Universal shock-absorbing foot pads

Abstract

This invention relates to the field of shock-absorbing foot pads and discloses a universal shock-absorbing foot pad, comprising a foot pad with a cover plate at the top. A first oblique tooth is provided on the outer side wall of the top of the cover plate. An adjusting plate is provided above the cover plate, and a second oblique tooth matching the first oblique tooth is provided on the inner side wall of the bottom of the adjusting plate. The bottom of the universal assembly passes through the adjusting plate and is slidably connected to the arcuate groove in the middle of the cover plate. The universal shock-absorbing foot pad of this invention achieves multi-functional adjustment of the universal assembly through the double-tooth engagement, allowing switching between universal rotation and vertical fixed non-rotation modes to meet the needs of different customers. Through the setting of the first and second elastic elements, the double springs can better limit the rebound direction of the sleeve assembly, preventing the sleeve assembly from shifting during rebound and preventing the sleeve assembly from colliding with the flange, thus reducing wear on the sleeve assembly and flange and increasing service life.

Description

[Technical Field]

[0001] This invention relates to the field of shock-absorbing foot pads, and particularly to omnidirectional shock-absorbing foot pads. [Background Technology]

[0002] Shock-absorbing pads are used at the bottom of the cane to absorb shock and cushion the impact. Existing shock-absorbing pads come in various forms, offering not only shock absorption but also directional adjustment, allowing users to easily use the cane on uneven surfaces. However, these directional adjustable canes are not very effective on smooth surfaces. Often, the force applied by the user causes the cane head to tilt, making it inconvenient to use. Some users still prefer canes that cannot be adjusted. Therefore, how to make the same cane meet the needs of different users is an urgent problem to be solved. Furthermore, existing canes are prone to wear and tear on the sleeve assembly and flange during use, leading to loosening of the sleeve assembly. This often requires replacement of the sleeve assembly after a period of use, increasing operating costs. Loosening of the sleeve assembly can also easily cause safety issues. [Summary of the Invention]

[0003] The present invention aims to solve the above-mentioned problems by providing a universal shock-absorbing foot pad, which solves the problems that existing shock-absorbing foot pads cannot achieve multiple adjustment modes simultaneously and cannot reduce the frictional loss of the sleeve assembly and flange.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] The universal shock-absorbing foot pad includes a foot pad, a cover plate on the top of the foot pad, a first oblique tooth on the outer side wall of the top of the cover plate, an adjustment plate above the cover plate, a second oblique tooth matching the first oblique tooth on the inner side wall of the bottom of the adjustment plate, a first flat tooth in the middle of the adjustment plate, a universal assembly passing through the adjustment plate and slidably connected to the arc groove in the middle of the cover plate, and a second flat tooth matching the first flat tooth on the outer side wall of the universal assembly.

[0006] The top of the universal joint extends outward and is provided with a flange. A sleeve assembly is slidably fitted on the flange. The bottom of the sleeve assembly is provided with an outer liner that slides with the sleeve assembly. A first elastic element is provided between the outer liner and the flange to limit the springback direction of the sleeve assembly. A second elastic element is also provided in the vertical central axis direction of the universal joint and the sleeve assembly to limit the springback direction of the sleeve assembly.

[0007] Preferably, when the first oblique tooth and the second oblique tooth are engaged with each other, and when the first flat tooth and the second flat tooth are engaged with each other, the universal assembly cannot be adjusted for universal rotation.

[0008] Preferably, when the first oblique tooth and the second oblique tooth are separated from each other, and the first flat tooth and the second flat tooth are engaged with each other, the universal assembly can be adjusted by universal rotation.

[0009] Preferably, the distance between the outer wall of the universal joint assembly and the inner wall of the sleeve assembly is the same as the outer diameter of the first elastic element.

[0010] Preferably, the universal assembly further includes a first universal tapered tube, a deformable second universal tapered tube, and a T-bolt. Both the first and second universal tapered tubes are hollow structures. The bottom of the first universal tapered tube passes through the adjusting plate and is slidably connected to the arc groove. The outer side wall of the first universal tapered tube is provided with a second flat tooth. The second universal tapered tube is sleeved in the middle of the first universal tapered tube. The T-bolt is sleeved in the middle of the second universal tapered tube. The bottom of the T-bolt passes through the arc groove and is inserted into the foot pad.

