So that when viewed from the right end of the limiting member 1, the first "U"-shaped groove 14, the second "U"-shaped groove 15 and the third "U"-shaped groove 16 together form a through hole 17, and the through hole 17 is perpendicular to the first "U"-shaped groove 14.

[0043] In scenarios where the user needs to protect the heating wire with the limiting member 1, firstly, the user places the heating wire at the bottom of the first "U"-shaped groove 14. Secondly, the user rotates the limiting member 1 so that the two sides of the heating wire pass through the second "U"-shaped groove 15 and the third "U"-shaped groove 16, which are connected to the first "U"-shaped groove 14, respectively. Then, the heating wire is positioned perpendicular to the first "U"-shaped groove 14, and at this time, the heating wire is located within the through hole 17. Next, the user places the limiting member 1 and the heating wire together in the limiting groove 211, so that the axial direction of the through hole 17 of the limiting member 1 is consistent with the axial direction of the limiting groove 211. Thus, the limiting member 1 is limited in all directions except for the upper end and the two ends of the axial direction of the through hole 17 of the limiting member 1. Finally, the user connects the limiting member 1 to the heating component 21 by covering it with the heating end component 22, so that the limiting member... The upper end of the heating element 1 is also limited by the heating end component 22. Through the special groove design on the limiting component 1, the user does not need to touch or forcefully touch the heating wire. He only needs to put the limiting component 1 close to the heating wire and rotate it to easily hide most of the surface of the heating wire inside the limiting component 1. At this time, the movement of the heating wire in the up, down, left and right directions is restricted by the limiting component 1. By putting the heating wire and the limiting component 1 into the limiting groove 211 together or taking them out of the limiting groove 211 together, the limiting component 1 always wraps around the surface of the heating wire and protects the heating wire, whether it is during the installation, operation or disassembly process. The limiting component 1 is also almost omnidirectionally limited by the limiting groove 211 and the heating end component 22, so that the limiting component 1 is stably fixed in the limiting groove 211. Therefore, the heating wire is also protected and stably limited in the limiting groove 211.

[0044] Furthermore, in this embodiment, the limiting member 1 can also be in other forms. One end of the horizontal plate portion 13 is integrally formed with the first vertical plate portion 11, and the other end is integrally formed with the second vertical plate portion 12, so that the first vertical plate portion 11, the second vertical plate portion 12 and the horizontal plate portion 13 form an "H" shape. The groove in the upper part of the "H" shape is called the first "U" shaped groove 14, and the groove in the lower part is called the assembly groove 19. The opening direction of the assembly groove 19 is opposite to the opening direction of the first "U" shaped groove 14.

[0045] The heating component 21 has an assembly protrusion 212 in the limiting groove 211. The assembly protrusion 212 is perpendicular to the limiting groove 211 and cooperates with the assembly groove 19. The upper end of the heating component 21 also has a first sealing groove 213. The first sealing groove 213 communicates with the limiting groove 211, and when the limiting component 1 cooperates with the limiting groove 211, the first sealing groove 213 communicates with the first "U" shaped groove 14. The heating end component 22, which cooperates with the upper end of the heating component 21, has a second sealing groove 221. A sealing component 3 is inserted into both the first sealing groove 213 and the first "U" shaped groove 14. The lower part of the sealing component 3 cooperates with the upper middle part of the first "U" shaped groove 14 and the first sealing groove 213, and the upper part of the sealing component 3 cooperates with the second sealing groove 221 of the heating end component 22.

[0046] After the limiting member 1, together with the heating wire, is placed in the limiting groove 211, the axial direction of the through hole 17 of the limiting member 1 is consistent with the two open ends of the preset position. The bottom end and two sides of the limiting member 1 are limited by the displacement of the inner wall of the limiting groove 211, and the upper end of the limiting member 1 is limited by the sealing member 3 and the heating end component 22. Since the through hole 17 is perpendicular to the assembly groove 19 and the first "U" shaped groove 14, the protrusion 212 to be assembled mates with the assembly groove 19 and the first "U" shaped groove 14. After 14 is engaged with the seal 3, the displacement of the limiting member 1 in the direction of the through hole 17 is also restricted. The first "U" shaped groove 14, the assembly groove 19, the assembly protrusion 212 and the seal 3 can not only completely restrict the movement space of the limiting member 1, increase the stability of the installation position of the limiting member 1, and increase the stability of the heating wire position, but also the first "U" shaped groove 14 and the assembly groove 19 in symmetrical positions can maintain the uniformity of force on each position of the limiting member 1, which is beneficial to extending the service life of the limiting member 1.

