Sealing insulation joint

Abstract

The utility model relates to the technical field of insulating joints, in particular to a sealed insulating joint, which comprises a hollow shell, a first insert, a second insert and an insulating part, one end of the insulating part is clamped with the first insert, and the other end of the insulating part is clamped with the second insert. The first insert and the second insert are arranged in the shell, the insulating part, the first insert and the second insert form a combined part, the combined part is arranged in the shell, the second insert partially protrudes out of the shell, and the combined part and the shell are integrally formed by adopting an injection molding process. The purpose of the utility model is to provide the sealing insulation joint for overcoming the defects in the prior art, the metal insert and the insulation material are clamped and limited through the clamping part, the connection is tight, and the sealing performance is prevented from losing efficacy.

Description

Technical Field

[0001] The utility model relates to the technical field of insulating joints, and more particularly to a sealed insulating joint. Background Art

[0002] Electric shock wall technology is a safety measure specifically designed for electric water heaters to prevent electric shock accidents during operation, ensuring user safety and, in extreme cases, protecting the user's life. The electric shock wall works by utilizing the inherent electrical resistance of water through a specially designed pipe structure, increasing the water's resistance and attenuating the current. This technology creates a permanent resistor within the water heater, reducing the current flowing through the body under abnormal conditions, thereby protecting the user.

[0003] In practice, the inlet and outlet pipes of a water heater are typically connected via metal bellows. If the water heater is not fully grounded, the water connectors at the inlet and outlet will become electrically charged, forming a current loop when connected to the metal bellows. Insulating joints, as key connection components, isolate the current, effectively preventing leakage and protecting people from the risk of electric shock. Insulating joints typically consist of insulating material and metal inserts. The insulating material blocks the passage of current, while the metal insert ensures the reliability of the connection. During assembly on the production line, the mechanical force of the installation tools can loosen the interface between the metal insert and the insulating material, causing the sealing performance of the interface between the metal insert and the insulating material to fail. This performance failure can cause the entire electric water heater to leak, resulting in significant maintenance costs. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art that the overall mechanical strength of the insulating joint composed of a metal insert and an insulating material is low, which easily leads to failure of the sealing performance. The utility model provides a sealed insulating joint, in which the metal insert and the insulating material are clamped and limited by a clamping part, and the connection is tight to prevent failure of the sealing performance.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A sealed insulating joint is provided, which comprises a hollow shell, a first insert, a second insert, and an insulating member. One end of the insulating member is clamped to the first insert, and the other end is clamped to the second insert to form an assembly. The assembly is installed inside the shell, and the second insert partially protrudes from the shell. The assembly and the shell are integrally formed using an injection molding process.

[0007] One end of the insulating part of the utility model is clamped with the first insert, and the other end is clamped with the second insert. The first insert, the insulating part and the second insert are clamped with each other to form an assembly. The insulating part and the first insert and the second insert in the assembly are clamped and limited, the contact area is increased, and the stability and firmness of the connection are enhanced. The assembly and the shell are integrally formed by the injection molding process, and are tightly combined to prevent the sealing performance from failing due to looseness or instability of the bonding interface.

[0008] Preferably, a first clamping portion is radially provided on the inner wall of the first insert close to the insulating member, and a second clamping portion is provided on the end of the insulating member close to the first insert, and the first clamping portion and the second clamping portion are clamped and limited.

[0009] Preferably, a third clamping portion is provided at the end of the first insert close to the insulating member, and a fourth clamping portion is radially provided on the outer wall of the insulating member close to the first insert, and the third clamping portion and the fourth clamping portion are clamped and limited.

[0010] Preferably, a fifth clamping portion is radially provided on the inner wall of the second insert close to the insulating member, and a sixth clamping portion is radially provided on the outer wall of the insulating member close to the second insert, and the fifth clamping portion and the sixth clamping portion are clamped and limited.

