Stepless telescopic walking stick

Abstract

The utility model relates to the technical field of telescopic crutches, and particularly discloses a stepless telescopic crutch which comprises a telescopic pipe rod. An internal expansion sleeve; a supporting tube rod; and an adjusting rod. The telescopic pipe rod is arranged in the supporting pipe rod in a penetrating mode, a limiting column is arranged in the telescopic pipe rod, the adjusting rod piece is arranged in the limiting column in a penetrating mode, an upper limiting piece and a lower limiting piece are arranged outside the adjusting rod piece, the outer portion of the upper limiting piece abuts against the bottom of the limiting column, and a lower pressing plate piece is movably arranged outside the adjusting rod piece. The outer portion of the lower limiting piece abuts against one face of the lower pressing plate piece, the outer portion of the inner expansion sleeve piece abuts against the inner wall of the supporting pipe rod, the end, close to the supporting pipe rod, of the adjusting rod piece is sleeved with a conical sleeve column, one end of the conical sleeve column is aligned with the inner expansion sleeve piece, and the other face of the lower pressing plate piece faces the other end of the conical sleeve column. The telescopic length of the walking stick is effectively adjusted in a stepless mode, and the beneficial effects that the supporting stress performance is improved, and use is convenient are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of telescopic crutch, in particular to a stepless telescopic crutch. Background Art

[0002] A cane is a walking aid. Among them, crutches are divided into walking sticks, elbow canes and axillary canes. Canes are mainly used for mild needs and are suitable for most people with limited mobility.

[0003] The existing crutches are suitable for people with different arm lengths, and thus the crutches need to be telescopic to adjust the length of the crutches. However, the existing telescopic crutches are mainly composed of an inner tube rod and an outer tube rod, and the inner tube rod is inserted into the inner tube rod. The inner tube rod and the outer tube rod are mainly adjusted by a clamping connection during the telescopic process. When adjusting, the inner tube rod needs to be pulled so that the clamping part of the inner tube rod is aligned with the clamping hole part of the outer tube rod and connected to achieve a clamping effect. During the adjustment process, the clamping part needs to be pressed to fall off from the clamping hole part. After the clamping part and the clamping hole part are separated, the inner tube rod needs to be pulled to adjust the length. However, the conventional clamping part The connection structure with the clamping hole part is mainly a jumping adjustment method. The jumping adjustment method is that multiple clamping holes are distributed on the outer tube at a certain interval, and the clamping part extends out and clamps after corresponding to a single clamping hole. Since multiple clamping holes are distributed according to the required adjustment distance, the clamping part needs to be aligned with the hole position for adjusting the length for clamping to achieve the required adjustment spacing during adjustment. However, the adjustment method is easily restricted by the hole position adjustment, and the length cannot be adjusted at will. Moreover, since the handle is mostly located on the top of the inner tube rod, long-term use of pressing down the inner tube rod can easily cause the clamping part to be damaged or deformed by excessive force, which will not only cause the extension and retraction to be stuck, but also affect the use.

[0004] The reference patent publication number is "CN220001029U", and the patent name is "Telescopic mechanism and telescopic crutch". The technical solution discloses "a telescopic mechanism and a telescopic crutch, wherein the telescopic mechanism includes a first pipe, a second pipe and an unlocking piece, the second pipe can be slidably inserted at one end of the first pipe, at least one set of locking structures is arranged between the first pipe and the second pipe, each set of locking structures includes a first clamping hole and an elastic top bead, one of the first clamping hole and the elastic top bead is arranged on the first pipe, and the other is arranged on the second pipe; the unlocking piece can be movably installed on one end of the first pipe The outer wall of the utility model has a first position and a second position and can be switched between the first position and the second position; the clamping portion of the elastic top bead can be inserted into the first clamping hole and lock the second tube to the first tube, and when the unlocking member is switched from the first position to the second position, the unlocking member can make the clamping portion of the elastic top bead in the first clamping hole disengage from the first clamping hole. The telescopic mechanism provided by the utility model can make the crutch more convenient to retract. Although the crutch can be effectively telescoped and adjusted in length by the elastic top bead and the first clamping hole, this technical solution cannot solve the technical problem of bending of the clamping part under force.

