Middle-opening type car door with anti-collision protection function

Abstract

The utility model relates to the technical field of elevators, in particular to a center-opening type car door with an anti-collision protection function, which comprises car door plates, a door opener and a door slider, flexible anti-collision strips are detachably clamped and fixed on the side surfaces of the two car door plates, a buffer is fixed on the side surface of one car door plate, and the buffer is fixed on the side surface of the other car door plate. The buffer comprises a cylinder sleeve, a piston rod, a piston, a buffer spring, an end cover and a check ring, the piston is slidably embedded in the cylinder sleeve, the piston rod is fixedly connected with the piston, the outer end of the piston rod extends out of the cylinder sleeve, a spring seat is fixed to the inner end of the piston rod, the end cover is fixed to the outer end of the piston rod in a sleeving mode, and the check ring is embedded in the inner wall of an outer port of the cylinder sleeve and abuts against the end cover. A noise reduction cavity is defined by a plurality of sound insulation plates in the car door plate provided with the buffer, the inner end of the cylinder sleeve extends into the noise reduction cavity, and a communication opening is formed in the inner end of the cylinder sleeve. Therefore, the sealing performance of the lift car can be improved, the impact force of collision of the car door plate can be reduced, the riding comfort is improved, and the service life of the car door plate is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators, and relates to a center-opening car door with an anti-collision protection function. Background Technique

[0002] The center-opening car door is a common type of elevator door, which means that the elevator door panels are separated from the middle to both sides. Generally, it consists of two door panels, one of which is the active door leaf and the other is the passive door leaf. The movement of one door drives the movement of the other door to realize the opening or closing of the door. The center-opening car door has the advantage of fast door opening and is suitable for working conditions with high door opening frequencies. However, when the door is opened and closed, the door sheet metals directly collide and contact with each other, which will generate noise and vibration, and there will be a certain gap between the door sheet metals, resulting in light leakage.

[0003] For example, the Chinese utility model patent with the application number CN2016214394516 discloses an anti-collision and light-leakage-proof elevator car door device, which includes a pair of car door panels arranged oppositely. An opening machine for moving the car door panels left and right is arranged at the top of the car door panels. A door slider is arranged at the bottom of the car door panels, and the door slider can slide along the sill arranged below the car door panels. A mutually fitting bending part is arranged at one end of the pair of car door panels that are close to each other, and rubber door nails are also arranged on the bending part.

[0004] However, the above-mentioned prior art has the problem of poor car sealing effect, resulting in the fact that the dirty gas and landing noise in the hoistway are easily transmitted into the car through the door gap, affecting the riding comfort. The above-mentioned prior art also uses rubber door nails to play a buffering role during the closing process of the car door panel, but this rubber door nail structure has a poor effect in terms of the anti-vibration and buffering performance of the car door panel, and there is a problem of low service life of the car door panel. Therefore, it needs to be further improved and enhanced. Content of the Utility Model

[0005] The purpose of the utility model is to provide a center-opening car door with an anti-collision protection function in view of the above problems existing in the prior art.

[0006] The object of the utility model can be achieved by the following technical solutions: A center-opening car door with an anti-collision protection function, including two car door panels symmetrically arranged on the left and right. A door opener for horizontally moving it is provided at the top of the car door panel. A door slider is provided at the bottom of the car door panel, and the door slider can slide along the sill provided below the car door panel. Flexible anti-collision strips are detachably clamped and fixed on the side surfaces of the two car door panels that cooperate with each other for opening and closing, and a buffer is fixed on the side surface of one of the car door panels. The buffer includes a cylinder sleeve, a piston rod, a piston, a buffer spring, an end cover and a retaining ring. The piston is slidably fitted in the cylinder sleeve. The piston rod is fixedly connected to the piston. The outer end of the piston rod extends outside the cylinder sleeve, and a spring seat for fixing the buffer spring is fixed at its inner end. The lower end of the buffer spring abuts against the inner wall of the cylinder sleeve. The end cover is sleeved and fixed at the outer end of the piston rod. The retaining ring is fitted in the inner wall of the outer port of the cylinder sleeve and abuts against the end cover. A noise reduction cavity is formed by enclosing a number of sound insulation boards inside the car door panel where the buffer is installed. The inner end of the cylinder sleeve extends into the noise reduction cavity, and a communication port is opened at the inner end of the cylinder sleeve to communicate its interior with the noise reduction cavity.

