A safety protection locking mechanism for indoor elevators

Abstract

The present invention relates to the field of household indoor elevators, and in particular to a safety protection locking mechanism for indoor elevators, comprising: an elastic plate, the middle section of which is connected to the top of the car; a lifting assembly, comprising two reversing pulleys, a reel, and a cable wound on the reel, respectively arranged at both ends of the elastic plate, the cable extending upward after being reversing at the reversing pulley, and the cable exerts an upward force from the reversing pulley to the end of the elastic plate, so that the elastic plate is bent and deformed, and the two ends of the elastic plate move upward; two locking members, respectively arranged at the two ends of the elastic plate, the locking member having a first state of stopping the movement of the car and a second state of releasing; wherein, when the end of the elastic plate moves downward beyond a set threshold, the elastic plate triggers the locking member to switch from the second state to the first state. The locking mechanism of the present invention can trigger the locking member through the elastic deformation of the elastic plate when the cable is disconnected, and brake and lock the car, effectively solving the problems existing in the prior art.

Description

Technical Field

[0001] The invention relates to the field of household indoor elevators, and in particular to a safety protection locking mechanism for indoor elevators. Background Art

[0002] As a small indoor elevator for home use, the home indoor elevator is widely used in villas with 2-3 floors. Considering that the space occupied by the home indoor elevator cannot be too large, the home indoor elevator generally sets a vertical guide rail without a shaft between the floors, and the driving device of the indoor elevator moves with the car of the indoor elevator. Specifically, a motor is used to drive a drum to retract and release two cables wound on two pulleys to achieve the lifting and lowering of the home indoor elevator. In the existing home indoor elevator, when the cable is disconnected, the car cannot be effectively braked, which not only poses a risk of the car falling, but also damages the components of the indoor elevator. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a safety protection locking mechanism for an indoor elevator, which can trigger the locking member through the elastic deformation of the elastic plate to brake and lock the car when the cable is disconnected, effectively solving the problems existing in the prior art.

[0004] In order to solve the above problems, the present invention provides a safety protection locking mechanism for an indoor elevator, comprising: an elastic plate, the middle section of which is connected to the top of a car; a lifting assembly, comprising two reversing pulleys, a drum, and a cable wound on the drum, respectively arranged at both ends of the elastic plate, the cable extending upward after being reversing at the reversing pulley, and the cable applies an upward force to the end of the elastic plate by the reversing pulley, so that the elastic plate is bent and deformed, and the two ends of the elastic plate move upward; two locking members, respectively arranged at the two ends of the elastic plate, the locking members having a first state for stopping the movement of the car and a second state for releasing the car; wherein, when the end of the elastic plate moves downward beyond a set threshold, the elastic plate triggers the locking member to switch from the second state to the first state.

[0005] Furthermore, the locking mechanism also includes two locking rods respectively arranged at both ends of the elastic plate, and the locking rods extend vertically; the locking member includes a locking ring sleeved on the locking rod, and when the locking member is in a first state, the inner wall of the locking ring abuts against the locking rod; when the locking member is in a second state, the axis of the locking ring is roughly coaxial with the axis of the locking rod, so that there is a gap between the inner wall of the locking ring and the locking rod.

[0006] Furthermore, the locking ring and the elastic plate are split structures, and a portion of the locking ring extends to the lower side of the elastic plate to form a limiting portion; the locking member also includes a connecting portion connected to the car, a supporting ring sleeved on the locking rod, and a spring; wherein the spring and the elastic plate abut against the upper and lower sides of the limiting portion so that the locking ring is roughly horizontally arranged on the top of the supporting ring, and the locking member is in the second state; when the end of the elastic plate moves downward beyond a set threshold, the elastic plate compresses the spring, and the locking ring tilts until the inner wall of the locking ring abuts and rubs against the locking rod, and the locking member is in the first state.

[0007] Furthermore, at least two abutment portions are provided between the elastic plate and the limiting portion and are spaced apart from each other along the extension direction of the elastic plate, and the two abutment portions are provided between the spring and the supporting ring.

[0008] Furthermore, two limiting columns are formed on the connecting portion, and the two limiting columns clamp the limiting portion to limit the horizontal movement of the limiting portion.

[0009] Furthermore, the locking ring includes an outer ring body having a mounting hole and an inner ring body arranged in the mounting hole, and the hardness of the inner ring body is smaller than the hardness of the outer ring body.

