Protective door with anti-pinch function

Abstract

The protective door with the anti-pinch function comprises a door leaf, a door frame and an anti-pinch device, a hinged side and a door opening side are arranged between the door leaf and the door frame, and a safety position is arranged on the door opening side of the door leaf and the door frame; the anti-pinch device is provided with a power supply module, a main control module, a touch control module which is electrically connected with the main control module and is arranged on the door opening side, a position sensor and a positioning module; the touch control module obtains an anti-pinch signal when a hand touches the door opening side, the position sensor obtains a position signal when the door leaf reaches the safety position, and the main control module sends an instruction to control the positioning module to lock the door leaf at the safety position after receiving the anti-pinch signal and the position signal. Therefore, the problem that torque generated by closing the door leaf is difficult to confront is solved, the door leaf is locked at the safety position through the anti-pinch device, the problem that when the hand is still on the door opening side, the door leaf continues to be slowly closed, and the hand is pinched is solved, and the purpose of preventing the hand from being pinched is fundamentally achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building design, in particular to a protective door with an anti-pinch function. Background Art

[0002] In daily life, getting your finger pinched when closing a door is a common occurrence. The main causes of this are often due to improper door design, improper usage habits, and structural defects. For example, traditional hinged doors utilize a square, right-angled surface connected by external hinges. This irrational design and structure present irreversible safety flaws. When opening and closing a door, using the right hand for a left-hand door or the left hand for a right-hand door can easily lead to finger pinching. Furthermore, if the push-pull handle is too close to the door frame, users can easily get their fingers pinched if they extend their fingers too far when closing the door.

[0003] In response to the problem of hand pinching in doors, relevant anti-hand pinching wooden doors have been introduced in the prior art, such as the Chinese invention patent with publication number CN107620553A and patent name "Anti-hand pinching wooden door". The technical solution disclosed in the patent is that the first door sill is connected to the first frame via a hinge; at least two electromagnets are provided on the end face of the first frame opposite to the first door sill, and a magnet opposite to the electromagnet is provided on the end face of the first door sill opposite to the first frame; when the door leaf is close to the closed position, the contact piece of the upper plate contacts the contact point of the third frame, so that the sensor is energized and in working state; when the sensor detects that there is a foreign object in the second frame when closing the door, the sensor sends a signal to the control circuit; the control circuit energizes the electromagnet after receiving the electrical signal from the sensor; the electromagnet on the door frame and the magnet on the door leaf repel each other, forcing the rotation speed of the door leaf to decrease, and then preventing the wooden door from pinching the hand by reducing the closing speed of the door leaf.

[0004] In addition, photoelectric sensors are set at the upper and lower positions of the door opening side. The photoelectric sensors emit light beams to detect whether there are objects between the door leaf and the door opening side of the door frame. If the object being detected blocks the light beam of the photoelectric sensor, the photoelectric sensor will feedback a signal to the controller, causing the controller to control the start of the anti-pinch operation.

[0005] Although the prior art can reduce the closing speed of the door leaf and achieve the basic purpose of preventing hand pinching by providing mutually repelling magnets on the hinge connection side between the door frame and the door leaf, the following defects still exist:

[0006] 1. Because the lever arm on the door leaf's opening side is much larger than the lever arm on its hinged side, the required counterforce on the hinged side to counteract the torque generated by closing the door leaf is much greater than the counterforce required on the door opening side. Therefore, mutually repelling magnets are installed on the hinged side of the door leaf and the door frame. However, the repulsive force of the magnets (equivalent to the counterforce) is usually unable to resist the torque of closing the door leaf, and the effect of slowing down the closing speed of the door leaf is not ideal.

[0007] 2. In addition, the repulsive effect of the magnets between the door leaf and the door frame can only reduce the speed of closing the door leaf to a certain extent. If the hand is still between the door leaf and the door frame, the hand will still be pinched as the door leaf closes. Moreover, it cannot solve the problems of artificial blocking of the door and the influence of natural wind, so it cannot fundamentally solve the problem of hand pinching.

[0008] 3. In the prior art, when a photoelectric sensor is installed on the door opening side, problems such as the difficulty of laying circuits and opening holes in the ground to install the sensor equipment are encountered. In addition, the sensor equipment installed on the ground is easily contaminated by foreign matter such as dust and is triggered by mistake. Utility Model Content

[0009] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a protective door with an anti-pinch function.