[0007] Preferably, the buffer is located at the top of one of the car door panels.

[0008] Preferably, a first sealing ring that fits with the inner wall of the cylinder sleeve is nested outside the piston.

[0009] Preferably, an annular lubricating groove is provided in the circumferential direction of the piston. A sponge is sleeved in the lubricating groove, and a second sealing ring is sleeved outside the sponge.

[0010] Preferably, a sheath is sleeved outside the piston rod.

[0011] Preferably, the flexible anti-collision strip is made of elastic rubber material. There are a number of buffer cavities that can deform inside the flexible anti-collision strip. A limiting groove for cooperating with the sheath and allowing its end to be inserted is opened on the side surface of the flexible anti-collision strip.

[0012] Preferably, a number of polygonal sound absorption holes are opened on the sound insulation board. The two ends of the sound absorption holes are open and are constricted from the outside to the inside. The inner wall of the sound absorption hole is rough.

[0013] Preferably, an infrared light curtain is fixed along the vertical direction on the side surface of the car door panel.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] The sealing effect of the car is good, effectively isolating the dirty gas in the hoistway and the noise in the landing station, and improving the comfort of taking the elevator; the impact force brought by the collision when the car door panel closes is effectively reduced through the buffer and the flexible anti-collision strip. The noise reduction cavity can effectively reduce the mechanical noise emitted by the buffer and reduce the vibration of the car door panel, improving the service life of the car door panel. Brief Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0017] Figure 2 is a schematic diagram of the sectional structure at the sill.

[0018] Figure 3 is a schematic diagram of the transverse sectional structure of the car door panel.

[0019] Figure 4 is a schematic diagram of the transverse sectional structure at the buffer on the car door panel.

[0020] Figure 5 is Figure 4 an enlarged schematic diagram of the buffer at position A.

[0021] In the figure, 1. car door panel; 11. noise reduction cavity; 2. door opener; 3. door slider; 4. sill; 5. flexible anti-collision strip; 51. buffer cavity; 52. limit groove; 6. buffer; 61. cylinder sleeve; 611. communication port; 62. piston rod; 621. sheath; 63. piston; 631. first sealing ring; 632. lubricating groove; 633. sponge; 634. second sealing ring; 64. buffer spring; 65. end cover; 66. retaining ring; 67. spring seat; 7. sound insulation board; 71. sound absorption hole; 8. infrared light curtain. Detailed Description of the Preferred Embodiments

[0022] The following are specific embodiments of the present utility model in combination with the accompanying drawings to further describe the technical solutions of the present utility model, but the present utility model is not limited to these embodiments.

[0023] Such as Figures 1 - 5As shown in the figure, a center-opening car door with anti-collision protection function includes two car door panels 1 symmetrically arranged on the left and right. A door opener 2 for horizontally moving the car door panels 1 is provided at the top of the car door panels 1. A door slider 3 is provided at the bottom of the car door panels 1, and the door slider 3 can slide along a sill 4 provided below the car door panels 1. Flexible anti-collision strips 5 are detachably and fixedly clamped on the mutually opening and closing sides of the two car door panels 1, and a buffer 6 is fixed on the side of one of the car door panels 1. The buffer 6 includes a cylinder sleeve 61, a piston rod 62, a piston 63, a buffer spring 64, an end cover 65 and a retaining ring 66. The piston 63 is slidably fitted in the cylinder sleeve 61. The piston rod 62 is fixedly connected to the piston 63. The outer end of the piston rod 62 extends outside the cylinder sleeve 61, and a spring seat 67 for fixing the buffer spring 64 is fixed at its inner end. The lower end of the buffer spring 64 abuts against the inner wall of the cylinder sleeve 61. The end cover 65 is sleeved and fixed on the outer end of the piston rod 62. The retaining ring 66 is fitted in the inner wall of the outer port of the cylinder sleeve 61 and abuts against the end cover 65. A noise reduction cavity 11 is formed by enclosing a plurality of sound insulation boards 7 inside the car door panel 1 where the buffer 6 is installed. The inner end of the cylinder sleeve 61 extends into the noise reduction cavity 11, and a communication port 611 for communicating its interior with the noise reduction cavity 11 is opened at the inner end of the cylinder sleeve 61.

