Walking stick foot

Abstract

The invention discloses a walking stick foot, belongs to the field of walking aids, and particularly relates to a walking stick foot which can increase the contact surface by pressing the ground and can contract and reset when leaving the ground. The defects that an existing single-foot walking stick is unstable in supporting and a four-foot walking stick has the risk of stumbling and falling down are overcome, the contact face between the walking stick and the ground is increased by automatically opening the movable foot when the walking stick presses the ground, the size of the walking stick foot is reduced by automatically folding the movable foot when the walking stick leaves the ground, and therefore the supporting face is increased and the risk of stumbling is reduced. The pure mechanical linkage mechanism is simple in structure and high in stability.

Description

Technical Field

[0001] This invention relates to a cane foot, belonging to the field of walking aids, and in particular to a cane foot that increases the contact area by pressing down on the ground and retracts and returns to its original position after leaving the ground. Background Technology

[0002] Elderly people commonly experience leg weakness due to physiological reasons and require the assistance of canes when getting around. Therefore, the safety value of these canes is crucial. Falls are already the leading cause of accidental injury among the elderly. It is well known that a single-leg cane is unstable and prone to slipping and falling. To address this instability, four-legged canes have been developed on the market, with four wide supporting legs that do indeed solve the instability problem of single-leg canes. However, the large size of these four legs significantly increases the risk of tripping and falling. There is an urgent need for a cane with a large supporting surface that reduces the risk of tripping, addressing the real pain point for elderly people using canes. Summary of the Invention

[0003] To overcome the shortcomings of existing single-leg crutches which are unstable and four-leg crutches which pose a risk of tripping and falling, this invention provides a crutches that use a ground-pressing movable leg to increase the contact area with the ground and an automatic retractable movable leg when off the ground to reduce the size of the crutches' supporting legs, thereby increasing the support area and reducing the risk of tripping.

[0004] The technical solution adopted by this invention to solve its technical problem is: a cane foot, comprising: a base, a lifting column, a transmission rod, and a movable foot. The base has a through hole for the lifting column to pass through and a mounting hole for connecting the cane. The cane foot is characterized by: a support portion fixedly disposed on the base, which serves as a swing support point for the transmission rod; the transmission rod is a rigid bent rod, with its middle portion or one end hinged to the support portion, allowing the transmission rod to swing around the hinge point as a fulcrum; a first end of the transmission rod is movably connected to the upper part of the lifting column; a second end of the transmission rod is movably connected to the movable foot; and the movable foot is movably connected to the base; thereby, the lifting column, transmission rod, and movable foot constitute a linkage mechanism, and the lifting motion of the lifting column is converted into the swinging motion of the movable foot relative to the base through the swinging motion of the transmission rod. To increase the support surface, the linkage mechanism is provided with one, two, three, or several sets. The opening and closing action of the movable foot is driven by the lifting motion of the lifting column. The lifting column is configured to rise under ground pressure and descend under its own weight after releasing the pressure, thereby driving the linkage mechanism. The lifting column is constructed to have a mass sufficient to drive the linkage mechanism to retract and return the extended leg to its original position under its own weight when off the ground. For reliable retraction, the mass of the lifting column needs to be greater than the combined force required to overcome the frictional resistance and the weight of the extended leg during retraction.

[0005] The technical effects of this invention are as follows: When the cane is pressed to the ground and the movable foot is opened, the bottoms of the movable foot, the lifting column, and the base are on the same horizontal plane; when lifted off the ground, the movable foot retracts towards the cane under the action of the lifting column. The working principle of this technical solution is as follows: 1. When the user presses the cane to the ground, the lifting column rises under the pressure of the ground, lifting one end of the transmission rod, which swings to open the movable foot, thereby increasing the support area; 2. When the user lifts the cane off the ground, without the pressure of the ground, the lifting column descends under its own weight, pulling one end of the transmission rod down, thereby causing the movable foot to retract inward, reducing the volume of the support foot and reducing the risk of tripping; 3. The opening and retraction of the movable foot is powered by the lifting column, and the linkage mechanism formed by the lifting column, the transmission rod, and the movable foot is the key to the technical solution of this invention; 4. The support part supports the transmission rod, and the hinge point between the two is the pivot point for the swing of the transmission rod.

