Fire-resistant door and window hardware fixed connection assembly

Abstract

This utility model relates to the field of door and window hardware technology, and discloses a fire-resistant door and window hardware fixing connection assembly, including a hinge sleeve one and a hinge sleeve two. A hinge leaf one is fixedly installed on the right side of the hinge sleeve one, and a hinge leaf two is fixedly installed on the left side of the hinge sleeve two. The hinge sleeve one and hinge sleeve two are provided with a compensation mechanism inside, and the hinge leaf one and hinge leaf two are provided with a locking mechanism inside. When the outside is on fire, the hinge pin is provided with a disc spring group and a pressing cover plate. When the hinge sleeve one expands at high temperature, causing the gap to increase, the stiffness of the disc spring group decreases due to heat, releasing the pre-tightening force to compensate for the gap. After cooling, the disc spring group returns to its original shape, solving the jamming problem caused by the thermal expansion and contraction of traditional metal hinges. When the door frame deforms at high temperature, the sliding friction of the wedge-shaped tooth surface is converted into static friction. Through the slight slippage of the tooth surface, the stress is redistributed, avoiding local stress concentration that could lead to bolt breakage.

Description

Technical Field

[0001] This utility model relates to the field of door and window hardware technology, specifically a fire-resistant door and window hardware fixing connection assembly. Background Technology

[0002] With the continuous improvement of building safety standards, fire-resistant doors and windows, as key components for preventing the spread of fire, have received widespread attention for their fire resistance and structural stability. Hardware fixing components (such as hinges and door closers), as the core load-bearing parts of doors and windows, directly determine the effectiveness of the fire protection system through their high-temperature resistance and reliability.

[0003] Existing doors and windows are connected using traditional hardware (such as aluminum alloy hinges), mostly employing ordinary steel bolts or rigid riveting, relying on initial preload to maintain fixation. In the high-temperature environment of a fire, the metal materials soften thermally, causing a sharp decrease in preload. Simultaneously, the expansion gap caused by the difference in thermal expansion coefficients between the door / window frame and the hardware (such as aluminum alloy hinges) further exacerbates the loosening of the connection. Therefore, an improved fire-resistant door and window hardware fixing connection assembly is needed to solve these problems. Utility Model Content

[0004] The purpose of this utility model is to provide a fire-resistant door and window hardware fixing connection assembly to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fire-resistant door and window hardware fixing connection assembly, including a hinge sleeve one and a hinge sleeve two, a hinge fan one fixedly installed on the right side of the hinge sleeve one, a hinge fan two fixedly installed on the left side of the hinge sleeve two, a compensation mechanism is provided inside the hinge sleeve one and the hinge sleeve two, and a locking mechanism is provided inside the hinge fan one and the hinge fan two;

[0006] The compensation mechanism includes a hinge pin, which is disposed inside the hinge fan one and the hinge sleeve two. The top and bottom of the hinge pin are provided with threaded grooves. A disc spring assembly is fixedly installed inside the hinge pin, and a pressure cover plate is threaded inside the threaded groove.

[0007] Preferably, the hinge pin has cylindrical cavities at both the top and bottom, and the disc spring assembly is fixedly installed inside the cylindrical cavity. The disc spring assembly consists of three disc springs stacked in the same direction.

[0008] Preferably, the threaded grooves are formed inside two cylindrical cavities.

[0009] Preferably, the locking mechanism includes a wedge-shaped washer, the front of which is fixedly mounted with a wedge-shaped tooth surface, the back of which is fixedly mounted with radial fine teeth, and a bolt is provided inside the wedge-shaped washer.

[0010] Preferably, two sets of wedge-shaped washers are provided, and during installation, the two wedge-shaped tooth surfaces mesh and lock together. Both hinge fan one and hinge fan two have mounting holes on their surfaces, and the size of the mounting holes corresponds to the wedge-shaped washers.

[0011] Preferably, the wedge-shaped tooth surface has a high-temperature resistant friction coating between the tooth surfaces.

[0012] Preferably, the bolt thread portion is coated with an intumescent fire-retardant sealant.

