A retractable aluminum tube

Abstract

This utility model relates to the field of aluminum tube technology, and in particular to a retractable aluminum tube, comprising a retractable aluminum tube walking stick body. The retractable aluminum tube walking stick body is composed of a first retractable aluminum tube, a second retractable aluminum tube, and a third retractable aluminum tube. A first locking sleeve is provided between the first and second retractable aluminum tubes, and a second locking sleeve is provided between the second and third retractable aluminum tubes. A sleeve is provided on the third retractable aluminum tube, and the sleeve has an internal thread and a limiting top groove. An installation plate is fitted on the sleeve, and the installation plate has a stick tip and a finger buckle groove. A connecting plate is provided on the first retractable aluminum tube, and a stick handle is provided on the connecting plate. An installation post is provided on the installation plate, and the installation post has an external thread. The installation plate has a dust cover and a limiting insert ring. This improves the installability and replaceability of the retractable aluminum tube walking stick body and the stick tip, avoids the external thread causing pressure damage and deformation to the internal thread, and improves the bonding stability of the installation structure between the stick handle and the retractable aluminum tube walking stick body.

Description

Technical Field

[0001] This utility model relates to the field of aluminum tube technology, and in particular to a telescopic aluminum tube. Background Technology

[0002] The telescopic aluminum tube pole is made up of multiple aluminum tubes of different diameters stacked together. By sliding, these aluminum tubes can extend to increase the overall length or retract to reduce the space occupied. It is commonly used in trekking pole products.

[0003] When not in use (such as when traveling or traversing flat terrain where poles are not required), trekking poles can be retracted to their shortest length using the pre-set retractable aluminum tube, making it easy to pack them into a backpack. This is very convenient. When going uphill, the retractable aluminum tube of the trekking pole needs to be shortened to avoid raising your arms too high and to provide better propulsion. When going downhill, the retractable aluminum tube of the trekking pole needs to be lengthened to provide effective support even when the body's center of gravity is lowered.

[0004] Currently, the telescopic aluminum tubes used in trekking poles typically have their tips pressed into the lower inner tube of the telescopic aluminum tube body via an interference fit. After prolonged use, the tips will wear down. Because of this interference fit connection method, the worn tips cannot be replaced, and the trekking pole and its telescopic aluminum tube body must be thrown away and a new one purchased, resulting in waste.

[0005] Some trekking poles use a retractable aluminum tube body with a pre-installed internal thread in the lower inner tube, which can be threaded to the tip, allowing for tip replacement.

[0006] However, when the tip of the trekking pole is connected to the internal thread of the retractable aluminum tube body via the external thread, there will be vertical pressure between the external and internal threads when using the trekking pole. Since the tip of the pole is generally made of harder tungsten carbide steel, while the retractable aluminum tube body is made of softer material, the harder external thread will cause pressure damage and deformation to the softer internal thread, which will affect the thread connection between the internal thread of the retractable aluminum tube body and the external thread of the tip.

[0007] In addition, the existing trekking poles with retractable aluminum tube bodies have relatively weak bonding stability between the mounting structure and the handle.

[0008] Therefore, we designed a retractable aluminum tube for trekking poles to meet the needs of practical applications. Utility Model Content

[0009] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a retractable aluminum tube.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: Design a telescopic aluminum tube, including a telescopic aluminum tube cane body, the telescopic aluminum tube cane body being composed of a first telescopic aluminum tube, a second telescopic aluminum tube, and a third telescopic aluminum tube, a first locking sleeve being provided between the first telescopic aluminum tube and the second telescopic aluminum tube, a second locking sleeve being provided between the second telescopic aluminum tube and the third telescopic aluminum tube, a sleeve being provided on the third telescopic aluminum tube, the sleeve having an internal thread and a limiting top groove, an installation plate being fitted on the sleeve, the installation plate having a cane tip and a finger buckle groove, a connecting plate being provided on the first telescopic aluminum tube, a cane handle being provided on the connecting plate, and an installation post being provided on the installation plate, the installation post having an external thread; The mounting plate is equipped with a dust cover and a limiting ring, and the connecting plate is equipped with a positioning block and a fixing slot; The first telescopic aluminum tube is provided with a fixing block, and a positioning groove is provided on the first telescopic aluminum tube.

[0011] In detail, the first telescopic aluminum tube and the second telescopic aluminum tube are slidably sleeved together, and the second telescopic aluminum tube and the third telescopic aluminum tube are slidably sleeved together.

