Cup-shaped diffusion piece for external thermal insulation of external wall
By using a cup-shaped diffuser design, combined with flexible steel wire and anchor bolts, the problem of traditional anchors damaging the flexible and gradual structure of the external wall insulation system is solved, achieving a balance between resistance to negative wind pressure and structural integrity.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 刁宏伟
- Filing Date
- 2025-04-07
- Publication Date
- 2026-05-22
AI Technical Summary
Traditional disc-shaped diffuser chemical anchors are too rigid, which can damage the flexible and gradual structure of the external wall insulation system, leading to surface cracking.
The system employs a cup-shaped diffuser, connected by a diffuser ring, washer, and steel wire, and anchored to the base wall. The flexible steel wire provides strong tensile strength, avoiding damage to the flexible gradient structure. The system is then installed by filling with insulation material and applying a grid plaster.
It meets the negative wind pressure resistance requirements of the external wall insulation system while maintaining the integrity of the system's flexible and gradual structure to avoid cracking.
Smart Images

Figure CN224266413U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of external wall insulation in building energy conservation, and specifically relates to a cup-shaped diffuser for external wall insulation and its usage method. Background Technology
[0002] Currently, the anchoring force of external wall insulation nails used in the market is very weak, generally falling far short of the negative wind pressure resistance requirements of external wall insulation systems. Traditional external wall insulation systems mainly rely on on-site bonding, which has a relatively uncertain nature, to meet the negative wind pressure resistance requirements. If chemical anchors are used directly with traditional disc diffuser plates for anchoring, although the negative wind pressure resistance requirements of external wall insulation systems can be met, the traditional disc diffuser plate chemical anchors will have too high rigidity, directly destroying the flexible and gradual structure of the external wall insulation system, leading to severe cracking on the surface of the external wall insulation system. Summary of the Invention
[0003] Purpose of the invention: This utility model provides a cup-shaped diffuser for external wall insulation and its usage method. Its purpose is to solve the problems of traditional disc-shaped diffuser chemical anchors, which have too high rigidity and directly destroy the flexible and gradual structure of the external wall insulation system, resulting in serious cracking on the surface of the external wall insulation system.
[0004] Technical solution: This utility model is achieved through the following technical solution:
[0005] An external wall insulation cup-shaped expander includes an expanding ring, a washer, and steel wires connecting the expanding ring and the washer. A circular hole corresponding to the cup-shaped expander is provided on the insulation layer. The expanding ring is disposed on the outer surface of the insulation layer, and the washer is disposed on the side of the base wall of the insulation layer. The inner edge of the expanding ring and the outer edge of the washer are connected together by several steel wires to form the cup-shaped expander. The cup-shaped expander is inserted into the circular hole corresponding to the cup-shaped expander on the insulation layer. The expanding ring is in contact with the outer surface of the insulation layer, and the washer is connected to the base wall by anchor bolts.
[0006] Anchor bolts pass through the circular holes on the insulation layer corresponding to the cup-shaped diffuser and are anchored to the outer surface of the base wall. The cup-shaped diffuser is inserted into the circular holes on the insulation layer corresponding to the cup-shaped diffuser. Washers pass through the circular holes on the insulation layer corresponding to the cup-shaped diffuser and are fitted onto the bolts of the anchor bolts that are exposed outside the base wall. Nuts and nut washers pass through the circular holes in the middle of the diffuser ring and are screwed onto the bolts of the anchor bolts that are exposed outside the base wall. Nuts press against nut washers, nut washers press against washers, and washers tighten the steel wire to make the diffuser ring press against the insulation layer. Insulation material is filled into the insulation layer through the circular holes in the middle of the diffuser ring into the circular holes corresponding to the diffuser.
[0007] The inner edge of the diffuser ring is flanged to facilitate the positioning and welding of the steel wire to the diffuser ring. The outer edge of the washer is also flanged to facilitate the positioning and welding of the steel wire to the washer.
[0008] The steel wire is stainless steel, and the anchoring bolts are chemical anchors.
[0009] The inner diameter of the diffuser ring is slightly larger than that of the gasket, allowing the gasket to pass through the inner diameter of the diffuser ring. This makes the cup-shaped diffuser part truncated into a frustum shape, allowing the cup-shaped diffusers to be stacked, reducing packaging volume and saving on transportation, packaging, and storage costs.
