Expansion fastening mechanism for fan rail connection

Abstract

The expansion fastening mechanism comprises an expansion strip, an expansion supporting block, a threaded rod and a limiting guide block, the expansion strip is used for connecting a sash frame and a lower rail, the two side faces of the expansion strip extend towards the sash frame and the lower rail to be provided with inserting parts respectively, the expansion supporting block is arranged in a through hole of the expansion strip, and the limiting guide block is arranged in the through hole of the expansion strip. One end of the expansion supporting block is provided with a chamfer, and the screw penetrates through the through hole and penetrates through the expansion supporting block along one end of the chamfer; the expansion strip and the expansion supporting block which are split are adopted, the expansion supporting block pushes the expansion strip to move towards the left side and the right side through the screw rod, and therefore the insertion part is directly connected with the sash frame and the lower rail, the installation process is simplified, and labor intensity and installation cost are reduced. Firm connection between the expansion strip and the expansion supporting block and firm connection between the expansion strip and the sash frame and the lower rail are guaranteed through the screw and the limiting guide block, and the stability and durability of the whole door and window structure are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of door and window accessories, more specifically, especially relates to the expansion fastening mechanism for the connection of the fan rail. BACKGROUND

[0002] Door and window are important components in the field of construction, they not only play the role of partition and protection, but also relate to the performance of the building's appearance, heat insulation, sound insulation and water tightness. In the traditional door and window structure, the connection mode of the fan frame and the lower rail usually involves multiple components and steps, such as using screws, hinges or other connecting parts to fix the fan frame to the lower rail. This connection mode has the following problems:

[0003] 1. Complicated connection process: the connection of the fan frame and the lower rail needs to be completed through multiple steps and tools, which not only increases the installation time, but also increases the labor intensity and installation cost;

[0004] 2. Poor water tightness: due to the existence of gaps in the traditional connection mode, these gaps may cause water penetration during rain or cleaning, affecting the water tightness of the door and window, and further causing damage to the indoor decoration or corrosion of metal parts;

[0005] 3. Difficult maintenance: when the fan frame and the lower rail need to be repaired or replaced, the traditional connection mode may need to disassemble multiple components, which makes the maintenance work complex and time-consuming;

[0006] 4. Structural stability: the traditional connection mode may cause the connection to loosen due to long-term use and environmental factors (such as temperature changes), affecting the stability and service life of the entire door and window structure.

[0007] Therefore, in order to solve the above problems, a new door and window fan frame and lower rail connection technology is needed in the field, which should simplify the connection process, improve the water tightness, facilitate maintenance, and ensure the long-term stability of the structure. CONTENT OF THE UTILITY MODEL

[0008] The utility model improves the prior art in view of the above-mentioned shortcomings, provides an expansion fastening mechanism for the connection of the fan rail, and the technical scheme is as follows:

[0009] The expansion fastening mechanism for the connection of the fan rail comprises:

[0010] The expansion strip is used for the connection between the fan frame and the lower rail, the two sides of the window frame extend towards the lower rail respectively, so that the bottom two sides of the window frame cooperate with the upper two sides of the lower rail, the expansion strip adopts a split structure, and the two side surfaces of the expansion strip extend respectively and are provided with a plug-in part towards the fan frame and the lower rail, and the fan frame and the lower rail are limited and fixed through the plug-in part, and a through hole is formed in the middle part of the expansion strip along the length direction;

[0011] The expansion support block is arranged in the through hole and has a split structure with an insertion hole in the middle part, and a chamfer is arranged at one end of the insertion hole of the expansion support block;

[0012] The screw rod is arranged in the through hole and penetrates the insertion hole along one end of the chamfer;

[0013] The limiting guide block is arranged at the opposite end of the screw rod, and the limiting guide block extends towards the two sides of the expansion strip and is provided with a limiting arm.

[0014] The expansion strip includes a first expansion strip and a second expansion strip, both of which have an L-shaped structure and are staggered with each other to limit the first expansion strip and the second expansion strip.

[0015] The expansion support block is provided with a positioning protrusion extending towards the two sides of the expansion strip, and the two sides of the expansion strip are provided with guide grooves, so that the two positioning protrusions are axially arranged in the guide grooves.

[0016] Further, the expansion support block is provided with two groups, which are arranged at the two ends of the expansion strip.

[0017] The two sides of the expansion strip are provided with clamping grooves corresponding to the limiting arms, and the limiting arms extend and are inserted into the clamping grooves.

[0018] Further, the two limiting arms are provided with avoidance positions corresponding to the expansion strip.

[0019] The limiting guide block is arranged at the opposite end of the limiting arm, and the limiting guide block extends towards the two sides of the expansion strip and is provided with a limiting arm.