[0010] Furthermore, the cross section of the inner wall of the locking ring is in an outwardly convex arc shape, and a separation groove is provided around the middle section of the inner wall of the locking ring.

[0011] Furthermore, the supporting ring is a nylon supporting ring.

[0012] Furthermore, the locking mechanism also includes a fixed beam, a middle portion of the fixed beam is rotatably connected to the car, a middle section of the elastic plate is connected to the fixed beam, and the connecting portion is connected to the fixed beam.

[0013] Furthermore, the locking mechanism also includes a limit hook, which is arranged on the side of the reversing pulley toward the center of the elastic plate, and the limit hook abuts against the upper surface of the elastic plate to limit the upward movement of the elastic plate at the abutment position with the limit hook.

[0014] The beneficial effect of the present invention is that the present invention provides a safety protection locking mechanism for an indoor elevator, which can trigger the locking member through the elastic deformation of the elastic plate to brake and lock the car when the cable is disconnected, effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A schematic diagram of the structure of the elastic plate in the illustrated embodiment.

[0018] Figure 3 for Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 4 for Figure 1 The side cross-sectional structure diagram of the locking member in the second state in the illustrated embodiment.

[0020] Figure 5 for Figure 1 The side cross-sectional structure diagram of the locking member in the illustrated embodiment is in the first state.

[0021] Among them: 1. elastic plate; 2. car; 3. reversing pulley; 4. drum; 5. cable; 6. locking rod; 7. locking ring; 701. outer ring body; 702. inner ring body; 8. limiting part; 9. connecting part; 10. supporting ring; 11. spring; 12. limiting column; 13. dividing groove; 14. fixing beam; 15. limiting hook; 16. protrusion; 17. screw. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0023] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0027] In the present invention, if Figure 1-5 As shown in, a safety protection locking mechanism for an indoor elevator is provided, comprising: an elastic plate 1, the middle section of which is connected to the top of a car 2; a lifting assembly, comprising two reversing pulleys 3, a drum 4, and a cable 5 wound on the drum 4, respectively arranged at both ends of the elastic plate 1, the cable 5 extending upward after being reversing at the reversing pulley 3, and the cable 5 is applied with an upward force by the reversing pulley 3 to the end of the elastic plate 1, so that the elastic plate 1 is bent and deformed, and the two ends of the elastic plate 1 move upward; two locking members, respectively arranged at the two ends of the elastic plate 1, the locking members having a first state for stopping the movement of the car 2 and a second state for releasing the movement; wherein, when the end of the elastic plate 1 moves downward beyond a set threshold, the elastic plate 1 triggers the locking member to switch from the second state to the first state.

[0028] When the indoor elevator of the present invention is in use, the reversing pulley 3 is arranged at both ends of the elastic plate 1. When the entire indoor elevator is in normal use, the cable 5 applies an upward pulling force to both ends of the elastic plate 1, and the elastic plate 1 is bent and deformed, so that the two ends of the elastic plate 1 move upward. At this time, the locking member is in the second state, and the locking member does not have a locking effect on the car 2, and the car 2 can move freely. When the cable 5 is disconnected, the end of the elastic plate 1 at the disconnection loses the upward pulling force, thereby causing the end of the elastic plate 1 at that location to move downward. When the end of the elastic plate 1 moves downward beyond a set threshold, the elastic plate 1 triggers the locking member, so that the locking member switches to the first state, which can stop the car 2, thereby preventing the car 2 from falling, and realizing safety protection for the indoor elevator.

[0029] It is not difficult to see that at the moment the cable 5 is disconnected, the end of the elastic plate 1 that loses the tension can respond and move downward, which can quickly trigger the locking member, reducing the reaction time and further improving safety.

[0030] Furthermore, the present invention triggers the locking member through the elastic deformation ability of the elastic plate 1 itself. The elastic plate 1 has a simple and stable structure and is not prone to failure, thus ensuring the stability of the entire locking mechanism.

[0031] In a preferred embodiment, the structure of the locking member locking the car 2 can be as follows: Figure 1 and Figure 3 The locking mechanism is configured to include two locking rods 6 respectively arranged at both ends of the elastic plate 1, and the locking rods 6 extend vertically; the locking member includes a locking ring 7 sleeved on the locking rod 6, and when the locking member is in a first state, the inner wall of the locking ring 7 abuts against the locking rod 6; when the locking member is in a second state, the axis of the locking ring 7 is roughly coaxial with the axis of the locking rod 6, so that there is a gap between the inner wall of the locking ring 7 and the locking rod 6.

