Frosted aluminum alloy telescopic pipe

Abstract

The utility model discloses a frosted aluminum alloy telescopic pipe which comprises an outer pipe and an inner pipe penetrating through the outer pipe, the joint of the outer pipe and the inner pipe is connected with a connecting sleeve in a locking mode through a fixing piece, the fixing piece is composed of an outer threaded pipe and a telescopic pipe, the outer threaded pipe is fixedly connected with the outer portion of the end of the outer pipe, and the telescopic pipe is fixedly connected with the inner portion of the outer pipe. The contraction pipe extends out of a port of the outer pipe and is provided with a plurality of notch grooves in the circumferential direction, the inner pipe is sleeved with the connecting sleeve, the connecting sleeve is composed of an inner threaded pipe and a pressing cylinder, the inner threaded pipe is in threaded fit with the outer threaded pipe, and the pressing cylinder is gradually shrunk from one port, facing the inner threaded pipe, of the pressing cylinder to the other port. And a plurality of ribs in one-to-one correspondence with the notch grooves are arranged on the outer wall of the inner pipe. According to the telescopic pipe, when the pipe piece of the telescopic pipe is tightly pressed to be attached to the outer wall of the inner pipe, the ribs can be clamped and embedded in the notch grooves, so that the inner pipe is limited, the problem that the inner pipe deflects in the circumferential direction after being locked with the outer pipe is solved, the firmness is better when the inner pipe and the outer pipe are locked, and the telescopic pipe is safer to use.

Description

Technical Field

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

[0002] The aluminum alloy telescopic tube is a commonly used telescopic rod member in daily life. It is composed of multiple thin-walled aluminum alloy tubes sleeved with each other, can be telescopically adjusted in length, and is convenient for storage. It is often used in items such as trolley cases, selfie sticks, and mop rods.

[0003] At present, when the aluminum alloy telescopic tube applied to the mop rod needs to fix the telescopic length, it is generally locked and connected by two connecting parts screwed together. However, after the connecting parts are locked, since both the inner tube and the outer tube of the telescopic tube are smooth-surfaced rods, during daily use, circumferential deflection is likely to occur between the inner tube and the outer tube, and the firmness is not good, posing a safety hazard.

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

[0005] The purpose of the utility model is to provide a frosted aluminum alloy telescopic tube to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A frosted aluminum alloy telescopic tube includes an outer tube and an inner tube passing through the inside of the outer tube. The connection between the outer tube and the inner tube is locked and connected through a fixing part and a connecting sleeve. The fixing part consists of an external thread tube and a shrinkage tube. The external thread tube is fixedly connected to the outside of the end of the outer tube. The shrinkage tube extends out of the port of the outer tube and is provided with a plurality of notch grooves along the circumferential direction. The connecting sleeve is sleeved outside the inner tube, and the connecting sleeve consists of an internal thread tube and a pressing cylinder. The internal thread tube is in threaded cooperation with the external thread tube. One end port of the pressing cylinder gradually shrinks towards the other port. When the internal thread tube and the external thread tube are screwed tightly, the pressing cylinder squeezes the shrinkage tube to shrink and press the outer wall of the inner tube. A plurality of ribs corresponding to the notch grooves one by one are provided on the outer wall of the inner tube.

[0008] In a further embodiment, a plurality of strip grooves corresponding to the ribs one by one are provided on the inner wall of the outer tube, and the ribs are embedded in the strip grooves and slide.

[0009] In a further embodiment, the number of both the notch grooves and the ribs is set to three, and the width of the notch grooves is greater than the width of the ribs.

[0010] In a further embodiment, a convex ring is provided at one end of the external thread tube away from the shrinkage tube, and the protruding thickness of the convex ring is equal to the thickness of the internal thread tube.

[0011] In a further embodiment, a plurality of arc grooves are circumferentially arranged on the side wall of the inner tube located between adjacent rib strips, and the arc grooves are arranged at equal intervals along the axial direction of the inner tube.

[0012] In a further embodiment, a plurality of anti-slip strips are connected to the inner wall of one end of the shrinkage tube far from the external thread tube, and the anti-slip strips are arranged at equal intervals along the axial direction of the shrinkage tube.