[0013] Compared with the prior art, this utility model provides a fire-resistant door and window hardware fixing connection assembly, which has the following beneficial effects:

[0014] 1. In the use of this fire-resistant door and window hardware fixing connection assembly, when an external fire occurs, the disc spring assembly and the pressure cover plate inside the hinge pin are used. When the hinge sleeve expands at high temperature, causing the gap to increase, the thermal stiffness of the disc spring assembly decreases, releasing the pre-tightening force to compensate for the gap. After cooling, the disc spring assembly returns to its original shape, avoiding permanent deformation. The pre-compression elastic force continuously compensates for the amount of deformation at high temperature, solving the problem of jamming caused by thermal expansion and contraction of traditional metal hinges.

[0015] 2. In the use of this fire-resistant door and window hardware fixing connection assembly, the symmetrical wedge-shaped teeth of the two wedge-shaped washers mesh to form a dovetail-like interlocking structure, which converts the shear force generated by the swing of the door leaf into the compressive stress of the wedge-shaped teeth, avoiding the bolt from bearing a shear load in one direction. Moreover, when the door frame deforms at high temperature, the sliding friction of the wedge-shaped teeth is converted into static friction. Through the slight slippage of the teeth, the stress is redistributed, avoiding local stress concentration that could lead to bolt breakage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the compensation mechanism of this utility model;

[0020] Figure 4 This is an exploded view of the locking mechanism of this utility model.

[0021] Figure 5 This is a schematic diagram of the external structure of the locking mechanism of this utility model.

[0022] In the diagram: 1. Hinge sleeve one; 2. Compensation mechanism; 21. Hinge pin; 22. Threaded groove; 23. Disc spring assembly; 24. Pressure cover plate; 3. Locking mechanism; 31. Wedge washer; 32. Wedge tooth surface; 33. Radial fine teeth; 34. Bolt; 4. Hinge leaf one; 5. Hinge sleeve two; 6. Hinge leaf two. Detailed Implementation

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

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Example 1:

[0026] Please see Figure 1-3 This utility model provides a technical solution: a fire-resistant door and window hardware fixing connection assembly, including hinge sleeve one 1 and hinge sleeve two 5, hinge fan one 4 is fixedly installed on the right side of hinge sleeve one 1, hinge fan two 6 is fixedly installed on the left side of hinge sleeve two 5, a compensation mechanism 2 is provided inside hinge sleeve one 1 and hinge sleeve two 5, and a locking mechanism 3 is provided inside hinge fan one 4 and hinge fan two 6.

[0027] The compensation mechanism 2 includes a hinge pin 21, which is located inside the hinge fan 4 and the hinge sleeve 5. The hinge pin 21 has threaded grooves 22 on its top and bottom. A disc spring assembly 23 is fixedly installed inside the hinge pin 21. A pressure cover plate 24 is threaded inside the threaded groove 22. The pre-compression elastic force continuously compensates for high-temperature deformation, solving the jamming problem caused by thermal expansion and contraction of traditional metal hinges.

[0028] Furthermore, cylindrical cavities are provided at the top and bottom of the hinge pin 21. Disc spring assembly 23 is fixedly installed inside the cylindrical cavity. Disc spring assembly 23 is composed of three disc springs stacked in the same direction. When the disc spring assembly 23 is heated, its stiffness decreases, releasing the preload to compensate for the gap. After cooling, disc spring assembly 23 returns to its original shape to avoid permanent deformation.

[0029] Furthermore, the threaded groove 22 is formed inside the two cylindrical cavities.

[0030] Example 2:

[0031] Please see Figure 4 Furthermore, in conjunction with Embodiment 1, the locking mechanism 3 includes a wedge-shaped washer 31, with a wedge-shaped toothed surface 32 fixedly installed on the front side of the wedge-shaped washer 31 and radial fine teeth 33 fixedly installed on the back side of the wedge-shaped washer 31. A bolt 34 is provided inside the wedge-shaped washer 31. The sliding friction of the wedge-shaped toothed surface 32 is converted into static friction. Through a slight slippage of the toothed surface, the stress is redistributed to avoid local stress concentration that could cause the bolt 34 to break.

[0032] It should be noted that the wedge-shaped washers are made of high-temperature resistant alloy steel such as 42CrMo4V, the bolts are A2-70 fireproof bolts, and the inclination angle of the wedge-shaped teeth is 15°-25°.

