Rehabilitation training falling-down automatic alarm device

Abstract

The invention discloses a rehabilitation training tumble automatic alarm device which comprises a training vehicle, a supporting pipe is fixedly connected to the training vehicle, a pressing rod is slidably connected to the interior of the supporting pipe and connected with the supporting pipe through a pressing spring, the supporting pipe is detachably connected with a protective shell, and an alarm switch is arranged in the protective shell. The repeated rising times of the pressing rod are larger than a threshold value or the single rising distance of the pressing rod is larger than the threshold value, and the alarm switch can be driven to work to give an alarm. The device is convenient to operate, rehabilitation training of a patient can be achieved, when the patient falls down, an alarm can be given in time, and the protection effect on rehabilitation training of the patient can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of alarm devices, and particularly to an automatic fall alarm device for rehabilitation training. Background Art

[0002] When a patient's body is damaged and needs rehabilitation, medical devices are often used for training. When a patient's leg is traumatized and cannot walk directly, a walking aid is used to assist the patient in walking training so that the patient can recover as soon as possible. The walking aid is simple and convenient to operate and is widely used.

[0003] After retrieval, a patent with the publication number CN 213406026 U discloses a fall alarm device for rehabilitation care, including an accessory box. At the top of the inner cavity of the accessory box, a universal ball is fixedly installed. At the bottom of the universal ball, a connecting rod is fixedly installed. At the bottom of the connecting rod, a counterweight ball is welded. On the surface of the connecting rod, a push rod is hinged. On the surface of the push rod, a sleeve is slidably connected. On one side of the inner cavity of the sleeve, a trigger switch is fixedly installed. However, the above device still has the following problems: it will alarm only after the patient falls, which has a time lag and is not conducive to the safety protection of the user. Moreover, when the patient has a unilateral fall, there may be a problem that the alarm cannot be triggered in time, and its protection is not comprehensive enough. Summary of the Invention

[0004] In order to solve the problems existing in the above-mentioned prior art, an automatic fall alarm device for rehabilitation training is provided.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows: The present invention provides an automatic fall alarm device for rehabilitation training, including a training cart. The training cart is fixedly connected with a support tube. A pressure rod is slidably connected in the support tube. The pressure rod is connected to the support tube through a compression spring. The support tube is detachably connected with a protective shell. An alarm switch is arranged in the protective shell. When the number of times the pressure rod rises repeatedly is greater than a threshold value or the distance that the pressure rod rises once is greater than a threshold value, it can drive the alarm switch to work and achieve an alarm.

[0006] Preferably, a lead screw is slidably connected to the support tube. The lead screw is arranged on one side of the alarm switch. The lead screw can press the alarm switch to make the alarm switch work.

[0007] Preferably, a nut is arranged in cooperation with the lead screw. The nut is connected to the support tube through a second one-way bearing. The nut is connected with a gear through a first one-way bearing. The pressure rod is fixedly connected with a rack. The rack can be meshed with the gear.

[0008] Preferably, the lead screw is connected to the nut through a spring, and the spring is always in a compressed state. When the nut and the lead screw are disengaged, the spring can drive the lead screw to continue moving towards the proximity switch, enabling the proximity switch to operate.

[0009] Preferably, when the rack descends, the gear rotates relative to the nut, and at this time, the nut does not rotate.

[0010] Preferably, when the rack ascends, the gear drives the nut to rotate through a first one-way bearing. At this time, the nut drives the lead screw to move towards the proximity switch.

[0011] Preferably, when the elastic force of the compression spring keeps the pressure rod in its initial state, the middle positions of the gear and the rack are engaged.

[0012] Preferably, when the patient presses the pressure rod downward for rehabilitation training, the rack is located below the gear and there is a gap between the rack and the gear. When the downward pressure on the pressure rod completely disappears, at this time, the compression spring drives the gear to rotate through the rack, and then drives the lead screw to move a distance that can disengage the lead screw from the nut.

