Telescopic rod structure convenient to operate

Abstract

The utility model discloses a telescopic rod structure convenient to operate, which comprises an inner pipe and an outer pipe, the inner pipe and the outer pipe are coaxially and mutually sleeved, an adjusting structure is arranged between the inner pipe and the outer pipe, the adjusting structure comprises a hollow seat body, the seat body is connected to the end part of the inner pipe, a sliding block capable of sliding in the radial direction is arranged in the seat body, a positioning pin is arranged on the sliding block, and the positioning pin is connected with the inner pipe. A through hole is formed in the side direction of the seat body, the positioning pin stretches and retracts in the through hole along with movement of the sliding block, an elastic piece is further arranged in the seat body and is of an arc-shaped strip-shaped plate body structure, one end of the elastic piece is movably connected into the seat body, the other end of the elastic piece is movably connected to the bottom of the sliding block, a traction rope is fixed to the elastic piece, and one end of the traction rope is connected to the center of the elastic piece. And the other end extends along the inner pipe to serve as a force application end. The device is simple in structure, easy to implement and good in stability.

Description

Technical Field

[0001] This utility model relates to the field of telescopic pole technology, and in particular to a telescopic pole structure that is easy to operate. Background Technology

[0002] Manual telescopic rods have a wide range of applications, such as curtain rods and door curtain rods. Two rod-shaped parts are interlocked and slide relative to each other. An adjustment mechanism is provided between the two rod-shaped parts. When the two rod-shaped parts extend or retract relative to each other, they are locked by the adjustment mechanism, thereby realizing the telescopic function of the rod. At present, the adjustment mechanism of telescopic rods on the market is relatively complex, which not only increases the manufacturing cost, but also makes them heavy and not portable enough. Utility Model Content

[0003] The purpose of this utility model is to design an easy-to-operate telescopic rod structure to overcome the shortcomings of the above-mentioned technology.

[0004] This utility model designs an easy-to-operate telescopic rod structure, including an inner tube and an outer tube, which are coaxially connected to each other. An adjustment structure is provided between the inner and outer tubes. The adjustment structure includes a hollow seat body connected to the end of the inner tube. A radially sliding slider is provided inside the seat body, and a positioning pin is provided on the slider. A through hole is provided on the side of the seat body, and the positioning pin extends and retracts within the through hole as the slider moves. An elastic plate is also provided inside the seat body, arranged radially along the seat body. The elastic plate has an arc-shaped strip plate structure, with one end movably connected to the inside of the seat body and the other end movably connected to the bottom of the slider. A traction rope is fixed to the elastic plate, with one end connected to the center of the elastic plate and the other end extending axially along the inner or outer tube as the force-applying end.

[0005] When force is applied to the force-applying end of the traction rope, pulling the rope causes the elastic plate to deform. This deformation causes the slider to slide, which in turn causes the positioning pin to retract. When the driving force at the force-applying end is removed, the slider slides in the opposite direction under the restoring force of the elastic plate, thereby pushing the positioning pin to extend.

[0006] The inner tube has a radial hole communicating with the through hole on its peripheral wall, and the outer tube has multiple spaced stop holes on its peripheral wall along the axial direction. When the positioning pin extends, it passes through the through hole and the radial hole in sequence and then inserts into the stop hole, thereby locking the outer tube and the inner tube. When the positioning pin retracts, it retracts into the through hole, and the outer tube and the inner tube are unlocked, allowing them to slide relative to each other axially to adjust their length.

[0007] Preferably, the seat body is provided with a radially extending slide groove, and the slider slides in cooperation with the slide groove, so that the slider is slidably connected to the seat body.

[0008] Further optimization involves using a spring steel sheet as the elastic sheet.

[0009] Further optimization involves connecting one end of the traction rope to the protruding surface of the arc-shaped elastic sheet, and placing it at the point of maximum outer diameter of the protruding surface.

[0010] Preferably, the concave surface of the elastic sheet is provided with a spring, one end of which is connected to the concave surface of the elastic sheet and the other end is connected to the inside of the seat body. The spring and the traction rope inside the seat body are on the same straight line.

[0011] Further optimization involves providing a cylindrical base within the seat body, with the spring portion inserted into the cylindrical base and its end fixed within the cylindrical base.

[0012] In a further optimization, one end of the spring is connected to the seat body via a cylindrical base, and the other end is connected to the concave surface of the elastic sheet via a connecting rope.

