Concealed door closer inner frame

Abstract

The present invention provides an inner frame of a door closer for a concealed entrance door, comprising an inner frame steel frame, wherein a reinforcement mechanism is provided at one inner end of the inner frame steel frame, and a plurality of tensioning mechanisms are provided at the lower portion of the inner frame steel frame. The invention strengthens the embedding friction between the inner frame steel frame and the door body by means of anti-slip teeth on both sides of the inner frame steel frame, so that the embedding is more stable. A reinforcement plate is installed by means of the reinforcement mechanism, thereby eliminating welding operations and avoiding problems caused by welding. The structure is simple, and the size of the reinforcement plate is adjustable. The width of the inner frame steel frame is adjusted by means of a plurality of tensioning mechanisms, so as to adapt to errors in the slot width caused by inaccuracies in slotting.

Description

Technical Field

[0001] The invention relates to the technical field of entrance doors, and in particular to an inner frame of a door closer of a concealed entrance door. Background Art

[0002] The entrance door is the first gate to enter the house, so of course its anti-theft performance should be higher. Therefore, the entrance door is also called the anti-theft door. Most houses are installed with the entrance door when they are completed.

[0003] The door closer is a spring-like hydraulic device on the door head. When the door is opened, it can be compressed and then released to automatically close the door. It acts like a spring door and can ensure that the door is closed to its initial position accurately and promptly after being opened.

[0004] The hidden door closer needs to be embedded in the top surface of the door leaf during installation. Since the interior of the entrance door is mostly hollow, the hidden inner frame needs to be installed first. The existing hidden inner frame is welded and assembled in a dispersed manner, which is difficult to operate, has a complex structure, and the reinforced welding dimensions are not accurate. The appearance defects are obvious, and it is difficult to repair the defects manually, which consumes labor and increases costs. Summary of the invention

[0005] In view of the above problems, the present invention provides an inner frame of a door closer for a concealed entrance door, aiming to solve the technical problems of complex structure, inaccurate size and difficulty in manually repairing defects proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the inner frame of the door closer of the hidden entrance door includes an inner frame steel frame, one end of the inner frame of the inner frame is provided with a reinforcement mechanism, and the lower part of the inner frame of the inner frame is provided with multiple tensioning mechanisms.

[0007] Furthermore, a reinforcement installation port is provided at one end of the top surface of the inner skeleton steel frame, a plurality of tensioning adjustment operation holes are provided in the middle of the top surface of the inner skeleton steel frame, anti-slip teeth are provided on both sides of the outside of the inner skeleton steel frame, and a plurality of reinforcing ribs are provided at one end of the inner top surface of the inner skeleton steel frame.

[0008] Furthermore, the positions of the plurality of tensioning adjustment operation holes are respectively opened directly above the plurality of tensioning mechanisms.

[0009] Furthermore, the reinforcement mechanism includes a reinforcement plate, which is slidably connected to the middle part of the reinforcement slide, and a folding spring is provided at one end of the reinforcement plate, and one end of the folding spring is provided at an inner end of the reinforcement slide, and a plurality of reinforcement joint screws are provided at the other end of the reinforcement plate, and the middle parts of the plurality of reinforcement joint screws are rotatably connected to one end of the reinforcement plate, and one ends of the plurality of reinforcement joint screws are threadedly connected to the lower part of the reinforcement slide.

[0010] Furthermore, a door closer installation opening is provided in the middle of the reinforcement plate, and a plurality of door closer screw holes are respectively provided at both ends of the door closer installation opening and in the middle of the reinforcement plate. A reinforcement joint block is provided at one end of the bottom surface of the reinforcement plate, and the middle part of the reinforcement joint block is rotatably connected to the middle parts of the plurality of reinforcement joint screws.