[0024] The principle of the present utility model in actual work: When the door opener 2 drives the two car door panels 1 to slide close to each other for closing, first, the flexible anti-collision strip 5 abuts against the end of the piston rod 62. The piston rod 62 pushes the piston 63 to slide along the inner wall of the cylinder sleeve 61 and compresses the buffer spring 64 until the flexible anti-collision strips 5 on the mutually opening and closing sides of the two car door panels 1 are in contact. The buffer 6 can absorb most of the impact force brought by the collision of the car door panel 1, and the flexible anti-collision strip 5 is used to absorb the remaining impact force of the collision, improving the service life of the car door panel 1. Using the principle that noise is transmitted through air vibration, the mechanical noise generated by the buffer 6 is guided into the noise reduction cavity 11 through the communication port 611 and effectively absorbed by the sound insulation boards 7, further improving the comfort of taking the elevator.

[0025] Furthermore, the buffer 6 is located at the top of one of the car door panels 1. The outer end of the piston rod 62 on the buffer 6 extends outside the cylinder sleeve 61. The buffer 6 is arranged at the top of the car door panel 1 to prevent interference with the people entering and leaving the elevator.

[0026] Furthermore, as Figure 5 shown, a first sealing ring 631 that fits with the inner wall of the cylinder sleeve 61 is nested outside the piston 63. The first sealing ring 631 is used to prevent liquid, gas or contaminants from entering the interior of the cylinder sleeve 61, balance the internal pressure of the cylinder sleeve 61, and reduce the wear of the piston 63.

[0027] The piston 63 is circumferentially provided with an annular lubricating groove 632, in which a sponge 633 is sleeved, and a second sealing ring 634 is sleeved outside the sponge 633. The sponge 633 is used to adsorb lubricating oil or grease to ensure the smooth movement of the piston 63, and the second sealing ring 634 is used to fix the sponge 633 and maintain the stability of the sponge 633 when following the movement of the piston 63.

[0028] A sheath 621 is sleeved outside the piston rod 62. The outer end of the piston rod 62 is the most frequently contacted part, and the sheath 621 is used to prevent the outer end of the piston rod 62 from being worn and corroded, thereby increasing the service life of the piston rod 62.

[0029] The flexible anti-collision strip 5 is made of elastic rubber material. The flexible anti-collision strip 5 has a number of buffer cavities 51 that can deform. A limiting groove 52 is formed on the side of the flexible anti-collision strip 5 and is adapted to the sheath 621 for the end thereof to be inserted. When the two car door panels 1 are closed instantaneously, the buffer cavities 51 will deform to reduce the impact force of the impact of the car door panel 1. The rubber material is elastic and can absorb part of the impact force and reset after the impact force disappears, which can effectively reduce the damage to the door panel and passengers. The limiting groove 52 is used to limit the radial movement of the sheath 621 when it is inserted into it.

[0030] Further, as Figure 4 shown, a number of polygonal sound absorption holes 71 are formed in the sound insulation board 7. The two ends of the sound absorption holes 71 are open and are constricted from the outside to the inside, which helps the mechanical noise generated by the buffer 6 to be conducted into the sound absorption holes 71. The inner wall of the sound absorption holes 71 is rough. The vibration of the air caused by the propagation of the noise and the friction with the rough inner wall of the sound absorption holes 71 can effectively improve the noise reduction effect.

