External wall heat preservation and cold bridge prevention anchor bolt assembly

By designing an external wall insulation anti-cold bridge anchor bolt assembly, and utilizing isolation components and column sealing structures to prevent screws from contacting the external wall, the problem of cold bridge formation in existing technologies is solved, achieving better insulation performance.

CN224186939UActive Publication Date: 2026-05-01MEIJIANLI HANDAN HARDWARE MFG PLANT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
MEIJIANLI HANDAN HARDWARE MFG PLANT
Filing Date
2025-05-29
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

When existing thermal insulation anchors expand, one end of the galvanized steel bolt connects to the exterior wall, while the other end connects to the outside of the insulation board, which can easily create a cold bridge and is not conducive to building energy conservation and thermal insulation.

Method used

An anti-cold bridge anchor bolt assembly for external wall insulation was designed, including a sleeve, a disc, screws, and a spacer. Through the structural design of the expansion section, transition section, and straight cylinder section, the spacer and sealing column prevent the screws from contacting the external wall, thus preventing the formation of cold bridges.

Benefits of technology

It effectively avoids the formation of cold bridges, enhances the thermal insulation of the exterior walls, and is beneficial to building energy conservation and thermal insulation.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an outer wall heat preservation and cold bridge prevention anchor bolt assembly, and relates to the technical field of building connecting pieces. The external wall thermal insulation anti-cold bridge anchor bolt assembly comprises a sleeve, a disc, a screw and a separator, the sleeve comprises an expansion part, a transition part and a straight barrel part; the expansion part is connected with the transition part; the transition part is connected with the straight barrel part; the straight cylinder part is provided with a first external thread and a circular ring bulge; the disc is provided with a first internal thread, and the first internal thread is matched with the first external thread; the expansion part is provided with a plurality of clamping legs and a plurality of telescopic grooves; the separator is provided with a connecting part and a parting strip part; the connecting part is fixedly connected with the transition part, and the parting strip part corresponds to the telescopic groove; and the screw is detachably mounted on the sleeve. According to the external wall thermal insulation anti-cold bridge anchor bolt assembly, the technical problems that according to an existing thermal insulation anchor bolt, after a sleeve expands, one end of a galvanized steel bolt is communicated with an external wall, the other end of the galvanized steel bolt is communicated with the exterior of a thermal insulation plate, a cold bridge is easily formed, and energy conservation and thermal insulation of a building are not facilitated are solved.
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Description

Technical Field

[0001] This utility model relates to the technical field of building connectors, and in particular to an external wall insulation and cold-proof bridge anchor bolt assembly. Background Technology

[0002] External wall insulation anchors are fasteners specifically designed for external wall insulation systems. They are used to securely fix insulation materials to the external wall, ensuring the durability of the insulation effect.

[0003] Existing thermal insulation anchors consist of a sleeve, a nylon disc, and a galvanized steel bolt. The sleeve and nylon disc are integrally formed, and the galvanized steel bolt is detachably installed inside the sleeve. In use, a suitable drill bit is selected to drill a hole in the exterior wall. The sleeve is inserted into the hole, with the nylon disc abutting against the insulation board. Then, the galvanized steel bolt is inserted into the sleeve, causing the expansion portion inside the sleeve to expand, thus securing the sleeve to the exterior wall and fixing the insulation board. However, with this type of thermal insulation anchor, after the sleeve expands, one end of the galvanized steel bolt connects to the exterior wall, while the other end connects to the outside of the insulation board, easily forming a thermal bridge, which is detrimental to building energy efficiency and insulation.

[0004] In the process of implementing this embodiment, the inventors discovered at least the following problems:

[0005] Existing thermal insulation anchors, after the sleeve expands, will have one end of the galvanized steel bolt connected to the exterior wall and the other end connected to the outside of the insulation board, which can easily form a cold bridge and is not conducive to building energy conservation and thermal insulation. Utility Model Content

[0006] The purpose of this utility model is to provide an external wall insulation anti-cold bridge anchor bolt assembly, which solves the technical problem that in existing insulation anchor bolts, after the sleeve expands, one end of the galvanized steel bolt will be connected to the external wall and the other end will be connected to the outside of the insulation board, which easily forms a cold bridge and is not conducive to building energy-saving insulation.