[0020] Compared with the prior art, the utility model discloses the beneficial effect is: the utility model discloses the design of split type expansion strip and expansion support block, and through the screw rod insertion expansion support block, makes expansion support block push expansion strip respectively to left and right two sides remove, to make the direct realization with the connection of fan frame and lower rail of plug -in portion, reduced installation step and required tool quantity significantly, simplified installation process, saved time to reduce labour intensity and installation cost, expansion strip can effectively fill and fasten the gap between fan frame and lower rail, make the utility model can improve the sealing performance of connecting portion obviously, prevent rainwater or moisture when washing from penetrating effectively, protect fan frame and lower rail between from water damage and avoid metal part rust, the utility model discloses when needing to maintain or replace fan frame and lower rail, through simple operation can dismantle or reassemble relevant parts, make maintenance work become more convenient and save time, the utility model discloses the screw rod and location guide block ensure the firm connection between expansion strip and expansion support block and with fan frame and lower rail, and this connection improves the stability and durability of whole door and window structure, reduces the connection loose problem of long -term use or environmental factor. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduce:

[0022] Figure 1 It is the perspective view of the embodiment of the utility model;

[0023] Figure 2 It is the side view structure diagram of the embodiment of the utility model;

[0024] Figure 3 It is the perspective view of the utility model;

[0025] Figure 4 It is the side view of the utility model;

[0026] Figure 5 It is the exploded view of the utility model;

[0027] Figure 6 It is the expansion support block structure diagram of the utility model;

[0028] Including: 1, expansion strip;2, expansion support block;3, screw rod;4, location guide block;5, limit arm;6, first expansion strip;7, second expansion strip;8, positioning convex part;9, guide groove;10, assembly site;11, clamping groove;12, empty space;111, plug -in portion;112, through -hole;211, insertion hole;212, chamfer. DETAILED DESCRIPTION

[0029] 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.

[0030] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings, as follows:

[0031] This utility model provides an expansion fastening mechanism for sector rail connections, such as... Figures 1 to 5 As shown, it includes:

[0032] Expansion strip 1 is used to connect the sash frame and the lower rail. The two sides of the window frame extend toward the lower rail respectively, so that the bottom two sides of the window frame match the upper two sides of the lower rail. The expansion strip 1 adopts a split structure, and the two sides of the expansion strip 1 are provided with insertion parts 111 extending toward the sash frame and the lower rail respectively. The sash frame and the lower rail are limited and fixed by the insertion parts 111. The middle part of the expansion strip 1 has a through hole 112 along the length direction.

[0033] Expansion block 2 is disposed within through hole 112. Expansion block 2 adopts a split structure, with an insertion hole 211 in its middle. The design incorporates a split expansion strip 1 and expansion block 2. A screw 3 is inserted into expansion block 2, causing expansion block 2 to push expansion strip 1 to move to the left and right sides respectively. This allows the insertion part 111 to directly connect with the fan frame and the lower rail. The split expansion block 2 can effectively expand within through hole 112, working in conjunction with expansion strip 1 to provide a strong fastening effect between the fan frame and the lower rail. The design not only enhances the stability of the connection, but also effectively improves the sealing performance of the entire structure, thereby improving the water tightness and air tightness of the doors and windows. The expansion support block 2 has a chamfer 212 at one end of the insertion hole 211. The insertion hole 211 in the middle of the expansion support block 2 allows the screw 3 to pass through smoothly, while the chamfer 212 at one end helps to guide the screw 3 to be inserted and positioned smoothly. This design improves the compatibility between different sizes or models of sash frames and the lower rail, ensuring that the fastening mechanism can adapt to a variety of different installation needs.

[0034] The screw 3 passes through the through hole 112 and through the insertion hole 211 along one end of the chamfer 212. The chamfer 212 design also helps to distribute the pressure more evenly during the tightening process of the screw 3, thereby optimizing the load-bearing capacity of the entire connection structure. This means that the connection between the door and window frame and the lower rail will be more stable and can withstand greater forces, such as wind pressure and vibration, without easily loosening or being damaged.

[0035] The limiting guide block 4 is arranged at one end opposite to the screw rod 3, and the limiting guide block 4 extends towards the two sides of the expansion strip 1 and is provided with limiting arms 5, the limiting guide block 4 is located at one end of the screw rod 3, and the expansion strip 1 is matched with the limiting arms 5, which can effectively prevent the expansion strip 1 from being excessively displaced during the tightening process of the screw rod 3, the design of the limiting arms 5 further increases the stability of the connection between the sash and the lower rail, ensures the long-term stability and durability of the entire door and window structure, the limiting arms 5 can provide clear positioning for installation, the butt joint of the sash and the lower rail is more accurate, the installation process is simplified, and the risk of repeated adjustment and installation errors caused by inaccurate alignment is reduced. Because the limiting guide block 4 and the limiting arm 5 provide clear guidance and positioning, the installer can quickly and correctly complete the assembly, greatly reducing the time required for installation and improving work efficiency.

[0036] The expansion strip 1 comprises a first expansion strip 6 and a second expansion strip 7, both of which are L-shaped structures and are interlaced with each other, so that the first expansion strip 6 and the second expansion strip 7 are limited in position.