[0011] Preferably, a seventh clamping portion is provided at the end of the second insert close to the insulating member, and an eighth clamping portion is radially provided on the outer wall of the insulating member close to the second insert, and the seventh clamping portion and the eighth clamping portion are clamped and limited.

[0012] Preferably, a ninth clamping portion is radially provided on the outer wall where the first insert is connected to the outer shell, and a tenth clamping portion is radially provided on the inner wall where the outer shell is connected to the first insert, and the ninth clamping portion and the tenth clamping portion are clamped and limited.

[0013] Preferably, an eleventh clamping portion is radially provided on the outer wall where the second insert is connected to the shell, and a twelfth clamping portion is radially provided on the inner wall where the shell is connected to the first insert, and the eleventh clamping portion and the twelfth clamping portion are clamped and limited.

[0014] Preferably, the end of the second insert protruding from the housing is provided with an external thread.

[0015] Preferably, a first limiting step is provided at an end of the insulating member close to the second insert, and a second limiting step is provided at an end of the second insert away from the first insert.

[0016] Preferably, the inner diameter of the first insert is larger than the inner diameter of the insulating component.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] (1) The insulating component of the present invention is clamped and limited with the first insert and the second insert, and the connection is tight, which prevents the sealing performance from failing due to loosening of the bonding interface.

[0019] (2) The utility model is provided with a first limit step and a second limit step. When the operator is installing, the second insert is against the first limit step or the external component is against the first limit step, and the installation position is accurate.

[0020] (3) The first insert, the second insert, and the insulating member of the present invention are integrally formed into an assembly by a vulcanization process, thereby avoiding the seams that may occur in traditional assembly methods and providing better sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a sealed insulating joint of the utility model;

[0022] Figure 2 This is a schematic cross-sectional structural diagram of a sealed insulating joint of the present invention;

[0023] Figure 3 for Figure 2 Enlarged view of point A.

[0024] The icon marks are explained as follows:

[0025] 1. Housing; 11. Tenth clamping portion; 12. Twelfth clamping portion; 2. First insert; 21. First clamping portion; 22. Third clamping portion; 23. Ninth clamping portion; 24. Thirteenth clamping portion; 3. Second insert;

[0026] 31. Fifth clamping portion; 32. Seventh clamping portion; 33. Eleventh clamping portion; 34. Fourteenth clamping portion;

[0027] 35. Second limiting step; 4. Insulating member; 41. Second clamping portion; 42. Fourth clamping portion; 43. Sixth clamping portion; 44. Eighth clamping portion; 45. First limiting step; 5. Assembly. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Example 1

[0031] like Figures 1 to 3The figure shows a first embodiment of a sealed insulating joint of the present invention, comprising a hollow shell 1, a first insert 2, a second insert 3, and an insulating member 4. The first insert 2 and the insulating member 4 are snap-fitted to the first insert 2 at one end and snap-fitted to the second insert 3 at the other end to form an assembly 5. The assembly 5 is mounted inside the shell 1, and the second insert 3 partially protrudes from the shell 1. The assembly 5 and the shell 1 are integrally formed using an injection molding process. The insulating member 4 of the present invention is snap-fitted to the first insert 2 at one end and snap-fitted to the second insert 3 at the other end. The first insert 2, the insulating member 4, and the second insert 3 are snap-fitted to each other to form the assembly 5. The insulating member 4 in the assembly 5 is snap-fitted to the first insert 2 and the second insert 3, thereby increasing the contact area and enhancing the stability and firmness of the connection. The assembly 5 and the shell 1 are integrally formed using an injection molding process, tightly bonded together, and preventing sealing failure due to loose or unstable bonding interfaces. In this embodiment, the first insert 2 and the second insert 3 are made of metal material, and the first insert 2 and the second insert 3 are separated by the insulating member 4 to achieve an insulation function. The insulating member 4 is made of rubber. The first insert 2, the insulating member 4 and the second insert 3 are integrally formed by a vulcanization process, and are in close and compact contact with each other, thereby reducing wear and loosening of the product during use, improving product quality, durability and reliability, and ensuring long-term airtightness of the product. In addition, the integral vulcanization molding reduces pollution and waste in the production process, reducing production costs. At the same time, the integral vulcanization molding process does not require additional template preparation requirements, thereby reducing production time and costs. In addition, the bonding performance of the vulcanized rubber and the material can be improved through specific surface treatment methods. The housing 1 and the assembly 5 are produced by injection molding, and one-piece injection molding can achieve continuous and high-speed injection molding, thereby improving production efficiency, because the entire injection molding process (such as injection molding, cooling, demolding, etc.) is carried out continuously, reducing the production cycle. By merging the housing 1 and the assembly 5 into a whole during the injection molding process, the assembly process and connection points can be reduced, and reliability and performance can be improved. From a cost perspective, injection molding is a highly automated production process that can quickly and accurately produce large quantities of products, reduce material waste, improve resource utilization, and reduce waste and energy costs. In addition, injection molding is highly automated, which improves production efficiency and reduces labor costs. It can operate continuously with minimal human intervention, ensuring consistent product quality and high productivity.