[0005] Therefore, how to achieve stepless adjustment and expansion is the main technical problem that technicians need to solve at present. Utility Model Content

[0006] The purpose of the utility model is to provide a stepless telescopic crutch to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A stepless telescopic crutch, comprising:

[0009] Telescopic rod; internal expansion kit; support rod; and adjusting rod;

[0010] The telescopic tube rod is inserted into the interior of the supporting tube rod, a limiting column is arranged inside the telescopic tube rod, the adjusting rod is inserted into the interior of the limiting column, an upper limit piece and a lower limit piece are arranged outside the adjusting rod, the outer portion of the upper limit piece abuts against the bottom of the limiting column, a lower pressing plate is movably arranged outside the adjusting rod, and the outer portion of the lower limit piece abuts against one side of the lower pressing plate;

[0011] The outside of the internal expansion sleeve is in contact with the inner wall of the supporting tube rod, and a conical sleeve column is sleeved on one end of the adjusting rod close to the supporting tube rod, one end of the conical sleeve column is aligned with the internal expansion sleeve, and the other surface of the pressing plate faces the other end of the conical sleeve column, a return spring is arranged between the pressing plate and the conical sleeve column, a supporting bottom block is fixedly arranged on the end of the adjusting rod, and the bottom of the internal expansion sleeve is in contact with the outside of the supporting bottom block, and the starting end of the adjusting rod extends to the outside of the telescopic tube rod.

[0012] Preferably, one end surface of the conical sleeve column close to the internal expansion sleeve is a conical surface, and the other end of the conical sleeve column is connected to one end of the return spring, and the other end of the return spring is connected to the pressing plate.

[0013] Preferably, the internal expansion kit includes a plurality of limiting slices and a fixed ring plate, the end of the adjusting rod is inserted into the interior of the fixed ring plate, the supporting bottom block abuts against one side of the fixed ring plate, and a plurality of the limiting slices are distributed in a ring shape on the other side of the fixed ring plate, the other side of the fixed ring plate is aligned with the conical sleeve column, when one end of the conical sleeve column is located inside the internal expansion kit, one end face of the conical sleeve column abuts against the inner walls of a plurality of the limiting slices, and an installation groove is provided on the outside of the internal expansion kit, and a limiting collar is provided inside the installation groove.

[0014] Preferably, abutment portions are provided on the outside of several of the limiting segments. When one end of the conical sleeve is located inside the internal expansion sleeve, the outside of the abutment portion abuts against the inner wall of the support tube rod, and the inner sides of the bottoms of several of the limiting segments abut against the adjusting rod.

[0015] Preferably, the central axis of the telescopic tube rod and the central axis of the supporting tube rod are both located on the same central axis.

[0016] Preferably, an armrest handle is provided at the top of the telescopic tube rod, and a mounting through hole is opened at the bottom of the armrest handle. The mounting through hole is sleeved on the top of the telescopic tube rod, and an adjusting button cap is sleeved at the starting end of the adjusting rod, and the adjusting button cap is located outside the mounting through hole.

[0017] Preferably, a supporting foot plate is provided at the bottom of the supporting tube rod, a mounting bayonet is provided at the top of the supporting foot plate, the mounting bayonet is matched with the bottom of the supporting tube rod, and anti-slip grooves are provided at the bottom of the supporting foot plate.

[0018] Compared with the prior art, the technical scheme provides a stepless telescopic crutch: by providing a telescopic tube rod; an internal expansion kit; a support tube rod; and an adjusting rod; the telescopic tube rod is inserted into the interior of the support tube rod, so that the length of the telescopic tube rod inside the support tube rod can be adjusted to extend or shorten the length of the crutch; by providing a limiting column inside the telescopic tube rod, the adjusting rod is inserted into the interior of the limiting column; by abutting the outer side of the internal expansion kit against the inner wall of the support tube rod, and by sleeved with a conical sleeve column at one end of the adjusting rod close to the support tube rod, one end of the conical sleeve column is aligned with the internal expansion kit; by respectively providing an upper limit plate and a lower limit plate on the outside of the adjusting rod, the outer side of the upper limit plate is abutted against the bottom of the limit column; by movably providing a lower pressure plate on the outside of the adjusting rod, the outer side of the lower limit plate is abutted against one side of the lower pressure plate, the other side of the lower pressure plate faces the other end of the conical sleeve column, and a When the adjusting rod is lifted up, the cone sleeve is disengaged from the inner expansion sleeve, thereby making the cone sleeve disengaged from the inner expansion sleeve and making the cone sleeve movable in the inner expansion sleeve for adjusting the length of the telescopic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model from another viewing angle.