[0031] Further, as Figure 1 shown, an infrared light curtain 8 is fixedly arranged along the vertical direction on the side of the car door panel 1. By installing the infrared light curtain 8, the spatial change around the car door panel 1 is monitored in real time. Once it is detected that an object approaches or contacts the car door panel 1, the sensor will immediately trigger the safety mechanism to stop the movement of the car door panel 1 or open it in the reverse direction, thereby avoiding collisions.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A center-split car door with anti-collision protection function, comprising two car door panels (1) arranged symmetrically on the left and right, a door opener (2) for moving the car door panels (1) on the top, a door slider (3) on the bottom, the door slider (3) being able to slide along a sill (4) arranged below the car door panels (1), characterized in that: A flexible anti-collision strip (5) is detachably embedded and fixed on the sides of the two car door panels (1) that are mutually opened and closed, and a buffer (6) is fixed on the side of one of the car door panels (1). The buffer (6) comprises a cylinder sleeve (61), a piston rod (62), a piston (63), a buffer spring (64), an end cover (65) and a retaining ring (66). The piston (63) is slidably embedded in the cylinder sleeve (61), the piston rod (62) is fixedly connected to the piston (63), the outer end of the piston rod (62) extends to the outside of the cylinder sleeve (61), and the inner end of the piston rod (62) is fixed with a spring for holding the piston (65) in place. A spring seat (67) is fixed to a buffer spring (64), the lower end of the buffer spring (64) abuts against the inner wall of the cylinder sleeve (61), the end cover (65) is sleeved and fixed on the outer end of the piston rod (62), the retaining ring (66) is embedded in the inner wall of the outer end of the cylinder sleeve (61) and abuts against the end cover (65), a noise reduction chamber (11) is formed in the car door panel (1) on which the buffer (6) is installed, and a plurality of sound insulation panels (7) are used to enclose the interior of the cylinder sleeve (61) to form a noise reduction chamber (11), the inner end of the cylinder sleeve (61) extends into the noise reduction chamber (11), and a connecting port (611) is opened at the inner end of the cylinder sleeve (61) to connect the interior of the cylinder sleeve with the noise reduction chamber (11).

2. The center-split car door with anti-collision protection function according to claim 1, characterized in that: The buffer (6) is located on the top of one of the car door panels (1).

3. A center-split car door with anti-collision protection function according to any one of claims 1 or 2, characterized in that: A first sealing ring (631) is nested outside the piston (63) and is in contact with the inner wall of the cylinder sleeve (61).

4. The center-split car door with anti-collision protection function according to claim 3 is characterized in that: The piston (63) is circumferentially provided with an annular lubrication groove (632), a sponge (633) is sleeved in the lubrication groove (632), and a second sealing ring (634) is clamped outside the sponge (633).

5. The center-split car door with anti-collision protection function according to claim 4, characterized in that: The piston rod (62) is provided with a sheath (621) on its outer shell.

6. The center-split car door with anti-collision protection function according to claim 5, characterized in that: The flexible anti-collision strip (5) is made of elastic rubber material, and has a plurality of buffer cavities (51) capable of deformation. The side of the flexible anti-collision strip (5) is provided with a limiting groove (52) which cooperates with the sheath (621) for the end thereof to be inserted.

7. The center-split car door with anti-collision protection function according to claim 1, characterized in that: The sound insulation board (7) is provided with a plurality of polygonal sound-absorbing holes (71), the openings at both ends of the sound-absorbing holes (71) are closed from the outside to the inside, and the inner walls of the sound-absorbing holes (71) are rough.

8. The center-split car door with anti-collision protection function according to claim 1, characterized in that: An infrared light curtain (8) is vertically fixed to the side of the car door panel (1).

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