Controllable door hinge and anti-violent one-way and two-way door opening and closing device applying controllable door hinge

Abstract

The utility model relates to a controllable door hinge and an anti-violence one-way and two-way door opening and closing device applying the controllable door hinge, and the controllable door hinge comprises a central shaft with a polygonal section, and a synchronous sleeve, a first sleeve and a second sleeve which are sequentially sleeved on the central shaft, an inner hole of the first sleeve is larger than the center shaft so that the first sleeve and the center shaft can rotate relatively, an inner hole of the second sleeve is the same as the section of the center shaft so that the second sleeve and the center shaft can rotate synchronously, and a first installation plate piece used for being connected with a door body is fixedly arranged on the first sleeve. A first mounting plate sheet used for being connected with a door frame is fixedly arranged on the first sleeve, a second mounting plate sheet used for being connected with the door frame is fixedly arranged on the second sleeve, disc teeth capable of being meshed with each other are arranged on the face, opposite to the first sleeve, of the synchronous sleeve, an upper blocking piece is arranged at the upper end of the center shaft, and a compression spring used for pushing the synchronous sleeve to the first sleeve is arranged between the upper blocking piece and the synchronous sleeve. A steel wire used for pulling the synchronous sleeve away from the first sleeve is connected to the synchronous sleeve. The controllable door hinge and the anti-violence one-way and two-way door opening and closing device can limit rotation of the door when the door is broken violently suddenly so as to reduce or prevent violence people from entering a room and damaging the door.

Description

Technical fields:

[0002] This utility model relates to a door hinge structure, and more particularly to a controllable door hinge and an anti-violent single and double-direction door opening and closing device using the controllable door hinge. Background technology:

[0004] In some countries and regions with unstable public security, home invasion robberies occur frequently, threatening the lives of people inside the homes.

[0005] The currently searched Chinese patent "A door hinge for an explosion-proof door", publication number CN221194683U, includes a shaft, with an upper sleeve fitted at the upper end of the shaft and a lower sleeve fitted at the lower end. The upper end of the shaft and the upper sleeve are not in direct contact. Two needle roller bearings are installed between the upper end of the shaft and the upper sleeve, and two needle roller bearings are also provided between the lower end of the shaft and the lower sleeve. The shaft is rotatably connected to the upper and lower sleeves via the needle roller bearings. A thrust ball bearing is fitted on the shaft and located between the upper and lower sleeves. A fixed lower sleeve is attached to the shaft. A fixed ring is provided, and a mounting plate is fixed between one side of the fixed ring and the lower bushing. A mounting plate is fixed to one side of the upper bushing. An upper retaining ring, a first disc spring, a second disc spring, and a lower retaining ring are installed in sequence at one end of the shaft extending out of the lower bushing. An external thread is provided at one end of the shaft extending out of the lower retaining ring, and an anti-loosening nut is connected to the shaft through the external thread. Although this patent can increase the service life of the door hinge and make it easy to open and close the door, it cannot restrict the rotation of the door in the event of a sudden violent breach, so as to reduce or avoid violent intruders from entering the room. Summary of the Invention:

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a controllable door hinge and an anti-violence single / double-direction door opening and closing device using the controllable door hinge. The controllable door hinge and the anti-violence single / double-direction door opening and closing device can restrict the rotation of the door in the event of a sudden violent breach, so as to reduce or avoid violent intruders from entering the room.

[0008] This utility model relates to a controllable door hinge, characterized in that it includes a central shaft with a polygonal cross-section and a synchronous sleeve, a first sleeve, and a second sleeve sequentially sleeved on the central shaft. The inner hole of the first sleeve is larger than that of the central shaft to allow relative rotation between the two. The inner hole of the second sleeve has the same cross-section as that of the central shaft to allow synchronous rotation between the two. A first mounting plate for connecting to the door body is fixed on the first sleeve, and a second mounting plate for connecting to the door frame is fixed on the second sleeve. The surfaces of the synchronous sleeve and the first sleeve opposite each other are provided with meshing disc teeth. An upper baffle is provided on the upper end of the central shaft. A compression spring is provided between the upper baffle and the synchronous sleeve to push the synchronous sleeve toward the first sleeve. A steel wire is connected to the synchronous sleeve to pull the synchronous sleeve away from the first sleeve.

