An elevator escape window

Abstract

This application proposes an elevator escape window, which has an escape window at the top of the elevator car; the escape window is connected to a hollow window body via a hinge; a safety lock is installed on the window body; an observation window is installed directly above the safety lock; and a fall arrestor is installed at the bottom of the elevator car. The safety lock includes: an irregularly shaped keyhole at the bottom of the window body; a rotating shaft whose first end connects to the irregularly shaped keyhole, its middle section passes through the hollow cavity of the window body, and its top end extends out of the window body; a buckle located in the middle section of the rotating shaft with its bend direction facing away from the escape window; a handle located at the end of the rotating shaft; and a locking rod fixed by a mounting base and cooperating with the buckle. This application, by using an irregularly shaped keyhole, prevents ordinary passengers from opening the safety window themselves. Rescuers only need to turn the handle to retract the locking rod from the rotating shaft into the window body, thereby opening the escape window for rescue. This solves the problem of low safety performance of existing elevator escape windows.

Description

Technical Field

[0001] This utility model relates to the technical field of elevator escape structures, and in particular to an elevator escape window. Background Technology

[0002] Elevator escape windows are an important component of elevator safety systems. Their primary function is to provide passengers with a safe and quick escape route in the event of elevator malfunctions or emergencies. When elevator malfunctions (such as power outages or service disruptions) and passengers are trapped, especially if the elevator car doors are damaged and cannot be opened, escape windows can serve as a second escape route, allowing passengers to leave the elevator car and avoiding the panic and danger that may result from being trapped for an extended period.

[0003] However, the current design purpose of elevator escape windows is to provide an escape window that passengers can easily open themselves so that they can climb out of the elevator car. This design has the following problems: Passengers, as users, may not understand the structure and working principle of elevators. If they climb out of the escape window into the elevator shaft on their own, they will be unable to cope with the complex environment and may fall into a more dangerous situation. The existing escape windows are not connected to the elevator's operating circuit. When the elevator car malfunctions, the escape window may open, and as passengers are passing through the escape window, the car may suddenly start, leading to a dangerous situation. Existing escape windows can be opened from inside the car, but are difficult to open from the outside, and cannot achieve the function of automatically resetting the locking mechanism when the escape window is closed. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that elevator escape windows have low safety performance, cannot effectively prevent passengers from climbing over the escape windows, and at the same time ensure that the elevator car stops running.

[0005] To achieve the above objectives, this application proposes an elevator escape window, comprising: an elevator car; an escape window provided at the top of the elevator car; the escape window being connected to a hollow window body via a hinge; a safety lock provided on the window body; an observation window provided directly above the safety lock; and a fall arrestor provided at the bottom of the elevator car. The safety lock comprises: an irregularly shaped lock hole at the bottom of the window body; a rotating shaft whose first end connects to the irregularly shaped lock hole, its middle section passes through the hollow cavity of the window body, and its top end extends out of the window body; a buckle provided in the middle section of the rotating shaft with its hook bending in a direction opposite to the escape window; a handle provided at the tail end of the rotating shaft; and a locking rod fixed by a first mounting base and a second mounting base and cooperating with the buckle.

[0006] The elevator escape window of this application features a safety lock installed on the safety window. The irregularly shaped keyhole of the safety lock ensures that ordinary passengers cannot easily open the safety window from inside the car. A handle located at the top of the escape window is connected to a rotating shaft. Rescuers only need to turn the handle to cause the latch on the rotating shaft to retract the locking rod into the window body, thereby opening the escape window from the outside and entering the elevator car to carry out the rescue. This solves the problem of low safety performance of existing elevator escape windows, which cannot effectively prevent passengers from climbing over the escape window on their own, while ensuring that the car stops running.

[0007] As an improvement to the aforementioned locking rod in this application, in order to achieve the function of fixing the locking rod and locking the window relative to the elevator car, the locking rod includes: a pin, wherein the first end of the pin is located between the first mounting base and the second mounting base, the middle section of the pin is located inside the hollow cavity of the window, and the tail end of the pin extends out of the hollow cavity of the window to the opening of the escape window.

[0008] Furthermore, in order to enable the window to press the pin back into the opening in the escape window by its own weight during the closing process, the upper end of the opening used to place the tail end of the pin in the escape window is provided with a groove whose depth gradually decreases from the top to the bottom.

[0009] Furthermore, in order to install a spring that enables the locking rod to automatically reset on the locking rod, the locking rod also includes: a retaining plate located in the middle section of the pin and connected to the end of the buckle hook; a baffle plate arranged at the junction of the middle section and the tail end of the pin; and a spring with one end abutting against the side wall of the second mounting base and the other end welded to the side wall of the baffle plate.

[0010] Furthermore, in order to ensure that the locking lever automatically resets when the window is closed, the spring is always in a compressed state.

