Anti-pinch safety door edge buffer device
By combining a touch sensor and an electric push rod, the problems of cumbersome components and lack of alarm in existing anti-pinch devices are solved. This enables the device to prevent the hand from being pinched and to sound an alarm when the door is closed, thus improving the safety and practicality of the anti-pinch device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing anti-pinch devices are cumbersome and lack active alarm functions, making it easy for children's fingers to get pinched when adults close doors carelessly.
The system employs a combination of pressure sensors, electric push rods, and controllers. The sensors detect the pressure signal when the door is closed, control the electric push rods to extend the stop plate to prevent the door from trapping a hand, and issue an alarm upon detecting pressure.
It effectively prevents children's fingers from getting caught in doors, increasing safety, and alerts adults with an alarm, improving the practicality and safety of the anti-pinch device.
Smart Images

Figure CN224078945U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of anti-pinch device, and in particular relates to an anti-pinch safety door edge buffer device. Background Technology
[0002] In daily life, when there are children at home, it is common for children to run around with adults. Accidents often occur where adults close doors carelessly, causing children's hands to get caught in the doors. In order to prevent such accidents from happening,
[0003] However, existing anti-pinch devices have too many components, are too cumbersome to install, and lack active alarm functionality. Therefore, we provide an anti-pinch safety door edge buffer device to solve these problems. Utility Model Content
[0004] The purpose of this invention is to provide an anti-pinch safety door edge buffer device. Through the cooperation of a touch sensor and a controller, it solves the problem in the prior art where a child's fingers are pinched and injured when the child following behind closes the door forcefully without the adult's attention.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.
[0006] This utility model relates to an anti-pinch safety door edge buffer device, comprising a door frame, a door body, and an anti-pinch component. The anti-pinch component is installed on the inner wall of the door frame, and the door body is set within the door frame. The anti-pinch component includes a mounting box, with a mounting groove on one side of the mounting box. Two electric push rods are installed in the mounting groove, and the telescopic ends of the two electric push rods are fixedly connected to a base plate. A pressure sensor is installed on the upper surface of the base plate, and a pressure plate is provided above the pressure sensor. The transmitting end of the pressure sensor is electrically connected to a first data line. A controller is installed on the side of the door frame away from the mounting box, and the other end of the first data line is electrically connected to the receiving end of the controller. A door suction column is fixedly installed on the inner wall of the door body, and an electronic pressure sensor is fixedly installed on the inner wall of the door frame. The receiving end of the electronic pressure sensor is fixedly connected to a door suction base, and the transmitting end of the electronic pressure sensor is electrically connected to a second data line. The other end of the second data line is electrically connected to the receiving end of the controller, and the signal transmitting end of the controller is connected to the signal receiving ends of the two electric push rods respectively.
[0007] The present invention is further configured such that springs are symmetrically fixedly installed on the upper end face of the base plate, and the other ends of the two springs are jointly fixedly installed on the lower end face of the pressure plate.
[0008] The present invention is further configured such that an outer handle is fixedly connected to the outer side of the door body, and an inner handle is fixedly connected to the inner side of the door body.
[0009] The present invention is further configured such that two spring hinges are provided between the door frame and the door body, and the door body is connected to the door frame hinges through the two spring hinges.
[0010] The present invention is further configured such that an anti-slip block is fixedly connected to the upper end face of the pressure plate, and the anti-slip block is a rubber pad with anti-slip texture on its surface.
[0011] The present invention is further configured such that a first door hole and a second door hole are provided on the side wall of the door frame, and the side walls of the second data line and the first data line are slidably connected to the inner walls of the first door hole and the second door hole, respectively.
[0012] The present invention is further provided that a control display screen is provided on the side wall of the controller.
[0013] The present invention is further configured such that the two electric push rods, the touch pressure sensor, the electronic pressure sensor, and the controller are all electrically connected to an external power source.
