Wheelchair fixing belt alarm

Abstract

The utility model relates to a wheelchair fixing band alarm, a detection module is arranged in a fixing band lock catch, and a film pressure sensor, a sounding alarm module and the detection module are connected in series in a series circuit; the detection module comprises two elastic conducting strips, and the fixing belt spring bolt is made of an insulating material; when the fixing belt spring bolt and the fixing belt lock catch are not connected, the two elastic conducting strips are in contact; and when the fixing belt spring bolt and the fixing belt lock catch are buckled, the fixing belt spring bolt is inserted between the two elastic conducting strips. The beneficial effects of the utility model are that the detection module comprises the two elastic conducting strips, the contact and separation of the end parts of the two elastic conducting strips are controlled through the insertion of the spring bolt of the fixing belt made of an insulating material, and then the sounding alarm module is controlled to sound, so that the detection and alarm of the buckling condition of the fixing belt are realized; and the backrest self-generating module is connected in series in the series circuit and is used for converting force for extruding the backrest into electric energy to supply power to the series circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of medical supplies, and in particular comprises an alarm device for fixing a wheelchair. Background Art

[0002] Rehabilitation patients often need to go to the rehabilitation treatment room in a wheelchair to exercise the limb function of the affected side due to hemiplegia on one side. However, when patients are in a wheelchair, the wheelchair straps are often not fastened, causing the patients to fall from the wheelchair to the ground when pushing on the slope, resulting in a series of adverse consequences such as fractures and bruises. In order to prevent the frequent occurrence of adverse events such as wheelchair falls, it is necessary to use a strap, but some caregivers often forget to use the straps.

[0003] Therefore, there is an urgent need for an alarm that can prevent the accompanying personnel from forgetting to use the fixing belt to solve the above problem. Utility Model Content

[0004] The utility model aims to overcome the deficiencies in the prior art and provide a wheelchair fixing belt alarm.

[0005] The wheelchair fixing belt alarm is fixedly installed on the wheelchair, and comprises: a seat cushion, a backrest and a series circuit, a film pressure sensor is arranged in the seat cushion, and a sound alarm module is arranged on the backrest; fixing belts are respectively connected to both sides of the backrest, and the fixing belts on both sides of the backrest are buckled and connected by fixing belt locks and fixing belt lock tongues;

[0006] A detection module is provided in the fixed belt buckle, and the film pressure sensor, the sound alarm module and the detection module are all connected in series in a series circuit; the series circuit extends to the fixed belt buckle to connect the detection module; the detection module includes two elastic conductive sheets, and the fixed belt lock tongue is made of insulating material; when the fixed belt lock tongue and the fixed belt buckle are not connected, the two elastic conductive sheets are in contact; when the fixed belt lock tongue and the fixed belt buckle are buckled, the fixed belt lock tongue is inserted between the two elastic conductive sheets;

[0007] When the film pressure sensor detects pressure and the retaining belt lock tongue and the retaining belt lock buckle are not connected, the series circuit is completed.

[0008] Preferably, the backrest is provided with a raised structure for supporting the patient's waist, and the sound alarm module is arranged on the side of the backrest.

[0009] Preferably, a backrest self-generating module is also connected in series in the series circuit. The backrest self-generating module is arranged in the protruding structure of the backrest and is used to convert the force of squeezing the backrest into electrical energy to supply power to the series circuit.

[0010] Preferably, the film pressure sensor is buried inside the seat cushion, the series circuit is buried inside the seat cushion, the backrest and the fixing belt, and the series circuit is connected to the detection module in the fixing belt buckle through the fixing belt.

[0011] Preferably, the alarm is fixed to the wheelchair by means of a knot or a strap, and the height of the top of the backrest matches the height of the fixing strap.

[0012] The beneficial effects of the utility model are:

[0013] 1) The utility model has a thin film pressure sensor embedded in the seat cushion, a detection module in the fixing belt buckle, and the thin film pressure sensor, the sound alarm module and the detection module are all connected in series in a series circuit; the detection module includes two elastic conductive sheets, and the contact and separation of the ends of the two elastic conductive sheets are controlled by whether the fixing belt lock tongue made of insulating material is inserted, thereby controlling the sound alarm module to sound, thereby realizing the detection and alarm of the buckling status of the fixing belt.

