Lift car ceiling opening device

Abstract

The utility model discloses a car ceiling opening device which comprises a car roof fixing support, a ceiling fixing support and a rotating shaft arm assembly, the car roof fixing support comprises a supporting plate and a guide plate, the supporting plate is perpendicular to the guide plate, the supporting plate is fixedly connected with an elevator car roof, and a guide groove is formed in the guide plate; the suspended ceiling fixing support is used for being fixedly connected with an elevator suspended ceiling. The rotating shaft arm assembly comprises a rotating shaft arm, a fixed rotating pin, a first movable rotating pin and a second movable rotating pin, the two ends of the rotating shaft arm are the first end and the second end respectively, and the fixed rotating pin penetrates through the first end of the rotating shaft arm to rotationally connect the rotating shaft arm with the car roof fixing support; the first movable rotating pin penetrates through the second end of the rotating shaft arm to rotatably connect the rotating shaft arm with the ceiling fixing support, and the second movable rotating pin penetrates through the guide groove and is installed on the ceiling fixing support. The thickness of the suspended ceiling can be reduced, and a gap between the edge of the suspended ceiling and the car wall is reduced, so that the outer height of the car and the required height of the top layer of the hoistway are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a car ceiling opening device. Background Art

[0002] Elevator ceilings are decorative and functional components that adorn the ceiling of an elevator car. They not only provide lighting, ventilation, and aesthetics, but also address maintenance and safety concerns. Existing elevator ceilings are primarily fixed or removable. Their drawbacks include being thick and heavy, occupying interior space and reducing the height of the car. Furthermore, these ceilings are complex, and installation and removal are cumbersome, making them difficult for a single person to operate and often requiring collaboration.

[0003] Therefore, in order to solve the above problems, it is necessary to develop a car ceiling opening device. Utility Model Content

[0004] In order to overcome the above shortcomings, the purpose of the present invention is to provide a car ceiling opening device that can reduce the thickness of the ceiling and the gap between the ceiling edge and the car wall, thereby reducing the car outer height and the required hoistway top floor height.

[0005] The present application discloses a car ceiling opening device, comprising:

[0006] A car top fixing bracket, the car top fixing bracket comprising a support plate and a guide plate, wherein the support plate and the guide plate are perpendicular to each other, the support plate is fixedly connected to the elevator car top, and a guide groove is provided on the guide plate;

[0007] A ceiling fixing bracket, used for fixed connection with the elevator ceiling, wherein the ceiling fixing bracket is in close contact with the car top fixing bracket;

[0008] The pivot arm assembly includes a pivot arm, a fixed rotating pin, a first movable rotating pin and a second movable rotating pin. The two ends of the pivot arm are respectively a first end and a second end. The fixed rotating pin passes through the first end of the pivot arm to rotationally connect the pivot arm to the car top fixed bracket. The first movable rotating pin passes through the second end of the pivot arm to rotationally connect the pivot arm to the ceiling fixed bracket. The second movable rotating pin passes through the guide groove and is installed on the ceiling fixed bracket.

[0009] The utility model combines a car top fixing bracket, a ceiling fixing bracket, and a pivot arm assembly to form a hinge mechanism capable of fully opening the elevator car ceiling. Specifically, the car top fixing bracket is fixed to the elevator car roof, the ceiling fixing bracket is fixed to the elevator ceiling, and the pivot arm assembly then connects the car top fixing bracket and the ceiling fixing bracket in a hinged manner. When the elevator ceiling is in a closed state, the elevator ceiling can rotate counterclockwise around a first movable rotating pin under the action of the ceiling fixing bracket and the pivot arm assembly until the elevator ceiling is fully opened. The design of the above-mentioned car ceiling opening device reduces the thickness of the ceiling and the gap between the ceiling edge and the car wall during normal operation of the elevator, thereby reducing the car exterior height and the required height of the top floor of the shaft.

[0010] Furthermore, the support plate and the guide plate are integrally formed, which improves the strength of the overall structure.

[0011] Furthermore, the support plate and the elevator car roof are fixedly connected using a threaded connection. This threaded connection offers high mechanical strength, capable of withstanding significant loads and vibrations. This ensures a secure and reliable connection between the support plate and the elevator car roof, increasing structural stability. Furthermore, the threaded connection makes the connection between the support plate and the car roof more compact, reducing the space occupied within the elevator.

[0012] Furthermore, the ceiling fixing bracket is fixedly connected to the elevator ceiling by means of threaded engagement. The threaded connection has good vibration resistance, can effectively prevent loosening and falling off, and increases the reliability of the connection between the ceiling fixing bracket and the elevator ceiling.