[0011] Furthermore, a reinforcement joint fixing block is provided at the lower part of the reinforcement slideway, the middle part of the reinforcement joint fixing block is threadedly connected to one end of a plurality of the reinforcement joint screws, and reinforcement triangles are symmetrically provided on both sides of both ends of the reinforcement joint fixing block.

[0012] Furthermore, the tensioning mechanism includes a tensioning fixing block, the two ends of which are respectively fixedly connected to the two sides of the interior of the inner bone steel frame, the middle part of the tensioning fixing block is rotatably connected to the upper part of the tensioning adjustment wheel, and a tensioning adjustment ring is provided around the lower part of the tensioning adjustment wheel, and the two sides of the tensioning adjustment ring are respectively fixedly connected to the two sides of the interior of the inner bone steel frame.

[0013] Furthermore, a plurality of elastic expansion slots are respectively formed at both ends of the tensioning and fixing block.

[0014] Furthermore, an adjusting head is provided at the upper end of the tensioning adjustment wheel, a cross adjusting groove is opened on the top surface of the adjusting head, the bottom surface of the adjusting head is fixedly connected to the upper end of the adjusting shaft, the adjusting shaft is rotatably connected to the middle part of the tensioning fixed block, the lower end of the adjusting shaft is coaxially connected to the middle part of the adjusting wheel body, the adjusting wheel body is elliptical in shape, and adjusting wheels are respectively provided on both sides of the adjusting wheel body, and a plurality of adjusting wheels are respectively engaged and connected to the inner sides of the tensioning adjustment ring.

[0015] Furthermore, adjustment ring fixing blocks are respectively provided on both sides of the tensioning adjustment ring, and the plurality of adjustment ring fixing blocks are respectively fixedly connected to one side of the inner part of the inner skeleton steel frame. An adjusting wheel limiting groove is opened in the middle of the tensioning adjustment ring, and wheel clamping blocks are respectively provided on both sides of the inner part of the adjusting wheel limiting groove. The material of the tensioning adjustment ring is a flexible material, including but not limited to: polyethylene, nylon.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The anti-slip teeth on both sides of the inner frame steel frame strengthen the embedding friction between the inner frame steel frame and the door body, making the embedding more stable. The reinforcement plate is installed by plugging into the reinforcement mechanism, which saves the welding operation and avoids the problems caused by welding. The structure is simple and the size of the reinforcement plate is adjustable. The width of the inner frame steel frame is adjusted by multiple tensioning mechanisms to adapt to the error of the slot width caused by inaccuracy in slotting. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the appearance structure of the present invention A;

[0019] Figure 2 This is a schematic diagram B of the appearance structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the internal steel frame structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the front and side of the inner skeleton steel frame structure of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the reinforcement mechanism of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure disassembly of the reinforcement mechanism of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the tensioning mechanism of the present invention;

[0025] Figure 8 It is a schematic diagram of the internal structure of the tensioning mechanism of the present invention;

[0026] Fig. 9 It is a schematic cross-sectional top view of the tensioning mechanism structure of the present invention.

[0027] In the figure: 1. inner frame; 11. reinforcement installation opening; 12. tensioning adjustment operation hole; 13. anti-skid teeth; 14. reinforcing ribs; 2. reinforcement mechanism; 21. reinforcement plate; 211. door closer installation opening; 212. door closer screw hole; 213. reinforcement joint block; 22. reinforcement slideway; 221. reinforcement joint fixing block; 222. reinforcement triangle; 23. folding spring; 24. reinforcement joint screw; 3. tensioning mechanism; 31. tensioning fixing block; 311. elastic telescopic groove; 32. tensioning adjustment wheel; 321. adjustment head; 322. cross adjustment groove; 323. adjustment shaft; 324. adjustment wheel body; 325. adjustment wheel; 33. tensioning adjustment ring; 331. adjustment ring fixing block; 332. adjustment wheel limit groove; 333. wheel clamping block. DETAILED DESCRIPTION

[0028] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly connected by technicians in the technical field to which the present invention belongs. The terminology used in the specification of the present invention is for the purpose of describing specific embodiments and is not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] For example, please refer to Figure 1-2 The inner frame of the door closer of the hidden entrance door includes an inner frame steel frame 1, one end of the inner frame steel frame 1 is provided with a reinforcement mechanism 2, and the lower part of the inner frame steel frame 1 is provided with multiple tensioning mechanisms 3.

