Combined sill of elevator door

Abstract

The utility model relates to a combined sill of an elevator door, which comprises an aluminum profile sill and a galvanized reinforcing plate, the middle part of the aluminum profile sill is concave inwards to form a chute cavity, the upper end of the chute cavity is provided with a left platform and a right platform, the bottom side of the left platform is provided with an anti-falling cavity, and the lower end of the chute cavity is provided with a small convex part; the galvanized reinforcing plate comprises a transverse plate and two side plates, the upper ends of the two side plates extend inwards to form a left top plate and a right top plate respectively, the left top plate is tightly attached to the anti-disengaging cavity of the left platform, the right top plate is tightly attached to the right platform, a large protruding part is arranged on the transverse plate, and protruding small protruding rings are arranged at the two corners of the small protruding part respectively. The two corners of the large protruding part are respectively provided with a large protruding ring, and the small protruding rings are embedded in the large protruding rings. The small convex ring is embedded in the large convex ring, so that the aluminum profile sill and the galvanized reinforcing plate form a mutually embedded connecting structure at the extrusion position, and the novel structure does not damage the plate body, and is high in mechanical strength and simple and convenient to produce.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a combined sill for elevator doors. Background Art

[0002] Traditional elevator door combination sills are generally made of one-piece all-aluminum alloy or cast iron. In order to meet the pressure resistance requirements, the elevator door combination sills use thicker solid metal materials, which consumes a lot of materials and causes relatively high manufacturing costs.

[0003] For example, the utility model patent "Combined elevator sill" with patent number "200720109027.X" published on the national intellectual property website has the following main structure: at least one groove is provided under the sill body for the end of the mounting substrate to be inserted or embedded, and at least one end of the mounting substrate is provided with a bending section that matches the groove under the sill body. However, the bottom surface of the door slide groove of the sill body of the patent is not connected to the mounting substrate. Since the door slide groove is subjected to long-term pressure from people and goods entering and exiting the elevator door, and the bottom surface of the door slide groove is not strong enough, it is easy to deform. In addition, the combined sill body and the mounting substrate are prone to displacement in the length direction and lateral direction after being impacted, resulting in unreliable products.

[0004] China Patent Publication (Announcement) No.: CN201530657U, Patent Title: Elevator Combined Sill. It discloses the technical solution of "

[0014] The utility model of the elevator combined sill includes a sill body 1 and a support plate 4, the sill body 1 is recessed into a door slide 2, a slot 3 is provided at at least one end of the sill body, and the support plate 4 is embedded in the slot 3 to form a frame structure with the sill body 1.

[0015] The bottom surface of the door slide 2 formed by the recess of the sill body 1 is connected with the horizontal part of the support plate 4.

[0016] The bottom surface of the door slide 2 extends to at least one side to form a connecting block 7, and the connecting block 7 is fixedly connected to the support plate 4 by a fastener 8". The fastener 8 connects the two layers of board materials of the support plate 4 and the sill body 1 into an integrated structure. However, the method of fixing with fasteners requires firstly drilling holes in the two layers of boards respectively, and then connecting them with bolts and nuts or ordinary rivets, etc., which has many process steps and complicated production. Summary of the invention

[0005] The purpose of the utility model is to provide an elevator door combined sill to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical measures: a combined sill of an elevator door, which includes an aluminum profile sill and a galvanized reinforcement plate, the middle part of the aluminum profile sill is concave to form a slide groove cavity, one side of the upper end of the slide groove cavity is connected to a left platform, and the other side is connected to a right platform, an anti-slip cavity is arranged on the bottom side of the left platform, and a small protrusion is arranged at the lower end of the slide groove cavity; a galvanized reinforcement plate is arranged below the aluminum profile sill, the galvanized reinforcement plate includes a horizontal plate and two side plates, a left top plate and a right top plate are respectively extended inwardly from the upper ends of the two side plates, the left top plate is closely attached to the anti-slip cavity of the left platform, the right top plate is closely attached to the right platform, a large protrusion is arranged on the horizontal plate, and the large protrusion can just accommodate the small protrusion; the two corners of the small protrusion are respectively provided with protruding small protrusion rings, and the two corners of the large protrusion are respectively provided with protruding large protrusion rings, and the small protrusion ring is embedded in the large protrusion ring.

[0007] Compared with the prior art, the utility model has the advantages that the small convex ring is embedded in the large convex ring, so that the two plates of the aluminum profile sill and the galvanized reinforcement plate form a mutually embedded connection structure at the extrusion point, replacing the fastener connection structure in the traditional technology. This new structure does not damage the plate body, has high mechanical strength and is easy to produce.

