CN210714229U

CN210714229U - Internal opening type safety door

Info

Publication number: CN210714229U
Application number: CN201921365439.9U
Authority: CN
Inventors: 石苏齐; 卢伟; 陈微
Original assignee: Frantec Changzhou Construction Machinery Co Ltd
Current assignee: Frantec Changzhou Construction Machinery Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-06-09
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses an inward opening type safety door, which comprises a door body and a door frame, wherein one side of the door body is rotationally connected with the door frame through an elastic hinge, and the opposite side of the door body can be locked with the door frame through a fixing component; the fixing assembly comprises a door catch and a butt joint piece which can be clamped with the door catch, one end of the door catch is rotatably connected with the door body, and the gravity center of the door catch is close to the free end; the butt joint piece is fixedly connected with the door frame, and the butt joint piece can be abutted against the side edge of the door body; the knocker is including setting up the latch hook at its free end, works as the butt joint spare with when the door body contacts, the knocker can rotate so that the latch hook with the butt joint spare joint under its action of gravity. The utility model discloses can reduce the required thrust of platform door locking, reduce the potential safety hazard of the incomplete locking of platform door.

Description

Internal opening type safety door

Technical Field

The utility model relates to an aerial working platform field, concretely relates to interior open emergency exit.

Background

In the field of high-altitude operation, because of the particularity of equipment, the high-altitude vehicle operation platform is used as equipment for high-altitude manned operation, and the comfort and the safety of a product are particularly important.

The locking of the high-altitude vehicle operation platform in the prior art mainly utilizes the cooperation of the elastic hinge and the bolt spring, the kinetic energy generated by the thrust of people is converted into the elastic potential energy of the elastic hinge when the door is opened, the thrust acting on the platform door disappears in the closing process of the platform door, and the elastic hinge converts the elastic potential energy into the kinetic energy of the rotation of the platform door so as to push the bolt spring to reset. However, the keeper can receive the elastic resistance of keeper spring at the in-process of motion to and the frictional resistance of keeper frame and limiting plate, therefore need great thrust to rotate the platform door and just can save sufficient elastic force and make the platform door reset the locking, otherwise can cause the platform door to seem closed but actually not locked, increased the potential safety hazard.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an interior open emergency exit, its required minimum thrust that can reduce platform door locking reduces the potential safety hazard of the incomplete locking of platform door.

In order to solve the technical problem, the utility model provides an inward opening type safety door, which comprises a door body and a door frame, wherein one side of the door body is rotationally connected with the door frame through an elastic hinge, and the opposite side of the door body can be locked with the door frame through a fixing component; the fixing assembly comprises a door catch and a butt joint piece which can be clamped with the door catch, one end of the door catch is rotatably connected with the door body, and the gravity center of the door catch is close to the free end; the butt joint piece is fixedly connected with the door frame, and the butt joint piece can be abutted against the side edge of the door body; the knocker is including setting up the latch hook at its free end, works as the butt joint spare with when the door body contacts, the knocker can rotate so that the latch hook with the butt joint spare joint under its action of gravity.

Furthermore, a limiting plate is arranged on the door body, and the free end of the door catch close to the rotating position can be abutted against the limiting plate; so as to limit the included angle between the connecting line of the gravity center and the rotating position of the door catch and the horizontal line to be an acute angle.

Furthermore, the door holder is rotatably connected with the door body through a first connecting rod, and the door holder is in clearance fit with the first connecting rod.

Furthermore, the door holder is rotatably connected with the door body through a second connecting rod, and the door holder is connected with the second connecting rod through a bearing.

Further, the surface of the butt joint piece is provided with a buffer layer.

Furthermore, the side edge of the butt joint piece is provided with a bend.

Furthermore, a first magnetic part is arranged on the side edge of the door body, and a second magnetic part which can be adsorbed by the first magnetic part is arranged on the door frame.

Furthermore, the lower end of the door body and the lower end of the door frame are both provided with surrounding edges.