[0032] For example, please refer to Figure 3-4 A reinforcement installation opening 11 is provided at one end of the top surface of the inner frame steel frame 1, a plurality of tensioning adjustment operation holes 12 are provided in the middle of the top surface of the inner frame steel frame 1, anti-slip teeth 13 are provided on both sides of the outside of the inner frame steel frame 1, and a plurality of reinforcing ribs 14 are provided at one end of the inner top surface of the inner frame steel frame 1. This design strengthens the embedded friction between the two sides of the inner frame steel frame 1 and the door body through the anti-slip teeth 13, and further strengthens the structural strength of the inner frame steel frame 1 through the plurality of reinforcing ribs 14.

[0033] For example, please refer to Figure 2 The positions of the multiple tensioning adjustment operation holes 12 are respectively opened directly above the multiple tensioning mechanisms 3. This design allows a screwdriver to be inserted into the tensioning adjustment operation hole 12 to adjust the tensioning mechanism 3 directly below.

[0034] For example, please refer to Figure 5The reinforcement mechanism 2 includes a reinforcement plate 21, which is slidably connected to the middle part of the reinforcement slide 22. A folding spring 23 is provided at one end of the reinforcement plate 21, and one end of the folding spring 23 is provided at an inner end of the reinforcement slide 22. A plurality of reinforcement joint screws 24 are provided at the other end of the reinforcement plate 21. The middle parts of the plurality of reinforcement joint screws 24 are rotatably connected to one end of the reinforcement plate 21, and one ends of the plurality of reinforcement joint screws 24 are threadedly connected to the lower part of the reinforcement slide 22. This design inserts the reinforcement plate 21 through the reinforcement slide 22, fixes the reinforcement plate 21 through the reinforcement joint screws 24, and adjusts the insertion position of the reinforcement plate 21 through the cooperation of the folding spring 23.

[0035] For example, please refer to Figure 6 A door closer installation opening 211 is provided in the middle of the reinforcing plate 21, and a plurality of door closer screw holes 212 are respectively provided at both ends of the door closer installation opening 211 and in the middle of the reinforcing plate 21. A reinforcing joint block 213 is provided at one end of the bottom surface of the reinforcing plate 21, and the middle part of the reinforcing joint block 213 is rotatably connected to the middle parts of a plurality of the reinforcing joint screws 24. This design fixes the reinforcing plate 21 by having the reinforcing joint block 213 follow the reinforcing joint screws 24.

[0036] For example, please refer to Figure 6 A reinforcement joint fixing block 221 is provided at the lower part of the reinforcement slideway 22, and the middle part of the reinforcement joint fixing block 221 is threadedly connected to one end of multiple reinforcement joint screws 24, and reinforcement triangles 222 are symmetrically provided on both sides of the two ends of the reinforcement joint fixing block 221. This design fixes and adjusts the reinforcement plate 21 through the threaded cooperation of the reinforcement joint fixing block 221 and multiple reinforcement joint screws 24, and reinforces the reinforcement joint fixing block 221 through the reinforcement triangle 222 to further enhance the structural stability.

[0037] For example, please refer to Figure 7-9 The tensioning mechanism 3 includes a tensioning fixing block 31, the two ends of which are fixedly connected to the inner sides of the inner frame 1, and the middle part of the tensioning fixing block 31 is rotatably connected to the upper part of the tensioning adjustment wheel 32. A tensioning adjustment ring 33 is arranged around the lower part of the tensioning adjustment wheel 32, and the two sides of the tensioning adjustment ring 33 are fixedly connected to the inner sides of the inner frame 1. This design rotates the tensioning adjustment wheel 32 to tighten the tensioning adjustment ring 33, and then tightens the outer sides of the inner frame 1 to change the width of the inner frame 1, thereby adapting to the error of the slot width caused by inaccuracy during slotting, and further enhancing the stability of the embedded installation.

