Structure for adjusting the telescoping of a cane

Abstract

Provided is a structure for adjusting the telescopic length of a walking stick, which improves the stability of the use and telescopic adjustment of the walking stick. 【Solution means】It includes an inner pipe 10, an outer pipe 20, and an interlocking unit 30. The interlocking unit is provided to penetrate between the inner pipe and the outer pipe. In particular, the push piece 33 of the interlocking unit is fixedly provided at the end of the inner pipe. The clamping member of the interlocking unit extends movably into the outer pipe. Also, the shaft rod 31 is further assembled and connected to the trigger handle on the upper half of the inner pipe by a connecting block 32 to be interlocked. Thus, the lifting and lowering displacement of the shaft rod can be controlled by using the trigger handle 13, and it is interlocked with the clamping member 34 and the push piece to be in a state of stretching and clamping or contracting and loosening, and further adjusting or fixing the length between the outer pipe and the inner pipe.

Description

Technical Field

[0001] The present invention relates to a cane for assisting walking, and particularly to a structure for adjusting the telescopic length of the cane.

Background Art

[0002] So far, in the structure for adjusting the telescopic length of a conventional hand-held cane, as shown in FIGS. 10 and 11, the hand-held cane 40 includes a main rod 41 and a sub-rod 42, and a telescopic positioning structure 50 is provided at the position where the main rod 41 and the sub-rod 42 face each other. The telescopic positioning structure 50 includes a pipe sleeve 51 and an expansion actuator 52. The pipe sleeve 51 is inserted into and incorporated into the sub-rod 42, presenting a tight fit state, and an external thread segment 511 is formed on the surface of the pipe sleeve 51. The other side of the expansion actuator 52 is in a cylindrical shape and is screwed into the external thread segment 511 of the pipe sleeve 51. Also, an elastic claw portion 521 is provided at the bottom of the expansion actuator 52. A cone base 60 is fitted into the pipe sleeve 51, and a support portion 512 for the bottom of the cone base 60 to abut thereon is provided on the pipe sleeve 51. Also, between the cone base 60 and the elastic claw portion 521 of the expansion actuator 52, it presents a state of being obliquely abutted and fitted. As a result, the elastic claw portion 521 of the expansion actuator 52 protrudes outward, and further comes into close contact with the inner wall of the main rod 41 to reach a positioning state. When attempting to adjust the length of the hand-held cane 40, the user rotates the sub-rod 42, and at the same time rotates the pipe sleeve 51 and the cone base 60 together, and can move the external thread segment 511 of the pipe sleeve 51, causing a screw rotation displacement between the pipe sleeve 51 and the expansion actuator 52, that is, it can control the tight fitting or loosening separation between the expansion actuator 52 and the cone base 60, and further achieve the purpose of adjusting the length.

[0003] However, considering the above-mentioned conventional structure in detail, it can be seen that there are still some drawbacks, and the main reasons are as follows. (1) When the walking stick 40 is tightened by the screw lock of the male screw segment 511 of the pipe sleeve 51, the expansion actuator 52 can be opened on the cone base 60, and the inner wall of the main rod 41 can be tightened against the elastic claw portion 521 of the expansion actuator 52. However, if the tightening strength is to be increased, more force needs to be applied to press the pipe sleeve 51 against the expansion actuator 52. Since the rotational resistance of the screw lock is too large, it clearly causes a situation where the operation becomes very difficult. Also, when weight is added to the main rod 41, the expansion actuator 52 is further tightly clamped at the male screw segment 511 of the pipe sleeve 51, which easily causes locking between the expansion actuator 52 and the pipe sleeve 51, making it difficult for the user to loosen the sub-rod 42, resulting in the drawbacks of difficult operation and cumbersome operation.

