CN221322981U - Telescopic rod - Google Patents

Abstract

The utility model discloses a telescopic rod which comprises an outer pipe and an inner pipe, wherein the outer pipe and/or the inner pipe is/are at least partially an elbow pipe. The outer tube is sleeved on the outer side of the inner tube, and a limiting mechanism is arranged between the outer tube and the inner tube. The limiting mechanism comprises a locking block with a hollow inner part and a limiting block arranged at one end of the inner pipe. The stopper is all arranged in the outer tube inside, and the outside of outer tube is located to the locking piece cover and is fixed with the outer tube, and the one end of locking piece inwards buckles to form spacing briquetting, and spacing briquetting is located the top of outer tube and is used for spacing the motion stroke of stopper. Therefore, after the inner tube is installed with the limiting block, one end of the inner tube with the limiting block is inserted into the outer tube, and finally the locking block is sleeved outside the outer tube and fixed with the outer tube, so that the outer tube and the inner tube can be installed.

Description

Telescopic rod

Technical Field

The utility model relates to the technical field of connecting pipes, in particular to a telescopic rod.

Background

As is well known, the telescopic rod is generally composed of a plurality of sleeves, wherein a large sleeve is sleeved on the outer side of a small sleeve, and a limiting mechanism is arranged at one end of the large sleeve and one end of the small sleeve so as to lock the large sleeve and the small sleeve by using the limiting mechanism when the large sleeve and the small sleeve stretch out and draw back to the longest position, thereby preventing the large sleeve and the small sleeve from shortening. At present, the existing limiting mechanism generally comprises a limiting block sleeved on the outer side of the bottom of a small sleeve and a stop block arranged at one end of the large sleeve, wherein protruding blocks are arranged on two sides of the stop block, clamping holes are formed in two sides of the large sleeve, which are close to one end, of the large sleeve, the stop block is arranged on the inner side of the large sleeve, the stop block and the large sleeve are arranged in the clamping holes by the protruding blocks, and in this state, the small sleeve with the limiting block can penetrate from one end of the large sleeve without the stop block and penetrate from one end of the stop block, so that the large sleeve and the small sleeve are assembled.

However, the above-mentioned mode is limited to the case that big sleeve pipe and little sleeve pipe are the straight tube, to the sleeve pipe of buckling, then need insert big intraductal with the little sleeve pipe that has the stopper earlier, install the dog, at this moment, the dog needs to extrude the clearance between little sleeve pipe and the big sleeve pipe and get into, because the dog utilizes lug and buckle joint to fix, this mode, damages the dog easily, and even if the installation is successful, also influences the stability of dog installation easily. If the two sleeves are firstly installed and then the sleeve needing to be bent is bent, paint after the sleeve is bent is easy to fall off; if paint is sprayed again later, the stop block and the limiting block are made of plastic materials and have low temperature resistance and can not be baked, and the limiting mechanism is not suitable for assembling the sleeve with the bending.

Disclosure of utility model

The utility model mainly aims to provide a telescopic rod, which is used for solving the problem that a locking assembly on the existing telescopic rod is not suitable for sleeve assembly with bending.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

The telescopic rod comprises an outer pipe and an inner pipe, wherein at least part of the outer pipe and/or the inner pipe is an elbow, the outer pipe is sleeved on the outer side of the inner pipe, and a limiting mechanism is arranged between the outer pipe and the inner pipe;

The limit mechanism comprises: the inner part is a hollow locking block and a limiting block arranged at one end of the inner pipe; the limiting block is arranged inside the outer tube, the locking block is sleeved outside the outer tube and is fixed with the outer tube, one end of the locking block is inwards bent to form a limiting pressing block, and the limiting pressing block is located at the top of the outer tube and used for limiting the movement stroke of the limiting block.

Further, the stop mechanism further comprises a stop block which is partially arranged in the outer tube and used for limiting the movement stroke of the stop block, the stop block is hollow, one end of the stop block is outwards bent to form a limiting surrounding edge, the stop block is partially arranged between the outer tube and the inner tube, and the limiting surrounding edge is positioned between one end face of the outer tube and the limiting pressing block.

Further, a first joint structure is arranged between the outer tube and the locking block, and the first joint structure comprises a first bayonet and a first clamping block arranged in the first bayonet;

The first bayonet is arranged on the outer side wall of the outer tube, and the first clamping block is arranged on the inner side wall of the locking block; or the first clamping block is arranged on the outer side wall of the outer tube, and the first bayonet is arranged on the inner side wall of the locking block.

