Safety fixator capable of preventing bed from falling
By designing a safety anchor for preventing bed falls, a U-shaped fixing clip and a limiting component are used to fix the guardrail on the bed frame. When the guardrail is not locked, a buzzer alarm is triggered, which solves the problems of poor stability and false alarms of existing guardrails and achieves effective early warning and support for preventing bed falls.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG PROVINCIAL PEOPLES HOSPITAL
- Filing Date
- 2025-03-31
- Publication Date
- 2026-05-05
AI Technical Summary
Existing bed rail alarm devices are limited in function, cannot effectively support the railings, have poor stability, are prone to false alarms, and cannot effectively prevent patients from falling out of bed or climbing over the railings.
A bed safety anchor for preventing falls has been designed, including a U-shaped fixing clip, a U-shaped fork, a connecting arm, a limiting component, and a micro switch. It is fixed to the bed frame with screws, and the limiting component and anti-slip pad enhance stability. When the guardrail is not locked, a buzzer alarm is triggered to alert medical staff.
A novel, reliable, and easily adjustable anti-fall bed device has been developed, which can provide timely warnings and prevent patients from getting out of bed or climbing over the guardrails, thus improving the stability of the guardrails and the accuracy of the alarm.
Smart Images

Figure CN224193692U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of medical device technology, and in particular relates to a safety fixation device for preventing bed falls. Background Technology
[0002] Falls and bed falls are among the most common safety issues in medical institutions, often caused by patients lowering or climbing over the bed rails and getting out of bed without authorization. This is especially true for elderly patients with cognitive impairment, delirium, and those who are not fully recovered from post-operative anesthesia. To prevent such incidents, alarms are usually installed on the bed frame. When the rails are lowered, the alarm sounds to alert medical staff. However, the alarm only serves to sound an alarm and has a limited function; it cannot provide support for the rails. When the rails are not fully locked, they are not fully extended, have poor stability, and are prone to false alarms.
[0003] Existing patent document (publication number: CN210955427U) discloses a "fall prevention bed rail alarm device", which also has the above-mentioned technical problems. Summary of the Invention
[0004] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a bed fall prevention safety fixation device with novel structure, reliable support, convenient adjustment, easy use, and intelligent early warning, so that medical staff can promptly prevent patients from getting out of bed or climbing over the guardrail and falling out of bed.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A bed safety anchor for preventing falls, characterized in that it comprises:
[0007] U-shaped fixing clips are used to install on the crossbeams of the bed frame;
[0008] U-shaped forks are used to support the guardrails of the bed frame;
[0009] Connecting arm, the connecting arm rotatably connects the U-shaped fixing clamp and the U-shaped fork head;
[0010] The first limiting member is used to limit the relative rotation between the connecting arm and the U-shaped fixing clamp;
[0011] The second limiting member is used to restrict the relative rotation between the connecting arm and the U-shaped fork head;
[0012] A micro switch, a controller, and a buzzer are respectively installed on the connecting arm, and the controller is electrically connected to the micro switch and the buzzer.
[0013] When the U-shaped fork rotates to touch the microswitch, the microswitch sends a signal to the controller, which then activates the buzzer alarm to sound. This safety restraint features a novel structure, reliable support, convenient adjustment, ease of use, and intelligent early warning system, allowing medical staff to promptly prevent patients from getting out of bed or climbing over the railing and falling out of bed.
[0014] Furthermore, a first Torx screw is connected to the side of the U-shaped fixing clip. The first Torx screw abuts against the bed frame to restrict the U-shaped fixing clip from sliding freely relative to the bed frame. Rotating the first Torx screw causes its end to make tight contact with the side of the crossbeam, creating significant friction, which further restricts the free sliding of the U-shaped fixing clip and ensures reliable fixation.
