Door frame of stainless steel glass fireproof door
By using a wrapped, interlocking stainless steel horizontal and vertical frame structure, combined with stainless steel and galvanized steel linings and elastic fireproof seals, the problems of stainless steel welding damage to the finish and insufficient sealing performance are solved, achieving a high-strength, aesthetically pleasing fire door with good sealing and smoke prevention effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WANGDOU JIU AN DOOR CO LTD
- Filing Date
- 2023-09-18
- Publication Date
- 2026-05-05
AI Technical Summary
Stainless steel sheets are prone to damage during welding, and existing fire doors have insufficient sealing and smoke-proof performance.
It adopts a stainless steel horizontal and vertical frame structure with a plug-in design, combined with stainless steel and galvanized steel lining, and uses flexible fireproof seals and heat insulation grooves to ensure compact splicing, high strength, and enhanced sealing and smoke prevention.
This design achieves a compact splicing of stainless steel fire door frames, ensuring both strength and aesthetics, while also improving the sealing and smoke-proof performance of the fire doors.
Smart Images

Figure CN224200481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire door frames, in particular to a stainless steel glass fire door frame. Background Technique
[0002] At present, steel fire doors basically adopt the method of spraying plastic on stainless steel or galvanized steel plates. Among them, the stainless steel surface is smooth, non-combustible, and not easy to rust. The doors made are durable and beautiful, and can prevent the fire from igniting the door during a fire, which is deeply loved by customers. However, for stainless steel plates, the welding method cannot be directly used for processing because the welding points will damage the finish, which is an urgent problem to be solved in the current processing of stainless steel plates. Content of the Utility Model
[0003] The purpose of the utility model is to provide a stainless steel glass fire door frame. The horizontal frame and the vertical frame adopt a covered plug-in connection, ensuring that the frame splicing is compact. It can be directly plugged and locked or welded for reinforcement, which is convenient for transportation and can ensure the strength of the frame. The heat insulation groove is set to ensure the heat insulation effect while ensuring that the holes of the inner lining and the frame edge do not penetrate each other, ensuring beauty. The fireproof rubber strip is set, and an elastic fireproof seal is used to increase the sealing performance and smoke prevention performance of the fire door while preventing fire.
[0004] To achieve the above purpose, the utility model provides a stainless steel glass fire door frame, including a horizontal frame. Vertical frames are provided on both sides of the horizontal frame. The horizontal frame and the vertical frame adopt a covered plug-in connection. The horizontal frame and the vertical frame both have frame edges and inner linings;
[0005] The frame edge includes a front edge and a rear edge. The rear edge is welded to the front edge, and a fireproof rubber strip is pasted at the connection. The fireproof rubber strip is an elastic fireproof seal. The inner lining is provided inside the rear edge and the front edge. A tension bar is welded at the inner side of the inner lining hook edge.
[0006] Preferably, the structures of the horizontal frame and the vertical frame and the structure of the inner lining are all in the shape of "L". The vertical frame is plugged into the horizontal frame. The vertical frame has a plug-in piece, and the horizontal frame has a plug-in hole.
[0007] Preferably, welding holes are pre-punched at the masking position of the rear edge. The inner lining and the front edge are connected by spot welding, and the rear edge and the front edge are connected by spot welding.
[0008] Preferably, the side edges at the inner mouths of the frame edge and the inner lining are in close contact. A relief hole is punched at the inner groove of the frame edge near the masking position.
[0009] Preferably, a heat insulation groove is provided at the inner groove. The inner lining and the front edge are both provided with the heat insulation groove, and the two heat insulation grooves are arranged in parallel and offset.
[0010] Preferably, expansion bolt holes are provided at the inner groove positions of both the inner lining and the front edge, the two expansion bolt holes are concentric, and the size of the expansion bolt hole of the front edge is smaller than the size of the expansion bolt hole of the inner lining.
[0011] Preferably, the outermost edges of both ends of the door frame edging of the horizontal frame are spliced and in close contact with the inner groove of the vertical frame, the front edge punching opening of the horizontal frame is flush with the outer side of the insertion hole of the inner lining, the rear edge is stepped, and a rectangular punching hole is provided at the intersection of the steps.
[0012] Preferably, the door frame edging is made of stainless steel, and the inner lining is made of galvanized steel sheet.