[0013] Preferably, the bottom of the slider and the inner wall of the seat are provided with U-shaped seats, and the two ends of the elastic sheet are provided with shafts, which are respectively hinged to the corresponding U-shaped seats.

[0014] The technical advantages of this invention are as follows: the inner and outer tubes are nested together, and an adjustment structure is provided at the end of the inner tube inserted into the outer tube. The adjustment structure includes a base, a locking base with a slider and a pulley inside, the slider being slidably connected to the locking base, and the pulley being rotatably connected to the locking base. A positioning pin is provided on the slider, and an elastic element is provided between the slider and the locking base, so that the positioning pin is in a normally extended state under the elastic force of the elastic element. The positioning pin extends into the positioning hole of the outer tube, so that the inner and outer tubes are locked together. A traction rope is connected to the slider. By pulling the traction rope, the slider is pulled, and the traction rope moves along the pulley, causing the slider to compress the elastic element, thereby causing the positioning pin to retract, and thus allowing the inner and outer tubes to slide relative to each other, thereby realizing the length adjustment of the telescopic rod. Therefore, this invention is not only simple in structure and easy to implement, but also has good stability. Attached Figure Description

[0015] Figure 1 This is an exploded view of the overall structure of this utility model;

[0016] Figure 2 This is a structural diagram of the base body in this utility model;

[0017] Figure 3 This is a structural cross-sectional view of the base body in this utility model;

[0018] Figure 4 This is a structural diagram of the elastic element in this utility model.

[0019] In the diagram: 1. Inner tube; 2. Outer tube; 3. Seat; 31. First section; 32. Second section; 4. Slide groove; 5. Slider; 6. Positioning pin; 7. Elastic sheet; 71. Protruding surface; 72. Concave surface; 8. Through hole; 9. Radial hole; 10. Stop hole; 11. Traction rope; 12. Spring; 13. Cylindrical base; 14. U-shaped seat; 15. Groove; 16. Buckle block; 17. Limiting groove; 18. Connecting rope. Detailed Implementation

[0020] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0021] This utility model includes an inner tube 1 and an outer tube 2, which are coaxially connected to each other. The inner tube 1 and the outer tube 2 are usually circular tubes. An adjustment structure is provided between the inner tube 1 and the outer tube 2. The adjustment structure includes a hollow seat 3, which is connected to the end of the inner tube 1 located inside the outer tube 2. The seat 3 has a sliding groove 4 that extends radially along the inner tube 1. A slider 5 is slidably fitted on the sliding groove 4. The slider 5 slides back and forth along the slider 5 in a radial direction. A positioning pin 6 is connected to the slider 5. The positioning pin 6 moves with the slider 5. The seat 3 has a through hole 8 on its side. The positioning pin 6 extends and retracts in the through hole 8 as the slider 5 moves. That is, the positioning pin 6 can extend out of the through hole 8 or retract into the through hole 8.

[0022] The seat 3 is also provided with an elastic plate 7, which is arranged radially along the seat 3. The elastic plate 7 is an arc-shaped strip plate structure and is vertically arranged inside the seat 3. One end of the elastic plate 7 is movably connected to the inside of the seat 3, and the other end is movably connected to the bottom of the slider 5. A traction rope 11 is fixed on the elastic plate 7. One end of the traction rope 11 is connected to the center of the elastic plate 7, and the other end extends along the axial direction of the inner tube 1 or the outer tube 2 as the force application end. When force is applied to the force application end of the traction rope 11 and the traction rope 11 is pulled, the traction rope 11 pulls the elastic plate 7 to deform. The elastic plate 7 bends and deforms, causing the slider 5 to slide, which in turn causes the positioning pin 6 to retract. When the driving force of the force application end is removed, the slider 5 moves in the opposite direction under the action of the restoring force of the elastic plate 7, which in turn pushes the positioning pin 6 to extend.

[0023] The inner tube 1 has a radial hole 9 on its peripheral wall that communicates with the through hole 8. The outer tube 2 has multiple spaced stop holes 10 on its peripheral wall along the axial direction. When the positioning pin 6 extends, it passes through the through hole 8 and the radial hole 9 in sequence and is inserted into the stop hole 10, thereby locking the outer tube 2 and the inner tube 1. When the positioning pin 6 retracts, it retracts into the through hole 8, and the outer tube 2 and the inner tube 1 are unlocked, so that the inner tube 1 and the outer tube 2 can slide relative to each other axially to achieve the purpose of adjusting the length.