[0015] Furthermore, a second Torx screw is connected to the top surface of the U-shaped fixing clip. This second Torx screw abuts against the bed frame to restrict the U-shaped fixing clip from sliding freely relative to the bed frame. Rotating the second Torx screw causes its end to make tight contact with the top surface of the crossbeam, creating significant friction and further restricting the U-shaped fixing clip from sliding freely. This ensures reliable fixing and allows the U-shaped fixing clip to adapt to bed frame crossbeams of varying thicknesses, demonstrating strong adaptability.
[0016] Furthermore, the first limiting component includes a first end cap and a first polygonal post. The first end cap is disposed on the first polygonal post, and the cross-sectional diameter of the first end cap is larger than the cross-sectional diameter of the first polygonal post. The U-shaped fixing clamp is provided with a limiting base, and the limiting base is provided with a first limiting hole corresponding to the first polygonal post. The connecting arm is provided with a first positioning hole corresponding to the first polygonal post. When the first polygonal post is passed through the first limiting hole and then into the first positioning hole, there will be no relative rotation between the U-shaped fixing clamp and the connecting arm, ensuring reliable limiting, simple operation, and a simple and economical structure for the first limiting component.
[0017] Furthermore, the second limiting component includes a second end cap and a second polygonal post. The second end cap is disposed on the second polygonal post, and the cross-sectional diameter of the second end cap is larger than the cross-sectional diameter of the second polygonal post. The connecting arm is provided with a second limiting hole corresponding to the second polygonal post, and the U-shaped fork is provided with a second positioning hole corresponding to the second polygonal post. When the second polygonal post passes through the second limiting hole and into the second positioning hole, there will be no relative rotation between the U-shaped fork and the connecting arm, ensuring reliable limiting, simple operation, and a simple, economical, and practical structure.
[0018] Furthermore, the inner side of the U-shaped fixing clip is provided with a first anti-slip pad, which increases the tightness of the contact between the U-shaped fixing clip and the bed frame, thereby increasing the friction and making the U-shaped fixing clip less likely to slide freely, ensuring reliable installation.
[0019] Furthermore, a second anti-slip pad is provided on the inner side of the U-shaped fork, which increases the tightness of contact between the U-shaped fork and the guardrail, thereby increasing the friction. The U-shaped fork is not easy to detach from the guardrail, and the support is reliable.
[0020] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:
[0021] During installation, first place the U-shaped fixing clip on the appropriate position on the crossbeam, then lock the U-shaped fixing clip using the first and second Torx handle screws. Next, rotate the U-shaped fork head to fit over the guardrail. Then, install the second and first limiters to restrict the free rotation of the U-shaped fork head and connecting arm, allowing the U-shaped fork head to support the guardrail and prevent it from falling freely, thus improving the stability of the guardrail. During use, when the second limiter disengages from the U-shaped fork head, the U-shaped fork head will rotate downwards, touching a microswitch. The microswitch sends a signal to the controller, which then activates the buzzer alarm to sound, alerting medical staff and allowing them to promptly prevent patients from getting out of bed or climbing over the guardrail and falling out of bed. Attached Figure Description
[0022] The present invention will be further described below with reference to the accompanying drawings:
[0023] Figure 1 This is a structural schematic diagram of a bed safety anchor for preventing falls according to this utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the present invention and its connection with the bed frame;
[0025] Figure 3 This is a schematic diagram of the structure connecting the connecting arm, the U-shaped fixing clamp, and the U-shaped fork head in this utility model;
[0026] Figure 4 This is a schematic diagram of the installation of the second limiting member in this utility model;
[0027] Figure 5 This is a schematic diagram of the installation of the first limiting member in this utility model;
[0028] Figure 6 This is a schematic diagram of the connection between the U-shaped fixing clip and the first and second Torx handle screws in this utility model.
