Anti-pinch device for metro platform screen door

Abstract

The utility model discloses an anti-pinch device for a metro platform screen door, and belongs to the technical field of metro platform screen doors. Comprising a supporting frame, a sliding door is slidably connected into the supporting frame, a driving assembly is installed between the supporting frame and the sliding door, and a buffering anti-pinch assembly is arranged at the end, away from the supporting frame, of the sliding door. When detecting pressure change, the pressure sensor transmits a signal to the driving assembly, and the sliding door is controlled to move reversely through the driving assembly. The anti-pinch sliding door has the advantages that after the sliding door abuts against the human body, the human body is prevented from being pinched through the buffering effect of the buffering anti-pinch assembly, meanwhile, the pressure sensor on the driving assembly detects the change of pressure and transmits a signal to the driving assembly, the sliding door is controlled by the driving assembly to move reversely, and therefore the sliding door is separated from the human body.

Description

Technical Field

[0001] The utility model relates to the technical field of subway shielding doors, in particular to an anti-pinch device for subway shielding doors. Background Art

[0002] Subway is an important urban rail transit. Shield doors are installed in subway platforms to separate the platform from the track. Under normal circumstances, the shield doors are closed. Only when the subway stops at the station can the shield doors be opened for passengers to pass through and enter the subway. In the prior art, the shield doors are easy to pinch passengers when in use, which poses a safety hazard.

[0003] In view of the above problems, a Chinese utility model patent with authorization announcement number CN217327101U discloses an anti-pinch device for subway screen doors, including a fixed door, a screen door body is slidably connected to one side of the fixed door, a fixed block is fixedly connected to one side of the screen door body, a bearing block is slidably connected to one side of the fixed block, and an anti-pinch mechanism is arranged on one side of the bearing block. When in use, although the fingers can be quickly withdrawn under the action of the spring when pinched, the fingers will still rub against the rubber strip when withdrawn, and there are still certain safety hazards. Utility Model Content

[0004] The utility model aims to provide a subway screen door anti-pinch device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A subway shield door anti-pinch device is designed, comprising a supporting frame, a sliding door slidably connected inside the supporting frame, a driving assembly installed between the supporting frame and the sliding door, a buffer anti-pinch assembly is provided at one end of the sliding door away from the supporting frame, and a signal transmission module is also included. The signal transmission module includes a pressure sensor, and the pressure sensor is installed on the driving assembly. When the pressure sensor detects a pressure change, the signal is transmitted to the driving assembly, and the sliding door is controlled to move in the opposite direction through the driving assembly.

[0007] Preferably, the driving assembly includes an electric telescopic rod, which is provided with two electric telescopic rods, and the fixed ends of the two electric telescopic rods are respectively fixedly installed on the top and bottom of the support frame at one end away from the sliding door, the telescopic ends of the two electric telescopic rods are hinged with at least one group of connecting rods, two connecting rods in a group of connecting rods are cross-arranged and hingedly connected in the middle, and the end of the last group of connecting rods away from the electric telescopic rods is hinged with a sliding block, and the two sliding blocks are slidably installed on the side of the sliding door away from the buffer and anti-pinch assembly, and the pressure sensor is installed at the telescopic end of the electric telescopic rod.

[0008] Preferably, the buffer anti-pinch assembly includes an anti-pinch rubber strip, a spring and a guide structure. The spring is provided in plurality and is evenly spaced along the height direction of the sliding door. The spring is fixed between the sliding door and the anti-pinch rubber strip. The guide structure is used to guide the movement of the anti-pinch rubber strip.

[0009] Preferably, the guide structure is provided with multiple groups and is arranged between adjacent springs, the guide structure includes a guide rod and a guide groove, the guide groove is opened on the sliding door, the guide groove is a stepped groove, including a large diameter section and a small diameter section, one end of the guide rod is fixed on the anti-pinch rubber strip, and the other end is a limiting end with a larger diameter, the middle part of the guide rod is slidably installed in the small diameter section, and the limiting end is slidably installed in the large diameter section.

