An automatic reset door

Abstract

This invention discloses an automatic reset door, comprising: a door hinge assembly connected to the door body and having a spiral groove on its circumference; a compression member sleeved on the outside of the door hinge assembly; a rotating assembly including a sliding block disposed on the top of the compression member and a deep groove ball bearing, the deep groove ball bearing being connected to the sliding block and disposed within the spiral groove, wherein when the sliding block is lifted and moved upward by the compression member, the deep groove ball bearing can roll within the spiral groove to drive the door hinge assembly to rotate along its own axis to achieve automatic reset of the door body; an assisting component rotatably connected to the door hinge assembly, used for forward pushing to compress the compression member and accelerate the opening of the door body or reverse pushing to slowly close the door body; and a supplementary force component retractably disposed on one side of the door body, used to extend to cooperate with the assisting component to provide supplementary force to rotate the door body to the open state and maintain it, or to retract to reset the door body to the closed state. The above-mentioned automatic reset door is easy to open and close and ensures the smooth and safe passage of personnel, guaranteeing the safety and reliability of the overall operation.

Description

Technical Field

[0001] This invention relates to the field of opening and closing doors in public facilities, and more specifically, to an automatic reset door. Background Technology

[0002] With the development of industrial technology, energy saving and simplified drive control have become popular research directions for technical equipment. Among them, doors in common places are often set as automatic reset doors, which automatically close after people pass through.

[0003] In related technologies, reset doors often use a single elastic element such as a tension spring or torsion spring to achieve their reset function. When opening the door, a person needs to push the door until it is open, and when closing the door, the elastic potential energy of the elastic element quickly resets it. In this method, opening the door relies entirely on pushing by a person, and the force required increases as the door opens, making it relatively laborious and time-consuming. When closing the door, the elastic potential energy generated when the door is fully open is large, resulting in a very rapid closing. However, if a person releases their grip before completely leaving the door or if someone behind has already reached the door, a collision accident may occur, resulting in poor safety.

[0004] In conclusion, how to improve the convenience of opening and closing automatic reset doors while ensuring safety and reliability is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide an automatic reset door that is easy and convenient to open and close, ensures the smooth and safe passage of personnel, guarantees the safety and reliability of the overall operation, and improves the user experience.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An automatic reset door, comprising:

[0008] A door hinge assembly is connected to the door body and has a spiral groove on its circumference.

[0009] A compression component is fitted onto the outside of the door hinge assembly;

[0010] The rotating assembly includes a sliding block disposed on the top of the compression member and a deep groove ball bearing. The deep groove ball bearing is connected to the sliding block and disposed in the spiral groove. When the sliding block is lifted and moved upward by the compression member, the deep groove ball bearing can roll in the spiral groove to drive the door hinge assembly to rotate along its own axis to realize the automatic reset of the door body.

[0011] An assist component, rotatably connected to the door hinge assembly, is used to push forward to compress the compression member and accelerate the opening of the door, or push backward to slowly close the door;

[0012] A force-replenishing component is telescopically disposed on one side of the door body, for extending to cooperate with the assist component to provide supplementary force to rotate the door body to the open state and maintain it, or for retracting to reset the door body to the closed state.

[0013] Preferably, the bottom of the door hinge assembly is provided with a base, and the sliding block is slidably connected to a plurality of sliding rods provided on the base.

[0014] Preferably, a horizontally arranged support shaft is fixed on the sliding block, and the deep groove ball bearing is disposed on the support shaft and can roll within the spiral groove.

[0015] Preferably, the assist component includes:

[0016] The power steering plate is connected to the door hinge assembly via a connector;

[0017] A tension spring, partially wound around the circumference of the booster disc;

[0018] An adjusting screw is connected to the base, one end of the tension spring is connected to the assist plate, and the other end of the tension spring is connected to the adjusting screw.

[0019] Preferably, the adjusting screw is disposed on the connecting plate and has an adjusting part, which can extend out of the connecting plate by different lengths to adjust the tension of the tension spring.

[0020] Preferably, the base is connected to a limiting post via a connecting plate, and the assist plate is also provided with a stop post. The limiting post is located on the rotation path of the stop post to prevent its rotation.

[0021] Preferably, the force-reinforcing component includes:

[0022] A sensor sheet is disposed on the door hinge assembly, and either the door hinge assembly or the sensor sheet is provided with an elongated slot for connection between the two.

[0023] A proximity sensor is connected to the base and signal-connected to the sensing element;

[0024] An electromagnet is connected to the proximity sensor. When the proximity sensor receives information from the sensing plate and transmits it to the electromagnet, a force-reinforcing block on the electromagnet can extend to provide additional force and push the door to continue rotating to the open state and maintain it.

[0025] The stop block base is connected to the push rod of the electromagnet, and the force-reinforcing stop block is disposed on the stop block base. Either the stop block base or the force-reinforcing stop block is provided with a long slot for connecting the two.

[0026] A support rod is connected to the door hinge assembly, and a roller is rotatably connected to the support rod.

[0027] A supplementary rod is provided on the supplementary stop block. The roller makes rolling contact with the supplementary rod. The supplementary rod is inclined so that when the push rod of the electromagnet extends, the supplementary rod can press the rolling body on the door hinge assembly to make the door rotate.