[0008] As an improvement of the utility model, a barb is provided in the slide groove cavity. The purpose of selecting this design is that the barb is used in conjunction with the door slider. When the elevator door is hit by external force, the door slider can be hooked by the barb in the sill, thereby meeting the safety design requirements of the elevator door.

[0009] As an improvement of the utility model, the transverse plate of the galvanized reinforcing plate is vertically connected to the side plate. The purpose of selecting this design is to enhance the strength of the galvanized reinforcing plate.

[0010] As an improvement of the utility model, the aluminum profile sill and the galvanized reinforcement plate have the same plate thickness. The purpose of selecting this design is that the two plates have the same thickness so that after they are combined, the overall strength will not have a "bucket effect". BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0012] In the attached picture:

[0013] Figure 1 It is a schematic diagram of the combined sill of the elevator door according to the utility model.

[0014] Figure 2 It is an enlarged view of the A part described in the present utility model.

[0015] Figure 3 The utility model is a schematic diagram of the structure of the aluminum profile sill.

[0016] Figure 4 It is a structural schematic diagram of the galvanized reinforcement plate described in the utility model.

[0017] Figure 5 It is a schematic diagram of riveting points when the combined sill of an elevator door described in the utility model is riveted without nails.

[0018] Figure 6 It is a structural schematic diagram of a traditional combined sill 1 described in the utility model.

[0019] Figure 7 It is a structural schematic diagram of a traditional combined sill 2 described in the utility model.

[0020] Explanation of the reference numerals in the accompanying drawings: 1. Aluminum profile sill; 2. Galvanized reinforcement plate; 3. Slide cavity; 4. Left platform; 5. Right platform; 6. Anti-slip cavity; 7. Small protrusion; 8. Horizontal plate; 9. Side plate; 10. Left top plate; 11. Right top plate; 12. Large protrusion; 13. Bottom plate; 14. Small protruding ring; 15. Large protruding ring; 16. Barb; 17. Riveting punch; 18. Riveting die; 19. Sill body; 20. Base plate; 21. Sill main body; 22. Fastener; 23. Support plate. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1

[0023] Please refer to Figure 1 -7.

[0024] The present embodiment provides a combined sill for an elevator door, which includes an aluminum profile sill 1 and a galvanized reinforcement plate 2. The aluminum profile sill 1 is concave in the middle to form a chute cavity 3. The upper end of the chute cavity 3 is connected to a left platform 4 on one side and to a right platform 5 on the other side. An anti-slip cavity 6 is provided on the bottom side of the left platform 4. The lower end of the chute cavity 3 is a bottom plate 13, and a small protrusion 7 is provided on the bottom plate 13. A galvanized reinforcement plate 2 is provided below the aluminum profile sill 1.

[0025] This embodiment provides an elevator door combination sill, please refer to Figure 4The galvanized reinforcing plate 2 includes a transverse plate 8 and two side plates 9. A left top plate 10 and a right top plate 11 extend inward from the upper ends of the two side plates 9 respectively. The left top plate 10 is tightly attached to the anti-slip cavity 6 of the left platform 4, which can prevent the galvanized reinforcing plate 2 from moving in the horizontal direction to a certain extent. The right top plate 11 is tightly attached to the right platform 5. A large protrusion 12 is provided on the transverse plate 8, and the large protrusion 12 can just accommodate the small protrusion 7.

[0026] This embodiment provides an elevator door combination sill, please refer to Figure 1 and Figure 2 The two corners of the small protrusion 7 are respectively provided with protruding small protrusion rings 14 , and the two corners of the large protrusion 12 are respectively provided with protruding large protrusion rings 15 , and the small protrusion ring 14 is embedded in the large protrusion ring 15 .

[0027] This embodiment provides an elevator door combination sill, please refer to Figure 3 The chute cavity 3 is provided with a barb 16. The barb 16 is used in conjunction with a door slider. When the elevator door is hit by an external force, the door slider can be hooked by the barb 16 in the sill, thereby meeting the safety design requirements of the elevator door.

[0028] Furthermore, the transverse plate 8 of the galvanized reinforcing plate 2 and the side plates 9 are vertically connected to each other to enhance the strength of the galvanized reinforcing plate 2.

[0029] Furthermore, the aluminum profile sill 1 has the same thickness as the galvanized reinforcing plate 2. The same thickness of the two plates allows them to be combined without a "bucket effect" in overall strength, that is, the strength depends on the thin plate.