[0010] The purpose of the utility model is achieved by the following technical solution: a protective door with an anti-pinch function, comprising a door leaf, a door frame and an anti-pinch device, wherein a door opening side is provided between the door leaf and the door frame, and a safety position is provided on the door opening side;

[0011] The anti-pinch device comprises a power module, a main control module, a touch module electrically connected to the main control module and arranged on the door opening side, a position sensor, and a positioning module;

[0012] The touch module obtains the anti-pinch signal when the hand touches the door opening side, and the position sensor obtains the position signal when the door leaf reaches the safe position. After receiving the anti-pinch signal and the position signal, the main control module sends an instruction to control the positioning module to lock the door leaf in the safe position.

[0013] Furthermore, the door opening side of the door leaf includes an upper protrusion and a door opening stile, and the door opening side of the door frame includes an upper frame and a door opening vertical side frame. The upper protrusion is opened and closed correspondingly to the upper frame, and the door opening stile is opened and closed correspondingly to the door opening vertical side frame.

[0014] Furthermore, the positioning module comprises an electromagnetic component and a first metal component. When the electromagnetic component is arranged on the upper frame, the first metal component is correspondingly arranged on the upper head.

[0015] Or when the electromagnetic component is arranged on the vertical frame of the door opening, the first metal component is correspondingly arranged on the door opening stile;

[0016] The electromagnetic component magnetically attracts the door leaf to the first metal component in the safety position and locks the door leaf in the safety position.

[0017] Furthermore, when the door leaf reaches the safety position, the door stile is close to a distance of 23-30 mm from the vertical door frame.

[0018] Furthermore, the main control module and the touch module are electrically connected to the data processing module, and the touch module has a second metal part and a third metal part. The second metal part is arranged on the door opening stile of the door leaf, and the third metal part is arranged on the door opening vertical frame of the door frame, and the second metal part and the third metal part are respectively extended along the vertical direction of the door leaf and the door frame.

[0019] Furthermore, when the capacitance value of the second metal member or the third metal member exceeds the range of the initial capacitance value pre-stored in the data processing module, the touch control module feeds back a touch signal in the anti-pinch signal, and the main control module sends an instruction based on the touch signal to control the position sensor to detect the position signal of the door leaf in real time;

[0020] When the main control module receives the touch signal and the position signal at the same time, it sends an instruction to control the electrical connection between the positioning module and the power module to lock the door leaf in a safe position.

[0021] Furthermore, when the capacitance value of the second metal member or the third metal member is within the range of the initial capacitance value, the main control module sends an instruction to control the disconnection of the electrical connection between the power module and the positioning module.

[0022] Furthermore, when the resistance value between the second metal member and the third metal member exceeds the range of the initial resistance value pre-stored in the data processing module, the touch module feeds back a hand-pinching signal in the anti-pinching signal, and the main control module sends an instruction based on the hand-pinching signal to control the position sensor to detect the position signal of the door leaf in real time;

[0023] When the main control module receives the hand clamping signal and the position signal at the same time, it sends an instruction to control the electrical connection between the positioning module and the power module to lock the door leaf in a safe position.

[0024] Furthermore, when the resistance value between the second metal member and the third metal member is within the range of the initial resistance value, the main control module sends an instruction to control the cutting off of the electrical connection between the power module and the positioning module.

[0025] Furthermore, the position sensor has a detection head and a detection member. When the detection head is arranged on the upper frame, the detection member is correspondingly arranged on the upper head.

[0026] Or when the detection head is arranged on the vertical frame of the door opening, the detection member is correspondingly arranged on the door opening stile;

[0027] The detection head detects the detection member on the door leaf that has reached the safe position and feeds back the position signal to the main control module.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] (1) The protective door provided in the embodiment of the present application is configured such that the touch module, position sensor, and positioning module of the anti-pinch device are arranged on the door opening side, thereby sensing that a hand touches the door leaf and the door frame on the door opening side, and when the door leaf reaches a safe position, an anti-pinch signal and a position signal are fed back to the main control module, so that the main control module sends an instruction to control the positioning module to lock the door leaf in the safe position, thereby preventing the door leaf from pinching the user's hand as it continues to close.

