Novel telescopic rod

Abstract

The utility model discloses a novel telescopic rod which comprises an inner pipe and an outer pipe, a locking mechanism is arranged between the inner pipe and the outer pipe, the locking mechanism comprises a seat body, a cavity is formed in the seat body, the cavity is provided with a trigger piece, the trigger piece is connected with a locking pin, the seat body is provided with a through hole, the locking pin is driven by the trigger piece to stretch out and draw back in the through hole, and the inner pipe is provided with a radial hole. A plurality of gear holes which are linearly distributed are formed in the peripheral wall of the outer pipe. 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 novel telescopic pole. 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. A locking 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 locking mechanism, thereby realizing the telescopic function of the rod. Currently, the locking structure of telescopic rods on the market is usually quite 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 a new type of telescopic rod to overcome the shortcomings of the above-mentioned technology.

[0004] This utility model designs a novel telescopic rod, comprising an inner tube and an outer tube coaxially sleeved outside the inner tube. A locking mechanism is provided between the inner and outer tubes. The locking mechanism includes a seat connected to the end of the inner tube, with a cavity formed inside the seat. A trigger element is provided inside the cavity, and a locking pin is connected to the trigger element. A through hole communicating with the cavity is opened on the surface of the seat. The locking pin is driven by the trigger element to extend and retract within the through hole. The inner tube has a radial hole coaxial with the through hole for the locking pin to pass through. The outer tube has multiple linearly distributed stop holes along its axial direction on its peripheral wall.

[0005] When the locking pin is extended, it passes through the radial hole and extends into the stop hole to form a positioning, thereby locking the outer tube and the inner tube; when the locking pin is retracted, the outer tube and the inner tube unlock each other, allowing the outer tube and the inner tube to slide relative to each other axially.

[0006] Preferably, the trigger is connected to a traction rope, which passes through the seat and extends along the axial direction of the inner tube as a force-applying end. By applying force to the force-applying end, the trigger drives the locking pin to perform a telescopic action.

[0007] Further optimization includes a triggering element comprising a first slider, a first elastic element, a rotating arm, and a first guide post. A first groove is formed in the inner wall of the cavity, and the first slider is slidably connected to the first groove. The locking pin is connected to the first slider and moves with it. The first elastic element is positioned between the first slider and the inner wall of the cavity. One end of the rotating arm is rotatably connected to the cavity via a rotating shaft, and the other end of the rotating arm, as a suspended end, contacts the first slider. The first guide post is positioned within the cavity and below the rotating arm. One end of the traction rope is connected to the rotating arm, and the other end of the traction rope passes around the first guide post, through the seat, and extends along the inner tube. Pulling the traction rope drives the rotating arm to rotate. The suspended end of the rotating arm presses down on the first slider by rotation, causing the first slider to overcome the elastic force of the first elastic element and move downwards. At this time, the locking pin retracts, and the outer tube and inner tube unlock each other.

[0008] Further optimized, the trigger element includes a second slider, a second elastic element, an L-shaped swing arm, and a rotating shaft. A second groove is formed in the inner wall of the cavity, and the second slider is slidably connected to the second groove. The locking pin is connected to the second slider and moves with it. The second elastic element is disposed between the second slider and the inner wall of the cavity. One end of the L-shaped swing arm extends to the connection point between the locking pin and the second slider and has a notch, allowing one end of the L-shaped swing arm to be engaged with the locking pin through the notch. The other end of the L-shaped swing arm is connected to a traction rope. The L-shaped swing arm is rotatably mounted within the cavity via the rotating shaft.

[0009] By pulling the traction rope, one end of the L-shaped swing arm is pulled, causing the L-shaped swing arm to rotate around the rotation axis. The other end of the L-shaped swing arm presses down on the second slider by rotating, causing the second slider to move down against the elastic force of the second elastic element. At this time, the locking pin retracts, and the outer tube and the inner tube unlock each other.