[0010] During installation, circular holes corresponding to the cup-shaped expander are provided on the insulation layer. The insulation layer is adhered to the outer surface of the base wall. The expander ring is placed on the outer surface of the insulation layer, and the washer is placed on one side of the base wall. The inner edge of the expander ring and the outer edge of the washer are connected together by several steel wires to form a cup-shaped expander. Anchor bolts pass through the circular holes on the insulation layer corresponding to the cup-shaped expander and are anchored to the outer surface of the base wall. The cup-shaped expander is inserted into the circular holes on the insulation layer corresponding to the cup-shaped expander. The expander ring and the outer surface of the insulation layer are then aligned. The surfaces are bonded together. The washer passes through the round hole on the insulation layer corresponding to the cup-shaped expander and is fitted onto the bolt of the anchor bolt exposed outside the base wall. The nut and nut washer pass through the round hole in the middle of the expander ring and are screwed onto the bolt of the anchor bolt exposed outside the base wall. The nut presses the nut washer, the nut washer presses the washer, and the washer pulls the steel wire to make the expander ring press against the insulation layer. Insulation material is filled into the round hole in the insulation layer corresponding to the expander through the round hole in the middle of the expander ring. A thin layer of plaster is applied to the outside of the insulation layer with a mesh, completing the entire external wall insulation system. Attached Figure Description
[0011] Appendix Figure 1 This is an isometric drawing of a traditional disc-shaped diffuser chemical anchor for external wall insulation.
[0012] Appendix Figure 2 This is a cross-sectional view of a traditional disc-shaped diffuser chemical anchor used for external wall insulation.
[0013] Appendix Figure 3 This is an isometric view of the present invention.
[0014] Appendix Figure 4 This is a cross-sectional view of the present invention. Detailed Implementation
[0015] Currently, the chemical anchor bolts for external wall insulation that are publicly available on the market consist of three parts: a chemical anchor bolt, a disc-shaped diffuser, and a diffuser connecting rod set in the middle of the disc-shaped diffuser. The other end of the diffuser connecting rod is provided with an internal thread. The chemical anchor bolt is anchored to the outer surface of the base wall. The diffuser connecting rod is screwed onto the threaded rod of the chemical anchor bolt that is exposed outside the base wall, so that the disc-shaped diffuser is connected to the chemical anchor bolt and the insulation layer is compressed.
[0016] Example: This utility model is an improvement on traditional chemical anchors used for external wall insulation; Appendix Figure 1 Axonometric drawing of a traditional disc-shaped diffuser chemical anchor for external wall insulation, with attached... Figure 2 A cross-sectional view of a traditional external wall insulation chemical anchor with a disc diffuser: 1 is the chemical anchor, 2 is the disc diffuser, 3 is the diffuser connecting rod, 4 is the base wall, and 5 is the insulation layer.
[0017] See attached Figure 3 and attached Figure 4 As shown, this utility model is a cup-shaped expander for external wall insulation, including an expander ring 10, a washer 20, and a steel wire 40 connecting the expander ring 10 and the washer 20 together. A circular hole corresponding to the cup-shaped expander is provided on the insulation layer 50. The expander ring 10 is disposed on the outer surface of the insulation layer 50, and the washer 20 is disposed on one side of the base wall 60 of the insulation layer 50. The inner edge of the expander ring 10 and the outer edge of the washer 20 are connected together by several steel wires 40 to form a cup-shaped expander. The cup-shaped expander is inserted into the circular hole corresponding to the cup-shaped expander on the insulation layer 50. The expander ring 10 is in contact with the outer surface of the insulation layer 50, and the washer 20 is connected to the base wall 60 by anchor bolts 30.
[0018] Anchor bolt 30 passes through the round hole on insulation layer 50 corresponding to the cup-shaped expander and is anchored to the outer surface of base wall 60. Cup-shaped expander is inserted into the round hole on insulation layer 50 corresponding to the cup-shaped expander. Washer 20 passes through the round hole on insulation layer 50 corresponding to the cup-shaped expander and is fitted onto the thread of anchor bolt 30 exposed outside base wall 60. Nut 31 and nut washer 32 pass through the round hole in the middle of expander ring 10 and are screwed onto the thread of anchor bolt 30 exposed outside base wall 60. Nut 31 presses against nut washer 32, nut washer 32 presses against washer 20, and washer 20 pulls steel wire 40 to make expander ring 10 press against insulation layer 50. Insulation material is filled into the round hole in insulation layer 50 corresponding to the expander through the round hole in the middle of expander ring 10.
[0019] The inner edge of the diffuser ring 10 is provided with a flange to facilitate the positioning and welding of the steel wire 40 and the diffuser ring 10. The outer edge of the washer 20 is provided with a flange to facilitate the positioning and welding of the steel wire 40 and the washer 20.
[0020] The 40 steel wire is stainless steel wire, and the 30 anchor bolt is a chemical anchor.