[0014] The present invention has the following beneficial effects.
[0015] 1. This utility model incorporates an electronic pressure sensor, a controller, electric push rods, a pressure plate, and a pressure sensor. When the door closes, the electronic pressure sensor transmits a signal to the controller. Upon receiving the signal, the controller controls two electric push rods to push out the bottom plate and the pressure plate above, preventing the door from closing. After the pressure plate contacts the door and is pressed, it contacts the pressure sensor, which transmits a signal to the controller. After 3 seconds, the controller retracts the two electric push rods, allowing the door to close normally without obstruction. At this point, the force of the door closing poses no threat to a child's fingers, effectively preventing finger injuries and making it more practical.
[0016] 2. This utility model, by setting up a first data line, a second data line, and a controller, allows the touch pressure sensor to transmit signals to the controller via the first data line, causing the controller to issue an alarm to remind adults to pay attention to children and prevent their fingers from being pinched or other situations, thus enhancing safety. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.
[0018] Figure 1 This is a schematic diagram of the outer structure of a hand-pinch prevention safety door edge buffer device.
[0019] Figure 2 This is a schematic diagram of the inner structure of a hand-pinch prevention safety door edge buffer device.
[0020] Figure 3 This is a three-dimensional structural diagram of the door frame in an anti-pinch safety door edge buffer device.
[0021] Figure 4 This is a three-dimensional structural diagram of a safety door edge buffer device for preventing hand pinching after the door is opened.
[0022] Figure 5 for Figure 4 A magnified structural diagram of point A in the middle.
[0023] In the attached diagram: 1. Door frame; 2. Door body; 3. Mounting box; 4. Mounting slot; 5. Electric push rod; 6. Base plate; 7. Spring; 8. Touch pressure sensor; 9. Touch pressure plate; 10. Anti-slip block; 11. Door suction column; 12. Electronic pressure sensor; 13. Door suction base; 14. First data cable; 15. Second data cable; 16. Controller; 17. Door opening number one; 18. Door opening number two; 19. Outer handle; 20. Inner handle. Detailed Implementation
[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0025] Example 1
[0026] Please see Figure 1-5 This utility model is an anti-pinch safety door edge buffer device, including a door frame 1, a door body 2, and an anti-pinch component. The anti-pinch component is installed on the inner side wall of the door frame 1, and the door body 2 is set in the door frame 1. The anti-pinch component includes a mounting box 3, and a mounting groove 4 is opened on one side of the mounting box 3. Two electric push rods 5 are installed in the mounting groove 4. The telescopic ends of the two electric push rods 5 are fixedly connected to a base plate 6. A touch pressure sensor 8 is installed on the upper surface of the base plate 6. A touch pressure plate 9 is set above the touch pressure sensor 8. The transmitting end of the touch pressure sensor 8 is electrically connected to a first data line 14. The door frame 1 is opposite to... A controller 16 is installed on one side of the mounting box 3. The other end of the first data line 14 is electrically connected to the receiving end of the controller 16. A door suction column 11 is fixedly installed on the inner wall of the door body 2. An electronic pressure sensor 12 is fixedly installed on the inner wall of the door frame 1. The receiving end of the electronic pressure sensor 12 is fixedly connected to the door suction seat 13. The transmitting end of the electronic pressure sensor 12 is electrically connected to the second data line 15. The other end of the second data line 15 is electrically connected to the receiving end of the controller 16. The signal transmitting end of the controller 16 is connected to the signal receiving end of the two electric push rods 5 respectively.
