Quickly deployable wheelchair securement

Abstract

The utility model relates to wheelchair fixer technical field, concretely is a kind of wheelchair fixer of quick installation, including base, guide rail, stopper, hook and splicing device, guide rail is arranged on the upper surface of base, stopper is located on the upper surface of guide rail sliding connection, hook is arranged in one end of stopper, splicing device is arranged on the surface of base, splicing device includes clamping plate, clamping plate is fixedly connected with base, the surface of clamping plate is equipped with sliding slot, the inner wall of clamping plate sliding slot is slidably connected with sliding block, one end of guide rail is fixedly connected with inclined block, the side of inclined block is equipped with bevel, the surface of inclined block is equipped with slot, the surface of sliding block is fixedly connected with inserting rod, the utility model, the slope of inclined block and sliding block cooperation and the elastic force effect of pressure spring, realize the quick insertion of guide rail and clamping plate and fixed, need not additional tool or complex operation, press down can trigger automatic locking, inserting rod synchronous insertion ensures connection firm, significantly improve installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair restraint technology, and in particular to a wheelchair restraint that can be quickly installed. Background Technology

[0002] Wheelchair restraints are essential equipment for ensuring the safety of wheelchair users. They are commonly found in public transportation such as subways and light rail trains, and some vehicles are also equipped with them. They generally consist of a fixed seat, a movable seat, a housing, telescopic components, limiting components, and connecting components. To use them, first push the wheelchair next to the restraint and align it. Then, remove the seat belt hook and pull out the seat belt at a steady speed, passing it around key parts of the wheelchair frame such as the armrests and backrest crossbars. After adjusting the length, fasten the buckle. Some restraints also have clips and hooks for further reinforcement. Through these operations, the wheelchair can be effectively prevented from shifting or tipping over during travel due to swaying, acceleration, braking, etc., creating a safe and stable travel experience for wheelchair users.

[0003] However, wheelchair restraints are cumbersome to operate, requiring multiple presses, rotations, or insertions and removals of components to lock them in place. Magnetic or slot guidance has low accuracy, leading to misalignment and extended installation time. Some restraints are also bulky, making handling and unfolding time-consuming and laborious, severely hindering the need for rapid installation. Utility Model Content

[0004] The purpose of this utility model is to solve the problems of existing wheelchair restraints, such as cumbersome operation steps, requiring multiple pressing, rotation or insertion / removal of components to complete locking, low magnetic or slot guidance accuracy, easy alignment deviation, prolonged installation time, bulky size of some restraints, and time-consuming and laborious handling and unfolding process, which seriously restrict the need for rapid installation. Therefore, this utility model proposes a wheelchair restraint that can be quickly installed.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a quick-release wheelchair fixation device, comprising a base, a guide rail, a limiter, a hook, and a splicing device. The guide rail is disposed on the upper surface of the base, the limiter is slidably connected to the upper surface of the guide rail, the hook is disposed at one end of the limiter, and the splicing device is disposed on the surface of the base. The splicing device includes a clamping plate, which is fixedly connected to the base. A groove is formed on the surface of the clamping plate, and a slider is slidably connected to the inner wall of the groove. One end of the guide rail is fixedly... A wedge block is fixedly connected to the slider. One side of the wedge block has an angled opening, and the surface of the wedge block has a slot. A rod is fixedly connected to the surface of the slider. The rod is inserted into the slot at one end of the wedge block. The longitudinal section of the slider is L-shaped. The wedge block and the slider are in contact. By setting up a splicing device, the wedge blocks and slider are matched by their angled surfaces, and the elastic force of the pressure spring is used to achieve quick insertion and fixation of the guide rail and the clamping plate. No additional tools or complicated operations are required. Pressing down will trigger automatic locking. The rod is inserted synchronously to ensure a stable connection, significantly improving installation efficiency.

[0006] Preferably, one end of the clamp is fixedly connected to a cylinder, and there are four sliders arranged symmetrically. By setting the sliders, when the guide rail is pressed down, the inclined surface of the inclined block at the bottom of the guide rail contacts the slider, forcing the slider to overcome the resistance of the pressure spring and move backward. During this process, the spring is compressed and stores elastic potential energy. When the inclined block completely passes through the slider, the spring releases its elastic force to push the slider forward to reset, so that the front end of the slider is tightly abutted against the limiting surface of the inclined block, forming a mechanical self-locking structure to prevent the guide rail from loosening upward.

[0007] Preferably, a pressure spring is fixedly connected to the inner wall of the cylinder. The end of the pressure spring away from the cylinder is fixedly connected to the slider. By setting the pressure spring, when the guide rail is pressed down, the inclined surface of the inclined block pushes the slider backward to compress the pressure spring. At this time, the spring accumulates elastic potential energy. When the inclined block passes through the slider, the pressure spring releases its potential energy to push the slider forward to press against the plane of the inclined block, forming a rigid locking structure. At the same time, the insertion rod is accurately inserted into the positioning hole of the inclined block under the action of the spring force.