[0011] As an improvement to the observation window mentioned above in this application, in order to display the status of the safety lock intuitively without opening the window, and to reveal the safety lock subject when maintenance is required, the observation window is made of transparent material, and the observation window is connected to the window via a hinge.

[0012] Furthermore, in order to prevent the elevator from moving when the safety window is open, the fall protection device is a normally closed limit switch connected in series with the elevator operating circuit.

[0013] The beneficial effects of this application are as follows: 1. The elevator escape window of this application, by setting a safety lock on the safety window, wherein the irregularly shaped key hole of the safety lock ensures that ordinary passengers cannot easily open the safety window from inside the car, and the handle set at the top of the escape window is connected to a rotating shaft, rescuers only need to turn the handle to make the buckle on the rotating shaft drive the locking rod to retract into the window body, thereby opening the escape window from the outside to enter the elevator car to carry out rescue. This solves the problem of low safety performance of elevator escape windows in the prior art, which cannot effectively prevent passengers from climbing over the escape window on their own, while ensuring that the car stops running.

[0014] 2. The locking function of this application is implemented as follows: When the escape window is closed, the pin set inside the window body is pushed by a spring that is installed between the second mounting base and the baffle and is in a compressed state, so that the tail end of the pin is embedded in the opening in the side wall of the escape window, thus preventing the window from being opened. During the process of the window opening to closing, the tail end of the pin will first contact the upper surface of the escape window, that is, the uppermost end of the groove. At this time, if the window is pressed down, the tail end of the pin will gradually move towards the bottom end of the escape window. As the depth of the groove gradually decreases, it drives the spring to continue to compress. Finally, when the pin moves to the opening, the spring pushes the pin into the opening, completing the locking and pin reset.

[0015] 3. The window structure of this application is hollow, which can reduce the weight of the window and make it easier to open. On the other hand, the hollow window can install the safety lock inside the window to prevent the safety lock from being damaged in the event of an overshoot by the elevator car.

[0016] 4. This application has an observation window above the safety lock, which allows for direct observation of the safety lock's working status and prevents damage to the safety lock from going unnoticed in the first instance.

[0017] 5. The escape window of this application is connected to the fall protection device. When the escape window is opened, the fall protection device, which is the normally closed limit switch, is disconnected, and the elevator running circuit connected in series with the normally closed limit switch is disconnected. This can prevent the elevator from suddenly falling when the escape window is opened. When the escape window is closed, the normally closed limit switch returns to the normally closed state, and the elevator runs normally. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of an elevator escape window according to an embodiment of this application; Figure 2 for Figure 1 Enlarged view of point a in the middle; Figure 3 This is a schematic diagram of the security lock structure in an embodiment of this application; Figure 4 This is a schematic diagram showing the positions of the irregularly shaped lock hole and the pin in an embodiment of this application; Figure 5 This is an electrical schematic diagram of the safety lock in an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 1. Elevator car; 2. Escape window; 21. Groove; 3. Forms; 4. Safety lock; 41. Irregularly shaped lock hole; 42. Rotating shaft; 43. Buckle; 44. Handle; 45. First mounting base; 46. Second mounting base; 47. Locking rod; 471. Pin; 472. Locking plate; 473. Baffle; 474. Spring; 5. Observation window; 6. Fall protection device. Detailed Implementation

[0021] The following will be combined with the appendix Figures 1-5 The embodiments of the technical solutions of this application are described in detail below. The following embodiments are only used to more clearly illustrate the technical solutions of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] Example 1: Improving the safety performance of elevator escape windows like Figures 1 to 5 As shown, this application discloses an elevator escape window, including an elevator car 1, with an escape window 2 at the top of the elevator car 1. To improve safety, the escape window 2 is connected to a hollow window body 3 via a hinge. A safety lock 4 is provided on the window body 3, which includes an irregularly shaped lock hole 41 at the bottom of the window body 3, and a rotating shaft 42 whose first end connects to the irregularly shaped lock hole 41, its middle section passes through the hollow cavity of the window body 3, and its top end extends out of the window body 3. A latch 43 with a hook bending in the opposite direction to the escape window 2 is provided in the middle section of the rotating shaft 42, and a handle 44 is provided at the tail end of the rotating shaft 42. In addition, a locking rod 47 is included, which is fixed by a first mounting base 45 and a second mounting base 46 and cooperates with the latch 43. This design makes it difficult for ordinary passengers to open the escape window from inside the car, while rescuers can easily open the escape window by operating the handle 44, thereby solving the problem of low safety performance of elevator escape windows in the prior art.

