Aluminum alloy telescopic pipe

Abstract

The utility model discloses an aluminum alloy telescopic pipe which comprises an outer sleeve and an inner core pipe which are in telescopic sleeved connection with each other, a plurality of clamping holes are formed in the outer side wall of the outer sleeve at equal intervals in the length direction, a clamping block is movably installed on the side wall of the end, stretching into the outer sleeve, of the inner core pipe, and an extrusion block is movably installed on the side wall of the other end of the inner core pipe. The ends, extending into the inner core pipe, of the extrusion blocks and the clamping blocks are connected with n-shaped frames, racks are connected into the n-shaped frames, the edges of the racks are connected with gears in an engaged mode, the two gears are connected through a connecting rod, and the ends of the n-shaped frames are movably connected with the inner wall of the inner core pipe in a telescopic mode through springs and guide rods. When the telescopic length between the outer sleeve and the inner core pipe needs to be adjusted, the inner core pipe is pulled to move and the extrusion block is pressed at the same time, the locking state of the clamping block can be relieved, the whole telescopic adjusting process can be operated with one hand, and the telescopic adjusting device is more convenient and faster to use.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy telescopic tubes, in particular to an aluminum alloy telescopic tube. Background Art

[0002] The aluminum alloy telescopic tube is a telescopic rod commonly used in daily life. It is made of multiple thin-walled aluminum alloy tubes that are socketed together. It can be telescoped to adjust the length and is convenient for storage. It is often used in trolley cases, selfie sticks and other items.

[0003] When the current aluminum alloy telescopic tube needs to fix the telescopic length, a hole is generally opened on the outer tube, and an elastically retractable clamp is installed on the inner tube. The user squeezes the clamp to extend and retract the clamp at different positions of the hole, thereby locking the required telescopic length. However, in actual use, when operating the telescopic operation, the user needs to squeeze the clamp with one hand and use the other hand to pull the inner tube to move in order to control the telescopic adjustment of the inner and outer tubes. This takes up space for both hands during operation, is inconvenient to use, and is difficult to achieve single-handed adjustment operation. There is room for improvement.

[0004] Therefore, we propose an aluminum alloy telescopic tube to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an aluminum alloy telescopic tube to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The invention discloses an aluminum alloy telescopic tube, comprising an outer tube and an inner tube which are telescopically sleeved with each other. A plurality of clamping holes are equidistantly provided on the outer side wall of the outer tube along the length direction. A clamping block is movably installed on the side wall of one end of the inner tube which extends into the outer tube. The clamping block is used to be clamped into the clamping hole to lock the telescopic length of the outer tube and the inner tube. An extrusion block is movably installed on the side wall of the other end of the inner tube. The extrusion block and the end of the clamping block which extends into the inner tube are both connected to a profile frame. A rack is connected inside the profile frame. A gear is meshedly connected to the edge of the rack. The two gears are connected by a connecting rod. The end of the profile frame is telescopically movably connected to the inner wall of the inner tube by a spring and a guide rod.

[0008] In a further embodiment, a slider is fixed on the outer wall of the inner core tube, and the slider is slidably connected to the outer sleeve.

[0009] In a further embodiment, the inner walls of the block and the slider are both rotatably inlaid with balls, and the inner wall of the outer sleeve is provided with an arc-shaped sliding groove matching the balls.

[0010] In a further embodiment, the top end of the outer sleeve is connected to an end cover 2 by bolts.

[0011] In a further embodiment, the upper and lower ends of the inner core tube are respectively connected with end covers 1 by bolts.

[0012] In a further embodiment, one end of the gear away from the connecting rod is rotatably connected to a sleeve, and an insert rod matched with the sleeve is connected to the inner wall of the end cover.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model links two racks by means of a gear and a connecting rod, so that the two racks can control the synchronous movement of the clamping block and the extruding block. Since the extruding block is arranged on the side wall of one end of the inner core tube extending out of the outer sleeve, when it is necessary to adjust the telescopic length between the outer sleeve and the inner core tube, it is only necessary to press the extruding block while pulling the inner core tube to move, so that the locking state of the clamping block can be released. The entire telescopic adjustment process can be realized by one-handed operation, which is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the longitudinal section structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the utility model in cross section when viewed from above;

[0018] Figure 4 It is a longitudinally cutaway structural schematic diagram of the utility model when the gear and the end cover are connected.