[0030] Compared with the previous implementation method of setting mutually repelling magnets on the hinged side of the door leaf and the door frame to slow down the closing speed of the door leaf, the embodiment of the present application sets the anti-pinch device on the door opening side, overcoming the problem of difficulty in resisting the torque generated by closing the door leaf, and can lock the door leaf in a safe position. As long as the hand is still between the door leaf and the door frame, the door leaf will not close, thereby preventing the problem of pinching the hand when the door leaf continues to close slowly, thereby fundamentally achieving the purpose of preventing hand pinching.

[0031] (2) Since the lever arm on the door opening side of the door leaf and the door frame is much larger than the lever arm on the hinged side, the electromagnetic component of the positioning module is set on the door opening side of the door frame and the first metal component is set on the door opening side of the door leaf, and then the magnetic attraction of the electromagnetic component to the first metal component is used to counteract the torque generated when the door leaf is closed, thereby overcoming the problem that the door leaf continues to close and pinches the hand due to the small lever arm when the magnet is set on the hinged side; and the door leaf is locked in a safe position by the electromagnetic component magnetically attracting the first metal component, which is more effective than the previous use of the repulsive force of the magnet to counteract the torque of the door leaf, thereby improving the anti-pinch effect.

[0032] (3) By extending the second metal part and the third metal part of the touch module along the vertical direction of the door leaf and the door frame respectively, the sensing area between the door leaf and the door frame for sensing hand touch is expanded, which is suitable for users of different heights. As long as the hand touches the second metal part and the third metal part, the change of the capacitance value can be triggered, so that the touch module feeds back the touch signal to the main control module; and by setting up this contact touch module, the problem of misoperation caused by other insulators such as clothes touching the second metal part and the third metal part can be avoided, thereby improving the accuracy of hand touch detection.

[0033] (4) The main control module detects the change in the resistance value between the second metal part and the third metal part, and then determines whether a hand pinching situation occurs. The main control module sends a command to turn on the power of the positioning module through the hand pinching signal, and locks the door leaf in a safe position, thereby achieving the purpose of automatic rescue when the door leaf pinches the hand, preventing the door leaf from continuing to pinch the hand or further pinching the hand, and further improving the user's safety effect.

[0034] (5) By setting the detection head of the position sensor on the door opening side of the door frame and the detection component on the door opening side of the door leaf, as long as the door leaf reaches the safe position, the detection component that follows the movement of the door leaf can be detected by the detection head, so as to quickly respond to the position signal of the door leaf reaching the safe position to the main control module, thereby further improving the anti-pinch effect of the protective door. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a three-dimensional schematic diagram of the anti-pinch device of the protective door in a preferred embodiment of the present invention locking the door leaf in a safe position;

[0036] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0037] Figure 3 This is a schematic diagram of the structure of the door leaf and door frame of the protective door and the anti-pinch device in a preferred embodiment of the present invention;

[0038] Figure 4 for Figure 3 A magnified schematic diagram of point B in the middle;

[0039] Figure 5 This is a block diagram of the anti-pinch working principle of the protective door in a preferred embodiment of the utility model.

[0040] In the picture:

[0041] 10. Door leaf; 101. Upper head; 102. Door stile; 11. Hinge side; 12. Door opening side;

[0042] 20. Door frame; 201. Upper frame; 202. Door vertical frame;

[0043] 30. Anti-pinch device; 301. Main control module; 302. Positioning module; 3021. Electromagnetic component; 3022. First metal component; 303. Touch module; 3031. Second metal component; 3032. Third metal component; 304. Position sensor; 3041. Detection head; 3042. Detection component; 305. Power module; 306. Data processing module. DETAILED DESCRIPTION

[0044] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0045] like Figure 1-5As shown, a protective door with an anti-pinch function includes a door leaf 10, a door frame 20 and an anti-pinch device 30, wherein the side where the door leaf 10 is connected to the door frame 20 is a hinged side 11, the opening and closing side of the door leaf 10 and the door frame 20 is a door opening side 12, and a safety position is set on the door opening side 12 of the door leaf 10 and the door frame 20.

[0046] More specifically, the door opening side 12 of the door leaf 10 includes an upper protrusion 101 and a door opening stile 102, and the door opening side 12 of the door frame 20 includes an upper frame 201 and a door opening vertical side frame 202. When the door leaf 10 is installed in the door frame 20, the upper protrusion 101 and the upper frame 201 are opened and closed in correspondence with each other, and the door opening stile 102 and the door opening vertical side frame 202 are opened and closed in correspondence with each other. Therefore, the safety position can be set on the door opening stile 102 and / or the door opening vertical side frame 202.