[0037] As shown in Figure 6 The expansion support block 2 is provided with a positioning protrusion 8 extending towards the two sides of the expansion strip 1, and the two sides of the expansion strip 1 are provided with guide grooves 9, so that the two positioning protrusions 8 are axially movably arranged in the guide grooves 9. The expansion support block 2 is provided with two groups, which are arranged at the two ends of the expansion strip 1. The positioning protrusion 8 on the expansion support block 2 cooperates with the guide grooves 9 on the two sides of the expansion strip 1 to allow a certain axial movement. When the screw rod 3 passes through the expansion support block 2, the expansion support block 2 moves axially along the guide groove 9 through the positioning protrusion 8, so that the expansion support block 2 can expand the expansion strip 1. By arranging two groups of expansion support blocks 2 at the two ends of the through hole 112, the tightening force can be more evenly distributed, so that uniform pressure distribution is formed on the entire contact surface of the inner wall of the through hole 112, which helps to improve the stability and load-bearing capacity of the overall connection and reduce the risk of damage caused by local stress concentration.

[0038] Corresponding to the limiting arms 5, the two sides of the expansion strip 1 are provided with clamping grooves 11, and the limiting arms 5 extend and are inserted into the clamping grooves 11. The two limiting arms 5 are provided with empty positions 12 corresponding to the expansion strip 1. When the limiting arms 5 extend and are inserted into the clamping grooves 11, the relative position between the expansion strip 1 and the limiting guide block 4 can be ensured to be correct, thereby improving the installation precision of the entire door and window sash and lower rail connection structure. The cooperation of the limiting arms 5 and the clamping grooves 11 provides an additional support point, which enhances the stability of the entire connection structure.

[0039] The limiting guide block 4 is located at one end opposite to the limiting arm 5, and the two sides of the limiting guide block 4 are provided with assembly positions 10. The design of the assembly positions 10 provides clear butt joint and fixing points for the installation of the limiting guide block 4, making the installation process more rapid and convenient.

[0040] The utility model discloses a split type expansion strip 1 and expansion support block 2 design, through the screw rod 3 inserts expansion support block 2, makes expansion support block 2 push expansion strip 1 respectively to the left and right sides movement to the plug -in part 111 directly realizes the connection with the fan frame and lower rail, has reduced the installation step and the required tool quantity significantly, has simplified the installation process, has saved time, and reduced the labor intensity and installation cost, expansion strip 1 can effectively fill and fasten the gap between fan frame and lower rail, make the utility model can improve the sealing performance of connecting part obviously, effectively prevent rainwater or moisture penetration when washing, protect the fan frame and lower rail between and avoid the metal part rusting, the utility model discloses when needing to maintain or replace fan frame and lower rail, through simple operation can dismantle or reassemble relevant parts, make maintenance work become more convenient and save time, the utility model discloses the screw rod 3 and limiting guide block 4 have ensured the firm connection between expansion strip 1 and expansion support block 2 and with fan frame and lower rail, this connection mode improves the stability and durability of whole door and window structure, reduces the connection loose problem caused by long -term use or environmental factor.

[0041] Although the embodiments of the utility model have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An expansion fastening mechanism for a fan rail connection, characterized in that The utility model relates to a kind of expansion strip for connecting between fan frame and lower rail, the expansion strip adopts split structure, and the expansion strip two sides are respectively extended with the insertion part towards fan frame and lower rail, and fan frame and lower rail are fixed by the insertion part, and the middle part of the expansion strip is provided with through hole along length direction;Expansion support block is set in the through hole, the expansion support block adopts split structure, and the middle part is provided with insertion hole, and the expansion support block is provided with chamfer at one end of insertion hole;Screw rod is threaded in through hole, and along the end of chamfer insertion hole is penetrated;Limiting guide block is set in the opposite end of screw rod, and limiting guide block is respectively extended with limiting arm towards the two sides of expansion strip. The expansion strip includes first expansion strip and second expansion strip, the first expansion strip and the second expansion strip are both L-shaped structure, and its mutual staggered cooperation makes the first expansion strip and the second expansion strip limit up and down. The expansion support block is respectively extended with positioning convex part towards the two sides of expansion strip, and the two sides of expansion strip are both provided with guide slot, so that the two positioning convex parts are respectively axially movably threaded in guide slot. The expansion support block is provided with two groups, which are respectively set in the two ends of expansion strip. The two sides of expansion strip are respectively provided with clamping slot corresponding to limiting arm, and limiting arm is extended and inserted in clamping slot.

2. The expansion fastening mechanism for fan rail connection according to claim 1, characterized in that, The two limiting arms are respectively provided with empty space corresponding to expansion strip.

3. The expansion fastening mechanism for fan rail connection of claim 1, wherein, The limiting guide block is respectively extended with assembly position on the two sides of opposite end of limiting arm.

4. The expansion fastening mechanism for fan rail connection according to claim 1 or 3, characterized in that, ​ 5. The expansion fastening mechanism for fan rail connection of claim 1, wherein, ​ 6. The expansion fastening mechanism for fan rail connection according to claim 1 or 5, characterized in that, ​ 7. The expansion fastening mechanism for fan rail connection of claim 1, wherein, ​

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