A self-lifting barrier-free threshold

Abstract

The utility model relates to a self-lifting barrier-free threshold belongs to barrier-free passageway technical field. Including, threshold fixed section one, threshold lifting section, threshold drop pit, spring one, spring mounting hole one, spring two, spring mounting hole two and threshold fixed section two. The "mortise and tenon" structure of threshold fixed section and threshold lifting section, the ground in threshold drop pit below with threshold lifting section is connected with spring. When the wheelchair passes through the threshold, the front and rear wheels once contact threshold lifting section, and extrusion pressure is added to it, and then spring is compressed, so that threshold lifting section drops in threshold drop pit, makes the wheelchair can pass through smoothly, when the wheelchair passes, the threshold is in the no pressure state after, spring restores natural state, threshold lifting section recovers to the initial state of being flush with threshold fixed section. The advantage lies in, both keep the conventional function of threshold, also realize its make the wheelchair can quickly, smoothly pass through the barrier-free function. And, simple structure, reliable operation, convenient maintenance.

Description

Technical Field

[0001] This invention belongs to the field of barrier-free access technology, and in particular provides a self-lifting barrier-free threshold that can ensure wheelchair users can pass through smoothly and quickly on their own. Background Technology

[0002] Currently, many older residential buildings have installed elevators for convenient access, but lack accessible pathways for wheelchairs. The most direct obstacle to wheelchair mobility is the various waterproof and insect-proof door thresholds or unit thresholds. Since these thresholds are generally 2-6cm high, ordinary wheelchairs can barely pass over obstacles ≤2cm high, but still experience a bumpy ride; ≤3-5cm presents a significant obstacle for most wheelchair users, requiring assistance to lift the vehicle or use a ramp; and >5cm is almost impossible to pass independently, constituting a serious obstacle. Furthermore, unit thresholds in older residential areas are generally above this height, making passage impossible without assistance. This invention designs a wheelchair-accessible threshold, enabling wheelchair users to travel safely and smoothly independently, contributing to the age-friendly and barrier-free transformation of older residential areas, and enhancing the urban environment. Summary of the Invention

[0003] The purpose of this invention is to provide a self-lifting barrier-free threshold, solving the problem that the height of entrance thresholds or unit thresholds affects the smooth passage of wheelchairs. It eliminates the threshold height difference, achieving smooth passage and balancing the dual requirements of "barrier-free passage" and "threshold sealing and protection." Ultimately, it enables wheelchair users to go out and return home independently and smoothly, improving their quality of life.

[0004] This invention includes a threshold fixing section 3, a threshold lifting section 4, a threshold lowering pit 5, a spring 6, a spring mounting hole 7, a spring 8, a spring mounting hole 9, and a threshold fixing section 2 10. The threshold lifting section 4, threshold fixing section 3, and threshold fixing section 2 10 each form a mortise and tenon structure. The threshold lifting section 4 is a mortise structure, while threshold fixing section 3 and threshold fixing section 2 10 are mortise structures. The tenon in the mortise structure of the threshold lifting section 4 has a length of 3 cm-4 cm, a width of 2 cm-3 cm, and a height consistent with that of threshold fixing section 3 and threshold fixing section 2 10. The mortise in the mortise structure of threshold fixing section 3 and threshold fixing section 2 10 has a length and width consistent with the tenon, and a height that extends downward by 4 cm-6 cm to ensure that the threshold lifting section 4 cannot move forward or backward during the up-and-down movement. At the same time, a gap of 1 mm-2 mm must be maintained in the middle of the mortise and tenon structure.

[0005] The threshold lifting section 4, spring 6, and spring 8 are distributed on the same vertical plane; the bottom of spring 6 is installed in spring mounting hole 7, and the bottom of spring 8 is installed in spring mounting hole 9; the tops of spring 6 and spring 8 are vertically fixed to the bottom of the threshold lifting section 4; the length of spring 6 and spring 8 is selected so that, without the action of external force, the threshold lifting section 4 is just level with the height of threshold fixing section 3 and threshold fixing section 10.

[0006] The self-lifting barrier-free threshold of the present invention is provided with a door frame 1 above it, and an entrance door 2 is provided inside the door frame 1.

[0007] The innovation of this invention lies in the "mortise and tenon" structure formed by the fixed sill section and the lifting sill section, with the lower part of the lifting sill section connected to the ground inside the sill descent pit by a spring. When a wheelchair passes over the sill, its front and rear wheels apply pressure to the lifting sill section upon contact, compressing the spring and causing the lifting sill section to descend into the sill descent pit, allowing the wheelchair to pass smoothly. After the wheelchair has passed, the sill is in a pressure-free state, the spring returns to its natural state, and the lifting sill section returns to its initial state of being flush with the fixed sill section.