[0011] Preferably, the second universal tapered tube is made of a flexible material. When the T-bolt is pressed against the second universal tapered tube, the second universal tapered tube deforms, allowing the entire universal assembly to be adjusted in all directions.

[0012] Preferably, the top of the second universal tapered tube is provided with a receiving groove, the lower end of the second elastic element is disposed in the receiving groove, and the width of the receiving groove is the same as the outer diameter of the second elastic element.

[0013] Preferably, the sleeve assembly includes an outer tube, an inner tube, and a gasket. The outer tube is slidably sleeved on the flange, the inner tube is sleeved in the middle of the outer tube, the gasket is provided at the bottom of the inner tube, and the upper end of the second elastic member is connected to the bottom of the gasket.

[0014] Preferably, the inner wall of the outer tube has a groove that matches the flange along its length.

[0015] Preferably, the foot pad is made of a flexible material.

[0016] The contribution of this invention lies in the fact that the universal shock-absorbing foot pad of this invention achieves multi-functional adjustment of the universal assembly through double-tooth engagement (namely, the engagement of the first oblique tooth and the second oblique tooth, and the engagement of the first flat tooth and the second flat tooth). It can switch between two modes: universal rotation and vertical fixation without rotation, to meet the needs of different customers. Through the setting of the first elastic element and the second elastic element, the double spring can better limit the rebound direction of the sleeve assembly, so that the sleeve assembly will not shift during the rebound process, and the sleeve assembly will not collide with the flange, thereby reducing the wear of the sleeve assembly and the flange and increasing the service life. [Attached Image Description]

[0017] Figure 1 This is a cross-sectional schematic diagram of the universal shock-absorbing foot pad of the present invention along its axial direction;

[0018] Figure 2 This is a diagram illustrating the effect of the universal shock-absorbing foot pad of the present invention during universal adjustment;

[0019] Figure 3 This is a perspective view of the universal shock-absorbing foot pad of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the universal component of the present invention;

[0021] Figure 5 This is a schematic diagram of the sleeve assembly of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the outer tube and the first universal tapered tube of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the inner tube, the first elastic element, the second elastic element, the gasket, and the first universal tapered tube of the present invention;

[0024] Figure 8 This is a schematic diagram of the structure of the adjusting plate, cover plate and first universal tapered tube of the present invention;

[0025] Figure 9 This is a schematic diagram of the structure of the adjusting plate of the present invention;

[0026] Among them: foot pad 10, cover plate 20, adjusting plate 30, universal assembly 40, flange 50, sleeve assembly 60, outer liner plate 70, first elastic element 80, and second elastic element 90;

[0027] First oblique tooth 21, arc groove 22, second oblique tooth 31, first flat tooth 32, second flat tooth 41, first universal tapered tube 42, second universal tapered tube 43, receiving groove 431, T-bolt 44, outer tube 61, groove 611, inner tube 62, gasket 63.

Detailed Implementation Methods

[0028] The following embodiments are further explanations and supplements to the present invention and do not constitute any limitation on the present invention.

[0029] like Figure 1-9As shown, the universal shock-absorbing foot pad includes a foot pad 10. The foot pad 10 has a cover plate 20 on its top. The outer side wall of the top of the cover plate 20 has a first oblique tooth 21. An adjustment plate 30 is provided above the cover plate 20. The inner side wall of the bottom of the adjustment plate 30 has a second oblique tooth 31 that matches the first oblique tooth 21. The middle part of the adjustment plate 30 has a first flat tooth 32. The bottom of the universal assembly 40 passes through the adjustment plate 30 and is slidably connected to the arc groove 22 in the middle of the cover plate 20. The outer side wall of the universal assembly 40 has a second flat tooth 41 that matches the first flat tooth 32.

[0030] The top of the universal assembly 40 extends outwardly with a flange 50, and a sleeve assembly 60 is slidably sleeved on the flange 50. The bottom of the sleeve assembly 60 is provided with an outer liner 70 that slides with the sleeve assembly 60. A first elastic element 80 for limiting the springback direction of the sleeve assembly 60 is provided between the outer liner 70 and the flange 50. A second elastic element 90 for limiting the springback direction of the sleeve assembly 60 is also provided in the vertical central axis direction of the universal assembly 40 and the sleeve assembly 60.

