A wooden door that is used with a floor spring
By introducing iron square tubes and connecting shaft systems into the wooden door, the spring torque is evenly distributed, solving the problem of cracking in the lower crossbeam of the wooden door and extending the service life of the wooden door.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUZHOU NANXUN WANHUI WOOD IND CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-26
AI Technical Summary
When wooden doors are fitted with floor springs, the lower crossbeam is prone to cracking due to the torque of the floor spring, resulting in a shorter service life.
Adding iron square tubes to the wooden door and connecting them to the floor spring via a connecting shaft prevents torque from acting directly on the lower crossbeam. The iron square tubes and connecting shafts evenly distribute the torque of the floor spring, and the bushings and connecting plates protect the upper crossbeam from cracking, thus enhancing the structural strength of the wooden door.
This improves the lifespan of wooden doors, prevents cracking of the lower and upper crossbeams, and extends the service life of the wooden doors.
Smart Images
Figure CN224282283U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of wooden doors, and in particular relates to a wooden door that is used in conjunction with a floor spring. Background Technology
[0002] Floor springs are generally used with metal doors and are less commonly used on wooden doors. This is mainly because wooden doors are not strong enough, and when a floor spring is used with a wooden door, the wooden door cannot withstand the force of the floor spring. However, in some cases, due to the need for compatibility with the decoration style, it is required to use a wooden door. For the sake of convenience, it is best to use a wooden door with a floor spring.
[0003] The existing wooden door structure includes a front panel and a back panel. Two vertical beams are positioned between the front and back panels, glued and secured to them with nails. These two vertical beams are located on opposite sides of the door's width. An upper horizontal beam is positioned between the two vertical beams at the top of the door, and a lower horizontal beam is positioned between the two vertical beams at the bottom of the door panel. The ends of both the upper and lower horizontal beams are glued and secured to their corresponding vertical beams. The upper and lower horizontal beams are also glued and secured to the front panel and the back panel. Multiple reinforcing beams are also positioned between the front and back panels to prevent inward sagging, increase the door's strength, and reduce deformation. These reinforcing beams are glued and secured to the front panel and the back panel. Depending on the arrangement of the reinforcing beams, some are glued and secured to the vertical beams or the upper and lower horizontal beams, while others are glued and secured to each other.
[0004] When wooden doors are used with floor springs, the current practice is to open a groove at the bottom of one end of the lower crossbeam, and install an iron part to connect the floor spring in the groove. However, the thickness of wooden doors and lower crossbeams is limited. After opening a groove at its end, the groove is subjected to the torsion of the floor spring for a long time, which makes the lower crossbeam prone to cracking along the wood grain and expanding outwards, causing a corner of the bottom of the door panel to crack, thus reducing its service life. Utility Model Content
[0005] The purpose of this invention is to provide a wooden door that is used in conjunction with a floor spring. This invention has the advantage of a long service life.
[0006] The technical solution of this utility model is as follows: A wooden door for use with a floor spring includes a front panel and a back panel. Two vertical beams are provided between the front panel and the back panel, and an upper horizontal beam and a lower horizontal beam are provided between the front panel and the back panel. Multiple reinforcing beams are provided between the front panel and the back panel. The feature is that a limiting beam is provided on the inner side of one of the vertical beams. The upper and lower ends of the limiting beam are fixed to the upper and lower horizontal beams, respectively. The front panel and the back panel are both fixed to the limiting beam. A square iron tube is provided between the limiting beam and the vertical beam. The bottom of the square iron tube is provided with a connecting shaft that passes through the lower horizontal beam. The bottom of the connecting shaft is provided with a socket that mates with the floor spring.
[0007] In the aforementioned wooden door that is used with a floor spring, the upper end of the iron square tube is provided with a limiting block, and the vertical beam, limiting beam, panel and back plate are all fixed to the limiting block.
[0008] In the aforementioned wooden door that is used with a floor spring, the upper end of the connecting shaft extends into the iron square tube, and the connecting shaft is provided with at least two square plates that are fixed to the iron square tube.
[0009] In the aforementioned wooden door that is used with a floor spring, the top of the upper beam is provided with a blind hole, which is coaxial with the connecting shaft, and a bushing with a closed bottom is provided inside the blind hole.