[0028] An infrared beam sensor is located on one side of the door and is used to detect personnel passage information. When the infrared beam sensor transmits the personnel passage information to the electromagnet, the force-reducing block retracts to reset the door to the closed state.

[0029] Preferably, a limiting block is provided on the outer periphery of the door hinge assembly, and a limiting adjustment screw is connected to the limiting block. The limiting adjustment screw can pass through the limiting block to adjust the distance between it and the limiting part on the door hinge assembly.

[0030] Preferably, the top of the door hinge assembly is also rotatably connected to an upper support cover, which is used to connect to an external fixed device.

[0031] Preferably, the four sliding rods are evenly distributed around the base, and each sliding rod and the sliding block are provided with an oil-free bushing at the connection point.

[0032] The automatic reset door provided by this invention includes a door hinge assembly, a compression component, a rotating assembly, an assisting component, and a supplementary force assembly. The door hinge assembly is connected to the door body, and the door body rotates with the door hinge assembly to open and close. The compression component is sleeved on the outside of the door hinge assembly. The rotating assembly includes a sliding block on top of the compression component and a deep groove ball bearing. The deep groove ball bearing is connected to the sliding block and located within a helical groove. When the sliding block is lifted upwards by the compression component, the deep groove ball bearing and the helical groove on the door hinge assembly form a helical pair, causing the deep groove ball bearing to roll within the helical groove, thereby pushing the door hinge assembly to rotate along its own axis, achieving automatic reset of the door body. This rolling connection reduces wear and improves the service life of the components. The assisting component is rotatably connected to the door hinge assembly. When the door body is opened, the assisting component pushes forward to compress the compression component and accelerates the opening of the door body. The supplementary force assembly assists the assisting component to further provide supplementary force for opening the door body. To ensure the door is fully open, the combined action of the assist component and the supplementary force component reduces the force required to push the door, improving the user experience. When the door is closing, the assist and supplementary force components work together to automatically reset the door using the compressive force exerted on the compression components when the door was opened. The assist component can also push in the opposite direction to slow the closing speed, ensuring safe passage for personnel. The supplementary force component, retractable and mounted on one side of the door, extends to assist the assist component when the force of the assist component and the rotational inertia of the door are insufficient to continue opening the door quickly enough, maintaining the open position for smooth passage. When the door needs to be closed after passage, the supplementary force component retracts to ensure the door closes smoothly under the combined action of the compression force and the assist component, ensuring safe and reliable passage for personnel. This automatic reset door is easy and convenient to open and close, ensuring safe and reliable passage for personnel, guaranteeing overall operational safety and improving the user experience. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of the automatic reset door provided by the present invention;

[0035] Figure 2 This is a front view of the automatic reset door provided by the present invention;

[0036] Figure 3 for Figure 2 A partial sectional view;

[0037] Figure 4 A top view of the automatic reset door provided by the present invention in its initial state;

[0038] Figure 5 The automatic reset door provided by the present invention is shown in a top view when rotated to 36°.

[0039] Figure 6 The automatic reset door provided by the present invention is shown in a top view when rotated to 75°.

[0040] Figure 7 This is a top view of the automatic reset door provided by the present invention when rotated to 85°.

[0041] Figure 8 This is a schematic diagram showing the extension of the force-repairing block when the automatic reset door provided by the present invention is rotated to 85°;

[0042] Figure 9 This is a top view of the automatic reset door provided by the present invention when rotated to 90°.

[0043] Figure 10 This is a schematic diagram showing the force-reinforcing block fully extending when the automatic reset door of the present invention is rotated to 90°;

[0044] Figure 11 This is a connection diagram of the automatic reset door provided by the present invention in practical application;

[0045] Figure 12 A schematic diagram illustrating the key design points of the automatic reset door linkage mechanism provided by this invention;

[0046] Figure 13 Another schematic diagram illustrating the key design points of the automatic reset door linkage mechanism provided by this invention.

[0047] Figures 1-13 In the accompanying drawings, the reference numerals include:

[0048] 1. Base; 2. Compression component; 3. Sliding rod; 4. Sliding block; 5. Oil-free bushing; 6. Door hinge assembly; 7. Fixing plate; 8. First bearing; 9. Support shaft; 10. Deep groove ball bearing; 11. Wear-resistant plate; 12. Connecting plate; 13. Tension spring; 14. Fastening screw; 15. Power assist plate; 16. Adjusting screw; 17. Stop post; 18. Limit post; 19. Pin shaft; 20. Wear-resistant pad; 21. Connecting component; 22. Limiting block; 23. Upper support cover; 24. Limiting adjustment screw; 25. Second bearing; 26. Door body; 27. Sensor plate; 28. Stop block base; 29. ​​Bending plate; 30. Proximity sensor; 31. Electromagnet; 32. Infrared beam sensor; 33. Force-reinforcing stop block; 34. Support rod; 35. Roller; 36. Force-reinforcing rod; 61. Spiral groove; 62. Limiting part; 161. Adjusting part. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] The core of this invention is to provide an automatic reset door that is easy and convenient to open and close, ensuring the smooth and safe passage of personnel, guaranteeing the overall safety and reliability of the operation, and improving the user experience.

[0051] The automatic reset door provided by this invention includes a door hinge assembly 6, a compression component 2, a rotation component, an assist component, and a force-replenishing component. Please refer to [reference needed]. Figures 1 to 3 .

