Elevator double-sided folding car door

Abstract

The present invention provides an elevator double-sided folding car door, which relates to the field of elevators, and comprises two groups of left-right symmetrical folding door bodies and an electric drive system. One side of the two groups of folding door bodies is hinged to the vertical frame of the car. When the car door is opened, the electric drive system drives the two groups of folding door bodies to fold and close to the two sides of the car. The door machine width of this patent is not greater than the car width, and the limited shaft space can be fully utilized. The folding car door comprises two groups of left-right symmetrical folding door bodies, so the width of a single group of folding door bodies is relatively small. When the folding car door is opened, the electric drive system drives the two groups of folding door bodies, eliminating the need for passengers to manually open and close the car door. Moreover, the extension range of the single group of folding door bodies is located on both sides of the car, and the extension range is small, thereby effectively improving passenger comfort.

Description

Technical Field

[0001] The invention relates to the field of elevators, and in particular to a double-sided folding elevator door. Background Art

[0002] The existing elevator car doors are mostly opened by side-opening automatic doors and center-opening automatic doors. However, traditional elevator car doors occupy the shaft space, and the door machine width is greater than the car width. At present, in order to maximize the indoor space, users have increasingly smaller requirements for the shaft size of home elevators, resulting in a smaller car size and difficulty in fully utilizing the shaft space.

[0003] In order to partially solve this technical problem, patent publication number CN205099170U, patent name is a double-leaf manual folding car door device for elevators, the invention patent discloses a double-leaf manual folding car door device for elevators, including a car door, the car door is composed of a hanging wheel door and a rotating shaft door hinged in parallel, a door hanging rail is provided at the upper end of the car entrance and exit, the upper end of the outer side of the rotating shaft door is rotatably connected to the door hanging rail through the upper door shaft, the lower end of the outer side of the rotating shaft door is rotatably connected to the sill slide groove through the lower door shaft, the upper end of the outer side of the hanging wheel door is fixed with a door hanging wheel, and the outer side of the hanging wheel door is fixed with a door hanging wheel. A guide shaft is fixed at the lower end of the side, an electromagnetic lock and a door-closed verification switch are installed at the bottom end of the front side of the door head beam, and an electromagnetic lock suction plate is installed on the front side of the upper end of the rotating shaft door. After the door is closed, the door-closed verification switch is turned on, the electromagnetic lock and the electromagnetic lock suction plate are attracted, and the safety circuit of the elevator is connected, and the elevator can run. However, the existing patented technology requires manual opening and closing of the car door, and the car door can only be folded on one side, which is not only unsafe, but also the car door needs to be folded and extended into the car over a large range during the folding process, making the car with limited space more crowded and the experience is poor. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide an elevator double-sided folding car door, which efficiently utilizes the shaft space and is driven by an electric drive system, eliminating the need for manual opening and closing of the car door, thereby improving the passenger experience.

[0005] The present invention is implemented through the following technical solutions: an elevator double-sided folding car door, including two groups of left-right symmetrical folding door bodies and an electric drive system, one side of the two groups of folding door bodies is hinged to the vertical frame of the car, when the car door is opened, the electric drive system drives the two groups of folding door bodies to fold and close to the two sides of the car respectively, the door machine width of this patent is not greater than the car width, and the limited shaft space can be fully utilized; the folding car door includes two groups of left-right symmetrical folding door bodies, so the width of a single group of folding door bodies is relatively small, when the folding car door is opened, the electric drive system drives the two groups of folding door bodies, eliminating the need for passengers to manually open and close the car door, and the extension range of the single group of folding door bodies is located on both sides of the car, and the extension range is small, thereby effectively improving passenger comfort.