[0029] In the diagram: 1-U-shaped fixing clamp; 2-U-shaped fork head; 3-connecting arm; 4-first limiting component; 5-second limiting component; 6-first Torx handle screw; 7-second Torx handle screw; 8-first end cap; 9-first polygonal column; 10-limiting base; 11-first limiting hole; 13-second end cap; 14-second polygonal column; 15-second limiting hole; 17-micro switch; 18-controller; 19-buzzer alarm; 20-first anti-slip pad; 21-second anti-slip pad; 22-crossbeam; 23-railing. Detailed Implementation
[0030] like Figures 1 to 3 As shown, this utility model provides a bed safety fastener for preventing falls, comprising: a U-shaped clamp 1, a U-shaped fork head 2, a connecting arm 3, a first limiting member 4, and a second limiting member 5. The connecting arm 3 rotatably connects the U-shaped clamp 1 and the U-shaped fork head 2. The U-shaped clamp 1 is used to be installed on the crossbeam 22 of the bed frame. A first Torx handle screw 6 is connected to the side of the U-shaped clamp 1.
[0031] Place the U-shaped fixing clip 1 onto the crossbeam 22 of the bed frame, and then rotate the first Torx handle screw 6 so that the end of the first Torx handle screw 6 is in close contact with the side of the crossbeam 22, resulting in a large frictional force, which restricts the free sliding of the U-shaped fixing clip 1 and ensures reliable fixing.
[0032] like Figure 6 As shown, the top surface of the U-shaped fixing clip 1 is connected to the second Torx handle screw 7.
[0033] The U-shaped fixing clip 1 is placed on the crossbeam 22 of the bed frame. Then, the first Torx handle screw 6 and the second Torx handle screw 7 are rotated so that the end of the first Torx handle screw 6 is in close contact with the side of the crossbeam 22 and the end of the second Torx handle screw 7 is in close contact with the top surface of the crossbeam 22. There is a large friction force, which restricts the movement in both directions. The U-shaped fixing clip 1 is more difficult to slide freely and is more reliable. This allows the U-shaped fixing clip 1 to adapt to crossbeams 22 of bed frames of different thicknesses, making it highly adaptable.
[0034] like Figure 5 As shown, the first limiting member 4 includes a first end cap 8 and a first polygonal column 9. The first end cap 8 is disposed on the first polygonal column 9. The cross-sectional diameter of the first end cap 8 is larger than the cross-sectional diameter of the first polygonal column 9. The U-shaped fixing clamp 1 is provided with a limiting base 10. The limiting base 10 is provided with a first limiting hole 11 corresponding to the first polygonal column 9. The connecting arm 3 is provided with a first positioning hole corresponding to the first polygonal column 9.
[0035] The first polygonal column 9 is passed through the first limiting hole 11 and into the first positioning hole. There will be no relative rotation between the U-shaped fixing clamp 1 and the connecting arm 3. The limiting is reliable and the operation is simple. The first limiting component 4 has a simple structure and is economical and practical.
[0036] like Figure 4 As shown, the second limiting member 5 includes a second end cap 13 and a second polygonal post 14. The second end cap 13 is disposed on the second polygonal post 14. The cross-sectional diameter of the second end cap 13 is larger than the cross-sectional diameter of the second polygonal post 14. The connecting arm 3 is provided with a second limiting hole 15 corresponding to the second polygonal post 14. The U-shaped fork head 2 is provided with a second positioning hole corresponding to the second polygonal post 14.
[0037] The second polygonal post 14 is passed through the second limiting hole 15 and into the second positioning hole. There will be no relative rotation between the U-shaped fork head 2 and the connecting arm 3. The limiting is reliable and the operation is simple. The second limiting part 5 has a simple structure and is economical and practical.
[0038] Microswitches 17, controllers 18, and buzzers 19 are respectively installed on connecting arm 3. The microswitches 17 are symmetrically distributed. The controllers 18 are connected to the microswitches 17 and the buzzers 19 through wires. The controllers 18 can be STM32 microcontrollers. The microswitches 17 can be of model D2F-F-3-7 or D2F-01FL. The buzzers 19 can be passive buzzers.