[0031] The universal shock-absorbing foot pad of the present invention achieves multi-functional adjustment of the universal assembly 40 through double-tooth engagement (the first oblique tooth 21 and the second oblique tooth 31 engage, and the first flat tooth 32 and the second flat tooth 41 engage), which can switch between two modes: universal rotation and vertical fixation without rotation, to meet the needs of different customers. Through the setting of the first elastic element 80 and the second elastic element 90, the double spring can better limit the rebound direction of the sleeve assembly 60, so that the sleeve assembly 60 will not shift during the rebound process, and the sleeve assembly 60 will not collide with the flange 50, which can reduce the wear of the sleeve assembly 60 and the flange 50 and increase the service life.

[0032] Specifically, such as Figure 1 , 8 As shown in Figure 9, a first oblique tooth 21 is obliquely arranged on the top outer wall of the cover plate 20. An adjusting plate 30 is arranged above the cover plate 20. A second oblique tooth 31 matching the first oblique tooth 21 is arranged on the bottom inner wall of the adjusting plate 30. The first oblique tooth 21 and the second oblique tooth 31 cooperate with each other, so that the adjusting plate 30 and the cover plate 20 are connected without loosening. A first flat tooth 32 is arranged in the middle of the adjusting plate 30. The first flat tooth 32 cooperates with the second flat tooth 41 on the outer wall of the universal assembly 40, so that the adjusting plate 30 and the universal assembly 40 are connected. Different combinations of the double tooth structure (the first oblique tooth 21 and the second oblique tooth 31 cooperate as a group, and the first flat tooth 32 and the second flat tooth 41 cooperate as a group) can realize different modes of the universal assembly 40 (vertical fixed mode and universal adjustment mode).

[0033] Specifically, when the first oblique tooth 21 and the second oblique tooth 31 are engaged, and the first flat tooth 32 and the second flat tooth 41 are engaged, the bottom of the adjusting plate 30 is fixedly connected to the cover plate 20, and the middle part of the adjusting plate 30 is fixedly connected to the universal assembly 40. No matter how the user squeezes the cane from above, the universal assembly 40 cannot slide along the surface of the arc groove 22 and cannot achieve universal adjustment. When the adjusting plate 30 is rotated upward, the first oblique tooth 21 and the second oblique tooth 31 are separated, and only the first flat tooth 32 and the second flat tooth 41 are engaged. At this time, since the adjusting plate 30 and the cover plate 20 are not connected together, the bottom of the universal assembly 40 is not restricted by the cover plate 20, and the universal assembly 40 can perform universal adjustment (the specific universal adjustment principle will be described later).

[0034] The functions of the first elastic element 80 and the second elastic element 90 are both to restrict the direction of the sleeve assembly 60 during springback, so that the sleeve assembly 60 can spring back vertically, minimize the friction between the inner wall of the sleeve assembly 60 and the flange 50, and reduce wear. Specifically, the first elastic element 80 is disposed between the flange 50 and the outer liner 70, and the second elastic element 90 is disposed in the vertical central axis direction of the universal assembly 40 and the sleeve assembly 60. When the user presses the cane, the sleeve assembly 60 moves downward along the flange 50. At this time, the second elastic element 90 is first squeezed by the sleeve assembly 60. As the sleeve assembly 60 continues to move downward, the first elastic element 80 is stretched and is in a stretched state. When the user stops pressing the cane, the sleeve assembly 60 will rebound upward under the reaction force of the second elastic element 90. During the rebound process, the sleeve assembly 60 will move upward along the flange 50. During the upward movement, if the first elastic element 80 is not set to limit the rebound direction of the sleeve assembly 60, the flange 50 is very likely to collide with the inner wall of the sleeve assembly 60, causing wear on the sleeve assembly 60 and the flange 50, resulting in loosening between the outer tube 61 and the inner tube 62 in the sleeve assembly 60.

[0035] To further explain, such as Figure 1 As shown, the distance between the outer wall of the universal assembly 40 and the inner wall of the sleeve assembly 60 is the same as the outer diameter of the first elastic element 80.