[0012] In detail, the sleeve is fixedly installed on the left end face of the third telescopic aluminum tube, the sleeve has a hollow cavity, and the internal thread is located in the hollow cavity of the sleeve and is threadedly connected to the external thread.

[0013] In detail, the mounting plate is a disc-shaped structure, the finger slots are twelve arranged in a circle, the limiting ring is inserted into the limiting top slot, and the dust cover is an annular structure.

[0014] In detail, the connecting plate is located on the left end face of the staff handle, and the positioning block is a regular hexagonal structure that is matched and inserted into the positioning groove.

[0015] In detail, the fixed slot is a rectangular inner groove opened on the left end face of the connecting plate, and the fixed block is a triangular structure with four of them arranged in a circle.

[0016] In detail, the slot is coated with a first adhesive layer, and the positioning groove is coated with a second adhesive layer.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application: 1. This utility model improves the ease of installation and replacement between the telescopic aluminum tube body and the tip of the trekking pole by setting a sleeve with internal threads on the telescopic aluminum tube body, setting an mounting post with external threads on the tip, and setting a mounting plate with a finger groove. When the tip wears out after long-term use, the worn tip can be easily removed and a new tip can be installed. This avoids the waste of having to throw away the entire trekking pole and telescopic aluminum tube body and buy a new one.

[0018] 2. This utility model features a limiting top groove on the sleeve and a limiting ring structure on the mounting plate of the cane tip. When the mounting plate is installed by threaded connection between the external thread and the internal thread on the sleeve, the limiting ring will be inserted into the limiting top groove to achieve a longitudinal limiting and positioning effect. This avoids the harder external thread causing pressure damage and deformation to the softer internal thread, thereby ensuring the threaded connection effect between the internal thread of the telescopic aluminum tube cane body and the external thread of the cane tip.

[0019] 3. This utility model sets four fixing slots and positioning blocks on the cane handle, and then matches and sets triangular fixing blocks and positioning grooves on the telescopic aluminum tube cane body. When the cane handle and the telescopic aluminum tube cane body are glued and fixed, the positioning blocks will match and be inserted into the positioning grooves, and at the same time, the fixing blocks will also be positioned and inserted into the matching fixing slots, which effectively improves the bonding stability of the installation structure between the cane handle and the telescopic aluminum tube cane body. Attached Figure Description

[0020] Figure 1 This is a first-view exploded three-dimensional schematic diagram of the overall structure of this utility model. Figure 2 For the present utility model Figure 1 A three-dimensional schematic diagram of the cane tip with a dust cover and a limiting ring; Figure 3 This is an exploded three-dimensional schematic diagram of the overall structure of this utility model from a second perspective. Figure 4 For the present utility model Figure 1 A three-dimensional schematic diagram of a retractable aluminum tube rod with a limiting top groove and a fixing block; Figure 5 This is a three-dimensional schematic diagram of the overall structure of this utility model in its installed state; Figure 6 For the present utility model Figure 3 A three-dimensional schematic diagram of a staff handle with a positioning block and a fixing slot.

[0021] In the diagram: 1. Telescopic aluminum tube cane body; 11. First telescopic aluminum tube; 12. First locking sleeve; 13. Second telescopic aluminum tube; 14. Second locking sleeve; 15. Third telescopic aluminum tube; 2. Fixed insertion block; 3. Cane handle; 31. Connecting plate; 32. Positioning block; 4. Fixed slot; 41. First adhesive layer; 5. Sleeve; 51. Internal thread; 52. Limiting top groove; 6. Mounting plate; 61. Cane tip; 62. Finger groove; 7. Mounting post; 71. External thread; 8. Dust cover; 81. Limiting insertion ring; 9. Positioning groove; 91. Second adhesive layer. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figures 1-6 A retractable aluminum tube includes a retractable aluminum tube cane body 1, which is composed of a first retractable aluminum tube 11, a second retractable aluminum tube 13, and a third retractable aluminum tube 15. A first locking sleeve 12 is provided between the first retractable aluminum tube 11 and the second retractable aluminum tube 13, and a second locking sleeve 14 is provided between the second retractable aluminum tube 13 and the third retractable aluminum tube 15. A sleeve 5 is provided on the third retractable aluminum tube 15, and an internal thread 51 and a limiting top groove 52 are provided on the sleeve 5. An installation plate 6 is fitted on the sleeve 5, and a cane tip 61 and a finger buckle groove 62 are provided on the installation plate 6. A connecting plate 31 is provided on the first retractable aluminum tube 11, and a cane handle 3 is provided on the connecting plate 31. An installation post 7 is provided on the installation plate 6, and an external thread 71 is provided on the installation post 7. The mounting plate 6 is equipped with a dust cover 8 and a limiting ring 81, and the connecting plate 31 is equipped with a positioning block 32 and a fixing slot 4. The first telescopic aluminum tube 11 is provided with a fixed insert block 2, and the first telescopic aluminum tube 11 is provided with a positioning groove 9.

