Dragging hand clamping prevention mechanism for elevator door

Abstract

The utility model is suitable for the technical field of elevators, and provides an elevator door anti-dragging hand-clamping mechanism which comprises an elevator door and a door frame, a groove is formed in the side, close to the elevator door, of the door frame, a movable plate is movably arranged in the groove, a rubber plate is installed on one side of the movable plate, and the rubber plate is arranged in a gap between the elevator door and the door frame in a sliding mode. A driving assembly for driving the movable plate to do horizontal reciprocating motion is further arranged in the groove, the driving assembly comprises a rotating shaft, an eccentric rod, a shifting rod, a vertical rod and a power unit, in the elevator door opening process, the power unit drives the rotating shaft and drives the eccentric rod on the rotating shaft to rotate, the shifting rod can be driven to rotate, and in the process, the shifting rod is driven to rotate; the shifting rod slides in the strip-shaped hole of the vertical rod and can drive the movable plate to be communicated with the rubber plate to do horizontal reciprocating motion together, the reciprocating motion of the rubber plate can actively push away the fingers, the fingers are prevented from being embedded into gaps, and compared with the prior art that the fingers can only be passively prevented from being pinched, the anti-pinching effect is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to an anti-dragging and hand-pinching mechanism for elevator doors. Background Art

[0002] The elevator door system is not only an important part of the basic structure of the elevator, but also an important barrier for elevator safety protection, and is a high-incidence area for elevator accidents. According to statistics, the proportion of elevator door area accidents accounts for about 70% of the total proportion of all types of accidents. It can be seen that elevator door system accidents account for the largest proportion of all accidents. Especially when there are children riding in the elevator, if the parents do not take good care of them, or if the children ride alone, when the elevator door opens, the passengers inadvertently put their hands on the elevator door, and the hands subconsciously move with the elevator door, and the fingers may be brought into the gap between the elevator door panel and the door frame and be pinched.

[0003] The prior art elevator door anti-pinch mechanism usually adds a rubber plate between the elevator door and the door frame to prevent fingers from being embedded and injured. However, since the rubber plate is fixed and has a certain deformation, when the finger is dragged into the gap, the rubber plate can only play a passive blocking role and cannot push the finger embedded in the gap out. When the dragging force is large, the finger will still be injured. Therefore, it is necessary to design a corresponding technical solution to solve the existing technical problems. Utility Model Content

[0004] The utility model aims to provide an elevator door anti-dragging and hand-pinching mechanism to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An elevator door anti-dragging and hand-pinching mechanism comprises an elevator door and a door frame, wherein a groove is provided on one side of the door frame close to the elevator door, a movable plate is movably provided in the groove, a rubber plate is installed on one side of the movable plate, the rubber plate is slidably provided in the gap between the elevator door and the door frame, a driving assembly for driving the movable plate to reciprocate horizontally is also provided in the groove, the driving assembly comprises a rotating shaft, an eccentric rod, a lever, a vertical rod and a power unit, two rotating shafts are provided, the two rotating shafts are symmetrically rotatably provided in the groove through bearings, and eccentric rods are symmetrically installed at adjacent ends of the two rotating shafts, a lever is fixedly installed between the two eccentric rods, a plurality of vertical rods are provided, the plurality of vertical rods are fixedly installed on the movable plate at equal intervals, and strip holes adapted to the sliding of the lever are opened on the vertical rods, and the power unit provides power for the rotation of the rotating shaft.

[0007] As a further solution of the utility model: a pair of guide rods are symmetrically fixedly arranged in the groove, a sliding sleeve is movably installed on the guide rods, and the movable plate is fixedly connected to the sliding sleeve.

[0008] As a further solution of the utility model: the power unit includes a gear coaxially fixedly installed on the end of the rotating shaft and a spur rack meshing with the gear, and the spur rack is fixedly installed on the side of the elevator door.

[0009] As a further solution of the utility model: a strip groove is further provided on the side of the elevator door, and a spur rack is installed in the strip groove.

[0010] As a further solution of the utility model: an inspection door is further provided at a position corresponding to the groove on the side of the door frame, and the inspection door can be detachably installed by screws.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model is provided with a movable plate, a rubber plate, a rotating shaft, an eccentric rod, a lever, a vertical rod and a power unit. During the process of opening the elevator door, the power unit can drive the rotating shaft to rotate. During the subsequent rotation of the eccentric rods on the two rotating shafts, the lever can drive the lever to revolve around the axis of the rotating shaft. During this process, the lever slides in the strip hole of the vertical rod, and can drive the movable plate to connect with the rubber plate to reciprocate horizontally. The reciprocating motion of the rubber plate can actively push away the fingers, so as to prevent the fingers from being embedded in the gap. Compared with the prior art that can only passively prevent the fingers from being pinched, the anti-pinch effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an anti-drag and hand-clamping mechanism for elevator doors;

[0014] Figure 2 It is a front sectional view of an anti-drag and hand-clamping mechanism for elevator doors;

[0015] Figure 3 It is a partial stereoscopic diagram of an anti-drag and hand-clamping mechanism for elevator doors;

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0017] In the figure: 1. elevator door; 2. door frame; 3. groove; 4. movable plate; 5. rubber plate; 6. rotating shaft; 7. eccentric rod; 8. lever; 9. vertical rod; 10. strip hole; 11. guide rod; 12. sliding sleeve; 13. gear; 14. spur rack; 15. strip groove; 16. inspection door. DETAILED DESCRIPTION