[0047] Furthermore, in this embodiment, the lower middle part of the first "U"-shaped groove 14 is integrally formed with a sealing protrusion 141, making the inner width of the lower middle part of the first "U"-shaped groove 14 smaller than the outer width of the sealing member 3. For the first "U"-shaped groove 14, the lower part of the first "U"-shaped groove 14 participates in the formation of the through hole 17, but does not participate in the connection. This is because it is necessary to ensure that the heating wire has some relatively free space for movement and to limit the heat of the heating wire from being unnecessarily conducted to other places. Therefore, only the upper middle part of the first "U"-shaped groove 14 participates in the limiting connection. The sealing protrusion 141 is set in the lower middle part of the first "U"-shaped groove 14. On the one hand, by setting a step in the area participating in the limiting connection, the sealing effect of the limiting connection can be increased. On the other hand, the sealing protrusion 141 at the lower part can not only facilitate the demolding of the limiting member 1, but also further block the area of ​​the heating wire exposed outside the limiting member 1, increase the contact area between the heating wire and the limiting member 1, and thus increase the strength of the heating wire being limited, which is beneficial to improving the stability of the position and shape of the heating wire.

[0048] Furthermore, in this embodiment, grooves 18 are provided on both the front and rear faces of the horizontal plate portion 13, and chamfers are provided on both the first vertical plate portion 11 and the second vertical plate portion 12 near the grooves 18. The limiting member 1, together with the heating wire, is inserted into the limiting groove 211. By providing grooves 18 on both the front and rear faces of the horizontal plate portion 13, the contact area between the limiting member 1 and the groove wall of the limiting groove 211 can be reduced, thereby reducing the friction between the limiting member 1 and the groove wall of the limiting groove 211. This facilitates the installation of the limiting member 1 into or out of the heating tube assembly 2. The chamfers on the first vertical plate portion 11 and the second vertical plate portion 12 can also reduce the contact area between the limiting member 1 and the groove wall of the limiting groove 211, facilitating the installation and removal of the limiting member 1. Additionally, the sharp parts of the first vertical plate portion 11 and the second vertical plate portion 12 can be removed, reducing damage from collisions between the workpieces.

[0049] Furthermore, in this embodiment, the heating tube assembly 2 is provided with a heating pipe, which includes a first heating pipe 23 and a second heating pipe 24. A limiting groove 211 is provided to connect the first heating pipe 23 and the second heating pipe 24. A heating component 4 is provided inside the heating pipe, which includes a first heating component 41 and a second heating component 42. The first heating component 41 is placed inside the first heating pipe 23, and the second heating component 42 is placed inside the second heating pipe 24. The first heating component 41 includes a first heating wire 231, and the second heating component 42 includes a second heating wire 241. The first heating wire 231 and the second heating wire 241 are the same heating wire, collectively referred to as the heating wire, such that one end of the heating wire is located inside the first heating pipe 23, and the other end passes through the limiting groove 211 and is located inside the second heating pipe 24. When the limiting member 1 is located inside the limiting groove 211, the heating wire... One end is located inside the first heating pipe 23, and the other end passes through the through hole 17 of the limiting member 1 and is located inside the second heating pipe 24. When installing the first heating component 41 and the second heating component 42, the user first places the limiting member 1 close to the heating wire and installs the heating wire inside the limiting member 1 by rotating the limiting member 1. Then, the user places the first heating component 41 and the second heating component 42 into the first heating pipe 23 and the second heating pipe 24. During the installation of the first heating component 41 and the second heating component 42, the limiting member 1 always protects the heating wire. Similarly, when the user needs to remove the first heating component 41 and the second heating component 42, the user also removes the limiting member 1 together. This allows the limiting member 1 to be conveniently connected to the heating wire to protect it, and it can also restrict its own displacement and the displacement of the heating wire in all directions by cooperating with the limiting groove 211.

[0050] Furthermore, in this embodiment, the sealing element 3 can be removed, so that the assembly protrusion 212 cooperates with the assembly groove 19. The heating end component 22 located above has an end protrusion integrally formed at one end near the heating component 21. The end protrusion cooperates with the upper middle part of the first "U" shaped groove 14. After the limiting component 1 is limited in multiple directions by the shell, only the upper end face is not limited. The limiting component 1 can complete its own multi-directional limiting by cooperating with the heating end component 22. The function of the sealing element 3 is to isolate water overflow at the limiting component 1.

