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CN-224213991-U - Controllable door hinge and anti-riot unidirectional and bidirectional door opening and closing device using same

CN224213991UCN 224213991 UCN224213991 UCN 224213991UCN-224213991-U

Abstract

The utility model relates to a controllable door hinge and an anti-riot single-direction door opening and closing device applying the controllable door hinge, wherein the controllable door hinge comprises a central shaft with a polygonal cross section, and a synchronous sleeve, a first sleeve and a second sleeve which are sleeved on the central shaft in sequence, wherein the inner hole of the first sleeve is larger than the central shaft so as to realize relative rotation of the central shaft and the synchronous sleeve, the inner hole of the second sleeve is the same as the cross section of the central shaft so as to realize synchronous rotation of the central shaft and the synchronous sleeve, a first mounting plate sheet used for being connected with a door body is fixedly arranged on the first sleeve, a second mounting plate used for being connected with a door frame is fixedly arranged on the second sleeve, disc teeth capable of being meshed with each other are arranged on the opposite surfaces of the synchronous sleeve and the first sleeve, an upper baffle plate is arranged on the upper end part of the central shaft, a compression spring used for pushing the synchronous sleeve to the first sleeve is arranged between the upper baffle plate and the synchronous sleeve, and a steel wire used for pulling the synchronous sleeve away from the first sleeve is connected on the synchronous sleeve. The controllable door hinge and the anti-riot single and double direction door opening and closing device can limit the rotation of the door when the door is broken by sudden violent force so as to reduce or avoid the invasion of violent molecules into the room.

Inventors

  • NI HUI

Assignees

  • 倪辉

Dates

Publication Date
20260508
Application Date
20250603

Claims (10)

  1. 1. The controllable door hinge is characterized by comprising a central shaft with a polygonal section, a synchronous sleeve, a first sleeve and a second sleeve, wherein the synchronous sleeve, the first sleeve and the second sleeve are sequentially sleeved on the central shaft, an inner hole of the first sleeve is larger than the central shaft so as to realize relative rotation of the central shaft and the synchronous sleeve, an inner hole of the second sleeve is identical to the section of the central shaft so as to realize synchronous rotation of the central shaft and the inner hole of the second sleeve, a first mounting plate for being connected with a door body is fixedly arranged on the first sleeve, a second mounting plate for being connected with a door frame is fixedly arranged on the second sleeve, mutually meshed disc teeth are arranged on opposite surfaces of the synchronous sleeve and the first sleeve, an upper baffle is arranged on the upper end part of the central shaft, a compression spring for pushing the synchronous sleeve to the first sleeve is arranged between the upper baffle and the synchronous sleeve, and a steel wire for pulling the synchronous sleeve away from the first sleeve is connected on the synchronous sleeve.
  2. 2. The controllable door hinge as claimed in claim 1, wherein the cross section of the central shaft is regular hexagon, the inner hole of the first sleeve is circular and the diameter is larger than the diameter of the circumscribed circle of the regular hexagon of the central shaft, so that the first sleeve and the central shaft can rotate relatively.
  3. 3. The controllable door hinge as claimed in claim 2, wherein the outer peripheral surface of the central shaft is provided with balls at positions opposite to the first sleeve.
  4. 4. The controllable door hinge according to claim 1, wherein the second sleeve has a regular hexagonal inner hole section slightly larger than the central shaft section, so as to realize synchronous rotation.
  5. 5. The controllable door hinge as claimed in claim 1, wherein the lower end part of the central shaft is provided with a lower baffle plate which axially moves by limiting the second sleeve, the centers of the upper baffle plate and the lower baffle plate are respectively provided with a through hole, the two end parts of the central shaft are respectively provided with a threaded hole, and bolts penetrate through the through holes and are connected with the threaded holes so as to fix the upper baffle plate and the lower baffle plate with the central shaft.
  6. 6. The controllable door hinge according to claim 5, wherein the upper portion of the central shaft is internally provided with a central hole, the center of the bolt for locking the upper baffle plate is provided with a through hole, the upper portion of the synchronizing sleeve is provided with a screw hole, the steel wire passes through the through hole of the bolt, the central hole and the screw hole of the synchronizing sleeve, and a screw is locked in the screw hole to fix the steel wire and the synchronizing sleeve.
  7. 7. An anti-riot single-direction and double-direction door opening and closing device using the controllable door hinge according to any one of claims 1-6 is characterized by comprising a button box arranged on the back surface of a door body and a sliding block arranged in the button box and used for pulling a steel wire, wherein a double-station self-locking mechanism used for controlling the sliding block to be positioned at a steel wire tensioning station or a steel wire releasing station is arranged in the button box, and the double-station self-locking mechanism is provided with a control button and a reset rod which extend out of the button box.
  8. 8. The device of claim 7, wherein the button box is provided with two groups of steel wire conduits, two steel wires respectively penetrate through the two steel wire conduits, the upper part and the lower part of the door body and the door frame are respectively provided with a controllable door hinge, and the two steel wires are respectively connected with a synchronous sleeve of the controllable door hinge.
  9. 9. The device of claim 8, wherein the button box is provided with a box cover with one side rotatably connected to the box body, an extension spring is arranged between one side of the free end of the box cover and the inner side of the box body, so that the box cover is in an inclined opening state, and the inner side of the box cover is provided with a convex block opposite to the control button.
  10. 10. The anti-violence single and double door opening and closing device according to claim 9, wherein the sliding block is connected with a pulling steel wire, the other end of the pulling steel wire extends out of the button box, and the door lock arranged on the door body is connected with the pulling steel wire so as to pull the sliding block, the steel wire and the synchronous sleeve when the lock core of the door lock is rotated.