[0047] In the embodiment of the present application, when the door leaf 10 gradually closes to the safe position, the anti-pinch measure will be activated, so that the door opening stile 102 is close to the door opening vertical frame 202 with a distance of 23-30 mm. Therefore, when the door leaf 10 reaches the safe position, a 23-30 mm gap will be left between the door opening stile 102 of the door leaf 10 and the door opening vertical frame 202 of the door frame 20. The distance of this gap serves as the anti-pinch zone W.

[0048] Preferably, the width of the anti-pinch zone W can also be set to any distance of 23mm, 25mm, 28mm, or 30mm between the door stile 102 and the door vertical frame 202, that is, when the door leaf 10 reaches the distance position of any anti-pinch zone W, the anti-pinch measure will be activated.

[0049] The anti-pinch device 30 includes a power module 305 , a data processing module 306 , a main control module 301 , a touch module 303 electrically connected to the main control module 301 , a position sensor 304 , and a positioning module 302 . The main control module 301 is electrically connected to the power module 305 .

[0050] Among them, the touch module 303 has a second metal part 3031 and a third metal part 3032. The second metal part 3031 covers the door opening stile 102 of the door leaf 10, and the third metal part 3032 covers the door opening vertical frame 202 of the door frame 20. The second metal part 3031 and the third metal part 3032 are extended along the vertical direction of the door leaf 10 and the door frame 20 respectively, thereby covering the entire side edges of the door opening stile 102 and the door opening vertical frame 202, thereby increasing the anti-pinch touch sensing area of ​​the door opening side 12 of the door leaf 10 and the door frame 20. No matter where the user's hand touches the edge of the entire door opening side 12, a touch signal will be triggered.

[0051] This makes it suitable for users of different heights. By providing this contact-type touch module 303, it can prevent erroneous operation caused by clothing or other insulating objects contacting the second metal member 3031 and the third metal member 3032, thereby improving the accuracy of hand touch detection. Furthermore, in addition to preventing hand pinching by sensing a hand touching the door opening side 12, the second metal member 3031 and the third metal member 3032 also provide a protective covering and decorative effect for the door opening stile 102 and the door opening vertical frame 202.

[0052] Moreover, by setting up touch sensing of the second metal part 3031 and the third metal part 3032, the accuracy is higher than the previous sensing method using photoelectric sensors, and it can also avoid false triggering by objects such as clothing, and avoid the problem of dust and dirt, the long circuit laying path and the tedious operation of ground hole installation.

[0053] In practice, the touch module 303 generates an anti-pinch signal, which includes a touch signal and a pinch signal. When a hand touches the second metal member 3031 or the third metal member 3032, the capacitance of the second metal member 3031 or the third metal member 3032 changes, causing the touch module 303 to generate a touch signal. The touch module 303 then transmits the detected touch signal to the main control module 301.

[0054] When a hand is clamped between the second metal part 3031 and the third metal part 3032 , the resistance value between the second metal part 3031 and the third metal part 3032 will be triggered to change, causing the touch module 303 to feedback a hand clamping signal, and the touch module 303 will feedback the detected hand clamping signal to the main control module 301.

[0055] Specifically, when the user's hand touches the second metal part 3031 or the third metal part 3032, the capacitance value of the second metal part 3031 or the third metal part 3032 will change and the capacitance value signal will be transmitted to the main control module 301. The main control module 301 transmits its capacitance value to the data processing module 306 which has pre-stored capacitance initial value. The data processing module 306 compares and analyzes the detected capacitance value with the capacitance initial value.

[0056] If so, when the comparison and analysis result of the data processing module 306 is that the detected capacitance value exceeds the range of the initial capacitance value, the data processing module 306 transmits the touch signal to the main control module 301 .

[0057] The main control module 301 sends a command based on the touch signal to control the position sensor 304 to detect the position signal of the door leaf 10 in real time to determine whether the door leaf 10 has reached the safe position. If the position sensor 304 detects that the door leaf 10 has reached the safe position, the position sensor 304 feeds back a position signal.

[0058] At this time, when the hand is still touching the second metal part 3031 or the third metal part 3032, the main control module 301 receives the touch signal and the position signal, and sends an instruction to control the electrical connection between the power module 305 and the positioning module 302, so that the positioning module 302 obtains electrical energy and locks the door leaf 10 in a safe position, thereby preventing the door leaf 10 from continuing to close and causing the hand to be pinched, thereby achieving the purpose of preventing the door leaf 10 from pinching the hand.

