Emergency evacuation door handle locking mechanism

Abstract

The utility model relates to the technical field of rail transit, in particular to an emergency evacuation door handle locking mechanism which comprises a locking mechanism and an electromagnetic limiting mechanism, the locking mechanism comprises a lock shell and a lock pin arranged in the lock shell in a sliding mode, and the lock shell is provided with a groove used for containing a handle; the lock pin extends out of the lock shell, and the lock pin at the extending position is inserted into the lock hole in the handle in the groove, so that the handle is locked; the electromagnetic limiting mechanism comprises a limiting part, when the electromagnetic limiting mechanism is powered on, the limiting part stretches out and limits the lock pin at the stretching-out position, according to the emergency evacuation door handle locking mechanism, under the condition that a vehicle is in a normal form, the electromagnetic limiting mechanism is powered on, locking of the handle is achieved, the emergency evacuation door is prevented from being opened accidentally, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, and particularly relates to an emergency evacuation door handle locking mechanism. Background Art

[0002] An emergency evacuation door is an emergency escape device that needs to be provided on a locomotive and needs to be opened in case of an emergency on the locomotive to facilitate personnel evacuation. The existing emergency evacuation door system has a self-locking device, but in some emergencies, there is still a risk of the emergency evacuation door being opened. Content of the Utility Model

[0003] In order to solve the problem of insufficient locking reliability of the emergency evacuation door in the prior art, the utility model provides an emergency evacuation door handle locking mechanism that improves locking reliability.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] An emergency evacuation door handle locking mechanism, comprising:

[0006] A locking mechanism, the locking mechanism includes a lock housing and a lock pin slidably disposed in the lock housing. The lock housing is provided with a groove for accommodating the handle; the lock pin extends out of the lock housing, and the lock pin in the extended position is inserted into the lock hole on the handle in the groove, thereby realizing the locking of the handle.

[0007] An electromagnetic limiting mechanism, the electromagnetic limiting mechanism includes a limiting portion. When the electromagnetic limiting mechanism is powered on, the limiting portion extends out and limits the lock pin in the extended position.

[0008] Further, the electromagnetic limiting mechanism includes an electromagnetic lock, and the limiting portion includes the lock tongue of the electromagnetic lock.

[0009] Further, the telescopic direction of the lock tongue of the electromagnetic lock is perpendicular to the telescopic direction of the lock pin. A limiting groove is provided on the side wall of the lock pin, and the locked lock tongue passes through the lock housing and is inserted into the limiting groove to realize the limiting of the lock pin.

[0010] Further, a spring is provided between the end of the lock pin away from the handle and the lock housing.

[0011] Further, the lock housing is provided with a limiting structure for limiting the extreme position of the lock pin extending out.

[0012] Further, the limiting structure is the inner wall of the lock housing. The spring presses the lock pin against the inner wall of the lock housing to limit its maximum extension amount.

[0013] Further, a spherical body for extending into the lock hole is integrally provided, fixed or lapped at the end of the lock pin. The edge of the handle or the guiding conical surface can extrude the lock pin along the spherical body to retract the lock pin.

[0014] Further, the edge of the lock hole of the handle has a guiding conical surface for guiding the spherical body of the lock pin.

[0015] Further, it further includes a base, the base is fixed on the door frame of the emergency evacuation door, and the locking mechanism and the electromagnetic limit mechanism are installed on the base.

[0016] Beneficial effects:

[0017] (1) In the case of normal driving of the vehicle, the electromagnetic limit mechanism of the emergency evacuation door handle locking mechanism is powered on, realizing the locking of the handle, preventing the accidental opening of the emergency evacuation door, and reducing the potential safety hazard;

[0018] (2) The locking direction of the electromagnetic lock and the locking direction of the lock pin are perpendicular, which is convenient for installing the entire locking mechanism on the door frame, reducing the occupied area in the width direction of the door frame, and not interfering with other parts;

[0019] (3) The end of the lock pin for extending into the lock hole is a spherical body, the edge of the lock hole of the handle has a guiding conical surface, when the handle enters and exits the groove, the handle can drive the lock pin to retract against the thrust of the spring;

[0020] (4) When the handle enters the groove, the lock pin enters the lock hole of the handle under the action of the spring, and the electromagnetic limit mechanism can realize the limit of the lock pin after being powered on, without manual operation of the locking mechanism, saving the door closing time. Description of the drawings

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is a schematic installation structure diagram of the emergency evacuation door handle locking mechanism of the present invention;

[0023] Figure 2 It is a schematic three-dimensional structure diagram of the emergency evacuation door handle locking mechanism of the present invention;

[0024] Figure 3 It is a schematic structure diagram of the emergency evacuation door handle locking mechanism of the present invention omitting the lock case;

[0025] Figure 4Cross-sectional schematic view of the emergency evacuation door handle locking mechanism of the present utility model;

[0026] Figure 5 Partial structural schematic view of the handle.

[0027] 1. Locking mechanism, 11. Lock housing, 111. Groove, 112. Inner wall, 12. Lock pin, 121. Limit groove, 122. Spherical body, 13. Spring, 2. Electromagnetic lock, 21. Lock tongue, 3. Handle, 31. Lock hole, 32. Guide conical surface, 4. Base. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or component referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present utility model; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0032] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper...", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0033] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present utility model.