[0013] Preferably, a guide rod penetrates through the protective shell. After passing through the protective shell, the guide rod is threadedly connected with a nut, and the nut abuts against the outer wall of the protective shell. The lead screw is provided with a through hole for the free sliding of the guide rod.

[0014] Preferably, a pressing rod that can press the proximity switch is slidably connected to the protective shell. The pressing rod is connected to the protective shell through a small spring. A pin for limiting the pressing rod is slidably connected to the protective shell, and the pin is connected to the pressure rod through an elastic cord. When the pressure rod is pressed to the bottommost end, the elastic cord can pull the pin to release the limit on the pressing rod, and the small spring can drive the pressing rod to reset, enabling the proximity switch to operate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This application is provided with a pressure rod. When the patient conducts rehabilitation training and presses the pressure rod downward, during the normal downward pressing process of the patient, at this time, the rack is below the gear and has a certain distance from the gear. Therefore, normal rehabilitation training will not cause the gear to rotate. If the patient repeatedly topples over, at this time, the rising distance of the pressure rod can drive the nut to rotate. When the rotation of the nut accumulates to a certain number of turns, it can drive the lead screw to press the proximity switch, enabling timely warning when the patient repeatedly topples over and is at risk of falling, and playing a protective role in the patient's rehabilitation training.

[0016] 2. The present application is provided with a rack having a suitable length. When a patient falls, the external force on the pressure rod suddenly disappears at this time. Due to the elastic force of the compression spring, the height that the pressure rod can rise is higher than the initial state. At this time, the length of the rack is suitable enough to drive the nut to rotate a sufficient number of turns, and thus can drive the screw rod to move a sufficient distance, so as to realize the alarm function when the patient suddenly falls, and thus is more beneficial to the patient's rehabilitation training.

[0017] 3. The present application is provided with a one-way bearing. The one-way bearing can achieve that when the pressure rod descends, it will not drive the nut to rotate at this time. Only when the pressure rod rises and the rack drives the gear to rotate at this time, will the nut be driven to rotate. When the screw rod and the nut are disengaged, since the spring is in a compressed state at this time, it can drive the screw rod to continue to move, so that the alarm switch is in a state of continuous pressing, and the alarm switch can always work. At the same time, when the nut and the screw rod are disengaged, the pressure rod can move arbitrarily at this time and will not drive the screw rod to continue to move, thus preventing damage to the screw rod.

[0018] 4. The present application is provided with an elastic cord. When the patient has a unilateral fall, the patient will suddenly press down one side of the pressure rod at this time, and the pressure rod will move downward by an excessive distance. When the pressure rod descends to the bottom end, it can drive the latch to move through the elastic cord, so as to release the limit on the pressing rod. At this time, the pressing rod presses the alarm switch, and the automatic alarm when the patient has a unilateral fall can be realized, which can further improve the protection effect of the patient's rehabilitation training and achieve the all-round protection of the patient's rehabilitation training. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where: Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the overall front view of the present invention; Figure 3 is the overall side view in Embodiment 1; Figure 4 is Figure 3 the enlarged view of the structure of Part A in Figure 5 is Figure 3 the enlarged view of the structure of Part B in Figure 6 is Figure 4 the three-dimensional view of the screw rod structure in Figure 7 is the overall side view in Embodiment 2; Figure 8 is Figure 7 the enlarged view of the structure of Part C in Figure 9 isFigure 7 Enlarged view of part D in the middle

[0020] Description of the reference numerals in the drawings: 1 Training vehicle; 2 Pressure rod; 3 Rack; 4 Support tube; 5 Gear; 6 First one-way bearing; 7 Second one-way bearing; 8 Nut; 9 Lead screw; 10 Nut; 11 Alarm switch; 12 Guide rod; 13 Spring; 14 Compression spring; 15 Through hole; 16 Protective shell; 17 Elastic cord; 18 Pressing rod; 19 Pin; 20 Guide wheel. Specific embodiments

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0022] Embodiment 1 As Figures 1-6 shown, this embodiment proposes a rehabilitation training fall automatic alarm device, including a training vehicle 1. Support tubes 4 are fixedly connected to both sides of the training vehicle 1. A pressure rod 2 is slidably connected inside the support tube 4. The pressure rod 2 is connected to the support tube 4 through a compression spring 14. The pressure rod 2 is slidably arranged inside the support tube 4, and the support tube 4 plays a role in limiting and guiding the movement of the pressure rod 2.