[0059] If the comparison analysis result of the data processing module 306 is that the detected capacitance value does not exceed the range of the initial capacitance value, the touch module 303 will not feedback the touch signal, and the main control module 301 controls to disconnect the electrical connection between the power module 305 and the positioning module 302, indicating that the hand has not touched the second metal part 3031 or the third metal part 3032, or that the hand has been released from the pinching state, and the door leaf 10 can be closed normally.

[0060] When the door leaf 10 is in the open state, the resistance value between the second metal member 3031 on the door leaf 10 and the third metal member 3032 on the door frame 20 is infinite.

[0061] When the user's hand is clamped between the second metal member 3031 and the third metal member 3032, the second metal member 3031 and the third metal member 3032 communicate with each other through the hand. Consequently, the resistance between the second metal member 3031 and the third metal member 3032 becomes greater than 0 and less than infinity (the resistance at this point is less than the initial resistance value pre-stored in the data processing module 306). The resistance value signal is then fed back to the main control module 301, which transmits the resistance value to the data processing module 306, which has the initial resistance value pre-stored. The data processing module 306 then compares and analyzes the detected resistance value with the initial resistance value.

[0062] If so, when the comparison and analysis result of the data processing module 306 is that the detected resistance value exceeds the range of the initial resistance value, the data processing module 306 transmits a hand clamping signal to the main control module 301 .

[0063] The main control module 301 sends a command based on the hand-pinching signal to control the position sensor 304 to detect the position signal of the door leaf 10 in real time to determine whether the door leaf 10 has reached the safe position. If the position sensor 304 detects that the door leaf 10 has reached the safe position, the position sensor 304 feeds back a position signal.

[0064] At this time, when the hand is still clamped between the second metal part 3031 and the third metal part 3032, the main control module 301 receives the hand clamping signal and the position signal, and sends an instruction to control the electrical connection between the power module 305 and the positioning module 302, so that the positioning module 302 obtains electrical energy and locks the door leaf 10 in a safe position, thereby relieving the dilemma of the door leaf 10 clamping the hand, achieving the purpose of automatic rescue when the door leaf 10 clamps the hand, preventing the door leaf 10 from continuing to clamp the hand or further clamping the hand, and further improving the user's safety effect.

[0065] If the comparison and analysis result of the data processing module 306 is that the detected resistance value does not exceed the range of the initial resistance value, the data processing module 306 will not transmit a hand-pinching signal to the main control module 301. The main control module 301 controls the disconnection of the electrical connection between the power module 305 and the positioning module 302, indicating that the hand is not clamped between the second metal part 3031 and the third metal part 3032, and the door leaf 10 can be closed normally.

[0066] Furthermore, if the size of the object clamped between the second metal member 3031 and the third metal member 3032 is larger than the safe position, the door 10 has not yet reached the safe position. Therefore, the main control module 301 only receives the hand-pinching signal transmitted by the data processing module 306, but does not receive the position signal from the position sensor 304. Therefore, the main control module 301 does not send a command to the positioning module 302 to lock the door 10 in the safe position. This prevents the door 10 from being forcibly locked in the safe position, which could cause greater harm to the user.

[0067] Since the main control module 301 first receives the position signal and then receives the clamping signal, it sends an instruction to control the positioning module 302 to lock the door leaf 10 in the safe position. Therefore, even if the door leaf 10 is pushed by external force to continue to clamp the organism until the safe position, and then the main control module 301 receives the position signal from the position sensor 304, it will not send an instruction to control the positioning module 302 to lock the door leaf 10 in the safe position.

[0068] In this way, the embodiment of the present application arranges the touch module, position sensor 304, and positioning module 302 of the anti-pinch device 30 on the door opening side 12, thereby sensing that a hand touches the door leaf 10 and the door frame 20 on the door opening side 12, and when the door leaf 10 is in the safe position, the touch signal and position signal are fed back to the main control module 301, so that the main control module 301 sends an instruction to control the positioning module 302 to lock the door leaf 10 in the safe position, thereby preventing the door leaf 10 from continuing to close and pinching the user's hand;

[0069] Compared with the previous implementation method of setting mutually repelling magnets on the hinged side 11 of the door leaf 10 and the door frame 20 to slow down the closing speed of the door leaf 10, the embodiment of the present application sets the anti-pinch device 30 on the door opening side 12, overcoming the problem of difficulty in resisting the torque generated by closing the door leaf 10, and being able to lock the door leaf 10 in a safe position. As long as the hand is still between the door leaf 10 and the door frame 20, the door leaf 10 cannot be closed, thereby preventing the problem of pinching the hand when the door leaf 10 continues to close slowly, thereby fundamentally achieving the purpose of preventing hand pinching.