[0052] The door hinge assembly 6 is connected to the door body 26. When the door hinge assembly 6 rotates, the door body 26 rotates accordingly to open and close the door. A first bearing 8 and a second bearing 25 are also provided at the upper and lower ends of the door hinge assembly 6 to provide rotational support. The first bearing 8 is preferably an angular contact bearing, and the second bearing 25 is preferably a deep groove ball bearing to ensure smooth and reliable rotation of the door hinge assembly 6.

[0053] The compression member 2 is sleeved on the outside of the door hinge assembly 6. The compression member 2 is preferably a spring. In the initial state, the compression member 2 has a certain amount of compression, which can provide a certain assistance to the upward movement of the sliding block 4 on its top so that the door body 26 can be reset.

[0054] When the compression component 2 is a spring, since it is installed on the outer periphery of the door hinge assembly 6, it has sufficient adjustable space in the circumferential direction. The free length of the compression component 2 can be flexibly adjusted according to the actual operation, reducing its compression ratio, so as to maximize the service life of the compression component 2 and reduce the operating cost.

[0055] The rotating assembly includes a sliding block 4 located on top of the compression member 2 and a deep groove ball bearing 10. The deep groove ball bearing 10 is connected to the sliding block 4 and located in the spiral groove 61. When the compression member 2 pushes the door body 26 forward with the assistance of the assisting assembly and the supplementary assembly, the compression obtained lifts the sliding block 4. The deep groove ball bearing 10 can roll in the spiral groove 61 to push the door shaft assembly 6 to rotate along its own axis, so as to realize the automatic reset operation of the door body 26.

[0056] The deep groove ball bearing 10 undergoes rolling friction within the helical groove 61, resulting in less wear between components and reduced noise during operation.

[0057] Here, the pitch, shape, and direction of the spiral groove 61 are not limited, as long as it can cooperate with the deep groove ball bearing 10 to realize the rotation operation of the door hinge assembly 6. It can be flexibly designed according to the actual operation.

[0058] The power-assist component is rotatably connected to the door hinge assembly 6. When the door 26 is open, the power-assist component pushes forward to accelerate the opening of the door 26, while the supplementary force component assists in pushing the door 26 to continue rotating into place. Simultaneously, it allows the compression component 2 to achieve greater compression, resulting in a greater automatic reset capability. Only a small force is needed to open the door 26 when people pass through, saving time and effort. When the door 26 is closed, the supplementary force component does not operate. The power-assist component provides a reverse pushing force, and the compression force generated by the compression component 2 achieves the automatic reset of the door 26, slowing down the closing speed to avoid excessive noise and maintaining the door 26 in a reliable closed state. The power-assist component and supplementary force component make opening and closing the door convenient and effortless, improving the user experience.

[0059] The supplementary force assembly is retractably mounted on one side of the door 26. When the door 26 is opened to a certain angle, the force of the supplementary force assembly and the rotational inertia of the door 26 itself cannot continue to push the door 26 open at a fast speed. At this time, the supplementary force assembly can extend to assist the door 26 in continuing to open to the correct position and maintain the door 26 in the open state, allowing personnel to pass through smoothly and safely. With the assistance of the power-assisting component and the supplementary force of the supplementary force assembly, the force required to push the door is reduced. After personnel have passed through the door 26, the supplementary force assembly can retract so that the door 26 automatically returns to the closed state by its own compression, ensuring that personnel have completely passed through before automatically returning to the closed state, thus ensuring the overall safety and reliability of the operation.

[0060] The aforementioned automatic reset door includes a door hinge assembly 6, a compression component 2, a rotating assembly, an assisting assembly, and a supplementary assembly. The door hinge assembly 6 is connected to the door body 26, and the door body 26 opens and closes as the door hinge assembly 6 rotates. The compression component 2 is fitted onto the outside of the door hinge assembly 6. The rotating assembly includes a sliding block 4 located on top of the compression component 2 and a deep groove ball bearing 10. The deep groove ball bearing 10 is connected to the sliding block 4 and located within a spiral groove 61. When the sliding block 4 is lifted upwards by the compression component 2, the deep groove ball bearing 10 and the spiral groove 61 on the door hinge assembly 6 form a spiral pair, causing the deep groove ball bearing 10 to roll within the spiral groove 61, thus pushing the door hinge assembly 6 to rotate along its own axis, achieving automatic reset of the door body 26. This rolling connection reduces wear and improves the service life of the components. The assisting assembly is rotatably connected to the door hinge assembly 6. When the door body 26 is opened, the assisting assembly is used to push forward to compress the compression component 2 and accelerate the opening of the door body 26. The supplementary assembly assists the assisting assembly to further facilitate the opening of the door body 26. The supplementary force ensures that the door 26 is fully opened. The combined action of the assist component and the supplementary force component reduces the force required to push the door, improving the user experience. When the door 26 is closed, the combined action of the assist component and the supplementary force component allows the door 26 to automatically reset due to the compressive force exerted on the compression component 2 when the door was opened. The assist component can push in the opposite direction to slow the closing speed of the door 26, ensuring safe and smooth passage for personnel. The supplementary force component, retractably located on one side of the door 26, extends to assist the assist component when the force of the assist component and the rotational inertia of the door 26 are insufficient to continue opening the door 26 quickly enough. It maintains the open position of the door 26, allowing personnel to pass smoothly. When the door 26 needs to be closed after personnel have passed, the supplementary force component retracts to ensure that the door 26 closes smoothly under the combined action of the compressive force of the compression component 2 and the assist component, ensuring safe and reliable passage for personnel. The aforementioned automatic reset door is easy and convenient to open and close, ensuring the smooth and safe passage of personnel, guaranteeing the overall safety and reliability of the operation, and enhancing the personnel's experience.