[0004] (2) Between the male screw segment 511 of the pipe sleeve 51 and the expansion actuator 52, the length must be adjusted by turning. Moreover, the sub-rod 42 has a smooth outer surface, making it difficult for the user to grip and turn the sub-rod 42. Also, by turning the sub-rod 42, the speed of adjusting the length becomes slow, and the length of the walking stick 40 cannot be changed quickly according to the usage situation, resulting in inconvenience in use operation.

[0005] In view of this, the inventor has been engaged in the manufacturing, development, and design experience of related products for many years. After giving detailed design and careful evaluation for the above-mentioned goals, the present invention with practicality has been obtained.

Summary of the Invention

Problems to be Solved by the Invention

[0006] The technical problem to be solved by the present invention is to provide a structure for adjusting the telescopic length of the walking stick to address the above-mentioned drawbacks existing in the prior art.

Means for Solving the Problems

[0007] In the structure for adjusting the telescoping of the aforesaid cane, it includes an inner pipe, an outer pipe, and an interlocking unit. A guide plane is formed along the axial direction on the outer diameter of the inner pipe. A through hole and a positioning hole penetrating the surface are provided in the upper half of the guide plane. A connecting sleeve corresponding to the through hole and the positioning hole is assembled to the inner pipe. A first pivot portion and a second pivot portion are provided on the connecting sleeve. The first pivot portion is formed in the shape of two protrusions, and a through groove penetrating the inner and outer surfaces of the connecting sleeve is provided between the two protrusions. A positioning bump fastened and fixed to the positioning hole is further provided on the inner wall of the connecting sleeve. A trigger handle is provided on the first pivot portion. The trigger handle has a connecting portion in the center and an interlocking portion at the tip. The interlocking portion extends into the inner pipe through the through groove and the through hole. The connecting portion is pivotally connected to the first pivot portion. A lock cap is assembled to the second pivot portion. The lock cap is used to stop the movement of the trigger handle. A grip is provided at the top of the inner pipe. A non-slip rubber is fitted on one side of the outer pipe, and a pipe opening is formed on the other side. An outer pipe sleeve is provided at the pipe opening. There is a position limiting plane at the inner diameter of the outer pipe sleeve. The inner pipe is inserted and assembled from the pipe opening, and the guide plane is aligned with the position limiting plane of the outer pipe sleeve, further restricting the rotation of the inner pipe. The interlocking unit is provided between the inner pipe and the outer pipe and includes a shaft rod, a connecting block, a push piece, and a fastening member. A first threaded segment and a second threaded segment are formed on both sides of the shaft rod, and a first position limiting portion protrudes from the rod body of the shaft rod. The first position limiting portion is used to fix a spring washer. The shaft rod penetrates and is fitted into the spring above the second threaded segment. One side of the spring is in contact with and positioned by the spring washer. One side of the connecting block is fixed to the first threaded segment of the shaft rod.An assembly notch that can be assembled with the linkage part of the trigger handle is provided on the lateral edge of the connecting block. The push piece is provided with an axial groove penetrating both sides, and the axial groove passes through the second screw segment and is fitted through the shaft rod. Thereby, the spring is restricted between the push piece and the spring washer. A joint part that can be assembled with one side of the inner pipe is provided on one side of the push piece. The joint part has a fitting plane that fits and is fixed with the guide plane of the inner pipe. A conical part is provided on the other side of the push piece. A position-limiting ring part that abuts against the edge of the inner pipe is further provided between the conical part and the joint part. A plurality of struts that are annular and adjacent to the fastening member are provided, and a shaft hole is formed between the struts. At least one elastic coil can be fitted at the outer diameter position of the struts. The fastening member passes through the second screw segment of the shaft rod through the shaft hole, and the struts cover the conical part of the push piece. A screw lock assembly is further used between the end of the fastening member and the second screw segment for assembly and fixation. The fastening member extends into the outer pipe. Thereby, by rotating the trigger handle, the lifting and lowering displacement of the shaft rod can be controlled, and the fastening member and the push piece are interlocked to protrude and fasten or contract and loosen, and further reach a state of adjusting or fixing the length between the outer pipe and the inner pipe.