[0008] Preferably, the surface of the guide rail is provided with an adjustment component, which includes a locking plate fixedly connected to the guide rail. One end of the limiter is fixedly connected to a bracket, and a round rod is rotatably connected to the surface of the bracket. A stop bar is fixedly connected to the surface of the round rod. By setting the adjustment component, the rotation of the round rod drives the stop bar to disengage from the locking plate, allowing the limiter to slide freely along the guide rail to adjust its position. After the round rod is released, a torsion spring pushes the stop bar to engage and lock with the locking plate, achieving tool-free quick positioning. This not only flexibly adapts to different wheelchair fixing needs but also ensures that the limiter does not slip during use through mechanical locking, balancing adjustment convenience and locking reliability.

[0009] Preferably, there are multiple clamping plates arranged in a linear array along the guide rail. By setting the clamping plates, when the rotating rod causes the stop bar to disengage from the clamping plate, the limiter can slide freely along the guide rail to adjust its position. When the limiter reaches the target position and releases the rod, the torsion spring drives the stop bar to reset and engage in the slot of the clamping plate. The rotation of the stop bar is restricted by mechanical engagement, thereby fixing the limiter at the designated position on the guide rail.

[0010] Preferably, the stop bar is engaged with the card plate, and the longitudinal section of the card plate is L-shaped.

[0011] Preferably, a torsion spring is fitted on the surface of the round rod, and the two ends of the torsion spring are fixedly connected to the round rod and the bracket, respectively. By setting the torsion spring, when the round rod is rotated to disengage the stop bar from the clamping plate, the torsion spring is forcibly twisted by external force and stores elastic potential energy. At this time, the limiter can slide freely along the guide rail for adjustment. When the limiter reaches the target position and releases the round rod, the torsion spring instantly releases the stored potential energy, generates torque to push the round rod to drive the stop bar to quickly reset, so that the stop bar is accurately locked into the groove of the clamping plate, forming a mechanical lock.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, by setting up a splicing device, when installing the fixer, the guide rail is placed between two clamping plates, and then the guide rail is pressed down. The inclined block abuts against the slider, and the slider moves backward under force and squeezes the pressure spring. The pressure spring is under force, and when the inclined block passes through the slider, the pressure spring loses its restraint and generates elastic force to squeeze the slider against the inclined block. At the same time, the insertion rod is inserted into the inclined block to complete the fixation. By setting up the splicing device, the inclined surface cooperation between the inclined block and the slider and the elastic force of the pressure spring realize the quick insertion and fixation of the guide rail and the clamping plate without additional tools or complicated operations. Pressing down can trigger automatic locking, and the insertion rod is inserted synchronously to ensure a stable connection, significantly improving installation efficiency.

[0013] In this invention, by setting an adjustment component, during use, rotating the round rod causes the stop bar to disengage from the locking plate, allowing the limiter to be freely pushed along the guide rail. When the limiter reaches the appropriate position, releasing the round rod causes the torsion spring to release its restraint and generate elastic force to press the stop bar against the locking plate, thus completing the fixation. By setting an adjustment component, rotating the round rod drives the stop bar to disengage from the locking plate, allowing the limiter to slide freely along the guide rail to adjust its position. After releasing the round rod, the torsion spring pushes the stop bar to engage and lock with the locking plate, achieving tool-free quick positioning. This not only flexibly adapts to different wheelchair fixing needs but also ensures that the limiter does not slip during use through mechanical locking, balancing adjustment convenience and locking reliability. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a wheelchair fixation device for quick placement is provided for this utility model; Figure 2 A side view of the structure of a wheelchair fixation device for quick placement is provided for this utility model; Figure 3 A schematic diagram of the splicing device structure for a quick-installation wheelchair fixation device is provided for this utility model; Figure 4 A schematic diagram of the adjustment component structure of a wheelchair fixation device for quick placement is provided for this utility model; Figure 5 This utility model proposes a quick-installation wheelchair restraint. Figure 4 A magnified structural diagram at point A.

[0015] Legend: 1. Base; 2. Guide rail; 3. Limiter; 4. Hook; 5. Splicing device; 51. Clamping plate; 52. Slider; 53. Insert rod; 54. Inclined block; 55. Cylinder; 56. Pressure spring; 57. Adjustment component; 571. Stop bar; 572. Clamping plate; 573. Bracket; 574. Round rod; 575. Torsion spring. Detailed Implementation

[0016] Please see Figures 1-5 This utility model provides a technical solution: a wheelchair fixation device for quick placement, including a base 1, a guide rail 2, a limiter 3, a hook 4 and a splicing device 5. The guide rail 2 is disposed on the upper surface of the base 1, the limiter 3 is slidably connected to the upper surface of the guide rail 2, the hook 4 is disposed at one end of the limiter 3, and the splicing device 5 is disposed on the surface of the base 1.

