Triangular key of elevator

Abstract

The utility model relates to the technical field of elevators, and discloses a triangular key of an elevator, which comprises a key head, a frame and an elastic wedge, the key head is rotatably connected with the frame, the frame is embedded in the elastic wedge, the elastic wedge is provided with a clamping groove and an inclined plane, and the inclined plane is provided with a clamping groove. The thickness of the elastic wedge is gradually reduced along the inclined face, the clamping groove is located in the middle of the inclined face, and the key head can be embedded into the clamping groove. The elevator door blocking device is simple in structure, convenient to carry and capable of preventing an elevator door from being closed to achieve the door blocking effect, the elastic wedge plays a role of a handle, and more labor is saved when the key head is rotated.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a triangular key for an elevator. Background Art

[0002] When an elevator fails or is installed, it is sometimes necessary to open the elevator floor door or car door and keep it open. In such cases, elevator staff often use a triangular key to open the elevator door and then randomly look for objects such as screwdrivers, expansion bolts, etc. to prevent the floor door or car door from closing. Since the objects used are not dedicated door blockers, the door blocking effect is not very reliable. Sometimes the door will close again when it is touched or vibrated. Such situations may pose certain risks to some elevator operations. For example, when the elevator staff is carrying objects into the shaft, the door suddenly closes. The elevator staff may turn around to stop the door from closing due to the abnormality of the door, which may cause the objects to hit people, damage the objects to be carried, or even cause people to fall or fall into the shaft due to hasty steps. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provides a triangular key for an elevator.

[0004] The purpose of the utility model is achieved through the following technical scheme: a triangular key for an elevator comprises a key head, a frame and an elastic wedge, the key head is rotatably connected to the frame, the frame is embedded in the elastic wedge, the elastic wedge is provided with a slot and an inclined surface, the thickness of the elastic wedge gradually decreases along the inclined surface, the slot is located in the middle of the inclined surface, and the key head can be embedded in the slot.

[0005] A better option is that the frame includes a limit frame and an annular protrusion, the annular protrusion is connected to the outer wall of the limit frame, the annular protrusion forms a limit portion, the key head is rotatably mounted on the limit portion, and both ends of the limit frame are embedded in the elastic wedge.

[0006] A better option is that the key head includes a connecting cylindrical part, a transition connecting part and a keyhole part which are connected in sequence, the connecting cylindrical part is rotatably connected to the frame, the connecting cylindrical part can be embedded in the card slot, and the keyhole part is provided with a triangular hole.

[0007] A more preferred option is that the slot is provided with a guiding arc angle.

[0008] More preferably, a guiding angle is provided at one end of the elastic wedge away from the frame, and the guiding angle is located on both sides of the elastic wedge.

[0009] A better choice is that the elastic wedge is made of rubber.

[0010] Preferably, the frame is made of stainless steel.

[0011] A better choice is that the key head is made of stainless steel.

[0012] The utility model has the following advantages and beneficial effects compared with the prior art:

[0013] The utility model has a simple structure and is easy to carry through the key head, the frame and the elastic wedge, and can prevent the elevator door from closing to play a door blocking effect. The elastic wedge plays the role of a handle, and it is more labor-saving when rotating the key head. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a triangular key for an elevator of the utility model;

[0015] Figure 2 It is a schematic diagram of a triangular key for an elevator of the utility model;

[0016] Figure 3 It is a schematic diagram of an elastic wedge of a triangular key of an elevator according to the utility model;

[0017] Figure 4 It is a schematic diagram of a limit frame of a triangular key of an elevator of the utility model;

[0018] The markings of the components in the accompanying drawings are as follows: 1-key head; 101-connecting cylindrical part; 102-transition connecting part; 103-keyhole part; 104-triangular hole; 2-frame; 201-limiting frame; 202-annular protrusion; 203-limiting part; 3-elastic wedge; 301-slot; 302-guide bevel; 303-inclined surface; 304-guide arc angle. DETAILED DESCRIPTION

[0019] The utility model object of the utility model is further described in detail below in conjunction with the drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation method of the utility model is not limited to the following embodiments.

[0020] like Figure 1-4 As shown, a triangular key for an elevator includes a key head 1, a frame 2 and an elastic wedge 3. The frame 2 passes through one end of the key head 1, and the key head 1 can rotate around the frame 2. Both ends of the frame 2 are embedded in the elastic wedge 3, and the key head 1 rotates toward the elastic wedge 3, and the key head 1 can be embedded in the card slot 301 of the elastic wedge 3 to fix the key head 1.