[0036] In this embodiment, by setting the distance between the outer wall of the universal assembly 40 and the inner wall of the sleeve assembly 60 to be the same as the outer diameter of the first elastic member 80, the first elastic member 80 can only be stretched and rebounded in the vertical direction, and the force it applies to the sleeve assembly 60 is also in the vertical direction, so that the sleeve assembly 60 can maintain a non-displaced state as much as possible during the rebound process, thereby reducing the frictional loss between the inner wall of the sleeve assembly 60 and the flange 50.

[0037] Furthermore, the universal assembly 40 also includes a first universal tapered tube 42, a deformable second universal tapered tube 43, and a T-bolt 44. Both the first universal tapered tube 42 and the second universal tapered tube 43 are hollow structures. The bottom of the first universal tapered tube 42 passes through the adjusting plate 30 and is slidably connected to the arc groove 22. The outer side wall of the first universal tapered tube 42 is provided with a second flat tooth 41. The second universal tapered tube 43 is sleeved in the middle of the first universal tapered tube 42. The T-bolt 44 is sleeved in the middle of the second universal tapered tube 43. The bottom of the T-bolt 44 passes through the arc groove 22 and is inserted into the foot pad 10.

[0038] The first universal tapered tube 42, the second universal tapered tube 43, and the T-bolt 44 constitute the universal joint assembly 40. The working principle of the universal adjustment mode of the universal joint assembly 40 is as follows: Figure 1-2 As shown, after the first helical tooth 21 and the second helical tooth 31 separate, only the first flat tooth 32 and the second flat tooth 41 engage with each other, and the universal assembly 40 enters the universal adjustment mode. For example, when the user applies a rightward force to the cane, the T-bolt 44 will press against the second universal tapered tube 43, causing deformation on the right side of the second universal tapered tube 43. At this time, the bottom (smooth) of the first universal tapered tube 42 slides and tilts between itself and the arc-shaped groove 22, thus causing the first universal tapered tube 42 and the second universal tapered tube 43 to be in a rightward adjustment state (T-bolt 44). The top of the T-bolt 44 is consistent with the hollow inner diameter of the inner tube 62, but the diameter of the columnar part of the T-bolt 44 is smaller than the hollow inner diameter of the inner tube 62. This causes the T-bolt 44 to deform when it presses the right side of the second universal tapered tube 43. At the same time, the bottom of the first universal tapered tube 42, the second universal tapered tube 43 and the T-bolt 44 can swing towards the gap between the hollow inner diameter of the inner tube 62 and the columnar part of the T-bolt 44, thereby achieving directional adjustment. Similarly, the user can test the pressure in a 360° direction, thereby causing the universal assembly 40 to rotate in different directions and achieve universal adjustment.

[0039] To further explain, the second universal tapered tube 43 is made of a flexible material. When the T-bolt 44 is pressed against the second universal tapered tube 43, the second universal tapered tube 43 deforms, allowing the entire universal assembly 40 to be adjusted in all directions.

[0040] The second universal tapered tube 43 is made of a flexible material and has a certain degree of elasticity. Preferably, it can be made of rubber. The flexible material ensures that the second universal tapered tube 43 can deform when it is squeezed by the T-bolt 44, thereby realizing universal adjustment.

[0041] To further explain, such as Figure 1As shown, the top of the second universal tapered tube 43 is provided with a receiving groove 431, the lower end of the second elastic member 90 is provided in the receiving groove 431, and the groove width of the receiving groove 431 is the same as the outer diameter of the second elastic member 90.

[0042] In this embodiment, by setting the groove width of the receiving groove 431 to be the same as the outer diameter of the second elastic member 90, the deformation direction of the second elastic member 90 is restricted, so that the lower end of the second elastic member 90 can only be compressed and rebounded in the vertical direction, thereby further restricting the rebound direction of the sleeve assembly 60.

[0043] To further explain, the sleeve assembly 60 includes an outer tube 61, an inner tube 62, and a gasket 63. The outer tube 61 is slidably sleeved on the flange 50. The inner tube 62 is sleeved in the middle of the outer tube 61. The gasket 63 is provided at the bottom of the inner tube 62. The upper end of the second elastic member 90 is connected to the bottom of the gasket 63.

