Directional telescopic assembly with anti-ejection structure

Abstract

The directional telescopic assembly comprises an outer pipe and a connecting base, the outer pipe and the connecting base are connected through a multi-stage pipe, the multi-stage pipe is composed of a plurality of inner pipes which are connected in a sleeved mode end to end, the inner diameter values of the inner pipes are sequentially reduced according to arithmetic progression, the outer wall of one end of each inner pipe is sleeved with an outer ring buckle, and the outer ring buckle is connected with the outer wall of the other end of each inner pipe. The side wall of one end of the outer ring buckle is bent inwards to form a blocking piece, a guide strip protruding inwards is arranged on the inner wall of the inner ring buckle, a guide groove distributed in the axial direction of the inner pipe is formed in the outer wall of the inner pipe, and the guide groove is matched with the guide strip in a guiding mode. The telescopic pipe can be stably and directionally stretched out and drawn back, the outer ring buckle is provided with the blocking piece, the inner pipe at the bottom which rises randomly can be blocked, the inner pipe is prevented from being ejected out to be separated, and stability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of unpowered telescopic devices, in particular to a directional telescopic component with an anti-ejection structure. Background Art

[0002] A track inspection robot is disclosed in a Chinese patent application document with application number: 202420570713.0, including a robot suspended and walking on a track; the robot includes a shell, in which a walking mechanism and a camera mechanism are assembled and connected; the walking mechanism includes a suspended walking component, and the track inspection robot also includes a pulling belt mechanism for pulling the camera mechanism... The pulling belt mechanism also includes a multi-stage telescopic cylinder and a belt cylinder fixedly assembled at the bottom position of the frame, the lower end of the multi-stage telescopic cylinder is a telescopic part, the telescopic part is fixedly connected to the camera mechanism, the pulling belt passes through the belt cylinder and is fixed to the camera mechanism, and the camera mechanism can be flexibly and smoothly adjusted.

[0003] The directional telescopic assembly with an anti-ejection structure proposed in this application is the multi-stage telescopic cylinder in the above patent application document. When working, the multi-stage telescopic cylinder is retracted by lifting the camera mechanism through the pull belt. Because the inner tube of each level in the multi-stage telescopic cylinder rises randomly, there is a risk of the inner tube being ejected and detached. Based on this, the inventor modified the existing multi-stage telescopic cylinder and proposed a directional telescopic assembly with an anti-ejection structure. Utility Model Content

[0004] The purpose of the utility model is to provide a directional telescopic component with an anti-ejection structure, which can stably directional telescope, and a blocking piece is arranged on the outer ring buckle to block the randomly rising bottom inner tube to prevent it from being ejected and detached, and has good stability, thus solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a directional telescopic component with an anti-ejection structure, comprising an outer tube and a connecting seat, wherein the outer tube and the connecting seat are connected via a multi-stage tube, wherein the multi-stage tube is composed of a plurality of inner tubes which are sleeved end to end, wherein the inner diameter values ​​of the plurality of inner tubes are sequentially decreased according to an arithmetic progression, an outer ring buckle is sleeved on the outer wall at one end of the inner tube, and an inner ring buckle is nested on the other end, a side wall at one end of the outer ring buckle is bent inwardly to form a baffle, an inner wall of the inner ring buckle is provided with an inwardly protruding guide strip, and a guide groove distributed along its axial direction is provided on the outer wall of the inner tube, wherein the guide groove and the guide strip are guided and matched.

[0006] Preferably, assembly holes are evenly opened at both ends of the inner tube along its circumference, inner convex pins adapted to the assembly holes are provided on the inner wall of the outer ring buckle, and outer convex pins adapted to the assembly holes are fixed on the outer wall of the inner ring buckle.

[0007] Preferably, a positioning block is disposed on the inner wall of the outer ring buckle and is engaged with the guide groove.

[0008] Preferably, the outer ring buckle and the inner ring buckle are both provided with grooves at one end away from each other for increasing assembly elasticity.

[0009] Preferably, flange rings are respectively fixedly provided at one end of the outer tube and the connecting seat extending toward the circumferential outer edge thereof, and mounting holes are evenly provided on the flange rings.

[0010] Preferably, fixing holes are evenly formed on the connecting seat, and the fixing holes correspond to the assembly holes on the inner tube.