[0014] 2) After the alarm and wheelchair of the utility model are installed, the detection module in the fixing belt lock is connected to the series circuit for use. Therefore, it can also be applied to wheelchairs that already have fixing belts. The function of fixing belt alarm is added to the original wheelchair, which is suitable for the expanded use of various wheelchairs.

[0015] 3) The utility model provides a backrest self-generating module in the raised structure of the backrest. The backrest self-generating module is connected in series in the series circuit to convert the force of squeezing the backrest into electrical energy to supply power to the series circuit. Every time the patient moves and squeezes the backrest, the self-generating module is triggered to form current, causing the sound alarm module to alarm repeatedly, so that the alarm does not need to be charged or the battery replaced, and is convenient for repeated use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram showing the installation of the alarm on a wheelchair;

[0017] Figure 2 Side view of the alarm mounted on a wheelchair;

[0018] Figure 3 is a schematic diagram of the alarm;

[0019] Figure 4 It is a side view of the alarm;

[0020] Figure 5 This is a schematic diagram of the film pressure sensor installed in the seat cushion;

[0021] Figure 6 It is a side view of the film pressure sensor installed in the seat cushion;

[0022] Figure 7 This is a schematic diagram of the connections of various modules in the alarm;

[0023] Figure 8 is a schematic diagram of the detection module when the fixing belt is buckled;

[0024] Fig. 9 It is a schematic diagram of the detection module when the fixing belt is not fastened.

[0025] Explanation of the reference numerals: wheelchair 1 , alarm 2 , seat cushion 21 , backrest 22 , fixing belt 3 , fixing belt buckle 31 , fixing belt lock tongue 32 , sound alarm module 4 , thin film pressure sensor 5 . DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, the utility model can also be modified in some ways without departing from the principle of the utility model, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

[0027] As an embodiment, the wheelchair fixing belt alarm, the alarm 2 is fixedly installed on the wheelchair 1, the alarm 2 includes: a seat cushion 21, a backrest 22 and a series circuit, the alarm 2 is fixed to the wheelchair 1 by a knot or a strap, the top height of the backrest 22 matches the height of the fixing belt 3, and also matches the height of the armrest of the wheelchair 1, so as to facilitate the fixation of the backrest 22 part.

[0028] like Figure 5 and Figure 6 As shown, a thin film pressure sensor 5 is embedded in the seat cushion 21. The thin film pressure sensor 5 is a prior art and is widely used in the seat belt reminder device of automobile seats. When the patient sits on the seat cushion 21, gravity acts on the thin film pressure sensor 5, and the circuit at the thin film pressure sensor 5 is connected. A sound alarm module 4 is provided on the backrest 22; the two sides of the backrest 22 are respectively connected with fixing belts 3, and the fixing belts 3 on both sides of the backrest 22 are buckled and connected by fixing belt buckles 31 and fixing belt lock tongues 32; the backrest 22 is provided with a convex structure for supporting the patient's waist, and the sound alarm module 4 is arranged on the side of the backrest 22, so that the patient will not block the sound alarm module 4 when leaning on the backrest 22, and the sound alarm module 4 does not affect the comfort of the backrest 22.

[0029] like Figure 7 As shown, a detection module is provided in the fixing belt buckle 31, and the film pressure sensor 5, the sound alarm module 4 and the detection module are all connected in series in a series circuit; Figure 8 and Fig. 9As shown, the detection module includes two elastic conductive sheets, and the fixed belt lock tongue 32 is made of insulating material; when the fixed belt lock tongue 32 and the fixed belt lock buckle 31 are not connected, the two elastic conductive sheets are in contact, and the series circuit is connected at the detection module. When the fixed belt lock tongue 32 and the fixed belt lock buckle 31 are buckled, the fixed belt lock tongue 32 is inserted between the two elastic conductive sheets, so that the ends of the two elastic conductive sheets are separated from each other. At this time, since the fixed belt lock tongue 32 is made of insulating material, the two elastic conductive sheets cannot be energized, so that the series circuit is disconnected at the detection module.