[0021] The key head 1 is made of stainless steel and is used to open the triangular lock cylinder and is used as a handle when the elastic wedge 3 is pulled out. The frame 2 is made of stainless steel and is used to connect the key head 1 and the elastic wedge 3, so that the key head 1 can rotate relative to the elastic wedge 3 and provide a fulcrum when unlocking and pulling out the elastic wedge 3. The elastic wedge 3 is made of rubber and acts as a lever when the key head 1 unlocks the door and acts as a door stop when opening the door.

[0022] The top of the elastic wedge 3 is provided with an inclined surface 303, and the thickness of the elastic wedge 3 gradually decreases along the inclined surface 303. A clamping groove 301 is provided in the middle of the elastic wedge 3, and the clamping groove 301 is in the same axial direction as the inclined surface 303 and is located in the middle of the inclined surface 303. Guide arc angles 304 are provided on both sides of the top of the clamping groove 301 to guide the key head 1 to fall into the clamping groove 301. A guide bevel 302 is provided at one end of the elastic wedge 3 away from the frame 2, and the guide bevel 302 is symmetrically distributed on both sides of the elastic wedge 3.

[0023] The frame 2 includes a limit frame 201 and an annular protrusion 202. The annular protrusion 202 is connected to the outer wall of the limit frame 201. The annular protrusion 202 forms a limit portion 203. The limit portion 203 passes through the through hole of the key head 1 and limits the key head 1. The key head 1 can rotate relative to the limit portion 203.

[0024] The key head 1 comprises a connecting cylindrical portion 101, a transition connecting portion 102 and a key hole portion 103 which are connected in sequence. The connecting cylindrical portion 101 is rotatably connected to the frame 2. The key hole portion 103 is provided with a triangular hole 104 which corresponds to the triangular lock core of the elevator.

[0025] The unlocking working principle is as follows: when the triangular key is in the folded state, the triangular hole 104 of the key head 1 is overlapped with the triangular lock core, and the handle lever formed by the frame 2 and the elastic wedge 3 can be used to drive the key head 1 to rotate effortlessly, thereby realizing the unlocking function.

[0026] The working principle of the door blocking is as follows: the key head 1 is taken out of the card slot 301, and the triangular key is in the unfolded state. The elastic wedge 3 is inserted into the gap of the elevator door. Due to the parallel forward force of the elevator, the elastic wedge 3 is subjected to a vertical downward component force, so that the elastic wedge 3 receives a large friction force, thereby preventing the elevator door from closing. After the elevator door is blocked, one hand uses the key head 1 as a handle to pull the elastic wedge 3 out of the elevator door, and the other hand resists the movement of the elevator door to take out the triangular key.

[0027] The above-mentioned specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A triangular key for an elevator, characterized in that: It includes a key head, a frame and an elastic wedge, wherein the key head is rotatably connected to the frame, the frame is embedded in the elastic wedge, the elastic wedge is provided with a slot and an inclined surface, the thickness of the elastic wedge gradually decreases along the inclined surface, the slot is located in the middle of the inclined surface, and the key head can be embedded in the slot.

2. The triangular key for an elevator according to claim 1, characterized in that: The frame includes a limiting frame and an annular protrusion, wherein the annular protrusion is connected to the outer wall of the limiting frame, the annular protrusion forms a limiting portion, the key head is rotatably mounted on the limiting portion, and both ends of the limiting frame are embedded in the elastic wedge.

3. The triangular key for an elevator according to claim 1, characterized in that: The key head comprises a connecting cylindrical portion, a transition connecting portion and a key hole portion which are connected in sequence, the connecting cylindrical portion is rotatably connected to the frame, the connecting cylindrical portion can be embedded in the card slot, and the key hole portion is provided with a triangular hole.

4. The triangular key for an elevator according to claim 1, characterized in that: The clamping groove is provided with a guiding arc angle.

5. The triangular key for an elevator according to claim 1, characterized in that: A guiding angle is arranged at one end of the elastic wedge away from the frame, and the guiding angle is located at two sides of the elastic wedge.

6. The triangular key for an elevator according to claim 1, characterized in that: The elastic wedge is made of rubber.

7. The triangular key for an elevator according to claim 1, characterized in that: The frame is made of stainless steel.

8. The triangular key for an elevator according to claim 1, characterized in that: The key head is made of stainless steel.

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