[0010] Preferably, the connecting rods are provided with two groups, the two groups of connecting rods are hingedly connected, a sliding groove extending along the height direction of the sliding door is provided on the side of the sliding door facing away from the buffer anti-pinch assembly, and the sliding block is slidably installed in the sliding groove.

[0011] Preferably, the support frame is a hollow structure, the drive assembly and the sliding door are both arranged in the support frame, the height of the sliding door is smaller than the height of the support frame, and the upper and lower ends of the sliding door on a side away from the buffer anti-pinch assembly are provided with limit blocks protruding outward, and correspondingly, the upper and lower ends of the support frame on a side away from the drive assembly are provided with limit plates protruding inward, and the limit plates and limit blocks cooperate to limit the sliding door.

[0012] Preferably, a warning mechanism is further included, wherein the warning mechanism is arranged on the side wall of the sliding door on the side close to the buffer anti-pinch component, the warning mechanism includes a warning light and a speaker, and the warning mechanism is used to remind passengers when the sliding door is closed.

[0013] Preferably, it also includes an emergency stop switch, which is arranged on the sliding door. The emergency stop switch is connected to the drive component through a signal transmission module circuit. When the emergency stop switch is pressed, the drive component controls the sliding door to move in the reverse direction.

[0014] Compared with the prior art, the beneficial technical effect of the utility model is that the sliding door switch is driven by the driving component, and after the sliding door abuts against the human body, the buffering effect of the buffering anti-pinch component is used to prevent the human body from being pinched. At the same time, the pressure sensor on the driving component detects the pressure change and transmits the signal to the driving component, which controls the sliding door to move in the opposite direction through the driving component, thereby separating the sliding door from the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the driving component in the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the buffer anti-pinch component in the utility model;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram at point A in the middle.

[0019] In the figure, 1-support frame; 2-sliding door; 3-limit block; 4-electric telescopic rod; 5-connecting block; 6-pressure sensor; 7-rotating shaft; 8-connecting rod; 9-limit plate; 10-sliding block; 11-spring; 12-guide rod; 13-limit end; 14-anti-pinch rubber strip; 15-speaker; 16-warning light. DETAILED DESCRIPTION

[0020] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments, but the following embodiments are only used to illustrate the present invention in detail and do not limit the scope of the present invention in any way. The equipment parts, structures, etc. involved in the following embodiments are all conventional commercially available products unless otherwise specified.

[0021] Example 1: A subway screen door anti-pinch device, see Figure 1-4 , including a supporting frame 1, a sliding door 2 is slidably connected inside the supporting frame 1, a driving component is installed between the supporting frame 1 and the sliding door 2, a buffer anti-pinch component is provided at the end of the sliding door 2 away from the supporting frame 1, and also includes a signal transmission module, the signal transmission module includes a pressure sensor 6, the pressure sensor 6 is installed on the driving component, and when the pressure sensor 6 detects a pressure change, the signal is transmitted to the driving component, and the sliding door 2 is controlled to move in the opposite direction through the driving component.