[0032] When the utility model is connected to the water heater, the sealed insulating joint is connected to the original tube of the bellows, which prevents the current from forming a loop on the bellows and effectively avoids the possibility of leakage. The connection is stable and firm, with strong bearing capacity, simple structure and easy installation. The clip-on fixing method can simplify the assembly process and ensure the accurate connection position, thereby improving production efficiency.

[0033] The first clamping portion 21 of the utility model is radially provided on the inner wall of the first insert 2 close to the insulating member 4, and the second clamping portion 41 is provided on the end of the insulating member 4 close to the first insert 2. The first clamping portion 21 and the second clamping portion 41 are clamped and limited. In this embodiment, the first clamping portion 21 is a groove, and the second clamping portion 41 matched therewith is a protrusion. The first clamping portion 21 and the second clamping portion 41 are clamped and limited. The clamping fit during installation can ensure that the connection position of the first insert 2 and the insulating member 4 is accurate, and also make the first insert 2 and the insulating member 4 tightly connected to prevent loosening. The first insert 2 of the present invention is provided with a third clamping portion 22 at the end portion close to the insulating member 4, and the insulating member 4 is radially provided with a fourth clamping portion 42 on the outer wall close to the first insert 2. The third clamping portion 22 and the fourth clamping portion 42 are clamped and limited. In this embodiment, the third clamping portion 22 is a protrusion and the fourth clamping portion 42 is a groove. The clamping and limiting of the third clamping portion 22 and the fourth clamping portion 42 can ensure that the connection between the first insert 2 and the insulating member 4 is tighter and not easy to loosen, thereby preventing the sealing performance from failing due to loosening of the bonding interface.

[0034] The fifth clamping portion 31 of the utility model is radially provided on the inner wall of the second insert 3 close to the insulating part 4, and the sixth clamping portion 43 is radially provided on the outer wall of the insulating part 4 close to the second insert 3. The fifth clamping portion 31 and the sixth clamping portion 43 are clamped and limited. In this embodiment, the fifth clamping portion 31 is a protrusion, and the sixth clamping portion 43 is a groove. The fifth clamping portion 31 and the sixth clamping portion 43 are clamped and matched to limit the position. The clamping match during installation can ensure that the connection position of the second insert 3 and the insulating part 4 is accurate, and can also ensure that the second insert 3 and the insulating part 4 are tightly connected and not easy to loosen, thereby preventing the sealing performance from failing due to loosening of the bonding interface. A seventh clamping portion 32 is provided at the end of the second insert 3 close to the insulating member 4, and an eighth clamping portion 44 is radially provided on the outer wall of the insulating member 4 close to the second insert 3. The seventh clamping portion 32 and the eighth clamping portion 44 are clamped and limited. In this embodiment, the seventh clamping portion 32 is a protrusion, and the eighth clamping portion 44 is a groove. The seventh clamping portion 32 and the eighth clamping portion 44 are clamped and matched to limit the position, so that the connection between the second insert 3 and the insulating member 4 is tighter and not easy to loosen.