[0010] In the aforementioned wooden door used with a floor spring, the top of the blind hole is provided with a groove, one end of which extends to the middle of the upper crossbeam. A connecting plate fixed to the bushing is provided inside the groove, and the connecting plate is screwed to the upper crossbeam.
[0011] Compared with existing technologies, this invention adds a square iron tube to the wooden door. The square iron tube is clamped between the vertical beam and the limiting beam. It is connected to the floor spring via an internal connecting shaft. The torque transmission between the floor spring and the wooden door bypasses the lower crossbeam, preventing cracking and outward expansion at the end of the lower crossbeam, thus preventing the door panel from cracking at the base and improving the lifespan of the wooden door. Therefore, this invention has the advantage of a longer service life.
[0012] Because the iron square tubes are installed vertically, and the door panels are generally over 2 meters long, the length of the iron square tubes can be relatively large, resulting in a larger contact area with the door body and lower contact pressure. This prevents door deformation and extends the door's lifespan. By installing at least two square plates inside the door, the contact points between the connecting shaft and the iron square tubes are increased, preventing the floor spring torque from being evenly distributed across the iron square tubes. This ensures a more even distribution of the floor spring torque across the door body, further preventing door deformation.
[0013] When the door is installed, the upper end is a free-moving end and does not bear the torque of the floor spring. However, due to the imbalance of weight on both sides of the door's rotation axis, a radial force will be generated at the blind hole, which may cause the end of the upper beam to crack. To address this, a bushing is installed in the blind hole, and a connecting plate is installed on the bushing so that the bushing is pulled by the inner part of the upper beam, thus preventing the end of the upper beam from cracking. Attached Figure Description
[0014] Figure 1 This is a frontal sectional view of the present invention.
[0015] Figure 2 This is a left-side view of the present invention.
[0016] Figure 3 This is a structural diagram of a square iron tube.
[0017] Figure 4 This is a front view schematic diagram of the bushing of this utility model.
[0018] Figure 5 This is a top view of the connecting plate.
[0019] The markings in the attached diagram are as follows: 1-panel, 2-back plate, 3-vertical beam, 4-upper crossbeam, 5-lower crossbeam, 6-reinforcing beam, 7-limiting beam, 8-iron square tube, 9-connecting shaft, 10-insertion, 11-limiting block, 12-square plate, 13-shaft sleeve, 14-connecting plate. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.
[0021] Example: A wooden door used with a floor spring, such as Figure 1 As shown, the door includes a front panel 1 and a back panel 2, both made of 9mm thick plywood. Two vertical beams 3 are positioned between the front panel 1 and the back panel 2, located on either side of the door's width. The front panel 1 is glued to the vertical beams and secured with nails, as is the back panel 2. Gluing and nailing refers to applying wood glue to the joint and then using nails to connect them; this is a common woodworking connection method.
[0022] An upper crossbeam 4 and a lower crossbeam 5 are provided between the front panel 1 and the back panel 2. The upper crossbeam 4 is located at the top of the wooden door, and the lower crossbeam 5 is located at the bottom of the wooden board. The two ends of the upper crossbeam 4 are glued and fixed to the ends of the corresponding vertical beams 3 with nails. Both the front panel 1 and the back panel 2 are glued and fixed to the upper crossbeam 4 with nails. The two ends of the lower crossbeam 5 are glued and fixed to the ends of the corresponding vertical beams 3 with nails. Both the front panel 1 and the back panel 2 are glued and fixed to the lower crossbeam 5 with nails.
[0023] Multiple reinforcing beams 6 are provided between the front panel 1 and the back panel 2. Both the front panel 1 and the back panel 2 are glued to the reinforcing beams 6 and fixed with staples.
[0024] The features are as follows:
[0025] One of the vertical beams 3 has a limiting beam 7 on its inner side. The upper and lower ends of the limiting beam 7 are glued and fixed to the upper crossbeam 4 and the lower crossbeam 5 respectively. The panel 1 and the back plate 2 are glued and fixed to the limiting beam 7. There is a tightly fitted iron square tube 8 between the limiting beam 7 and the vertical beam 3. The lower end of the iron square tube 8 is attached to the lower crossbeam 5. The upper end of the iron square tube 8 is provided with a limiting block 11. The vertical beam 3, the limiting beam 7, the panel 1 and the back plate 2 are all glued and fixed to the limiting block 11.