[0022] Figure 3 It is a schematic diagram of the structure of the adjusting rod and the internal expansion kit in the utility model.

[0023] Figure 4 It is a structural schematic diagram of the internal expansion kit in the utility model.

[0024] Figure 5 It is a schematic diagram of the conical sleeve column structure in the utility model.

[0025] As shown in the figure: 1. Telescopic tube; 2. Support tube; 3. Internal expansion kit; 4. Adjusting rod; 5. Conical sleeve; 6. Return spring; 10. Limiting column; 11. Handlebar; 21. Support foot; 22. Mounting bayonet; 31. Limiting piece; 32. Fixed ring plate; 33. Mounting groove; 34. Limiting collar; 41. Upper limiting piece; 42. Lower limiting piece; 43. Lower pressure plate; 44. Support bottom block; 45. Adjusting button cap; 111. Mounting through hole; 311. Abutment portion. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. All other embodiments obtained by ordinary personnel in this field without making creative work belong to the protection scope of the utility model. The preferred implementation of the utility model will be described in more detail below with reference to the drawings. Although the preferred implementation of the utility model is shown in the drawings, it should be understood that the utility model can be implemented in various forms and should not be limited by the implementation described here. On the contrary, these implementations are provided to make the utility model more thorough and complete, and to fully convey the scope of the utility model to those skilled in the art.

[0027] The terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The singular forms "a", "the" and "the" used in the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] In the description of the present invention, it should be understood that the terms "thickness", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various components in the present invention, this information should not be limited to these terms. These terms are only used to distinguish components of the same type from each other. For example, without departing from the scope of the present invention, the first component may also be referred to as the second component, and similarly, the second component may also be referred to as the first component. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0032] The technical solution of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0033] refer to Figures 1 to 5 , a stepless telescopic crutch, comprising:

[0034] Telescopic tube rod 1; internal expansion kit 3; support tube rod 2; and adjustment rod 4; the telescopic tube rod 1 is inserted into the support tube rod 2, a limiting column 10 is arranged inside the telescopic tube rod 1, the adjustment rod 4 is inserted into the limiting column 10, and an upper limit piece 41 and a lower limit piece 42 are respectively arranged on the outside of the adjustment rod 4, the outer part of the upper limit piece 41 abuts against the bottom of the limiting column 10, and a lower pressure plate 43 is movably arranged on the outside of the adjustment rod 4, and the outer part of the lower limit piece 42 abuts against one side of the lower pressure plate 43;

[0035] The outside of the internal expansion sleeve 3 abuts against the inner wall of the supporting tube rod 2, and a conical sleeve column 5 is sleeved on one end of the adjusting rod 4 close to the supporting tube rod 2, one end of the conical sleeve column 5 is aligned with the internal expansion sleeve 3, and the other side of the lower pressure plate 43 faces the other end of the conical sleeve column 5, a return spring 6 is arranged between the lower pressure plate 43 and the conical sleeve column 5, a supporting bottom block 44 is fixedly arranged at the end of the adjusting rod 4, and the bottom of the internal expansion sleeve 3 abuts against the outside of the supporting bottom block 44, and the starting end of the adjusting rod 4 extends to the outside of the telescopic tube rod 1.

[0036] Specifically, one end surface of the conical sleeve 5 close to the internal expansion sleeve 3 is a conical surface, and the other end of the conical sleeve 5 is connected to one end of the return spring 6, and the other end of the return spring 6 is connected to the pressing plate 43.

[0037] Specifically, the internal expansion kit 3 includes a plurality of limiting slices 31 and a fixed ring plate 32, the end of the adjusting rod 4 is inserted into the interior of the fixed ring plate 32, the supporting bottom block 44 abuts against one side of the fixed ring plate 32, and a plurality of the limiting slices 31 are distributed in a ring shape on the other side of the fixed ring plate 32, the other side of the fixed ring plate 32 is aligned with the conical sleeve 5, when one end of the conical sleeve 5 is located inside the internal expansion kit 3, one end face of the conical sleeve 5 abuts against the inner walls of the plurality of limiting slices 31, and an installation groove 33 is provided on the outside of the internal expansion kit 3, and a limiting sleeve ring 34 is provided inside the installation groove 33.

