Anti-falling walking stick based on vacuum chuck

Abstract

The utility model provides an anti-falling crutch based on vacuum chucks, which relates to the technical field of crutches and comprises a handrail, an outer rod and a base, the handrail and the base are fixedly connected to two ends of the outer rod respectively, a plurality of conventional chucks are mounted on the base, and an anti-falling negative pressure chuck is mounted at the axis of the base in a lifting movable manner. The anti-falling negative-pressure suction cup is arranged in a fixed and limited mode away from the ground in a conventional state, the negative-pressure pump works, so that a negative-pressure adsorption state is formed between the anti-falling negative-pressure suction cup and the ground, the base, the outer rod fixedly connected with the base and the handrail are fixed, and the crutch is prevented from falling down. By means of the design, the handrail can be fixed in daily use, stable support can be rapidly provided for a user by pressing the button when the gravity center of the body is unstable, and then the risk that the user accidentally falls down is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of walking sticks, in particular to a fall-proof walking stick based on a vacuum sucker. Background Technique

[0002] In the prior art, there is a walking stick with the publication number of "CN204949815U", which is composed of a spring, a flexible rubber sleeve, a plug, a rod body A, a handle, a spherical ball, a vertical rod, a rod body B, a columnar gap, a circular chassis, a circular rubber gasket, and a sucker. The walking stick is mainly composed of the rod body A, the rod body B, and the vertical rod. The rod body A is inserted into the rod body B. There is an air hole left on the left side of the rod body B, and the air hole is plugged with a plug. A handle is provided at the top of the rod body A, and a circular chassis is provided at the bottom of the rod body B. Four springs are connected to the lower surface of the circular chassis. The vertical rod passes through the handle, the rod body A, and the circular chassis. A spherical ball is connected to the top of the vertical rod, and a sucker is connected to the bottom of the vertical rod. When in use, the user holds the handle and walks with the assistance of this walking stick. When taking a bus, the user presses the vertical rod down until the sucker at the bottom of the vertical rod adsorbs on the ground inside the vehicle. Its beneficial effect is that the design is simple, reliable and durable, and has great practicability.

[0003] However, there are still obvious defects in the use process of the above device: Although the above walking stick realizes the function of auxiliary fixation, the operation of its negative pressure adsorption process is relatively cumbersome. In an emergency state, the above device relies too much on manual operation, which may lead to the inability to achieve the fixation effect, and thus is not conducive to ensuring the safety of the user. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fall-proof walking stick based on a vacuum sucker to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fall-proof walking stick based on a vacuum sucker includes a handrail, an outer rod, and a base. The handrail and the base are respectively fixedly connected to both ends of the outer rod. A plurality of auxiliary suckers are installed on the base. A fall-proof negative pressure sucker is also installed on the base at the axis in a lifting and movable manner. The fall-proof negative pressure sucker is fixedly limited from the ground in a contracted state. A button for releasing the fixed limit of the fall-proof negative pressure sucker from the ground is provided on the handrail. After pressing the button, the fall-proof negative pressure sucker moves downward and contacts the ground. The fall-proof negative pressure sucker is communicated with a negative pressure pump in the base. After the fall-proof negative pressure sucker contacts the ground, the negative pressure pump works, so that a negative pressure adsorption state is formed between the fall-proof negative pressure sucker and the ground, thereby fixing the base and the outer rod and the handrail fixedly connected thereto to prevent the walking stick from tipping over.

[0007] Preferably, the number of the auxiliary suckers is four and they are arranged in an annular array along the axis of the base.

[0008] Preferably, the anti-fall negative pressure suction cup is fixedly connected to the inner rod. One end of the inner rod away from the anti-fall negative pressure suction cup passes through the outer rod and extends into the inner cavity opened in the armrest. A limiting notch groove is formed on the rod body of the inner rod at one end of the armrest. The limiting notch groove is movably matched with the limiting block. One side of the limiting block is also fixedly connected with a limiting spring. One end of the limiting spring away from the limiting block abuts against the inner wall of the armrest. The limiting spring is used to push the limiting block into the limiting notch groove under the action of no external force. The button is fixedly installed on the side of the limiting block away from the limiting spring. By pressing the button, the limiting block is pushed to overcome the elastic force of the limiting spring and thus pushed to disengage from the cooperation with the limiting notch groove. After the disengagement, the inner rod moves downward under the influence of its own weight until the anti-fall negative pressure suction cup contacts the ground.

[0009] Preferably, a starting stop block is also fixedly connected to the inner rod, and a negative pressure pump start button is also fixedly installed on the outer rod. During the downward movement of the inner rod, the starting stop block moves towards the negative pressure pump start button until finally pressing the negative pressure pump start button. At this time, the negative pressure pump start button conducts the negative pressure pump circuit to control the operation of the negative pressure pump.