[0008] Here, a bonding plane is provided at the inner diameter of the connecting sleeve to fit and fix with the guide plane of the inner pipe. The lock cap is reversibly assembled to the second pivot portion of the connecting sleeve. The lock cap has a groove cut for one side of the trigger handle to protrude. A fitting post is provided on the inner wall of the lock cap. A fitting groove is provided on the outer wall of the first pivot portion of the connecting sleeve. The fitting post is fastened and fixed to the fitting groove. Furthermore, it is preferable to use the lock cap to stop the trigger handle from being pulled upward, so that the trigger handle realizes the locking function.

[0009] Here, a cushion spring is further provided at the inner diameter of the outer pipe, and it is preferable that the cushion spring abuts on the upper side of the anti-slip rubber.

[0010] Here, it is preferable that a non-circular hole-shaped tool hole is provided on the other side of the connecting block.

[0011] Here, a second position limiting portion protrudes at the place where the shaft rod is adjacent to the first screw segment. A soft collar body for fitting the shaft rod is further provided. The soft collar body is restricted between the first position limiting portion and the second position limiting portion. It is preferable that the outer diameter of the soft collar body is larger than the outer diameter of the spring washer.

[0012] Here, there is a tapered segment with a reduced diameter at the end of the shaft hole of the fastening member. The screw lock assembly includes a hollow stud and a nut. The hollow stud is fitted into the tapered segment. A screw segment that is screwed and fitted with the second screw segment is provided at the inner diameter of the hollow stud. The nut is screwed and provided at the end of the second screw segment and preferably abuts on the bottom of the fastening member.

Advantages of the Invention

[0013] Compared with the prior art, the effect of the present invention is that the interlocking unit is provided to penetrate between the inner pipe and the outer pipe. In particular, the push piece of the interlocking unit is fixedly provided at the end of the inner pipe, and the clamping member of the interlocking unit movably extends into the outer pipe. Further, the shaft rod is further linked and interlocked with the trigger handle on the upper half of the inner pipe by the connecting block, so that the lifting displacement of the shaft rod can be controlled by using the trigger handle, and the clamping member and the push piece are interlocked to be in a state of stretching and clamping or shrinking and loosening. Furthermore, by adjusting or fixing the length between the outer pipe and the inner pipe, with a simple and labor-saving telescopic adjustment function, the user can easily and quickly adjust to an appropriate length, which is most suitable for the use of the elderly with relatively weak strength and relatively difficult to use skillfully, and improves the convenience of its use. By design, there is a guide plane at the position of the outer diameter of the inner pipe, and a position-limiting plane is also provided on the inner side wall of the outer pipe sleeve of the outer pipe. Therefore, when the telescopic adjustment is performed between the inner pipe and the outer pipe under the guiding restriction of the guide plane, it helps to effectively avoid idling between the inner pipe and the outer pipe and improve the stability of the use and telescopic adjustment of the cane.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Modes for Carrying Out the Invention

[0015] In order to better understand and recognize the object, features, and effects of the present invention, the following will be described in detail with reference to the drawings in a brief description of the drawings.