The utility model has the advantages that:

one end of the door holder is rotationally connected with the door body, so that the central position of the door holder is positioned at one side close to the free end of the door holder, and the central position of the door holder is positioned at the outer side of the rotational position, so that the door holder can rotate under the action of self gravity, and the locking of the door holder and the butt joint piece is realized; the butt joint piece is fixedly arranged on the door frame and can be contacted with the door body when the door body and the door frame are locked so as to limit the continuous rotation of the door body; the free end of the door catch is convexly provided with a lock hook, when the door body is abutted against the butt joint piece, the door catch rotates under the action of self gravity until the lock hook is clamped and fixed with the butt joint piece; therefore, the butt joint piece is used for limiting the door body to rotate towards the outer side, and meanwhile, the latch hook and the butt joint piece are clamped and embedded to limit the door body to rotate towards the inner side, so that the door body and the door frame are locked.

Drawings

Fig. 1 is an overall schematic view of the present invention;

fig. 2 is a partial schematic view of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is an unlocking state diagram of the middle fixing component of the present invention.

The reference numbers in the figures illustrate: 1. a door frame; 2. a door body; 21. a limiting plate; 3. an elastic hinge; 4. a door catch; 41. a first connecting rod; 42. a latch hook; 5. a docking member; 51. bending; 6. and (7) surrounding edges.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1 and 2, an embodiment of the inward opening type safety door of the present invention includes a door body 2 and a door frame 1, one side of the door body 2 is rotatably connected to the door frame 1 through an elastic hinge 3, and the opposite side of the door body 2 is locked to the door frame 1 through a fixing component, i.e. the fixing component is disposed on the side opposite to the elastic hinge 3.

Referring to fig. 1-4, the fixing component comprises a door catch 4 and a butt joint piece 5 clamped with the door catch 4, the door catch 4 is rotatably connected with the side edge of the door body 2, and the rotating planes of the door catch 4 and the door body 2 are not parallel to the rotating plane of the door body 2; the butt joint piece 5 is fixedly connected with the door frame 1, and the door body 2 and the door frame 1 can be locked by clamping the door catch 4 and the butt joint piece 5. The door latch 4 is rotatably connected to the door body 2 by a first connecting rod 41, and the door latch 4 is in clearance fit with the first connecting rod 41 in order to reduce frictional resistance when the door latch 4 rotates. In another embodiment, the door latch 4 may also be rotatably connected to the door body 2 via a second connecting rod, and a bearing is disposed between the door latch 4 and the second connecting rod in order to reduce the frictional resistance when the door latch 4 rotates.

Referring to fig. 3 and 4, one end of the door latch 4 is rotatably connected to the door body 2, so that the center position of the door latch 4 is located at a side near the free end thereof, and since the center position of the door latch 4 is located at an outer side of the rotation position, the door latch 4 can be rotated by its own weight, thereby achieving locking of the door latch 4 and the opposite member 5. The butt piece 5 is fixedly arranged on the door frame 1, and the butt piece 5 can be contacted with the door body 2 when the door body 2 and the door frame 1 are locked so as to limit the continuous rotation of the door body 2. The free end of the door catch 4 is convexly provided with a lock hook 42, when the door body 2 is abutted against the butt-joint part 5, the door catch 4 rotates under the action of self gravity until the lock hook 42 is clamped and fixed with the butt-joint part 5; therefore, the door body 2 is restricted from rotating outward by the abutment 5, and the door body 2 is restricted from rotating inward by the latch hook 42 and the abutment 5, so that the door body 2 and the door frame 1 are locked and recorded as a locked state. When the door needs to be opened, pushing force horizontally towards the interior of the safety door is applied to the door catch 4, so that the door catch 4 rotates around the rotating position of the door body 2 until the lock hook 42 is separated from the butt-joint part 5; when the door holder 4 is pushed continuously, the door body 2 is driven to rotate around the elastic hinge 3, so that the door is opened and is recorded as an unlocked state. Since the elastic hinge 3 is disposed between the door body 2 and the door frame 1 in this embodiment, the pushing force is converted into the elastic force of the elastic hinge 3 in the process of pushing the door body 2 to rotate. When an operator enters the safety door and then the pushing force exerted on the door body 2 disappears, the elastic hinge 3 can convert the elastic force of the elastic hinge into the power for pushing the door body 2 to rotate, and therefore the reset of the door body 2 is assisted. Because the door body 2 only needs to overcome the gravity of the door catch 4 to do work in the process of locking the door catch 4 and the butt piece 5 by utilizing the gravity of the door catch 4, the door body 2 can also realize the reset of the door catch 4 even in a smaller safety angle, thereby effectively reducing the situation of incomplete locking of the door body 2 and further reducing the potential safety hazard. Further, since the rigidity of the elastic hinge 3 between the door body 2 and the door frame 1 is small because the force required to restore the door body 2 is small, the number of the elastic hinges 3 to be provided can be reduced.