[0009] Preferably, the cross-section of the central shaft is a regular hexagon, and the inner hole of the first sleeve is circular with a diameter larger than the circumcircle diameter of the regular hexagon of the central shaft, so as to enable the first sleeve and the central shaft to rotate relative to each other.

[0010] Preferably, a ball bearing is provided on the outer circumferential surface of the central shaft at the position opposite to where the first sleeve is fitted.

[0011] Preferably, the inner cross-section of the second sleeve is a regular hexagon, which is slightly larger than the regular hexagon of the central axis cross-section, so as to achieve synchronous rotation of the two.

[0012] Preferably, the lower end of the central shaft is provided with a lower baffle plate to limit the axial movement of the second sleeve. The center of both the upper baffle plate and the lower baffle plate is provided with a through hole. Both ends of the central shaft are provided with threaded holes. Bolts pass through the through holes and connect with the threaded holes to fix the upper baffle plate and the lower baffle plate to the central shaft.

[0013] Preferably, the upper part of the central shaft has a central channel, the bolt for locking the upper baffle has a through hole in the center, the upper part of the synchronization sleeve has a screw hole, the steel wire passes through the through hole of the bolt, the central channel and the screw hole of the synchronization sleeve, and a screw is locked in the screw hole to fix the steel wire and the synchronization sleeve.

[0014] The present invention relates to a single- and double-sided anti-violent door opening and closing device, characterized in that: it includes a button box installed on the back of the door body and a slider for pulling steel wire inside the button box. The button box is provided with a dual-position self-locking mechanism for controlling the slider to be in the position of pulling steel wire or releasing steel wire. The dual-position self-locking mechanism is provided with a control button and a reset rod extending out of the button box.

[0015] Preferably, the button box is provided with two sets of wire guide tubes, with two wires passing through the two wire guide tubes respectively. Controllable door hinges are installed on the upper and lower parts of the door body and door frame respectively, and the two wires are respectively connected to the synchronization sleeves of the controllable door hinges.

[0016] Preferably, the button box is provided with a cover that is rotatably connected to the box body on one side. A tension spring is provided between the free end of the cover and the inner side of the box body so that the cover is tilted and opened. A protrusion is provided on the inner side of the cover that is directly opposite the control button.

[0017] Preferably, the slider is connected to a pull wire that extends beyond the button box at the other end. The door lock installed on the door is connected to the pull wire so that the slider, the wire and the timing sleeve are pulled when the lock cylinder of the door lock is turned.

[0018] This utility model relates to a controllable door hinge and an anti-violent single / double-direction door opening and closing device, which can restrict the rotation of the door in the event of a sudden violent breach, so as to reduce or avoid violent intruders from entering the room.

[0019] This utility model can restrict the door from rotating inward (applicable to inward-opening doors) or outward (applicable to outward-opening doors) in the event of a sudden violent breach. When the inner cover of the door is pressed, the door leaf is restricted from opening inward in inward-opening doors, but this does not affect the ability of people inside the house to turn the door outward to close it. This achieves the function of only being able to close the door, while preventing people outside from pushing it in. (The same principle applies to outward-opening doors, where only people inside the house can close the door inward, and people outside cannot open it.) After pressing the reset lever, the entire door is no different from an ordinary door. Attached image description:

[0021] The present invention will be further described below with reference to the accompanying drawings;

[0022] Figure 1 This is a cross-sectional schematic diagram of the controllable hinge of this utility model;

[0023] Figure 2 It is a three-dimensional view of the central axis;

[0024] Figure 3 It is a 3D diagram of the synchronization sleeve;

[0025] Figure 4 This is a three-dimensional view of the first sleeve 3;

[0026] Figure 5 This is a three-dimensional view of the second sleeve 4;

[0027] Figure 6 This is a schematic diagram of the structure of the anti-violent single and double-sided door opening and closing device of this utility model;