[0006] The beneficial effects of this invention are: 1. By opening the movable foot, the contact area with the ground is increased, providing more stable support and solving the problem of insufficient stability of single-leg canes; 2. By retracting the movable foot, the size of the supporting foot is reduced, solving the problem of tripping over the feet of four-legged canes; 3. The purely mechanical linkage mechanism has a simple structure and high stability. Attached Figure Description

[0007] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0008] Figure 1 This is a cross-sectional view of the movable leg of the present invention in the open state;

[0009] Figure 2 This is a cross-sectional view of the movable leg of the present invention in the retracted state;

[0010] Figure 3 This is a cross-sectional view of the structure of the present invention with a column base;

[0011] Figure 4 This is a plan view of the transmission rod of the present invention;

[0012] Figure 5 This is a cross-sectional view of the second embodiment of the present invention (using a cane stick as a support) with the movable leg open;

[0013] Figure 6 This is a cross-sectional view of the base structure of the second embodiment of the present invention (with the columns removed);

[0014] In the diagram: 1. Base, 2. Through hole, 3. Mounting hole, 4. Column, 5. Lifting column, 6. Transmission rod, 7. Movable foot, 8. Cane. Detailed Implementation

[0015] The present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and all other embodiments obtained by any person without creative effort are within the scope of protection of the present invention.

[0016] In this application, unless otherwise expressly defined, the term "connection" used to describe the relationship between movable components such as lifting columns, transmission rods, and movable feet refers to the movable connection method that allows them to swing as required, such as hinges, hinge joints, etc.

[0017] First embodiment:

[0018] To better illustrate this, the following settings are adopted in this embodiment. It is particularly important to note that the settings in this example are not a limitation of the technical solution of this invention. Specifically, two sets of linkage mechanisms are adopted. The support part set on the base 1 is the column 4. The lifting column 5 is constructed to have a mass sufficient to drive the linkage mechanism to retract and reset the movable foot 7 when it is off the ground by its own gravity.

[0019] To achieve reliable resetting, the mass of the lifting column 5 needs to be greater than the combined force required to overcome the frictional resistance and its own weight experienced by the movable foot 7 during resetting. In this art, the mass range can be determined through conventional mechanical calculations or limited, simple experiments. For example, in one embodiment, the lifting column 5 is made of metal and its mass is approximately 1.5 to 3 times that of the movable foot 7, providing reliable resetting power.

[0020] The detailed technical solution is as follows: A cane foot includes: a base 1, a lifting column 5, a transmission rod 6, and a movable foot 7. The base 1 is provided with: a through hole 2, a mounting hole 3, and a column 4, as shown below. Figure 3 As shown; the transmission rod 6 is a rigid, curved structure. The installation method and connection relationship are as follows: the transmission rod 6 is hinged to the column 4 and can swing freely; the column 4 serves as a support, as shown... Figure 1As shown; one end of the transmission rod 6 is hinged to the movable foot 7 and can swing freely; one end of the lifting column 5 passes through the through hole 2 and is hinged to the end of the transmission rod 6 and can move freely; the movable foot 7 is hinged to the base 1 and can move freely; the lifting column 5, transmission rod 6, and movable foot 7 form a linkage mechanism, and the lifting motion of the lifting column 5 can be converted into the swing of the movable foot 7 relative to the base 1 through the swing of the transmission rod 6. The cane 8 is fixedly connected to the cane foot through the mounting hole 3 by screws to form a cane. Force relationship: the lifting column 5, transmission rod 6, and movable foot 7 form a linkage mechanism, and the opening and closing action of the movable foot 7 is driven by the lifting motion of the lifting column 5; the lifting column 5 rises under the pressure of the ground and falls by its own weight after releasing the pressure, thereby driving the linkage mechanism to move. The technical effect of this technical solution is: when the movable foot 7 is opened, the bottoms of the movable foot 7, the lifting column 5, and the base 1 are at the same horizontal plane, as Figure 1 When it leaves the ground, under the action of the lifting column 5, the movable foot 7 retracts towards the cane 8, as... Figure 2 .

[0021] Second embodiment:

[0022] To better illustrate this, the following settings are adopted in this embodiment. It is particularly important to note that the settings in this example are not a limitation of the technical solution of this invention. Specifically, two sets of linkage mechanisms are used. In this embodiment, the cane stick is used as the support part, the column 4 is eliminated, and the lifting column 5 is constructed to have a mass sufficient to drive the linkage mechanism to retract and reset the movable foot 7 when it is off the ground by its own gravity.

[0023] To achieve reliable resetting, the mass of the lifting column 5 needs to be greater than the combined force required to overcome the frictional resistance and its own weight experienced by the movable foot 7 during resetting. In this art, the mass range can be determined through conventional mechanical calculations or limited, simple experiments. For example, in one embodiment, the lifting column 5 is made of metal and its mass is approximately 1.5 to 3 times that of the movable foot 7, providing reliable resetting power.