[0039] During installation, first, place the U-shaped fixing clip 1 onto the appropriate position on the crossbeam 22. Then, lock the U-shaped fixing clip 1 using the first Torx handle screw 6 and the second Torx handle screw 7. Next, rotate the U-shaped fork head 2 so that it fits onto the railing 23. Then, install the second limiting member 5 and the first limiting member 4 to restrict the free rotation of the U-shaped fork head 2 and the connecting arm 3, so that the U-shaped fork head 2 supports the railing 23 and prevents the railing from falling freely, thus improving the stability of the railing. During use, when the second limiting member 5 disengages from the U-shaped fork head 2, the U-shaped fork head 2 will rotate downward and touch the micro switch 17. The micro switch 17 sends a signal to the controller 18, and the controller 18 controls the buzzer alarm 19 to sound an alarm, alerting medical staff and allowing them to promptly prevent patients from getting out of bed or climbing over the railing and falling out of bed.
[0040] The inner side of the U-shaped fixing clip 1 is provided with a first anti-slip pad 20, which can be made of silicone material. This increases the tightness of the contact between the U-shaped fixing clip 1 and the bed frame, thereby increasing the friction. The U-shaped fixing clip 1 is not easy to slide freely, and the installation is reliable.
[0041] The inner side of the U-shaped fork head 2 is provided with a second anti-slip pad 21, which can be made of silicone material. This increases the tightness of contact between the U-shaped fork head 2 and the guardrail, thereby increasing the friction. The U-shaped fork head 2 is not easy to detach from the guardrail, and the support is reliable.
[0042] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A bed safety restraint for preventing falls, characterized in that, include: U-shaped fixing clips are used for mounting on the crossbeams of the bed frame; U-shaped forks, which are used to support the guardrails of the bed frame; A connecting arm that rotatably connects the U-shaped fixing clamp to the U-shaped fork head; The first limiting member is used to restrict the relative rotation between the connecting arm and the U-shaped fixing clamp; The second limiting member is used to restrict the relative rotation between the connecting arm and the U-shaped fork head; A micro switch, a controller, and a buzzer are respectively installed on the connecting arm, and the controller is electrically connected to the micro switch and the buzzer. When the U-shaped fork rotates to touch the micro switch, the micro switch sends a signal to the controller, and the controller controls the buzzer alarm to sound an alarm.
2. The bed safety anchor according to claim 1, characterized in that: The side of the U-shaped fixing clip is connected to a first Torx handle screw, which abuts against the bed frame to restrict the U-shaped fixing clip from sliding freely relative to the bed frame.
3. The bed safety anchor according to claim 1, characterized in that: The top surface of the U-shaped fixing clip is connected to a second Torx handle screw, which abuts against the bed frame to restrict the U-shaped fixing clip from sliding freely relative to the bed frame.
4. The bed safety anchor according to claim 1, characterized in that: The first limiting member includes a first end cap and a first polygonal post. The first end cap is disposed on the first polygonal post, and the cross-sectional diameter of the first end cap is larger than the cross-sectional diameter of the first polygonal post. The U-shaped fixing clamp is provided with a limiting base, and the limiting base is provided with a first limiting hole corresponding to the first polygonal post. The connecting arm is provided with a first positioning hole corresponding to the first polygonal post.
5. A bed safety anchor for preventing falls according to claim 1, characterized in that: The second limiting member includes a second end cap and a second polygonal post. The second end cap is disposed on the second polygonal post, and the cross-sectional diameter of the second end cap is larger than the cross-sectional diameter of the second polygonal post. The connecting arm is provided with a second limiting hole corresponding to the second polygonal post, and the U-shaped fork head is provided with a second positioning hole corresponding to the second polygonal post.
6. A bed safety anchor for preventing falls according to claim 1, characterized in that: The inner side of the U-shaped fixing clip is provided with a first anti-slip pad.
7. A bed safety anchor for preventing falls according to claim 1, characterized in that: The inner side of the U-shaped fork head is provided with a second anti-slip pad.
Citation Information
Patent Citations
Anti-falling sickbed guardrail alarm
CN210955427U