Description

Controllable door hinge and anti-riot unidirectional and bidirectional door opening and closing device using same Technical field: The utility model relates to a door hinge structure, in particular to a controllable door hinge and an anti-riot single-direction and double-direction door opening and closing device applying the controllable door hinge. The background technology is as follows: In some countries and regions where security is unstable, robbery events occur during the entrance of rooms, in which case the life security of personnel in the room is threatened. The prior art has searched an explosion door shaft, the bulletin number CN221194683U comprises a shaft rod, an upper shaft sleeve is sleeved at the upper end of the shaft rod, a lower shaft sleeve is sleeved at the lower end of the shaft rod, the upper end of the shaft rod is not in direct contact with the upper shaft sleeve, two needle bearings are arranged between the upper end of the shaft rod and the lower shaft sleeve, the shaft rod is rotatably connected with the upper shaft sleeve and the lower shaft sleeve through the needle bearings, a thrust ball bearing is sleeved on the shaft rod and between the upper shaft sleeve and the lower shaft sleeve, a fixing ring is fixed below the lower shaft sleeve, a first mounting plate is fixed between one side surface of the fixing ring and the lower shaft sleeve, a second mounting plate is fixed on one side of the upper shaft sleeve, an external thread is arranged at one end of the shaft rod extending out of the lower shaft sleeve, and an anti-loose nut is arranged at one end of the shaft rod extending out of the lower shaft sleeve in sequence, and the anti-loose nut is connected with the shaft rod through the external thread in a matching mode. The invention comprises the following steps: In view of the above-mentioned shortcomings of the prior art, the present utility model aims to provide a controllable door hinge and an anti-riot mono-directional door opening and closing device using the controllable door hinge, which can limit the rotation of the door when a sudden violent break occurs, so as to reduce or avoid the invasion of violent molecules into a room. The controllable door hinge is characterized by comprising a central shaft with a polygonal section, a synchronous sleeve, a first sleeve and a second sleeve, wherein the synchronous sleeve, the first sleeve and the second sleeve are sequentially sleeved on the central shaft, an inner hole of the first sleeve is larger than the central shaft so as to realize relative rotation of the central shaft and the synchronous sleeve, an inner hole of the second sleeve is identical to the section of the central shaft so as to realize synchronous rotation of the central shaft and the synchronous sleeve, a first mounting plate for connecting a door body is fixedly arranged on the first sleeve, a second mounting plate for connecting a door frame is fixedly arranged on the second sleeve, mutually meshed disc teeth are arranged on opposite surfaces of the synchronous sleeve and the first sleeve, an upper baffle plate is arranged at the upper end part of the central shaft, a compression spring for pushing the synchronous sleeve to the first sleeve is arranged between the upper baffle plate and the synchronous sleeve, and a steel wire for pulling the synchronous sleeve away from the first sleeve is connected on the synchronous sleeve. Preferably, the cross section of the central shaft is regular hexagon, the inner hole of the first sleeve is circular and the diameter of the inner hole is larger than the diameter of the circumscribed circle of the regular hexagon of the central shaft, so that the first sleeve and the central shaft can rotate relatively. Preferably, the outer peripheral surface of the central shaft is provided with balls at positions opposite to the first sleeve. Preferably, the section of the inner hole of the second sleeve is regular hexagon, and the section of the inner hole is slightly larger than that of the central shaft so as to realize synchronous rotation of the inner hole and the central shaft. Preferably, the lower end part of the central shaft is provided with a lower baffle plate axially moving by a limiting second sleeve, the centers of the upper baffle plate and the lower baffle plate are respectively provided with a through hole, the two end parts of the central shaft are respectively provided with a threaded hole, and a bolt penetrates through the through holes and is connected with the threaded holes so as to fix the upper baffle plate and the lower baffle plate with the central shaft. Preferably, the central hole is formed in the upper portion of the central shaft, a through hole is formed in the center of the bolt for locking the upper baffle plate, a screw hole is formed in the upper portion of the synchronous sleeve, the steel wire penetrates through the through hole of the bolt, the central hole and the screw hole of the s