[0010] Further optimization includes a third slider, a third elastic element, and a positioning post. A third groove is formed on the inner wall of the cavity, and the third slider is slidably connected to the third groove. The third slider has an obliquely oriented groove. The positioning post is connected to the locking pin and inserted into the groove to form a sliding connection. The third elastic element is located between the third slider and the inner wall of the cavity. One end of the traction rope is connected to the third slider. By pulling the traction rope, the third slider is pulled, and the third slider slides against the elastic force of the third elastic element. The groove slides with the third slider, thereby driving the positioning post to move obliquely along the groove. The positioning post drives the locking pin to move. The positioning post moves from the high point to the low point of the groove, causing the locking pin to switch from an extended state to a retracted state. At this time, the outer tube and the inner tube are unlocked.

[0011] Further optimization includes a fourth slider, a fourth elastic element, a positioning block, and a fifth elastic element. The inner wall of the cavity has a fourth and a fifth sliding groove. The fourth slider is slidably connected to the fourth sliding groove, and its top surface forms a first inclined surface. The positioning block is slidably connected to the fifth sliding groove, and its sliding direction is perpendicular to the sliding direction of the fourth slider. A locking pin is connected to the positioning block, which has a second inclined surface. The second inclined surface and the first inclined surface form an oblique sliding fit. The fourth elastic element is disposed between the fourth slider and the inner wall of the cavity, and the fifth elastic element is disposed between the positioning block and the inner wall of the cavity. One end of a traction rope is connected to the fourth slider. Pulling the traction rope pulls the fourth slider, causing it to slide against the elastic force of the fourth elastic element. The fourth slider moves the positioning block by oblique sliding, which in turn moves the locking pin. The positioning block moves from the high point to the low point of the first inclined surface, causing the locking pin to switch from an extended to a retracted state. At this time, the outer tube and the inner tube are unlocked.

[0012] Further optimization includes a fifth slider, a sixth elastic element, an L-shaped movable piece, and a second guide post. A sixth groove is formed in the inner wall of the cavity, and the fifth slider is slidably connected to the sixth groove. The locking pin is connected to the fifth slider and moves with it. The sixth elastic element is positioned between the fifth slider and the inner wall of the cavity. One end of the L-shaped movable piece extends to the connection point between the locking pin and the fifth slider and has a notch, allowing one end of the L-shaped movable piece to engage with the locking pin through the notch. The other end of the L-shaped movable piece is connected to a traction rope. The second guide post is located within the cavity at the bend of the L-shaped movable piece, allowing the L-shaped movable piece to rotate around the second guide post.

[0013] By pulling the traction rope, one end of the L-shaped movable piece is pulled, causing the L-shaped movable piece to rotate around the second guide post. The other end of the L-shaped movable piece presses down on the fifth slider by rotating, causing the fifth slider to overcome the elastic force of the sixth elastic element and move down. At this time, the locking pin retracts, and the outer tube and the inner tube unlock each other.

[0014] Preferably, the seat includes a first end and a second end, the outer diameter of the first end is smaller than the outer diameter of the second end, the inner tube is sleeved on the first end, and the outer tube is sleeved on the second end and the inner tube.

[0015] Further optimization involves symmetrically distributed grooves on the outer peripheral wall of the first end, with elastically deformable locking blocks extending from the inner walls of the grooves. A slot is provided on the peripheral wall of the inner tube. After the inner tube is sleeved with the first end, the locking blocks engage with the slots to create a limiting position, thus fixing the first end and the inner tube together.

[0016] Further optimization involves the base being composed of two radially halved blocks joined together, each block having an internal cavity, which together form a cavity; and each block having a semi-hole on its edge, which together form a through hole.

[0017] The technical advantage of this invention is that the inner and outer tubes are nested together. A locking mechanism is provided at the end of the inner tube inserted into the outer tube, and a stop hole is provided on the outer tube. The locking mechanism includes a base with a retractable locking pin. Inside the base is a trigger for driving the locking pin to extend and retract. The trigger is connected to a traction rope, one end of which is connected to the trigger, and the other end extends through the base along the axial direction of the inner tube as a force-applying end. Driving the traction rope drives the trigger, causing the trigger to drive the locking pin to extend and retract.