[0032] When the indoor elevator is in normal operation, the locking ring 7 is movably sleeved on the outer side of the locking rod 6. At this time, the car 2 can move up and down freely, and there is no abutment force between the inner wall of the locking ring 7 and the locking rod 6. When the cable 5 is disconnected, the end of the elastic plate 1 at the corresponding position triggers the locking piece at the corresponding position, so that the inner wall of the locking ring 7 and the locking rod 6 abut and rub against each other, thereby stopping the car 2.

[0033] By adopting the separately arranged locking rod 6 and locking ring 7, the locking rod 6 does not participate in other operations during the normal operation of the indoor elevator, thereby ensuring the structural stability of the locking rod 6, so that when the cable 5 is disconnected, the locking member can stably provide locking force.

[0034] It should be noted that the axis of the locking ring 7 is roughly coaxial with the axis of the locking rod 6, which means that the diameter of the ring hole of the locking ring 7 is larger than the outer diameter of the locking rod 6. When the locking ring 7 is coaxial with the locking rod 6, it can be ensured that there is a gap between the inner wall of the locking ring 7 and the locking rod 6, and the locking piece is in the second state. When the axis of the locking ring 7 is inclined at a certain angle or offset at a certain distance compared to the axis of the locking rod 6, at this time, the inner wall of the locking ring 7 has not yet abutted against the locking rod 6, and there is still a gap, and the locking piece is also in the second state.

[0035] In the above embodiments, a separately provided locking rod 6 is used, and locking is performed by friction between the inner wall of the locking ring 7 and the locking rod 6. In an alternative embodiment, the locking rod 6 may not be provided. Figure 1 As shown, existing indoor elevators are mostly equipped with guide rails. In a replaceable embodiment, the locking member can be set as a locking block with a gap with the guide rail. When the end of the elastic plate 1 moves downward and exceeds a set threshold, the locking block is pushed so that the locking block abuts against the guide rail, thereby locking the car 2.

[0036] exist Figure 1 In the illustrated embodiment, to be more specific, the locking ring 7 and the elastic plate 1 are split structures, and a portion of the locking ring 7 extends to the lower side of the elastic plate 1 and forms a limiting portion 8; the locking member also includes a connecting portion 9 connected to the car 2, a supporting ring 10 sleeved on the locking rod, and a spring 11; wherein the spring 11 and the elastic plate 1 abut against the upper and lower sides of the limiting portion 8, so that the locking ring 7 is roughly horizontally arranged on the top of the supporting ring 10, and the locking member is in the second state; when the end of the elastic plate 1 moves downward beyond a set threshold, the elastic plate 1 compresses the spring 11, and the locking ring 7 tilts until the inner wall of the locking ring 7 abuts and rubs against the locking rod 6, and the locking member is in the first state.

[0037] When the locking member is in the second state, Figure 4 As shown, the support ring 10 is supported on the lower side of the locking ring 7, and the spring 11 carries the limiting portion 8, so that the limiting portion 8 can maintain abutment with the elastic plate 1, thereby forming a spring 11 and the elastic plate 1 clamping the limiting portion 8, which can keep the locking ring 7 placed roughly horizontally on the support ring 10 to prevent the locking ring 7 from moving at will. When the end of the elastic plate 1 moves downward, the limiting portion 8 is pushed downward and the spring 11 is compressed. At this time, the locking ring 7 tilts, and when the elastic plate 1 moves downward beyond the set threshold, as shown in FIG. Figure 5 As shown, the locking ring 7 is tilted until its inner wall abuts and rubs against the locking rod 6. At this time, a vertical friction force is generated between the locking ring 7 and the locking rod 6, and the elastic plate 1 is pressed on the limiting portion 8. The limiting portion 8 provides an upward supporting force to the elastic plate 1, thereby stopping the car 2.

[0038] Among them, Figure 4 and Figure 5 As shown, the connecting portion 9 is a plate-like structure lower than the locking ring 7. When the elastic plate 1 presses down the limiting portion 8, the limiting portion 8 and the locking ring 7 rotate as a whole around the edge of the supporting ring 10 as the axis, so that the locking ring 7 is tilted.