[0024] The detailed technical solution is as follows: A cane foot includes: a base 1, a lifting column 5, a transmission rod 6, and a movable foot 7. The base 1 is provided with: a through hole 2 and a mounting hole 3, such as... Figure 6As shown, the transmission rod 6 is a rigid, curved structure. The installation method and connection relationship are as follows: the transmission rod 6 is hinged to the cane 8 and can swing freely, with the cane 8 serving as a support; one end of the transmission rod 6 is hinged to the movable foot 7 and can swing freely; one end of the lifting column 5 passes through the through hole 2 and is hinged to one end of the transmission rod 6 and can move freely; the movable foot 7 is hinged to the base 1 and can move freely; the lifting column 5, transmission rod 6, and movable foot 7 form a linkage mechanism, and the lifting motion of the lifting column 5 can be converted into the swinging motion of the movable foot 7 relative to the base 1 through the swinging motion of the transmission rod 6. The lowest end of the cane 8 is fixedly connected to the cane foot through the mounting hole 3 with screws, forming a cane. Figure 5 As shown. Force relationship: The lifting column 5, transmission rod 6, and movable foot 7 form a linkage mechanism. The opening and retraction of the movable foot 7 is driven by the lifting motion of the lifting column 5. The lifting column 5 rises under ground pressure and descends under its own weight after releasing the pressure, thereby driving the linkage mechanism. The technical effect of this solution is: when the movable foot 7 is opened, the bottoms of the movable foot 7, the lifting column 5, and the base 1 are at the same horizontal plane, as... Figure 5 As shown; when it leaves the ground, the movable foot 7 retracts towards the cane 8 under the action of the lifting column 5.

[0025] Instructions for use: 1. When the user presses the cane 8 to the ground, the lifting column 5 rises under the pressure of the ground, lifting one end of the transmission rod 6. The transmission rod 6 swings, thereby opening the movable foot 7, achieving the technical effect of increasing the support area; 2. When the user lifts the cane 8 off the ground, without the pressure of the ground, the lifting column 5 descends under its own weight, pulling one end of the transmission rod 6 down, thereby causing the movable foot 7 to retract inward, reducing the volume of the support foot, and reducing the risk of tripping.

Claims

1. A cane foot, comprising a base (1), a lifting column (5), a transmission rod (6), and a movable foot (7), wherein the base (1) is provided with a through hole (2) for the lifting column (5) to pass through, characterized in that: The cane foot also includes a support portion fixedly mounted on the base (1); The transmission rod (6) is a rigid bent rod, with its middle part or one end hinged to the support part, so that the transmission rod (6) can swing with the hinge point as the fulcrum. The first end of the transmission rod (6) is movably connected to the upper part of the lifting column (5); The second end of the transmission rod (6) is movably connected to the movable foot (7); The movable foot (7) is movably connected to the base (1); This makes the lifting column (5), transmission rod (6) and movable foot (7) form a linkage mechanism, and the lifting movement of the lifting column (5) is converted into the swing of the movable foot (7) relative to the base (1) by the swing of the transmission rod (6).

2. The cane foot according to claim 1, characterized in that: The support is a columnar structure that rises upward from the base (1).

3. The cane foot according to claim 2, characterized in that: The columnar structure is integrally formed with the base (1).

4. The cane foot according to claim 3, characterized in that: The integrally formed column structure is a column (4).

5. The cane foot according to claim 1, characterized in that: The support part is the lower end of the cane's shaft that is fixedly connected to the base (1).

6. A cane foot according to any one of claims 1 to 5, characterized in that: The linkage mechanism is provided in one, two, three or more groups.

7. A cane foot according to any one of claims 1 to 5, characterized in that: The opening and retraction of the movable foot (7) is driven by the lifting and lowering motion of the lifting column (5).

8. A cane foot according to any one of claims 1 to 5, characterized in that: The lifting column (5) is configured to rise by bearing ground pressure and fall by its own weight after releasing the pressure, thereby driving the linkage mechanism to move.

9. A cane foot according to claim 8, characterized in that: The mass of the lifting column (5) is set to be greater than the resultant force of the frictional resistance and its own weight during the resetting process of the movable foot (7).

10. A cane foot according to claim 9, characterized in that: The mass of the lifting column (5) is 1.5 to 3 times the mass of the movable leg (7).

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