Fabricated door frame structure and construction method

Abstract

The invention provides an assembly type door frame structure and a construction method, relates to the technical field of decoration assembly type door frames, and aims to solve the problems that in an existing technical scheme, U-shaped frame body structural design is adopted, door frame installation work is not facilitated due to limitation of the space of a wall body when installation and limiting are conducted on the wall body, the door frame installation difficulty is increased, and the installation cost is lowered. A door frame is movably connected in a wall body, the door frame adopts a split type structural design, the door frame comprises an outer frame and an inner frame, the inner frame is slidably arranged in the outer frame, the outer frame is composed of vertical frames and transverse frames, the vertical frames are distributed in a bilateral symmetry mode, the transverse frames are detachably connected with the vertical frames, and the transverse frames are detachably connected with the outer frame. The vertical frame is connected with the wall body through a limiting device, the transverse frame is connected with the wall body through a positioning structure, the inner frames are distributed left and right, and a cushion block is arranged between every two adjacent inner frames.

Description

Technical Field

[0001] This invention relates to the field of prefabricated door frame technology, and in particular to a prefabricated door frame structure and construction method. Background Technology

[0002] A door frame is a building component installed on door and window openings to support the door leaf, fix the door and window structure, and serve a decorative purpose. A door frame generally consists of two vertical frames (also called mullions) and one top frame (also called the upper sill). Some door frames also have a lower sill (also called the threshold). At the corners of the door frame, special connectors are used for reinforcement to ensure the stability of the door frame structure.

[0003] Existing patent number CN201821093680.6 discloses a door frame, relating to a door. The key technical point is that the door frame is fixedly connected to three protrusions on a doorway. The door frame includes three U-shaped frames, each U-shaped frame comprising two parallel side plates and a connecting plate for connecting the two side plates. The side plates are provided with pull-pull assemblies, which allow the side plates to abut against the side walls of the protrusions respectively. The connecting plate is provided with abutment components to prevent the U-shaped frames from sliding horizontally. This utility model solves the problem of inconvenience in installing the door frame into a doorway, achieving the effect of facilitating door frame installation.

[0004] The above technical solution adopts a U-shaped frame structure design. When installing and limiting the frame to the wall, the space limitation of the wall makes it difficult to carry out the door frame installation work, increasing the difficulty of door frame installation and prolonging the construction period. Therefore, it is particularly important to design a prefabricated door frame structure and construction method to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing technical solutions using U-shaped frame structures, when installed and positioned against a wall, are not conducive to the installation of door frames due to the limited space of the wall, which increases the difficulty of door frame installation and prolongs the construction period. Therefore, this invention proposes a prefabricated door frame structure and construction method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a prefabricated door frame structure, wherein a door frame is movably connected to a wall, the door frame adopts a split structure design, the door frame includes an outer frame and an inner frame, the inner frame is slidably mounted on the outer frame, the outer frame is composed of uprights and crossbars, the uprights are symmetrically distributed left and right, the crossbars are detachably connected to the uprights, the uprights are connected to the wall through a limiting device, the crossbars are connected to the wall through a positioning structure, the inner frames are distributed left and right, and pads are provided between adjacent inner frames.

[0007] Preferably, the limiting device includes a guide rail, the upright is fixedly connected to a slider, the slider has a wedge-shaped structure, the slider has protruding ridges evenly distributed on its inclined surface, the guide rail is provided with a groove that matches the slider, the groove is open on one side, and the guide rail and the slider are symmetrically distributed.

[0008] Preferably, the limiting device further includes a positioning seat, the positioning seat and the guide rail are prefabricated on the wall, the upright is provided with a receiving groove, the receiving groove is provided with a limiting rod, the limiting rod and the positioning seat are connected by threads to fix the upright to the wall, and a protective plate is detachably connected at the position of the receiving groove.

[0009] Preferably, the positioning structure includes an auxiliary seat, a protrusion is fixed to the top of the crossbeam, the auxiliary seat is provided with a groove that matches the protrusion, the groove is open on one side, and the crossbeam is located between adjacent uprights.

[0010] Preferably, support plates are fixedly connected to both sides of the cross frame, and slots that fit the support plates are provided on the upright frame.

[0011] Preferably, the gap between the door frame and the wall is filled with a gradient elastic cushioning material, which is a composite of high-density polyethylene and silicone rubber. A door frame is installed at the abutment position between the door frame and the wall using an adhesive.