[0034] Such as Figures 1 to 4 , an emergency evacuation door handle locking mechanism includes a locking mechanism 1, an electromagnetic limiting mechanism and a base 4. The base 4 is fixed on the door frame of the emergency evacuation door, and the locking mechanism 1 and the electromagnetic limiting mechanism are installed on the base 4. The locking mechanism 1 includes a lock case 11 and a lock pin 12 slidably arranged in the lock case 11. The lock case 11 is provided with a groove 111 for accommodating the handle 3; the lock pin 12 extends out of the lock case 11, and the lock pin 12 in the extended position is inserted into the lock hole 31 on the handle 3 in the groove 111, thereby realizing the locking of the handle 3; the electromagnetic limiting mechanism includes a limiting part. When the electromagnetic limiting mechanism is powered on, the limiting part extends out and limits the lock pin 12 in the extended position.

[0035] The electromagnetic limiting mechanism includes an electromagnetic lock 2, and the limiting part includes the lock tongue 21 of the electromagnetic lock 2.

[0036] The extension direction of the lock tongue 21 of the electromagnetic lock 2 is perpendicular to the extension direction of the lock pin 12 . The side wall of the lock pin 12 is provided with a limiting groove 121 . The locked lock tongue 21 passes through the lock housing 11 and is inserted into the limiting groove 121 to limit the lock pin 12 .

[0037] The telescopic movement of the lock pin 12 can be achieved manually. As a preferred embodiment of the utility model, a spring 13 is provided between the end of the lock pin 12 away from the handle 3 and the lock housing 11. The lock housing 11 is provided with a limiting structure for limiting the lock pin 12 to extend to an extreme position. The limiting structure can be the inner wall of the lock housing 11, that is, the lock pin 12 is pressed against the inner wall 112 of the lock housing 11 under the action of the spring 13.

[0038] The end of the lock pin 12 is integrally provided, fixed or overlapped with a spherical body 122 for extending into the lock hole 31. As an embodiment of the utility model, the spherical body 122 is integrally provided on the lock pin 12. As another embodiment, the spherical body 122 is fixed to the lock pin 12. As another embodiment, the spherical body 122 adopts a steel ball, which is partially stuck in the lock shell 11, and the lock pin 12 overlaps the steel ball. Specifically, the lock pin 12 supports the steel ball under the action of the spring 13, and the steel ball extending from the lock shell 11 can be inserted into the lock hole 31 on the handle 3, such as Figure 4 and 5 The edge of the lock hole 31 of the handle 3 has a guide cone surface 32 that guides the spherical body 122 of the lock pin 12.

[0039] Working principle:

[0040] During the closing process of the emergency door, the edge of the handle 3 first squeezes the spherical body 122 of the lock pin 12, and the lock pin 12 overcomes the force of the spring 13 and retracts inward. When the handle 3 enters the groove 111, the lock pin 12 faces the lock hole 31 of the handle. The lock pin 12 is extended and inserted into the lock hole 31 by the force of the spring 13. When the vehicle is operating normally, the electromagnetic lock 2 is energized, and the lock tongue 21 of the electromagnetic lock 2 is inserted into the limit groove 121 of the lock pin 12 to complete the locking;

[0041] When the emergency door needs to be opened, the vehicle is powered off and the lock tongue 21 of the electromagnetic lock 2 retracts. During the opening of the emergency door, the handle 3 must first be disengaged from the groove 111. During the disengagement process, the guide conical surface 32 of the handle 3 contacts the spherical body 122 of the lock pin 12, and the spherical body 122 retracts along the guide conical surface 32 until the handle is completely disengaged from the groove 111. At this time, the emergency door can be opened.

[0042] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An emergency evacuation door handle locking mechanism, characterized in that: include: A locking mechanism (1), the locking mechanism (1) comprising a lock housing (11) and a lock pin (12) slidably arranged in the lock housing (11), the lock housing (11) being provided with a groove (111) for accommodating a handle (3); the lock pin (12) extending from the lock housing (11), the lock pin (12) in the extended position being inserted into a lock hole (31) on the handle (3) in the groove (111), thereby achieving locking of the handle (3); The electromagnetic limiting mechanism comprises a limiting part. When the electromagnetic limiting mechanism is energized, the limiting part extends and limits the locking pin (12) to the extended position.

2. The emergency evacuation door handle locking mechanism according to claim 1, characterized in that: The electromagnetic limiting mechanism comprises an electromagnetic lock (2), and the limiting portion comprises a lock tongue (21) of the electromagnetic lock (2).

3. The emergency evacuation door handle locking mechanism according to claim 2, characterized in that: The telescopic direction of the lock tongue (21) of the electromagnetic lock (2) is perpendicular to the telescopic direction of the lock pin (12); a limiting groove (121) is provided on the side wall of the lock pin (12); the locked lock tongue (21) passes through the lock housing (11) and is inserted into the limiting groove (121) to achieve the limiting of the lock pin (12).

4. The emergency evacuation door handle locking mechanism according to claim 1, characterized in that: A spring (13) is provided between the lock pin (12) at one end away from the handle (3) and the lock housing (11).

5. The emergency door handle locking mechanism according to claim 1, characterized in that: The lock housing (11) is provided with a limiting structure for limiting the lock pin (12) from extending to an extreme position.

6. The emergency evacuation door handle locking mechanism according to claim 5, characterized in that: The limiting structure is the inner wall (112) of the lock housing (11).

7. An emergency door handle locking mechanism according to any one of claims 4 to 6, characterized in that: The end of the lock pin (12) is integrally provided, fixed or overlapped with a spherical body (122) for extending into the lock hole (31).

8. The emergency evacuation door handle locking mechanism according to claim 7, characterized in that: The edge of the lock hole (31) of the handle (3) has a guide conical surface (32) which guides the spherical body (122) of the lock pin (12).

9. The emergency evacuation door handle locking mechanism according to claim 1, characterized in that: It also comprises a base (4), wherein the base (4) is fixed on the door frame of the emergency evacuation door, and the locking mechanism (1) and the electromagnetic limiting mechanism are installed on the base (4).

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