[0013] Furthermore, the guide groove is linear. The linear guide groove provides a fixed movement path for the pivot arm assembly and prevents the end of the ceiling fixing bracket connected to the ceiling from colliding with the rear car wall during the opening process of the ceiling, thereby enhancing the stability and safety of the ceiling during opening and closing.

[0014] Furthermore, the first and second ends of the pivot arm are respectively formed with a first guide rod and a second guide rod, and the first guide rod and the second guide rod form an obtuse angle. The obtuse angle design optimizes torque transmission during the pivot arm's rotation, allowing the applied force to more effectively act on the opening and closing of the suspended ceiling.

[0015] Furthermore, when the elevator ceiling is opened, the ceiling bracket rotates 90° counterclockwise around the first movable rotating pin, the second movable rotating pin moves along the guide slot, and the pivot arm simultaneously rotates counterclockwise around the fixed rotating pin relative to the car ceiling bracket before returning to its original position. The synchronized rotation and movement of the ceiling bracket and pivot arm ensures a smooth movement during opening and closing, reducing resistance and friction for smoother operation.

[0016] The beneficial effects of the utility model are:

[0017] (1) The car ceiling opening device of the utility model reduces the thickness of the ceiling and the gap between the ceiling edge and the car wall by using a hinge structure, thereby reducing the car outer height and the required height of the top floor of the hoistway;

[0018] (2) The installation position of the car ceiling is hidden, which increases the aesthetics of the ceiling;

[0019] (3) The ceiling opening device has a simple structure, and a single person can open the ceiling inside the car, which is convenient for later elevator maintenance;

[0020] (4) The car ceiling opening device has an easy-to-open escape window, which is more conducive to escape. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only schematic and are used to help understand the present invention. They do not specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances. In the drawings:

[0022] Figure 1 This is a schematic structural diagram of the car ceiling opening device of the present utility model;

[0023] Figure 2 This is a front view of the car ceiling opening device according to the present invention;

[0024] Figure 3 This is a top view of the car ceiling opening device of the present invention;

[0025] Figure 4 This is a schematic diagram of the ceiling closed state;

[0026] Figure 5 This is a schematic diagram of the suspended ceiling in a half-open state;

[0027] Figure 6 This is a diagram of the suspended ceiling in the fully opened state.

[0028] In the figure: 1. Car roof fixed bracket; 11. Support plate; 12. Guide plate; 121. Guide groove; 2. Ceiling fixed bracket; 3. Rotating shaft arm assembly; 31. Rotating shaft arm; 311. First guide rod; 312. Second guide rod; 32. Fixed rotating pin; 33. First movable rotating pin; 34. Second movable rotating pin. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-6 And specific embodiments are provided to further illustrate the present invention.

[0030] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0031] In order to solve the problem of heavy and thick elevator ceiling design in the prior art, the utility model provides a car ceiling opening device. Figure 1-3 As shown, the car ceiling opening device of the utility model includes a car top fixing bracket 1, a ceiling fixing bracket 2 and a rotating shaft arm assembly 3. The car top fixing bracket 1 is connected to the elevator car roof, and the ceiling fixing bracket 2 is connected to the elevator ceiling. The rotating shaft arm assembly 3 is respectively connected to the car top fixing bracket 1 and the ceiling fixing bracket 2 and is hinged. Through the above structure, when the elevator is operating normally, the thickness of the ceiling is reduced, and the gap between the ceiling edge and the car wall is reduced, thereby reducing the outer height of the car and the required top floor height of the shaft; the hinge rotation opening method is also more labor-saving, and can be opened by one person, reducing the difficulty of later maintenance.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, the car top fixing bracket 1 includes a support plate 11 and a guide plate 12. The support plate 11 is fixed to the car top via a threaded connection. The guide plate 12 and the support plate 11 are integrally formed and perpendicular to each other, thereby increasing the strength of the car top fixing bracket 1. The pivot arm assembly 3 connects the guide plate 12 and the ceiling fixing bracket 2, respectively, forming a hinge structure. The pivot arm assembly 3 includes a pivot arm 31, a fixed rotation pin 32, a first movable rotation pin 33, and a second movable rotation pin 34. The pivot arm 31 has a first end and a second end. The first end is rotationally connected to the car top fixing bracket 1 via the fixed rotation pin 32, and the second end is rotationally connected to the ceiling fixing bracket 2 via the first movable rotation pin 33. The guide plate 12 is also provided with a guide slot 121. The second movable rotation pin 34 passes through the guide slot 121 and is then mounted on the ceiling fixing bracket 2. The second movable rotation pin 34 can be fixedly or rotationally mounted on the ceiling fixing bracket 2.