[0012] Preferably, two sets of guide rails are detachably connected to the bottom right position of the upright frame, and a rectangular block is fixedly connected to the bottom of the inner frame. The rectangular block is slidably disposed in the guide rail, and there are rolling balls in the circumferential direction of the rectangular block to assist the sliding of the rectangular block. The size of the inner frame, the length of the guide rail, and the size of the pad are adaptively adjusted according to the actual working conditions. When the pad is installed between adjacent inner frames, it always maintains abutment. The bottom of the pad is provided with a slot to avoid the guide rail. The left end of the inner frame abuts against the upright frame, and the top abuts against the bottom of the cross frame.

[0013] Preferably, the tops of adjacent inner frames are connected by a baffle, and the baffle, inner frame and crossbar are detachably connected by angle brackets and bolts. The inner cavity of the inner frame is filled with rock wool, and the material of the door frame is adapted to the application scenario.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1. In this invention, during use, the door frame adopts a split structure design, and the connection and positioning of the upright and the wall are achieved through limiting devices and positioning structures. The upright is matched with the guide rail groove prefabricated on the wall by a wedge-shaped slider, so that it can be quickly positioned without large-area wall excavation during installation. The horizontal frame is detachably spliced ​​with the upright by the guide cooperation of the protrusion and the groove of the auxiliary seat, and the engagement of the support plate with the slot of the upright. The inner frame can be slidably set in the outer frame, and can be adaptively adjusted according to the actual working conditions. The overall structure is assembled in steps, which reduces the construction difficulty. Compared with the conventional U-shaped frame structure, which occupies a lot of space and is not conducive to the work, the above technical solution can effectively avoid these problems.

[0015] 2. In this invention, during use, a gradient elastic buffer material composed of high-density polyethylene and silicone rubber is filled into the gap between the door frame and the wall. This material, through the gradient composite design of the two components, absorbs the vibration and impact generated when the door is opened and closed, thus achieving simple noise reduction. It can adapt to the deformation of the wall and door frame under different ambient temperatures. At the same time, the door frame installed with adhesive not only has a decorative effect on the connection edge between the door frame and the wall.

[0016] 3. In this invention, a detachable guide rail is provided at the bottom of the upright frame. The rectangular block at the bottom of the inner frame slides in the guide rail. Roller balls are evenly distributed around the circumference of the rectangular block, which facilitates the smooth sliding of the rectangular block in the guide rail. The size of the inner frame, the length of the guide rail, and the size of the pad block can be flexibly adjusted according to the width of the door opening. The clearance slot at the bottom of the pad block ensures that it fits tightly against the inner frame after installation. The left end of the inner frame abuts against the upright frame, and the top abuts against the cross frame to form a stable support structure. It can be adapted and adjusted according to the actual working conditions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the assembled door frame structure of the present invention; Figure 2 This is a schematic diagram illustrating the integration of the prefabricated door frame structure of the present invention with the wall. Figure 3 This is an exploded view of a portion of the upright structure in the prefabricated door frame structure of the present invention; Figure 4 This is a schematic diagram of a partial wall structure in the prefabricated door frame structure of the present invention; Figure 5 This is an exploded view of a portion of the upright structure in the prefabricated door frame structure of the present invention; Figure 6 This is a schematic diagram of a partial inner frame structure in the prefabricated door frame structure of the present invention; Figure 7 This is a partial structural diagram of the inner frame and crossbeam in the prefabricated door frame structure of the present invention; Figure 8This is a partial structural diagram of the inner frame and pad block in the prefabricated door frame structure of the present invention; Legend: 1. Wall; 2. Frame; 201. Guide rail; 202. Rectangular block; 203. Ball bearing; 3. Horizontal frame; 4. Limiting device; 401. Guide rail; 402. Slider; 403. Protruding ridge; 404. Slide groove; 405. Positioning seat; 406. Limiting rod; 407. Receiving groove; 408. Protective plate; 5. Positioning structure; 501. Auxiliary seat; 502. Protrusion; 503. Groove; 504. Support plate; 6. Pad; 7. Gradient elastic buffer material; 8. Door frame; 9. Inner frame; 901. Baffle; 902. Corner bracket; 903. Bolt; 904. Rock wool. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1