[0010] Preferably, a reset toggle rod is also fixedly installed on the inner rod. The reset toggle rod extends outside the outer rod and is fixedly connected to the toggle block. By pushing the toggle block upward, the inner rod is pushed upward, so that the limiting notch groove is matched with the limiting block again, and then the anti-fall negative pressure suction cup is pushed into the off-the-ground limiting state again.

[0011] Preferably, a movable seat is also fixedly sleeved on the inner rod, a fixed seat is fixedly installed on the inner wall of the outer rod, and an action spring is installed between the fixed seat and the movable seat. The action spring is used to push the inner rod to move downward after the off-the-ground limit is released.

[0012] Preferably, a reset push block is also fixedly installed on the side of the limiting block where the limiting spring is located. The reset push block is movably matched with the negative pressure release button. The negative pressure release button is fixedly installed in the inner cavity of the armrest. When the reset push block contacts the negative pressure release button, the negative pressure pump changes from the suction state to the inflation state. At this time, it is convenient for the anti-fall negative pressure suction cup to disengage from the adsorption state with the ground.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The present invention adsorbs through the built-in negative pressure pump. When facing the need for negative pressure adsorption, only by pressing the button can it quickly enter the negative pressure adsorption and fixation state. This design can not only play the role of fixing the armrest during daily use, but also quickly provide stable support for the user by pressing the button when, for example, the body center of gravity is unstable, thereby reducing the risk of accidental falls of the user and greatly improving the practicability of the device. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a side view schematic diagram of the overall structure of the present utility model;

[0017] Figure 3 is a sectional view schematic diagram of the partial structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the connection structure of the limit clamping block of the present utility model.

[0019] In the figure: 1 armrest, 2 outer rod, 3 base, 4 auxiliary suction cup, 5 anti-fall negative pressure suction cup, 6 button, 7 negative pressure pump, 8 inner rod, 9 limit notch groove, 10 limit clamping block, 11 limit spring, 12 start stop block, 13 negative pressure pump start button, 14 reset toggle lever, 15 toggle block, 16 movable seat, 17 fixed seat, 18 action spring, 19 reset push block, 20 negative pressure release button. Detailed Description of the Preferred Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0022] Embodiment 1:

[0023] An anti-fall cane based on a vacuum suction cup, comprising an armrest 1, an outer rod 2 and a base 3. The armrest 1 and the base 3 are respectively fixedly connected to both ends of the outer rod 2. A plurality of auxiliary suction cups 4 are installed on the base 3. An anti-fall negative pressure suction cup 5 is also installed on the base 3 at the center in a lifting and movable manner. The anti-fall negative pressure suction cup 5 is fixedly and limitedly set off the ground in a contracted state. A button 6 for releasing the fixed limit of the anti-fall negative pressure suction cup 5 from the ground is provided on the armrest 1. After pressing the button 6, the anti-fall negative pressure suction cup 5 moves downward and contacts the ground. The anti-fall negative pressure suction cup 5 is communicated with a negative pressure pump 7 in the base 3. After the anti-fall negative pressure suction cup 5 contacts the ground, the negative pressure pump 7 works so that a negative pressure adsorption state is formed between the anti-fall negative pressure suction cup 5 and the ground, thereby fixing the base 3 and the outer rod 2 and the armrest 1 fixedly connected thereto, preventing the cane from tipping over.

[0024] In this embodiment, the armrest 1, the outer rod 2 and the base 3 form the main structure of the cane. The auxiliary suction cups 4 at the bottom of the base 3 are to meet the daily anti-slip and stability requirements. The number of the auxiliary suction cups 4 is four and they are arranged in an annular array along the axis of the base 3. Their suction cup diameters are relatively small and they can quickly separate from the ground when the cane is lifted, thus reducing the user's burden. At the axis of the base 3, a fall-proof negative pressure suction cup 5 is also provided. In the normal use state, it is in a fixed limit state away from the ground, and its height from the ground is between 5 mm and 5 cm, which can be adjusted according to actual needs. At this time, the main function of adsorption and fixation is mainly carried out by the auxiliary suction cups 4. When the user needs to lean on the cane, by pressing the button 6, the fall-proof negative pressure suction cup 5 can be driven to contact the ground, and a negative pressure is formed in the space where the fall-proof negative pressure suction cup 5 contacts the ground through the negative pressure pump 7. At this time, the base 3 and its fixedly connected structure are fixed, and the user can lean on the cane without tipping over, which is convenient for the user to be more labor-saving and safe in the state of standing still for a long time. At the same time, when the user encounters an emergency and causes the center of gravity to be unstable, by pressing the knob 6, the positioning of the cane can also be quickly carried out. At this time, the user can borrow strength from the cane to help him / her restore the stable state, thus reducing the risk of the user falling.