[0035] The outer wall where the first insert 2 of the present invention is connected to the shell 1 is radially provided with a ninth clamping portion 23, and the inner wall where the shell 1 is connected to the first insert 2 is radially provided with a tenth clamping portion 11. The ninth clamping portion 23 and the tenth clamping portion 11 are clamped and limited. As an embodiment of the present invention, the ninth clamping portion 23 is a protrusion and the tenth clamping portion 11 is a groove. The ninth clamping portion 23 and the tenth clamping portion 11 cooperate and limit, so that the first insert 2 and the shell 1 are more tightly connected to prevent loosening of the bonding interface. In this embodiment, the ninth clamping portion 23 is a protrusion and the tenth clamping portion 11 is a groove, but it is not limited to this. Setting the ninth clamping portion 23 as a groove and the tenth clamping portion 11 as a protrusion and the ninth clamping portion 23 and the tenth clamping portion 11 as a clamping and limiting can also achieve the same effect.

[0036] The outer wall of the second insert 3 of the utility model that is connected to the shell 1 is radially provided with an eleventh clamping portion 33, and the inner wall of the shell 1 that is connected to the first insert 2 is radially provided with a twelfth clamping portion 12. The eleventh clamping portion 33 and the twelfth clamping portion 12 are clamped and limited. As an embodiment of the utility model, the eleventh clamping portion 33 is a protrusion, and the twelfth clamping portion 12 is a groove. The eleventh clamping portion 33 and the twelfth clamping portion 12 are clamped and limited, so that the second insert 3 and the shell 1 are more tightly connected to prevent loosening of the bonding interface. In this embodiment, the eleventh clamping portion 33 is a protrusion and the twelfth clamping portion 12 is a groove, but it is not limited to this. Setting the eleventh clamping portion 33 as a groove, the twelfth clamping portion 12 as a protrusion, and the eleventh clamping portion 33 and the twelfth clamping portion 12 as a clamping and limiting can also achieve the same effect.

[0037] The insulating part 4 of the present invention is provided with a first limiting step 45 at the end close to the second insert 3, and the second limiting step 35 is provided at the end of the second insert 3 away from the first insert 2. When the second insert 3 contacts the first limiting step 45 of the insulating part 4 during installation, the operator can understand that the relative position of the second insert 3 and the insulating part 4 is correct, which helps to ensure the relative position accuracy, makes the assembly process simpler and faster, and also facilitates the inspection and adjustment of the relative position of the second insert 3 and the insulating part 4.

[0038] Example 2

[0039] The following is a second embodiment of a sealed insulating joint of the present invention. This embodiment is similar to Example 1, except that a fifth clamping portion 31 is radially provided on the inner wall of the second insert 3 of the present invention near the insulating part 4, and a sixth clamping portion 43 is radially provided on the outer wall of the insulating part 4 near the second insert 3. The fifth clamping portion 31 and the sixth clamping portion 43 are clamped and limited. In this embodiment, the fifth clamping portion 31 is a groove, and the sixth clamping portion 43 is a protrusion. The fifth clamping portion 31 and the sixth clamping portion 43 are clamped and matched to limit the position. The clamping match during installation can ensure that the connection position of the second insert 3 and the insulating part 4 is accurate, and can also ensure that the second insert 3 and the insulating part 4 are tightly connected and not easy to loosen, thereby preventing the sealing performance from failing due to loosening of the bonding interface.

[0040] Example 3

[0041] The following is a third embodiment of a sealed insulating joint of the present invention. This embodiment is similar to embodiment 1, except that the shell 1 of the present invention is a regular prism. This embodiment adopts a regular hexagonal prism as the shell 1, which is suitable for contact with tools such as wrenches, facilitates quick tightening and loosening, improves work efficiency, and distributes force more evenly during tightening and loosening, reduces local stress concentration. In addition, the geometric characteristics of the regular hexagonal shape are simple, easy to design and manufacture, and help reduce production costs. The standardized design simplifies the manufacturing process and facilitates production using an automated production line.