[0021] like Figure 1-5 As shown, a prefabricated door frame structure is provided, in which a door frame is movably connected to a wall 1. The door frame adopts a split structure design for easy disassembly and assembly. The door frame includes an outer frame and an inner frame 9. The inner frame 9 is slidably mounted on the outer frame and can be adaptively adjusted according to the actual working conditions and width requirements. The outer frame consists of uprights 2 and crossbars 3. The uprights 2 are symmetrically distributed on the left and right. The crossbars 3 are detachably connected to the uprights 2. The crossbars 3 are installed after the installation on both sides of the wall 1. The uprights 2 are connected to the wall 1 by a limiting device 4, and the crossbars 3 are connected to the wall 1 by a positioning structure 5. The inner frames 9 are distributed on the left and right. A pad 6 is provided between adjacent inner frames 9. The design of the pad 6 facilitates the limiting work at the inner side of the outer frame of the inner frame 9. The material of the pad 6 can be selected appropriately according to the actual working conditions to ensure the limiting work of the inner frame 9 on the inner side of the outer frame. The door frame adopts a split structure design and uses limiting device 4 and positioning structure 5 to realize the connection and limiting work between the upright 2 and the wall 1, and the horizontal frame 3 and the wall 1 respectively. The upright 2 fits into the guide rail 401 groove 404 prefabricated on the wall 1 through the wedge slider 402. The protruding rib 403 on the inclined surface of the slider 402 enhances the sliding stability. In addition, the threaded connection between the limiting rod 406 and the positioning seat 405 achieves double fixation. During installation, it can be quickly positioned without large-area chiseling of the wall 1. The limiting device 4 includes a guide rail 401, and a slider 402 is fixedly connected to the upright 2. The slider 402 has a wedge-shaped structure, and protruding ribs 403 are evenly distributed on the inclined surface of the slider 402. The guide rail 401 is provided with a groove 404 that fits into the slider 402. The structural design of the protruding ribs 403 helps to prevent the upright 2 from being pulled out of the guide rail 401, thus playing a structural limiting role. The groove 404 is open on one side, playing a structural limiting role. Both the guide rail 401 and the slider 402 are... The limiting device 4, symmetrically distributed, also includes a positioning seat 405. Both the positioning seat 405 and the guide rail 401 are prefabricated on the wall 1. The upright frame 2 is provided with a receiving groove 407, in which a limiting rod 406 is installed. The limiting rod 406 and the positioning seat 405 are threadedly connected to fix the upright frame 2 to the wall 1, thus limiting the upright frame 2 at its position on the wall 1. A protective plate 408 is detachably connected to the receiving groove 407 to protect the internal space of the receiving groove 407. The positioning structure 5 includes an auxiliary seat 501. A protrusion 502 is fixed to the top of the crossbeam 3. The auxiliary seat 501 is provided with a groove 503 that matches the protrusion 502. The groove 503 is open on one side. Depending on the actual working conditions and the shape of the protrusion 502 and the groove 503, other irregular structures that interlock and limit each other can be selected to ensure that the crossbeam 3 and the auxiliary seat 501 prefabricated on the wall 1 are mutually limited and matched. The crossbeam 3 is located between adjacent uprights 2. Support plates 504 are fixedly connected to both sides of the crossbeam 3. The uprights 2 are provided with slots that match the support plates 504, which facilitates the installation and limiting of the crossbeam 3 above the uprights 2. The crossbeam 3 is detachably connected to the upright 2 via the guide engagement of the protrusion 502 and the groove 503 of the auxiliary seat 501, and the snap-fit ​​engagement of the support plate 504 and the slot of the upright 2. This avoids the problem of insufficient installation space caused by the fixed size of the integral frame. The inner frame 9 is slidably set in the outer frame. The pads 6 between adjacent inner frames 9 and the gradient elastic buffer material 7 filling the gap between the door frame and the wall 1 further eliminate the impact of installation gap errors on the stability of the door frame. The overall structure reduces the construction difficulty and shortens the installation time through a step-by-step assembly method.

[0022] The overall effect of Embodiment 1 is that, in use, by adopting a split structure design for the door frame and using the limiting device 4 and positioning structure 5 to respectively achieve the connection and limiting work between the upright 2 and the wall 1, and between the horizontal frame 3 and the wall 1. The upright 2 fits into the guide rail 401 groove 404 prefabricated on the wall 1 through the wedge slider 402, so that it can be quickly positioned without large-area chiseling of the wall 1 during installation. The horizontal frame 3 achieves detachable splicing with the upright 2 through the guiding cooperation of the protrusion 502 and the groove 503 of the auxiliary seat 501, and the engagement of the support plate 504 with the slot of the upright 2. The inner frame 9 can be slidably set in the outer frame, and can be adaptively adjusted according to the actual working conditions. The overall structure reduces the construction difficulty through step assembly.