[0028] Figure 7 It is a 3D view of the button box;

[0029] Figure 8 This is a 3D view of the button box in the tension wire position;

[0030] Figure 9 This is a 3D view of the button box at the wire feeding station;

[0031] Figure 10 This is a schematic diagram of the internal structure of a dual-station self-locking mechanism;

[0032] Figure 11 yes Figure 10 Cross-sectional view. Detailed implementation method:

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] The controllable door hinge of this utility model includes a central shaft 1 with a polygonal cross-section and a synchronous sleeve 2, a first sleeve 3 and a second sleeve 4 sequentially sleeved on the central shaft. The inner hole of the first sleeve 3 is larger than that of the central shaft 1 so that the two can rotate relative to each other. The inner holes of the synchronous sleeve 2 and the second sleeve 4 are the same as the cross-section of the central shaft so that the two can rotate synchronously.

[0036] Specifically, the cross-section of the central shaft is a regular hexagon, and the inner hole of the first sleeve is circular with a diameter larger than the circumcircle diameter of the regular hexagon of the central shaft, so that the first sleeve and the central shaft can rotate relative to each other. A ball bearing 11 is provided on the outer circumference of the central shaft at the position opposite to where the first sleeve is fitted, so that the first sleeve can rotate more smoothly relative to the central shaft.

[0037] The inner cross-section of the synchronizing sleeve 2 and the second sleeve 4 is a regular hexagon, which is slightly larger than the regular hexagon of the central axis cross-section, so as to achieve synchronous rotation of the two.

[0038] The first sleeve 3 is fixedly provided with a first mounting plate 5 for connecting with the door body. The first mounting plate 5 and the door body can be locked together by screws. The second sleeve 4 is fixedly provided with a second mounting plate 6 for connecting with the door frame. The second mounting plate 6 and the door frame can be locked together by screws. The synchronous sleeve 2 and the first sleeve 3 are provided with interlocking disc teeth 7 on their opposite surfaces.

[0039] An upper baffle 8 is provided on the upper end of the central shaft. A compression spring 9 is provided between the upper baffle 8 and the synchronization sleeve 2 to push the synchronization sleeve toward the first sleeve. A steel wire 10 is connected to the synchronization sleeve to pull the synchronization sleeve away from the first sleeve. When the pulling force of the steel wire 10 is greater than the elastic force of the compression spring, the synchronization sleeve 2 and the first sleeve 3 move away from each other and engage in transmission. When the pulling force of the steel wire 10 is less than the elastic force of the compression spring, the synchronization sleeve 2 and the first sleeve 3 move closer to each other and engage in transmission.

[0040] The lower end of the aforementioned central shaft 1 is provided with a lower baffle 12 to limit the axial movement of the second sleeve. A circular flange is provided on the central shaft, and the second sleeve is limited by the circular flange and the lower baffle.

[0041] Both the upper and lower baffles have through holes in their centers, and both ends of the central shaft have threaded holes. Bolts 13 pass through the through holes and connect with the threaded holes to fix the upper and lower baffles to the central shaft.

[0042] The upper part of the central shaft has a central channel 14. The bolt for locking the upper baffle has a through hole in the center. The upper part of the synchronization sleeve has a screw hole 15 that connects to the central channel. The steel wire passes through the through hole of the bolt, the central channel 14 and the screw hole 15 of the synchronization sleeve. A screw is locked in the screw hole to fix the steel wire and the synchronization sleeve. When the steel wire extending from the upper end of the central shaft is pulled by force, it can drive the synchronization sleeve away from the first sleeve.

[0043] The above structure achieves the following: when the steel wire pulls the synchronizing sleeve away from the first sleeve, the synchronizing sleeve and the first sleeve are not engaged, and the first sleeve and the second sleeve can rotate relative to each other, that is, the door can rotate relative to the door frame; when the steel wire pulls the synchronizing sleeve closer to the first sleeve, the synchronizing sleeve and the first sleeve engage, and the first sleeve and the second sleeve cannot rotate relative to each other, that is, the door and the door frame cannot rotate relative to each other.