[0038] For example, please refer to Figure 7The two ends of the tensioning and fixing block 31 are respectively provided with a plurality of elastic expansion and contraction grooves 311. This design enables the tensioning and fixing block 31 to have a certain elastic expansion and contraction elasticity through the plurality of elastic expansion and contraction grooves 311, thereby preventing the two ends of the tensioning and fixing block 31 from being broken and separated from the inner sides of the inner skeleton steel frame 1 after tensioning.

[0039] For example, please refer to Figure 8-9 The upper end of the tensioning adjustment wheel 32 is provided with an adjusting head 321, and the top surface of the adjusting head 321 is provided with a cross adjusting slot 322, and the bottom surface of the adjusting head 321 is fixedly connected to the upper end of the adjusting shaft 323, and the adjusting shaft 323 is rotatably connected to the middle part of the tensioning fixed block 31, and the lower end of the adjusting shaft 323 is coaxially connected to the middle part of the adjusting wheel body 324, and the adjusting wheel body 324 is elliptical in shape, and adjusting wheels 325 are respectively provided on both sides of the adjusting wheel body 324, and a plurality of adjusting wheels 325 are respectively engaged and connected to the inner two sides of the tensioning adjustment ring 33. This design facilitates the operation of holding a screwdriver through the cross adjusting slot 322, and the adjusting shaft 323 and the adjusting wheel body 324 are driven to rotate by rotating the adjusting head 321, and the tensioning adjustment ring 33 is stretched open by the long axis of the elliptical adjusting wheel body 324 to achieve the tensioning effect.

[0040] For example, please refer to Figure 8-9 , adjustment ring fixing blocks 331 are respectively provided on both sides of the tension adjustment ring 33, and the plurality of adjustment ring fixing blocks 331 are respectively fixedly connected to one side of the inner part of the inner skeleton steel frame 1, and an adjusting wheel limiting groove 332 is opened in the middle of the tension adjustment ring 33, and wheel clamping blocks 333 are respectively provided on both sides of the inner part of the adjusting wheel limiting groove 332. The material of the tension adjustment ring 33 is a flexible material, including but not limited to: polyethylene, nylon. This design limits the adjusting wheel body 324 from slipping off the tension adjustment ring 33 during the adjustment process through the adjusting wheel limiting groove 332, and cooperates with the adjusting wheel 325 through the wheel clamping block 333 to prevent the adjusting wheel body 324 from rotating after the tension adjustment is completed.

[0041] Operation principle: first, insert the reinforcement plate 21 through the reinforcement slide 22, fix the reinforcement plate 21 through the reinforcement joint screws 24, adjust the insertion position of the reinforcement plate 21 through the cooperation of the folding spring 23, and then embed the inner frame 1 into the groove reserved on the top surface of the door body, and strengthen the embedding friction between the two sides of the inner frame 1 and the door body through the anti-slip teeth 13. Finally, insert the screwdriver into the tensioning adjustment operation hole 12 to adjust the tensioning mechanism 3 directly below, and tighten the tensioning adjustment ring 33 by turning the tensioning adjustment wheel 32, and then tighten the outer sides of the inner frame 1 to change the width of the inner frame 1, so as to adapt to the error of the slot width caused by inaccuracy during slotting, and further enhance the stability of the embedded installation.