[0016] First, as shown in FIGS. 1, 2, 3, and 4, a structure for adjusting the telescoping of the cane includes an inner pipe 10, an outer pipe 20, and an interlocking unit 30. A guide plane 11 is formed along the axial direction on the outer diameter of the inner pipe 10. A through hole 111 and a positioning hole 112 that penetrate the surface are provided in the upper half of the guide plane 11. A connecting sleeve 12 is assembled to the inner pipe 10 opposite to the through hole 111 and the positioning hole 112. A bonding plane 121 is provided at the inner diameter of the connecting sleeve 12 to fit and fix with the guide plane 11 of the inner pipe 10. A first pivot portion 122 and a second pivot portion 123 are provided at the outer diameter of the connecting sleeve 12. The first pivot portion 122 is formed in the shape of two protrusions, and a through groove 124 that penetrates the inner and outer surfaces of the connecting sleeve 12 is provided between the two protrusions. The through groove 124 communicates with the through hole 111. A positioning bump 125 that is fastened and fixed to the positioning hole 112 is further provided on the inner wall of the connecting sleeve 12. A trigger handle 13 is assembled to the first pivot portion 122. The trigger handle 13 has a connecting portion 131 in the center and an interlocking portion 132 at the tip. The interlocking portion 132 extends into the inner pipe 10 through the through groove 124 and the through hole 111. The connecting portion 131 is pivotally connected to the first pivot portion 122. A lock cap 14 is assembled to the second pivot portion 123. The lock cap 14 is used to stop the movement of the trigger handle 13. The lock cap 14 is reversibly assembled to the second pivot portion 123 of the connecting sleeve 12. The lock cap 14 has a grooving 141 for allowing one side of the trigger handle 13 to protrude. A fitting post 142 is provided on the inner wall of the lock cap 14. A fitting groove 126 is provided on the outer wall of the connecting sleeve 12 at the outside of the first pivot portion 122. The fitting post 142 is fastened and fixed to the fitting groove 126. Further, by using the lock cap 14, the trigger handle 13 is stopped from being pulled upward, and the trigger handle 13 realizes a locking function. A grip 15 is provided at the top of the inner pipe 10.On one side of the outer pipe 20, an anti-slip rubber 21 is fitted. On the other side, an opening 22 of the pipe is formed. An outer pipe sleeve 23 is provided at the opening 22 of the pipe. There is a position-limiting plane 231 at the inner diameter of the outer pipe sleeve 23. The inner pipe 10 is inserted and assembled from the opening 22 of the pipe, and the guide plane 11 is aligned with the position-limiting plane 231 of the outer pipe sleeve 23, further restricting the rotation of the inner pipe 10. A cushion spring 24 is further provided at the inner diameter of the outer pipe 20, and the cushion spring 24 abuts on the upper side of the anti-slip rubber 21. The interlocking unit 30 is provided between the inner pipe and the outer pipes 10 and 20, and includes a shaft rod 31, a connecting block 32, a push piece 33, and a fastening member 34. First screw segments 311 and second screw segments 312 are formed on both sides of the shaft rod 31, and a first position-limiting portion 313 protrudes from the rod body of the shaft rod 31. The first position-limiting portion 313 is used to fixedly provide a spring washer 314. The shaft rod 31 penetrates and is fitted into the spring 315 above the second screw segment 312. One side of the spring 315 is in a state of being abutted and positioned on the spring washer 314. One side of the connecting block 32 is fixedly provided on the first screw segment 311 of the shaft rod 31. A non-circular tool hole 321 is provided on the other side of the connecting block 32. A non-circular tool hole 321 is installed at the other end of the connecting block 32, and a hand tool is used to screw-lock the connecting block 32 to the first screw segment 311. An assembly notch 322 assembled with the interlocking portion 132 of the trigger handle 13 is provided at the lateral edge of the connecting block 32. The push piece 33 is provided with axial grooves 331 penetrating both sides, and passes through the second screw segment 312 through the axial grooves 331 and is fitted through the shaft rod 31. Thereby, the spring 315 is restricted between the push piece 33 and the spring washer 314. Also, a joint portion 332 assembled with one side of the inner pipe 10 is provided on one side of the push piece 33.The joint portion 332 has a fitting plane 333 that fits and is fixed to the guide plane 11 of the inner pipe 10. A cone portion 334 is provided on the other side of the push piece 33. Further, a position-limiting ring portion 335 that abuts against the edge of the inner pipe 10 is provided between the cone portion 334 and the joint portion 332. A plurality of struts 341 that are annular and adjacent to the fastening member 34 are provided, and a shaft hole 342 is formed between the struts 341. At least one elastic coil 343 can be fitted at the outer diameter position of the struts 341. The fastening member 34 passes through the second threaded segment 312 of the shaft rod 31 through the shaft hole 342, and the cone portion 334 of the push piece 33 is covered by the struts 341. A screw lock assembly 35 is further used between the end of the fastening member 34 and the second threaded segment 312 for assembly and fixation. Finally, the cone portion 334 of the push piece 33 and the fastening member 34 are extended into the outer pipe 20.

