An anti-pinch device for elevator hall doors

Abstract

This utility model belongs to the field of elevator hall door technology, specifically an elevator hall door anti-pinch device, including a rectangular plate. The rectangular plate is provided with an anti-pinch mechanism, which includes: a blocking assembly, including a pair of sliding cavities opened at the bottom of the rectangular plate, and concave frames slidably connected to both sides of the rectangular plate through sliding holes. Concave blocks are fixed to the side walls of the concave frames. The rectangular plate is provided with an adjustment assembly for adjusting the position of the pair of concave blocks; and a fixing assembly, which is set at the top of the rectangular plate to fix the position of the concave blocks. This solves the problem that when workers are maintaining the elevator, they usually use a blocking object placed between two elevator doors to prevent them from being pinched by the elevator door. This object can fix the elevator door, but it generally does not have an adjustment function when blocking, and it is easy to deviate, making it difficult to form an effective blocking mechanism.

Description

Technical Field

[0001] This utility model belongs to the field of elevator hall door technology, specifically an anti-pinch device for elevator hall doors. Background Technology

[0002] An elevator is a vertical transportation device powered by an electric motor. It is mainly used to carry people or goods between different floors in a building. In elevator maintenance scenarios, workers need to frequently enter the shaft or car top to work. If the elevator hall door closes accidentally at this time, it can easily cause safety accidents such as pinching or falling.

[0003] In the existing technology, when workers maintain elevators, they usually use a barrier placed between the two elevator doors to prevent themselves from being caught in the elevator doors, so that the doors can be fixed. However, the barrier generally does not have an adjustment function, and it is easy to shift, making it difficult to form an effective barrier.

[0004] Therefore, this utility model provides an anti-pinch device for elevator hall doors. Utility Model Content

[0005] To address the shortcomings of existing technology and solve the problem that workers often use barriers between elevator doors to prevent them from getting caught in the doors during elevator maintenance, these barriers typically lack adjustment capabilities, making them prone to shifting and failing to provide effective protection.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The elevator hall door anti-pinch device of this utility model includes a rectangular plate, and an anti-pinch mechanism is provided on the rectangular plate. The anti-pinch mechanism includes: a blocking assembly, including a pair of sliding cavities opened at the bottom of the rectangular plate, concave frames slidably connected to both sides of the rectangular plate through sliding holes, concave blocks fixed to the side walls of the concave frames, and an adjusting assembly for adjusting the position of the pair of concave blocks provided on the rectangular plate; and a fixing assembly, provided at the top of the rectangular plate for fixing the position of the concave blocks.

[0007] Preferably, the adjusting assembly includes a bidirectional lead screw rotatably connected to a rectangular plate, and the bidirectional lead screw is located between opposite sidewalls of the concave frame. A first sliding block is slidably connected in the sliding cavity. The first sliding block is threadedly connected to the bidirectional lead screw through a first threaded hole. The concave frame is fixed to the sidewall of the first sliding block.

[0008] Preferably, the rectangular plate has a groove at the bottom and a rectangular hole at the top, the rectangular hole being connected to the groove, and a first gear is fixedly connected to the bidirectional lead screw, with the first gear located inside the groove.

[0009] Preferably, a pair of fixing blocks are fixedly connected to the top of the rectangular plate, and a rotating rod is rotatably connected to the pair of fixing blocks through a pair of rotating holes. A second gear is fixedly connected to one end of the rotating rod, and the second gear meshes with the first gear.

[0010] Preferably, the fixing component includes a chuck wheel fixedly connected to the end of the rotating rod away from the second gear, an L-shaped block fixedly connected to the top of the rectangular plate, a sliding groove provided on the L-shaped block, a second sliding block slidably connected in the sliding groove, a locking block fixedly connected to the side wall of the second sliding block, and a bolt threadedly connected to the lateral end of the L-shaped block through a second threaded hole, the bottom of the bolt being rotatably connected to the top of the locking block.

[0011] Preferably, a concave strip is fixedly connected to the top of the rectangular plate, and a fixing strip is rotatably connected between the opposite sidewalls of the concave strip via a first rotating shaft. A protective shell is fixedly connected to the sidewall of the fixing strip.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The elevator hall door anti-pinch device described in this utility model, through the adjustment component of bidirectional screw and gear transmission, allows the spacing of the concave blocks to be flexibly adapted to the width of common elevator hall doors, solving the problem that traditional fixed-size barriers "cannot block wide doors and cannot fit into narrow doors". A single set of devices can meet the elevator maintenance needs of different scenarios such as residences, shopping malls, and hospitals, eliminating the need for staff to carry multiple sets of barriers of different specifications, reducing the carrying burden, and avoiding barrier failure due to differences in door shape.