[0061] Based on the above embodiment, the bottom of the door hinge assembly 6 is provided with a base 1, and the sliding block 4 is slidably connected to a plurality of sliding rods 3 provided on the base 1.

[0062] Please refer to Figures 1 to 3 The base 1 provides support for the sliding block 4 through the sliding rod 3. When the compression force of the compression member 2 pushes the sliding block 4 to move, the sliding rod 3 can provide guidance to ensure the accuracy of the movement of the sliding block 4 to drive the deep groove ball bearing 10 to rotate.

[0063] In this embodiment, the number and structure of the sliding rods 3 are not limited, as long as they meet the usage requirements.

[0064] Please refer to Figure 1 , Figure 3 The base 1 is located at the bottom of the door hinge assembly 6 and a first bearing 8 is provided between the two. The base 1 can be fixed to the bottom surface or other equipment to support the door hinge assembly 6.

[0065] In addition, a wear-resistant plate 11 is provided between the base 1 and the compression component 2 to ensure the reliability of the compression component 2 during reciprocating operation, avoid component wear, and ensure its service life.

[0066] Please refer to Figure 3 The base 1 is also provided with a fixing plate 7. The fixing plate 7, the first bearing 8, and the door hinge assembly 6 are connected by countersunk bolts. The three can rotate together to fix the door hinge assembly 6 axially and ensure the reliability of the door hinge assembly 6 in opening the door 26.

[0067] Based on any of the above embodiments, a horizontally arranged support shaft 9 is fixed on the sliding block 4, and a deep groove ball bearing 10 is disposed on the support shaft 9 and can roll in the spiral groove 61.

[0068] Please refer to Figure 3 The support shaft 9 and the sliding block 4 are integrated. The deep groove ball bearing 10 is sleeved on the support shaft 9, that is, the deep groove ball bearing 10 is rotatably connected to the support shaft 9. When the compression member 2 lifts the sliding block 4 and moves upward, the deep groove ball bearing 10 can roll in the spiral groove 61 to realize the rotation of the door shaft.

[0069] By using the deep groove ball bearing 10, wear on the door hinge assembly 6 can be reduced, friction between the two can be decreased, noise can be reduced, and the user experience can be improved.

[0070] Based on any of the above embodiments, the assistive component includes:

[0071] The power steering plate 15 is connected to the door hinge assembly 6 via connector 21;

[0072] The tension spring 13 is partially wound around the circumference of the booster plate 15;

[0073] Adjusting screw 16 is connected to base 1, one end of tension spring 13 is connected to assist plate 15, and the other end of tension spring 13 is connected to adjusting screw 16.

[0074] Please refer to Figure 1 , Figures 4 to 7 , Figure 9 The power assist components include a power assist disc 15, a tension spring 13, and an adjusting screw 16.

[0075] The power assist plate 15 is connected to the door hinge assembly 6 via the connector 21. The force of the power assist plate 15 can be transmitted to the door hinge assembly 6 through the connector 21 to assist in the opening and closing of the door 26.

[0076] The specific structure of the connector 21 is not limited, as long as it enables the connection between the power assist plate 15 and the door hinge assembly 6. It can be plate type, rod type or other. Taking a preferred embodiment as an example, the connector 21 is a rod with pins 19 at both ends, which respectively realizes the rotational connection between the connector 21 and the power assist plate 15 and the rotational connection between the connector 21 and the door hinge assembly 6.

[0077] Optionally, a wear-resistant shim 20 can be provided on the outside of the pin 19 to provide a certain degree of wear resistance and ensure the service life of the component. The specific material of the wear-resistant shim 20 is not limited here, as long as it has good wear resistance.

[0078] The tension spring 13 is partially wound around the circumference of the booster plate 15, with one end connected to the booster plate 15 and the other end connected to the base 1 via an adjusting screw 16. Please refer to the following for details. Figures 4 to 7 The tension spring 13 has hooks at both ends. One hook is tightened onto the assist plate 15 by the fastening screw 14, and the other hook is hung on the adjusting screw 16. The tension generated by the tension spring 13 causes the assist plate 15 to rotate clockwise, which is transmitted to the door hinge assembly 6 through the connector 21 to provide door opening assistance, slow reset, and auxiliary closing retention.

[0079] Based on any of the above embodiments, the adjusting screw 16 is provided on the connecting plate 12 and has an adjusting part 161. The adjusting part 161 can extend out of the connecting plate 12 by different lengths to adjust the tension of the tension spring 13.

[0080] Please refer to Figure 2 The adjusting screw 16 is connected to the base 1 via the connecting plate 12. By changing the length of the adjusting part 161 extending out of the connecting plate 12, the tension of the tension spring 13 can be adjusted. The adjustment can be made appropriately according to the actual situation to ensure a suitable free length of the tension spring 13 and improve its service life.

[0081] Specifically, the adjusting screw 16 is connected to the connecting plate 12 via the fixing plate. The adjusting screw 16 is set horizontally, and the tension of the tension spring 13 is adjusted according to the length of the adjusting screw 16 passing horizontally through the fixing plate.