[0044] This utility model relates to an anti-violent single / double-direction door opening and closing device, comprising a button box A1 installed on the back of the door body A12 and a slider A2 disposed inside the button box for pulling the steel wire 10. The button box is provided with a dual-position self-locking mechanism A3 for controlling the slider A2 to be in the tension position or the release position of the steel wire. The dual-position self-locking mechanism A3 is provided with a control button A4 and a reset rod A5 extending out of the button box. The dual-position self-locking mechanism A3 is a commercially available mechanical component. The inner end of the reset rod A5 is fixedly connected to the slider. When the outer end of the reset rod is pushed into the button box, the slider can pull the steel wire to the tension position. When the control button is pressed, the slider and the reset rod are driven back to the release position.

[0045] The specific structure of the dual-station self-locking mechanism A3 is as follows: The dual-station self-locking mechanism A3 includes an outer shell A31 fixed inside the button box and a reset rod A5 disposed inside the outer shell A31. The reset rod A5 is provided with a return flange A32 and a limiting block A33. A return spring A34 is provided between the return flange A32 and the inner wall of the outer shell. A limiting slider A35, which cooperates with the limiting block, is provided inside the outer shell and located beside the limiting block A33. The limiting slider A35 is slidably connected to the outer shell, and a push spring A36 is provided between the outer shell and the limiting slider A35. The push spring A36 pushes the limiting slider A35 closer to the reset rod A5. The limiting slider A35 is provided with a wedge A37. The control button A4 is limited to move in a direction perpendicular to the bottom surface of the outer shell, and the lower end of the control button A4 acts on the inclined surface of the wedge. Thus, when the control button A4 is pressed against the bottom surface of the outer shell, it acts on the inclined surface of the wedge, thereby driving the limiting slider A35 away from the reset rod and causing the limiting slider A35 to disengage from the limiting block A33. The reset rod then moves to one side under the action of the return spring A34 (right side of the figure).

[0046] The button box is equipped with two sets of wire guide tubes A6, and two wires 10 pass through the two wire guide tubes A6 respectively. Controllable door hinges are installed on the upper and lower parts of the door body A12 and the door frame A13 respectively. The two wires 10 are connected to the synchronization sleeves 2 of the controllable door hinges respectively. Better control effect can be achieved through the two sets of wires 10 and the controllable door hinges.

[0047] The button box has a cover A8 that is rotatably connected to the box body A7 on one side. A tension spring A9 is provided between the free end of the cover and the inner side of the box body to make the cover tilted open. That is, the tension spring A9 is relatively long. In the natural state, the cover is tilted. The inner side of the cover has a protrusion A10 that is opposite to the control button. In case of emergency of forced entry, or when people inside the room find that there is a possibility of forced entry when preparing to open the door, they can press the cover. At this time, the protrusion presses the control button, causing the slider to move to the wire feeding position. The synchronous sleeve approaches the first sleeve under the action of the compression spring when there is no tension. The synchronous sleeve and the first sleeve engage and drive. Since the synchronous sleeve and the second sleeve rotate synchronously with the central shaft, the first sleeve engages with the synchronous sleeve. Even if the first sleeve and the second sleeve cannot rotate relative to each other, that is, the door cannot rotate relative to the door frame, thus locking the door and preventing forced entry.

[0048] To allow unlocking the door with a key in case the user forgets to reset the reset lever after a violent incident, a pull wire A11 extending beyond the button box is connected to the slider. The door lock installed on the door is connected to the pull wire, so that when the lock cylinder is turned, the slider A2, wire 10, and synchronization sleeve 2 are pulled. After the violent incident is resolved, the user inside can unlock the door by resetting the reset lever. If the user outside forgets to reset the reset lever, the user with the key can unlock the door by opening the lock. The lock cylinder rotates, causing the pull wire to move, which in turn pulls the slider A2, wire 10, and synchronization sleeve 2, causing the synchronization sleeve to move away from the first sleeve, thus unlocking the door.