Referring to fig. 3 and 4, a limiting plate 21 is fixedly disposed on the door body 2, and the limiting plate 21 is located at a side close to a rotation position of the door catch 4, so that a rotation angle of the door catch 4 can be limited by the limiting plate 21. In order to enable the door latch 4 to be reset under the action of the gravity of the door latch 4, it is required to ensure that the center located outside the rotating position is not located in a vertical plane in the rotating process of the door latch 4, namely, the included angle of the connecting line of the center of gravity and the rotating position relative to a horizontal line is always an acute angle. Further, when the door catch 4 abuts against the stopper plate 21, the latch hook 42 can be completely separated from the abutting plate.

Referring to fig. 3 and 4, the side of the docking member 5 is provided with a bent 51, and the bent 51 can increase the strength of the docking member 5, thereby reducing the deformation of the docking member 5 when the latch hook 42 and the docking member 5 are latched. Meanwhile, in order to reduce the impact force between the door body 2 and the abutment 5 when the door body 2 and the door frame 1 are locked, the surface of the abutment 5 is provided with a buffer layer (not shown in the figure), and the buffer layer is preferably made of rubber in this embodiment.

Referring to fig. 1, a first magnetic member (not shown in the figure) is disposed on a side edge of the door body 2, a second magnetic member (not shown in the figure) is correspondingly disposed on the door frame 1, and the first magnetic member and the second magnetic member can be attracted. Therefore, the door body 2 and the door frame 1 can be pre-fixed by the adsorption of the first magnetic piece and the second magnetic piece, so that the door body 2 and the door frame 1 can be locked conveniently.

Referring to fig. 1, the lower end of the door body 2 and the lower end of the door frame 1 are provided with the surrounding edges 6, and the surrounding edges 6 can increase the strength and rigidity of the door body 2 and the door frame 1.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims

1. An inward opening type safety door is characterized by comprising a door body and a door frame, wherein one side of the door body is rotatably connected with the door frame through an elastic hinge, and the opposite side of the door body can be locked with the door frame through a fixing assembly; the fixing assembly comprises a door catch and a butt joint piece which can be clamped with the door catch, one end of the door catch is rotatably connected with the door body, and the gravity center of the door catch is close to the free end; the butt joint piece is fixedly connected with the door frame, and the butt joint piece can be abutted against the side edge of the door body; the knocker is including setting up the latch hook at its free end, works as the butt joint spare with when the door body contacts, the knocker can rotate so that the latch hook with the butt joint spare joint under its action of gravity.

2. The internally-opened safety door according to claim 1, wherein a limit plate is provided on the door body, and a free end of the door catch near the rotational position can abut against the limit plate; so as to limit the included angle between the connecting line of the gravity center and the rotating position of the door catch and the horizontal line to be an acute angle.

3. The internally-opening type safety door according to claim 1, wherein the door holder is rotatably coupled to the door body by a first coupling rod, and the door holder and the first coupling rod are in clearance fit.

4. The internally-opening safety door according to claim 1, wherein the door latch is rotatably coupled to the door body by a second coupling rod, and the door latch is coupled to the second coupling rod by a bearing.

5. An internally opening safety door according to claim 1, wherein the face of the abutment is provided with a buffer layer.

6. An internally opening safety door according to claim 1 in which the sides of the abutment members are provided with bends.

7. The inward opening type safety door according to claim 1, wherein a first magnetic member is provided at a side of the door body, and a second magnetic member capable of being attracted to the first magnetic member is provided at the door frame.

8. An internally-opening type safety door according to claim 1, wherein the lower end portions of the door body and the door frame are provided with a surrounding edge.