[0039] It should be noted that, under the influence of the deadweight of the car 2, the elastic plate 1 has been deformed to a certain extent, so that the end of the elastic plate 1 has moved upward. When the subsequent user enters and exits the car 2, the elastic plate 1 continues to move upward at a smaller amplitude. At this time, the spring 11 caused by the upward movement of the elastic plate 1 pushes the limit portion 8 upward, causing the locking ring 7 to tilt, and the inner wall of the locking ring 7 has not yet reached the abutment against the locking rod 6.

[0040] A further optimization is that at least two abutment portions are provided between the elastic plate 1 and the limiting portion 8 and are spaced apart from each other along the extension direction of the elastic plate 1 , and the two abutment portions are provided between the spring 11 and the supporting ring 10 .

[0041] By setting an abutment portion between the elastic plate 1 and the limiting portion 8, the limiting portion 8 and the elastic plate 1 can be abutted at intervals. Compared with the method in which the elastic plate 1 directly abuts against the limiting portion 8, the shaking of the limiting portion 8 caused by the bending change of the elastic plate 1 can be reduced. The initial angle of the limiting portion 8 can also be adjusted by adjusting the height of each abutment portion.

[0042] like Figure 4 As shown, a protrusion 16 is provided on the top of one end of the limiting portion 8 close to the locking ring 7 to form an abutment portion, and a screw 17 is screwed on the elastic plate 1 to form another supporting portion. In this way, during normal use, there are two supporting points on the lower side of the limiting portion 8 and at least two supporting points on the upper side of the limiting portion 8, which can ensure the stability of the clamping and fixing of the limiting portion 8 and prevent the limiting portion 8 from rotating.

[0043] Of course, the abutting portion may also have other configurations, for example, using a screw 17 screwed together with the limiting portion 8 to facilitate adjustment of the height of the abutting portion.

[0044] A further optimization is that two limiting columns 12 are formed on the connecting portion 9 , and the two limiting columns 12 clamp the limiting portion 8 to limit the horizontal movement of the limiting portion 8 .

[0045] In the above embodiment, the elastic plate 1 triggers the locking ring 7 by tilting the locking ring 7 so that the locking ring 7 enters the first state. In an alternative embodiment, the elastic plate 1 can also be used to push the locking ring 7 in the horizontal direction, which is a way for the locking ring 7 to enter the first state. Specifically, the locking member includes a supporting plate that supports the locking ring 7, and the top of the locking ring 7 protrudes to form a thrust rib. When the locking member is in the second state, the end of the elastic plate 1 is located on the upper side of the thrust rib, and there is a gap between the inner wall of the locking ring 7 and the locking rod 6. While the end of the elastic plate 1 moves downward, the end of the elastic plate 1 moves outward in the horizontal direction, thereby pushing the thrust rib, so that the locking ring 7 moves horizontally, and the inner wall of the locking ring 7 abuts against the locking rod 6. At this time, the elastic plate 1 is placed on the locking ring 7, and the locking ring 7 provides an upward thrust to the elastic plate 1. When the elastic plate 1 bends again due to the thrust, the locking ring 7 tilts under the influence of the unilateral pressure of the elastic plate 1, and abuts and rubs against the locking rod 6.

[0046] A further optimization is that the locking ring 7 includes an outer ring body 701 having a mounting hole, and an inner ring body 702 disposed in the mounting hole, and the hardness of the inner ring body 702 is less than the hardness of the outer ring body 701. In this way, the inner ring body 702 with a smaller hardness abuts against the locking rod 6, so that the inner ring body 702 and the locking rod 6 can be deformed to a certain extent when they abut and rub against each other, thereby increasing the friction force.

[0047] A further optimization is that the cross section of the inner wall of the locking ring 7 is an outwardly convex arc, and a separation groove 13 is arranged around the middle section of the inner wall of the locking ring 7. By such an arrangement, when the locking ring 7 is tilted and the inner wall of the locking ring 7 abuts against the locking rod 6, the contact area between the inner wall of the locking ring 7 and the locking rod 6 can be increased.

[0048] A further optimization is that the support ring 10 is a nylon support ring 10 .

[0049] In a preferred embodiment, the locking mechanism further includes a fixed beam 14, the middle portion of which is rotatably connected to the car 2, the middle section of the elastic plate 1 is connected to the fixed beam 14, and the connecting portion 9 is connected to the fixed beam 14. By such a configuration, when the lengths of the cables 5 on both sides of the drum 4 are different, the height of the reversing pulley 3 can be adjusted by slightly rotating the fixed beam 14 itself, thereby ensuring the horizontality of the car 2.