[0018] In the initial state, the locking pin is in its extended position, inserted into the gear position hole, locking the inner and outer tubes. When the traction rope is pulled, the traction rope drives the trigger, which in turn drives the locking pin to retract, disengaging it from the gear position hole and unlocking the inner and outer tubes. At this point, the inner and outer tubes can slide relative to each other, achieving the purpose of length adjustment. Once the preset length is adjusted, the locking pin can be inserted into the corresponding gear position hole to lock. Therefore, this invention is not only simple in structure and easy to implement, but also has good stability. Attached Figure Description

[0019] Figure 1 This is an exploded view of the overall structure of this utility model;

[0020] Figure 2 This is a structural diagram of the base body in this utility model;

[0021] Figure 3 This is a cross-sectional view of the trigger element in Embodiment 1;

[0022] Figure 4 This is a cross-sectional view of the trigger element in Embodiment 2;

[0023] Figure 5 This is a cross-sectional view of the trigger element in Embodiment 3;

[0024] Figure 6 This is a cross-sectional view of the trigger element in Embodiment 4;

[0025] Figure 7 This is a cross-sectional view of the trigger element in Embodiment 5.

[0026] In the diagram: 1. Inner tube; 2. Outer tube; 3. Seat; 3-1. First end; 3-2. Groove; 3-3. Buckling block; 3-4. Second end; 4. Cavity; 5. Locking pin; 6. Through hole; 7. Radial hole; 8. Gear hole; 9. Traction rope; 10. First slider; 11. First elastic element; 12. Rotary arm; 13. First guide post; 14. First slide groove; 15. Second slider; 16. Second elastic element; 17. L-shaped swing arm; 18. Rotating shaft; 19. Second slide groove; 20. Notch; 21. Third slider; 22. Third elastic element; 23. Positioning pin; 24. Third slide groove; 25. Groove body; 26. Fourth slider; 27. Fourth elastic element; 28. Positioning block; 29. ​​Fifth elastic element; 30. Fourth slide groove; 31. Fifth slide groove; 32. First inclined surface; 33. Second inclined surface; 34. Slot; 35. Limiting groove;

[0027] 15' Fifth slider; 16' Sixth elastic element; 17' L-shaped movable piece; 18' Second guide post; 19' Sixth slide groove; 20' Notch; Detailed Implementation

[0028] Example 1

[0029] This utility model includes an inner tube 1 and an outer tube 2 coaxially sleeved outside the inner tube 1. A locking mechanism is provided between the inner tube 1 and the outer tube 2. The locking mechanism is used to lock or unlock the inner tube 1 and the outer tube 2. When the locking mechanism is in the unlocked state, the inner tube 1 and the outer tube 2 can slide relative to each other, thereby realizing length adjustment. When the locking mechanism is in the locked state, the inner tube 1 and the outer tube 2 are locked together.

[0030] The locking mechanism includes a seat 3 connected to the end of the inner tube 1. A cavity 4 is formed inside the seat 3. A trigger is provided in the cavity 4. The trigger is connected to a locking pin 5. A through hole 6 communicating with the cavity 4 is opened on the surface of the seat 3. The locking pin 5 is driven by the trigger to extend and retract in the through hole 6. The inner tube 1 has a radial hole 7 coaxial with the through hole 6 and allowing the locking pin 5 to pass through. The outer tube 2 has a plurality of linearly distributed stop holes 8 on its circumferential wall. That is, when the locking pin 5 is extended, the locking pin 5 passes through the radial hole 7 and extends into the stop hole 8 to form a position, thereby locking the outer tube 2 and the inner tube 1. When the locking pin 5 is retracted, the outer tube 2 and the inner tube 1 are unlocked, so that the outer tube 2 and the inner tube 1 can slide relative to each other axially.

[0031] A traction rope 9 is connected to the trigger. The traction rope 9 passes through the seat 3 and extends along the axial direction of the inner tube 1 to serve as the force application end. By applying force to the force application end, that is, pulling the traction rope 9, the trigger drives the locking pin 5 to perform a telescopic action.