[0013] Therefore, this utility model adopts the above-mentioned stainless steel glass fire door frame. The horizontal and vertical frames are interlocked to ensure that the door frame is tightly spliced. It can be directly plugged in and locked or welded for reinforcement, which is convenient for transportation and can ensure the strength of the door frame. The heat insulation groove is set to ensure the heat insulation effect while ensuring that the holes of the inner lining and the door frame edge do not penetrate each other, thus ensuring aesthetics. Fireproof rubber strips are set and elastic fireproof sealing elements are used to increase the sealing performance and smoke prevention performance of the fire door while providing fire protection.
[0014] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the assembly of the horizontal and vertical frames of an embodiment of a stainless steel glass fireproof door frame according to this utility model;
[0016] Figure 2 This is a three-dimensional structural diagram of the horizontal frame of an embodiment of a stainless steel glass fireproof door frame according to this utility model;
[0017] Figure 3 This is a three-dimensional structural diagram of the vertical frame of an embodiment of a stainless steel glass fireproof door frame according to this utility model;
[0018] Figure 4 This is a cross-sectional view of the vertical frame of an embodiment of a stainless steel glass fireproof door frame according to this utility model.
[0019] Figure Labels
[0020] 1. Horizontal frame; 2. Vertical frame; 3. Front edging; 4. Back edging; 5. Lining; 6. Tie; 7. Elastic fireproof seal; 8. Insert; 9. Insert hole. Detailed Implementation
[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.
[0022] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings as understood by those with ordinary skills in the field to which this utility model pertains. The "first", "second" and similar words used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.
[0023] Embodiment 1
[0024] As shown in the figure, this utility model provides a stainless steel glass fire door frame, which includes a horizontal frame 1. Vertical frames 2 are provided on both sides of the horizontal frame 1. The horizontal frame 1 and the two vertical frames 2 form a door frame to provide support for the fire door. The structures of the horizontal frame 1 and the vertical frames 2 are in an "L" shape. The horizontal frame 1 and the vertical frames 2 are connected by a covering and plugging method. The vertical frames 2 are provided with insertion pieces 8, and the horizontal frame 1 is provided with insertion holes 9. The vertical frames 2 are plugged into the horizontal frame 1, which can ensure that the door frame is tightly spliced, shipped in parts, assembled on site, and can be directly plugged and locked or welded and reinforced, which is convenient for transportation and does not lose strength.
[0025] The outermost edges at both ends of the door frame edge wrapping of the horizontal frame 1 are spliced with the inner notch positions of the vertical frames 2 and are in close contact. The splicing is simple, reducing the height difference on the surfaces of the horizontal frame 1 and the vertical frames 2, being beautiful and having small joints and not being affected by processing errors. The front edge wrapping 3 of the horizontal frame 1 is provided with a flat opening flush with the outside of the insertion hole 9 of the inner lining 5. The rear edge wrapping is in a stepped shape, and a rectangular punching is provided at the stepped intersection position to avoid the position of the insertion hole and ensure that the insertion of the vertical frame 2 is not interfered.
[0026] Both the horizontal frame 1 and the vertical frames 2 are provided with door frame edge wrappings and inner linings 5. The door frame edge wrappings include a front edge wrapping 3 and a rear edge wrapping 4, and the material of the door frame edge wrappings is stainless steel, with strong supporting force and not easy to rust. Welding holes are pre-punched on the rear edge wrapping 4. The front edge wrapping 3 and the rear edge wrapping 4 are welded by overlapping spot welding, and a fireproof rubber strip is pasted at the joint. The fireproof rubber strip is an elastic fireproof sealing member 7. The pre-punched welding holes facilitate welding. The elastic fireproof sealing member increases the sealing performance and smoke prevention performance of the fire door while preventing fire, and can cover the welding points of the front edge wrapping 3 and the rear edge wrapping 4 to achieve a beautiful effect.
[0027] On the inner sides of the rear edge wrap 4 and the front edge wrap 3, there is a lining 5. The material of the lining 5 is galvanized steel sheet, which has good corrosion resistance, paintability, formability and spot welding property, facilitating spot welding with the front edge wrap 3. The structure of the lining 5 is in the shape of "ㄑ", with one side open, and a stay bar 6 is welded at the opening. The stay bar 6 can ensure the strength of the door frame.
[0028] The side edges at the inner opening of the door frame edge wrap and the lining 5 are in close contact, which can prevent smoke from diffusing through the gaps and has good smoke prevention performance. Relief holes are punched at the inner groove opening of the door frame edge wrap near the masking opening position, which can ensure that manufacturing errors and welding errors of the door frame will not affect the splicing, and the position is close to the masking opening position, and a leaky seam elastic fire seal 7 can also cover it.