[0024] The seat 3 is equipped with various limiting ribs for limiting, so that the slider 5 can be stably slidably connected in the groove 4. Both the seat 3 and the slider 5 are made of plastic, which is not only lightweight, but also easy to install and remove.

[0025] Typically, the elastic sheet 7 is made of spring 12 steel sheet, which can be made of carbon steel, alloy steel or stainless steel, etc., and has the characteristics of high elasticity, fatigue resistance and impact resistance.

[0026] Since the elastic sheet 7 is curved and arc-shaped, one end of the traction rope 11 is connected to the protruding surface 71 of the arc-shaped elastic sheet 7, and the connection point is located at the point of maximum outer diameter of the protruding surface 71. In this way, the traction rope 11 is more labor-saving when pulling the elastic sheet 7 to bend and deform, that is, the deformation of the elastic sheet 7 is more stable and the response is faster.

[0027] A spring 12 is provided on the concave surface 72 of the elastic sheet 7. One end of the spring 12 is connected to the concave surface 72 of the elastic sheet 7, and the other end is connected to the inside of the seat body 3. The spring 12 and the traction rope 11 inside the seat body 3 are on the same straight line. When the traction rope 11 is pulled to deform the elastic sheet 7, the elastic sheet 7 bends and deforms, and the spring 12 is pulled by the elastic element and is in a stretched state. When the traction rope 11 is released, the elastic sheet 7 returns to its original shape, and the spring 12 also contracts in response to the restoring force. Under the action of the restoring force of the spring 12, the elastic sheet 7 can recover its shape more quickly and efficiently, and at the same time, it can avoid the elastic sheet 7 from failing due to excessive deformation.

[0028] Furthermore, the base 3 is provided with a cylindrical base 13, and the spring 12 is partially inserted into the cylindrical base 13 and its end is fixed inside the cylindrical base 13, so that the spring 12 can move along the cylindrical base 13 during the extension and retraction process, which facilitates the positioning of the spring 12 and ensures that the spring 12 is in a stable state during the extension and retraction process, thus preventing the spring 12 from bending and affecting the practical effect.

[0029] Furthermore, one end of the spring 12 is connected to the seat 3 through the cylindrical base 13, and the other end is connected to the concave surface 72 of the elastic plate 7 through a connecting rope 18. This reduces the length of the spring 12 under normal use conditions, thereby ensuring the service life and effectiveness of the spring 12.

[0030] Furthermore, the bottom of the slider 5 and the inner wall of the seat 3 are both provided with U-shaped seats 14, and the two ends of the elastic sheet 7 are provided with shafts, which are respectively connected to the corresponding U-shaped seats 14, so that the elastic sheet 7 can be more flexible when bending and deforming, while being fixed and stable and reliable.

[0031] Furthermore, since both the inner tube 1 and the outer tube 2 are circular tube structures, the outer walls of the inner tube 1 and the outer tube 2 are provided with axially extending limiting grooves 17 on the side where the positioning pin 6 is located. The radial hole 9 and the stop hole 10 are both located in the corresponding limiting grooves 17, so that the positioning pin 6 remains in the limiting grooves 17 after it is extended, and will not interfere with the sleeve connection between the inner tube 1 and the outer tube 2. At the same time, the inner tube 1 and the outer tube 2 are radially limited by the limiting grooves 17 to prevent the inner tube 1 and the outer tube 2 from rotating relative to each other.

[0032] Furthermore, the seat 3 is formed by snapping together two main bodies that are radially halved. The seat 3 has a cylindrical appearance, and both main bodies have cavities inside. After splicing, the seat 3 forms a hollow structure inside, which not only facilitates the installation of components such as the slider 5, but also facilitates the overall assembly and disassembly of the telescopic rod.

[0033] Furthermore, the seat 3 includes a first segment 31 and a second segment 32. The first segment and the second segment 32 have a coaxial cylindrical appearance. The first segment 31 is connected to the inner tube 1, and the inner tube 1 is sleeved on the outer periphery of the first segment 31. The second segment 32 is connected to the outer tube 2. The outer tube 2 can move axially along the second segment 32 and the inner tube 1. The inner tube 1 and the first segment 31 are connected by a snap fastener. Specifically, the outer periphery of the first segment 31 is provided with a groove 15, and the inner wall of the groove 15 extends out to form an elastic snap fastener block 16. The outer wall of the inner tube 1 is provided with a slot, and the snap fastener block 16 is engaged in the slot, so that the inner tube 1 and the seat 3 are detachably connected.