[0023] The upper end of the compression spring 14 is connected to the pressure rod 2, and the lower end of the compression spring 14 is connected to the support tube 4. When using the training vehicle 1, at this time, the patient presses down the pressure rods 2 on both sides with both hands, so that the compression spring 14 is in a compressed state. The pressure rod 2 is connected to a brake, and the brake can brake the training vehicle 1. At the same time, a placement plate is fixedly connected between the support tubes 4, and the placement plate is used to place the sundries of the patient.

[0024] The support tube 4 is detachably connected with a protective shell 16. The protective shell 16 is detachably connected to the support tube 4 by means of threaded connection. An alarm switch 11 is detachably connected inside the protective shell 16. The alarm switch 11 is detachably connected to the protective shell 16 by means of threaded connection. The alarm switch 11 is connected to a controller. When the number of times the pressure rod 2 rises repeatedly is greater than a threshold value or the distance that the pressure rod 2 rises once is greater than a threshold value, it can drive the alarm switch 11 to work to achieve an alarm.

[0025] A lead screw 9 is slidably connected to the support tube 4. The lead screw 9 is arranged on one side of the alarm switch 11. The lead screw 9 can press the alarm switch 11 to realize the operation of the alarm switch 11. The support tube 4 and the protective shell 16 are in a communicating state. One end of the lead screw 9 is located inside the protective shell 16. Therefore, the lead screw 9 can move inside the protective shell 16 to press the alarm switch 11.

[0026] The alarm switch 11 can specifically adopt a push-type alarm switch. When it is not pressed, the alarm switch is in a standby state. At this time, the circuit is disconnected and the alarm will not work. When the lead screw 9 presses the alarm switch 11, the spring mechanism is compressed, resulting in the closure of the circuit. The current flows through the circuit board to the alarm switch 11, triggering the alarm switch 11 to work. At the same time, the alarm switch 11 transmits a corresponding signal to the controller.

[0027] A nut 8 is arranged in cooperation with the lead screw 9. The nut 8 is connected to the support tube 4 through a second one-way bearing 7. The nut 8 is connected to a gear 5 through a first one-way bearing 6. The pressure rod 2 is fixedly connected to a rack 3, and the rack 3 can mesh with the gear 5.

[0028] The second one-way bearing 7 and the first one-way bearing 6 are arranged in opposite directions. A one-way bearing is a bearing that can rotate freely in one direction and is locked in the other direction. Inside the metal shell of the one-way bearing, there are many rollers, needle rollers or balls, and the shape of its rolling seat (cavity) makes it only able to roll in one direction and will generate great resistance in the other direction (the so-called "one-way").

[0029] The lead screw 9 is connected to the nut 8 through a spring 13. A groove is formed inside the nut 8, and the spring 13 is arranged in the groove. The right end of the spring 13 is connected to the lead screw 9, and the left end of the spring 13 abuts against the groove of the nut 8, and the spring 13 can move freely in the groove. When the nut 8 rotates, at this time the spring 13 rotates relatively in the groove, and at the same time as the movement of the lead screw 9, the spring 13 gradually returns to its original position.

[0030] The spring 13 is always in a compressed state. One end of the lead screw 9 is a smooth round rod, and the diameter of the round rod is smaller than the diameter of the threaded part of the lead screw 9. When the nut 8 and the lead screw 9 are disengaged, at this time the round rod part is inside the nut 8, and the spring 13 can drive the lead screw 9 to continue moving in the direction closer to the alarm switch 11 to realize the operation of the alarm switch 11.