[0022] Specifically, Figure 1 and Figure 2As shown, the support frame 1 is a hollow structure, the driving assembly and the sliding door 2 are both arranged in the support frame 1, the total length of the sliding door 2 is smaller than the total length of the support frame 1, and the upper and lower ends of the side of the sliding door 2 away from the buffer anti-pinch assembly are protruding outward with limit blocks 3. Correspondingly, the upper and lower ends of the side of the support frame 1 away from the driving assembly are protruding inward with limit plates 9. The limit plates 9 and the limit blocks 3 cooperate to limit the sliding door 2 to prevent the sliding door 2 from sliding out of the support frame 1. The driving assembly includes an electric telescopic rod 4, which is provided with two electric telescopic rods 4. The fixed ends of the two electric telescopic rods 4 are respectively fixedly installed on the top and bottom of the end of the support frame 1 away from the sliding door 2. The telescopic ends of the two electric telescopic rods 4 are fixedly installed with a connecting block 5. A pressure sensor 6 is fixedly installed on one side of the connecting block 5. A first group of connecting rods 8 are hinged on the other side of the connecting block 5. The two connecting rods 8 are cross-arranged and hingedly connected in the middle through a rotating shaft 7. The other end of the first group of connecting rods 8 is hinged with a second group of connecting rods 8. The second group of connecting rods 8 are hinged with a sliding block 10 at one end away from the electric telescopic rod 4. The two sliding blocks 10 are slidably installed on the side of the sliding door 2 that is away from the buffer anti-pinch assembly. Specifically, a sliding groove (not shown in the figure) extending along the height direction of the sliding door 2 is opened on the side of the sliding door 2 that is away from the buffer anti-pinch assembly. The sliding block 10 is slidably installed in the sliding groove, and the sliding groove can play a limiting and guiding role for the sliding block 10.

[0023] like Figure 3 and Figure 4 As shown, the buffer anti-pinch assembly includes an anti-pinch rubber strip 14, a spring 11 and a guide structure. The spring is provided in multiple numbers and is evenly spaced along the height direction of the sliding door 2. The spring 11 is fixed between the sliding door 2 and the anti-pinch rubber strip 14. One end of the spring 11 is fixed to the sliding door 2, and the other end is fixed to the anti-pinch rubber strip 14. The guide structure is provided in multiple groups and is arranged between adjacent springs 11. The guide structure includes a guide rod 12 and a guide groove. The guide groove is provided on the sliding door 2. The guide groove is a stepped groove, including a large diameter section and a small diameter section. The small diameter section is arranged near the anti-pinch rubber strip 14. One end of the guide rod 12 is fixed to the anti-pinch rubber strip 14, and the other end is a limiting end 13 with a larger diameter. The middle part of the guide rod 12 is slidably installed in the small diameter section, and the limiting end 13 is slidably installed in the large diameter section. The guide rod 12 and the guide groove cooperate to guide and limit the movement of the anti-pinch rubber strip 14.

[0024] like Figure 1As shown, the subway shield door anti-pinch device also includes a warning mechanism, which is arranged on the side wall of the sliding door 2 near the buffer anti-pinch component. The warning mechanism includes a warning light 16 and a speaker 15. When the door is closed, the warning light will light up, and the speaker will broadcast to remind passengers that the shield door is closed. The subway shield door anti-pinch device also includes an emergency stop switch (not shown in the figure), which is arranged on the sliding door 2. The emergency stop switch is connected to the drive component through a signal transmission module circuit. When the emergency stop switch is pressed, the drive component controls the sliding door 2 to move in the reverse direction.

[0025] The specific working principle of the subway screen door anti-pinch device of the utility model is as follows: when the subway is about to close the door, the warning light is on, and the loudspeaker broadcasts an announcement to remind passengers that the screen door is closed, the electric telescopic rod 4 drives the connecting block 5 to move, and then drives the connecting rod 8 to move, so that the angle between the connecting rods 8 changes, and the connecting rod 8 finally drives the sliding block 10 to move in the direction away from the electric telescopic rod 4, thereby pushing the sliding door 2 to slide and close. If a human body is accidentally caught by the sliding door 2, after the sliding door 2 contacts the human body, the pressure sensor 6 detects a change in pressure and transmits a signal to the electric telescopic rod 4, thereby controlling the electric telescopic rod 4 to move in the opposite direction, and the sliding door 2 moves in the opposite direction (i.e. opens), and the sliding door 2 is separated from the human body to prevent personal injury; at the same time, when the passenger's fingers are caught between the anti-pinch rubber strips 14, the fingers can be withdrawn immediately. At this time, the anti-pinch rubber strips 14 compress the spring 11 under the pressure of the fingers, so that the anti-pinch rubber strips 14 move toward the sliding door 2, and the passenger's fingers are prevented from being injured under the action of elasticity; if the pressure sensor 6 fails or is damaged, the passenger can also open the sliding door 2 by pressing the emergency stop switch.