[0032] In this embodiment, the triggering element includes a first slider 10, a first elastic element 11, a rotating arm 12, and a first guide post 13. A first groove 14 is formed on the inner wall of the cavity 4. The first slider 10 is slidably connected to the first groove 14. A locking pin 5 is connected to the first slider 10 and moves with it. The sliding direction of the first slider 10 is radial relative to the inner tube 1. The first elastic element 11 is disposed between the first slider 10 and the inner wall of the cavity 4. One end of the rotating arm 12 is rotatably connected to the cavity 4 via a rotating shaft, and the other end of the rotating arm 12, as a suspended end, contacts the first slider 10. The first guide post 13 is disposed inside the cavity 4 and located below the rotating arm 12, extending from the inner wall of the cavity 4.

[0033] One end of the traction rope 9 is connected to the rotating arm 12, and the other end of the traction rope 9 passes through the first guide post 13, passes through the seat body 3, and extends along the inner tube 1. The first guide post 13 is used to guide and change the direction of the traction rope 9. By pulling the traction rope 9, the rotating arm 12 is driven to rotate. The rotating arm 12 rotates around the rotating axis. The suspended end of the rotating arm 12 forms a downward pressing action by rotating. The rotating arm 12 presses down on the first slider 10, so that the first slider 10 overcomes the elastic force of the first elastic element 11 and moves radially, so that the locking pin 5 retracts accordingly, thereby disengaging the locking pin 5 from the gear hole 8. At this time, the outer tube 2 and the inner tube 1 are unlocked from each other.

[0034] Furthermore, the seat 3 includes a first end 3-1 and a second end 3-4. The outer diameter of the first end 3-1 is smaller than the outer diameter of the second end 3-4. The inner tube 1 is sleeved on the first end 3-1, and the outer tube 2 is sleeved on the second end 3-4 and the inner tube 1.

[0035] Furthermore, the outer peripheral wall of the first end 3-1 is provided with symmetrically distributed grooves 3-2, and the inner wall of the grooves 3-2 extends out a snap-fit ​​block 3-3 with elastic deformation. In this embodiment, the seat 3 is made of plastic, so the snap-fit ​​block 3-3 is also made of plastic. One end of it is integrally connected to the inner wall of the groove 3-2, and the other end is suspended, thus forming a snap-fit ​​block 3-3 with elastic deformation. The peripheral wall of the inner tube 1 is provided with a slot 34. After the inner tube 1 is sleeved with the first end 3-1, the snap-fit ​​block 3-3 is snapped into the slot 34 to form a limit, so that the first end 3-1 and the inner tube 1 form a detachable fixed connection with each other. This not only has a simple structure, but also facilitates loading and unloading.

[0036] Furthermore, the base 3 is composed of two blocks that are radially halved, that is, the cylindrical base 3 is split in half along the axial cross section. Both blocks have cavities inside, and the cavities of the two blocks are joined together to form a cavity 4. It should be noted that the cavity 4 is divided into independent cavities 4 by guide ribs, which are used to position and install the various components of the trigger. The edges of the two blocks have half holes, and the half holes of the two blocks are joined together to form a through hole 6.

[0037] Example 2

[0038] The basic structure is the same as in Embodiment 1, the difference being the structure of the trigger. In this embodiment, the trigger includes a second slider 15, a second elastic element 16, an L-shaped swing arm 17, and a rotating shaft 18. A second groove 19 is provided on the inner wall of the cavity 4, and the second slider 15 is slidably connected to the second groove 19. The sliding direction of the second slider 15 is the same as that of the first slider 10. The locking pin 5 is connected to the second slider 15 and moves with the second slider 15. The second elastic element 16 is disposed between the second slider 15 and the inner wall of the cavity 4. One end of the L-shaped swing arm 17 extends to the connection between the locking pin 5 and the second slider 15. A notch 20 is provided on one end of the L-shaped swing arm 17, at which time one end of the L-shaped swing arm 17 is located at the second slider. The L-shaped swing arm 17 is connected to the inner wall of the cavity 4, and the notch 20 is engaged with the locking pin 5. The other end of the L-shaped swing arm 17 is connected to the traction rope 9. The rotating shaft 18 is set inside the cavity 4. The L-shaped swing arm 17 has a hole, and the rotating shaft 18 passes through the hole of the L-shaped swing arm 17, so that the L-shaped swing arm 17 can rotate around the rotating shaft 8. When one end of the L-shaped swing arm 17 is pulled by pulling the traction rope 9, the L-shaped swing arm 17 rotates around the rotating shaft 18. The end of the L-shaped swing arm 17 with the notch 20 forms a downward action by rotating, thereby pressing down the second slider 15. The second slider 15 overcomes the elastic force of the second elastic element 16 and moves down. At this time, the locking pin 5 retracts, and the outer tube 2 and the inner tube 1 unlock each other.