[0008] The advantage of this invention is that it maintains the conventional function of a threshold while also achieving its barrier-free function, allowing wheelchairs to pass quickly and smoothly. This self-lifting barrier-free threshold is characterized by its simple structure, reliable operation, and convenient maintenance. Attached Figure Description

[0009] Figure 1 This is an elevation view of a self-lifting accessible threshold, showing the threshold's state and structure when no wheelchair is available.

[0010] Figure 2 This is a detailed diagram of wheelchair access, illustrating how it works when wheelchair users cross a threshold.

[0011] Figure 3 This diagram illustrates the descent of the sill lifting section, showing in detail the relationship between the sill lifting section and the sill lowering pit during operation.

[0012] Figure 4 This is a plan view of the mortise and tenon structure of the door sill lifting section, which shows the structural relationship between the door sill lifting section and the door sill fixing section when the door sill is stationary.

[0013] In the diagram, 1 is the door frame, 2 is the entrance door, 3 is the threshold fixing section 1, 4 is the threshold lifting section, 5 is the threshold lowering pit, 6 is the spring 1, 7 is the spring mounting hole 1, 8 is the spring mounting hole 2, 9 is the threshold fixing section 2, 10 is the wheelchair, 11 is the wheelchair user, and 12 is the wheelchair user. Detailed Implementation Example

[0014] A specific embodiment of the present invention will now be described with reference to the accompanying drawings.

[0015] like Figure 1 As shown: A self-lifting barrier-free threshold includes a threshold fixing section 3, a threshold lifting section 4, a threshold lowering pit 5, a spring 6, a spring mounting hole 7, a spring 8, a spring mounting hole 9, and a threshold fixing section 10. Figure 4 As shown, when a self-lifting barrier-free threshold is in a stationary state, the threshold lifting section 4 and the threshold fixing section 3 are tightly fitted together due to the "mortise and tenon" structure. Figure 2 As shown: When wheelchair user 12 rides wheelchair 11 through a self-lifting accessible threshold, once the front or rear wheels contact the threshold lifting section 4, under its squeezing action, the threshold lifting section 4 gradually moves down and compresses springs 6 and 8, eventually moving down into the threshold lowering pit 5. Figure 3 As shown, because the mortise of the threshold fixing section 3 extends downward by a small segment, the threshold lifting section 4 will not deviate or get stuck when it moves downward to near its limit position. As the front or rear wheels of the wheelchair 11 completely pass over the threshold, the self-lifting barrier-free threshold loses external pressure and gradually rises along the mortise structure under the restoring force of springs 16 and 28 to a height level with the upper ends of threshold fixing section 3 and threshold fixing section 2 10, returning to its original height. Figure 1 This design solves the problem of wheelchair accessibility caused by high thresholds.

[0016] If some conventional changes are made to the present invention to form a variation, such as changing the size, shape and number of the threshold lifting section and the threshold fixing section, or adding bottom drainage holes, the variation shall be regarded as the present invention.

Claims

1. A self-lifting barrier-free threshold, characterized in that, It includes a threshold fixing section 1 (3), a threshold lifting section (4), a threshold lowering pit (5), a spring 1 (6), a spring mounting hole 1 (7), a spring 2 (8), a spring mounting hole 2 (9), and a threshold fixing section 2 (10); the threshold lifting section (4) forms a "mortise and tenon" structure with the threshold fixing section 1 (3) and the threshold fixing section 2 (10), the threshold lifting section (4) is a "tenon" structure, and the threshold fixing section 1 (3) and the threshold fixing section 2 (10) are "mortise" structures; the tenon in the "tenon" structure at the threshold lifting section (4) is 3 cm - 4 cm long, 2 cm - 3 cm wide, and the height is consistent with the height of the threshold fixing section 1 (3) and the threshold fixing section 2 (10); the mortise in the "mortise" structure at the threshold fixing section 1 (3) and the threshold fixing section 2 (10) is consistent with the length and width of the tenon, and the height is extended downward by 4 cm - 6 cm to ensure that the threshold lifting section (4) cannot move forward or backward during the up and down movement. At the same time, a gap of 1 mm - 2 mm needs to be left in the middle of the "mortise and tenon" structure; The threshold lifting section (4) is distributed on the same vertical plane as spring one (6) and spring two (8); the bottom of spring one (6) is installed in spring mounting hole one (7), and the bottom of spring two (8) is installed in spring mounting hole two (9); the tops of spring one (6) and spring two (8) are vertically fixed on the bottom of the threshold lifting section (4); the length of spring one (6) and spring two (8) is selected according to the standard that, without the action of external force, the threshold lifting section (4) is just level with the height of threshold fixing section one (3) and threshold fixing section two (10).

2. The self-lifting barrier-free threshold according to claim 1, characterized in that, The self-lifting barrier-free threshold is provided with a door frame (1) above it, and an entrance door (2) is provided inside the door frame (1).

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