[0024] It should be further noted that the first telescopic aluminum tube 11 and the second telescopic aluminum tube 13 are slidably sleeved together, and the second telescopic aluminum tube 13 and the third telescopic aluminum tube 15 are slidably sleeved together. The first telescopic aluminum tube 11, the first locking sleeve 12, the second telescopic aluminum tube 13, the second locking sleeve 14, and the third telescopic aluminum tube 15 described in this patent are all related component structures of the telescopic aluminum tube pole body 1 for trekking poles. Among them, the inner cavities of the first locking sleeve 12 and the second locking sleeve 14 are pre-threaded and are respectively threaded to the outer wall surfaces of the first telescopic aluminum tube 11 and the second telescopic aluminum tube 13. The working principle is based on the commonly used expansion... The expansion method involves first pulling out the first telescopic aluminum tube 11, the second telescopic aluminum tube 13, and the third telescopic aluminum tube 15 to the required approximate length. Then, the first locking sleeve 12 and the second locking sleeve 14 are rotated clockwise, respectively. Through threaded transmission, the expanders preset in the first locking sleeve 12 and the second locking sleeve 14 are squeezed. After being squeezed, the expanders expand outward radially like wedges, tightly pressing against the outer walls of the second telescopic aluminum tube 13 and the third telescopic aluminum tube 15. This huge static friction force prevents the sliding between the inner and outer tubes, achieving the locking and positioning effect after extension and retraction. This is a conventional existing technology.

[0025] It should be further noted that the sleeve 5 is fixedly installed on the left end face of the third telescopic aluminum tube 15. The sleeve 5 has a hollow cavity inside, and the internal thread is located in the hollow cavity of the sleeve 5 and is threadedly connected to the external thread 71. The sleeve 5, the rod tip 61, and the mounting post 7 described in this patent are all made of carbon tungsten steel.

[0026] It should be further explained that the installation plate 6 is a disc-shaped structure with twelve finger slots 62 arranged in a circle. By inserting a finger into the finger slot 62, the installation plate 6 can be rotated, thereby enabling the removal and installation of the cane tip 61 without the need for screwdrivers or other tools, which is very convenient.

[0027] The limiting ring 81 is inserted into the limiting top groove 52. The dust cover 8 has a circular structure and is made of NBR nitrile rubber, which has high elasticity, wear resistance, corrosion resistance and durability. When the rod tip 61 is threaded onto the internal thread 51 through the external thread 71, the dust cover 8 will press against the left end face of the sleeve 5 to achieve a sealing dustproof and waterproof effect, and prevent external dust and moisture from entering the threaded connection part.

[0028] It should be further noted that the connecting plate 31 is located on the left end face of the cane handle 3, the positioning block 32 is a regular hexagonal structure and is matched and inserted into the positioning groove 9, the cane handle 3 is made of EVA material and is firmly bonded to the positioning block 32 with epoxy resin.

[0029] The positioning block 32, the fixing block 2, the connecting plate 31, the mounting plate 6, the limiting ring 81, the first locking sleeve 12, and the second locking sleeve 14 described in this patent are all made of No. 45 steel.

[0030] It should be further noted that the fixed slot 4 is a rectangular inner groove and is opened on the left end face of the connecting plate 31. The fixed block 2 is a triangular structure and consists of four circumferentially arranged. The fixed block 2 is made of hard alloy steel, which has high strength and does not deform, and the triangular structure has strong stability.

[0031] It should be further noted that the slot 4 is coated with a first adhesive layer 41, and the positioning groove 9 is coated with a second adhesive layer 91. Both the first adhesive layer 41 and the second adhesive layer 91 are coated with epoxy resin. The first adhesive layer 41 achieves a stable bond between the slot 4 and the insertion block 2, while the second adhesive layer 91 achieves a stable bond between the positioning groove 9 and the positioning block 32.