[0038] Specifically, abutment portions 311 are provided on the outside of several of the limiting segments 31. When one end of the conical sleeve 5 is located inside the internal expansion sleeve 3, the outside of the abutment portion 311 abuts against the inner wall of the supporting tube rod 2, and the inner sides of the bottoms of several of the limiting segments 31 abut against the adjusting rod 4.

[0039] Specifically, the central axis of the telescopic rod 1 and the central axis of the supporting rod 2 are both located on the same central axis.

[0040] Specifically, an armrest handle 11 is provided at the top of the telescopic tube rod 1, and a mounting through hole 111 is opened at the bottom of the armrest handle 11. The mounting through hole 111 is sleeved on the top of the telescopic tube rod 1, and an adjusting button cap 45 is sleeved at the starting end of the adjusting rod 4, and the adjusting button cap 45 is located outside the mounting through hole 111.

[0041] Specifically, a supporting foot plate 21 is provided at the bottom of the supporting tube rod 2, a mounting bayonet 22 is provided at the top of the supporting foot plate 21, the mounting bayonet 22 is adapted to the bottom of the supporting tube rod 2, and anti-slip grooves are provided at the bottom of the supporting foot plate 21.

[0042] Embodiment 1

[0043] In order to adjust the crutch to a certain length, the telescopic tube 1 is fixed inside the supporting tube 2. In this embodiment, the telescopic tube 1, the internal expansion sleeve 3, the supporting tube 2, and the adjusting rod 4 are provided. The telescopic tube 1 is inserted into the supporting tube 2, so the length of the crutch can be adjusted by adjusting the distance between the telescopic tube 1 and the supporting tube 2. A limiting column 10 is provided inside the telescopic tube 1, and the adjusting rod 4 is inserted into the limiting column 10 to movably place the adjusting rod 4 inside the telescopic tube 1. The outer part of the internal expansion sleeve 3 is brought into contact with the inner wall of the supporting tube 2, so that the end of the adjusting rod 4 close to the supporting tube 2 is sleeved. The conical sleeve 5 aligns one end of the conical sleeve 5 with the internal expansion sleeve 3 so that the other side of the lower pressure plate 43 faces the other end of the conical sleeve 5. Therefore, when the lower pressure plate 43 drives the conical sleeve 5 to enter the interior of the internal expansion sleeve 3, the exterior of the internal expansion sleeve 3 is completely expanded outward and pressed against the inner wall of the supporting pipe rod 2, thereby achieving a limiting effect. A return spring 6 is also provided between the lower pressure plate 43 and the conical sleeve 5. The return spring 6 can ensure that when the lower pressure plate 43 rises, the conical sleeve 5 is driven to partially separate from the interior of the internal expansion sleeve 3, so that the exterior of the internal expansion sleeve 3 is not completely pressed against the inner wall of the supporting pipe rod 2, thereby facilitating the movement of the telescopic pipe rod 1 inside the supporting pipe rod 2 to achieve the function of adjusting the length of the crutch.

[0044] It should be noted that in order to realize the action of driving the pressing plate 43 to press down when the adjusting rod 4 is pressed down, an upper limit plate 41 and a lower limit plate 42 are respectively provided on the outside of the adjusting rod 4, and the outer part of the upper limit plate 41 is abutted against the bottom of the limit column 10, so that when the adjusting rod 4 is pulled up, the limit column 10 plays a limiting role to prevent the adjusting rod 4 from being completely pulled out to the outside of the telescopic tube rod 1, and the pressing plate 43 is movably arranged on the outside of the adjusting rod 4, so that the outer part of the lower limit plate 42 is abutted against one side of the pressing plate 43, thereby realizing that when the adjusting rod 4 is pressed down, the lower limit plate 42 drives the pressing plate 43 to move, and the pressing plate 43 drives the conical sleeve 5 to be completely pressed into the interior of the internal expansion sleeve 3.

[0045] It should also be noted that, by fixing a supporting bottom block 44 at the end of the adjusting rod 4, the bottom of the internal expansion sleeve 3 is abutted against the outside of the supporting bottom block 44, and the bottom of the internal expansion sleeve 3 is supported by the supporting bottom block 44, thereby preventing the internal expansion sleeve 3 from falling off due to force when the conical sleeve 5 is pressed into the internal expansion sleeve 3, and allowing the starting end of the adjusting rod 4 to extend to the outside of the telescopic tube 1, so that the user can pull or press down the starting end of the adjusting rod 4 to control the loosening or locking adjustment.