[0030] In this embodiment, the series circuit is buried inside the seat cushion 21, the backrest 22 and the fixing belt 3, that is, the alarm 2 comes with a fixing belt 3, and the series circuit extends to the fixing belt buckle 31 to connect with the detection module; however, the detection module can also be installed separately in the fixing belt buckle 31 of the existing fixing belt 3 of the wheelchair 1, and the surface of the fixing belt lock tongue 32 can be modified to make it insulated. After the alarm 2 is installed and fixed, the detection module is connected in series to the series circuit through the circuit line, thereby realizing the function expansion of the wheelchair 1 with an existing fixing belt 3 but no alarm 2.

[0031] Under the condition that the film pressure sensor 5 detects pressure and the fixing belt lock tongue 32 and the fixing belt lock buckle 31 are not connected, the series circuit path is connected and the triggering condition of the alarm is met.

[0032] In this embodiment, a backrest self-generating module is also provided in the raised structure of the backrest 22. The backrest self-generating module is connected in series in the series circuit and is used to convert the force of squeezing the backrest 22 into electrical energy to power the series circuit. The backrest self-generating module is a prior art. When the patient leans back against the raised structure of the backrest 22, the internal backrest self-generating module is pressed down, and a certain electric potential is formed by the principle of electromagnetic induction, thereby powering each module in the series circuit.

[0033] When the film pressure sensor 5 detects pressure and determines that the patient is sitting on the wheelchair 1 and the fixing belt 3 is not fastened, the series circuit as a whole is open. At this time, the patient's squeezing force on the backrest 22 is converted into electrical energy, and the sound alarm module 4 sounds an alarm to remind the caregiver to fasten the fixing belt lock tongue 32 and the fixing belt buckle 31; and in this case, every time the patient moves and squeezes the backrest 22, the self-generating module will be triggered to form current, causing the sound alarm module 4 to repeatedly alarm, so that the alarm 2 does not need to be charged or the battery replaced, and is convenient for repeated use.

[0034] At the same time, a stable power source such as a battery can also be used to power the series circuit, so that the sound alarm module 4 can continuously cycle and sound the alarm until the fixing belt 3 is buckled and the fixing belt lock tongue 32 is inserted between the two elastic conductive sheets, so that the ends of the two elastic conductive sheets are separated from each other.

Claims

1. A wheelchair fixing belt alarm, characterized in that: The alarm is fixedly installed on the wheelchair, and includes: a seat cushion, a backrest and a series circuit. A film pressure sensor is arranged in the seat cushion, and a sound alarm module is arranged on the backrest. The two sides of the backrest are respectively connected with fixing belts, and the fixing belts on both sides of the backrest are buckled and connected by fixing belt locks and fixing belt lock tongues. A detection module is provided in the fixed belt buckle, and the film pressure sensor, the sound alarm module and the detection module are all connected in series in a series circuit; the series circuit extends to the fixed belt buckle to connect the detection module; the detection module includes two elastic conductive sheets, and the fixed belt lock tongue is made of insulating material; when the fixed belt lock tongue and the fixed belt buckle are not connected, the two elastic conductive sheets are in contact; when the fixed belt lock tongue and the fixed belt buckle are buckled, the fixed belt lock tongue is inserted between the two elastic conductive sheets; When the film pressure sensor detects pressure and the retaining belt lock tongue and the retaining belt lock buckle are not connected, the series circuit is completed.

2. The wheelchair fixing belt alarm according to claim 1, characterized in that: The backrest is provided with a raised structure for supporting the patient's waist, and the sound alarm module is arranged on the side of the backrest.

3. The wheelchair fixing belt alarm according to claim 2, characterized in that: A backrest self-generating module is also connected in series in the series circuit. The backrest self-generating module is arranged in the protruding structure of the backrest and is used to convert the force of squeezing the backrest into electrical energy to supply power to the series circuit.

4. The wheelchair fixing belt alarm according to claim 1, characterized in that: The film pressure sensor is buried inside the seat cushion, the series circuit is buried inside the seat cushion, the backrest and the fixing belt, and the series circuit is connected to the detection module in the fixing belt buckle through the fixing belt.

5. The wheelchair fixing belt alarm according to claim 1, characterized in that: The alarm is fixed to the wheelchair by a knot or strap, and the height of the top of the backrest matches the height of the fixing strap.

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