[0039] Example 3

[0040] The basic structure is the same as in Embodiment 1, the difference being the structure of the trigger. In this embodiment, the trigger includes a third slider 21, a third elastic element 22, and a positioning post 23. A third groove 24 is provided on the inner wall of the cavity 4. The third slider 21 is slidably connected to the third groove 24. The sliding direction of the third slider 21 is the same as the axial direction of the inner tube 1 or the outer tube 2. The third slider 21 has an inclined groove 25, which is inclined relative to the axial direction of the inner tube 1 or the outer tube 2. The positioning post 23 is connected to the locking pin 5 and inserted into the groove 25 to form a sliding connection. That is, the movement of the third slider 21 will drive the positioning post 23 to move along the groove 25. Since the groove 25 is inclined, Therefore, the positioning pin 23 will move up and down along the groove 25, thereby driving the locking pin 5 to move up and down, that is, to achieve the extension and retraction of the locking pin 5. The third elastic element 22 is located between the third slider 21 and the inner wall of the cavity 4. One end of the traction rope 9 is connected to the third slider 21. By pulling the traction rope 9, the third slider 21 is pulled. The third slider 21 slides against the elastic force of the third elastic element 22. The groove 25 slides with the third slider 21, thereby driving the positioning pin 23 to move obliquely along the groove 25. The positioning pin 23 drives the locking pin 5 to move. The positioning pin 23 moves from the high point to the low point of the groove 25, so that the locking pin 5 switches from the extended state to the retracted state. At this time, the outer tube 2 and the inner tube 1 unlock each other.

[0041] Example 4

[0042] The basic structure is the same as in Embodiment 1, the difference being the structure of the trigger element. In this embodiment, the trigger element includes a fourth slider 26, a fourth elastic element 27, a positioning block 28, and a fifth elastic element 29. The inner wall of the cavity 4 is provided with a fourth sliding groove 30 and a fifth sliding groove 31. The fourth slider 26 is slidably connected to the fourth sliding groove 30, and the sliding direction of the fourth slider 26 is the same as that of the third slider 21. The top surface of the fourth slider 26 forms a first inclined surface 32. The positioning block 28 is slidably connected to the fifth sliding groove 31, and the sliding direction of the positioning block 28 is perpendicular to the sliding direction of the fourth slider 26.

[0043] The locking pin 5 is connected to the positioning block 28. The positioning block 28 has a second inclined surface 33, which forms an oblique sliding fit with the first inclined surface 32. The fourth elastic element 27 is disposed between the fourth slider 26 and the inner wall of the cavity 4. The fifth elastic element 29 is disposed between the positioning block 28 and the inner wall of the cavity 4. One end of the traction rope 9 is connected to the fourth slider 26. By pulling the traction rope 9, the fourth slider 26 is pulled. The fourth slider 26 slides against the elastic force of the fourth elastic element 27. The fourth slider 26 drives the positioning block 28 to move by oblique sliding. The positioning block 28 drives the locking pin 5 to move. The positioning block 28 moves from the high point to the low point of the first inclined surface 32, so that the locking pin 5 switches from the extended state to the retracted state. At this time, the outer tube 2 and the inner tube 1 are unlocked.

