Transmission mechanism of electric shielding door

Abstract

The utility model discloses an electric shielding door transmission mechanism, which belongs to the technical field of shielding doors, and comprises a door frame main body, a door leaf main body and a driving assembly, the door frame main body comprises a mounting frame and a shielding frame, the door frame main body is provided with a plurality of shielding reeds along the direction of the shielding frame body, and one side of the mounting frame is provided with a plurality of limiting pulleys. A plurality of communicating openings are correspondingly formed in the positions, opposite to the limiting pulleys, of the door leaf body. The driving assembly comprises a driving source, a plurality of locking rods and vertical connecting rods, and the multiple locking rods penetrate through the corresponding communicating openings correspondingly and are fixedly connected through the vertical connecting rods. The door frame body can be locked in the closing direction through cooperation of the lock rod and the limiting pulley, and then enough driving force can be provided for compressing the shielding reed. The gap between the door frame body and the door leaf body can be filled through deformation of the shielding reed, electromagnetic radiation is effectively prevented from leaking from the gap, and the shielding performance and use safety of the shielding door are improved.

Description

Technical Field

[0001] This utility model belongs to the field of shielded door technology, specifically an electric shielded door transmission mechanism. Background Technology

[0002] Electromagnetic shielding doors are access control systems that effectively shield electromagnetic radiation. Based on electromagnetic shielding materials and advanced sealing design, they prevent the propagation and intrusion of electromagnetic waves. Electromagnetic shielding doors not only block external electromagnetic radiation but also prevent electromagnetic radiation from internal equipment from interfering with the external environment. This is crucial for applications requiring precise electromagnetic environment control, such as scientific experiments, wireless communication testing, electronic equipment development, and medical examinations.

[0003] Existing shielding doors only provide shielding at the door body, while the gap between the door body and the door frame poses a risk of electromagnetic radiation leakage. Utility Model Content

[0004] The purpose of this utility model is to provide an electric shielding door transmission mechanism to solve the problems mentioned in the prior art.

[0005] An electric platform screen door transmission mechanism is provided, comprising:

[0006] The door frame body includes a mounting frame and a shielding frame. The door frame body is provided with a number of shielding springs along the direction of the shielding frame. A hinge is provided on one side of the mounting frame. A number of limiting pulleys are provided on the side of the mounting frame opposite to the hinge.

[0007] The door leaf body has one side hinged to the mounting frame via a hinge, and the door leaf body has several communication openings corresponding to the relative positions of several limiting pulleys.

[0008] The drive assembly includes a drive source, several locking rods, and a vertical connecting rod. The drive assembly is located inside the door body. The locking rods pass through corresponding communication openings and are fixedly connected by the vertical connecting rods. The vertical connecting rods are fixedly connected to the output end of the drive source.

[0009] Furthermore, the drive assembly also includes a horizontal connecting rod, a reversing connecting rod, a pressing rod assembly, and a side guide rail. The horizontal connecting rod is fixedly connected to the vertical connecting rod. One end of the reversing connecting rod is hinged to the horizontal connecting rod, and the other end of the reversing connecting rod is hinged to the pressing rod assembly. The side guide rail is located on both sides inside the door body. The pressing rod assembly is slidably connected to the side guide rail. A shielding spring is provided at the bottom of the pressing rod assembly.

[0010] Furthermore, the shielding spring includes a rectangular square tube and a compression spring, one end of which is fixedly continuous with the rectangular square tube, and the other end of which is in contact with the rectangular square tube.

[0011] Furthermore, the compression surface of the compression spring has a triangular structure.

[0012] Furthermore, the compression surface of the compression spring has an arc-shaped structure.

[0013] Furthermore, a sensor switch is provided on the top of the door frame body.

[0014] Furthermore, the drive source is a linear motor.

[0015] Furthermore, the door panel body is also equipped with a safety slide rail and two limit pins. The drive source is slidably connected to the safety slide rail via a slider, and the two limit pins are detachably connected to both ends of the slider.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The door frame body can be locked in the closing direction through the cooperation of the locking rod and the limiting pulley, thereby providing sufficient driving force to compress the shielding spring. The deformation of the shielding spring can fill the gap between the door frame body and the door leaf body, effectively preventing electromagnetic radiation from leaking out of the gap, thus improving the shielding performance and safety of the shielded door. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of an electric platform screen door transmission mechanism.

[0020] Figure 2 for Figure 1 Schematic diagram of the cross section of AA;

[0021] Figure 3 This is a side view of an electric platform screen door transmission mechanism;

[0022] Figure 4 for Figure 3 Enlarged view of region B in the middle;

[0023] Figure 5 This is a schematic diagram of the operation of an electric platform screen door transmission mechanism after the door is closed.

[0024] Figure 6 This is a schematic diagram of the operation of an electric platform screen door transmission mechanism before closing.

[0025] Figure 7This is a schematic diagram of the structure of the shielding spring provided by the present invention.