[0031] When the rack 3 descends, the gear 5 rotates relative to the nut 8. At this time, the nut 8 does not rotate. When the rack 3 ascends, the gear 5 drives the nut 8 to rotate through the first one-way bearing 6. At this time, the nut 8 drives the lead screw 9 to move in the direction closer to the alarm switch 11.

[0032] The one-way bearing can achieve that when the pressure rod 2 descends, the lead screw nut 8 will not be driven to rotate at this time. Only when the pressure rod 2 ascends, the rack 3 drives the gear 5 to rotate, and then the lead screw nut 8 will be driven to rotate. When the lead screw 9 and the lead screw nut 8 are disengaged, the spring 13 can drive the lead screw 9 to continue moving because it is in a compressed state at this time, so that the alarm switch 11 is continuously pressed, enabling the alarm switch 11 to work continuously. At the same time, the lead screw nut 8 and the lead screw 9 are disengaged, and at this time, the pressure rod 2 can move arbitrarily without driving the lead screw 9 to continue moving, thus preventing damage to the lead screw 9.

[0033] When the elastic force of the compression spring 14 makes the pressure rod 2 in the initial state, the middle positions of the gear 5 and the rack 3 are engaged. When a person presses down the pressure rod 2 for rehabilitation training, the rack 3 is below the gear 5 and there is a gap between the rack 3 and the gear 5. Therefore, when the patient gently raises the arm and the pressure rod 2 moves within a small range, the gear 5 will not be engaged with the rack 3 at this time, so the gear 5 will not be driven to rotate.

[0034] During the patient's rehabilitation training, the patient presses down on the pressure rod 2. During the normal downward pressing process of the patient, the rack 3 is below the gear 5 and has a certain distance from the gear 5. Therefore, normal rehabilitation training will not cause the gear 5 to rotate. If the patient experiences repeated tipping, the pressure rod 2 rises a relatively large distance at this time, so it can drive the lead screw nut 8 to rotate. When the lead screw nut 8 rotates a certain number of turns, it can drive the lead screw 9 to press the alarm switch 11, enabling timely warning when the patient has a risk of repeated tipping and falling, playing a protective role in the patient's rehabilitation training.

[0035] The length of the rack 3 is appropriate. When the downward pressure on the pressure rod 2 completely disappears, the compression spring 14 drives the gear 5 to rotate through the rack 3, and then drives the lead screw 9 to move a distance that can disengage the lead screw 9 and the lead screw nut 8.

[0036] When the patient falls, the external force on the pressure rod 2 suddenly disappears. Due to the elastic force of the compression spring 14, the pressure rod 2 can rise higher than the initial state. At this time, the length of the rack 3 is appropriate, which can drive the lead screw nut 8 to rotate a sufficient number of turns, and thus can drive the lead screw 9 to move a sufficient distance, so as to achieve the alarm work when the patient suddenly falls, which is more beneficial to the patient's rehabilitation training.

[0037] The protective shell 16 is provided with a guide rod 12. The guide rod 12 passes through the protective shell 16 and is threadedly connected with a nut 10. The nut 10 abuts against the outer wall of the protective shell 16. The lead screw 9 is provided with a through hole 15 for the free sliding of the guide rod 12. The guide rod 12 slides in the through hole 15, so that the lead screw 9 can only slide in the horizontal direction. The setting of the guide rod 12 limits and guides the movement of the lead screw 9.

[0038] Example Two Reference Appendix Figures 7-9 , other structures are the same as those in Example One. The difference is that in this embodiment, considering the problem that if the patient has a unilateral fall, the downward pressure on the unilateral pressure bar may be too large a distance, and the alarm may not be triggered in time.