[0023] Example 2

[0024] like Figure 6 As shown, the gap between the door frame and the wall 1 is filled with a gradient elastic cushioning material 7. This material 7 is a composite of high-density polyethylene and silicone rubber. Through its gradient composite design, it retains the structural strength and deformation resistance of high-density polyethylene, avoiding the door frame cracking or loosening problems caused by thermal expansion and contraction of traditional rigid filling materials. A door frame 8 is installed at the junction of the door frame and the wall 1 using adhesive. The door frame 8 serves a decorative and aesthetic purpose at the connection edge between the door frame and the wall 1. The effect achieved by the entire embodiment 2 is that, during use, the gap between the door frame and the wall 1 is filled with a gradient elastic buffer material 7 made of high-density polyethylene and silicone rubber. Through the gradient composite design of the two components, this material absorbs the vibration and impact generated when the door is opened and closed, and can adapt to the deformation of the wall 1 and the door frame under different ambient temperatures. At the same time, the door frame 8 installed with adhesive not only has a decorative effect on the connection edge between the door frame and the wall 1.

[0025] Example 3

[0026] like Figure 7-8As shown, two sets of guide rails 201 are detachably connected to the bottom right position of the support frame 2, serving as guides for the sliding of the door frame. A rectangular block 202 is fixedly connected to the bottom of the inner frame 9. The rectangular block 202 is slidably disposed in the guide rails 201. Rolling balls 203 are partially present on the circumference of the rectangular block 202 to assist its sliding. The dimensions of the inner frame 9, the length of the guide rails 201, and the dimensions of the pads 6 are adaptively adjusted according to actual working conditions. When the pads 6 are installed between adjacent inner frames 9, they always remain in contact. The bottom of the pad 6 is provided with a slot for the guide rail 201 to facilitate the inner frame 9 being positioned inside the outer frame. The left end of the inner frame 9 abuts against the upright 2, and the top abuts against the bottom of the cross frame 3. The tops of adjacent inner frames 9 are connected by a baffle 901. The baffle 901, the inner frame 9, and the cross frame 3 are detachably connected by an angle bracket 902 and bolts 903. The structure of the baffle 901 serves to limit the upper part of the inner frame 9. The inner cavity of the inner frame 9 is filled with rock wool 904. The material of the door frame is adjusted according to the application scenario. The overall effect of embodiment 3 is that, in use, by setting a detachable guide rail 201 at the bottom of the upright 2, the rectangular block 202 at the bottom of the inner frame 9 slides in the guide rail 201. Roller balls 203 are evenly distributed around the circumference of the rectangular block 202, which facilitates the smooth sliding of the rectangular block 202 in the guide rail 201. The size of the inner frame 9, the length of the guide rail 201 and the size of the pad 6 can be flexibly adjusted according to the width of the door opening. The clearance slot at the bottom of the pad 6 ensures that it is tightly connected to the inner frame 9 after installation. The left end of the inner frame 9 abuts against the upright 2 and the top abuts against the crossbar 3 to form a stable support structure. The top of the adjacent inner frames 9 is connected by corner brackets 902 and bolts 903 with baffles 901 to enhance the overall stability of the inner frame 9. The rock wool 904 material filling the inner cavity of the inner frame 9 effectively improves the sound insulation and heat preservation performance of the door frame.

[0027] Working Principle: By adopting a split-structure design for the door frame, it is divided into an outer frame and an inner frame. Precise and stable connections between the upright and the wall are achieved through limiting devices and positioning structures, respectively. The upright uses a wedge-shaped slider to engage with a pre-fabricated guide rail groove on the wall. The protruding ridges on the slider's inclined surface enhance sliding stability, preventing the slider from moving out of the groove laterally. It is then fixed by a threaded connection between a limiting rod and a positioning seat. The horizontal frame is detachably connected to the upright through a guide engagement between a top protrusion and a groove in the wall's auxiliary seat, and by the snap-fit ​​between the side support plates and the upright's slots. The inner frame is slidably mounted on the outer frame, allowing for smooth sliding through the cooperation of a guide rail at the bottom of the upright and a rectangular block at the bottom of the inner frame. The size of the inner frame, the length of the guide rail, and the size of the pads can be flexibly adjusted according to the width of the door opening. The pads further ensure the stability of the inner frame after adjustment. The entire installation process is carried out in steps, with each component connected by a prefabricated structure and simple mechanical connections.