[0042] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. The inner frame of the door closer of the concealed entrance door is characterized by: It comprises an internal steel frame (1), wherein one end of the internal end of the internal steel frame (1) is provided with a reinforcement mechanism (2), and a lower part of the internal steel frame (1) is provided with a plurality of tensioning mechanisms (3); A reinforcement installation opening (11) is provided at one end of the top surface of the inner frame steel frame (1), a plurality of tension adjustment operation holes (12) are provided in the middle of the top surface of the inner frame steel frame (1), anti-slip teeth (13) are provided on both sides of the outside of the inner frame steel frame (1), and a plurality of reinforcing ribs (14) are provided at one end of the inner top surface of the inner frame steel frame (1); The positions of the plurality of tensioning adjustment operation holes (12) are respectively arranged directly above the plurality of tensioning mechanisms (3); The reinforcing mechanism (2) comprises a reinforcing plate (21), the reinforcing plate (21) being slidably connected to the middle part of the reinforcing slideway (22), a folding spring (23) being provided at one end of the reinforcing plate (21), one end of the folding spring (23) being provided at one end inside the reinforcing slideway (22), a plurality of reinforcing joint screws (24) being provided at the other end of the reinforcing plate (21), the middle parts of the plurality of reinforcing joint screws (24) being rotatably connected to one end of the reinforcing plate (21), and one ends of the plurality of reinforcing joint screws (24) being threadedly connected to the lower part of the reinforcing slideway (22); A door closer installation opening (211) is provided in the middle of the reinforcing plate (21), a plurality of door closer screw holes (212) are respectively provided at both ends of the door closer installation opening (211) and in the middle of the reinforcing plate (21), a reinforcing joint block (213) is provided at one end of the bottom surface of the reinforcing plate (21), and the middle portion of the reinforcing joint block (213) is rotatably connected to the middle portions of the plurality of reinforcing joint screws (24); A reinforcement joint fixing block (221) is provided at the lower part of the reinforcement slideway (22); a middle part of the reinforcement joint fixing block (221) is threadedly connected to one end of a plurality of reinforcement joint screws (24); and reinforcement triangles (222) are symmetrically provided on both sides of both ends of the reinforcement joint fixing block (221); The tensioning mechanism (3) comprises a tensioning fixing block (31), the two ends of which are respectively fixedly connected to the two sides inside the inner frame (1), the middle part of the tensioning fixing block (31) is rotatably connected to the upper part of the tensioning adjustment wheel (32), the lower part of the tensioning adjustment wheel (32) is surrounded by a tensioning adjustment ring (33), and the two sides of the tensioning adjustment ring (33) are respectively fixedly connected to the two sides inside the inner frame (1); A plurality of elastic expansion slots (311) are respectively formed at both ends of the tensioning and fixing block (31); An adjusting head (321) is provided at the upper end of the tensioning adjustment wheel (32), a cross adjusting groove (322) is provided on the top surface of the adjusting head (321), a bottom surface of the adjusting head (321) is fixedly connected to the upper end of an adjusting shaft (323), the adjusting shaft (323) is rotatably connected to the middle of the tensioning fixed block (31), the lower end of the adjusting shaft (323) is coaxially connected to the middle of an adjusting wheel body (324), the adjusting wheel body (324) is elliptical in shape, and adjusting wheels (325) are respectively provided on both sides of the adjusting wheel body (324), and a plurality of adjusting wheels (325) are respectively engaged and connected to both sides of the interior of the tensioning adjustment ring (33).

2. The inner frame of the hidden door closer of claim 1, characterized in that: Adjustment ring fixing blocks (331) are respectively provided on both sides of the tension adjustment ring (33), and a plurality of the adjustment ring fixing blocks (331) are respectively fixedly connected to one side of the interior of the inner skeleton steel frame (1). An adjustment wheel limiting groove (332) is provided in the middle of the tension adjustment ring (33), and adjustment wheel clamping blocks (333) are respectively provided on both sides of the interior of the adjustment wheel limiting groove (332). The material of the tension adjustment ring (33) is a flexible material, and the flexible material includes: polyethylene and nylon.

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