[0039] The protective shell 16 is slidably connected with a pressing rod 18 that can press the alarm switch 11. The pressing rod 18 is connected to the protective shell 16 through a small spring. The protective shell 16 is slidably connected with a retaining pin 19 that limits the pressing rod 18. The retaining pin 19 is connected to the pressure bar 2 through an elastic cord 17.

[0040] The pressing rod 18 can only slide in the vertical direction. The small spring is sleeved on the pressing rod 18. One end of the small spring is connected to the pressing rod 18, and the other end is connected to the protective shell 16. The elastic force of the small spring can make the pressing rod 18 rise to press the alarm switch 11. The retaining pin 19 can only slide in the horizontal direction. A limiting hole for the retaining pin 19 to slide into is provided on the pressing rod 18.

[0041] The support tube 4 is rotatably connected with a guide wheel 20. The elastic cord 17 is hung on the guide wheel 20. When the pressure bar 2 is pressed to the bottom end, the elastic cord 17 can pull the retaining pin 19 to release the limit on the pressing rod 18, and the small spring can drive the pressing rod 18 to reset, making the alarm switch 11 work.

[0042] When the patient has a unilateral fall, at this time the patient will suddenly press down one side of the pressure bar 2, and the pressure bar 2 will move downward too much distance. When the pressure bar 2 drops to the bottom end, it can drive the retaining pin 19 to move through the elastic cord 17, thereby releasing the limit on the pressing rod 18. At this time, the pressing rod 18 presses the alarm switch 11, which can realize automatic alarm when the patient has a unilateral fall, can further improve the protection effect of the patient's rehabilitation training, and realize all-round protection for the patient's rehabilitation training.

[0043] A method for using a rehabilitation training fall automatic alarm device, using the above-mentioned rehabilitation training fall automatic alarm device, includes the following steps: When the patient conducts rehabilitation training, press down the pressure bar 2 to compress the compression spring 14. At this time, the rack 3 is below the gear 5 and has a gap with the gear 5. When the pressure bar 2 descends, the rack 3 drives the gear 5 to rotate. At this time, the gear 5 rotates relative to the lead nut 8, and the lead nut 8 does not rotate; When the patient has a fall, at this time the downward pressure of the patient on the pressure bar 2 decreases. The compression spring 14 can drive the pressure bar 2 to rise, drive the rack 3 to engage with the gear 5, the rack 3 drives the gear 5 to rotate, and the gear 5 drives the lead nut 8 to rotate through the first one-way bearing 6, and the lead nut 8 drives the lead screw 9 to move towards the direction close to the alarm switch 11; When the patient has multiple dumping incidents, the lead screw 9 can be moved to disengage from the lead nut 8. At this time, the spring 13 drives the lead screw 9 to continue moving in the direction closer to the alarm switch 11. When the lead screw 9 presses the alarm switch 11, the alarm work is realized; When the patient falls, the downward pressure on the pressure rod 2 completely disappears at this time. At this time, the compression spring 14 drives the gear 5 to rotate through the rack 3, and then drives the distance of the lead screw 9 to move, enabling the lead screw 9 and the lead nut 8 to disengage from each other. When the patient falls, the external force on the pressure rod 2 suddenly disappears at this time. Due to the elastic force of the compression spring 14, the height that the pressure rod 2 can rise is higher than the initial state. At this time, the length of the rack 3 is sufficient to drive the lead nut 8 to rotate enough turns, and can also drive the lead screw 9 to move a sufficient distance, so that the lead screw 9 and the lead nut 8 are disengaged. The spring 13 drives the lead screw 9 to move, pressing the alarm switch 11 to give an alarm.

[0044] If the patient has a unilateral dumping incident, at this time the patient presses the pressure rod 2 on one side, which can press the pressure rod 2 to the bottom end. The pressure rod 2 drives the pin 19 to move through the elastic cord 17, thereby releasing the limit on the pressing rod 18. At this time, the pressing rod 18 presses the alarm switch 11 to realize the alarm.