[0030] For traditional elevator combined sill, please refer to Figure 6 The combined sill is formed by a sill body 19 and a mounting base plate 20 being clamped together. However, when such a structure is subjected to impact in the length direction and the lateral direction, the sill body 19 and the mounting base plate 20 are easily displaced.

[0031] Another traditional elevator combined sill, please refer to Figure 7 The support plate 23 and the sill body 21 are connected into an integrated structure by fasteners 22, and a cylindrical solid rivet with a rivet head at one end is embedded. In most cases, the rivet is manually fed and placed. After placement, the tail end of the rivet is deformed to form a tight connection. This connection method requires pre-processing holes, adding rivets, poor automation, and drilling will damage the mechanical strength of the plate.

[0032] The present embodiment provides a combined elevator door sill, which uses a gas-liquid booster cylinder stamping device and a die. In a stamping process, the aluminum profile sill 1 and the galvanized reinforcement plate 2 form a mutually inlaid circular connection point at the extrusion point according to the extrusion plastic deformation of the plate material itself, thereby connecting the two plates. There is no microscopic damage or stress concentration at the riveting point, the material at the connection point is cold-worked and hardened, the structure is finer, the mechanical properties are improved, and it has excellent dynamic fatigue connection strength.

[0033] This embodiment provides an elevator door combination sill, please refer to Figure 5 The riveting punch 17 presses down the bottom plate 13 of the aluminum profile sill 1, and presses the galvanized reinforcement plate 2 into the riveting die 18 together. The materials of the two layers of plates "flow" in the riveting die 18 according to the plastic cold extrusion deformation of the plates themselves, and are pressed from a straight shape to a curved shape. The riveting punch 17 continues to apply pressure to produce a rivet point between the upper and lower plates that is interlocked and inlaid with each other and has shear and tensile riveting strength. A small convex ring 14 is extruded at the corner of the aluminum profile sill 1, and a large convex ring 15 is extruded at the corner of the galvanized reinforcement plate 2, and an inlaid connection is formed. Because the two plates of different materials are interlocked with each other at the corners, the upper, lower, left and right positions, the inlaid connection formed by pressure riveting will not fall off.

[0034] This new type of inlay structure formed by riveting does not require auxiliary materials or heating. Through the cold forming process, a mutually inlaid rivet point can be formed between two layers of metal plates. The production is simple and fast, and the plate material itself is connected efficiently and firmly by using its plastic deformation. The advantages of this new structure are: 1: saving labor costs, time and labor; 2: the two layers of material fit more firmly and have higher strength (bolts or rivets and other fasteners 22 may loosen when fixed under long-term stress).

[0035] Compared with the prior art, the utility model has the following beneficial effects: the small convex ring 14 is embedded in the large convex ring 15, so that the two plates of the aluminum profile sill 1 and the galvanized reinforcement plate 2 form a mutually embedded connection structure at the extrusion point, replacing the fastener connection structure in the traditional technology. This new structure does not damage the plate body, has high mechanical strength and is easy to produce.

[0036] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An elevator door combination sill, characterized by: The invention comprises an aluminum profile sill (1) and a galvanized reinforcing plate (2), wherein the aluminum profile sill (1) is concave in the middle to form a chute cavity (3), one side of the upper end of the chute cavity (3) is connected to a left platform (4), and the other side is connected to a right platform (5), an anti-slip cavity (6) is arranged on the bottom side of the left platform (4), and a small protrusion (7) is arranged at the lower end of the chute cavity (3); a galvanized reinforcing plate (2) is arranged below the aluminum profile sill (1), and the galvanized reinforcing plate (2) comprises a horizontal plate (8) and two side plates (9), and the upper ends of the two side plates (9) are respectively extended inwards. A left top plate (10) and a right top plate (11) are extended, the left top plate (10) is closely attached to the anti-slip cavity (6) of the left platform (4), and the right top plate (11) is closely attached to the right platform (5). A large protrusion (12) is arranged on the horizontal plate (8), and the large protrusion (12) can just accommodate the small protrusion (7); the two corners of the small protrusion (7) are respectively provided with protruding small protrusion rings (14), and the two corners of the large protrusion (12) are respectively provided with protruding large protrusion rings (15), and the small protrusion ring (14) is embedded in the large protrusion ring (15).

2. The combined elevator door sill according to claim 1, characterized in that: A barb portion (16) is provided in the slide groove cavity (3).

3. The combined sill of an elevator door according to claim 1, characterized in that: The transverse plate (8) of the galvanized reinforcing plate (2) and the side plate (9) are vertically connected to each other.

4. The combined elevator door sill according to claim 1, characterized in that: The aluminum profile sill (1) and the galvanized reinforcement plate (2) have the same plate thickness.

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