[0082] Based on any of the above embodiments, the base 1 is connected to the limiting post 18 via the connecting plate 12, and the assist plate 15 is also provided with a stop post 17. The limiting post 18 is located on the rotation path of the stop post 17 to block its rotation.

[0083] Please refer to Figure 1 , Figures 4 to 7 , Figure 9The limiting post 18 is fixed on the connecting plate 12, and the auxiliary plate 15 is fixed with a stop post 17. The limiting post 18 is set on the rotation path of the stop post 17 to block its rotation. Specifically, the setting of the limiting post 18 prevents the auxiliary plate 15 from turning clockwise when the door 26 is opened to about 90°, thus ensuring the safety and reliability of opening and closing the door.

[0084] The limiting post 18 is just one specific implementation form, but it can also be other forms, such as a limiting plate, a limiting ring, a limiting platform, etc., as long as it can cooperate with the stop post 17 to limit the excessive rotation of the power assist plate 15.

[0085] Based on any of the above embodiments, the reinforcement component includes:

[0086] The sensor 27 is disposed on the door hinge assembly 6, and either the door hinge assembly 6 or the sensor 27 is provided with an elongated slot for connecting the two.

[0087] The proximity sensor 30 is connected to the base 1 and is signal-connected to the sensing element 27;

[0088] Electromagnet 31 is connected to proximity sensor 30. When proximity sensor 30 receives information from sensing plate 27 and transmits it to electromagnet 31, the force-repairing block 33 on electromagnet 31 can extend to provide additional force and push door 26 to continue rotating to the open state and maintain it.

[0089] The stop block base 28 is connected to the push rod of the electromagnet 31. The force-reinforcing stop block 33 is provided on the stop block base 28. Either the stop block base 28 or the force-reinforcing stop block 33 is provided with a long slot for connecting the two.

[0090] A support rod 34 is connected to the door hinge assembly 6, and a roller 35 is rotatably connected to the support rod 34.

[0091] The supplementary rod 36 is provided on the supplementary stop block 33. The roller 35 rolls in contact with the supplementary rod 36. The supplementary rod 36 is inclined so that when the push rod of the electromagnet 31 is extended, the supplementary rod 36 can press the rolling body on the door hinge assembly 6 to make the door body 26 rotate.

[0092] An infrared beam sensor 32 is located on one side of the door 26 and is used to detect personnel passage information. When the infrared beam sensor 32 transmits personnel passage information to the electromagnet 31, the force-reducing block 33 retracts to reset the door 26 to the closed state.

[0093] Please refer to Figure 1 , Figure 2 , Figures 4 to 7 , Figure 9 The force-reinforcing assembly includes a sensing plate 27, a stop base 28, a proximity sensor 30, an electromagnet 31, an infrared beam sensor 32, a force-reinforcing stop 33, a support rod 34, a roller 35, and a force-reinforcing rod 36.

[0094] Either the sensing element 27 or the door hinge assembly 6 is provided with an elongated slot for connecting the two, that is, the length of the sensing element 27 extending relative to the door hinge assembly 6 is adjustable to provide a signal to the proximity sensor 30 at the required angle, making the operation more flexible.

[0095] The sensor 27 rotates when the door hinge assembly 6 rotates. The proximity sensor 30 is connected to the base 1 via the bending plate 29. Specifically, the base 1 is connected to the connecting plate 12, which is connected to the bending plate 29.

[0096] The proximity sensor 30 is connected to the sensing plate 27. When the sensing plate 27 rotates into the area that the proximity sensor 30 can detect, the door 26 is in the open state (the opening angle is about 85°).

[0097] Electromagnet 31 is also mounted on connecting plate 12 and is connected to proximity sensor 30. When proximity sensor 30 receives information from sensing plate 27 and transmits it to electromagnet 31, supplementary force block 33 on electromagnet 31 can extend to provide supplementary force and push door 26 to continue rotating to the open state and maintain it, so as to facilitate the safe passage of personnel.

[0098] The stop base 28 is connected to the push rod of the electromagnet 31, and the supplementary stop 33 is provided on the stop base 28. The push rod of the electromagnet 31 operates to push the extension or retraction of the supplementary stop 33.

[0099] Either the stop block base 28 or the supplementary stop block 33 is provided with a long slot for connecting the two, that is, the two are adjustable. The position of the supplementary stop block 33 can be flexibly adjusted according to the actual operation, making it more applicable.

[0100] The support rod 34 is connected to the door hinge assembly 6, and a reliable connection between the support rod 34 and the door hinge assembly 6 can be achieved with the help of fasteners. A roller 35 is rotatably connected to the support rod 34, and the roller 35 rolls in contact with the supplementary rod 36 on the supplementary stop block 33. When the push rod of the electromagnet 31 extends, the supplementary stop block 33 extends to provide supplementary force, so as to push the supplementary rod 36 to press the rolling body on the door hinge assembly, thereby rotating the door body 26 and realizing the smooth opening of the door body 26.

[0101] In addition, the supplementary rod 36 is inclined. When the push rod of the electromagnet 31 begins to extend, the supplementary rod 36 contacts the rolling element on the door hinge assembly, and the door 26 continues to open. When the push rod of the electromagnet 31 extends to the end, the door 26 is fully open and remains open, thus achieving a reliable auxiliary function when the door 26 is opened.