[0025] Embodiment Two:

[0026] The fall-proof negative pressure suction cup 5 is fixedly connected to the inner rod 8. One end of the inner rod 8 away from the fall-proof negative pressure suction cup 5 passes through the outer rod 2 and extends into the inner cavity opened in the armrest 1. A limiting notch groove 9 is opened on the rod body of the inner rod 8 at the armrest 1 end. The limiting notch groove 9 is movably matched with the limiting block 10. One side of the limiting block 10 is also fixedly connected with a limiting spring 11. One end of the limiting spring 11 away from the limiting block 10 abuts against the inner wall of the armrest 1. The limiting spring 11 is used to push the limiting block 10 into the limiting notch groove 9 under the action of no external force. The button 6 is fixedly installed on the side of the limiting block 10 away from the limiting spring 11. By pressing the button 6, the limiting block 10 is pushed to overcome the elastic force of the limiting spring 11 and thus is pushed to disengage from the cooperation with the limiting notch groove 9. After the disengagement, the inner rod 8 moves downward under the influence of its own weight until the fall-proof negative pressure suction cup 5 contacts the ground.

[0027] In this embodiment, the specific mechanism for pushing the fall-proof negative pressure suction cup 5 to perform lifting movement is further disclosed. The inner rod 8 is movably matched with the limiting block 10 through the limiting notch groove 9 opened on itself. The button 6 and the limiting spring 11 are respectively installed on both sides of the limiting block 10. Refer to the attached Figure 4 drawings. The limiting spring 11 pushes the limiting block 10 into the limiting notch groove 9 under the action of no external force. By pressing the button 6, the elastic force of the limiting spring 11 can be overcome to release the limit of the inner rod 8. After the limit of the inner rod 8 is released, it descends under the action of its own weight to push the fall-proof negative pressure suction cup 5 to descend, so as to perform the positioning operation of the cane.

[0028] Embodiment III:

[0029] A starting stop block 12 is also fixedly connected to the inner rod 8, and a negative pressure pump start button 13 is also fixedly installed on the outer rod 2. During the downward movement of the inner rod 8, the starting stop block 12 moves towards the negative pressure pump start button 13 until finally pressing the negative pressure pump start button 13. At this time, the negative pressure pump start button 13 conducts the circuit of the negative pressure pump 7 to control the operation of the negative pressure pump 7.

[0030] In this embodiment, the specific mechanism for driving the negative pressure pump 7 to operate is further disclosed. After the inner rod 8 is released from the limit, it synchronously drives the starting stop block 12 to descend. During the descent of the starting stop block 12, the negative pressure pump start button 13 is pressed to complete the start of the negative pressure pump 7. This method can autonomously operate the negative pressure pump without manual operation.

[0031] Embodiment IV:

[0032] A reset toggle rod 14 is also fixedly installed on the inner rod 8. The reset toggle rod 14 extends outside the outer rod 2 and is fixedly connected to the toggle block 15. By pushing the toggle block 15 upward to move, the inner rod 8 is pushed upward, so that the limit notch groove 9 and the limit block 10 are matched again, and then the anti-fall negative pressure suction cup 5 is pushed into the off-ground limit state again.

[0033] In this embodiment, when the inner rod 8 needs to be in contact with the limit again during the descent, by pushing the toggle block 15 upward to move, the inner rod 8 is pushed upward, and the anti-fall negative pressure suction cup 5 can be pushed into the off-ground limit state again.

[0034] Embodiment V:

[0035] A movable seat 16 is also fixedly sleeved on the inner rod 8. A fixed seat 17 is fixedly installed on the inner wall of the outer rod 2. An action spring 18 is installed between the fixed seat 17 and the movable seat 16. The action spring 18 is used to push the inner rod 8 to move downward after being released from the off-ground limit.

[0036] In this embodiment, the downward movement of the inner rod 8 can be accelerated by the push of the action spring 18, so that the adsorption and fixation process of the anti-fall negative pressure suction cup 5 is faster, which is beneficial to quickly positioning the crutch in an emergency and fully ensuring the safety of the user.

[0037] Embodiment VI:

[0038] A reset push block 19 is also fixedly installed on one side of the limit clamping block 10. The reset push block 19 is movably matched with the negative pressure release button 20. The negative pressure release button 20 is fixedly installed in the inner cavity of the armrest 1. When the reset push block 19 contacts the negative pressure release button 20, the negative pressure pump 7 changes from the suction state to the inflation state. At this time, it is convenient for the anti-fall negative pressure suction cup 5 to be separated from the adsorption state on the ground.