[0014] 2. The elevator hall door anti-pinch device described in this utility model can form a "rigid lock" through the toothed engagement of the locking block and the locking wheel, which can withstand strong lateral tension. Even if the hall door drive mechanism is accidentally started, the bidirectional lead screw will not reverse, and the spacing between the concave blocks remains stable. The threaded connection between the bolt and the L-shaped block further enhances the locking effect of the locking block and prevents the locking block from disengaging from the locking wheel due to vibration. Compared with traditional barriers that are fixed by friction alone, the stability is improved. Furthermore, the protective shell can protect the components and prevent damage to them. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a schematic diagram of the first gear in this utility model;

[0018] Figure 3 This is a schematic diagram of the bidirectional lead screw in this utility model;

[0019] Figure 4 yes Figure 1 Enlarged view of A in the middle;

[0020] In the diagram: 1. Rectangular plate; 2. Sliding cavity; 3. Concave frame; 4. Concave block; 5. Two-way lead screw; 6. First sliding block; 7. Groove; 8. Rectangular hole; 9. First gear; 10. Fixing block; 11. Rotating rod; 12. Second gear; 13. Picking wheel; 14. L-shaped block; 15. Sliding groove; 16. Second sliding block; 17. Locking block; 18. Bolt; 19. Concave strip; 20. Fixing strip; 21. Protective shell. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 4 As shown, an anti-pinch device for an elevator hall door according to an embodiment of the present invention includes a rectangular plate 1, on which an anti-pinch mechanism is provided. The anti-pinch mechanism includes: a blocking assembly, including a pair of sliding cavities 2 opened at the bottom of the rectangular plate 1, concave frames 3 slidably connected to both sides of the rectangular plate 1 through sliding holes, concave blocks 4 fixedly connected to the side walls of the concave frames 3, and an adjusting assembly for adjusting the position of the pair of concave blocks 4 provided on the rectangular plate 1; and a fixing assembly, provided at the top of the rectangular plate 1 for fixing the position of the concave blocks 4.

[0023] The adjustment assembly includes a bidirectional lead screw 5 rotatably connected to a rectangular plate 1, and the bidirectional lead screw 5 is located between opposite side walls of a concave frame 3. A first sliding block 6 is slidably connected in a sliding cavity 2. The first sliding block 6 is threadedly connected to the bidirectional lead screw 5 through a first threaded hole. The concave frame 3 is fixed to the side wall of the first sliding block 6.

[0024] A groove 7 is provided at the bottom of the rectangular plate 1, and a rectangular hole 8 is provided at the top of the rectangular plate 1. The rectangular hole 8 is connected to the groove 7. A first gear 9 is fixed on the bidirectional lead screw 5, and the first gear 9 is located in the groove 7.

[0025] A pair of fixing blocks 10 are fixedly attached to the top of the rectangular plate 1. A rotating rod 11 is rotatably connected to the pair of fixing blocks 10 through a pair of rotating holes. A second gear 12 is fixedly attached to one end of the rotating rod 11. The second gear 12 meshes with the first gear 9.

[0026] During operation, the spacing of the concave blocks 4 can be flexibly adapted to the width of common elevator hall doors by means of the adjustment components of the bidirectional lead screw 5 and gear transmission. This solves the problem that traditional fixed-size barriers cannot "block wide doors and cannot fit into narrow doors". A single set of devices can meet the elevator maintenance needs of different scenarios such as residences, shopping malls, and hospitals. There is no need for staff to carry multiple sets of barriers of different specifications, reducing the burden of carrying them and avoiding barrier failure due to differences in door shape.

[0027] The fixing assembly includes a chuck 13 fixed to one end of the rotating rod 11 away from the second gear 12, an L-shaped block 14 fixed to the top of the rectangular plate 1, a sliding groove 15 on the L-shaped block 14, a second sliding block 16 slidably connected in the sliding groove 15, a locking block 17 fixed to the side wall of the second sliding block 16, and a bolt 18 threadedly connected to one lateral end of the L-shaped block 14 through a second threaded hole, with the bottom of the bolt 18 rotatably connected to the top of the locking block 17.

[0028] A concave strip 19 is fixedly attached to the top of the rectangular plate 1. A fixing strip 20 is rotatably connected between the opposite side walls of the concave strip 19 via a first rotating shaft. A protective shell 21 is fixedly attached to the side wall of the fixing strip 20.

[0029] During operation, the toothed engagement between the locking block 17 and the locking wheel 13 forms a "rigid lock," which can withstand strong lateral tension. Even if the hall door drive mechanism is accidentally started, the bidirectional lead screw 5 will not reverse, and the spacing of the concave blocks 4 remains stable. The threaded connection between the bolt 18 and the L-shaped block further enhances the locking effect of the locking block 17, preventing the locking block 17 from disengaging from the locking wheel 13 due to vibration. Compared with traditional barriers that are fixed by friction alone, the stability is improved. Furthermore, the protective shell 21 can protect the components and prevent them from being damaged.