[0013] In a further embodiment, the outer shape of the pressing cylinder adopts an external hexagonal structure.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, by providing protruding rib strips on the surface of the inner tube, when the tube segments of the shrinkage tube are pressed tightly against the outer wall of the inner tube, the rib strips can be clamped in the notch grooves, thereby using the tube segments of the shrinkage tube to limit the inner tube, effectively preventing the problem of circumferential deflection after it is locked with the outer tube, making the locking between the inner tube and the outer tube more firm and safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the present utility model after removing the connecting sleeve;

[0018] Figure 3 is a schematic structural diagram of the connecting sleeve of the present utility model;

[0019] Figure 4 is a schematic semi-sectional structural diagram of the present utility model when the fixing member is connected to the connecting sleeve;

[0020] Figure 5 is a schematic top view cross-sectional structural diagram of the connection between the outer tube and the inner tube of the present utility model;

[0021] Figure 6 is the present utility model Figure 4 partial enlarged structural diagram at A in.

[0022] In the figure: 1. Outer tube; 11. Groove; 2. Inner tube; 21. Rib strip; 22. Arc groove; 3. Fixing member; 31. External thread tube; 32. Shrinkage tube; 321. Notch groove; 33. Convex ring; 34. Anti-slip strip; 4. Connecting sleeve; 41. Internal thread tube; 42. Pressing cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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. Therefore, it should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0026] Please refer to Figures 1-4, A frosted aluminum alloy telescopic tube, including an outer tube 1 and an inner tube 2 passing through the inside of the outer tube 1. Specifically, during actual production, the surfaces of the outer tube 1 and the inner tube 2 can be sprayed with a frosted coating, and the frosted treatment forms a uniform and delicate frosted surface, which can enhance the aesthetic appearance and wear resistance. The connection between the outer tube 1 and the inner tube 2 is locked and connected through a fixing member 3 and a connecting sleeve 4. Among them, the fixing member 3 is fixedly installed with the outer tube 1, and the connecting sleeve 4 is movably sleeved with the inner tube 2. The fixing member 3 is composed of an external threaded tube 31 and a shrinkage tube 32. The external threaded tube 31 is fixedly connected to the outside of the end of the outer tube 1. The shrinkage tube 32 extends out of the port of the outer tube 1 and is provided with a plurality of notch grooves 321 along the circumferential direction. The notch grooves 321 divide the shrinkage tube 32 into several tube pieces. The connecting sleeve 4 is composed of an internal threaded tube 41 and a pressing cylinder 42. The internal threaded tube 41 is in threaded cooperation with the external threaded tube 31. One end of the pressing cylinder 42 facing the internal threaded tube 41 gradually narrows towards the other end. When the internal threaded tube 41 and the external threaded tube 31 are screwed tightly, as the inner diameter shape of the pressing cylinder 42 gradually squeezes the shrinkage tube 32 to shrink and press against the outer wall of the inner tube 2, the effect of locking the inner tube 2 is achieved. A plurality of ribs 21 corresponding to the notch grooves 321 one by one are provided on the outer wall of the inner tube 2. The ribs 21 protrude from the outer wall of the inner tube 2 and are parallel to the axial direction of the inner tube 2. When the tube pieces of the shrinkage tube 32 are pressed tightly against the outer wall of the inner tube 2, the ribs 21 can be embedded in the notch grooves 321, so as to limit the inner tube 2 by using the tube pieces of the shrinkage tube 32, effectively preventing the problem of circumferential deflection after it is locked with the outer tube 1.

[0027] Further, please refer to Figure 5 , a plurality of strip grooves 11 corresponding to the ribs 21 one by one are provided on the inner wall of the outer tube 1, and the ribs 21 are embedded in the strip grooves 11 and slide. Through the limitation of the ribs 21 and the strip grooves 11, the deflection of the inner tube 2 is further prevented.

[0028] Please refer to Figures 2-4 , the number of the notch grooves 321 and the ribs 21 are both set to three, and the width of the notch grooves 321 is greater than the width of the ribs 21, so that the ribs 21 can be well aligned with the notch grooves 321.