[0039] In this embodiment, considering that after the inner rod 8 descends, the operation of the negative pressure pump 7 causes the anti-fall negative pressure suction cup 5 to tightly adsorb on the ground. At this time, it is not easy to lift the base 3 upward. Therefore, by setting the reset push block 19 to be movably matched with the negative pressure release button 20, after pressing the button 6 to a certain depth, the negative pressure release button 20 can be triggered. At this time, the negative pressure pump 7 inflates the anti-fall negative pressure suction cup 5 to prompt it to separate from the ground. It should be noted that when the reset push block 19 contacts the negative pressure release button 20, the pressing stroke of the button 6 should be greater than the pressing stroke when the limit clamping block 10 disengages from the limit notch groove 9. Thus, when the user presses with a small stroke, the inner rod 8 is released from the limit and descends. When the user presses with a long stroke, the negative pressure pump 7 changes from the suction state to the inflation state, so as to ensure the normal operation of the device.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fall-proof walking stick based on a vacuum sucker, comprising a handrail, an outer rod and a base, characterized in that: The armrest and the base are respectively fixedly connected to both ends of the outer rod. A number of auxiliary suction cups are installed on the base. An anti-fall negative pressure suction cup is also installed on the base axially in a lifting and movable manner. The anti-fall negative pressure suction cup is fixedly limited from the ground in a contracted state. A button for releasing the fixed limit of the anti-fall negative pressure suction cup from the ground is arranged on the armrest. After pressing the button, the anti-fall negative pressure suction cup moves downward and contacts the ground. The anti-fall negative pressure suction cup is communicated with a negative pressure pump in the base. After the anti-fall negative pressure suction cup contacts the ground, the negative pressure pump works so that a negative pressure adsorption state is formed between the anti-fall negative pressure suction cup and the ground, thereby fixing the base and the outer rod and the armrest fixedly connected thereto, preventing the cane from tipping over.

2. The anti-fall cane based on a vacuum sucker according to claim 1, characterized in that: The number of the auxiliary suction cups is four and they are arranged in an annular array along the axis of the base.

3. The anti-fall cane based on a vacuum sucker according to claim 2, characterized in that: The anti-fall negative pressure suction cup is fixedly connected to the inner rod. One end of the inner rod away from the anti-fall negative pressure suction cup passes through the outer rod and extends into the inner cavity opened in the armrest. A limiting notch groove is opened on the rod body of the inner rod at the end located in the armrest. The limiting notch groove is movably matched with a limiting block. One side of the limiting block is also fixedly connected with a limiting spring. One end of the limiting spring away from the limiting block abuts against the inner wall of the armrest. The limiting spring is used to push the limiting block into the limiting notch groove under the action of no external force. The button is fixedly installed on the side of the limiting block away from the limiting spring. By pressing the button, the limiting block is pushed to overcome the elastic force of the limiting spring and thus is pushed to disengage from the cooperation with the limiting notch groove. After the disengagement of the cooperation, the inner rod moves downward under the influence of its own weight until the anti-fall negative pressure suction cup contacts the ground.

4. The anti-fall cane based on a vacuum sucker according to claim 3, characterized in that: A starting stop block is also fixedly connected to the inner rod. A negative pressure pump starting button is also fixedly installed on the outer rod. During the downward movement of the inner rod, the starting stop block moves towards the side of the negative pressure pump starting button until finally pressing the negative pressure pump starting button. At this time, the negative pressure pump starting button conducts the negative pressure pump circuit to control the negative pressure pump to work.

5. The anti-fall cane based on a vacuum suction cup according to claim 4, wherein: A reset toggle rod is also fixedly installed on the inner rod. The reset toggle rod extends outside the outer rod and is fixedly connected to a toggle block. By pushing the toggle block upward to move, the inner rod is pushed upward, so that the limiting notch groove is matched with the limiting block again, and then the anti-fall negative pressure suction cup is pushed into the state of being limited from the ground again.

6. A fall-proof cane based on a vacuum suction cup according to any one of claims 3-5, characterized in that: A movable seat is also fixedly sleeved on the inner rod. A fixed seat is fixedly installed on the inner wall of the outer rod. An action spring is installed between the fixed seat and the movable seat. The action spring is used to push the inner rod to move downward after the limit from the ground is released.

7. The anti-fall cane based on a vacuum sucker according to claim 6, characterized in that: A reset push block is also fixedly installed on the side of the limiting block located on one side of the limiting spring. The reset push block is movably matched with a negative pressure release button. The negative pressure release button is fixedly installed in the inner cavity of the armrest. When the reset push block contacts the negative pressure release button, the negative pressure pump changes from the suction state to the inflation state. At this time, it is convenient for the anti-fall negative pressure suction cup to disengage from the adsorption state with the ground.

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