[0070] Further description of the position sensor 304: the position sensor 304 has a detection head 3041 and a detection member 3042. When the detection head 3041 is set on the upper frame 201 of the door frame 20, the detection member 3042 is correspondingly set on the upper protrusion 101 of the door leaf 10, so that the detection member 3042 follows the movement of the door leaf 10. When the door leaf 10 is opened and closed, the detection member 3042 can pass under the detection head 3041, thereby allowing the detection head 3041 to obtain the position of the door leaf 10 by detecting the detection member 3042. The position sensor 304 obtains the position signal of the door leaf 10 and transmits the position signal to the main control module 301. The position sensor 304 of the embodiment of the present application can adopt a limit switch, a metal proximity sensor, a position sensor, etc. In this way, it is possible to quickly respond to the main control module 301 with the position signal of the door leaf 10 reaching the safe position, further improving the anti-pinch effect of the protective door.

[0071] In addition, the detection head 3041 can be optionally set on the vertical door opening frame 202 of the door frame 20. At this time, the detection component 3042 needs to be correspondingly set on the door opening stile 102 of the door leaf 10, so that when the door leaf 10 is opened and closed, the detection component 3042 can be driven to pass through the detection area of ​​the detection head 3041, ensuring that the detection head 3041 can obtain the position signal of the door leaf 10.

[0072] It is a preferred embodiment to dispose the position sensor 304 between the upper protrusion 101 and the upper frame 201 of the protective door, which can prevent the position sensor 304 from obstructing the user when entering and exiting the door.

[0073] Further description of the positioning module 302, the positioning module 302 has an electromagnetic component 3021 and a first metal component 3022, the electromagnetic component 3021 is arranged on the upper frame 201 of the door frame 20, and the first metal component 3022 is correspondingly arranged on the upper protrusion 101 of the door leaf 10, so that the first metal component 3022 follows the movement of the door leaf 10, and when the door leaf 10 is opened and closed, the first metal component 3022 can slide under the electromagnetic component 3021.

[0074] In the embodiment of the present application, the electromagnetic member 3021 can be an electromagnet, and the first metal member 3022 can be a magnetically attracted iron block. Therefore, the electromagnetic member 3021 generates magnetic force when energized and loses its magnetic force when de-energized. When energized, the electromagnetic member 3021 can magnetically attract the first metal member 3022 on the door leaf 10, thereby locking the door leaf 10. When de-energized, the electromagnetic member 3021 no longer magnetically attracts the first metal member 3022, and the door leaf 10 returns to its naturally open and closed state.

[0075] In addition, the electromagnetic component 3021 is set on the vertical door opening frame 202 of the door frame 20. At this time, the first metal component 3022 is correspondingly set on the door opening stile 102 of the door leaf 10, so that after the door leaf 10 is closed and reaches the safety position, the electromagnetic component 3021 can accurately magnetically attract the first metal component 3022, thereby locking the door leaf 10 in the safety position.

[0076] It is a preferred embodiment to dispose the positioning module 302 between the upper protrusion 101 and the upper frame 201 of the protective door, which can avoid the positioning module 302 being an obstruction to the user when entering and leaving the door.

[0077] Compared with the implementation method of using the repulsive force of magnets to counteract the torque of closing the door leaf 10, the implementation method of locking the door leaf 10 in a safe position by magnetically attracting the first metal part 3022 by the electromagnetic part 3021 can prevent children from playing and using their bodies to push the door leaf 10 or breaking into the door gap, thereby better resisting the influence of human blocking of the door and natural wind.

[0078] Therefore, since the lever arm of the door leaf 10 and the door frame 20 on the door opening side 12 is much larger than the lever arm of the hinged side 11, the electromagnetic component 3021 of the positioning module 302 is set on the door opening side 12 of the door frame 20 and the first metal component 3022 is set on the door opening side 12 of the door leaf 10, and then the magnetic attraction force of the electromagnetic component 3021 on the first metal component 3022 is used to counteract the torque generated when the door leaf 10 is closed, thereby overcoming the problem that the door leaf 10 continues to close and pinches hands when a magnet is set on the hinged side 11 in the past due to the small lever arm is difficult to counteract the torque generated by closing the door leaf 10; and the door leaf 10 is locked in or rebounded to a safe position by the electromagnetic component 3021 magnetically attracting the first metal component 3022, which is better than the previous use of the repulsive force of the magnet to counteract the torque of closing the door leaf 10, thereby improving the anti-pinching effect and the escape effect.