[0029] Both the lining 5 and the front edge wrap 3 at the inner groove opening are provided with heat insulation grooves. The two heat insulation grooves are arranged in parallel and offset, which can ensure the heat insulation effect while ensuring that the holes of the lining and the door frame edge wrap do not penetrate each other, guaranteeing aesthetics. Both the lining 5 and the front edge wrap 3 are provided with expansion bolt holes at the inner groove opening position. The two expansion bolt holes are concentric, and the size of the expansion bolt hole of the front edge wrap 3 is smaller than that of the expansion bolt hole of the lining 5, which ensures the processing error range and the lining 5 cannot be seen from the outside without affecting aesthetics.
[0030] When using a stainless steel glass fire door frame provided by the present utility model, the lining 5 and the stay bar 6 are welded, then the front edge wrap 3 and the lining 5 are welded, the front edge wrap 3 and the rear edge wrap 4 are welded, and an elastic fire seal 7 is pasted at the connection between the front edge wrap 3 and the rear edge wrap 4 to assemble into the horizontal frame 1 and the vertical frame 2. A plug 8 is punched on the vertical frame 2, and a socket 9 is punched on the horizontal frame 1, and the vertical frame 2 is inserted into the horizontal frame 1.
[0031] Therefore, the present utility model adopts the above-mentioned stainless steel glass fire door frame. The horizontal frame and the vertical frame adopt a covered plug-in connection, which ensures that the door frame splicing is compact, can be directly plugged and locked or welded and reinforced, is convenient for transportation, and can ensure the strength of the door frame. The heat insulation grooves are set to ensure the heat insulation effect while ensuring that the holes of the lining and the door frame edge wrap do not penetrate each other, guaranteeing aesthetics. Fireproof rubber strips are set, and elastic fire seals are adopted, which can increase the sealing performance and smoke prevention performance of the fire door while preventing fire.
[0032] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions of the present utility model or make equivalent replacements, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.
Claims
1. A stainless steel glass fire door frame, characterized in that: It includes a horizontal frame, with vertical frames provided on both sides of the horizontal frame. The horizontal frame and the vertical frames are connected by a wrapped plug-in method. Both the horizontal frame and the vertical frames are provided with door frame edge trims and linings. The door frame edge trim includes a front edge trim and a rear edge trim. The rear edge trim is welded to the front edge trim, and a fireproof rubber strip is pasted at the connection. The fireproof rubber strip is an elastic fireproof seal. The lining is provided inside the rear edge trim and the front edge trim, and a tension bar is welded at the inner side of the lining hem.
2. The stainless steel glass fireproof door frame according to claim 1, characterized in that: The structures of the horizontal frame and the vertical frames and the structure of the lining are all in the shape of "L". The vertical frame is plugged into the horizontal frame. The vertical frame has a punching piece, and the horizontal frame has a punching hole.
3. The stainless steel glass fireproof door frame according to claim 1, characterized in that: Welding holes are pre-punched at the masking position of the rear edge trim. The lining is connected to the front edge trim by spot welding, and the rear edge trim is connected to the front edge trim by spot welding.
4. The stainless steel glass fireproof door frame according to claim 1, characterized in that: The side edges at the inner mouth of the door frame edge trim and the lining are in close contact. Relief holes are punched at the inner groove opening of the door frame edge trim near the masking position.
5. A stainless steel glass fireproof door frame according to claim 4, characterized in that: Heat insulation grooves are provided at the inner groove opening. The lining and the front edge trim are both provided with heat insulation grooves, and the two heat insulation grooves are arranged in parallel and offset.
6. A stainless steel glass fireproof door frame according to claim 4, characterized in that: Expansion bolt holes are provided at the inner groove opening positions of the lining and the front edge trim. The two expansion bolt holes are concentric, and the size of the expansion bolt hole of the front edge trim is smaller than the size of the expansion bolt hole of the lining.
7. A stainless steel glass fireproof door frame according to claim 4, characterized in that: The outermost edges at both ends of the door frame edge trim of the horizontal frame are spliced and in close contact with the inner groove opening of the vertical frame. The flat opening punched on the front edge trim of the horizontal frame is flush with the outside of the insertion hole of the lining. The rear edge trim is in a stepped shape, and a rectangular punching is provided at the stepped intersection position.
8. A stainless steel glass fireproof door frame according to claim 1, characterized in that: The material of the door frame edge trim is stainless steel, and the material of the lining is galvanized steel sheet.