[0030] Working principle: When the staff needs to adjust the position of the concave block 4 according to the width of the elevator hall door, they rotate the rotating rod 11 at the top of the rectangular plate 1. The rotating rod 11 drives the second gear 12 fixed at one end to rotate. Since the second gear 12 meshes with the first gear 9 on the double-acting screw 5 (the first gear 9 is located in the groove 7 at the bottom of the rectangular plate 1, and the double-acting screw 5 is rotatably connected to the rectangular plate 1 and located between the opposite side walls of the concave frame 3), the rotation of the second gear 12 will synchronously drive the first gear 9 and the double-acting screw 5 to rotate. When the double-acting screw 5 rotates, the forward and reverse threads on its surface will drive the two first sliding blocks 6 in the sliding cavity 2 to move towards or away from each other (the sliding cavity 2 is opened at the bottom of the rectangular plate 1, and the first sliding blocks 6 are fixed to the concave frame 3). This causes the concave frame 3, which is slidably connected to both sides of the rectangular plate 1 through the sliding holes, to move synchronously, and finally realize the adjustment of the spacing of the concave blocks 4 fixed to the side walls of the concave frame 3. Staff can adjust the spacing of the concave blocks 4 to match the actual width of the hall door, ensuring that the concave blocks 4 can fit tightly against both sides of the hall door, forming an effective physical barrier.

[0031] After the spacing of the concave blocks 4 is adjusted to the correct position, rotate the bolt 18 at one end of the L-shaped block 14 (fixed to the top of the rectangular plate 1). Because the bolt 18 is threadedly connected to the threaded hole of the L-shaped block 14, and the bottom of the bolt 18 is rotatably connected to the top of the locking block 17, the rotation of the bolt 18 will push the locking block 17 to slide downward along the sliding groove 15 of the L-shaped block 14 until the locking block 17 is embedded in the tooth groove of the locking wheel 13 fixed to the other end of the rotating rod 11. At this time, the locking wheel 13 cannot rotate, thereby restricting the reverse rotation of the rotating rod 11, the second gear 12, the first gear 9 and the bidirectional lead screw 5, and preventing the concave blocks 4 from being displaced by external forces (such as the closing force of the hall door).

[0032] The protective shell 21 can prevent debris from touching the adjustment components during maintenance and causing accidental operation. On the other hand, it can provide physical protection for the adjustment components, avoid wear or corrosion of the components, and indirectly ensure the long-term reliability of the fixed structure.

[0033] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 limiting the scope of protection of this utility model. The basic principles, main features, and advantages of this utility model have been shown and described above. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator landing door anti-pinch device comprising a rectangular plate (1), characterized in that: The rectangular plate (1) is provided with an anti-pinch mechanism, which includes: The blocking assembly includes a pair of sliding cavities (2) opened at the bottom of a rectangular plate (1), and concave frames (3) are slidably connected to both sides of the rectangular plate (1) through sliding holes. Concave blocks (4) are fixed to the side walls of the concave frames (3). An adjustment assembly for adjusting the position of the pair of concave blocks (4) is provided on the rectangular plate (1). A fixing component is set on the top of the rectangular plate (1) to fix the position of the concave block (4).

2. An elevator landing door anti-pinch device according to claim 1, wherein: The adjustment assembly includes a bidirectional lead screw (5) rotatably connected to a rectangular plate (1), and the bidirectional lead screw (5) is located between opposite side walls of the concave frame (3). A first sliding block (6) is slidably connected in the sliding cavity (2). The first sliding block (6) is threadedly connected to the bidirectional lead screw (5) through a first threaded hole. The concave frame (3) is fixed to the side wall of the first sliding block (6).

3. An elevator landing door anti-pinch device according to claim 2, wherein: The rectangular plate (1) has a groove (7) at the bottom and a rectangular hole (8) at the top. The rectangular hole (8) is connected to the groove (7). A first gear (9) is fixed on the bidirectional lead screw (5) and the first gear (9) is located in the groove (7).

4. An elevator landing door anti-pinch device according to claim 3, wherein: A pair of fixing blocks (10) are fixedly connected to the top of the rectangular plate (1). A rotating rod (11) is rotatably connected to the pair of fixing blocks (10) through a pair of rotating holes. A second gear (12) is fixedly connected to one end of the rotating rod (11). The second gear (12) meshes with the first gear (9).

5. The elevator hoistway door anti-pinch device of claim 1, wherein: The fixing assembly includes a chuck (13) fixed to one end of the rotating rod (11) away from the second gear (12), an L-shaped block (14) fixed to the top of the rectangular plate (1), a sliding groove (15) is provided on the L-shaped block (14), a second sliding block (16) is slidably connected in the sliding groove (15), a locking block (17) is fixed to the side wall of the second sliding block (16), and a bolt (18) is threadedly connected to one end of the L-shaped block (14) through a second threaded hole, and the bottom of the bolt (18) is rotatably connected to the top of the locking block (17).

6. A door entrapment prevention device for an elevator landing door as defined in claim 1, wherein: A concave strip (19) is fixedly attached to the top of the rectangular plate (1), and a fixing strip (20) is rotatably connected between the opposite side walls of the concave strip (19) via a first rotating shaft. A protective shell (21) is fixedly attached to the side wall of the fixing strip (20).

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