[0044] Example 5

[0045] The basic structure is the same as in Embodiment 1, the difference being the structure of the trigger. In this embodiment, the trigger includes a fifth slider 15', a sixth elastic element 16', an L-shaped movable piece 17', and a second guide post 18'. A sixth groove 19' is provided on the inner wall of the cavity 4, and the fifth slider 15' is slidably connected to the sixth groove 19'. The sliding direction of the fifth slider 15' is the same as that of the first slider 10. The locking pin 5 is connected to the fifth slider 15' and moves with the fifth slider 15'. The sixth elastic element 16' is disposed between the fifth slider 15' and the inner wall of the cavity 4. One end of the L-shaped movable piece 17' extends to the connection between the locking pin 5 and the fifth slider 15', and a notch 20' is provided on this end. At this time, this end is located at the fifth slider 15'. The notch 20' is engaged with the locking pin 5 between the inner wall of the cavity 4 and the notch 20'. The other end of the L-shaped movable piece 17' is connected to the traction rope 9. The second guide post 18' is located inside the cavity 4 and at the bend of the L-shaped movable piece 17'. The L-shaped movable piece 17' can rotate around the second guide post 18'. When one end of the L-shaped movable piece 17' is pulled by pulling the traction rope 9, the L-shaped movable piece 17' rotates around the second guide post 18'. The end of the L-shaped movable piece 17' with the notch 20' forms a downward pressing action by rotating, thereby pressing down the fifth slider 15'. The fifth slider 15' overcomes the elastic force of the sixth elastic element 16' and moves down. At this time, the locking pin 5 retracts, and the outer tube 2 and the inner tube 1 unlock each other.

[0046] Therefore, the above five embodiments illustrate the structures of four trigger elements. It should be noted that the locking pin 5 is in a normally extended state under the action of the corresponding elastic element, that is, the inner tube 1 and the outer tube 2 are in a locked state. That is, the inner tube 1 and the outer tube 2 are in a locked state under normal conditions. When the traction rope 9 is pulled, the traction rope 9 pulls the trigger element, and the trigger element causes the locking pin 5 to retract, so that the locking pin 5 is disengaged from the stop hole 8. In this way, the inner tube 1 and the outer tube 2 are in an unlocked state, so that the inner tube 1 and the outer tube 2 can slide between each other, thereby allowing the length of the telescopic rod to be adjusted. During the relative sliding process of the inner tube 1 and the outer tube 2, the traction rope 9 must always be in the state of pulling the trigger element until the outer tube 2 and the inner tube 1 slide to the preset position and then the traction rope 9 is released, so that the locking pin 5 extends into the corresponding stop hole 8 to form a lock.

[0047] It should be noted that a button structure can be installed on the inner tube 1. One end of the traction rope 9 extends to the inner tube 1 and is connected to the button structure to form a linkage. The traction rope 9 is pulled by pressing the button structure. The button structure is a conventional structure and will not be described in detail here.

[0048] The first elastic element 11, the second elastic element 16, the third elastic element 22, the fourth elastic element 27, and the fifth elastic element 29 are all springs.

[0049] In addition, both the inner tube 1 and the outer tube 2 are circular tube structures. The inner tube 1 and the outer tube 2 are provided with axially extending limiting grooves 35 on the side where the locking pin 5 is located. The radial hole 7 and the stop hole 8 are both located in the corresponding limiting grooves 35, so that the locking pin 5 is hidden in the limiting grooves 35 and will not interfere with the sleeve connection between the inner tube 1 and the outer tube 2. At the same time, it forms a radial limit between the inner tube 1 and the outer tube 2 to prevent the inner tube 1 and the outer tube 2 from rotating relative to each other.

[0050] 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 novel telescopic pole, characterized in that, The device includes an inner tube (1) and an outer tube (2) coaxially sleeved outside the inner tube (1). A locking mechanism is provided between the inner tube (1) and the outer tube (2). The locking mechanism includes a seat (3) connected to the end of the inner tube (1). A cavity (4) is formed inside the seat (3). A trigger is provided inside the cavity (4). The trigger is connected to a locking pin (5). A through hole (6) communicating with the cavity (4) is opened on the surface of the seat (3). The locking pin (5) is driven by the trigger to extend and retract in the through hole (6). A radial hole (7) coaxial with the through hole (6) and allowing the locking pin (5) to pass through is opened on the peripheral wall of the outer tube (2). Multiple stop holes (8) are arranged in a straight line along the axial direction. When the locking pin (5) is in the extended state, the locking pin (5) passes through the radial hole (7) and extends into the stop hole (8) to form a positioning, thereby locking the outer tube (2) and the inner tube (1); when the locking pin (5) is in the retracted state, the outer tube (2) and the inner tube (1) unlock each other, so that the outer tube (2) and the inner tube (1) can slide relative to each other axially.