[0011] Preferably, the guide strip and the guide groove are fitted and matched, and the thickness of the guide strip exceeds the depth of the guide groove.

[0012] Preferably, the inner ring buckle is nested and installed inside the bottom of the outer tube.

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

[0014] The utility model provides a guide groove along the axial direction of the outer wall of the inner tube, and provides assembly holes along the circumferential direction of the two ends thereof. During assembly, the outer ring buckle is sleeved on the outer wall of the top of the inner tube, and the inner ring buckle is embedded in the bottom of the inner tube. The matching structure of the guide strip and the guide groove is provided, so that the device can be directional and telescopic, and is difficult to rotate. In addition, the contact surface between two adjacent inner tubes is small, the friction is small, and the telescopic and retracting are smooth. The outer ring buckle can be provided to prevent the inner tube from falling off downwards. A blocking sheet is provided on the outer ring buckle to block the inner tube that rises randomly at the bottom to prevent it from being ejected and falling off. The structure is simple and the stability in use is good. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0017] Figure 3 It is a schematic diagram of the assembly structure of the inner tube, outer ring buckle and inner ring buckle of the utility model;

[0018] Figure 4 This is a schematic diagram of the connecting seat, outer ring buckle and inner ring buckle of the utility model from a first perspective;

[0019] Figure 5 This is a schematic diagram from a second perspective of the connecting seat, outer ring buckle and inner ring buckle of the utility model.

[0020] In the figure: 1, outer tube; 2, connecting seat; 3, inner tube; 31, guide groove; 4, outer ring buckle; 41, baffle; 42, inner convex pin; 5, inner ring buckle; 51, outer convex pin; 6, strip groove; 7, guide strip. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figures 1 to 5 The utility model provides a technical solution: a directional telescopic component with an anti-ejection structure, comprising an outer tube 1 and a connecting seat 2, the outer tube 1 and the connecting seat 2 are connected by a multistage tube, the multistage tube is composed of a plurality of inner tubes 3 connected end to end, the outer tube 1, the connecting seat 2 and the multistage tube are all made of aluminum alloy, the inner diameter values ​​of the plurality of inner tubes 3 are successively reduced according to an arithmetic progression, in the present application, it can be set that the multistage tube is composed of 6 inner tubes 3, which are named from top to bottom: the first inner tube 3, the second inner tube 3, the third inner tube 3, the fourth inner tube 3, the fifth inner tube 3, and the sixth inner tube 3, wherein the top of the sixth inner tube 3 is sleeved inside the fifth inner tube 3, the top of the fifth inner tube 3 is sleeved inside the fourth inner tube 3, the top of the fourth inner tube 3 is sleeved inside the third inner tube 3, the top of the third inner tube 3 is sleeved inside the second inner tube 3, and the top of the second inner tube 3 is sleeved inside the first inner tube 3 (such as Figure 1 shown).

[0023] like Figure 3 As shown, an outer ring buckle 4 is sleeved on the outer wall of one end of the inner tube 3, and an inner ring buckle 5 is nested inside the other end.

[0024] like Figure 1 and Figure 5 As shown, the side wall at one end of the outer ring buckle 4 is bent inward to form a baffle 41. The baffle 41 is fan-shaped, has a certain thickness, good strength, and is not easy to break. When the device contracts, it can block the randomly rising bottom inner tube 3 to prevent it from rising and detaching. At the same time, the baffle 41 also has a certain elasticity to block and buffer.

[0025] like Figure 3 and Figure 5 As shown, the inner wall of the inner ring buckle 5 is provided with a guide strip 7 protruding inward, and the outer wall of the inner tube 3 is provided with a guide groove 31 distributed along its axial direction. The guide groove 31 and the guide strip 7 are guided and matched, and the inner ring buckle 5 is nested and installed inside the inner tube 3. Through the above structure, a guided telescopic connection between two adjacent inner tubes 3 is realized.

[0026] Assembly holes are evenly opened at both ends of the inner tube 3 along its circumference, and an inner convex pin 42 adapted to the assembly hole is provided on the inner wall of the outer ring buckle 4, and an outer convex pin 51 adapted to the assembly hole is fixed on the outer wall of the inner ring buckle 5. During assembly, the outer ring buckle 4 is put on the outer wall of the top of the inner tube 3, so that the inner convex pin 42 is inserted into the assembly hole on the inner tube 3, and the inner ring buckle 5 is embedded and installed inside the bottom of the inner tube 3, so that the outer convex pin 51 is inserted into the assembly hole on the inner tube 3.

