Handrail door
By using an interference fit sleeve to connect with the uprights and crossbeams, the problems of loose welding and noise in the railing gate were solved, achieving a tight assembly and moisture-proof and dust-proof effect, and reducing assembly costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-03
AI Technical Summary
The existing railing gate's welded positions are prone to loosening, leading to loose uprights and noise. Furthermore, the assembly is not tight, resulting in gaps and poor moisture and dust protection.
The sleeve is connected to the upright and the crossbeam with an interference fit. The sleeve has a slot and a limiting flange. The slot is interference fit with the upright, and the outer surface of the sleeve forms a protrusion that fits with the crossbeam to achieve a sealed assembly and avoid loosening and noise.
It achieves a tight fit between the uprights and the crossbeams, preventing loosening and noise, and has moisture-proof and dust-proof effects. The assembly is simple and the cost is low.
Smart Images

Figure CN224079042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of railing gates, and specifically to a railing gate. Background Technology
[0002] Families with children or pets often install gates to prevent them from entering or leaving freely. Gates consist of two horizontal beams and multiple uprights connecting them. Typically, holes are drilled in the beams, the ends of the uprights are inserted into the beams, and then the joints between the uprights and beams are welded in place. Afterward, the assembled gate is painted to cover the welding marks and installation gaps. Over time, the welded areas may loosen and crack, and the installation gaps may cause the uprights to loosen, resulting in noise. Utility Model Content
[0003] To solve the above problems, this utility model provides a railing gate.
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:
[0005] A gate railing includes two horizontal beams spaced apart vertically and a plurality of vertical posts installed between the two horizontal beams. A row of mounting holes is provided on the bottom surface of the upper horizontal beam and the top surface of the lower horizontal beam, and a sleeve is fitted into each mounting hole by an interference fit.
[0006] The sleeve has a slot, the end of the upright is inserted into the slot, the slot wall is interference-fitted with the outer surface of the upright, and the bottom of the slot contacts the end face of the upright to seal the end face of the upright;
[0007] The slot opening extends outward to form a horizontal limiting flange, which abuts against the bottom surface of the upper crossbeam or the top surface of the lower crossbeam.
[0008] The crossbeam and upright are hollow rods. The outer surface of the sleeve extends outward to form a protrusion. The gap between the protrusion and the limiting protrusion is equal to the wall thickness of the crossbeam. The protrusion is located in the mounting hole and cooperates with the limiting protrusion to clamp the side wall of the crossbeam.
[0009] In one embodiment, the sleeve has four vertical sidewalls and a top plate, which together form a slot with a square cross-section. The uprights are square rods that match the square slot, the crossbeams are square rods, and the mounting holes are square holes.
[0010] In one design, the slot is a circular slot, and the upright is a circular rod that matches the circular slot.
[0011] Preferably, the gate also includes a left support post and a right support post. The left and right support posts are hollow square bars. Two square joints are welded to the right side of the left support post and two square joints are welded to the left side of the right support post. The square joints have square receiving holes. The two ends of the crossbeam are respectively inserted into the receiving holes of the square joints on the left support post and the receiving holes of the square joints on the right support post. Screw mounting holes are provided on the square joints and screw holes are provided on the crossbeam. The square joints and the crossbeam are locked together with screws.
[0012] This utility model has the following beneficial effects:
[0013] Both crossbeams are fitted with interference fit sleeves. The sleeves are interference fit with the uprights, which achieves a sealed assembly of the hollow uprights and the two hollow crossbeams. The assembly is tight, does not wobble, has no gaps, is moisture-proof and dust-proof, and the assembly method is simple and does not require tools.
[0014] The sleeve is equipped with a limiting flange and a boss, which work together to clamp the side wall of the crossbeam, helping to prevent the sleeve from falling off the crossbeam. The sleeve can be assembled with the upright first and then with the crossbeam, or vice versa, increasing assembly flexibility. The length of the sleeve does not need to exceed the width of the inner hole of the crossbeam, which helps to reduce the volume of the sleeve, thereby reducing the manufacturing cost of the sleeve and the packaging cost of the railing gate. Attached Figure Description
[0015] Figure 1 This is a three-dimensional assembly drawing of the railing gate in this embodiment;
[0016] Figure 2 yes Figure 1 An exploded view of the railing gate;
[0017] Figure 3 This is an assembly diagram of the sleeve, upright, and crossbeam in this embodiment;
[0018] Figure 4 This is a three-dimensional structural diagram of the sleeve in this embodiment. Detailed Implementation
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.
[0021] like Figures 1 to 4As shown, this embodiment discloses a gate railing, including two horizontal beams 1 spaced apart vertically and multiple vertical posts 5 installed between the two horizontal beams 1. A row of mounting holes is provided on the bottom surface of the upper horizontal beam 1 and the top surface of the lower horizontal beam 1. Each mounting hole has a sleeve 3 fitted into it via an interference fit. Both ends of the vertical posts 5 are respectively interference-fitted with the sleeves 3 installed on the two horizontal beams 1. The interference fit between the sleeves 3 and the vertical posts 5 achieves a sealed assembly between the vertical posts 5 and the two horizontal beams 1. The assembly method is simple, requires no tools, is tight, does not wobble, has no gaps, and is moisture-proof and dust-proof.
