Elevator door mechanism and door stopper

Abstract

To provide an elevator door device and a door dislocation prevention tool capable of more reliably preventing a door panel from being dislocated from a threshold groove by using a simple configuration.SOLUTION: A dislocation prevention tool body 28 has an attachment portion 28a, an insertion portion 28b, and a plurality of protrusions 28c. The insertion portion 28b protrudes downward from the lower end of a door panel 23 and is inserted into a threshold groove 25a. Each of the protrusions 28c protrudes from the insertion portion 28b toward a second wall surface 25c. Each of the protrusions 28c is pressed against the second wall surface 25c to bite into the second wall surface 25c and plastically deform the second wall surface 25c.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present disclosure relates to an elevator door device and a door detachment prevention device.

Background Art

[0002] In a conventional elevator door detachment prevention device, support brackets are attached to the lower parts of the door panels of the car door and the landing door, respectively. In addition, stoppers are provided on each of the car and the hoistway wall (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional elevator door detachment prevention device as described above, when the door panel is curved by an external force and the lower end of the door panel tries to lift from the threshold, the support bracket may slide with respect to the stopper, and the support bracket may come off from the stopper. [[ID=�6]]

[0005] The present disclosure has been made to solve the above problems, and an object thereof is to obtain an elevator door device and a door detachment prevention device that can more reliably suppress the detachment of the door panel from the threshold groove with a simple configuration.

Means for Solving the Problems

[0006] The elevator door device according to this disclosure comprises a door panel, a sill provided below the door panel and having a sill groove, and a retaining body attached to the door panel, and includes a door retaining device that prevents the door panel from coming off the sill groove, the sill groove having a first wall surface and a second wall surface facing the first wall surface, and the retaining body having a mounting portion attached to the door panel, an insertion portion that protrudes downward from the lower end of the door panel and is inserted into the sill groove, and a projection that protrudes from the insertion portion toward the second wall surface and bites into the second wall surface when pressed against it. The elevator door stopper according to this disclosure comprises a stopper body that is attached to the door panel, the stopper body having a mounting portion that is attached to the door panel, an insertion portion that protrudes downward from the lower end of the door panel and is inserted into the sill groove, and a projection provided in the insertion portion that bites into the wall surface of the sill groove when pressed against it. [Effects of the Invention]

[0007] According to the elevator door device and door stopper of this disclosure, a simple configuration can more reliably prevent the door panel from coming off the threshold groove. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing an elevator according to Embodiment 1. [Figure 2] Figure 1 is a front view showing the schematic configuration of the car door device and landing door device. [Figure 3] This is a side view showing the main parts of Figure 2. [Figure 4] This is a cross-sectional view along the line IV-IV in Figure 3. [Figure 5] This is a cross-sectional view of the lower end of the door body and the threshold along the VV line in Figure 4. [Figure 6] Figure 4 is a front view showing the retaining clip body. [Figure 7] Figure 6 is a side view showing the retaining clip body. [Figure 8] Figure 3 is a side view showing the door panel in a curved state. [Figure 9] Figure 5 is a cross-sectional view showing the projection pressed against the second wall surface. [Figure 10] This is a side view showing the main parts of the elevator door device according to Embodiment 2. [Figure 11] Figure 10 is a front view showing the retaining mechanism. [Figure 12] Figure 11 is a side view showing the retaining mechanism. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. Embodiment 1. Figure 1 is a schematic diagram showing an elevator according to Embodiment 1. In the figure, a machine room 2 is provided above the hoistway 1. The machine room 2 houses a hoisting machine 3, a deflector wheel 4, and an elevator control device 5.

[0010] The hoisting machine 3 includes a drive sheave 6, a hoisting machine motor (not shown), and a hoisting machine brake (not shown). The hoisting machine motor rotates the drive sheave 6. The hoisting machine brake maintains the drive sheave 6 in a stationary state. The hoisting machine brake also brakes the rotation of the drive sheave 6.

[0011] A suspension system 7 is wrapped around the drive sheave 6 and the deflector wheel 4. The suspension system 7 is made up of multiple ropes or multiple belts. A cage 8 is connected to the first end of the suspension system 7. A counterweight 9 is connected to the second end of the suspension system 7.

[0012] The elevator car 8 and counterweight 9 are suspended by the suspension body 7 and move up and down within the hoistway 1 by rotating the drive sheave 6. The elevator control device 5 controls the operation of the elevator car 8 by controlling the hoisting machine 3.