[0007] Utility model solution:

[0008] This utility model provides an external wall insulation and cold bridge prevention anchor bolt assembly, including a sleeve, a disc, a screw, and an isolation component; the sleeve includes an expansion portion, a transition portion, and a straight cylindrical portion; the expansion portion is connected to the transition portion, and the transition portion is connected to the straight cylindrical portion; the straight cylindrical portion is provided with a first external thread and a circular protrusion; the disc is provided with a first internal thread, which is adapted to the first external thread; the expansion portion is provided with several locking legs and several expansion grooves; the isolation component is provided with a connecting portion and a spacer portion; the connecting portion is fixedly connected to the transition portion, and the spacer portion corresponds to the expansion groove; the screw is detachably installed on the sleeve.

[0009] Furthermore, the straight cylindrical section is threadedly connected to a sealing post, the sealing post having a sealing groove, the diameter of which is larger than the diameter of the screw.

[0010] Furthermore, the sealing post is connected to a rotating head.

[0011] Furthermore, the screw has a cylindrical portion and a threaded portion, with the threaded portion disposed within the expansion portion.

[0012] Furthermore, the disk is provided with several circular holes.

[0013] Beneficial effects:

[0014] This utility model provides an external wall insulation anti-cold bridge anchor bolt assembly. In use, a hole is drilled in the external wall, and a sleeve is inserted into the hole. The expansion joint passes through the insulation board and enters the hole. A screw is then inserted into the sleeve. As the screw penetrates the expansion joint, it presses against the spacer, which in turn presses against the expansion joint, thus securing the sleeve. At this point, the spacer seals the expansion groove, isolating the screw from the external wall and preventing cold bridges, thereby enhancing the insulation performance of the external wall. Rotating the disc further tightens the insulation board. With this external wall insulation anti-cold bridge anchor bolt assembly, after the expansion joint expands, one end of the galvanized steel bolt will not connect to the external wall, making it less likely to form a cold bridge and contributing to building energy conservation and insulation. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the external wall insulation and cold bridge prevention anchor bolt assembly provided in this embodiment;

[0017] Figure 2 This is a structural schematic diagram of the external wall insulation and cold bridge prevention anchor bolt assembly provided in this embodiment;

[0018] Figure 3 This is a structural schematic diagram of the external wall insulation and cold bridge prevention anchor bolt assembly provided in this embodiment;

[0019] Figure 4 This is a structural schematic diagram of the external wall insulation and cold bridge prevention anchor bolt assembly provided in this embodiment;

[0020] Figure 5 This is a structural schematic diagram of the external wall insulation and cold bridge prevention anchor bolt assembly provided in this embodiment;

[0021] Figure 6 This is a structural schematic diagram of the external wall insulation and cold-proof bridge anchor bolt assembly provided in this embodiment.

[0022] icon:

[0023] 100-Sleeve; 110-Expansion section; 111-Clamping leg; 112-Telescopic groove; 120-Transition section; 130-Straight cylindrical section; 131-First external thread; 132-Annular protrusion;

[0024] 200 - Disk; 210 - Hole; 220 - First internal thread;

[0025] 300 - Screw; 310 - Cylindrical portion; 320 - Threaded portion;

[0026] 400 - Spacer; 410 - Connecting part; 420 - Spacer bar;

[0027] 500 - Sealing column; 510 - Sealing groove; 520 - Rotating head. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that the components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] This embodiment provides an external wall insulation anti-cold bridging anchor bolt assembly. Please refer to... Figure 1-6 As shown, the device includes a sleeve 100, a disc 200, a screw 300, and a spacer 400. The sleeve 100 includes an expansion portion 110, a transition portion 120, and a straight cylindrical portion 130. The expansion portion 110 is connected to the transition portion 120, and the transition portion 120 is connected to the straight cylindrical portion 130. The straight cylindrical portion 130 is provided with a first external thread 131 and an annular protrusion 132. The disc 200 is provided with a first internal thread 220, which is adapted to the first external thread 131. The expansion portion 110 is provided with a plurality of retaining legs 111 and a plurality of telescopic grooves 112. The spacer 400 is provided with a connecting portion 410 and a spacer portion 420. The connecting portion 410 is fixedly connected to the transition portion 120, and the spacer portion 420 corresponds to the telescopic groove 112. The screw 300 is detachably installed on the sleeve 100.