[0027] Specifically: When an adult closes door 2, the door catch 11 separates from the door catch seat 13. At this time, the electronic pressure sensor 12 no longer receives the pressure signal transmitted by the door catch seat 13. Then, the electronic pressure sensor 12 transmits the disconnected pressure signal to the controller 16 through the first data line 14. At this time, the controller 16 controls the two electric push rods 5 to push out the base plate 6 and make the door 2 contact the touch plate 9. After being subjected to the downward pressure of the door 2, the touch plate 9 will move downward and trigger the touch sensor 8. At this time, the touch sensor 8 transmits the signal to the controller 16 through the first data line 14, controlling... After receiving the signal from the first data line 14, the device 16 issues an alarm. Three seconds after issuing the alarm, it controls the two electric push rods 5 to retract the base plate 6 back into the mounting slot 4. The door 2 is no longer blocked by the pressure plate 9 and continues to close within the door frame 1. Since the door 2 is stationary due to the pressure plate 9 during the closing process and only continues to close after a three-second delay, the force of the door 2 closing at this time can no longer threaten the child's fingers. This effectively avoids the child's fingers being pinched by the door due to the adult closing the door with great force. Moreover, the alarm has been issued by the controller 16, making it safer.
[0028] Example 2
[0029] Please see Figure 1-5 Based on Embodiment 1, springs 7 are symmetrically fixedly installed on the upper end face of the base plate 6, and the other ends of the two springs 7 are fixedly installed on the lower end face of the pressure plate 9. An outer handle 19 is fixedly connected to the outer side of the door body 2, and an inner handle 20 is fixedly connected to the inner side of the door body 2. Two spring hinge pieces are provided between the door frame 1 and the door body 2, and the door body 2 is hinged to the door frame 1 through the two spring hinge pieces. An anti-slip block 10 is fixedly connected to the upper end face of the pressure plate 9. The anti-slip block 10 is a rubber pad with anti-slip texture on the surface. A first door hole 17 and a second door hole 18 are opened on the side wall of the door frame 1. The side walls of the second data line 15 and the first data line 14 are slidably connected to the inner walls of the first door hole 17 and the second door hole 18, respectively. A control display screen is provided on the side wall of the controller 16. The two electric push rods 5, the pressure sensor 8, the electronic pressure sensor 12, and the controller 16 are all electrically connected to an external power supply.
[0030] Specifically: By setting two springs 7, when the pressure plate 9 is not subjected to downward pressure, the two springs 7 can reset and push the pressure plate 9 upward to disengage it from the trigger end of the pressure sensor 8, thus preventing the pressure sensor 8 from being constantly in the triggered state; by setting an outer handle 19 and an inner handle 20, personnel can lock the door 2 in the door frame 1 using the outer handle 19 and the inner handle 20; by setting a spring hinge, the door 2 automatically springs back and closes in the door frame 1 after disengaging from the magnetic attraction of the door catch 13 and the door catch post 11; by setting an anti-slip block 10, the anti-slip block 10 can increase the contact between the side wall of the door 2 and the pressure plate 9. The friction force of the surface; by opening the first door hole 17 and the second door hole 18, the second data line 15 and the first data line 14 can pass through the first door hole 17 and the second door hole 18 respectively to connect with the controller 16; by setting up a control display screen, the operator can turn off the alarm issued by the controller 16 through the control display screen; by making the two electric push rods 5, the touch pressure sensor 8, the electronic pressure sensor 12, and the controller 16 electrically connected to an external power source, the two electric push rods 5, the touch pressure sensor 8, the electronic pressure sensor 12, and the controller 16 are all powered by an external power source to ensure normal use.