[0017] Furthermore, a second position-limiting portion 316 protrudes and is provided at a position adjacent to the first threaded segment 311 of the shaft rod 31. A soft column body 317 into which the shaft rod 31 is fitted is further provided. The soft column body 317 is restricted between the first position-limiting portion and the second position-limiting portions 313 and 316. Also, since the outer diameter of the soft column body 317 is larger than the outer diameter of the spring washer 314, not only does the shaft rod 31 pass through the soft column body 317 and be centered, but it can also prevent the spring washer 314 from hitting the inner wall of the inner pipe and generating noise.

[0018] More specifically, there is a tapered segment 344 with a reduced diameter at the end of the shaft hole 342 of the clamping member 34. The screw lock assembly 35 includes a hollow stud 351 and a nut 352. The hollow stud 351 is fitted into the tapered segment 344, and a screw segment that is screwed and fitted with the second screw segment 312 is provided at the inner diameter of the hollow stud 351. The nut 352 is screwed and provided at the end of the second screw segment 312 and abuts against the bottom of the clamping member 34.

[0019] Regarding the assembly of the structure, as shown in FIGS. 3, 4, and 5 again, for the interlocking unit 30, first, it is assembled to the connecting block 32 with the first screw segment 311 of the shaft rod 31. Next, the second screw segment 312 is inserted through the spring washer 314 and the spring 315 from bottom to top. The spring washer 314 is fixed to the first position limiting portion 313 of the shaft rod 31. Further, the spring 315 is defined in the lower half of the shaft rod 31. The push piece 33 passes the second screw segment 312 from bottom to top through the cone portion 334 facing downward and through the axial groove 331, and is inserted through and fitted into the shaft rod 31. At the same time, the spring 315 is restricted between the spring washer 314 and the push piece 33. Next, the shaft rod 31, together with the connecting block 32 and the push piece 33, is assembled to the inner pipe 10. The shaft rod 31 is assembled into the inner pipe 10 from bottom to top with the connecting block 32. Further, it is tightened and fixed at the inner diameter of the bottom of the inner pipe 10 at the joint portion 332 of the push piece 33. Finally, using the position limiting ring portion 335, it abuts against and is restricted by the bottom of the inner pipe 10, and the second screw segment 312 protrudes out beside the push piece 33. The assembly notch 322 of the connecting block 32 faces the through hole 111 of the inner pipe 10. Further, the interlocking portion 132 of the trigger handle 13 passes through the through groove 124 and the through hole 111, and then buckles and connects with the assembly notch 322 of the connecting block 32. The connecting portion 131 of the trigger handle 13 is pivotally provided at the first pivot portion 122 of the connecting sleeve 12, and a retraction fulcrum is formed. Therefore, the shaft rod 31 can be displaced vertically with the retraction movement of the trigger handle 13. The tightening member 34 is provided so that the tensioning tool 341 thereof goes around the outside of the cone portion 334 of the push piece 33 to cover it, and the shaft hole 342 is sleeved on the second screw segment 312. Finally, using the screw lock assembly 35, the tightening member 34 is fixed to the second screw segment 312. The outer pipe 20 is used such that the opening 22 of the pipe is for the insertion and assembly of the inner pipe 10.And by fitting and restricting the guide plane 11 of the inner pipe 10 with the position restricting plane 231 of the outer pipe sleeve 23, it is further possible to prevent the inner pipe 10 from idling in the outer pipe 20, and a structure for adjusting the telescopic movement of the cane of the present invention is realized.