[0006] According to the above technical scheme, preferably, the folding door body includes a pivot door and a sliding door which are hingedly connected, one side of the pivot door is hinged to the vertical frame at the entrance and exit of the car, and the other side of the pivot door is hinged to the sliding door through a hinge shaft. A guide groove is provided on the horizontal cross frame of the entrance and exit of the car, and a guide wheel which is slidably connected to the guide groove is provided on the side of the sliding door away from the hinge shaft. When the electric drive system drives the two groups of folding door bodies to fold and close to both sides of the car respectively, the pivot door rotates around the vertical frame of the car, and the pivot door pulls the sliding door. The sliding door is hingedly connected to the pivot door through the hinge shaft. At the same time, the guide wheel on the sliding door slides in the guide groove until the pivot door rotates 90°, and the folding and closing of the pivot door and the sliding door are completed.

[0007] According to the above technical scheme, preferably, the electric drive system includes a driving mechanism and two groups of left-right symmetrical transmission shafts, a cam groove is provided on the rotating shaft door, the transmission shaft is rotatably connected to the car through a bearing seat, the bearing seat is fixedly connected to the upper part of the car, and the lower end of the transmission shaft is horizontally fixedly connected with a cam rotating rod that cooperates with the cam groove. The driving mechanism drives the two groups of transmission shafts to rotate synchronously in opposite directions. Under the action of the driving mechanism, the transmission shaft drives the cam rotating rod to rotate, and the cam rotating rod cooperates with the cam groove on the rotating shaft door, thereby realizing smooth driving of the rotating shaft door to rotate.

[0008] According to the above technical solution, preferably, the upper end of the transmission shaft is fixedly connected to a wire rope fixing wheel, the central axis of the wire rope fixing wheel coincides with the central axis of the transmission shaft, and the wire rope fixing wheels located on the left and right sides of the car are driven by crossed wire ropes, and the crossed wire ropes can synchronously and reversely drive the two sets of wire rope fixing wheels to rotate.

[0009] According to the above technical solution, preferably, the driving mechanism includes a motor, a control box and a chain. The motor is electrically connected to the control box, and the motor and the control box are fixedly connected to the upper part of the car. The motor drives the wire rope fixing wheel to rotate through the chain, thereby realizing the motor driving the opening and closing of the two sets of folding doors.

[0010] According to the above technical solution, preferably, the upper and lower groups of horizontal cross frames of the car entrance and exit are respectively provided with upper guide grooves and lower guide grooves, the upper end of the sliding door away from the pivot door is provided with an upper guide wheel slidably connected to the upper guide groove, and the lower end of the sliding door away from the pivot door is provided with a lower guide wheel slidably connected to the lower guide groove, and the upper guide wheel and the lower guide wheel can make the folding door body open and close more smoothly.

[0011] According to the above technical solution, preferably, it also includes a door closing sensor for sensing the rotation position of the transmission shaft. When the transmission shaft rotates and closes the folding door body, the door closing sensor turns off the motor, thereby playing a role of efficient limiting.

[0012] According to the above technical solution, preferably, anti-collision rubber strips are provided on the butt joint sides of the two sets of sliding doors to enhance the sealing effect of the car door when closing, and prevent the sliding doors of the two sets of folding door bodies from colliding.

[0013] The beneficial effects of the present invention are:

[0014] (1) The width of the door machine of this patent is not greater than the width of the car, which can make full use of the limited hoistway space;

[0015] (2) The folding door of the present invention comprises two groups of symmetrical folding door bodies. The width of a single group of folding door bodies is relatively small. When the folding door is opened, the extension range of the folding door bodies is located on both sides of the car, and the extension range is small, thereby effectively improving the passenger comfort.

[0016] (3) This patent includes an electric drive system. When the folding car door is opened, the electric drive system drives the two sets of folding door bodies to fold and close to the two sides of the car, eliminating the need for passengers to manually open and close the car door. The operation is simple and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure when the door is closed according to an embodiment of the present invention is shown.

[0018] Figure 2 A schematic diagram of the three-dimensional structure when the door is closed according to an embodiment of the present invention is shown.

[0019] Figure 3 A schematic diagram of the three-dimensional structure when the door is opened according to an embodiment of the present invention is shown.