[0031] The working principle of this utility model is as follows: When an adult opens the door 2, the door catch 11 will contact the door catch seat 13 and magnetically attach to it as the door 2 rotates. At this time, the door catch seat 13 is pressed and transmits a signal to the electronic pressure sensor 12. Then, the electronic pressure sensor 12 transmits the touch signal to the controller 16 through the second data line 15. When the door 2 is closed, the door catch 11 disengages from the door catch seat 13 and transmits a signal to the controller 16 again through the electronic pressure sensor 12 and the first data line 14. At this time, the controller 16 controls the two electric push rods 5 to push the base plate 6 out of the mounting groove 4. When the door 2 is about to close, its side wall will contact the touch plate 9 first, and the touch plate 9 will be subjected to downward pressure. The touch pressure sensor 8 is triggered, and then the touch pressure sensor 8 transmits a signal to the controller 16 through the first data line 14. After receiving the signal from the first data line 14, the controller 16 issues an alarm. After 3 seconds of issuing the alarm, it controls the two electric push rods 5 to retract the base plate 6 back into the mounting groove 4. At this time, the door 2 is no longer blocked by the touch pressure plate 9 and continues to close within the door frame 1. Since the door 2 is blocked by the touch pressure plate 9 within the door frame 1 and is in a stationary state, it continues to close after a 3-second delay. At this time, the force of the door 2 closing is no longer a threat to the child's fingers. This can effectively prevent the child's fingers from being pinched by the door due to the adult closing the door with great force. Moreover, the controller 16 has already issued an alarm reminder, making it safer.
[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.
Claims
1. A safety door edge buffer device against hand clamping, comprising a door frame (1), a door body (2) and a clamping prevention assembly, characterized in that: The anti-pinch assembly is mounted on the inner side wall of the door frame (1), and the door body (2) is arranged in the door frame (1); The anti-pinch assembly comprises a mounting box (3), one side of the mounting box (3) is provided with a mounting groove (4), two electric push rods (5) are mounted in the mounting groove (4), the telescopic ends of the two electric push rods (5) are fixedly connected with a bottom plate (6), the upper end surface of the bottom plate (6) is provided with a touch pressure sensor (8), the upper side of the touch pressure sensor (8) is provided with a touch pressure plate (9), the transmitting end of the touch pressure sensor (8) is electrically connected with a first data line (14), the side of the door frame (1) away from the mounting box (3) is provided with a controller (16), and the other end of the first data line (14) is electrically connected with the receiving end of the controller (16). The inner side wall of the door body (2) is fixedly provided with a door suction column (11), the inner side wall of the door frame (1) is fixedly provided with an electronic pressure sensor (12), the receiving end of the electronic pressure sensor (12) is fixedly connected with a door suction seat (13), the transmitting end of the electronic pressure sensor (12) is electrically connected with a second data line (15), and the other end of the second data line (15) is electrically connected with the receiving end of the controller (16). The signal transmitting end of the controller (16) is signal connected with the signal receiving end of the two electric push rods (5).
2. A door edge buffer according to claim 1, wherein: The upper end surface of the bottom plate (6) is fixedly provided with a spring (7) in a symmetrical manner, and the other end of the two springs (7) is fixedly mounted on the lower end surface of the touch pressure plate (9).
3. A door edge buffer according to claim 1, wherein: The outer side of the door body (2) is fixedly connected with an outer handle (19), and the inner side of the door body (2) is fixedly connected with an inner handle (20).
4. The safety door edge buffer of claim 1, wherein: Two spring hinge pieces are arranged between the door frame (1) and the door body (2), and the door body (2) is hingedly connected with the door frame (1) through the two spring hinge pieces.
5. The anti-pinch safety door edge buffer of claim 1, wherein: The upper end surface of the touch pressure plate (9) is fixedly connected with an anti-skid block (10), and the anti-skid block (10) is a rubber pad with anti-skid lines on the surface.
6. A doorjamb prevention safety door edge bumper device according to claim 1, wherein: The side wall of the door frame (1) is provided with a first door hole (17) and a second door hole (18), and the side walls of the second data line (15) and the first data line (14) are slidably connected with the inner walls of the first door hole (17) and the second door hole (18).
7. A doorjamb prevention safety door edge bumper device according to claim 1, wherein: The side wall of the controller (16) is provided with a control display screen.
8. The anti-pinch safety door edge buffer of claim 1, wherein: The two electric push rods (5), the touch pressure sensor (8), the electronic pressure sensor (12) and the controller (16) are electrically connected with an external power supply.