[0023] Example 2: Implementing automatic locking and resetting of windows like Figures 1 to 5 As shown, in one embodiment of this application, to achieve the automatic locking and resetting function of the window, the locking lever 47 is further refined to include a pin 471, a locking plate 472, a baffle 473, and a spring 474. The first end of the pin 471 is located between the first mounting base 45 and the second mounting base 46, the middle section passes through the hollow cavity of the window 3, and the tail end extends out of the hollow cavity of the window 3 into the opening of the escape window 2. During the closing process of the window 3, the tail end of the pin 471 first contacts the groove 21 at the upper end of the escape window 2. As the window continues to be pressed down, the depth of the groove 21 gradually decreases, causing the pin 471 and the spring 474 to be continuously compressed. When the pin 471 moves to the opening, the spring 474 quickly pushes the pin 471 into the opening, thereby locking the window. At the same time, this design ensures that the pin 471 can automatically reset to the initial position when the window is opened again.

[0024] Example 3: Optimize the form structure to improve overall performance like Figures 1 to 5 As shown, in one embodiment of this application, the window 3 adopts a hollow design. This design not only significantly reduces the weight of the window, making it easier to open and close, but also provides space for the installation of the safety lock 4 within the hollow cavity. The hollow design avoids the risk of damage to the safety lock 4, which is directly exposed to the outside of the elevator car 1, thus improving overall durability and safety. Furthermore, the hollow design also helps improve the window's heat insulation and sound insulation performance, enhancing the riding comfort of the elevator car.

[0025] Example 4: An observation window is provided to facilitate monitoring of the security lock status. like Figures 1 to 5 As shown, in one embodiment of this application, an observation window 5 is provided directly above the safety lock 4. The observation window 5 is made of transparent material and is connected to the window body 3 via a hinge. This design allows for a direct observation of the working status of the safety lock 4 without opening the window body 3, including whether it is locked and whether there is any damage or abnormality. This ensures the reliability and safety of the elevator escape window and facilitates timely maintenance or replacement.

[0026] Example 5: Linking with fall arrest devices to ensure elevator safety like Figures 1 to 5As shown, in one embodiment of this application, the elevator escape window is also linked to the fall arrestor 6. The fall arrestor 6 is a normally closed limit switch connected in series with the elevator operating circuit. When the escape window is opened, the normally closed limit switch opens, simultaneously cutting off the elevator operating circuit connected in series with the normally closed limit switch, preventing the elevator from starting or continuing to operate. This design avoids the risk of the elevator suddenly falling when the escape window is open. When the escape window is closed, the normally closed limit switch returns to its normally closed state, the elevator operating circuit is reconnected, and the elevator resumes normal operation. This ensures the safety of the elevator when the escape window is open.

[0027] In the description of the embodiments of this application, the technical terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "set," "equipped with," "connected," and "installed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An elevator escape window, comprising: An elevator car (1) is characterized in that an escape window (2) is provided at the top of the elevator car (1); the escape window (2) is connected to a hollow window body (3) by a hinge; a safety lock (4) is provided on the window body (3); an observation window (5) is provided directly above the safety lock (4); and a fall prevention device (6) is provided at the bottom of the elevator car (1). The safety lock (4) includes: a shaped lock hole (41) provided at the bottom of the window body (3); a rotating shaft (42) whose first end is connected to the shaped lock hole (41), whose middle section passes through the hollow cavity of the window body (3), and whose top end extends out of the window body (3); a buckle (43) provided in the middle section of the rotating shaft (42) and whose hook body bends away from the escape window (2); a handle (44) provided at the tail end of the rotating shaft (42); and a locking rod (47) fixed by a first mounting base (45) and a second mounting base (46) and cooperating with the buckle (43).

2. The elevator escape window according to claim 1, characterized in that, The locking rod (47) includes a pin (471), wherein the first end of the pin (471) is located between the first mounting base (45) and the second mounting base (46), the middle section of the pin (471) is located inside the hollow cavity of the window (3), and the tail end of the pin (471) extends out of the hollow cavity of the window (3) into the opening of the escape window (2).

3. The elevator escape window according to claim 1, characterized in that, The escape window (2) is provided with a groove (21) at the upper end of the opening at the tail end of the pin (471) that gradually decreases in depth from the top to the bottom.

4. The elevator escape window according to claim 1 or 2, characterized in that, The locking rod (47) further includes: a locking plate (472) provided in the middle section of the pin (471) and connected to the end of the hook of the buckle (43); a baffle (473) arranged at the junction of the middle section and the tail end of the pin (471); and a spring (474) with one end abutting against the side wall of the second mounting base (46) and the other end welded to the side wall of the baffle (473).

5. The elevator escape window according to claim 4, characterized in that, The spring (474) is always in a compressed state.

6. The elevator escape window according to claim 1, characterized in that, The observation window (5) is made of transparent material, and the observation window (5) is connected to the window body (3) by a hinge.

7. The elevator escape window according to claim 1, characterized in that, The fall protection device (6) is a normally closed limit switch connected in series with the elevator operating circuit.

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