[0046] It is particularly noted that in order to ensure that the expansion sleeve 3 can be expanded outward when the conical column is pressed into the expansion sleeve 3, in this embodiment, the end surface of the conical sleeve 5 close to the expansion sleeve 3 is a conical surface, the other end of the conical sleeve 5 is connected to one end of the return spring 6, and the other end of the return spring 6 is connected to the pressing plate 43. When the pressing plate 43 drives the conical sleeve 5 to approach the expansion sleeve 3, the conical surface of the conical sleeve 5 gradually enters the interior of the expansion sleeve 3. During this process, the expansion sleeve 3 slowly expands outward, and the outside of the expansion sleeve 3 gradually presses against the inner wall of the supporting pipe rod 2 until the conical surface of the conical sleeve 5 completely enters the interior of the expansion sleeve 3, that is, the outside of the expansion sleeve 3 completely presses against the inner wall of the supporting pipe rod 2.

[0047] It should also be noted that in order to prevent the position of the adjusting rod 4 from being offset when the adjusting rod 4 is pressed down and causing jamming due to the fact that the telescopic tube rod 1 and the supporting tube rod 2 are not on the same central axis, the central axis of the telescopic tube rod 1 and the central axis of the supporting tube rod 2 can be located on the same central axis, thereby ensuring that no jamming occurs during telescoping.

[0048] It should be noted that, in order to facilitate holding the telescopic tube rod 1 and daily use, an armrest handle 11 is provided at the top of the telescopic tube rod 1, and a mounting through hole 111 is opened at the bottom of the armrest handle 11, so that the mounting through hole 111 is sleeved on the top of the telescopic tube rod 1, so as to facilitate the installation of the armrest handle 11 on the top of the telescopic tube rod 1, which is convenient for disassembly or installation, and an adjusting button cap 45 is sleeved on the starting end of the adjusting rod 4, and the adjusting button cap 45 is located outside the mounting through hole 111, so that it is convenient for the user to press or pull the adjusting button cap 45 in daily life, and the adjusting rod 4 is driven by the adjusting button cap 45 to achieve the function of adjusting the extension or fixation, which is convenient for daily use.

[0049] It should also be noted that, by providing a supporting foot plate 21 at the bottom of the supporting tube rod 2, and by providing a mounting socket 22 at the top of the supporting foot plate 21, the mounting socket 22 is adapted to the bottom of the supporting tube rod 2, and by providing anti-slip grooves at the bottom of the supporting foot plate 21, the supporting foot plate 21 can be easily installed at the bottom of the supporting tube rod 2 through the mounting socket 22, and the supporting foot plate 21 is effectively ensured to ensure a stable support when the user uses crutches, and by providing anti-slip grooves at the bottom of the supporting tube rod 2, the user can be further prevented from falling due to the smaller force-bearing area at the bottom of the crutch.

[0050] Embodiment 2

[0051] In order to ensure uniform force when the internal expansion kit 3 expands outward and achieve force stability, in this embodiment: the internal expansion kit 3 includes a plurality of limiting slices 31 and a fixed ring plate 32, the end of the adjusting rod 4 is inserted into the interior of the fixed ring plate 32, so that the supporting bottom block 44 abuts against one side of the fixed ring plate 32, and the plurality of limiting slices 31 are distributed in an annular shape on the other side of the fixed ring plate 32, and are also aligned with the conical sleeve column 5 through the other side of the fixed ring plate 32, so that when one end of the conical sleeve column 5 is located inside the internal expansion kit 3, the conical end face of the conical sleeve column 5 abuts against the inner wall of the plurality of limiting slices 31, and the plurality of limiting slices 31 expand outward at the same time and press against the inner wall of the supporting pipe rod 2, and the plurality of limiting slices 31 expand outward in all directions to achieve the effect of uniform force, and when the plurality of limiting slices press against the inner wall of the supporting pipe rod 2 respectively, the acceptance stability can be ensured.

[0052] It should be noted that in order to prevent the limiting segment 31 from expanding too much and causing a jam that makes it difficult to reset, a mounting groove 33 can be provided on the outside of the internal expansion kit 3, and a limiting ring 34 can be provided inside the mounting groove 33. The limiting ring 34 can limit the expansion distance of the limiting segment 31 to prevent the limiting segment 31 from expanding too much and causing a jam that makes it difficult to reset.

[0053] The locking cam 314 is preferably used to lock the locking cam 316 with the spring 322 at the rear of the locking cam 316, so that the at least one locking cam 314 can be locked to the locking cam 316 at the rear of the locking cam 316.