Further, a gap is formed on one side or two sides of the first clamping block by the locking block or the outer tube; and when the locking block or the outer tube is provided with gaps at two sides of the first clamping block, a spring piece is formed between the two gaps, and the first clamping block is positioned on the spring piece.

Further, a second joint structure is arranged between the limiting block and the inner tube, and the second joint structure comprises a second bayonet and a second clamping block arranged in the second bayonet;

The second bayonet is arranged on the outer side wall of the inner tube, and the second clamping block is arranged on the inner side wall of the limiting block; or the second clamping block is arranged on the outer side wall of the inner tube, and the second bayonet is arranged on the inner side wall of the limiting block.

Further, one end of the limiting block is inwards bent to form an inner protrusion, and the inner protrusion is in contact with one end face of the inner tube.

Further, the limiting block is panel-shaped, a plurality of convex surfaces are formed on one side, far away from the inner tube, of the limiting block in a protruding mode, and the convex surfaces are extruded with the inner side wall of the outer tube.

Further, the limiting block is recessed in the direction away from the inner tube at one side close to the inner tube to form a concave surface, and the concave surface and the convex surface are correspondingly arranged.

Further, the number of the limiting blocks is two, and the limiting blocks are respectively positioned at two sides of the inner pipe.

Further, a first thread is formed on the outer side wall of the outer tube, a second thread matched with the first thread is formed on the inner side wall of the locking block, and the locking block is screwed with the first thread through the second thread so as to be fixed on the outer tube.

The utility model has the following beneficial effects: compared with the prior art, the limiting mechanism is provided with the locking block, and the locking block is sleeved on the outer side of the outer tube and fixed with the outer tube, so that after the inner tube is installed with the limiting block, one end of the inner tube with the limiting block is inserted into the outer tube, and finally the locking block is sleeved on the outer side of the outer tube and fixed with the outer tube, and the installation of the outer tube and the inner tube can be completed.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a middle cross-sectional view of the present utility model;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is an enlarged view of area B of FIG. 3;

FIG. 6 is a block diagram of a lock block of the present utility model;

FIG. 7 is a block diagram of the present utility model;

fig. 8 is a block diagram of the stopper of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-8, a telescopic rod according to an embodiment of the present utility model.

A telescopic rod comprises an outer tube 2 and an inner tube 1, the outer tube 2 and/or the inner tube 1 being at least partly bent. It should be understood that in one embodiment, the outer tube 2 is at least partially a bent tube and the inner tube 1 is a straight tube; in other embodiments, the inner tube 1 is at least partially an elbow, and the outer tube 2 is a straight tube; or the inner tube 1 and the outer tube 2 are at least partially bent tubes. The outer tube 2 is sleeved outside the inner tube 1, and a limiting mechanism is arranged between the outer tube 2 and the inner tube 1.

The limiting mechanism comprises a locking block 3 with a hollow inside and a limiting block 5 arranged at one end of the inner pipe 1. The stopper 5 is all arranged in inside the outer tube 2, and the outside of the outer tube 2 is located to the cover of locking piece 3 and is fixed with the outer tube 2, and the one end of locking piece 3 is inwards buckled and is formed with spacing briquetting 32, and spacing briquetting 32 is located the top of outer tube 2 and is used for spacing the motion stroke of stopper 5.

According to the utility model, the locking block 3 is arranged on the limiting mechanism, and the locking block 3 is sleeved on the outer side of the outer tube 2 and is fixed with the outer tube 2, so that after the inner tube 1 is installed with the limiting block 5, one end of the inner tube 1 with the limiting block 5 is inserted into the outer tube 2, and finally the locking block 3 is sleeved on the outer side of the outer tube 2 and is fixed with the outer tube 2, so that the installation of the outer tube 2 and the inner tube 1 can be completed, and the problem that a locking assembly on the traditional telescopic rod is not suitable for sleeve assembly with bending is solved.

In the installation process of the outer tube 2 and the inner tube 1, in order to facilitate the installation of the locking block 3, the locking block 3 can be sleeved on the inner tube 1 from one end of the inner tube 1, where the limiting block 5 is installed, and then one end of the inner tube 1, where the limiting block 5 is located, is inserted into the outer tube 2, and then the locking block 3 is sleeved on the outer side of the outer tube 2 and fixed with the outer tube 2, so that the installation of the outer tube 2 and the inner tube 1 can be completed, and the limiting block 5 is blocked by the limiting block 32 on the locking block 3 so as to limit the movement stroke of the limiting block 5.