[0017] In this implementation scheme: the splicing device 5 includes a clamping plate 51, which is fixedly connected to the base 1. The surface of the clamping plate 51 is provided with a sliding groove, and a slider 52 is slidably connected to the inner wall of the sliding groove of the clamping plate 51. One end of the guide rail 2 is fixedly connected to an inclined block 54, which has an angled edge on one side and a slot on its surface. The surface of the slider 52 is fixedly connected to an insertion rod 53, which is inserted into the slot at one end of the inclined block 54. The longitudinal section of the slider 52 is "L" shaped. The inclined block 54 contacts the slider 52. By setting up the splicing device 5, the inclined surfaces of the inclined block 54 and the slider 52 cooperate, and the elastic force of the pressure spring 56 is used to achieve quick insertion and fixation of the guide rail 2 and the clamping plate 51. No additional tools or complicated operations are required. Pressing down will trigger automatic locking, and the insertion rod 53 will be inserted simultaneously to ensure a stable connection, significantly improving installation efficiency.

[0018] Specifically, a cylinder 55 is fixedly connected to one end of the clamping plate 51, and there are four sliders 52 arranged symmetrically. By setting the sliders 52, when the guide rail 2 is pressed down, the inclined surface of the inclined block 54 at the bottom of the guide rail 2 contacts the slider 52, forcing the slider 52 to overcome the resistance of the pressure spring 56 and move backward. During this process, the spring is compressed and stores elastic potential energy. When the inclined block 54 completely passes through the slider 52, the spring releases its elastic force to push the slider 52 forward to reset, so that the front end of the slider 52 is tightly abutted against the limiting surface of the inclined block 54, forming a mechanical self-locking structure to prevent the guide rail 2 from loosening upward.

[0019] Specifically, a pressure spring 56 is fixedly connected to the inner wall of the cylinder 55. The end of the pressure spring 56 away from the cylinder 55 is fixedly connected to the slider 52. By setting the pressure spring 56, when the guide rail 2 is pressed down, the inclined surface of the inclined block 54 pushes the slider 52 backward to compress the pressure spring 56. At this time, the spring accumulates elastic potential energy. When the inclined block 54 passes through the slider 52, the pressure spring 56 releases potential energy to push the slider 52 forward to press tightly against the plane of the inclined block 54, forming a rigid locking structure. At the same time, the insertion rod 53 is accurately inserted into the positioning hole of the inclined block 54 under the action of the spring force.

[0020] Specifically, the surface of the guide rail 2 is provided with an adjustment component 57, which includes a locking plate 572. The locking plate 572 is fixedly connected to the guide rail 2. One end of the limiter 3 is fixedly connected to a bracket 573. A round rod 574 is rotatably connected to the surface of the bracket 573. A stop bar 571 is fixedly connected to the surface of the round rod 574. By setting the adjustment component 57, the round rod 574 rotates to drive the stop bar 571 to disengage from the locking plate 572. The limiter 3 can slide freely along the guide rail 2 to adjust its position. After the round rod 574 is released, the torsion spring 575 pushes the stop bar 571 to engage and lock with the locking plate 572, realizing tool-free quick positioning. It can flexibly adapt to different wheelchair fixing needs, and the mechanical locking ensures that the limiter 3 does not slide during use, taking into account both adjustment convenience and locking reliability.

[0021] Specifically, there are multiple card plates 572, which are arranged in a linear array along the guide rail 2.

[0022] In this embodiment: by setting the locking plate 572, when the rotating rod 574 causes the stop rod 571 to disengage from the locking plate 572, the limiter 3 can slide freely along the guide rail 2 to adjust its position. When the limiter 3 reaches the target position and releases the rod 574, the torsion spring 575 drives the stop rod 571 to reset and engage in the slot of the locking plate 572. The rotation of the stop rod 571 is restricted by mechanical engagement, thereby fixing the limiter 3 at the designated position on the guide rail 2.

[0023] Specifically, the stop lever 571 is engaged with the card plate 572, and the longitudinal section of the card plate 572 is set in an "L" shape.

[0024] Specifically, a torsion spring 575 is fitted onto the surface of the round rod 574, and the two ends of the torsion spring 575 are fixedly connected to the round rod 574 and the bracket 573, respectively.