[0021] The inner diameter of the diffuser ring 10 is slightly larger than that of the washer 20. The washer 20 can pass through the inner diameter of the diffuser ring 10, so that the cup body of the cup-shaped diffuser is truncated. The cup-shaped diffusers can be stacked to reduce the packaging volume and save transportation, packaging and storage costs.
[0022] See attached Figure 3 and attachedFigure 4 As shown, during installation, the insulation layer 50 has round holes corresponding to the cup-shaped expander. The insulation layer 50 is adhered to the outer surface of the base wall 60. The expander ring 10 is placed on the outer surface of the insulation layer 50, and the washer 20 is placed on one side of the base wall 60 of the insulation layer 50. The inner edge of the expander ring 10 and the outer edge of the washer 20 are connected together by several steel wires 40 to form a cup-shaped expander. The anchor bolt 30 passes through the round holes on the insulation layer 50 corresponding to the cup-shaped expander and is anchored to the outer surface of the base wall 60. The cup-shaped expander is inserted into the round holes on the insulation layer 50 corresponding to the cup-shaped expander. The expander ring 10 is adhered to the outer surface of the insulation layer 50. The washer 20 passes through the round hole on the insulation layer 50 corresponding to the cup-shaped expander and is fitted onto the threaded rod of the anchor bolt 30 exposed outside the base wall 60. The nut 31 and nut washer 32 pass through the round hole in the middle of the expander ring 10 and are screwed onto the threaded rod of the anchor bolt 30 exposed outside the base wall 60. The nut 31 presses the nut washer 32, and the nut washer 32 presses the washer 20. The washer 20 pulls the steel wire 40 to make the expander ring 10 press the insulation layer 50. Insulation material is filled into the round hole in the insulation layer 50 corresponding to the expander through the round hole in the middle of the expander ring 10. A thin layer of plaster is applied to the outside of the insulation layer 50 with a mesh, completing the entire external wall insulation system.
[0023] The steel wire 40 connecting the diffuser ring 10 and the washer 20 is flexible, providing only super tensile strength, making the entire anchoring system tensile-resistant but not shear-resistant, ensuring the system's super tensile strength without damaging the system's flexible gradient structure.
Claims
1. A cup-shaped diffuser for external wall insulation, comprising a diffuser ring (10) and a washer (20), characterized in that: A circular hole corresponding to the cup-shaped diffuser is provided on the insulation layer (50). A diffuser ring (10) is provided on the outer surface of the insulation layer (50). A gasket (20) is provided on one side of the base wall (60) of the insulation layer (50). The inner edge of the diffuser ring (10) and the outer edge of the gasket (20) are connected together by several steel wires (40) to form a cup-shaped diffuser. The cup-shaped diffuser is inserted into the circular hole corresponding to the cup-shaped diffuser on the insulation layer (50). The diffuser ring (10) is attached to the outer surface of the insulation layer (50). The gasket (20) is connected to the base wall (60) by anchor bolts (30).
2. The cup-shaped diffuser for external wall insulation according to claim 1, characterized in that: Anchor bolts (30) pass through the round holes on the insulation layer (50) corresponding to the cup-shaped expander and are anchored to the outer surface of the base wall (60). The cup-shaped expander is inserted into the round holes on the insulation layer (50) corresponding to the cup-shaped expander. Washers (20) pass through the round holes on the insulation layer (50) corresponding to the cup-shaped expander and are fitted onto the threaded rod of anchor bolts (30) that protrude from the base wall (60). Nuts (31) and nut washers (32) pass through... The central hole of the diffuser ring (10) is screwed onto the bolt of the anchor bolt (30) that is exposed outside the base wall (60). The nut (31) presses the nut washer (32), the nut washer (32) presses the washer (20), and the washer (20) pulls the steel wire (40) to make the diffuser ring (10) press the insulation layer (50). The insulation material is filled from the central hole of the diffuser ring (10) into the corresponding central hole of the insulation layer (50).
3. The cup-shaped diffuser for external wall insulation according to claim 1, characterized in that: The inner edge of the diffuser ring (10) is provided with a flange to facilitate the positioning and welding of the steel wire (40) and the diffuser ring (10).
4. A cup-shaped diffuser for external wall insulation according to claim 1, characterized in that: The outer edge of the washer (20) is provided with a flange to facilitate the positioning and welding of the steel wire (40) and the washer (20).
5. A cup-shaped diffuser for external wall insulation according to claim 1, characterized in that: The steel wire (40) is stainless steel wire.
6. A cup-shaped diffuser for external wall insulation according to claim 1, characterized in that: The anchor bolt (30) is a chemical anchor.