Specifically, in the above embodiment, the stopper 5 is at least partially abutted against the outer tube 2 at a side surface far from the inner tube 1 to provide friction force for drawing the inner tube 1 to fix the positions of the inner tube 1 and the outer tube 2 without external force.

In an embodiment, the limiting mechanism further includes a stop block 4 partially disposed in the outer tube 2, the stop block 4 is hollow, and one end of the stop block 4 is bent outwards to form a limiting surrounding edge 41. The stop block 4 is partially arranged between the outer tube 2 and the inner tube 1 and used for limiting the movement stroke of the limiting block 5, and the limiting surrounding edge 41 is positioned between one end face of the outer tube 2 and the limiting pressing block 32 so as to fix the stop block 4 when the locking block 3 is fixed with the outer tube 2. Specifically, the stopper 4 contacts and abuts the inner tube 1 at a side surface close to the inner tube 1 to increase friction force between the inner tube 1 and the outer tube 2. In the present embodiment, the stopper 4 is integrally injection molded. In other embodiments, the stop 4 may be formed of two stop members with 7-shaped cross sections, or the entire stop 4 may be hollow, and the friction between the inner tube 1 and the outer tube 2 may be increased. And the block 4 is not provided with a bump at the portion between the outer tube 2 and the inner tube 1 for being matched with the outer tube 2 or the inner tube 1, namely, after the end of the inner tube 1 with the limiting block 5 is inserted into the outer tube 2, the block 4 can be placed between the outer tube 2 and the inner tube 1 again, and the block 4 and the stability of the connection of the block 4 and the outer tube 2 can not be damaged.

In the above embodiment, the first engagement structure is provided between the outer tube 2 and the locking block 3, and the first engagement structure includes the first bayonet 21 and the first latch 31 disposed in the first bayonet 21 to fix the locking block 3 to the outer tube 2. In particular, the first bayonet 21 may be a slot or a through hole. The first bayonet 21 is arranged on the outer side wall of the outer tube 2, and the first clamping block 31 is arranged on the inner side wall of the locking block 3; or the first clamping block 31 is arranged on the outer side wall of the outer tube 2, and the first bayonet 21 is arranged on the inner side wall of the locking block 3.

In one embodiment, the locking block 3 or the outer tube 2 is provided with a gap 33 at one side or both sides of the first clamping block 31. By means of the gap 33, a deformation space is provided for the position of the first clamping block 31, so that the first clamping block 31 is placed in the first bayonet 21. Optimally, the locking block 3 or the outer tube 2 is provided with gaps 33 at two sides of the first clamping block 31, a spring piece 34 is formed between the two gaps 33, and the first clamping block 31 is positioned on the spring piece 34.

In other embodiments, the outer sidewall of the outer tube 2 is formed with a first thread (not shown), the inner sidewall of the locking block 3 is formed with a second thread (not shown) for cooperating with the first thread, and the locking block 3 is screwed with the first thread by the second thread to be fixed on the outer tube 2, so that the locking block 3 can be fixed on the outer tube 2.

In an embodiment, a second engagement structure is disposed between the stopper 5 and the inner tube 1, and the second engagement structure includes a second bayonet 11 and a second clamping block 53 disposed in the second bayonet 11 to fix the stopper 5 and the inner tube 1. Specifically, the second bayonet 11 is disposed on the outer sidewall of the inner tube 1, and the second clamping block 53 is disposed on the inner sidewall of the limiting block 5; or the second clamping block 53 is arranged on the outer side wall of the inner tube 1, and the second bayonet 11 is arranged on the inner side wall of the limiting block 5. In this embodiment, the limiting block 5 may be integrally injection molded and hollow. In other embodiments, the limiting block 5 may also be formed by combining two parts with 7-shaped cross sections, etc.

In an embodiment, one end of the limiting block 5 is bent inwards to form an inner protrusion 54, and the inner protrusion 54 contacts with one end surface of the inner tube 1, that is, when the inner tube 1 is pulled along the upper side of the outer tube 2, the inner protrusion 54 is located at the bottom of the inner tube 1, so as to directly push the limiting block 5 to move when the inner tube 1 moves towards the inner side of the outer tube 2, and prevent the limiting block 5 from falling off when the inner tube 1 moves towards the inner side of the outer tube 2.

