Sliding type telescopic pipe

Abstract

The utility model discloses a sliding type telescopic pipe, which belongs to the technical field of telescopic pipes and comprises an inner pipe body, an outer pipe body and a sliding sleeve, the outer pipe body is arranged on the inner pipe body in a sleeving mode, a moving piece is arranged between the end of the inner pipe body and the outer pipe body, and the moving piece moves in the moving groove; and the sleeve is arranged on the moving part in a sleeving manner. When the telescopic pipe needs to stretch out and draw back, the sleeve is pushed, so that the limiting body is separated from the limiting groove, the moving block slides in the moving groove, the spherical limiting body rolls in the moving groove until the spherical limiting body rolls into the next limiting groove, length adjustment of the inner pipe and the outer pipe can be completed, and the telescopic function is achieved; abrasion is greatly reduced, the service life is prolonged, and the locking effect between the inner pipe and the outer pipe is improved in cooperation with the spring on the sleeve body.

Description

Technical Field

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

[0002] Expansion joints are a type of pipe device that can be stretched and adjusted in length and shape to adapt to different pipe layout requirements. They can still work stably in extreme environments such as high temperature, low temperature, high pressure, and low pressure.

[0003] A sliding telescopic tube typically consists of an outer tube and an inner tube, which are fitted together by a sleeve. The inner tube slides along the axial direction inside the outer tube to achieve the telescopic function. To guide the sliding direction of the inner tube and limit its radial displacement, a slider structure is usually set between the outer tube and the inner tube; the slider is usually installed on the inner wall of the outer tube or the outer wall of the inner tube.

[0004] Over time, the slider will wear down the inner tube, increasing the clearance between the outer and inner tubes. When the clearance is too large, the latch cannot provide sufficient friction or latching force to properly guide the sliding of the inner tube, thus preventing it from locking. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that in current sliding telescopic tubes, the slider wears on the inner tube after long-term use, which increases the gap between the outer and inner tubes. When the gap is too large, the latch cannot provide sufficient friction or latching force, and cannot properly guide the sliding of the inner tube, thus resulting in the inability to lock. Therefore, a sliding telescopic tube is proposed.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a sliding telescopic tube, comprising:

[0007] The inner tube body is equipped with a movable groove.

[0008] An outer tube body is fitted onto the inner tube body, and a movable component is provided between the end of the inner tube body and the outer tube body, the movable component moving within the movable groove;

[0009] And a sleeve, which is fitted onto the moving part.

[0010] As a further description of the above technical solution:

[0011] The movable component includes a sleeve and a limiting body. The sleeve has a receiving hole, and the limiting body is located inside the receiving hole.

[0012] As a further description of the above technical solution:

[0013] The sleeve is provided with a movable block, which is movably connected within the movable slot.

[0014] As a further description of the above technical solution:

[0015] The bottom inner wall of the movable groove is provided with a number of downwardly recessed limiting grooves. The limiting body is a rolling ball, which is rotatably connected to the movable groove and is limited within the limiting groove.

[0016] As a further description of the above technical solution:

[0017] The inner tube body is provided with a number of snap-fit ​​grooves, and the sleeve body is provided with a number of snap-fit ​​blocks, with the snap-fit ​​blocks correspondingly snapping into the snap-fit ​​grooves.

[0018] As a further description of the above technical solution:

[0019] The sleeve has several slots and several connecting blocks. The spring is sleeved on the sleeve and located outside the slots. The sleeve has a limit block and several abutting blocks. The abutting blocks and the connecting blocks abut against each other in a staggered manner.

[0020] As a further description of the above technical solution:

[0021] The sleeve is also provided with an anti-rotation body, and the limiting block is engaged with the anti-rotation body.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, a movable groove is set on the inner tube body, and several hemispherical limiting grooves are set at the bottom of the movable groove. A movable component is set between the outer tube body and the inner tube body. The movable component includes a sleeve body and a limiting body. The limiting body is a rolling ball. Several slots are set on the sleeve body. A spring is sleeved on the sleeve body and located outside the slots. When extension and retraction are required, the sleeve is pushed, so that the limiting body disengages from the limiting groove, and the movable block slides in the movable groove. The spherical limiting body rolls in the movable groove until it rolls into the next limiting groove, thus completing the length adjustment of the inner tube and the outer tube and realizing the extension and retraction function. Compared with the traditional slider, the spherical limiting body greatly reduces wear and improves service life.

[0024] 2. In this utility model, by setting several slots on the sleeve, the spring is sleeved on the sleeve and located outside the slot, so that when the limiting body rolls in the moving slot, the spring will expand to the circumference to ensure that it can slide smoothly. When it moves into the limiting slot and locks, the spring will retract, increasing the stability of the connection between the inner tube and the outer tube and avoiding locking failure. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 Disassembly of a sliding telescopic tube Figure 1 .

[0027] Figure 2 A cross-sectional view of a sliding telescopic tube. Figure 1 .

[0028] Figure 3 Disassembly of a sliding telescopic tube Figure 2 .