[0051] Furthermore, in this embodiment, the present invention does not impose any particular restrictions on the position and range of the sealing protrusion 141 on the inner wall of the first "U" shaped groove 14. Any method known to those skilled in the art that enables the first "U" shaped groove 14 to achieve sealing insertion or interference connection with other workpieces is acceptable. Those skilled in the art can select and adjust according to specific application conditions, raw material conditions and product requirements.

[0052] Furthermore, in this embodiment, the present invention does not impose any particular limitation on the number of heating pipes and heating components 4. Any heating component 4 that can be used to achieve the sharing of heating wire by two or more heating components 4, and that can be removed or installed, can be used. Those skilled in the art can select and adjust according to specific application conditions, raw material conditions and product requirements.

[0053] It should be noted that the various embodiments of this application can be arbitrarily combined into new embodiments, provided that the solutions do not conflict and the technical solutions can coexist.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A stopper, characterized by: It includes a first vertical plate (11), a second vertical plate (12), and a horizontal plate (13). One end of the horizontal plate (13) is connected to the first vertical plate (11), and the other end is connected to the second vertical plate (12). The first vertical plate (11), the second vertical plate (12), and the horizontal plate (13) together form a first "U" shaped groove (14). A second "U" shaped groove (15) is provided on the first vertical plate (11). The opening direction of the second "U" shaped groove (15) is perpendicular to the opening direction of the first "U" shaped groove (14). A third "U" shaped groove (16) is provided on the second vertical plate (12). The opening direction of the third "U" shaped groove (16) is opposite to the opening direction of the second "U" shaped groove (15). The bottoms of the first "U" shaped groove (14), the second "U" shaped groove (15), and the third "U" shaped groove (16) are connected and form a through hole (17).

2. The position-limiting piece according to claim 1, characterized in that: The first vertical plate portion (11), the second vertical plate portion (12) and the horizontal plate portion (13) also jointly form an assembly groove (19), the opening direction of the assembly groove (19) being opposite to the opening direction of the first "U" shaped groove (14).

3. The position-limiting piece according to claim 2, characterized in that: The horizontal plate (13) has a groove (18) on the end face between the first "U" shaped groove (14) and the assembly groove (19).

4. The position-limiting piece according to claim 1, characterized in that: The lower part of the first "U"-shaped groove (14) is provided with a sealing protrusion (141).

5. The position-limiting piece according to claim 4, characterized in that: The first vertical plate (11), the second vertical plate (12) and the horizontal plate (13) also form an assembly groove (19). The opening direction of the assembly groove (19) is opposite to the opening direction of the first "U" shaped groove (14). The height of the assembly groove (19) is less than or equal to the height of the upper part of the first "U" shaped groove (14).

6. A limiting assembly for an electrically heated water pipe, characterized by: The heating tube assembly (2) includes a heating tube assembly (2) and a limiting member (1) as described in any one of claims 1-5. The heating tube assembly (2) includes a heating middle part (21) and a heating end part (22). The two ends of the heating middle part (21) are respectively connected to the two heating end parts (22). A limiting groove (211) is provided at one end of the heating middle part (21), and the limiting groove (211) cooperates with the limiting member (1).

7. A limiting assembly for an electrically heated water pipe according to claim 6, characterized in that: The heating component (21) has an assembly protrusion (212) in the limiting groove (211). The assembly protrusion (212) is perpendicular to the limiting groove (211). The limiting component (1) has an assembly groove (19). The assembly protrusion (212) cooperates with the assembly groove (19). The heating end component (22) has an end protrusion. The end protrusion cooperates with the upper middle part of the first "U" shaped groove (14).

8. The limit assembly for an electric hot water pipe according to claim 6, characterized by: The heating component (21) has an assembly protrusion (212) in the limiting groove (211). The assembly protrusion (212) is perpendicular to the limiting groove (211). The limiting component (1) has an assembly groove (19). The assembly protrusion (212) cooperates with the assembly groove (19). One end of the heating component (21) has a first sealing groove (213). The first sealing groove (213) communicates with the first "U" shaped groove (14). The first sealing groove (213) and the first "U" shaped groove (14) are jointly provided with a sealing element (3). The sealing element (3) cooperates with the upper middle part of the first "U" shaped groove (14) and the first sealing groove (213).

9. The limit assembly for an electric hot water pipe according to claim 6, characterized by: The heating tube assembly (2) has a heating pipe, and the heating pipe has a heating component (4). The limiting groove (211) is opened between the heating pipes and is connected to the heating pipe. The heating component (4) includes a heating wire, which passes through the through hole (17).

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