[0042] The inner diameter of the first insert 2 of this utility model is larger than that of the insulating member 4. The first insert 2 is internally threaded. When the operator installs the external component into the first insert 2, the connection is clearly established when the end of the external component abuts the end of the insulating member 4, preventing damage to the first insert 2 caused by excessive assembly. The first insert 2 of this utility model is internally threaded, and the end of the second insert 3 protruding from the housing 1 is externally threaded. The second insert 3 is threadedly connected to the external bellows. The threaded connection is tight, easy to install, and has good sealing performance.

[0043] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A sealed insulating joint, characterized in that: The invention comprises a hollow shell (1), a first insert (2), a second insert (3), and an insulating member (4); one end of the insulating member (4) is clamped with the first insert (2), and the other end is clamped with the second insert (3) to form an assembly (5); the assembly (5) is installed inside the shell (1), and the second insert (3) is partially protruded from the shell (1); the assembly (5) and the shell (1) are integrally formed by an injection molding process.

2. The sealed insulating joint according to claim 1, characterized in that: The first insert (2) is provided with a first clamping portion (21) radially on the inner wall close to the insulating member (4), and the insulating member (4) is provided with a second clamping portion (41) at the end close to the first insert (2), and the first clamping portion (21) and the second clamping portion (41) are clamped and limited.

3. The sealed insulating joint according to claim 2, characterized in that: The first insert (2) is provided with a third clamping portion (22) at the end close to the insulating portion (4), and the insulating portion (4) is provided with a fourth clamping portion (42) radially close to the outer wall of the first insert (2), and the third clamping portion (22) and the fourth clamping portion (42) are clamped and limited.

4. The sealed insulating joint according to claim 1, characterized in that: The second insert (3) is provided with a fifth clamping portion (31) radially on the inner wall close to the insulating member (4), and the insulating member (4) is provided with a sixth clamping portion (43) radially on the outer wall close to the second insert (3), and the fifth clamping portion (31) and the sixth clamping portion (43) are clamped and limited.

5. The sealed insulating joint according to claim 4, characterized in that: The second insert (3) is provided with a seventh clamping portion (32) at the end close to the insulating member (4), and the insulating member (4) is provided with an eighth clamping portion (44) radially on the outer wall close to the second insert (3), and the seventh clamping portion (32) and the eighth clamping portion (44) are clamped and limited.

6. The sealed insulating joint according to any one of claims 1 to 5, characterized in that: A ninth clamping portion (23) is radially provided on the outer wall where the first insert (2) is connected to the outer shell (1), and a tenth clamping portion (11) is radially provided on the inner wall where the outer shell (1) is connected to the first insert (2). The ninth clamping portion (23) and the tenth clamping portion (11) are clamped and limited.

7. The sealed insulating joint according to claim 6, characterized in that: An eleventh clamping portion (33) is radially provided on the outer wall where the second insert (3) is connected to the outer shell (1), and a twelfth clamping portion (12) is radially provided on the inner wall where the outer shell (1) is connected to the first insert (2), and the eleventh clamping portion (33) and the twelfth clamping portion (12) are clamped and limited.

8. The sealed insulating joint according to claim 1, characterized in that: The end of the second insert (3) protruding from the housing (1) is provided with an external thread.

9. The sealed insulating joint according to claim 1, characterized in that: The end of the insulating member (4) close to the second insert (3) is provided with a first limiting step (45), and the end of the second insert (3) away from the first insert (2) is provided with a second limiting step (35).

10. The sealed insulating joint according to claim 1, characterized in that: The inner diameter of the first insert (2) is greater than the inner diameter of the insulating part (4).

Images