[0020] Figure 4 A schematic diagram of the main structure of the folding door body when it is unfolded according to an embodiment of the present invention is shown.

[0021] Figure 5 A schematic diagram of the three-dimensional structure of an electric drive system according to an embodiment of the present invention is shown.

[0022] Figure 6 A front structural schematic diagram of an electric drive system according to an embodiment of the present invention is shown.

[0023] In the figure: 1. folding door body; 2. electric drive system; 3. pivot door; 4. sliding door; 5. vertical frame; 6. hinge shaft; 7. upper guide groove; 8. lower guide groove; 9. upper guide wheel; 10. lower guide wheel; 11. driving mechanism; 12. transmission shaft; 13. cam groove; 14. bearing seat; 15. cam rotating rod; 16. wire rope fixing wheel; 17. wire rope; 18. motor; 19. control box; 20. chain; 21. door closing sensor; 22. anti-collision rubber strip. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the best embodiments.

[0025] As shown in the figure, the present invention provides an elevator double-sided folding car door, which is located at the entrance and exit of the car, including two groups of symmetrical folding door bodies 1 and an electric drive system 2 for driving the folding door bodies 1, wherein the folding door body 1 includes a hinged shaft door 3 and a sliding door 4, one side of the hinged shaft door 3 is hingedly connected to a vertical frame 5 at the entrance and exit of the car, and the other side of the hinged shaft door 3 is hingedly connected to the sliding door 4 through a hinge shaft 6, and the upper and lower groups of horizontal cross frames at the entrance and exit of the car are respectively provided with an upper guide groove 7 and a lower guide groove 8, and the upper end of the sliding door 4 away from the hinged shaft door 3 is provided with an upper guide wheel 9 slidably connected to the upper guide groove 7, and the lower end of the sliding door 4 away from the hinged shaft door 3 is provided with a lower guide wheel 10 slidably connected to the lower guide groove 8, and the upper guide wheel 9 and the upper guide groove 7 and the lower guide wheel 10 and the lower guide groove 8 that cooperate with each other make the folding and unfolding process of the folding door body 1 smoother. The electric drive system 2 includes A driving mechanism 11 and two groups of left-right symmetrical transmission shafts 12, a cam groove 13 is provided on the rotating shaft door 3, the transmission shaft 12 is rotatably connected to the car through a bearing seat 14, the bearing seat 14 is fixedly connected to the upper part of the car, the lower end of the transmission shaft 12 is horizontally fixedly connected with a cam rotating rod 15 that matches the cam groove 13, the upper end of the transmission shaft 12 is fixedly connected with a wire rope fixing wheel 16, the central axis of the wire rope fixing wheel 16 coincides with the central axis of the transmission shaft 12, the wire rope fixing wheels 16 located on the left and right sides of the car are driven by crossed wire ropes 17, and the crossed wire ropes 17 can synchronously and reversely drive the two groups of wire rope fixing wheels 16 to rotate, in addition, the driving mechanism 11 includes a motor 18, a control box 19 and a chain 20, the motor 18 is electrically connected to the control box 19, the motor 18 and the control box 19 are both fixedly connected to the upper part of the car, and the motor 18 drives the wire rope fixing wheel 16 to rotate through the chain 20.

[0026] Working process:

[0027] Door opening process: initially, the folding car door is in a normally closed state, i.e., a closed state. A door opening signal is given, i.e., the elevator is called and in place. At this time, the motor 18 drives the transmission shaft 12 to rotate through the chain 20. The wire rope fixing wheels 16 on the left and right sides of the car are driven by the crossed wire ropes 17. The crossed wire ropes 17 can synchronously and reversely drive the two sets of wire rope fixing wheels 16 to rotate. Since the pivot door 3 of the folding door body 1 is hinged to the vertical frame 5 of the car, the cam rotating rod fixedly connected to the transmission shaft 12 cooperates with the cam groove 13 on the pivot door 3, and the pivot door 3 rotates around the vertical frame 5. The sliding door 4 is pulled by the pivot door 3 to slide and fold until the pivot door 3 rotates 90°. At this time, the folding of the folding door body 1 is completed and the car door is opened.