[0054] It should also be noted that in order to ensure stable contact force, prevent the surface of the limiting segment from being insufficiently in contact with the inner wall of the supporting tube rod, and prevent the adjusting rod from loosening, abutment portions can be provided on the outside of several limiting segments, and then when one end of the conical sleeve is located inside the internal expansion sleeve, the outside of the abutment portion abuts against the inner wall of the supporting tube rod, wherein the abutment portion can be provided with anti-slip grooves, and then the force bearing capacity can be improved by the abutment portion, ensuring that the surface of the limiting segment is in stable contact with the inner wall of the supporting tube rod, and when the conical sleeve is inserted into the internal expansion sleeve and causes several limiting segments to expand outward, the bottom inner sides of several limiting segments gradually approach the adjusting rod until they completely abut against the adjusting rod, and the adjusting rod can be clamped and fixed by the bottom inner sides of several limiting segments, effectively preventing the adjusting rod from loosening.

[0055] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the structure in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0056] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A stepless telescopic crutch, characterized in that: include: Telescopic rod; internal expansion kit; Support pipe rod; and adjusting rods; The telescopic tube rod is passed through the interior of the supporting tube rod, a limiting column is arranged inside the telescopic tube rod, the adjusting rod is passed through the interior of the limiting column, an upper limit plate and a lower limit plate are arranged outside the adjusting rod, the outer portion of the upper limit plate abuts against the bottom of the limiting column, a lower pressing plate is movably arranged outside the adjusting rod, and the outer portion of the lower limit plate abuts against one side of the lower pressing plate; The outside of the internal expansion sleeve is in contact with the inner wall of the supporting tube rod, and a conical sleeve column is sleeved on one end of the adjusting rod close to the supporting tube rod, one end of the conical sleeve column is aligned with the internal expansion sleeve, and the other surface of the lower pressure plate faces the other end of the conical sleeve column, a return spring is arranged between the lower pressure plate and the conical sleeve column, a supporting bottom block is fixedly arranged on the end of the adjusting rod, and the bottom of the internal expansion sleeve is in contact with the outside of the supporting bottom block, and the starting end of the adjusting rod extends to the outside of the telescopic tube rod.

2. A stepless telescopic crutch according to claim 1, characterized in that: One end surface of the conical sleeve column close to the internal expansion sleeve is a conical surface, and the other end of the conical sleeve column is connected to one end of the return spring, and the other end of the return spring is connected to the pressing plate.

3. The stepless telescopic crutch according to claim 1, characterized in that: The internal expansion kit includes a plurality of limiting slices and a fixed ring plate, the end of the adjusting rod is inserted into the interior of the fixed ring plate, the supporting bottom block is in contact with one side of the fixed ring plate, and a plurality of limiting slices are distributed in a ring shape on the other side of the fixed ring plate, the other side of the fixed ring plate is aligned with the conical sleeve column, when one end of the conical sleeve column is located inside the internal expansion kit, one end face of the conical sleeve column is in contact with the inner walls of a plurality of limiting slices, and an installation groove is provided on the outside of the internal expansion kit, and a limiting collar is provided inside the installation groove.

4. The stepless telescopic crutch according to claim 3, characterized in that: The outside of several of the limiting segments is provided with an abutment portion. When one end of the conical sleeve is located inside the internal expansion sleeve, the outside of the abutment portion abuts against the inner wall of the supporting tube rod, and the bottom inner side of several of the limiting segments abuts against the adjusting rod.

5. The stepless telescopic crutch according to claim 1, characterized in that: The central axis of the telescopic pipe rod and the central axis of the supporting pipe rod are both located on the same central axis.

6. The stepless telescopic crutch according to claim 1, characterized in that: An armrest handle is provided at the top of the telescopic tube rod, and a mounting through hole is opened at the bottom of the armrest handle. The mounting through hole is sleeved on the top of the telescopic tube rod, and an adjusting button cap is sleeved on the starting end of the adjusting rod, and the adjusting button cap is located outside the mounting through hole.

7. The stepless telescopic crutch according to claim 1, characterized in that: A supporting foot plate is arranged at the bottom of the supporting tube rod, a mounting bayonet is arranged at the top of the supporting foot plate, the mounting bayonet is matched with the bottom of the supporting tube rod, and anti-slip grooves are arranged at the bottom of the supporting foot plate.

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