[0018] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0019] Example 1

[0020] See also Figure 1-4 , an elevator door anti-dragging and hand-pinching mechanism, comprising an elevator door 1 and a door frame 2, wherein a groove 3 is arranged on one side of the door frame 2 close to the elevator door 1, a movable plate 4 is movably arranged in the groove 3, a rubber plate 5 is installed on one side of the movable plate 4, the rubber plate 5 is slidably arranged in the gap between the elevator door 1 and the door frame 2, a driving assembly for driving the movable plate 4 to reciprocate horizontally is also arranged in the groove 3, the driving assembly comprises a rotating shaft 6, an eccentric rod 7, a lever 8, a vertical rod 9 and a power unit, the rotating shaft 6 is provided with two, the two rotating shafts 6 are symmetrically rotated in the groove 3 through bearings, and the adjacent ends of the two rotating shafts 6 are symmetrically installed with eccentric rods 7, a lever 8 is fixedly installed between the two eccentric rods 7, a plurality of vertical rods 9 are provided, and a plurality of vertical rods 9 are fixedly installed at the movable plate 9 at equal intervals. The movable plate 4 and the vertical rod 9 are provided with a strip hole 10 that is slidably matched with the lever 8. The power unit is used to provide power for the rotation of the rotating shaft 6. By arranging the movable plate 4, the rubber plate 5, the rotating shaft 6, the eccentric rod 7, the lever 8, the vertical rod 9 and the power unit, during the opening process of the elevator door 1, the power unit can drive the rotating shaft 6 to rotate. During the rotation of the eccentric rods 7 on the two rotating shafts 6, the lever 8 can be driven to revolve around the axis of the rotating shaft 6. During this process, the lever 8 slides in the strip hole 10 of the vertical rod 9, and the movable plate 4 can be driven to connect with the rubber plate 5 to reciprocate horizontally. The reciprocating motion of the rubber plate 5 can actively push away the fingers to prevent the fingers from being embedded in the gap. Compared with the prior art that can only passively prevent finger pinching, the anti-pinch effect is further improved.

[0021] Among them, a pair of guide rods 11 are symmetrically fixedly arranged in the groove 3, a sliding sleeve 12 is movably installed on the guide rods 11, and the movable plate 4 is fixedly connected to the sliding sleeve 12. The setting of the guide rods 11 and the sliding sleeve 12 further improves the stability of the horizontal reciprocating motion of the movable plate 4.

[0022] Specifically, the power unit includes a gear 13 coaxially fixedly mounted on the end of the rotating shaft 6 and a spur rack 14 meshing with the gear 13. The spur rack 14 is fixedly mounted on the side of the elevator door 1. The setting of the power unit does not require an additional driving element to drive the rotation of the rotating shaft 6, and has the advantage of low cost.

[0023] Specifically, when the elevator door 1 is opened, the elevator door 1 slides relative to the door frame 2, and the spur rack 14 on the elevator door 1 is meshed with the gear 13, which can drive the two gears 13 in the groove 3 to rotate simultaneously, and under the action of the eccentric rod 7, the lever 8 and the vertical rod 9, the movable plate 4 is driven to reciprocate horizontally.

[0024] Example 2

[0025] This embodiment is improved on the basis of embodiment 1, specifically:

[0026] See also Figure 1 and Figure 4 In order to prevent the spur rack 14 from protruding from the elevator door 1 and causing scratches or scrapes on people, a strip groove 15 is further provided on the side of the elevator door 1 in this embodiment, and the spur rack 14 is installed in the strip groove 15.

[0027] Furthermore, in order to facilitate the inspection or maintenance of various components in the driving assembly, an inspection door 16 is further provided on the side of the door frame 2 corresponding to the groove 3 in this embodiment, and the inspection door 16 is detachably installed by screws.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An elevator door anti-dragging and hand-pinching mechanism, comprising an elevator door (1) and a door frame (2), characterized in that: A groove (3) is provided on a side of the door frame (2) close to the elevator door (1), a movable plate (4) is movably provided in the groove (3), a rubber plate (5) is installed on one side of the movable plate (4), the rubber plate (5) is slidably provided in the gap between the elevator door (1) and the door frame (2), a driving component for driving the movable plate (4) to reciprocate horizontally is also provided in the groove (3), the driving component comprises a rotating shaft (6), an eccentric rod (7), a lever (8), a vertical rod (9) and a power unit, the Two rotating shafts (6) are provided, and the two rotating shafts (6) are symmetrically rotatably arranged in the groove (3) through bearings, and eccentric rods (7) are symmetrically installed at adjacent ends of the two rotating shafts (6), and a shifting rod (8) is fixedly installed between the two eccentric rods (7). A plurality of vertical rods (9) are provided, and the plurality of vertical rods (9) are fixedly installed on the movable plate (4) at equal intervals, and a strip hole (10) is opened on the vertical rod (9) and is slidably matched with the shifting rod (8), and the power unit is used to provide power for the rotation of the rotating shaft (6).

2. The elevator door anti-drag and hand-pinching mechanism according to claim 1, characterized in that: A pair of guide rods (11) are symmetrically fixedly arranged in the groove (3), a sliding sleeve (12) is movably mounted on the guide rods (11), and the movable plate (4) is fixedly connected to the sliding sleeve (12).

3. The elevator door anti-drag and hand-pinching mechanism according to claim 1, characterized in that: The power unit comprises a gear (13) coaxially fixedly mounted on the end of a rotating shaft (6) and a spur rack (14) meshing with the gear (13); the spur rack (14) is fixedly mounted on the side of the elevator door (1).

4. The elevator door anti-drag and hand-crushing mechanism according to claim 3, characterized in that: The elevator door (1) is also provided with a strip groove (15) on the side surface, and the spur rack (14) is installed in the strip groove (15).

5. The elevator door anti-drag and hand-crushing mechanism according to claim 1, characterized in that: An inspection door (16) is also provided on the side of the door frame (2) at a position corresponding to the groove (3), and the inspection door (16) is detachably mounted by means of screws.

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