2. The novel telescopic pole according to claim 1, characterized in that, The trigger is connected to a traction rope (9). The traction rope (9) passes through the seat (3) and extends along the axial direction of the inner tube (1) as a force-applying end. By applying force to the force-applying end, the trigger drives the locking pin (5) to perform a telescopic action.

3. A novel telescopic pole according to claim 2, characterized in that, The triggering element includes a first slider (10), a first elastic element (11), a rotating arm (12), and a first guide post (13). A first groove (14) is provided on the inner wall of the cavity (4). The first slider (10) is slidably connected to the first groove (14). The locking pin (5) is connected to the first slider (10) and moves with the first slider (10). The first elastic element (11) is disposed between the first slider (10) and the inner wall of the cavity (4). One end of the rotating arm (12) is rotatably connected to the cavity (4) through a rotating shaft. The other end of the rotating arm (12) is suspended and contacts the first slider (10). The first guide post (13) is located inside the cavity (4) and below the rotating arm (12). One end of the traction rope (9) is connected to the rotating arm (12). The other end of the traction rope (9) passes around the first guide post (13), passes through the seat (3), and extends along the inner tube (1). By pulling the traction rope (9), the rotating arm (12) is driven to rotate. The suspended end of the rotating arm (12) presses down on the first slider (10) by rotating, so that the first slider (10) moves down against the elastic force of the first elastic element (11). At this time, the locking pin (5) retracts, and the outer tube (2) and the inner tube (1) unlock each other.

4. A novel telescopic pole according to claim 2, characterized in that, The triggering element includes a second slider (15), a second elastic element (16), an L-shaped swing arm (17), and a rotating shaft (18). A second groove (19) is provided on the inner wall of the cavity (4). The second slider (15) is slidably connected to the second groove (19). The locking pin (5) is connected to the second slider (15) and moves with the second slider (15). The second elastic element (16) is disposed between the second slider (15) and the inner wall of the cavity (4). One end of the L-shaped swing arm (17) extends to the connection between the locking pin (5) and the second slider (15) and has a notch (20) so that one end of the L-shaped swing arm (17) is locked to the locking pin (5) through the notch (20). The other end of the L-shaped swing arm (17) is connected to the traction rope (9). The L-shaped swing arm (17) is rotatably disposed in the cavity (4) through the rotating shaft (18). By pulling the traction rope (9), one end of the L-shaped swing arm (17) is pulled, causing the L-shaped swing arm (17) to rotate around the rotation axis (18). The other end of the L-shaped swing arm (17) is rotated and presses down on the second slider (15), causing the second slider (15) to move down against the elastic force of the second elastic element (16). At this time, the locking pin (5) retracts, and the outer tube (2) and the inner tube (1) unlock each other.

5. A novel telescopic pole according to claim 2, characterized in that, The triggering element includes a third slider (21), a third elastic element (22), and a positioning post (23). A third groove (24) is provided on the inner wall of the cavity (4). The third slider (21) is slidably connected to the third groove (24). The third slider (21) is provided with an obliquely arranged groove (25). The positioning post (23) is connected to the locking pin (5) and inserted into the groove (25) to form a sliding connection. The third elastic element (22) is located between the third slider (21) and the inner wall of the cavity (4). One end of the traction rope (9) is connected to the third slider. (21) By pulling the traction rope (9), the third slider (21) is pulled. The third slider (21) slides against the elastic force of the third elastic element (22). The groove (25) slides with the third slider (21), thereby driving the positioning pin (23) to move obliquely along the groove (25). The positioning pin (23) drives the locking pin (5) to move. The positioning pin (23) moves from the high point to the low point of the groove (25), so that the locking pin (5) switches from the extended state to the retracted state. At this time, the outer tube (2) and the inner tube (1) are unlocked from each other.