[0102] Furthermore, an infrared beam sensor 32 is installed on one side of the door 26. The specific arrangement and number of sensors are not limited, as long as they meet the requirements for detecting personnel passage. The infrared beam sensor 32 transmits personnel passage information to the electromagnet 31. If personnel have passed through, a signal is sent to control the supplementary stop block 33 on the electromagnet 31 to retract, allowing the door 26 to automatically return to the closed state through the cooperation of the compression member 2 and the tension spring 13, without manual intervention. If the infrared beam sensor 32 detects that personnel have not passed through, a signal is sent to control the supplementary stop block 33 on the electromagnet 31 to remain extended to prevent the door 26 from rotating counterclockwise, thus keeping the door 26 open.

[0103] Having described the specific composition of the assist component and the supplementary component, the following section will detail their specific functions in actual operation:

[0104] Please refer to Figure 4 , Figure 4 This is a top view of the automatic reset door provided by the present invention in its initial state. In the initial state, the compression member 2 is pre-compressed, and the resulting elastic force can push the sliding block 4 to move along the sliding rod 3 in the vertical direction, so that the deep groove ball bearing 10 on the sliding block 4 forms a rotating pair with the spiral groove 61. The door hinge assembly 6 rotates counterclockwise through the rolling of the deep groove ball bearing 10 in the spiral groove 61. During this process, the tension spring 13 has a certain amount of tension. By winding around the auxiliary disk 15, it transmits the force to the door hinge assembly 6 through the connecting member 21, generating a force that causes the door hinge assembly 6 to rotate counterclockwise. The counterclockwise force provided by both the tension spring 13 and the compression member 2 keeps the door 26 in the closed state. It should be noted that the counterclockwise rotation here is... Figure 4 The counterclockwise direction is in the middle, and at this time the force-replenishing block 33 is in the retracted state.

[0105] Please continue to refer to this. Figure 5 , Figure 5 This is a top view of the automatic reset door provided by the present invention when rotated to 36°. When the door body 26 rotates from its initial state of 0° to 36°, it is manually pushed. The 36° angle here is merely a result of common testing and is not a limitation. When the door body 26 is pushed open more than 36°, it exceeds its extreme position (see α in the figure). In this state, the tension spring 13 is at its maximum tension. The tension spring 13 acts on the door hinge assembly 6 through the connecting piece 21 to generate a driving force that causes the door body 26 to rotate clockwise, thus accelerating the opening speed of the door body 26 and saving time and effort. It should be noted that clockwise here means... Figure 5 In the clockwise direction, during the process of accelerating the opening of the door 26, the force transmitted from the tension spring 13 to the door hinge assembly 6 is greater than the force of the compression member 2, so that the opening of the door 26 can be effectively accelerated.

[0106] Please continue to refer to this. Figure 6 , Figure 6 This is a top view of the automatic reset door provided by the present invention when rotated to 75°. As the door body 26 gradually increases from an opening angle of 36°, the tension of the tension spring 13 gradually decreases, while the compression of the compression member 2 gradually increases. When the door opens beyond 75°, the auxiliary thrust of the tension spring 13 weakens, and the opening speed of the door body 26 slows down (again, 75° here is only a test value and not a limiting angle). When the door body 26 opens beyond 75°, the force of the compression member 2 acting on the door hinge assembly 6 is greater than the force generated by the tension spring 13. However, since the door hinge assembly 6 has the inertia to continue opening the door body 26 by rotating clockwise, this inertia can overcome the difference in driving force between the compression member 2 and the tension spring 13, so that the door body 26 gradually opens from 75° to 85°.

[0107] Figure 7 This is a top view of the automatic reset door provided by the present invention when it is rotated to 85°. In this state, the auxiliary thrust of the tension spring 13 and the clockwise rotational inertia of the door body 26 cannot make the door body 26 continue to rotate at a certain speed to open to 90°. Therefore, it is designed that when the door body 26 is opened to 85° (or a certain range, which can be flexibly designed and implemented), the proximity sensor 30 can sense the information of the sensing plate 27. At this time, the supplementary stop block 33 on the control electromagnet 31 extends to push the door body 26 to open to 90° and hold it, so that people can pass safely.

[0108] The force-reducing block 33 may experience some wear during its extension or retraction process. The force-reducing rod 36 on the force-reducing block 33 and the roller body on the door hinge assembly 6 preferably experience rolling friction.

[0109] Figure 8 This is a schematic diagram of the automatic reset door provided by the present invention, in which the supplementary stop block begins to extend when the door is rotated to 85° (this is not a limited angle, and the size of the corresponding mating parts can be adjusted, and it can be designed to be 80° or even less than 80°). The supplementary stop block 33 on the electromagnet 31 extends, and the supplementary rod 36 rolls in contact with the roller 35. During the extension of the push rod of the electromagnet 31, the door body 26 is gradually pushed to continue rotating to 90° and remains in the open state.