[0022] The sleeve 3 has a slot 4, into which the end of the upright 5 is inserted. The wall of the slot 4 is press-fitted with the outer surface of the upright 5, and the bottom of the slot 4 contacts the end face of the upright 5 to seal it. The shape of the slot 4 matches the shape of the upright 5, and the shape of the outer surface of the sleeve 3 matches the shape of the mounting hole. The upright 5 can be a solid or hollow rod; a hollow rod is lighter, and is preferred. The slot 4 has only one opening, and the sleeve 3 fits over the hollow upright 5, preventing moisture from entering the interior of the hollow upright 5, thus providing moisture and dust protection.
[0023] To limit the depth of the sleeve 3 inserted into the mounting hole, the slot 4 extends outward to form a horizontal limiting flange 6. The limiting flange 6 abuts against the bottom surface of the upper beam 1 or the top surface of the lower beam 1. The rest of the sleeve 3 is hidden in the mounting hole. That is to say, except for the limiting flange 6, the part of the sleeve 3 is embedded inside the beam 1. From the outside, only the limiting flange 6 of the sleeve 3 can be seen. The limiting flange 6 is relatively thin and not easy to find, so it does not affect the appearance of the railing gate.
[0024] The crossbeam 1 can be a solid bar or a hollow bar; in this embodiment, the crossbeam 1 is a hollow bar.
[0025] In this embodiment, the sleeve 3 has four vertical sidewalls and a top plate. The four vertical sidewalls and the top plate form a slot 4 with a square cross-section. The upright 5 is a square rod that matches the square slot 4. The crossbeam 1 is a square rod, and the mounting hole is a square hole. In other embodiments, the crossbeam 1 and the upright 5 can also be round rods, elliptical rods, or other shapes. In other embodiments, the shape of the sleeve 3 includes, but is not limited to, various shapes such as circular, elliptical, and polygonal. The shape of the slot 4 includes, but is not limited to, various shapes such as circular, elliptical, and polygonal. In other embodiments, the sleeve 3 can be square, the slot 4 can be circular, the crossbeam 1 can be a square rod with a square mounting hole, and the upright 5 can be a round rod.
[0026] The outer surface of the sleeve 3 extends outward to form a protrusion 7. This protrusion 7 can be a single protrusion 7 encircling the outer surface of the sleeve 3, or multiple protrusions 7 can be positioned at the same height on the outer surface of the sleeve 3. The gap between the protrusion 7 and the limiting flange 6 is equal to the wall thickness of the crossbeam 1. The protrusion 7 is located in the mounting hole and engages with the limiting flange to clamp the side wall of the crossbeam 1. Preferably, the side of the protrusion 7 facing away from the limiting flange 6 has a guide slope 8 to facilitate embedding the protrusion 7 into the mounting hole. The protrusion 7 prevents the sleeve 3 from easily dislodging from the mounting hole.
[0027] The sleeve 3 in this embodiment includes, but is not limited to, materials such as silicone, rubber, or plastic.
[0028] In other embodiments, if the length of the sleeve 3 is long enough, after the sleeve 3 is inserted into the mounting hole, the end of the sleeve 3 will abut against the inner wall of the crossbeam 1. In this case, even without the limiting flange 6, the depth to which each sleeve 3 is inserted into the crossbeam 1 is the same. However, increasing the length of the sleeve 3 will increase the volume of the sleeve 3, thereby increasing the packaging cost and the production cost of the sleeve 3.
[0029] The railing gate in this embodiment also includes a left support column 9 and a right support column 10. The left support column 9 and the right support column 10 are hollow square bars. Two square joints 2 are welded to the right side of the left support column 9 and two square joints 2 are welded to the left side of the right support column 10. The square joints 2 have square receiving holes. The two ends of the crossbeam are respectively inserted into the receiving holes of the square joints 2 on the left support column 9 and the receiving holes of the square joints 2 on the right support column 10. The square joints 2 are provided with screw mounting holes, and the crossbeam is provided with screw holes. The square joints 2 and the crossbeam are locked together with screws.
[0030] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this 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 of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
Claims
1. A balustrade door, characterised in that, The two horizontal beams are oppositely spaced, and a plurality of vertical rods are installed between the two horizontal beams; the bottom surface of the upper horizontal beam and the top surface of the lower horizontal beam are each provided with a row of mounting holes; each mounting hole is embedded with a sleeve through interference fit; The sleeve has a slot into which the end of the vertical rod is inserted; the slot wall is in interference fit with the outer surface of the vertical rod, and the slot bottom is in contact with the end surface of the vertical rod to close the end surface of the vertical rod; The slot opening extends outward to form a horizontal limiting convex edge, which abuts against the bottom surface of the upper horizontal beam or the top surface of the lower horizontal beam; The horizontal beam and the vertical rod are hollow rods, the outer surface of the sleeve extends outward to form a convex block, the gap between the limiting convex edge and the convex block is equal to the wall thickness of the horizontal beam, and the convex block is located in the mounting hole and clamps the side wall of the horizontal beam in cooperation with the limiting convex block.
2. A gate according to claim 1, characterised in that The sleeve has four vertical side walls and a top plate, which enclose a square cross-section slot, the vertical rod is a square rod matched with the square slot, and the horizontal beam is a square rod, and the mounting hole is a square hole.
3. The gate according to claim 1, characterized in that The slot is a circular slot, and the vertical rod is a circular rod matched with the circular slot.