CN202227902U

CN202227902U - Steel door

Info

Publication number: CN202227902U
Application number: CN2011202860786U
Authority: CN
Inventors: 王玉军
Original assignee: TIANJIN HUAXIA FIRE PROTECTION EQUIPMENT CO Ltd
Current assignee: TIANJIN HUAXIA FIRE PROTECTION EQUIPMENT CO Ltd
Priority date: 2011-08-09
Filing date: 2011-08-09
Publication date: 2012-05-23
Anticipated expiration: 2021-08-09

Abstract

The utility model discloses a steel door comprising a surface plate, a back plate and a door spindle, wherein the cross section of the back plate is approximately U-shaped; the surface plate covers the opening part of the U-shaped back plate; an interlayer is formed between the surface plate and the back plate; in the joint of the surface plate and the back plate near one side of the door spindle, the back plate extends to the inner side of a door body and is bent with a 90 DEG angle, so as to form a bent part; a groove concaved to the inner side of the door body is formed on the bent part; the end part of the surface plate extends to the inner side of the door body and is bent, so as to form a clip-shaped part covering the bent part; the initial section of the clip-shaped part is clamped between the surface plate and the bent part, and jointed together with the surface plate and the bent part; a protrusion buckled with the groove is formed on the initial section; the middle section of the clip-shaped part is formed by bending and extending the tail end of the initial section to the door spindle; and the tail end of the clip-shaped part is formed by bending and extending the tail end of the middle section to the groove. The steel door has the advantages that the fastness is high; the possibilities of being broken and disassembled are low; and as no welding point is formed on the door body, the appearance quality of the door body is high.

Description

A kind of steel door

Technical field

The utility model relates to a kind of door, particularly relates to a kind of steel door.

Background technology

With regard to the door leaf structure, the manufacturing process of present most of fire resistance steel doors and steel common door is all relatively backward, and its structure is as depicted in figs. 1 and 2; The panel 1 of door leaf adopts two block plates directly to weld with backboard 2; Panel 1 is substantially a plane, the cross section U-shaped in general of backboard 2, and panel 1 covers the U-shaped opening part of backboard 2; Between panel 1 and backboard 2, form interlayer, in this interlayer, be filled with fire proofing material.Near door-hinge one side, at the interface of panel 1 and backboard 2, panel 1 is inwardly folding, backboard 2 90 degree that bend inwards, and the bending part of the folded part of panel 1 and backboard 2 sticks together, and weld at 3 places at seam crossing, thereby panel 1 is fixedly connected with backboard 2.Though diagram not, away from door-hinge one end, panel 1 also welds together with the same manner with backboard 2; Perhaps panel 1 all extends a segment distance with backboard 2, and the two extended part layer stacks, and through the press pressing, forms lid seam plate, and this lid seam plate is formed with groove, in groove, is provided with fire proofing material.In addition, (descend) U-shaped of shutoff 4 that forms on the door leaf, also be provided with the fire proofing material (not shown) at recess for caving inward.

There is following shortcoming in the steel door of said structure:

1, the solder joint between door skin and the backboard is more, and each solder joint all needs polishing, and small out-of-flatness can appear in surface, polishing back door, the overall appearance of the back influence door that sprays paint.In addition, welding and polishing operation cause labour cost and cost higher;

2, because the side of door adopts two steel plates directly to weld, cause welding insecure, can snap after long-time the use, a body cracking phenomena;

3, the depression of shutoff is excessive about the door leaf, causes fire resistance property to descend;

Summary of the invention

The technical problem that the utility model will solve provides few, the well-set steel door of a kind of solder joint; Another problem that the utility model will solve provides the stronger labeled door of a kind of fire resistance property.

For this reason, the technical scheme of the utility model is following:

A kind of steel door comprises the door body and the door-hinge that is arranged on the Men Tiyi side, the cross section U-shaped in general of said backboard be made up of panel and backboard; Said panel covers the U-shaped opening part of backboard; Between panel and backboard, form interlayer, near the panel of door-hinge one side and the seam crossing of backboard, said backboard extends and bends 90 degree to the door body is inboard; Form kink; Be formed with the groove to the inboard depression of door body on this kink, the end of said panel is to the inboard extension of door body and be bent into back-shaped needle-like, forms the back-shaped portion that encases said kink; This The initial segment of back-shaped is clipped between panel and the kink and with the two and fits together; On The initial segment, be formed with the convexity that is fastened togather with said groove, this stage casing of back-shaped is bent, extends to form to the door-hinge direction by the end of The initial segment, and this end of back-shaped is bent, extends to form to said groove direction by the stage casing end.

Away from said door-hinge one end; The end face of said backboard after the vertical panel direction is extended a segment distance to bending away from the door-hinge direction; Form the curved surface of cross section for trapezoidal shape of the no end, the end face of said panel is along said curved surface extension and encase said curved surface, forms lid seam plate with said curved surface.

Top and bottom at said door body are formed with end plate respectively, and said end plate is bent in opposite directions by said door-plate and backboard and welds together and form at interface, at the middle part of said end plate, is formed with the groove that caves inward along its length.

In described interlayer, in the inboard and described groove of described lid seam plate, be provided with fire proofing material, said fire proofing material is bonded together with the corresponding position of door body.