[0027] like Figure 4 As shown, the outer ring buckle 4 and the inner ring buckle 5 are provided with a groove 6 at one end away from each other to increase the assembly elasticity. The groove 6 makes it easy for the outer ring buckle 4 and the inner ring buckle 5 to deform, making it convenient to assemble and install them on the inner tube 3.

[0028] like Figure 1 and Figure 4 As shown, the outer tube 1 and the connecting seat 2 are respectively fixed with flange rings extending toward the outer circumferential edge thereof from one end, and mounting holes are evenly provided on the flange rings. The above structure is designed so that both ends of the device can be connected to external equipment by bolts.

[0029] like Figure 1 As shown, fixing holes are evenly opened on the connecting seat 2, and the fixing holes correspond to the assembly holes on the inner tube 3 one by one. In this device, the inner wall of the sixth inner tube 3 is not equipped with an inner ring buckle 5, and the connecting seat 2 and the sixth inner tube 3 are fixed together by bolts passing through the fixing holes and the corresponding assembly holes.

[0030] The guide strip 7 and the guide groove 31 are fitted and matched, so that the multi-stage tube can be directional and retracted, not easy to rotate, and has good stability. The thickness of the guide strip 7 exceeds the depth of the guide groove 31. Through such a design, there is a certain gap between the inner wall surface of the inner tube 3 at the top and the outer wall surface of the inner tube 3 at the bottom, so that the friction is small and the retraction is smooth.

[0031] An inner ring buckle 5 is nested inside the bottom of the outer tube 1, and a guided sliding connection is achieved between the outer tube 1 and the multi-stage tube through a guide strip 7 on the inner wall of the inner ring buckle 5 and a guide groove 31 on the first inner tube 3.

[0032] like Figure 3-Figure 5 As shown, in order to increase the stability of assembly, a protruding clamping strip is further provided on the inner wall of the outer ring buckle 4 , and during assembly, the clamping strip is embedded in the guide groove 31 .

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A directional telescopic assembly with an anti-ejection structure, comprising an outer tube (1) and a connecting seat (2), wherein the outer tube (1) and the connecting seat (2) are connected via a multi-stage tube, wherein the multi-stage tube is composed of a plurality of inner tubes (3) connected end to end, and wherein: The inner diameters of the plurality of inner tubes (3) decrease in sequence according to an arithmetic progression; an outer ring buckle (4) is sleeved on the outer wall of one end of the inner tube (3), and an inner ring buckle (5) is nested in the other end; a side wall of one end of the outer ring buckle (4) is bent inwardly to form a blocking sheet (41); an inner wall of the inner ring buckle (5) is provided with an inwardly protruding guide strip (7); an outer wall of the inner tube (3) is provided with a guide groove (31) distributed along its axial direction; the guide groove (31) and the guide strip (7) are guided and matched.

2. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The inner tube (3) has assembly holes evenly formed at both ends along its circumference, the inner wall of the outer ring buckle (4) is provided with an inner convex pin (42) adapted to the assembly hole, and the outer wall of the inner ring buckle (5) is fixed with an outer convex pin (51) adapted to the assembly hole.

3. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The inner wall of the outer ring buckle (4) is provided with a positioning block which is engaged and matched with the guide groove (31).

4. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The outer ring buckle (4) and the inner ring buckle (5) are both provided with grooves (6) at the ends away from each other for increasing assembly elasticity.

5. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The outer tube (1) and the connecting seat (2) are each provided with a flange ring extending and fixed to the outer circumferential edge thereof from one end thereof, and the flange ring is evenly provided with mounting holes.

6. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The connection seat (2) is evenly provided with fixing holes, and the fixing holes correspond to the assembly holes on the inner tube (3).

7. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The guide strip (7) and the guide groove (31) are fitted and matched, and the thickness of the guide strip (7) exceeds the depth of the guide groove (31).

8. The directional telescopic assembly with an anti-ejection structure according to claim 1, characterized in that: The inner ring buckle (5) is nested and installed inside the bottom of the outer tube (1).

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