[0049] This utility model can restrict the door from rotating inward (applicable to inward-opening doors) or outward (applicable to outward-opening doors) in the event of a sudden violent breach. When the inner cover of the door is pressed, the door leaf is restricted from opening inward in inward-opening doors, but this does not affect the ability of people inside the house to turn the door outward to close it. This achieves the function of only being able to close the door, while preventing people outside from pushing it in. (The same principle applies to outward-opening doors, where only people inside the house can close the door inward, and people outside cannot open it.) After pressing the reset lever, the entire door is no different from an ordinary door.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A controllable door hinge, characterized in that: The device includes a central shaft with a polygonal cross-section and a synchronization sleeve, a first sleeve, and a second sleeve sequentially fitted onto the central shaft. The inner hole of the first sleeve is larger than that of the central shaft to allow relative rotation between the two. The inner hole of the second sleeve has the same cross-section as that of the central shaft to allow synchronous rotation between the two. A first mounting plate for connecting to the door body is fixed on the first sleeve, and a second mounting plate for connecting to the door frame is fixed on the second sleeve. The surfaces of the synchronization sleeve and the first sleeve opposite each other are provided with meshing disc teeth. An upper baffle is provided on the upper end of the central shaft. A compression spring is provided between the upper baffle and the synchronization sleeve to push the synchronization sleeve toward the first sleeve. A steel wire is connected to the synchronization sleeve to pull the synchronization sleeve away from the first sleeve.

2. The controllable door hinge according to claim 1, characterized in that: The cross-section of the central shaft is a regular hexagon, and the inner hole of the first sleeve is circular with a diameter larger than the circumcircle diameter of the regular hexagon of the central shaft, so that the first sleeve and the central shaft can rotate relative to each other.

3. The controllable door hinge according to claim 2, characterized in that: The outer circumference of the central shaft is provided with ball bearings at the position where the first sleeve is fitted.

4. The controllable door hinge according to claim 1, characterized in that: The inner cross-section of the second sleeve is a regular hexagon, which is slightly larger than the regular hexagon of the central axis cross-section, so as to achieve synchronous rotation of the two.

5. The controllable door hinge according to claim 1, characterized in that: The lower end of the central shaft is provided with a lower baffle plate that limits the axial movement of the second sleeve. Both the upper and lower baffle plates have through holes in their centers. Both ends of the central shaft are provided with threaded holes. Bolts pass through the through holes and connect with the threaded holes to fix the upper and lower baffle plates to the central shaft.

6. The controllable door hinge according to claim 5, characterized in that: The upper part of the central shaft has a central channel, and the bolt for locking the upper baffle has a through hole in the center. The upper part of the synchronization sleeve has a screw hole. The steel wire passes through the through hole of the bolt, the central channel and the screw hole of the synchronization sleeve. A screw is locked in the screw hole to fix the steel wire and the synchronization sleeve.

7. A riot-resistant single / double-acting door opening and closing device using any one of the controllable door hinges described in claims 1-6, characterized in that: It includes a button box installed on the back of the door and a slider inside the button box for pulling the steel wire. The button box is equipped with a dual-position self-locking mechanism for controlling the slider to be in the position of pulling the steel wire or releasing the steel wire. The dual-position self-locking mechanism is equipped with a control button and a reset rod that extend out of the button box.

8. The anti-violent single / double-direction door opening and closing device according to claim 7, characterized in that: The button box is equipped with two sets of wire guide tubes, with two wires passing through the two wire guide tubes respectively. Controllable door hinges are installed on the upper and lower parts of the door body and door frame respectively, and the two wires are connected to the synchronization sleeves of the controllable door hinges respectively.

9. The anti-violent single / double-direction door opening and closing device according to claim 8, characterized in that: The button box has a cover that is rotatably connected to the box body on one side. A tension spring is provided between the free end of the cover and the inner side of the box body so that the cover is tilted and opened. A protrusion is provided on the inner side of the cover, which is directly opposite the control button.

10. The anti-violent single / double-sided door opening and closing device according to claim 9, characterized in that: The slider is connected to a pull wire that extends beyond the button box at the other end. The door lock installed on the door is connected to the pull wire so that the slider, the wire and the timing sleeve are pulled when the lock cylinder of the door lock is turned.

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