The steel door of the utility model has changed the drawback of door surface welding in the past, and an abutted seam place of panel and backboard is fastened togather, and other end seam crossing forms lid seam plate through pressing, seaming, good, the difficult orcible entry of the fastness of door body; Because the door surface does not have solder joint, has not only saved operation, also improved the presentation quality of door.In addition, the depression of shutoff is less about the door body, and fire line is good.

Description of drawings

Fig. 1 is the partial sectional view of existing steel reveal face;

Fig. 2 is the welded construction sketch map of existing steel door in door plate;

Fig. 3 is the top plan view of the utility model steel door;

Fig. 4 is the side sectional view of the utility model steel door.

The specific embodiment

Be elaborated below in conjunction with the structure of accompanying drawing to the steel door of the utility model.

At first referring to Fig. 3; The steel door of the utility model comprises: by panel 10 and backboard 11 door body of forming and the door-hinge (not shown) that is arranged on the Men Tiyi side; The cross section U-shaped in general of backboard 11; Panel 10 covers the U-shaped opening part of backboard 11, between panel 10 and backboard 11, forms interlayer, can fill fire proofing material in this interlayer.Near the panel of door-hinge one side and the seam crossing of backboard, backboard 11 extends and bends 90 degree to the door body is inboard, forms kink 15, is formed with the groove 17 to the inboard depression of door body on the kink 15.The end of panel 10 is to the inboard extension of door body and be bent into back-shaped needle-like; Formation encases back-shaped 14 of kink 15; Back-shaped 14 The initial segment is clipped between panel 10 and the kink 15 and with the two and fits together; On this The initial segment, be formed with the convexity 16 that is fastened togather with groove 17, back-shaped 14 stage casing is bent, extends to form to the door-hinge direction by the end of The initial segment, and back-shaped 14 end is bent, extends to form to groove 17 directions by described stage casing end.

Away from door-hinge one end; The end face of backboard 11 after vertical panel 10 directions are extended a segment distance to bending away from the door-hinge direction; Form the curved surface 12 of cross section for trapezoidal shape of the no end; And the end face of panel 10 extends and encases curved surface 12 along curved surface 12, with the curved surface 12 common lid seam plates 13 of forming, on lid seam plate 13, lockset can be installed.For the steel steel door of single fan, this lid seam plate is used to cover the slit between a body and the body of wall; For the double door of splitting, this lid seam plate is used to cover the slit between the two fan doors.

Referring to Fig. 4; Top and bottom at the door body are formed with end plate respectively; This end plate welds together and forms by the bending in opposite directions of door-plate 10 and backboard 11 and at interface; At the middle part of end plate, be formed with the groove 19 that caves inward along its length, in the groove 19 of door body upper and lower side, be provided with fire proofing material 18.

In order to play anti-fire action, the inboard that in the interlayer of door body, reaches lid seam plate is provided with fire proofing material.Fire proofing material is bonded together through bonding adhesive with the contact position of door body.

The assemble method of facing the steel door of the utility model down describes:

1) with the panel of moulding and backboard back-shaped with the kink alignment, back-shaped is plugged on together with kink, then the convexity on back-shaped is snapped in the groove of kink; 2) load onto required various annexes, the wax of removal surface of steel plate, greasy dirt etc. then at the inboard coated with adhesive of door body, are put into fire proofing material, and a fire proofing material and a door body inboard are cemented; 3) with the pressing machine panel of door body opposite side and the joint of backboard prolongation (i.e. two buckles) are pressed together; 4) treat that bonding adhesive is done after, through the nip machine seaming, form lid seam plate; 5) the opposite house body up and down the seam crossing at two ends weld, weld the back and varnish with lacquer through electrostatic spraying, treat that paint is done after, load onto fire proofing material in the groove at end plate place up and down at the door body, accomplish assembling process.

Claims

1. a steel door comprises the door body and the door-hinge that is arranged on the Men Tiyi side, the cross section U-shaped in general of said backboard be made up of panel and backboard; Said panel covers the U-shaped opening part of backboard; Between panel and backboard, form interlayer, it is characterized in that: near the panel of door-hinge one side and the seam crossing of backboard, said backboard extends and bends 90 degree to the door body is inboard; Form kink; Be formed with the groove to the inboard depression of door body on this kink, the end of said panel is to the inboard extension of door body and be bent into back-shaped needle-like, forms the back-shaped portion that encases said kink; This The initial segment of back-shaped is clipped between panel and the kink and with the two and fits together; On The initial segment, be formed with the convexity that is fastened togather with said groove, this stage casing of back-shaped is bent, extends to form to the door-hinge direction by the end of The initial segment, and this end of back-shaped is bent, extends to form to said groove direction by the stage casing end.

2. steel door according to claim 1; It is characterized in that: away from said door-hinge one end; The end face of said backboard after the vertical panel direction is extended a segment distance to bending away from the door-hinge direction; Form the curved surface of cross section for trapezoidal shape of the no end, the end face of said panel is along said curved surface extension and encase said curved surface, forms lid seam plate with said curved surface.

3. steel door according to claim 1 and 2; It is characterized in that: the top and bottom at said door body are formed with end plate respectively; Said end plate is bent in opposite directions by said door-plate and backboard and welds together and form at interface; At the middle part of said end plate, be formed with the groove that caves inward along its length.

4. steel door according to claim 3 is characterized in that: in described interlayer, in the inboard and described groove of described lid seam plate, be provided with fire proofing material, said fire proofing material is bonded together with the corresponding position of door body.