[0033] Furthermore, two sets of wedge-shaped washers 31 are provided, and during installation, the two wedge-shaped tooth surfaces 32 engage and lock together. The surfaces of hinge fan 1 4 and hinge fan 2 6 are provided with mounting holes, and the size of the mounting holes corresponds to the wedge-shaped washers 31. The symmetrical wedge-shaped tooth surfaces 32 of the two wedge-shaped washers 31 engage to form a dovetail-like interlocking structure, preventing the bolt 34 from bearing shear loads in a single direction.

[0034] Furthermore, a high-temperature friction-resistant coating is provided between the 32 wedge-shaped tooth surfaces.

[0035] Furthermore, the threaded portion of bolt 34 is coated with an intumescent fire-retardant sealant.

[0036] In actual operation, when this device is used, insert the hinge pin 21 into the hinge sleeve 1, insert the hinge sleeve 25 into the top of the hinge pin 21 to complete the pre-assembly of the hinge. Place the hinge at the required installation position on the door frame, place the wedge washer 31 into the corresponding mounting hole of the hinge leaf 4, fit the radial fine teeth 33 against the door frame, fit the wedge tooth surface 32 of another wedge washer 31 against the wedge tooth surface 32 of the first wedge washer 31, use a tool to thread the bolt 34 through the wedge washer 31 and install it inside the door frame. Install the hinge leaf 26 with the door in the same way, thus completing the door hinge installation operation.

[0037] It should be noted that when the external fire occurs, the hinge pin 21 is equipped with a disc spring assembly 23 and a pressure cover plate 24. When the hinge sleeve 1 expands at high temperature, causing the gap to increase, the heat stiffness of the disc spring assembly 23 decreases, releasing the preload to compensate for the gap. After cooling, the disc spring assembly 23 returns to its original shape, avoiding permanent deformation. The preload elastic force continuously compensates for the high temperature deformation, solving the jamming problem caused by the thermal expansion and contraction of traditional metal hinges.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A fire-resistant door and window hardware fixed connection assembly, comprising a hinge sleeve one (1) and a hinge sleeve two (5), characterized in that: The hinge sleeve 1 (1) is fixedly installed with hinge fan 1 (4) on the right side, and the hinge sleeve 2 (5) is fixedly installed with hinge fan 2 (6) on the left side. The hinge sleeve 1 (1) and the hinge sleeve 2 (5) are provided with compensation mechanism (2), and the hinge fan 1 (4) and the hinge fan 2 (6) are provided with locking mechanism (3). The compensation mechanism (2) includes a hinge pin (21), which is located inside the hinge fan (4) and the hinge sleeve (5). The hinge pin (21) has threaded grooves (22) at the top and bottom. A disc spring assembly (23) is fixedly installed inside the hinge pin (21). A pressure cover plate (24) is threaded inside the threaded groove (22).

2. The fire resistant door and window hardware fixed connection assembly according to claim 1, characterized in that: The hinge pin (21) has cylindrical cavities at both the top and bottom. The disc spring assembly (23) is fixedly installed inside the cylindrical cavity. The disc spring assembly (23) consists of three disc springs stacked in the same direction.

3. The fire-resistant door and window hardware fixing connection assembly according to claim 1, characterized in that: The threaded groove (22) is formed inside two cylindrical cavities.

4. The fire-resistant door and window hardware fixing connection assembly according to claim 1, characterized in that: The locking mechanism (3) includes a wedge washer (31), the front of which is fixedly mounted with a wedge tooth surface (32), the back of which is fixedly mounted with radial fine teeth (33), and a bolt (34) is provided inside the wedge washer (31).

5. A fire-resistant door and window hardware fixing connection assembly according to claim 4, characterized in that: Two sets of wedge-shaped washers (31) are provided, and during installation, the two wedge-shaped tooth surfaces (32) engage and lock together. The surfaces of hinge fan one (4) and hinge fan two (6) are provided with mounting holes, and the size of the mounting holes corresponds to that of the wedge-shaped washers (31).

6. The fire-resistant door and window hardware fixing connection assembly according to claim 4, characterized in that: The wedge-shaped tooth surface (32) has a high-temperature friction-resistant coating between its tooth surfaces.

7. A fire-resistant door and window hardware fixing connection assembly according to claim 4, characterized in that: The threaded portion of the bolt (34) is coated with an intumescent fireproof sealant.

Images