In an embodiment, the limiting block 5 is panel-shaped, and a plurality of convex surfaces 51 are formed on the outer side of the limiting block 5 away from the inner tube 1, and the convex surfaces 51 are extruded with the inner side wall of the outer tube 2, so that friction exists in the movement between the inner tube 1 and the outer tube 2 and no external force is applied, and the opposite position of the inner tube 1 and the outer tube 2 can be fixed, so as to achieve telescopic fixation. Specifically, the number of convex surfaces 51 may be two, and the convex surfaces are respectively located at the upper end and the lower end of the second clamping block 53. In other embodiments, the number of convex surfaces 51 may be one, three, four, etc.

In an embodiment, the limiting block 5 is recessed on a side close to the inner tube 1 facing away from the inner tube 1 to form a concave surface 52, the concave surface 52 is disposed corresponding to the convex surface 51, it should be understood that the limiting block 5 does not contact with the inner tube 1 at the position of the convex surface 51, but forms an extruded space with the outer side wall of the inner tube 1, so that when the limiting block 5 is in interference fit with the inner portion of the outer tube 2, an avoidance space is provided, so that the limiting block 5 is placed in the outer tube 2 and abuts against the inner side wall of the outer tube 2, so that friction force is formed between the outer tube 2 and the inner tube 1.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, "and/or" throughout this document includes three schemes, taking a and/or B as an example, including a technical scheme, a technical scheme B, and a technical scheme that both a and B satisfy; in addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. The telescopic rod is characterized by comprising an outer pipe and an inner pipe, wherein at least part of the outer pipe and/or the inner pipe is an elbow, the outer pipe is sleeved on the outer side of the inner pipe, and a limiting mechanism is arranged between the outer pipe and the inner pipe;

The limit mechanism comprises: the inner part is a hollow locking block and a limiting block arranged at one end of the inner pipe; the limiting block is arranged inside the outer tube, the locking block is sleeved outside the outer tube and is fixed with the outer tube, one end of the locking block is inwards bent to form a limiting pressing block, and the limiting pressing block is located at the top of the outer tube and used for limiting the movement stroke of the limiting block.

2. The telescopic link according to claim 1, wherein the limit mechanism further comprises a stop block partially disposed in the outer tube for limiting the movement stroke of the limit block, the stop block is hollow, one end of the stop block is bent outwards to form a limit surrounding edge, the stop block is partially disposed between the outer tube and the inner tube, and the limit surrounding edge is disposed between an end face of the outer tube and the limit pressing block.

3. The telescopic rod according to claim 1, wherein a first engagement structure is provided between the outer tube and the locking block, the first engagement structure comprising a first bayonet and a first clip block disposed within the first bayonet;

The first bayonet is arranged on the outer side wall of the outer tube, and the first clamping block is arranged on the inner side wall of the locking block; or the first clamping block is arranged on the outer side wall of the outer tube, and the first bayonet is arranged on the inner side wall of the locking block.

4. A telescopic link according to claim 3, wherein the locking block or outer tube is provided with a gap on one or both sides of the first clamping block; and when the locking block or the outer tube is provided with gaps at two sides of the first clamping block, a spring piece is formed between the two gaps, and the first clamping block is positioned on the spring piece.

5. The telescopic rod according to claim 2, wherein a second engagement structure is provided between the stopper and the inner tube, the second engagement structure comprising a second bayonet and a second clip block disposed within the second bayonet;

The second bayonet is arranged on the outer side wall of the inner tube, and the second clamping block is arranged on the inner side wall of the limiting block; or the second clamping block is arranged on the outer side wall of the inner tube, and the second bayonet is arranged on the inner side wall of the limiting block.

6. The telescopic link according to claim 5, wherein one end of the stopper is bent inward to form an inner protrusion, and the inner protrusion is in contact with an end surface of the inner tube.

7. The telescopic rod according to claim 2, wherein the limiting block is panel-shaped, and a plurality of convex surfaces are formed on the outer protrusion surface of the limiting block on the side surface far away from the inner tube, and the convex surfaces are extruded with the inner side wall of the outer tube.

8. The telescopic link according to claim 7, wherein the stopper is recessed in a direction away from the inner tube on a side closer to the inner tube to form a concave surface, and the concave surface is disposed corresponding to the convex surface.

9. The telescopic rod according to claim 8, wherein the number of the limiting blocks is two, and the limiting blocks are respectively positioned at two sides of the inner tube.

10. The telescopic link according to claim 1, wherein the outer side wall of the outer tube is formed with a first thread, the inner side wall of the locking block is formed with a second thread cooperating with the first thread, and the locking block is screwed with the first thread by the second thread to be fixed on the outer tube.