[0013] Inside the hoistway 1, a pair of car guide rails (not shown) and a pair of counterweight guide rails (not shown) are installed. The pair of car guide rails guide the ascent and descent of the car 8. The pair of counterweight guide rails guide the ascent and descent of the counterweight 9.

[0014] The car 8 has a car frame 10 and a car compartment 11. The suspension body 7 is connected to the car frame 10. The car compartment 11 is supported by the car frame 10. On the front surface of the car compartment 11, a car door device 12, which is an elevator door device, is provided.

[0015] On the car 8, a door controller 13 is provided. The door controller 13 controls the opening and closing operations of the car door device 12.

[0016] At each landing of multiple floors, a landing door device 14, which is an elevator door device, is provided. Each landing door device 14 operates to open and close in联动 with the car door device when the car 8 lands.

[0017] Figure 2 is a front view showing the schematic configuration of the car door device 12 and the landing door device 14 in Figure 1, and shows the configuration common to the car door device 12 and the landing door device 14.

[0018] Each of the car door device 12 and the landing door device 14 has a door frame 21, a pair of door bodies 22, and a sill 25.

[0019] The door frame 21 is provided above the elevator entrance 20. The elevator entrance 20 where the car door device 12 is provided is the car entrance, and is provided on the front surface of the car compartment 11. The elevator entrance 20 where the landing door device 14 is provided is the landing entrance, and is provided between the landing and the hoistway 1.

[0020] The elevator entrance 20 is opened and closed by a pair of door bodies 22. A door rail 21a is provided on the door frame 21. The pair of door bodies 22 are suspended from the door rail 21a and open and close by being guided by the door rail 21a.

[0021] Each door body 22 has a door panel 23 and a door hanger 24. The door hanger 24 is fixed to the top of the door panel 23. The door hanger 24 is provided with multiple hanger rollers 24a. Each hanger roller 24a moves along the door rail 21a while rolling during the opening and closing operation of the door body 22.

[0022] The threshold 25 is located below the door panel 23 and is provided on the floor of the elevator entrance 20.

[0023] Figure 3 is a side view showing the main part of Figure 2. Figure 4 is a cross-sectional view along line IV-IV in Figure 3. Figure 5 is a cross-sectional view of the lower end of the door body 22 and the sill 25 along line VV in Figure 4.

[0024] Each door panel 23 has a front surface 23a and a back surface 23b. The front surface 23a is the design surface visible to the user. In the car door device 12, the front surface 23a of each door panel 23 is the surface facing into the car compartment 11. In the landing door device 14, the front surface 23a of each door panel 23 is the surface facing the landing.

[0025] The rear surface 23b is the side of each door panel 23 opposite to the front surface 23a. When the car 8 is resting on the landing, the rear surface 23b of each door panel 23 in the car door device 12 faces the rear surface 23b of each door panel 23 in the corresponding landing door device 14.

[0026] Although not shown in Figure 2, the threshold 25 is provided with a threshold groove 25a. The threshold groove 25a opens on the upper surface of the threshold 25. Furthermore, the threshold groove 25a is provided along the opening and closing direction of the door body 22. As a result, the threshold groove 25a guides the lower end of the door body 22 when it is opened or closed.

[0027] The threshold groove 25a has a first wall surface 25b, a second wall surface 25c, and a bottom surface 25d. The first wall surface 25b and the second wall surface 25c are each vertical surfaces and face each other.

[0028] The first wall surface 25b is located on the front side 23a side of the second wall surface 25c in the thickness direction of the door panel 23. The second wall surface 25c is located on the back side 23b side of the first wall surface 25b in the thickness direction of the door panel 23. The thickness direction of the door panel 23 is perpendicular to the front side 23a, which is the left-right direction in Figure 3.

[0029] Multiple door legs 26 and door stoppers 27 are attached to the lower end of the door panel 23. Each door leg 26 is inserted into the threshold groove 25a.

[0030] The door stopper 27 prevents the legs 26 of multiple doors from coming out of the sill grooves 25a, that is, prevents the door panel 23 from coming out of the sill grooves 25a. The door stopper 27 also has a stopper body 28 and multiple fasteners 29.

[0031] The retaining body 28 is fixed to the door panel 23 by a plurality of fasteners 29. For example, bolts are used as fasteners 29. A reinforcing section (not shown) is provided at the lower end of the door panel 23, and the retaining body 28 is fixed to this reinforcing section. The retaining body 28 is also positioned in the center of the door panel 23 in the opening and closing direction of the door body 22.

[0032] The retaining body 28 has a mounting portion 28a, an insertion portion 28b, and a plurality of protrusions 28c. The mounting portion 28a is the part of the retaining body 28 that is attached to the door panel 23.