[0020] In the state where this structure is actually used, as shown in FIG. 4, when the trigger handle 13 is not pulled, the shaft rod 31 is pressed by the spring 315, and the tightening member 34 is always provided so as to go around the outside of the conical portion 334 of the push piece 33. Since the conical portion 334 is designed to gradually expand from bottom to top, the tensioning tool 341 protrudes outward and opens, and the outer diameter of the tensioning tool 341 of the tightening member 34 is firmly tightened against the inner wall of the outer pipe 20, and the outer pipe 20 is fixed. When the user uses the cane for walking, since the cane is used as a means to support the body, a part of the center of gravity of the body shifts to the cane, and the force is transferred to the outer pipe 20 along the inner pipe 10. In addition, the inner pipe 10 receives a force from the user from top to bottom, and the outer pipe 20 presses against the ground to generate an upward reaction force. Therefore, the effect of tensioning and tightening between the push piece 33 and the tightening member 34 of the interlocking unit 30 is enhanced, effectively preventing the outer pipe 20 from sliding along the inner pipe 10, maintaining the stability of the cane when it is used, and improving the safety of the cane when it is used for walking.

[0021] When the user adjusts the length of the cane, as shown in FIGS. 5 to 9 again, first, turn the lock cap 14 upside down and open it, and release the trigger handle 13 from the closed state by the lock cap 14 so that it can be pulled. When pulling and operating it, while the user holds the grip 15, the trigger handle 13 can be pulled upward directly with the index finger or middle finger, which helps to improve the convenience of adjusting the length of the cane. When the trigger handle 13 is pulled, it is pulled upward with the connecting part 131 as the fulcrum, and the connecting block 32 is pushed downward by the interlocking part 132. At this time, the shaft rod 31 sinks with the displacement of the connecting block 32, and the spring 315 is pushed downward by the spring washer 314 to be in a compressed state. Also, the shaft rod 31 is such that the tightening member 34 of the second screw segment 312 moves downward and away from the cone part 334 of the push piece 33, and the tightening member 34 is in a non-tensioned state. And using the elastic coil 343, the tensioning tool 341 of the tightening member 34 is forcibly retracted inward. As a result, the inner wall of the outer pipe 20 is no longer fixed by being tensioned by the tightening member 34. At this time, when the cane is lifted off the ground, it naturally extends downward due to the weight of the outer pipe 20, which is the adjustment of the extension of the cane. Or when the cane is pushed downward and supported by the ground, the outer pipe 20 can be displaced upward along the inner pipe 10 to adjust the cane to be retracted, and the purpose of stepless telescopic adjustment can be realized. After adjustment, when the trigger handle 13 is released, the shaft rod 31 is displaced upward by the spring-back of the spring 315 and rises, and the trigger handle 13 is pulled back to its original position in an interlocked manner and is not in a pulled state. The tightening member 34 moves upward with the shaft rod 31 and is in a state of being tensioned along the cone part 334 of the push piece 33. Furthermore, using the tensioning tool 341, it is tightened again on the inner wall of the outer pipe 20 to be in a positioned state, and the telescopic adjustment of the cane is quickly and easily realized. Finally, by turning the lock cap 14 further upward and buckling it to fix it, it is possible to prevent the trigger handle 13 from being accidentally triggered.While keeping the trigger handle 13 locked, when the cane is used to climb stairs, the user can quickly and appropriately adjust the length of the cane according to the length of the arm and the height of the stairs. Also, when standing up from a sitting position, if the user touches the ground with the shortened cane, it can help the user stand up, greatly improving the practicality of this structure.

[0022] With the structure of the above specific embodiment, the following advantages can be obtained. The interlocking unit 30 is provided to penetrate between the inner pipe, the outer pipes 10 and 20. In particular, the push piece 33 of the interlocking unit 30 is fixedly provided at the end of the inner pipe 10, and the tightening member 34 of the interlocking unit 30 movably extends into the outer pipe 20. Also, the shaft rod 31 is further linked and interlocked with the trigger handle 13 on the upper half of the inner pipe 10 by the connecting block 32, so that the lifting and lowering displacement of the shaft rod 31 can be controlled by using the trigger handle 13, and the tightening member 34 and the push piece 33 are interlocked and tensed or shrunk and loosened together, and further the length between the outer pipe 20 and the inner pipe 10 is adjusted or fixed, so that with a simple and labor-saving telescopic adjustment function, the user can easily and quickly adjust to an appropriate length, which is most suitable for the use of the elderly who are relatively weak in strength and relatively difficult to use skillfully, improving the usability thereof.