[0034] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A telescopic pole structure for ease of operation, characterised in that, The utility model provides a length adjustable telescopic tube, which comprises an inner tube (1) and an outer tube (2), the inner tube (1) and the outer tube (2) are coaxially sleeved with each other, an adjusting structure is arranged between the inner tube (1) and the outer tube (2), the adjusting structure comprises a hollow seat body (3), the seat body (3) is connected to the end of the inner tube (1), a sliding block (5) capable of sliding radially is arranged in the seat body (3), a positioning pin (6) is arranged on the sliding block (5), a through hole (8) is formed in the side of the seat body (3), the positioning pin (6) is telescoped in the through hole (8) when the sliding block (5) moves, an elastic sheet (7) is further arranged in the seat body (3), the elastic sheet (7) is arranged along the radial direction of the seat body (3), the elastic sheet (7) is in the form of a circular arc strip plate body structure, one end of the elastic sheet (7) is movably connected to the inside of the seat body (3), and the other end of the elastic sheet (7) is movably connected to the bottom of the sliding block (5), a traction rope (11) is fixed on the elastic sheet (7), one end of the traction rope (11) is connected to the central part of the elastic sheet (7), and the other end of the traction rope (11) extends along the axial direction of the inner tube (1) or the outer tube (2) and serves as a force applying end, when the force applying end of the traction rope (11) is driven to pull the traction rope (11), the traction rope (11) pulls the elastic sheet (7) to deform, the elastic sheet (7) deforms to drive the sliding block (5) to slide, and in turn drives the positioning pin (6) to contract, when the driving force of the force applying end is removed, the sliding block (5) reversely slides under the action of the restoring force of the elastic sheet (7), and in turn drives the positioning pin (6) to elongate, a radial hole (9) in communication with the through hole (8) is formed in the peripheral wall of the inner tube (1), a plurality of interval distributed gear holes (10) are formed in the peripheral wall of the outer tube (2) along the axial direction, when the positioning pin (6) is elongated, the positioning pin (6) is sequentially inserted into the gear holes (10) after passing through the through hole (8) and the radial hole (9), so that the outer tube (2) and the inner tube (1) are in a locked state, when the positioning pin (6) is contracted, the positioning pin (6) is retracted into the through hole (8), at this time, the outer tube (2) and the inner tube (1) are in an unlocked state, so that the inner tube (1) and the outer tube (2) can slide axially relative to each other, so as to achieve the purpose of length adjustment.

2. The easy-to-operate telescopic pole structure according to claim 1, characterized in that, A radial sliding groove (4) is arranged in the seat body (3), the sliding block (5) is in sliding fit with the sliding groove (4), so that the sliding block (5) is slidably connected in the seat body (3).

3. A telescopic pole structure for ease of operation according to claim 2, characterised in that, The elastic sheet (7) is a spring (12) steel sheet.

4. A telescopic pole structure for ease of operation according to claim 3, characterised in that, One end of the traction rope (11) is connected to the convex surface (71) of the circular arc elastic sheet (7) and is located at the maximum point of the outer diameter of the convex surface (71).

5. The easy-to-operate telescopic pole structure according to claim 1, characterized in that, A spring (12) is arranged on the inner concave surface (72) of the elastic sheet (7), one end of the spring (12) is connected to the inner concave surface (72) of the elastic sheet (7), the other end of the spring (12) is connected to the inside of the seat body (3), and the spring (12) is in the same straight line with the traction rope (11) in the seat body (3).

6. A telescopic pole structure for ease of operation according to claim 5, wherein, A cylindrical base (13) is arranged in the seat body (3), the spring (12) is partially inserted into the cylindrical base (13) and the end part is fixed in the cylindrical base (13).

7. A telescopic pole structure for ease of operation according to claim 6, characterised in that, One end of the spring (12) is connected to the seat body (3) through a cylindrical base (13), and the other end is connected to the inner concave surface (72) of the elastic sheet (7) through a connecting rope (18).

8. The easy-to-operate telescopic pole structure according to claim 1, characterized in that, The bottom of the sliding block (5) and the inner wall of the seat body (3) are both provided with a U-shaped seat (14), and the elastic sheet (7) is provided with shaft bodies at both ends to form a hinge with the corresponding U-shaped seats (14).

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