[0035] Specifically, the sleeve 100 cooperates with the disc 200 to fix the insulation board to the wall. The screw 300 is used to expand the expansion part 110, thereby locking the sleeve 100 into the drilled hole. The transition part 120 is conical, which facilitates the insertion of the straight cylindrical part 130 of the sleeve 100 into the insulation board. The diameter of the straight cylindrical part 130 is larger than the diameter of the expansion part 110. The first external thread 131 and the first internal thread 220 allow the disc 200 to move back and forth on the straight cylindrical part 130, so that the disc 200 clamps the insulation board. The annular protrusion 132 is used to prevent the disc 200 from detaching from the straight cylindrical part 130; the clamping leg 111 is provided so that after the expansion part 110 expands, the clamping leg 111 further clamps into the drill hole to prevent the expansion part 110 from detaching; the expansion groove 112 is provided to allow the expansion part 110 to have room for expansion and contraction; the isolation member 400 is used to prevent the screw 300 from contacting the outer wall; the connecting part 410 connects the spacer part 420 together, and the spacer part 420 corresponds to the expansion groove 112 to prevent the screw 300 from contacting the outer wall. In use, a hole is drilled in the outer wall using a drill bit, and the sleeve 100 is inserted into the hole. The expansion part 110 passes through the insulation board and enters the hole. The screw 300 is inserted into the sleeve 100. When the screw 300 penetrates deep into the expansion part 110, the screw 300 presses against the spacer part 420, and the spacer presses against the expansion part 110, thereby clamping the sleeve 100. At this time, the spacer part 420 seals the expansion groove 112, isolating the screw 300 from the outer wall, avoiding the generation of cold bridges, and enhancing the insulation performance of the outer wall. The disc 200 is rotated to make the disc 200 squeeze the insulation board even tighter.

[0036] In this embodiment, the straight cylindrical part 130 is threadedly connected to a sealing post 500, and the sealing post 500 is provided with a sealing groove 510, the diameter of which is larger than the diameter of the screw 300.

[0037] Specifically, the sealing post 500 is used to seal the screw 300 inside the sleeve 100 to prevent the other end of the screw 300 from forming a cold bridge, thereby enhancing the insulation performance of the insulation system; the sealing groove 510 is used to hold the screw 300.

[0038] In this embodiment, the sealing post 500 is connected to the rotating head 520.

[0039] Specifically, the rotating head 520 is designed to facilitate the rotation of the sealing post 500, thereby making it easier to seal the screw 300 into the sleeve 100.

[0040] In this embodiment, the screw 300 has a cylindrical portion 310 and a threaded portion 320, with the threaded portion 320 disposed within the expansion portion 110.

[0041] Specifically, the cylindrical part 310 is connected to the threaded part 320. After the screw 300 is installed, the cylindrical part 310 is located inside the straight part 130, and the threaded part 320 is located in the expansion part 110. The threaded part 320 is designed to facilitate the screw 300 to rotate into the expansion part 110.

[0042] In this embodiment, the disk 200 is provided with a plurality of circular holes 210.

[0043] Specifically, the circular hole 210 is designed to facilitate the rotation of the disc 200 by the operator.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An external wall insulation cold bridge preventing anchor assembly, characterized by, Includes a sleeve (100), a disc (200), a screw (300), and a spacer (400); The sleeve (100) includes an expansion section (110), a transition section (120), and a straight section (130); The expansion portion (110) is connected to the transition portion (120), and the transition portion (120) is connected to the straight cylindrical portion (130); The straight cylindrical portion (130) is provided with a first external thread (131) and an annular protrusion (132); The disk (200) is provided with a first internal thread (220), which is adapted to the first external thread (131); The expansion section (110) is provided with a plurality of locking legs (111) and a plurality of telescopic grooves (112); The spacer (400) is provided with a connecting part (410) and a spacer part (420); The connecting part (410) is fixedly connected to the transition part (120), and the partition strip part (420) corresponds to the telescopic groove (112); The screw (300) is detachably mounted on the sleeve (100).

2. The anchoring assembly of claim 1, wherein, The straight cylindrical part (130) is threadedly connected to a sealing post (500), the sealing post (500) is provided with a sealing groove (510), the diameter of the sealing groove (510) is larger than the diameter of the screw (300).

3. The external wall insulation anti-cold bridging anchor bolt assembly according to claim 2, characterized in that, The sealing post (500) is connected to a rotating head (520).

4. The external wall insulation anti-cold bridging anchor bolt assembly according to claim 3, characterized in that, The screw (300) has a cylindrical portion (310) and a threaded portion (320), the threaded portion (320) being disposed within the expansion portion (110).

5. The anchoring assembly of claim 4, wherein the anchoring assembly is a cold-bridge prevention anchoring assembly for an external wall thermal insulation. The disk (200) has several circular holes (210).