[0028] Door closing process: the motor 18 drives the transmission shaft 12 in the reverse direction.

[0029] According to the above embodiment, preferably, a door closing sensor 21 for sensing the rotation position of the transmission shaft 12 is also included. When the transmission shaft 12 rotates and closes the folding door body 1, the door closing sensor 21 turns off the motor 18, thereby playing a role of efficient limiting.

[0030] Furthermore, anti-collision rubber strips 22 are provided on the butt joint sides of the two sets of sliding doors 4. The anti-collision rubber strips 22 can enhance the sealing effect when the car door is closed, and at the same time prevent the sliding doors 4 of the two sets of folding door bodies 1 from colliding and making abnormal noises.

[0031] The beneficial effects of the present invention are:

[0032] (1) The width of the door machine of this patent is not greater than the width of the car, which can make full use of the limited hoistway space;

[0033] (2) The folding door of the present invention comprises two groups of symmetrical folding door bodies 1. The width of a single group of folding door bodies 1 is relatively small. When the folding door is opened, the extension range of the folding door bodies 1 is located on both sides of the car, and the extension range is small, thereby effectively improving the passenger comfort.

[0034] (3) This patent includes an electric drive system 2. When the folding car door is opened, the electric drive system 2 drives the two sets of folding door bodies 1 to fold and close to the two sides of the car, eliminating the need for passengers to manually open and close the car door. The operation is simple and safe.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An elevator double-sided folding car door, characterized in that: The door assembly comprises two groups of symmetrical folding door bodies and an electric drive system, one side of the two groups of folding door bodies is hinged to the vertical frame of the car. When the car door is opened, the electric drive system drives the two groups of folding door bodies to fold and close to the two sides of the car. The folding door body comprises a hinged pivot door and a sliding door, one side of the pivot door is hinged to the vertical frame of the car, and the other side of the pivot door is hinged to the sliding door through a hinge shaft. A guide groove is provided on the horizontal cross frame of the entrance and exit of the car, and a guide wheel slidably connected to the guide groove is provided on the side of the sliding door away from the hinge shaft. The electric drive system comprises a drive mechanism and two groups of symmetrical transmission shafts, the pivot door is provided with a cam groove, the transmission shaft is rotatably connected to the car through a bearing seat, the bearing seat is fixedly connected to the upper part of the car, the lower end of the transmission shaft is horizontally fixedly connected with a cam rotating rod matching the cam groove, and the drive mechanism drives the two groups of transmission shafts to rotate synchronously in opposite directions.

2. The double-sided folding elevator door according to claim 1, characterized in that: The upper end of the transmission shaft is fixedly connected with a wire rope fixing wheel, the central axis of the wire rope fixing wheel coincides with the central axis of the transmission shaft, and the wire rope fixing wheels located on the left and right sides of the car are driven by crossed wire ropes.

3. The double-sided folding elevator door according to claim 2, characterized in that: The driving mechanism comprises a motor, a control box and a chain. The motor is electrically connected to the control box, and the motor drives the wire rope fixing wheel to rotate through the chain.

4. The double-sided folding elevator door according to any one of claims 2-3, characterized in that: The upper and lower sets of horizontal cross frames of the car entrance and exit are respectively provided with upper guide grooves and lower guide grooves. The upper end of the sliding door away from the rotating shaft door is provided with an upper guide wheel slidably connected to the upper guide groove, and the lower end of the sliding door away from the rotating shaft door is provided with a lower guide wheel slidably connected to the lower guide groove.

5. The double-sided folding elevator door according to claim 4, characterized in that: The folding car door also includes a door closing sensor for sensing the rotation position of the transmission shaft. When the transmission shaft rotates and closes the folding door body, the door closing sensor turns off the motor.

6. The double-sided folding elevator door according to claim 5, characterized in that: Anti-collision rubber strips are provided on the butt joint sides of the two sets of sliding doors.

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