[0029] Please refer to Figures 2-4 , a convex ring 33 is provided at one end of the external threaded tube 31 away from the shrinkage tube 32, and the protruding thickness of the convex ring 33 is equal to the thickness of the internal threaded tube 41, and the convex ring 33 is used to limit the screwing-in degree of the internal threaded tube 41.

[0030] Please refer to Figures 1-4 and Figure 6, in order to further improve the locking effect, a plurality of arc grooves 22 are circumferentially arranged on the side wall of the inner tube 2 located between adjacent rib strips 21, and the arc grooves 22 are arranged at equal intervals along the axial direction of the inner tube 2. A plurality of anti-slip strips 34 are connected to the inner wall of one end of the shrinkage tube 32 far away from the external thread tube 31, and the anti-slip strips 34 are arranged at equal intervals along the axial direction of the shrinkage tube 32. The anti-slip strips 34 can increase the friction force. At the same time, when the anti-slip strips 34 are embedded in the arc grooves 22, the inner tube 2 can be further limited, and the firmness of the connection between the inner tube 2 and the outer tube 1 can be improved.

[0031] Please refer to Figure 1 and Figure 4 , in order to facilitate the rotation of the connecting sleeve 4, the outer shape of the pressing cylinder 42 adopts an external hexagonal structure, which is convenient for the user to hold the pressing cylinder 42 to apply force.

[0032] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0033] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A frosted aluminum alloy telescopic tube, comprising an outer tube (1) and an inner tube (2) penetrating through the outer tube (1), characterized in that: The connection between the outer tube (1) and the inner tube (2) is locked and connected through a fixing member (3) and a connecting sleeve (4). The fixing member (3) is composed of an external threaded tube (31) and a shrinkage tube (32). The external threaded tube (31) is fixedly connected to the outside of the end of the outer tube (1). The shrinkage tube (32) extends outside the port of the outer tube (1) and is provided with a plurality of notch grooves (321) along the circumferential direction. The connecting sleeve (4) is sleeved outside the inner tube (2), and the connecting sleeve (4) is composed of an internal threaded tube (41) and a pressing cylinder (42). The internal threaded tube (41) is in threaded cooperation with the external threaded tube (31). One port of the pressing cylinder (42) facing the internal threaded tube (41) gradually narrows towards the other port. When the internal threaded tube (41) and the external threaded tube (31) are screwed tightly, the pressing cylinder (42) squeezes the shrinkage tube (32) to shrink so as to press against the outer wall of the inner tube (2). A plurality of ribs (21) corresponding to the notch grooves (321) one by one are provided on the outer wall of the inner tube (2).

2. The frosted aluminum alloy telescopic tube according to claim 1, characterized in that: A plurality of strip grooves (11) corresponding to the ribs (21) one by one are provided on the inner wall of the outer tube (1), and the ribs (21) are embedded in the strip grooves (11) and slide therein.

3. A frosted aluminum alloy telescopic tube according to claim 1, characterized in that: The number of the notch grooves (321) and the ribs (21) is both set to three, and the width of the notch grooves (321) is greater than the width of the ribs (21).

4. A frosted aluminum alloy telescopic tube according to claim 1, characterized in that: A convex ring (33) is provided at one end of the external threaded tube (31) away from the shrinkage tube (32), and the protruding thickness of the convex ring (33) is equal to the thickness of the internal threaded tube (41).

5. A frosted aluminum alloy telescopic tube according to claim 1, characterized in that: A plurality of arc grooves (22) are provided on the side wall between adjacent ribs (21) outside the inner tube (2) along the circumferential direction, and the arc grooves (22) are arranged at equal intervals along the axial direction of the inner tube (2).

6. The frosted aluminum alloy telescopic tube according to claim 1, wherein: A plurality of anti-slip strips (34) are connected to the inner wall of one port of the shrinkage tube (32) away from the external threaded tube (31), and the anti-slip strips (34) are arranged at equal intervals along the axial direction of the shrinkage tube (32).

7. A frosted aluminum alloy telescopic tube according to claim 1, characterized in that: The outer shape of the pressing cylinder (42) adopts an external hexagonal structure.

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