[0079] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A protective door with anti-pinch function, characterized in that: It includes a door leaf, a door frame and an anti-pinch device, wherein there is a door opening side between the door leaf and the door frame, and a safety position is set on the door opening side; The anti-pinch device comprises a power module, a main control module, a touch module electrically connected to the main control module and arranged on the door opening side, a position sensor, and a positioning module; The touch module obtains the anti-pinch signal when the hand touches the door opening side, and the position sensor obtains the position signal when the door leaf reaches the safe position. After receiving the anti-pinch signal and the position signal, the main control module sends an instruction to control the positioning module to lock the door leaf in the safe position.

2. The protective door with anti-pinch function according to claim 1, characterized in that: The door opening side of the door leaf includes an upper protrusion and a door opening stile, and the door opening side of the door frame includes an upper frame and a door opening vertical side frame. The upper protrusion is opened and closed correspondingly to the upper frame, and the door opening stile is opened and closed correspondingly to the door opening vertical side frame.

3. The protective door with anti-pinch function according to claim 2, characterized in that: The positioning module comprises an electromagnetic component and a first metal component. When the electromagnetic component is arranged on the upper frame, the first metal component is correspondingly arranged on the upper head. Or when the electromagnetic component is arranged on the vertical frame of the door opening, the first metal component is correspondingly arranged on the door opening stile; The electromagnetic component magnetically attracts the door leaf to the first metal component in the safety position and locks the door leaf in the safety position.

4. The protective door with anti-pinch function according to claim 2, characterized in that: When the door leaf reaches the safety position, the door stile is close to the door vertical frame at a distance of 23-30 mm.

5. The protective door with anti-pinch function according to claim 2, characterized in that: The main control module and the touch module are electrically connected to the data processing module. The touch module has a second metal part and a third metal part. The second metal part is arranged on the door opening stile of the door leaf, and the third metal part is arranged on the door opening vertical frame of the door frame. The second metal part and the third metal part are respectively extended along the vertical direction of the door leaf and the door frame.

6. The protective door with anti-pinch function according to claim 5, characterized in that: When the capacitance value of the second metal member or the third metal member exceeds the range of the initial capacitance value pre-stored in the data processing module, the touch control module feeds back a touch signal in the anti-pinch signal, and the main control module sends an instruction based on the touch signal to control the position sensor to detect the position signal of the door leaf in real time; When the main control module receives the touch signal and the position signal at the same time, it sends an instruction to control the electrical connection between the positioning module and the power module to lock the door leaf in a safe position.

7. The protective door with anti-pinch function according to claim 5, characterized in that: When the capacitance value of the second metal member or the third metal member is within the range of the initial capacitance value, the main control module sends an instruction to control the disconnection of the electrical connection between the power module and the positioning module.

8. The protective door with anti-pinch function according to claim 5, characterized in that: When the resistance value between the second metal member and the third metal member exceeds the range of the initial resistance value pre-stored in the data processing module, the touch module feeds back a hand-pinching signal in the anti-pinching signal, and the main control module sends an instruction based on the hand-pinching signal to control the position sensor to detect the position signal of the door leaf in real time; When the main control module receives the hand clamping signal and the position signal at the same time, it sends an instruction to control the electrical connection between the positioning module and the power module to lock the door leaf in a safe position.

9. The protective door with anti-pinch function according to claim 5, characterized in that: When the resistance value between the second metal member and the third metal member is within the range of the initial resistance value, the main control module sends an instruction to control the cutting off of the electrical connection between the power module and the positioning module.

10. The protective door with anti-pinch function according to any one of claims 2 to 9, characterized in that: The position sensor has a detection head and a detection member. When the detection head is arranged on the upper frame, the detection member is correspondingly arranged on the upper head. Or when the detection head is arranged on the vertical frame of the door opening, the detection member is correspondingly arranged on the door opening stile; The detection head detects the detection member on the door leaf that has reached the safe position and feeds back the position signal to the main control module.

Images