[0033] The insertion portion 28b protrudes downward from the lower end of the door panel 23 and is inserted into the threshold groove 25a. The insertion portion 28b also faces the first wall surface 25b and the second wall surface 25c with a gap in between. The lower end of the insertion portion 28b is separated from the bottom surface 25d.

[0034] Each projection 28c protrudes from the insertion portion 28b toward the second wall surface 25c. The tip of each projection 28c faces the second wall surface 25c with a gap in between. However, each projection 28c bites into the second wall surface 25c when pressed against it, causing plastic deformation of the second wall surface 25c.

[0035] Figure 6 is a front view showing the retaining body 28 of Figure 4. Figure 7 is a side view showing the retaining body 28 of Figure 6. The mounting portion 28a is provided with a plurality of holes 28d. A corresponding fastener 29 is passed through each hole 28d.

[0036] The shape of the tip of each projection 28c facing the second wall surface 25c is a cone, for example. That is, the tip of each projection 28c is pointed. The hardness of the material constituting each projection 28c is higher than the hardness of the material constituting the threshold groove 25a, i.e., the material of the threshold 25.

[0037] In such car door devices 12 and landing door devices 14, even if an impact force is applied to the door panel 23 from the front 23a side, and the door panel 23 bends so that the front 23a becomes concave, as shown in Figure 8, it is required that the legs 26 of each door do not come out of the sill groove 25a.

[0038] In contrast, in Embodiment 1, as shown in Figure 9, the tips of each projection 28c bite into the second wall surface 25c and catch on the second wall surface 25c, thereby suppressing the door panel 23 from lifting off the sill 25. This prevents the door legs 26 from coming out of the sill groove 25a.

[0039] Therefore, according to Embodiment 1, the door panel 23 can be more reliably prevented from coming off the threshold groove 25a with a simple configuration.

[0040] Furthermore, the hardness of the material constituting each projection 28c is higher than the hardness of the material constituting the threshold groove 25a. As a result, each projection 28c can be more reliably engaged with the second wall surface 25c, and the detachment of the door panel 23 from the threshold groove 25a can be more reliably suppressed.

[0041] Furthermore, since the tips of each projection 28c are pointed, each projection 28c can be more reliably engaged with the second wall surface 25c, thereby further reliably preventing the door panel 23 from coming off the threshold groove 25a.

[0042] The number of protrusions 28c is not particularly limited.

[0043] Furthermore, the multiple protrusions 28c may be arranged in two or more rows with spacing between them in the vertical direction.

[0044] Furthermore, the number of retaining clips 27 attached to a single door panel 23 may be two or more.

[0045] Embodiment 2. Next, Figure 10 is a side view showing the main parts of the elevator door device according to Embodiment 2. The door stopper 31 of Embodiment 2 has a stopper body 32 and a plurality of fasteners 33.

[0046] The retaining body 32 is fixed to the door panel 23 by a plurality of fasteners 33. For example, bolts are used as fasteners 33. The retaining body 32 is fixed to the end face of the door panel 23 in the opening and closing direction of the door body 22.

[0047] The retaining body 32 has a mounting portion 32a, an insertion portion 32b, and a projection portion 32c. The mounting portion 32a is the part of the retaining body 32 that is attached to the door panel 23.

[0048] The insertion portion 32b protrudes downward from the lower end of the door panel 23 and is inserted into the threshold groove 25a. The insertion portion 32b is also opposite the first wall surface 25b and the second wall surface 25c with a gap in between. The lower end of the insertion portion 32b is separated from the bottom surface 25d.

[0049] The projection 32c protrudes from the insertion portion 32b toward the second wall surface 25c. The tip of the projection 32c faces the second wall surface 25c with a gap in between. However, the projection 32c bites into the second wall surface 25c when pressed against it.

[0050] Figure 11 is a front view showing the retaining body 32 of Figure 10. Figure 12 is a side view showing the retaining body 32 of Figure 11. The mounting portion 32a is provided with a plurality of holes 32d. A corresponding fastener 33 is passed through each hole 32d.

[0051] The shape of the tip of the projection 32c, when viewed along the opening and closing direction of the door body 22, is triangular. That is, the tip of the projection 32c is pointed. The hardness of the material constituting the projection 32c is higher than the hardness of the material constituting the threshold groove 25a.

[0052] Other configurations in Embodiment 2 are the same as those in Embodiment 1.