[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic fall alarm device for rehabilitation training, comprising a training vehicle (1), the training vehicle (1) is fixedly connected with a support pipe (4), a pressure rod (2) is slidably connected in the support pipe (4), the pressure rod (2) is connected to the support pipe (4) through a compression spring (14), and is characterized in that, The support tube (4) is detachably connected with a protective shell (16). An alarm switch (11) is arranged inside the protective shell (16). When the number of times the pressing rod (2) rises repeatedly is greater than a threshold value or the distance that the pressing rod (2) rises once is greater than the threshold value, the alarm switch (11) can be driven to work to achieve an alarm.

2. The automatic fall alarm device for rehabilitation training according to claim 1, wherein A lead screw (9) is slidably connected to the support tube (4). The lead screw (9) is arranged on one side of the alarm switch (11). The lead screw (9) can press the alarm switch (11) to make the alarm switch (11) work.

3. The automatic fall alarm device for rehabilitation training according to claim 2, characterized in that, A nut (8) is arranged in cooperation with the lead screw (9). The nut (8) is connected to the support tube (4) through a second one-way bearing (7). The nut (8) is connected with a gear (5) through a first one-way bearing (6). The pressing rod (2) is fixedly connected with a rack (3). The rack (3) can be meshed with the gear (5).

4. The automatic fall alarm device for rehabilitation training according to claim 3, wherein, The lead screw (9) is connected with the nut (8) through a spring (13). The spring (13) is always in a compressed state. When the nut (8) is disengaged from the lead screw (9), the spring (13) can drive the lead screw (9) to continue moving in the direction close to the alarm switch (11) to make the alarm switch (11) work.

5. The automatic fall alarm device for rehabilitation training according to claim 4, characterized in that, When the rack (3) descends, the gear (5) rotates relative to the nut (8), and at this time, the nut (8) does not rotate.

6. The automatic fall alarm device for rehabilitation training according to claim 4, wherein When the rack (3) ascends, the gear (5) drives the nut (8) to rotate through the first one-way bearing (6). At this time, the nut (8) drives the lead screw (9) to move in the direction close to the alarm switch (11).

7. The automatic fall alarm device for rehabilitation training according to claim 4, wherein, When the elastic force of the compression spring (14) makes the pressing rod (2) in the initial state, the middle positions of the gear (5) and the rack (3) are meshed.

8. The automatic fall alarm device for rehabilitation training according to claim 4, characterized in that When the pressing rod (2) is pressed manually for rehabilitation training, the rack (3) is located below the gear (5), and there is a gap between the rack (3) and the gear (5). When the downward pressure on the pressing rod (2) completely disappears, at this time, the compression spring (14) drives the gear (5) to rotate through the rack (3), and further drives the distance that the lead screw (9) moves, so that the lead screw (9) and the nut (8) are disengaged.

9. The automatic fall alarm device for rehabilitation training according to claim 2, wherein, A guide rod (12) penetrates through the protective shell (16). After the guide rod (12) penetrates through the protective shell (16), it is threadedly connected with a nut (10). The nut (10) abuts against the outer wall of the protective shell (16). A through hole (15) for the free sliding of the guide rod (12) is formed in the lead screw (9).

10. The automatic fall alarm device for rehabilitation training according to claim 1, characterized in that, A pressing rod (18) capable of pressing the alarm switch (11) is slidably connected to the protective shell (16). The pressing rod (18) is connected with the protective shell (16) through a small spring. A retaining pin (19) for limiting the pressing rod (18) is slidably connected to the protective shell (16). The retaining pin (19) is connected with the pressing rod (2) through an elastic cord (17). When the pressing rod (2) is pressed to the bottom end, the elastic cord (17) can pull the retaining pin (19) to release the limit on the pressing rod (18), and the small spring can drive the pressing rod (18) to reset to make the alarm switch (11) work.

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