[0028] The construction method of the prefabricated door frame is as follows: a. First, slide the support frame into the door opening of the wall with the cooperation of the slider and the guide rail. Then, open the protective plate and screw in the limit rod to complete the limiting work of the support frame at the door opening position. Then, reset the protective plate and install the support frame structure on the right side in sequence. b. The crossbeam structure is manually operated by staff, with protrusions and auxiliary seats as guides. At the same time, the support plates on both sides and the slots on the uprights cooperate to complete the limiting work of the crossbeam above the uprights on both sides. c. Based on the working conditions, select the appropriate inner frame, baffle, guide rail, and pad structure. Install the guide rail at the bottom of the upright, and then install the inner frame in sequence. Next, install the baffle, and finally place the pads. d. Then fill the gap between the door frame and the wall with gradient elastic buffer material, and finally install the door frame with adhesive.

Claims

1. A prefabricated door frame structure, wherein a door frame is movably connected to a wall, the door frame adopting a split-type structural design, characterized in that, The door frame includes an outer frame and an inner frame. The inner frame is slidably mounted on the outer frame. The outer frame is composed of uprights and crossbars. The uprights are symmetrically distributed from left to right. The crossbars are detachably connected to the uprights. The uprights are connected to the wall via a limiting device. The crossbars are connected to the wall via a positioning structure. The inner frames are distributed from left to right. Pads are provided between adjacent inner frames.

2. The prefabricated door frame structure according to claim 1, characterized in that, The limiting device includes a guide rail, and a slider is fixedly connected to the upright. The slider has a wedge-shaped structure, and protruding ridges are evenly distributed on the inclined surface of the slider. The guide rail is provided with a groove that matches the slider. The groove is open on one side. The guide rail and the slider are symmetrically distributed.

3. The prefabricated door frame structure according to claim 2, characterized in that, The limiting device also includes a positioning seat, and the positioning seat and the guide rail are prefabricated on the wall. The upright is provided with a receiving groove, and a limiting rod is provided in the receiving groove. The limiting rod and the positioning seat are connected by threads to fix the upright to the wall. A protective plate is detachably connected at the position of the receiving groove.

4. The prefabricated door frame structure according to claim 1, characterized in that, The positioning structure includes an auxiliary seat, a protrusion is fixed to the top of the crossbeam, the auxiliary seat is provided with a groove that matches the protrusion, the groove is open on one side, and the crossbeam is located between adjacent uprights.

5. The prefabricated door frame structure according to claim 4, characterized in that, Support plates are fixedly connected to both sides of the cross frame, and slots that fit the support plates are provided on the upright frame.

6. The prefabricated door frame structure according to claim 1, characterized in that, The gap between the door frame and the wall is filled with a gradient elastic cushioning material, which is composed of high-density polyethylene and silicone rubber. A door frame is installed at the joint between the door frame and the wall using an adhesive.

7. The prefabricated door frame structure according to claim 1, characterized in that, Two sets of guide rails are detachably connected to the bottom right position of the upright. A rectangular block is fixedly connected to the bottom of the inner frame. The rectangular block is slidably disposed in the guide rail. Roller balls are partially present on the circumference of the rectangular block to assist its sliding. The dimensions of the inner frame, the length of the guide rail, and the dimensions of the pad are adaptively adjusted according to the actual working conditions. The pad always maintains abutment when installed between adjacent inner frames. The bottom of the pad is provided with a slot to avoid the guide rail. The left end of the inner frame abuts against the upright and the top abuts against the bottom of the cross frame.

8. The prefabricated door frame structure according to claim 7, characterized in that, The tops of adjacent inner frames are connected by baffles. The baffles, inner frames, and crossbars are detachably connected by angle brackets and bolts. The inner cavity of the inner frame is filled with rock wool. The material of the door frame is adjusted according to the application scenario.

9. A construction method for a prefabricated door frame structure, used for installing a prefabricated door frame structure as described in any one of claims 1-8, characterized in that, The term includes the following: a. First, slide the support frame into the doorway of the wall with the cooperation of the slider and the guide rail. Then, open the protective plate and screw in the limit rod to complete the limiting work of the support frame at the doorway position. Then, reset the protective plate and install the support frame structure on the right side in sequence. b. The crossbeam structure is manually operated by staff, with protrusions and auxiliary seats as guides. At the same time, the support plates on both sides and the slots on the uprights cooperate to complete the limiting work of the crossbeam above the uprights on both sides. c. Select the appropriate inner frame, baffle, guide rail, and pad structure according to the working conditions. Install the guide rail at the bottom of the upright, and then install the inner frame in sequence. Next, install the baffle, and finally place the pads. d. Then fill the gap between the door frame and the wall with gradient elastic buffer material, and finally install the door frame with adhesive.

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