[0110] Please continue to refer to this. Figure 9 , Figure 9This is a top view of the automatic reset door provided by the present invention when rotated to 90°. Several pairs of infrared beam sensors 32 are installed on one side of the door 26. After detecting the passage of a person, the electromagnet 31 controls the force-reducing block 33 to retract. At this time, the compression component 2 has the maximum compression amount, which helps the door 26 to reset. During the reset process, the tension spring 13 generates reverse resistance to slow down the closing speed of the door 26, allowing the door 26 to rotate at a relatively safe speed. When the door is reset to less than 75°, although the resistance generated by the tension spring 13 exceeds the counterclockwise reset force of the compression component 2 (i.e., the compression spring), the supplementary force provided by the force-reducing component causes the increased compression amount of the compression component 2 (i.e., the compression spring) to combine with the rotational inertia of the door 26 itself, causing the door 26 to continue to rotate counterclockwise at a slower, safer speed. Through the extreme position (i.e., the position with a rotation angle of 36° mentioned above), under the action of the counterclockwise torque generated by the compression component 2 and the tension spring 13, the door 26 gradually rotates to 0° at a suitable speed, i.e., the original closed state. Here, counterclockwise is... Figure 9 The counterclockwise direction.

[0111] It should be noted that during the automatic reset of the door, after the door 26 rotates past the extreme position (i.e., the position with a rotation angle of 36°) by relying on the compression member 2 and its own inertia, the door 26 rotates counterclockwise under the combined action of the compression member 2 and the tension spring 13. During the initial stage of automatic reset (i.e., the process between the rotation angle of 90° and 36°), with the reverse pushing force already provided by the assist component, the rotation speed of the door 26 is already relatively low after rotating past the extreme position, and the force generated by the compression member 2 and the tension spring 13 is small and insufficient to produce a high speed. Therefore, during the process from the extreme position to complete closure, the closing speed of the door 26 is relatively slow, which can ensure the safe closure of the door 26.

[0112] Figure 10 This is a schematic diagram of the auxiliary stop block fully extending when the automatic reset door provided by the present invention rotates to 90°. At this time, the auxiliary stop block 33 on the electromagnet 31 is fully extended and remains fully extended to prevent the door body 26 from resetting. At this time, the door body 26 is in a fully open state and remains so.

[0113] Based on any of the above embodiments, a limiting block 22 is provided on the outer periphery of the door hinge assembly 6, and a limiting adjustment screw 24 is connected to the limiting block 22. The limiting adjustment screw 24 can pass through the limiting block 22 to adjust the distance between it and the limiting part 62 on the door hinge assembly 6.

[0114] Please refer to Figure 1 , Figure 4 , Figure 9The rotation direction and range of the door body 26 are limited by the setting of the limiting block 22 and the limiting adjustment screw 24. Specifically, the limiting block 22 is set on the outer periphery of the door hinge assembly 6, and the limiting adjustment screw 24 can pass through the limiting block 22 to adjust the distance between it and the limiting part 62 on the door hinge assembly 6.

[0115] Taking a specific configuration as an example, the limiting block 22 is arranged at 270° around the outer periphery of the door hinge assembly 6. Two sets of limiting adjustment screws 24 are respectively connected to the two ends of the limiting block 22. By setting the limiting block 22, the rotation angle of the door body 26 is limited to between 0° and 90°. The two sets of limiting adjustment screws 24 pass through the limiting block 22 to adjust the distance between the limiting adjustment screws and the limiting part 62, so as to achieve a moderate adjustment of the rotation range of the door body 26. For example, the limiting adjustment screw 24 at the 0° rotation position can be moderately adjusted to 0°±3° when the rotation angle of the door body 26 is 0°. The limiting adjustment screw 24 at the 90° rotation position can moderately adjust the 90° rotation angle to 90°±3° (which can be used in conjunction with adjusting the position of the force-reinforcing block 33).

[0116] Based on any of the above embodiments, the top of the door hinge assembly 6 is also rotatably connected to an upper support cover 23, which is used to connect to an external fixed device.

[0117] Please refer to Figure 1 The top of the door hinge assembly 6 is connected to an upper support cover 23 via a bearing. The upper support cover 23 is used to connect to external fixed equipment, such as a wall, to provide reliable support for the rotation of the door hinge assembly 6.

[0118] Please refer to Figure 11 In actual application of the automatic reset door, both the upper support cover 23 and the base 1 are provided with connection holes, and the automatic reset door can be installed and used by fasteners and connectors in conjunction with the connection holes.

[0119] Please refer to Figure 12 , Figure 13Another key aspect of the rapid opening of the door 26 with the assistance component is that after the door 26 has passed its extreme position, the line connecting the center of the assistance disk 15 to the hinge point of the connector 21 (the BD line) is designed to have an angle close to 90° with the horizontal direction. Meanwhile, the line connecting the center point of the door hinge assembly 6 to the hinge point of the connector 21 (the AC line) is designed to have a smaller angle with the horizontal direction. This allows the assistance disk 15 to rotate a smaller angle, while the door hinge assembly 6 can rotate a larger angle. For example, if the tension spring 13 is at its maximum tension at 36°, the smaller rotation angle of the assistance disk 15 allows the tension spring 13 to remain under a larger tension state during this process, driving the door hinge assembly 6 to quickly rotate and open to a larger angle. This also reduces the maximum tension of the tension spring 13, extending its lifespan. It should be noted that this is only an explanation of the principle of this solution and is not the only solution. The same principle can be achieved by changing the spacing of the frame (the position or distance between points A and B in the diagram), changing the length of the connecting rods (the AC and BD lines), etc.