[0023] Also, by design, there is a guide plane 11 at the outer diameter of the inner pipe 10, and a position limiting plane 231 is also provided on the inner side wall of the outer pipe sleeve 23 of the outer pipe 20. Therefore, when being subjected to the guiding limitation of the guide plane 11 and telescopic adjustment is performed between the inner pipe 10 and the outer pipe 20, it helps to effectively avoid the idling between the inner pipe and the outer pipes 10 and 20, and improve the stability of the use and telescopic adjustment of the cane.

[0024] The above is only one embodiment of the present invention and does not limit the scope of implementation of the present invention. That is, changes, modifications, etc. made within the scope of the claims for utility model registration of the present invention should also belong to the scope of the present invention.

Explanation of Reference Numerals

[0025] 10 Inner Pipe 11 Guide Plane 111 Through Hole 112 Positioning Hole 12 Connecting Sleeve 121 Bonding Plane 122 First Pivot Portion 123 Second Pivot Portion 124 Through Groove 125 Positioning Bump 126 Fitting Groove 13 Trigger Handle 131 Connection Portion 132 Interlocking Portion 14 Lock Cap 141 Groove Cutting 142 Fitting Post 15 Grip 20 Outer Pipe 21 Anti-Slip Rubber 22 Pipe Opening 23 Outer Pipe Sleeve 231 Position Limiting Plane 24 Spring for Cushion 30 Interlocking Unit 31 Shaft Rod 311 First Screw Segment 312 Second Screw Segment 313 First Position Limiting Portion 314 Spring Washer 315 Spring 316 Second Position Limiting Portion 317 Soft Column Body 32 Connecting Block 321 Tool Hole 322 Assembly Notch 33 Push Piece 331 Axial groove 332 Joint part 333 Fitting plane 334 Cone part 335 Position limiting ring part 34 Clamping member 341 Protrusion tool 342 Shaft hole 343 Elastic coil 344 Taper segment 35 Screw lock assembly 351 Hollow stud 352 Nut 40 Handheld stick 41 Main rod 42 Sub-rod 50 Telescopic positioning structure 51 Pipe sleeve 511 Female thread segment 512 Support part 52 Expansion actuator 521 Elastic claw part 60 Cone base