[0050] exist Figure 2 In the illustrated embodiment, the connecting portion 9 is connected to the fixing beam 14 . Since the rotation angle of the fixing beam 14 is relatively small, the stability of the supporting ring 10 supporting the locking ring 7 is relatively small.

[0051] In a preferred embodiment, the locking mechanism further includes a limiting hook 15, which is disposed on the side of the reversing pulley 3 facing the center of the elastic plate 1, and the limiting hook 15 abuts against the upper surface of the elastic plate 1 to limit the upward movement of the elastic plate 1 at the abutment position with the limiting hook 15. Through such an arrangement, during normal use, the limiting effect of the limiting hook 15 can reduce the distance of the upward movement of the end of the elastic plate 1, thereby improving the stability of the locking member in the second state.

[0052] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0053] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A safety protection locking mechanism for an indoor elevator, characterized in that: include: An elastic plate, a middle section of which is connected to the top of the car; A lifting assembly, comprising two reversing pulleys respectively arranged at both ends of the elastic plate, a reel, and a cable wound on the reel, the cable extending upward after being reversing at the reversing pulley, and the cable exerting an upward force from the reversing pulley to the end of the elastic plate, so that the elastic plate is bent and deformed, and the two ends of the elastic plate move upward; Two locking members are respectively arranged at two ends of the elastic plate, and the locking members have a first state for stopping the movement of the car and a second state for releasing the movement; When the end of the elastic plate moves downward beyond a set threshold, the elastic plate triggers the locking member to switch from the second state to the first state; The locking mechanism further comprises two locking rods respectively arranged at two ends of the elastic plate, and the locking rods extend vertically; The locking member includes a locking ring sleeved on the locking rod, and when the locking member is in a first state, the inner wall of the locking ring abuts against the locking rod; when the locking member is in a second state, the axis of the locking ring is roughly coaxial with the axis of the locking rod, so that there is a gap between the inner wall of the locking ring and the locking rod; the locking mechanism also includes a limiting hook, which is arranged on the side of the reversing pulley toward the center of the elastic plate, and the limiting hook abuts against the upper surface of the elastic plate to limit the upward movement of the elastic plate at the abutting position with the limiting hook.

2. A safety protection locking mechanism for an indoor elevator according to claim 1, characterized in that: The locking ring and the elastic plate are separate structures, and a portion of the locking ring extends to the lower side of the elastic plate to form a limiting portion; The locking member also includes a connecting portion connected to the car, a supporting ring sleeved on the locking rod, and a spring; Among them, the spring and the elastic plate abut against the upper and lower sides of the limiting portion, so that the locking ring is arranged approximately horizontally on the top of the supporting ring, and the locking piece is in the second state; when the end of the elastic plate moves downward beyond a set threshold, the elastic plate compresses the spring, and the locking ring tilts until the inner wall of the locking ring abuts and rubs against the locking rod, and the locking piece is in the first state.

3. A safety protection locking mechanism for an indoor elevator according to claim 2, characterized in that: At least two abutment portions are provided between the elastic plate and the limiting portion and are spaced apart from each other along the extending direction of the elastic plate. The two abutment portions are provided between the spring and the supporting ring.

4. A safety protection locking mechanism for an indoor elevator according to claim 2, characterized in that: Two limiting columns are formed on the connecting portion, and the two limiting columns clamp the limiting portion to limit the horizontal movement of the limiting portion.

5. The safety protection locking mechanism for indoor elevators according to claim 1, characterized in that: The locking ring comprises an outer ring body having a mounting hole and an inner ring body arranged in the mounting hole, wherein the hardness of the inner ring body is smaller than the hardness of the outer ring body.

6. A safety protection locking mechanism for an indoor elevator according to claim 2 or 5, characterized in that: The cross section of the inner wall of the locking ring is in an outwardly convex arc shape, and a separation groove is arranged around the middle section of the inner wall of the locking ring.

7. A safety protection locking mechanism for an indoor elevator according to claim 2, characterized in that: The supporting ring is a nylon supporting ring.

8. The safety protection locking mechanism for indoor elevators according to claim 2, characterized in that: The locking mechanism further comprises a fixed beam, a middle portion of which is rotatably connected to the car, a middle section of the elastic plate is connected to the fixed beam, and the connecting portion is connected to the fixed beam.

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