[0120] Combination Figure 5 , Figure 6 When the door body 26 rotates from 36° to 75°, the angle through which the door body 26 rotates is 39°, and the angle through which the power assist plate 15 rotates is 27°. That is, the angle through which the power assist plate 15 rotates is less than the angle through which the door body 26 rotates.

[0121] Based on any of the above embodiments, four sliding rods 3 are evenly distributed around the base 1, and an oil-free bushing 5 is provided at the connection between any sliding rod 3 and the sliding block 4.

[0122] Please refer to Figure 1 , Figures 4 to 7 , Figure 9 Each sliding rod 3 and sliding block 4 is provided with an oil-free bushing 5. The four corners of the sliding block 4 are equipped with four oil-free bushings 5, which together with the sliding rod 3 fixed on the base 1 form four sets of moving pairs to ensure smooth sliding between the sliding block 4 and the sliding rod 3. The oil-free bushing 5 has a self-lubricating function, which can avoid damage to the parts and ensure the service life of the parts.

[0123] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0124] The above provides a detailed description of an automatic reset door provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automatic reset door, characterized in that, include: The door hinge assembly (6) is connected to the door body (26) and has a spiral groove (61) in its circumferential direction. The compression component (2) is sleeved on the outside of the door hinge assembly (6); The rotating assembly includes a sliding block (4) disposed on the top of the compression member (2) and a deep groove ball bearing (10). The deep groove ball bearing (10) is connected to the sliding block (4) and disposed in the spiral groove (61). When the sliding block (4) is lifted and moved upward by the compression member (2), the deep groove ball bearing (10) can roll in the spiral groove (61) to push the door hinge assembly (6) to rotate along its own axis to realize the automatic reset of the door body (26). The assist component is rotatably connected to the door hinge assembly (6) and is used to push forward to compress the compression member (2) and accelerate the opening of the door body (26) or push backward to slowly close the door body (26). The force-reinforcing component is telescopically disposed on one side of the door body (26) and is used to extend to cooperate with the assist component to provide additional force to rotate the door body (26) to the open state and maintain it, or to retract to reset the door body (26) to the closed state; The bottom of the door hinge assembly (6) is provided with a base (1), and the sliding block (4) is slidably connected to a plurality of sliding rods (3) provided on the base (1); A horizontally arranged support shaft (9) is fixed on the sliding block (4), and the deep groove ball bearing (10) is disposed on the support shaft (9) and can roll in the spiral groove (61); The assist component includes: The power steering plate (15) is connected to the door hinge assembly (6) via a connector (21); A tension spring (13) is partially wound around the circumference of the booster disc (15); An adjusting screw (16) is connected to the base (1), one end of the tension spring (13) is connected to the booster plate (15), and the other end of the tension spring (13) is connected to the adjusting screw (16). The base (1) is connected to a connecting plate (12), and the adjusting screw (16) is provided on the connecting plate (12) and has an adjusting part (161). The adjusting part (161) can extend out of the connecting plate (12) by different lengths to adjust the tension of the tension spring (13). The base (1) is connected to the limiting post (18) via the connecting plate (12), and the assist plate (15) is also provided with a stop post (17). The limiting post (18) is located on the rotation path of the stop post (17) to block its rotation.

2. The automatic reset door according to claim 1, characterized in that, The reinforcement component includes: A sensor plate (27) is disposed on the door hinge assembly (6), and either the door hinge assembly (6) or the sensor plate (27) is provided with an elongated slot for connecting the two. A proximity sensor (30) is connected to the base (1) and signal-connected to the sensing plate (27); An electromagnet (31) is connected to the proximity sensor (30). When the proximity sensor (30) receives the information from the sensing plate (27) and transmits it to the electromagnet (31), the supplementary force block (33) on the electromagnet (31) can extend to provide supplementary force and push the door (26) to continue rotating to the open state and maintain it. The stop base (28) is connected to the push rod of the electromagnet (31), and the force-reinforcing stop (33) is provided on the stop base (28). Either the stop base (28) or the force-reinforcing stop (33) is provided with a long slot for connecting the two. A support rod (34) is connected to the door hinge assembly (6), and a roller (35) is rotatably connected to the support rod (34). A supplementary rod (36) is provided on the supplementary stop block (33). The roller (35) rolls in contact with the supplementary rod (36). The supplementary rod (36) is inclined so that when the push rod of the electromagnet (31) extends, the supplementary rod (36) can press the rolling body on the door hinge assembly (6) to make the door body (26) rotate. An infrared beam sensor (32) is located on one side of the door (26) and is used to detect personnel passage information. When the infrared beam sensor (32) transmits personnel passage information to the electromagnet (31), the force-reducing block (33) retracts to reset the door (26) to the closed state.

3. The automatic reset door according to claim 2, characterized in that, The door hinge assembly (6) is provided with a limiting block (22) on its outer periphery. A limiting adjustment screw (24) is connected to the limiting block (22). The limiting adjustment screw (24) can pass through the limiting block (22) to adjust the distance between it and the limiting part (62) on the door hinge assembly (6).

4. The automatic reset door according to claim 3, characterized in that, The top of the door hinge assembly (6) is also rotatably connected to an upper support cover (23), which is used to connect to an external fixed device.

5. The automatic reset door according to claim 4, characterized in that, The four sliding rods (3) are evenly distributed around the base (1), and an oil-free bushing (5) is provided at the connection between any of the sliding rods (3) and the sliding block (4).

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