CN2200038Y - Conceal hinge for theft-proof door - Google Patents

Abstract

The utility model discloses a concealed hinge for a theft-proof door, which is composed of a hinge plate, a hinge shaft, and a base, wherein, the base is fixed inside the frame body of a door frame, the longitudinal section of the hinge plate forms a star shape, a pipe barrel on the hinge plate is fixed on the base via the hinge shaft in the rotatable way, a straight edge is fixed on a door leaf and is connected with a connecting plate which penetrates through of a strip-shaped hole on the side of the inner edge of the door frame. The utility model has good concealed performance and high theft-proof performance; moreover, the installing part can not affect the strength of the whole body and the design of the door leaf.

Description

Conceal hinge for theft-proof door

The utility model relates to a kind of hinge that is used for security door, after door is closed, no matter is outdoors particularly, still is all invisible concealed hinge in door.

Present commercially available steel protective door, the used hinge of security door mostly can not satisfy the requirement of the GA25-92 of Ministry of Public Security standard code, common practice is to require efforts on anti-the loosing core of pair of pages template hinge (promptly taking out a core), but, thereby can not fundamentally solve the destroyed problem of hinge because of it still belongs to exposed the installation; Though and door hair style hinge can be loaded on the upper and lower side of door and be protected, because of the bulk strength of the undesirable directly influence in the position of being installed door; Another kind of so-called built-in hinge (as door hinge before the mini van) then is to utilize the part of door case type door leaf body to retrofit from a side to cover hinge basically; it is except that can not be from another lateral protection hinge; returning the design and use of door leaf makes troubles, and install this latent type hinge the door opening angle mostly less than 90 the degree.

The purpose of this utility model is to provide a kind of enough mechanical strengths that both had; the security door that has the self-protection function again is with concealing the type hinge; this hinge both can be used for external-open steel security door; drive the steel security door in can be used for again, and its installation position bulk strength of neither influencing security door does not influence the design of door leaf itself again.

For achieving the above object, the utility model concealed hinge adopts a page or leaf plate, hinge axis and pedestal to form, and wherein pedestal is fixed in the doorframe framework, and a page or leaf plate is one, its longitudinal section be " " type, socket on this page plate part is rotatably mounted on the pedestal by hinge axis, straight portion be fixed on door leaf on and pass that the junction plate along the side cylindrical void links to each other in the doorframe.

Below in conjunction with drawings and Examples the utility model is described in further detail.

Cross-section structure when Fig. 1 is used for external-open steel security door for the utility model.

As can be seen from Figure 1, the utility model is made up of pedestal 1, hinge axis 2 and a page or leaf plate 3, and pedestal 1 is welded in the doorframe framework 4, and its upper surface and lower surface respectively have a hole to pass through for hinge axis 2, and a page plate 3 is one, its longitudinal section be "

" type; the socket of this page plate 3 partly is enclosed within on the hinge axis 2; thus page plate 3 is rotatably mounted on the pedestal 1; straight portion of page or leaf plate 3 be fixed on door leaf 5 on and pass that the junction plates 6 along the side cylindrical void link to each other in the doorframe 4; when door is opened; page or leaf plate 3 can rotate around hinge axis 2, and its maximum opening angle can be spent above 90.When the utility model is installed, the main part (pedestal and axle) of hinge is placed fully the framework 4 of doorframe, thereby can reach the hidden of hinge body, the page or leaf plate 3 of hinge is then pegged graft by cylindrical void and the door leaf 5 along the side in the doorframe 4, when door is closed, page or leaf plate 3 has also obtained hidden, like this, open the door under the situation of door leaf sash structure shape and desirable installation site not changing routine, when door is closed, the total of hinge has all obtained hidden and has been difficult for wrecking, and can be met by the design with the hinge width size of selecting for use of steel plate thickness as for the mechanical strength of hinge self.

The utility model is driven the steel security door in also can be used for except that being used for external-open steel security door, concrete use and use principle are identical.

The utility model compared with prior art has following advantage: (1) is disguised strong, and theftproof performance is good; (2) the installation position bulk strength that neither affects antitheft door does not affect again the design and use of door leaf; (3) both can be used for the external-open Anti-theft door made of steel, and opened Anti-theft door made of steel in can be used for again, the scope of application is wide; (4) can make the opening angle of door greater than 90 degree; (5) simple in structure, easy for installation.

Claims (1)

1, a kind of security door concealed hinge, it is characterized in that: it is made up of page or leaf plate, hinge axis and pedestal, wherein pedestal is fixed in the doorframe framework, the page or leaf plate be one, its longitudinal section be "

" type, socket on this page plate part is rotatably mounted on the pedestal by hinge axis, straight portion be fixed on door leaf on and pass that the junction plate along the side cylindrical void links to each other in the doorframe.

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