[0053] Even with this configuration, if an impact force is applied to the door panel 23 from the front 23a side and the door panel 23 bends, the tip of the projection 32c bites into the second wall surface 25c, thereby suppressing the door panel 23 from lifting off the sill 25. Therefore, with a simple configuration, it is possible to more reliably prevent the door panel 23 from coming off the sill groove 25a.

[0054] Furthermore, the hardness of the material constituting the projection 32c is higher than the hardness of the material constituting the threshold groove 25a. Therefore, the projection 32c can be more reliably engaged with the second wall surface 25c, and the detachment of the door panel 23 from the threshold groove 25a can be more reliably suppressed.

[0055] Furthermore, because the tip of the projection 32c is pointed, it can be more reliably engaged with the second wall surface 25c, thereby further reliably preventing the door panel 23 from coming off the threshold groove 25a.

[0056] In the second embodiment, the door stopper 32 may be attached to both end faces of the door panel 23 in the opening and closing direction of the door body 22, or it may be attached to only one end face.

[0057] Furthermore, both the door stopper 27 of Embodiment 1 and the door stopper 31 of Embodiment 2 may be attached to a single door panel 23.

[0058] Furthermore, the door stoppers 27 and 31 may be attached to both the car door device 12 and the landing door device 14, or they may be attached to only one of the car door device 12 or the landing door device 14.

[0059] Furthermore, the opening and closing mechanism of the elevator door may be either a center-opening type or a single-opening type.

[0060] Furthermore, the number of door panels 23 in the elevator door system may be one or three or more.

[0061] Furthermore, the type of elevator is not limited to the type shown in Figure 1; for example, a 2:1 roping system may also be used.

[0062] Furthermore, the elevator may be a machine-room-less elevator, a double-deck elevator, or a single-shaft multi-car elevator. In a single-shaft multi-car elevator, the upper car and the lower car, located directly below the upper car, each move independently up and down a common hoistway. [Explanation of Symbols]

[0063] 12 Cage door device, 14 Landing door device, 23 Door panel, 25 Threshold, 25a Threshold groove, 25b First wall surface, 25c Second wall surface, 27, 31 Door release stopper, 28, 32 Stopper body, 28a, 32a Mounting part, 28b, 32b Insertion part, 28c, 32c Projection part.

Claims

1. Door panel, A threshold provided below the aforementioned door panel, having a threshold groove, and A door stopper having a stopper body attached to the door panel, which prevents the door panel from coming off the threshold groove. Equipped with, The threshold groove has a first wall surface and a second wall surface opposite to the first wall surface. The aforementioned retaining body is The mounting portion attached to the aforementioned door panel, An insertion portion that protrudes downward from the lower end of the door panel and is inserted into the threshold groove, Multiple protrusions are provided at intervals from each other in the opening and closing direction of the door panel, protruding from the insertion portion toward the second wall surface, and biting into the second wall surface when pressed against it. It has, The shape of the tip of each of the aforementioned protrusions is a cone shape, according to the elevator door device.

2. Door panel, A threshold provided below the aforementioned door panel, having a threshold groove, and A door stopper having a flat plate-shaped stopper body attached to the end face of the door panel in the opening and closing direction of the door panel, which prevents the door panel from coming off the threshold groove. Equipped with, The threshold groove has a first wall surface and a second wall surface opposite to the first wall surface. The aforementioned retaining body is The mounting portion attached to the aforementioned door panel, An insertion portion that protrudes downward from the lower end of the door panel and is inserted into the threshold groove, A projection extends from the insertion portion toward the second wall surface and, when pressed against the second wall surface, bites into the second wall surface. It has, The shape of the tip of the aforementioned projection is triangular. The tip of the aforementioned projection is a pointed elevator door device.

3. The elevator door device according to claim 1 or claim 2, wherein the hardness of the material constituting the projection is higher than the hardness of the material constituting the threshold groove.

4. Door panel mounting stopper Equipped with, The aforementioned retaining body is A mounting portion that is attached to the aforementioned door panel, An insertion portion that protrudes downward from the lower end of the door panel and is inserted into the threshold groove, Multiple protrusions are provided in the insertion portion at intervals from each other in the opening and closing direction of the door panel, and when pressed against the wall surface of the threshold groove, they bite into the wall surface. It has, The shape of the tip of each of the aforementioned protrusions is a cone shape, which is the shape of the elevator door stopper.

5. The elevator door stopper according to claim 4, wherein the hardness of the material constituting the projection is higher than the hardness of the material constituting the threshold groove.

6. The tip of the projection is pointed, as described in claim 4 or claim 5, for an elevator door stopper.

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