[0026] In the diagram: 1. Door frame body; 11. Mounting frame; 12. Shielding frame; 13. Shielding spring; 131. Rectangular tube; 132. Compression spring; 14. Limiting pulley; 15. Hinge; 16. Induction switch; 2. Door leaf body; 21. Connecting port; 22. Safety slide rail; 23. Limiting pin; 3. Drive assembly; 31. Drive source; 32. Locking rod; 33. Vertical connecting rod; 34. Horizontal connecting rod; 35. Reversing connecting rod; 36. Downward pressure rod assembly; 37. Side guide rail. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-7 As shown in the embodiment of this utility model, an electric shielded door transmission mechanism includes a door frame body 1, a door leaf body 2, and a drive assembly 3. The door frame body 1 includes a mounting frame 11 and a shielding frame 12. A plurality of shielding springs 13 are arranged along the frame direction of the shielding frame 12. A hinge 15 is provided on one side of the mounting frame 11, and a plurality of limiting pulleys 14 are provided on the side of the mounting frame 11 opposite to the hinge 15. One side of the door leaf body 2 is hinged to the mounting frame 11 via the hinge 15. A plurality of connecting openings 21 are correspondingly provided between the door leaf body 2 and the plurality of limiting pulleys 14. The drive assembly 3 includes a drive source 31, a plurality of locking rods 32, and a vertical connecting rod 33. The drive assembly 3 is disposed inside the door leaf body 2. The plurality of locking rods 32 pass through the corresponding connecting openings 21 and are fixedly connected by the vertical connecting rods 33. The vertical connecting rods 33 are fixedly connected to the output end of the drive source 31.

[0030] The drive source 31 can drive the vertical connecting rod 33 to perform linear reciprocating motion, which in turn drives several locking rods 32 to perform reciprocating motion, allowing the locking rods 32 to move through the connecting opening 21. When the door is opened, the locking rods 32 retract from the connecting opening 21, at which point the locking rods 32 lose contact with the limiting pulley 14, and the door body 2 is pushed open by the elastic recovery action of the shielding spring 13, which then returns to its original position. When the door is closed, the locking rods 32 extend from the connecting opening 21, contact the limiting pulley 14, and under the rotation of the limiting pulley 14, drive the door body 2 to move in the door closing direction. The shielding spring 13 deforms under the compression of the door body 2 and fills the gap between the door body 2 and the door frame body 1, achieving the shielding effect.

[0031] The drive assembly 3 also includes a horizontal connecting rod 34, a reversing connecting rod 35, a pressing rod assembly 36, and a side guide rail 37. The horizontal connecting rod 34 is fixedly connected to the vertical connecting rod 33. One end of the reversing connecting rod 35 is hinged to the horizontal connecting rod 34, and the other end of the reversing connecting rod 35 is hinged to the pressing rod assembly 36. The side guide rail 37 is located on both sides inside the door body 2. The pressing rod assembly 36 is slidably connected to the side guide rail 37. A shielding spring 13 is provided at the bottom of the pressing rod assembly 36.

[0032] If the bottom gap between the door leaf body 2 and the door frame body 1 needs to be filled by the shielding spring 13, a shielding frame 12 needs to be set at the bottom to install the shielding spring 13. This will raise the bottom threshold height, making walking very inconvenient. Under the limiting action of the side guide rail 37, the downward pressure rod assembly 36 can only slide vertically along the direction of the side guide rail 37. Therefore, when the horizontal connecting rod 34 is reciprocating, the horizontal connecting rod 34 and the reversing connecting rod 35 will rotate relative to each other, and the reversing connecting rod 35 and the downward pressure rod assembly 36 will also rotate relative to each other. Thus, through the transmission action of the reversing connecting rod 35, the horizontal movement of the horizontal connecting rod 34 can be converted into the vertical sliding of the downward pressure rod assembly 36.

[0033] When the door is closed, the drive source 31 drives the horizontal connecting rod 34 to move towards the connecting port 21. Since the horizontal connecting rod 34 does not have a degree of rotational freedom, when the horizontal connecting rod 34 moves, the reversing connecting rod 35 will rotate relative to the hinge end of the horizontal connecting rod 34. The reversing connecting rod 35 gradually pushes the pressure rod assembly 36 downward, compressing and deforming the shielding spring 13 at the bottom of the pressure rod assembly 36, thus achieving a seal of the bottom gap without raising the threshold height.

[0034] The shielding spring 13 includes a rectangular square tube 131 and a compression spring 132. One end of the compression spring 132 is fixedly connected to the rectangular square tube 131, and the other end of the compression spring 132 is in contact with the rectangular square tube 131. The rectangular square tube 131 is used to transmit the pressure given by the door leaf body 2 or the pressure rod assembly 36 to the compression spring 132, improving the uniformity of force on the compression spring 132 and preventing unnecessary deformation of the compression spring 132. The compression spring 132 is a special-shaped spring with large elastic deformation performance. It undergoes elastic deformation after compression and recovers its deformation after the pressure is released, thus achieving a seal between the gaps.