[0032] Working method: When the tip 61 wears out after prolonged use, the finger is inserted into the finger slot 62 and rotated counterclockwise, which drives the mounting plate 6 and mounting post 7 to rotate counterclockwise as a whole. Through the thread transmission between the external thread 71 and the internal thread 51, the worn tip 61 can be removed. Then, the new tip 61 is installed on the internal thread 51 through the external thread 71, realizing replacement installation. This effectively improves the installability and replaceability between the telescopic aluminum tube body 1 and the tip 61 of the trekking pole, avoiding the waste of having to throw away the entire trekking pole and its telescopic aluminum tube body 1 and buy a new one.

[0033] Moreover, when the cane tip 61 is threaded onto the internal thread 51 via the external thread 71, the limiting ring 81 will be inserted into the limiting top groove 52 to achieve a longitudinal limiting and positioning effect. This avoids the relatively hard external thread 71 (made of relatively hard carbon tungsten steel) from causing pressure damage and deformation to the relatively soft internal thread 51 (made of relatively soft aluminum alloy), thereby ensuring the threaded connection effect between the internal thread 51 of the telescopic aluminum tube cane body 1 and the external thread 71 of the cane tip 61.

[0034] Additionally, after the cane handle 3 is bonded and fixed to the retractable aluminum tube cane body 1, refer to... Figure 1 and Figure 5 At this time, the positioning block 32 will be matched and inserted into the positioning groove 9, and the fixing block 2 will also be positioned and inserted into the matching fixing slot 4, which effectively improves the bonding stability of the installation structure between the cane handle 3 and the retractable aluminum tube cane body 1.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A retractable aluminum tube, comprising a retractable aluminum tube body (1), characterized in that: The retractable aluminum tube cane body (1) is composed of a first retractable aluminum tube (11), a second retractable aluminum tube (13), and a third retractable aluminum tube (15). A first locking sleeve (12) is provided between the first retractable aluminum tube (11) and the second retractable aluminum tube (13). A second locking sleeve (14) is provided between the second retractable aluminum tube (13) and the third retractable aluminum tube (15). A sleeve (5) is provided on the third retractable aluminum tube (15). An internal thread (51) and a limiting top groove (52) are provided on the sleeve (5). An installation plate (6) is provided on the sleeve (5). A cane tip (61) and a finger buckle groove (62) are provided on the installation plate (6). A connecting plate (31) is provided on the first retractable aluminum tube (11). A cane handle (3) is provided on the connecting plate (31). An installation post (7) is provided on the installation plate (6). An external thread (71) is provided on the installation post (7). The mounting plate (6) is provided with a dust cover (8) and a limiting ring (81), and the connecting plate (31) is provided with a positioning block (32) and a fixing slot (4). The first telescopic aluminum tube (11) is provided with a fixed insert (2), and the first telescopic aluminum tube (11) is provided with a positioning groove (9).

2. The expandable aluminum tube according to claim 1, characterized in that: The first telescopic aluminum tube (11) and the second telescopic aluminum tube (13) are slidably sleeved together, and the second telescopic aluminum tube (13) and the third telescopic aluminum tube (15) are slidably sleeved together.

3. The expandable aluminum tube according to claim 1, characterized in that: The sleeve (5) is fixedly installed on the left end face of the third telescopic aluminum tube (15). The sleeve (5) has a hollow cavity inside. The internal thread is located in the hollow cavity of the sleeve (5) and is threadedly connected to the external thread (71).

4. The expandable aluminum tube according to claim 1, characterized in that: The mounting plate (6) is a disc-shaped structure, the finger slots (62) are twelve arranged in a circle, the limiting ring (81) is inserted into the limiting top slot (52), and the dust cover (8) is an annular structure.

5. The expandable aluminum tube according to claim 1, characterized in that: The connecting plate (31) is located on the left end face of the handle (3), and the positioning block (32) is a regular hexagonal structure and is matched and inserted into the positioning groove (9).

6. The expandable aluminum tube according to claim 1, characterized in that: The fixed slot (4) is a rectangular groove and is located on the left end face of the connecting plate (31). The fixed plug (2) is a triangular structure and consists of four circumferentially arranged blocks.

7. The expandable aluminum tube according to claim 1, characterized in that: The slot (4) is coated with a first adhesive layer (41), and the positioning groove (9) is coated with a second adhesive layer (91).

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