[0019] In the figure: 1, outer sleeve; 2, inner core tube; 21, end cover one; 211, plug rod; 3, clamping block; 4, extrusion block; 5, profile frame; 6, rack; 7, gear; 71, sleeve; 8, connecting rod; 9, spring; 10, guide rod; 11, clamping hole; 12, end cover two; 13, slider; 14, ball; 15, slide groove. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-2, an aluminum alloy telescopic tube, comprising an outer sleeve 1 and an inner core tube 2 which are telescopically sleeved with each other, wherein the inner core tube 2 passes through the interior of the outer sleeve 1, and a plurality of clamping holes 11 are equidistantly provided on the outer wall of the outer sleeve 1 along the length direction, and a clamping block 3 is movably installed on the side wall of one end of the inner core tube 2 extending into the outer sleeve 1, and the clamping block 3 can be telescopically moved relative to the inner core tube 2, and is used to be clamped into the clamping hole 11 to lock the telescopic length of the outer sleeve 1 and the inner core tube 2. In order to facilitate the user to control the extension and contraction of the clamping block 3, an extrusion block 4 is movably installed on the side wall of the end of the inner core tube 2 extending out of the outer sleeve 1, and the extrusion block 4 can be telescopically moved relative to the inner core tube 2, and the extrusion block 4 and the end of the clamping block 3 extending into the inner core tube 2 are both connected with a profile frame 5, and a rack 6 is connected inside the profile frame 5, and a gear 7 is meshed and connected to the edge of the rack 6, and the two gears 7 are connected by a connecting rod 8. When the user squeezes the squeezing block 4, the squeezing block 4 drives the rack 6 to move through the mold frame 5, and the rack 6 meshes with the gear 7, thereby driving the gear 7 to rotate clockwise. The gear 7 drives another gear 7 below to rotate synchronously through the connecting rod 8, and then the gear 7 below drives the rack 6 to move, thereby driving the clamping block 3 to retract, so that it disengages from the clamping hole 11 and contacts the locked state. At this time, the inner core tube 2 is pulled to the required length, and then the squeezing block 4 is released. In order to improve the stability of the mold frame 5 during movement, a spring 9 is connected between the end of the mold frame 5 and the inner wall of the inner core tube 2, and a guide rod 10 is passed through the inside of the spring 9. One end of the guide rod 10 is fixed to the inner wall of the inner core tube 2, and the other end passes through the inside of the mold frame 5 to slide and retract, so that the elastic effect of the spring 9 can help the squeezed squeezing block 4 to reset.

[0024] See also Figure 3 In order to improve the stability of the inner core tube 2 and the outer sleeve 1 during telescoping, a slider 13 is fixed on the outer wall of the inner core tube 2, and the slider 13 is slidably connected to the outer sleeve 1. The inner walls of the block 3 and the slider 13 are rotatably inlaid with balls 14, and an arc-shaped slide groove 15 matching the balls 14 is opened on the inner wall of the outer sleeve 1. The balls 14 roll along the arc-shaped slide groove 15, which can not only limit the inner core tube 2 and reduce its shaking, but also reduce the friction resistance during telescoping, making the telescoping smoother and more labor-saving.

[0025] See also Figure 2-4In order to facilitate the assembly of the entire telescopic tube, an end cover 2 12 is connected to the top of the outer sleeve 1 by bolts, so that the end cover 2 12 can be disassembled relative to the outer sleeve 1, which is convenient for inserting the inner core tube 2. At the same time, the upper and lower ends of the inner core tube 2 are respectively connected to the end cover 1 21 by bolts, so that after the end cover 1 21 is removed, the two ends of the inner core tube 2 are open to each other, which is convenient for installing parts inside the inner core tube 2. In order to facilitate the positioning and connection of the gear 7, a sleeve 71 is rotatably connected to one end of the gear 7 away from the connecting rod 8. A socket is provided inside the sleeve 71, and a plug rod 211 matched with the sleeve 71 is connected to the inner wall of the end cover 1 21, so as to facilitate the limited installation of the gear 7 and facilitate assembly.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An aluminum alloy telescopic tube, comprising an outer sleeve (1) and an inner core tube (2) which are telescopically connected to each other, characterized in that: A plurality of clamping holes (11) are equidistantly provided on the outer wall of the outer sleeve (1) along the length direction; a clamping block (3) is movably mounted on the side wall of one end of the inner core tube (2) extending into the outer sleeve (1); the clamping block (3) is used to be clamped into the clamping hole (11) to lock the telescopic length of the outer sleeve (1) and the inner core tube (2); an extrusion block (4) is movably mounted on the side wall of the other end of the inner core tube (2); and the extrusion block (4) and the end of the clamping block (3) extending into the inner core tube (2) are both connected to a profile frame (5); a rack (6) is connected inside the profile frame (5); a gear (7) is meshedly connected to the edge of the rack (6), and the two gears (7) are connected via a connecting rod (8); and an end of the profile frame (5) is telescopically movably connected to the inner wall of the inner core tube (2) via a spring (9) and a guide rod (10).

2. The aluminum alloy telescopic tube according to claim 1, characterized in that: A sliding block (13) is also fixed on the outer wall of the inner core tube (2), and the sliding block (13) is slidably connected to the outer sleeve (1).

3. The aluminum alloy telescopic tube according to claim 2, characterized in that: The inner walls of the clamping block (3) and the sliding block (13) are both rotatably inlaid with balls (14), and the inner wall of the outer sleeve (1) is provided with an arc-shaped sliding groove (15) matching the balls (14).

4. The aluminum alloy telescopic tube according to claim 1, characterized in that: The top end of the outer sleeve (1) is connected to an end cover 2 (12) via bolts.

5. The aluminum alloy telescopic tube according to claim 1, characterized in that: The upper and lower ends of the inner core tube (2) are respectively connected to end covers (21) via bolts.

6. The aluminum alloy telescopic tube according to claim 5, characterized in that: One end of the gear (7) away from the connecting rod (8) is rotatably connected to a sleeve (71), and an insertion rod (211) matched with and plugged into the sleeve (71) is connected to the inner wall of the first end cover (21).

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