[0035] The compression surface of the compression spring 132 is a triangular or arc-shaped structure. This structure can reduce the contact area between the compression surface of the compression spring 132 and the door frame body 1 or the door leaf body 2, making the sliding of the compression surface smoother during deformation and reducing the noise during friction.

[0036] A sensor switch 16 is installed on the top of the door frame body 1. When the door leaf body 2 is closed, and the door leaf body 2 is moved to a certain position, the top of the door leaf body 2 touches the sensor switch 16 on the top of the door frame body 1. The sensor switch 16 sends out a closing signal, and the drive source 31 starts to work to realize automatic control.

[0037] The drive source 31 is a linear motor. The speed and position of a linear motor can be precisely adjusted via current control, enabling high-precision and high-speed motion. Linear motors typically have a very fast response time, starting and stopping within milliseconds. In contrast, pneumatic and hydraulic cylinders have much longer response times, typically ranging from tens to hundreds of milliseconds. Linear motors generally have higher power density, providing greater force and acceleration. Pneumatic and hydraulic cylinders typically provide greater force but lower acceleration. Therefore, linear motors are more suitable for door lock applications requiring high precision, high speed, and rapid response.

[0038] The door body 2 also includes a safety slide rail 22 and two limit pins 23. The drive source 31 is slidably connected to the safety slide rail 22 via a slider, and the two limit pins 23 are detachably connected to both ends of the slider. Since the drive source 31 is electrically driven, it is possible that it will malfunction due to power failure, short circuit, or damage. In this case, the locking rod 32 will extend out of the communication port 21 and contact the limit pulley 14, preventing the door from opening. Under normal circumstances, the drive source 31 is immobilized by the two limit pins 23. In such a situation, the two limit pins 23 can be pulled out, allowing the drive source 31 to slide on the safety slide rail 22, thus manually opening the door.

[0039] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. An electrically powered barrier door drive mechanism characterised in that, Include: Door frame body (1), including installation frame (11) and shielding frame (12), the door frame body (1) is provided with a plurality of shielding spring leaves (13) along the shielding frame (12) frame body direction, the installation frame (11) is provided with a hinge piece (15) on one side, the installation frame (11) is provided with a plurality of limit pulleys (14) on the side opposite to the hinge piece (15); Door leaf body (2), one side of the door leaf body (2) is hinged with the installation frame (11) through the hinge piece (15), and a plurality of communication ports (21) are formed in the door leaf body (2) corresponding to the relative positions of the plurality of limit pulleys (14); Drive assembly (3), including drive source (31), a plurality of lock rods (32) and vertical connecting rod (33), the drive assembly (3) is arranged in the interior of the door leaf body (2), a plurality of the lock rods (32) are respectively penetrated through the corresponding communication ports (21), a plurality of the lock rods (32) are fixedly connected through the vertical connecting rod (33), and the vertical connecting rod (33) is fixedly connected with the output end of the drive source (31).

2. A motorized shield door drive mechanism according to claim 1, wherein, The drive assembly (3) further includes horizontal connecting rod (34), reversing connecting rod (35), down rod assembly (36) and lateral guide rail (37), the horizontal connecting rod (34) is fixedly connected with the vertical connecting rod (33), one end of the reversing connecting rod (35) is hinged with the horizontal connecting rod (34), the other end of the reversing connecting rod (35) is hinged with the down rod assembly (36), the lateral guide rail (37) is arranged on both sides of the interior of the door leaf body (2), the down rod assembly (36) is slidably connected with the lateral guide rail (37), and the bottom of the down rod assembly (36) is provided with the shielding spring leaf (13).

3. A motorised screen door transmission mechanism as claimed in claim 2 wherein, The shielding spring leaf (13) includes a rectangular square tube (131) and a compression spring (132), one end of the compression spring (132) is fixedly connected with the rectangular square tube (131), and the other end of the compression spring (132) is in contact with the rectangular square tube (131).

4. A motorised screen door transmission mechanism as claimed in claim 3 wherein, The compression surface of the compression spring (132) is a triangular structure.

5. A motorized shield door drive mechanism as defined in claim 3 wherein, The compression surface of the compression spring (132) is a circular arc structure.

6. A motorized shield door drive mechanism according to any one of claims 1 to 5, characterized in that The top of the door frame body (1) is provided with an induction switch (16).

7. A motorized shield door drive mechanism according to any one of claims 1-5, characterized in that, The drive source (31) is a linear motor.

8. A motorized shield door drive mechanism according to any one of claims 1-5, characterized in that The door leaf body (2) is further provided with a safety sliding rail (22) and two limit bolts (23), the drive source (31) is slidably connected with the safety sliding rail (22) through a sliding block, and the two limit bolts (23) are detachably connected to two ends of the sliding block.

Images