[0026] A connecting shaft 9 is provided inside the square iron tube 8. The lower end of the connecting shaft 9 passes through the lower crossbeam 5 and has a socket 10 that mates with the floor spring. The cross-section of the socket 10 is typically rectangular. Preferably, the lower end of the connecting shaft 9 is heat-treated to a hardness of approximately HRC40 to improve its strength. Two square plates 12, both fixed to the square iron tube 8, are welded onto the connecting shaft 9. One square plate 12 is welded and fixed to the bottom of the square iron tube 8, and the other square plate 12 is tightly fitted to the upper inner side of the square iron tube 8.
[0027] After the wooden door is installed, the weight of the wooden door is transmitted to the iron square tube 8 through the limit block 11, and then to the floor spring through the iron square tube 8 through the square plate 12 and the connecting shaft 9.
[0028] The top of the upper crossbeam 4 has a blind hole, which is coaxial with the connecting shaft 9. A bottom-sealed bushing 13 is installed inside the blind hole. After the bushing 13 is sealed at the bottom, adding grease to it will prevent the grease from seeping into the wooden door and will not cause it to leak. After installation, the wooden door is positioned such that the pivot on the door frame is inserted into the bushing 13, and the pivot is coaxial with the output end of the floor spring. The rotation axis of the wooden door is determined, and the door can rotate. The bushing 13 is made of steel to protect the upper crossbeam 4 from cracking.
[0029] Preferably, the top of the blind hole is provided with a groove, one end of which extends to the middle of the upper crossbeam 4. A connecting plate 14, which is fixed to the bushing 13, is provided in the groove, and the connecting plate 14 is screwed to the upper crossbeam 4. By increasing the connection range between the bushing 13 and the crossbeam 4 through the connecting plate 14, the end of the crossbeam 4 can be better protected from cracking.
[0030] The vertical beam 3, upper horizontal beam 4, lower horizontal beam 5, reinforcing beam 6, and limiting beam 7 between panel 1 and back panel 2 are all 32mm thick, making the overall thickness of the wooden door 50mm. Depending on customer requirements, appropriate painting or wood veneer can be applied to the outer surface of the wooden door.
[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", 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.
Claims
1. A wooden door for use with a floor spring, comprising a front panel (1) and a back panel (2), wherein two vertical beams (3) are provided between the front panel (1) and the back panel (2), an upper horizontal beam (4) and a lower horizontal beam (5) are provided between the front panel (1) and the back panel (2), and multiple reinforcing beams (6) are provided between the front panel (1) and the back panel (2), characterized in that: One of the vertical beams (3) has a limiting beam (7) on its inner side. The upper and lower ends of the limiting beam (7) are fixed to the upper crossbeam (4) and the lower crossbeam (5) respectively. The panel (1) and the back plate (2) are both fixed to the limiting beam (7). There is a tightly fitted iron square tube (8) between the limiting beam (7) and the vertical beam (3). The bottom of the iron square tube (8) has a connecting shaft (9) that passes through the lower crossbeam (5). The bottom of the connecting shaft (9) has a socket (10) that mates with the floor spring.
2. The wooden door used with a floor spring according to claim 1, characterized in that: The upper end of the iron square tube (8) is provided with a limiting block (11), and the vertical beam (3), the limiting beam (7), the panel (1) and the back plate (2) are all fixed to the limiting block (11).
3. The wooden door used with a floor spring according to claim 2, characterized in that: The upper end of the connecting shaft (9) extends into the iron square tube (8), and the connecting shaft (9) is provided with at least two square plates (12) that are fixed to the iron square tube (8).
4. The wooden door used with a floor spring according to claim 1, characterized in that: The top of the upper crossbeam (4) is provided with a blind hole, which is coaxial with the connecting shaft (9), and a bushing (13) with a closed bottom is provided inside the blind hole.
5. The wooden door used with a floor spring according to claim 4, characterized in that: The top of the blind hole is provided with a groove, one end of which extends to the middle of the upper crossbeam (4). A connecting plate (14) fixed to the bushing (13) is provided in the groove, and the connecting plate (14) is screwed to the upper crossbeam (4).