[0025] In this embodiment: by setting a torsion spring 575, when the rotating rod 574 causes the stop rod 571 to disengage from the clamping plate 572, the torsion spring 575 is forcibly twisted by external force and stores elastic potential energy. At this time, the limiter 3 can slide freely along the guide rail 2 for adjustment. When the limiter 3 reaches the target position and releases the rod 574, the torsion spring 575 instantly releases the stored potential energy, generating torque to push the rod 574 to drive the stop rod 571 to quickly reset, so that the stop rod 571 is accurately inserted into the slot of the clamping plate 572, forming a mechanical lock.

[0026] Working principle: By setting up the splicing device 5, when installing the fixture, the guide rail 2 is placed between the two clamping plates 51. Then, the guide rail 2 is pressed down, the inclined block 54 abuts against the slider 52, the slider 52 moves backward under force and squeezes the pressure spring 56. The pressure spring 56 is under force. When the inclined block 54 passes through the slider 52, the pressure spring 56 loses its restraint and generates elastic force to squeeze the slider 52 against the inclined block 54. At the same time, the insertion rod 53 is inserted into the inclined block 54 to complete the fixation. By setting up the splicing device 5, the inclined surface cooperation between the inclined block 54 and the slider 52 and the elastic force of the pressure spring 56, the guide rail 2 and the clamping plate 51 can be quickly inserted and fixed without additional tools or complicated operations. Pressing down can trigger automatic locking. The insertion rod 53 is inserted at the same time to ensure a stable connection, which significantly improves the installation efficiency. By setting the adjustment component 57, during use, rotating the round rod 574 causes the stop rod 571 to disengage from the clamping plate 572. Then, the limiter 3 can be freely pushed along the guide rail 2. When the limiter 3 reaches the appropriate position, the round rod 574 is released, and the torsion spring 575 loses its restraint and generates elastic force to press the stop rod 571 against the clamping plate 572 to complete the fixation. By setting the adjustment component 57, the rotation of the round rod 574 drives the stop rod 571 to disengage from the clamping plate 572, and the limiter 3 can slide freely along the guide rail 2 to adjust its position. After releasing the round rod 574, the torsion spring 575 pushes the stop rod 571 to engage and lock with the clamping plate 572, realizing tool-free quick positioning. It can flexibly adapt to different wheelchair fixing needs, and the mechanical locking ensures that the limiter 3 does not slip during use, taking into account both the convenience of adjustment and the reliability of locking.

Claims

1. A quick-release wheelchair restraint, comprising a base (1), a guide rail (2), a limiter (3), a hook (4), and a splicing device (5), characterized in that: The guide rail (2) is set on the upper surface of the base (1), the limiter (3) is slidably connected to the upper surface of the guide rail (2), the hook (4) is set at one end of the limiter (3), and the splicing device (5) is set on the surface of the base (1). The splicing device (5) includes a clamping plate (51), which is fixedly connected to the base (1). The surface of the clamping plate (51) is provided with a sliding groove. A slider (52) is slidably connected to the inner wall of the sliding groove of the clamping plate (51). One end of the guide rail (2) is fixedly connected to an inclined block (54). One side of the inclined block (54) is provided with an angle. The surface of the inclined block (54) is provided with a slot. The surface of the slider (52) is fixedly connected to a plug rod (53). The plug rod (53) is inserted into the slot at one end of the inclined block (54). The longitudinal section of the slider (52) is set in an "L" shape. The inclined block (54) contacts the slider (52).

2. The wheelchair restraint device for quick placement according to claim 1, characterized in that: One end of the clamp (51) is fixedly connected to a cylinder (55), and there are four sliders (52), which are arranged symmetrically.

3. The wheelchair restraint device for quick placement according to claim 2, characterized in that: A pressure spring (56) is fixedly connected to the inner wall of the cylinder (55), and the end of the pressure spring (56) away from the cylinder (55) is fixedly connected to the slider (52).

4. The wheelchair restraint device for quick placement according to claim 1, characterized in that: The surface of the guide rail (2) is provided with an adjustment component (57), the adjustment component (57) includes a clamping plate (572), the clamping plate (572) is fixedly connected to the guide rail (2), one end of the limiter (3) is fixedly connected to a bracket (573), the surface of the bracket (573) is rotatably connected to a round rod (574), and the surface of the round rod (574) is fixedly connected to a stop bar (571).

5. The wheelchair restraint device for quick placement according to claim 4, characterized in that: There are multiple card plates (572), and the multiple card plates (572) are arranged in a linear array along the guide rail (2).

6. The wheelchair restraint device for quick placement according to claim 5, characterized in that: The stop bar (571) is engaged with the card plate (572), and the longitudinal section of the card plate (572) is set in an "L" shape.

7. A quick-release wheelchair restraint as described in claim 6, characterized in that: A torsion spring (575) is fitted on the surface of the round rod (574), and the two ends of the torsion spring (575) are fixedly connected to the round rod (574) and the bracket (573) respectively.

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