[0044] The sleeve assembly 60 can be connected to the cane above to transmit the force from the user. The sleeve assembly 60 includes an outer tube 61, an inner tube 62 and a washer 63. The outer tube 61 can slide along the flange 50. The inner tube 62 is directly connected to the main shaft of the cane. A washer 63 is provided at the bottom of the inner tube 62. The top of the washer 63 contacts the main shaft of the cane and the bottom of the washer 63 contacts the upper end of the second elastic member 90, so that the pressure from the cane can be transmitted to the second elastic member 90.

[0045] To further explain, such as Figure 6 As shown, the inner wall of the outer tube 61 is provided with a groove 611 that matches the flange 50 along its length.

[0046] The groove 611 matches the flange 50. The sleeve assembly 60 moves up and down by sliding through the groove 611 across the flange 50 during downward or upward movement.

[0047] To further explain, the foot pad 10 is made of a flexible material.

[0048] The foot pad 10 is preferably made of rubber, which can relieve most of the pressure from the cane and act as a cushion.

[0049] Although the present invention has been disclosed through the above embodiments, the scope of protection of the present invention is not limited thereto. Any modifications or substitutions made to the above components without departing from the concept of the present invention shall fall within the scope of the claims of the present invention.

Claims

1. A universal shock-absorbing foot pad, comprising a foot pad, characterized in that: The foot pad is topped with a cover plate. A first oblique tooth is provided on the outer side wall of the top of the cover plate. An adjusting plate is located above the cover plate. A second oblique tooth, matching the first oblique tooth, is provided on the inner side wall of the bottom of the adjusting plate. A first flat tooth is provided in the middle of the adjusting plate. The bottom of the universal joint passes through the adjusting plate and is slidably connected to the arcuate groove in the middle of the cover plate. A second flat tooth, matching the first flat tooth, is provided on the outer side wall of the universal joint. When the first oblique tooth and the second oblique tooth are engaged, and when the first flat tooth and the second flat tooth are engaged, the universal joint cannot be adjusted in all directions. When the first oblique tooth and the second oblique tooth are separated, and when the first flat tooth and the second flat tooth are engaged, the universal joint can be adjusted in all directions. The top of the universal assembly extends outward and is provided with a flange. A sleeve assembly is slidably sleeved on the flange. The bottom of the sleeve assembly is provided with an outer liner that slides with the sleeve assembly. A first elastic element is provided between the outer liner and the flange to limit the springback direction of the sleeve assembly. A second elastic element is also provided in the vertical central axis direction of the universal assembly and the sleeve assembly to limit the springback direction of the sleeve assembly. The universal assembly further includes a first universal tapered tube, a deformable second universal tapered tube, and a T-bolt. Both the first and second universal tapered tubes are hollow structures. The bottom of the first universal tapered tube passes through the adjusting plate and is slidably connected to the arc groove. The outer wall of the first universal tapered tube is provided with a second flat tooth. The second universal tapered tube is sleeved in the middle of the first universal tapered tube, and the T-bolt is sleeved in the middle of the second universal tapered tube. The bottom of the T-bolt passes through the arc groove and is inserted into the foot pad. The second universal tapered tube is made of a flexible material. When the T-bolt is pressed against the second universal tapered tube, the second universal tapered tube deforms, allowing the entire universal assembly to be adjusted in all directions.

2. The universal shock-absorbing foot pad according to claim 1, characterized in that: The distance between the outer wall of the universal joint assembly and the inner wall of the sleeve assembly is the same as the outer diameter of the first elastic element.

3. The universal shock-absorbing foot pad according to claim 1, characterized in that: The top of the second universal tapered tube is provided with a receiving groove, the lower end of the second elastic element is provided in the receiving groove, and the width of the receiving groove is the same as the outer diameter of the second elastic element.

4. The universal shock-absorbing foot pad according to claim 1, characterized in that: The sleeve assembly includes an outer tube, an inner tube, and a gasket. The outer tube is slidably sleeved on the flange, the inner tube is sleeved in the middle of the outer tube, the gasket is provided at the bottom of the inner tube, and the upper end of the second elastic element is connected to the bottom of the gasket.

5. The universal shock-absorbing foot pad according to claim 4, characterized in that: The inner wall of the outer tube has a groove that matches the flange along its length.

6. The universal shock-absorbing foot pad according to claim 1, characterized in that: The foot pads are made of a flexible material.

Images