[0029] Figure 4 Disassembly of a sliding telescopic tube Figure 3 .

[0030] Figure 5 A cross-sectional view of a sliding telescopic tube. Figure 2 .

[0031] Figure 6 for Figure 2 Enlarged view of point A in the middle.

[0032] Legend:

[0033] 1-Inner tube body; 2-Moving groove; 3-Outer tube body; 4-Moving component; 41-Sleeve body; 42-Limiting body; 5-Sleeve; 6-Accommodating hole; 7-Moving block; 8-Limiting groove; 9-Snap-fit ​​groove; 10-Snap-fit ​​block; 11-Slot; 12-Connecting block; 13-Limiting block; 14-Abutting block; 15-Anti-rotation body; 16-Spring. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of this utility model, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Please see Figure 1-6 This utility model provides a technical solution: a sliding telescopic tube, comprising:

[0041] The inner tube 1 is provided with a movable groove 2;

[0042] An outer tube 3 is sleeved on the inner tube 1, and a movable part 4 is provided between the end of the inner tube 1 and the outer tube 3. The movable part 4 moves within the movable groove 2.

[0043] And sleeve 5, which is sleeved on the moving part 4.

[0044] The movable component 4 includes a sleeve 41 and a limiting body 42. The sleeve 41 is provided with a receiving hole 6, and the limiting body 42 is located inside the receiving hole 6.

[0045] The sleeve 41 is provided with a movable block 7, which is movably connected to the movable groove 2.

[0046] The bottom inner wall of the movable groove 2 is provided with a plurality of downwardly recessed limiting grooves 8. The limiting body 42 is a rolling ball, which is rotatably connected to the movable groove 2 and is limited within the limiting grooves 8.

[0047] The inner tube 1 is provided with a plurality of snap-fit ​​grooves 9, and the sleeve 41 is provided with a plurality of snap-fit ​​blocks 10, and the plurality of snap-fit ​​blocks 10 are snapped into the plurality of snap-fit ​​grooves 9.

[0048] The sleeve 41 is provided with a plurality of slots 11 and a plurality of connecting blocks 12. The spring 16 is sleeved on the sleeve 41 and located outside the slots 11. The sleeve 5 is provided with a limit block 13 and a plurality of abutment blocks 14, and the plurality of abutment blocks 14 and the plurality of connecting blocks 12 abut against each other in a staggered manner. This improves the stability of the connection between the sleeve and the sleeve body.

[0049] The sleeve 41 is also provided with an anti-rotation body 15, and the limiting block 13 is engaged with the anti-rotation body 15. This prevents relative displacement between the sleeve and the sleeve body during movement.

[0050] Spring 16 passes through connecting block 12 and anti-rotation body 15. This ensures the stability of the spring connection to the sleeve.

[0051] Working principle: A movable groove is set on the inner tube, and several hemispherical limiting grooves are set at the bottom of the movable groove. A movable component is set between the outer tube and the inner tube. The movable component includes a sleeve and a limiting body. The limiting body is a rolling ball. Several slots are set on the sleeve. A spring is sleeved on the sleeve and located outside the slots. When extension or retraction is required, the sleeve is pushed, so that the limiting body disengages from the limiting groove, and the movable block slides in the movable groove. The spherical limiting body rolls in the movable groove until it rolls into the next limiting groove, thus completing the length adjustment of the inner and outer tubes and realizing the extension or retraction function. Compared with the traditional slider, the spherical limiting body greatly reduces wear and increases service life.

[0052] 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 sliding telescopic tube, characterized in that, include: The inner tube body is equipped with a movable groove. An outer tube body is fitted onto the inner tube body, and a movable component is provided between the end of the inner tube body and the outer tube body, the movable component moving within the movable groove; And a sleeve, which is fitted onto the moving part.

2. The sliding telescopic tube according to claim 1, characterized in that, The movable component includes a sleeve and a limiting body. The sleeve has a receiving hole, and the limiting body is located inside the receiving hole.

3. A sliding telescopic tube according to claim 2, characterized in that, The sleeve is provided with a movable block, which is movably connected within the movable slot.

4. A sliding telescopic tube according to claim 3, characterized in that, The bottom inner wall of the movable groove is provided with a number of downwardly recessed limiting grooves. The limiting body is a rolling ball, which is rotatably connected to the movable groove and is limited within the limiting groove.

5. A sliding telescopic tube according to claim 2, characterized in that, The inner tube body is provided with a number of snap-fit ​​grooves, and the sleeve body is provided with a number of snap-fit ​​blocks, with the snap-fit ​​blocks correspondingly snapping into the snap-fit ​​grooves.

6. A sliding telescopic tube according to claim 2, characterized in that, The sleeve has several slots and several connecting blocks. The spring is sleeved on the sleeve and located outside the slots. The sleeve has a limit block and several abutting blocks. The abutting blocks and the connecting blocks abut against each other in a staggered manner.

7. A sliding telescopic tube according to claim 6, characterized in that, The sleeve is also provided with an anti-rotation body, and the limiting block is engaged with the anti-rotation body.

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