[0033] When the ceiling is in the closed state, the ceiling is rotated counterclockwise. At this time, the ceiling fixing bracket 2 rotates counterclockwise around the first movable rotating pin 33 until the ceiling is fully opened. The second movable rotating pin 34 also moves along the guide groove 121 to provide guidance for the car ceiling opening device to ensure the stability of the device.

[0034] In this embodiment, Figure 1 As shown, the support plate 11 and the elevator car roof are fixedly connected by means of threaded fitting, and the ceiling fixing bracket 2 and the elevator ceiling are fixedly connected by means of threaded fitting. The threaded connection has high mechanical strength, ensuring the firmness and safety of the connection. In addition, the threaded connection method does not require additional support or fixing structure, so that the thickness of the ceiling can be reduced, and the gap between the ceiling edge and the car wall is further reduced, thereby reducing the occupation of the internal space of the elevator.

[0035] In this embodiment, Figure 1 As shown, the guide groove 121 is a linear track. Regardless of whether the ceiling is opened or closed, the second movable rotating pin 34 moves along the guide groove 121 to prevent the ceiling from lacking the guidance of the guide groove 121 during the opening process. The end of the ceiling fixing bracket 2 connected to the ceiling will collide with the car wall behind it. Therefore, the existence of the guide groove 121 provides good stability for the device.

[0036] In this embodiment, Figure 2 As shown, the first end and the second end of the pivot arm 31 are respectively the first guide rod 311 and the second guide rod 312. There is an angle between the first guide rod 311 and the second guide rod 312, and the intersecting angle is an obtuse angle. The above-mentioned obtuse angle design optimizes the torque transmission of the pivot arm 31 during the rotation process, effectively disperses the stress generated by the pivot arm 31 during the rotation process, makes the stress distribution more uniform, and improves the service life of the pivot arm 31.

[0037] In this embodiment, Figure 2 、 Figure 4 、 Figure 5 and Figure 6 As shown, during the process of opening the elevator ceiling, the ceiling fixing bracket 2 rotates 90° counterclockwise around the first movable rotating pin 33. Since the two ends of the rotating shaft arm 31 are respectively connected to the first movable rotating pin 33 and the fixed rotating pin 32, under the rotation action of the ceiling fixing bracket 2, the first end of the rotating shaft arm 31 also rotates a certain angle counterclockwise around the fixed rotating pin 32. After the ceiling is fully opened, the position of the rotating shaft arm 31 is restored.

[0038] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A car ceiling opening device, characterized in that: include A car top fixing bracket, the car top fixing bracket comprising a support plate and a guide plate, wherein the support plate and the guide plate are perpendicular to each other, the support plate is fixedly connected to the elevator car top, and a guide groove is provided on the guide plate; A ceiling fixing bracket, used for fixed connection with the elevator ceiling, wherein the ceiling fixing bracket is in close contact with the car top fixing bracket; The pivot arm assembly includes a pivot arm, a fixed rotating pin, a first movable rotating pin and a second movable rotating pin. The two ends of the pivot arm are respectively a first end and a second end. The fixed rotating pin passes through the first end of the pivot arm to rotationally connect the pivot arm to the car top fixed bracket. The first movable rotating pin passes through the second end of the pivot arm to rotationally connect the pivot arm to the ceiling fixed bracket. The second movable rotating pin passes through the guide groove and is installed on the ceiling fixed bracket.

2. The car ceiling opening device according to claim 1, characterized in that: The support plate and the guide plate are an integrally formed structure.

3. The car ceiling opening device according to claim 1, characterized in that: The support plate and the elevator car top are fixedly connected by means of threaded fitting.

4. The car ceiling opening device according to claim 1, characterized in that: The ceiling fixing bracket is fixedly connected to the elevator ceiling by using threaded fitting.

5. The car ceiling opening device according to claim 1, characterized in that: The guide groove is linear.

6. The car ceiling opening device according to claim 1, characterized in that: The first end and the second end of the rotating shaft arm are respectively a first guide rod and a second guide rod, and the first guide rod and the second guide rod form an angle, and the angle is an obtuse angle.

7. The car ceiling opening device according to claim 1, characterized in that: When the elevator ceiling is opened, the ceiling fixing bracket rotates 90 degrees counterclockwise around the first movable rotating pin, the second movable rotating pin moves along the guide groove, and at the same time the shaft arm rotates counterclockwise around the fixed rotating pin relative to the car top fixing bracket and then recovers.

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