[0026] The utility model is described in detail above with reference to the accompanying drawings and embodiments. However, those skilled in the art will appreciate that, without departing from the spirit of the utility model, the specific parameters in the above embodiments may be changed to form a plurality of specific embodiments, which are all within the common variation range of the utility model and will not be described in detail here.

Claims

1. A subway screen door anti-pinch device, comprising a support frame, wherein a sliding door is slidably connected to the support frame, characterized in that: A driving assembly is installed between the support frame and the sliding door. A buffer anti-pinch assembly is provided at one end of the sliding door away from the support frame. The signal transmission module also includes a pressure sensor. The pressure sensor is installed on the driving assembly. When the pressure sensor detects a pressure change, the signal is transmitted to the driving assembly, and the sliding door is controlled to move in the opposite direction through the driving assembly.

2. The subway screen door anti-pinch device according to claim 1, characterized in that: The driving assembly includes an electric telescopic rod, which is provided with two electric telescopic rods, and the fixed ends of the two electric telescopic rods are respectively fixedly installed on the top and bottom of the support frame at one end away from the sliding door. The telescopic ends of the two electric telescopic rods are hinged with at least one group of connecting rods, and the two connecting rods in a group of connecting rods are cross-arranged and hinged in the middle. The end of the last group of connecting rods away from the electric telescopic rod is hinged with a sliding block, and the two sliding blocks are slidably installed on the side of the sliding door away from the buffer anti-pinch assembly, and the pressure sensor is installed at the telescopic end of the electric telescopic rod.

3. The subway screen door anti-pinch device according to claim 1, characterized in that: The buffer anti-pinch assembly includes an anti-pinch rubber strip, a spring and a guide structure. The spring is provided in plurality and is evenly spaced along the height direction of the sliding door. The spring is fixed between the sliding door and the anti-pinch rubber strip. The guide structure is used to guide the movement of the anti-pinch rubber strip.

4. The subway screen door anti-pinch device according to claim 3, characterized in that: The guide structure is provided with multiple groups and is arranged between adjacent springs. The guide structure includes a guide rod and a guide groove. The guide groove is opened on the sliding door. The guide groove is a stepped groove, including a large diameter section and a small diameter section. One end of the guide rod is fixed on the anti-pinch rubber strip, and the other end is a limiting end with a larger diameter. The middle part of the guide rod is slidably installed in the small diameter section, and the limiting end is slidably installed in the large diameter section.

5. The subway screen door anti-pinch device according to claim 2, characterized in that: The connecting rods are provided with two groups, which are hingedly connected to each other. A sliding groove extending along the height direction of the sliding door is provided on the side of the sliding door facing away from the buffer anti-pinch component, and the sliding block is slidably installed in the sliding groove.

6. The subway screen door anti-pinch device according to claim 1, characterized in that: The support frame is a hollow structure, and the drive assembly and the sliding door are both arranged in the support frame. The height of the sliding door is smaller than the height of the support frame. The upper and lower ends of the sliding door on a side away from the buffer anti-pinch assembly are protruding outward with limit blocks. Correspondingly, the upper and lower ends of the support frame on a side away from the drive assembly are protruding inward with limit plates. The limit plates and limit blocks cooperate to limit the sliding door.

7. The subway screen door anti-pinch device according to claim 1, characterized in that: It also includes a warning mechanism, which is arranged on the side wall of the sliding door on the side close to the buffer anti-pinch component. The warning mechanism includes a warning light and a speaker, and is used to remind passengers when the sliding door is closed.

8. The subway screen door anti-pinch device according to claim 1, characterized in that: It also includes an emergency stop switch, which is arranged on the sliding door. The emergency stop switch is connected to the driving component through a signal transmission module circuit. When the emergency stop switch is pressed, the driving component controls the sliding door to move in the reverse direction.

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