Claims

1. A structure for adjusting the telescopic length of a cane, comprising an inner pipe, an outer pipe, and an interlocking unit, A guide plane is formed along the axial direction on the outer diameter of the inner pipe. A through hole and a positioning hole penetrating the surface are provided in the upper half of the guide plane. A connecting sleeve opposite to the through hole and the positioning hole is assembled on the inner pipe. A first pivot part and a second pivot part are provided on the connecting sleeve. The first pivot part is formed in the shape of two protrusions, and a through groove penetrating the inner and outer surfaces of the connecting sleeve is provided between the two protrusions. A positioning bump fastened and fixed to the positioning hole is further provided on the inner side wall of the connecting sleeve. A trigger handle is assembled on the first pivot part. The trigger handle has a connecting part in the center and an interlocking part at the tip. The interlocking part extends into the inner pipe through the through groove and the through hole. The connecting part is pivotally connected to the first pivot part. A lock cap is assembled on the second pivot part. The lock cap is used to stop the movement of the trigger handle. A grip is provided at the top of the inner pipe. An anti-slip rubber is fitted on one side of the outer pipe, and an opening of the pipe is formed on the other side. An outer pipe sleeve is provided at the opening of the pipe. There is a position limiting plane at the inner diameter of the outer pipe sleeve. The inner pipe is inserted and assembled from the opening of the pipe, and the guide plane is aligned with the position limiting plane of the outer pipe sleeve, further restricting the rotation of the inner pipe. When the interlocking unit is provided between the inner pipe and the outer pipe, it includes a shaft rod, a connecting block, a push piece, and a fastening member. First screw segments and second screw segments are formed on both sides of the shaft rod, and a first position limiting portion protrudes from the rod body of the shaft rod. The first position limiting portion is used to fixedly provide a spring washer. The shaft rod penetrates through the spring and is fitted above the second screw segment. One side of the spring abuts against the spring washer and is positioned. One side of the connecting block is fixedly provided on the first screw segment of the shaft rod, and an assembly notch for assembling with the interlocking portion of the trigger handle is provided on the lateral edge of the connecting block. Axial grooves are provided on both sides of the push piece and penetrate through the second screw segment and the shaft rod through the axial grooves, whereby the spring is restricted between the push piece and the spring washer. A joint portion for assembling with one side of the inner pipe is provided on one side of the push piece. The joint portion has a fitting plane that fits and is fixed with the guide plane of the inner pipe. A cone portion is provided on the other side of the push piece, and a position limiting ring portion that abuts against the edge of the inner pipe is further provided between the cone portion and the joint portion. A plurality of struts in an annular shape are provided adjacent to the fastening member, and a shaft hole is formed between the struts. At least one elastic coil can be fitted at the outer diameter of the struts. The fastening member passes through the second screw segment of the shaft rod through the shaft hole, and the struts cover the cone portion of the push piece. The end of the fastening member and the second screw segment are further assembled and fixed using a screw locking assembly. The fastening member extends into the outer pipe, whereby the lifting and lowering displacement of the shaft rod is controlled by rotating the trigger handle, and the fastening member and the push piece are interlocked to be in a state of protruding and tightening or contracting and loosening, and further adjusting the length between the outer pipe and the inner pipe,A structure for adjusting the telescopic movement of a cane, characterized by reaching a state of being fixed or the like.

2. A bonding plane is provided at the inner diameter of the connecting sleeve to fit and fix with the guide plane of the inner pipe. The lock cap is assembled to be reversible to the second pivot part of the connecting sleeve. The lock cap has a groove for the one side of the trigger handle to protrude. Insertion columns are provided on the inner wall of the lock cap. A fitting groove is provided on the outer wall of the first pivot part of the connecting sleeve. The insertion columns are fastened and fixed to the fitting groove. Further, the lock cap is used to stop the trigger handle from being pulled upward, and the trigger handle realizes a locking function. The structure for adjusting the telescopic of the cane according to claim 1 is characterized in that.

3. A cushion spring is further provided at the inner diameter of the outer pipe, and the cushion spring abuts on the upper side of the anti-slip rubber. The structure for adjusting the telescopic of the cane according to claim 1 is characterized in that.

4. A non-circular hole-shaped tool hole is provided on the other side of the connecting block. The structure for adjusting the telescopic of the cane according to claim 1 is characterized in that.

5. A second position limiting part protrudes at the position adjacent to the first screw segment of the shaft rod. A soft collar body for fitting the shaft rod is further provided. The soft collar body is limited between the first position limiting part and the second position limiting part. The outer diameter of the soft collar body is larger than the outer diameter of the spring washer. The structure for adjusting the telescopic of the cane according to claim 1 is characterized in that.

6. There is a tapered segment with a reduced diameter at the end of the shaft hole of the fastening member. The screw lock assembly includes a hollow stud and a nut. The hollow stud is fitted into the tapered segment. A screw segment for screwing and fitting with the second screw segment is provided at the inner diameter of the hollow stud. The nut is screwed and provided at the end of the second screw segment and abuts on the bottom of the fastening member. The structure for adjusting the telescopic of the cane according to claim 1 is characterized in that.

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