6. A novel telescopic pole according to claim 2, characterized in that, The triggering element includes a fourth slider (26), a fourth elastic element (27), a positioning block (28), and a fifth elastic element (29). The inner wall of the cavity (4) is provided with a fourth sliding groove (30) and a fifth sliding groove (31). The fourth slider (26) is slidably connected to the fourth sliding groove (30). The top surface of the fourth slider (26) forms a first inclined surface (32). The positioning block (28) is slidably connected to the fifth sliding groove (31). The sliding direction of the positioning block (28) is perpendicular to the sliding direction of the fourth slider (26). The locking pin (5) is connected to the positioning block (28). The positioning block (28) has a second inclined surface (33). The second inclined surface (33) and the first inclined surface (32) form an oblique sliding fit. The elastic element (27) is disposed between the fourth slider (26) and the inner wall of the cavity (4), and the fifth elastic element (29) is disposed between the positioning block (28) and the inner wall of the cavity (4). One end of the traction rope (9) is connected to the fourth slider (26). By pulling the traction rope (9), the fourth slider (26) is pulled. The fourth slider (26) slides against the elastic force of the fourth elastic element (27). The fourth slider (26) drives the positioning block (28) to move by sliding obliquely. The positioning block (28) drives the locking pin (5) to move. The positioning block (28) moves from the high point to the low point of the first oblique surface (32), so that the locking pin (5) switches from the extended state to the retracted state. At this time, the outer tube (2) and the inner tube (1) are unlocked from each other.

7. A novel telescopic pole according to claim 2, characterized in that, The triggering element includes a fifth slider (15'), a sixth elastic element (16'), an L-shaped movable piece (17'), and a second guide post (18'). A sixth sliding groove (19') is provided on the inner wall of the cavity (4). The fifth slider (15') is slidably connected to the sixth sliding groove (19'). The locking pin (5) is connected to the fifth slider (15') and moves with it. The sixth elastic element (16') is located between the fifth slider (15') and the inner wall of the cavity (4). The L-shaped... One end of the movable piece (17') extends to the connection between the locking pin (5) and the fifth slider (15') and has a notch (20') so that one end of the L-shaped movable piece (17') is fastened to the locking pin (5) through the notch (20'). The other end of the L-shaped movable piece (17') is connected to the traction rope (9). The second guide post (18') is set in the cavity (4) and located at the bend of the L-shaped movable piece (17'). The L-shaped movable piece (17') can rotate around the second guide post (18'). By pulling the traction rope (9), one end of the L-shaped movable piece (17') is pulled, causing the L-shaped movable piece (17') to rotate around the second guide post (18'). The other end of the L-shaped movable piece (17') is rotated and presses down the fifth slider (15'), causing the fifth slider (15') to overcome the elastic force of the sixth elastic element (16') and move down. At this time, the locking pin (5) retracts, and the outer tube (2) and the inner tube (1) unlock each other.

8. A novel telescopic pole according to claim 1, characterized in that, The seat (3) includes a first end (3-1) and a second end (3-4). The outer diameter of the first end (3-1) is smaller than that of the second end (3-4). The inner tube (1) is sleeved on the first end (3-1), and the outer tube (2) is sleeved on the second end (3-4) and the inner tube (1).

9. A novel telescopic pole according to claim 8, characterized in that, The outer peripheral wall of the first end (3-1) is provided with symmetrically distributed grooves (3-2), and the inner wall of the grooves (3-2) extends out with elastically deformable snap-fit ​​blocks (3-3). The peripheral wall of the inner tube (1) is provided with a slot (34). After the inner tube (1) is sleeved with the first end (3-1), the snap-fit ​​blocks (3-3) snap into the slot (34) to form a limit, so that the first end (3-1) and the inner tube (1) are fixed to each other.

10. A novel telescopic pole according to claim 8, characterized in that, The base (3) is composed of two blocks that are radially halved and spliced ​​together. Each of the two blocks has a cavity inside. The cavities of the two blocks are spliced ​​together to form a cavity (4). The edges of the two blocks have half holes. The half holes of the two blocks are spliced ​​together to form a through hole (6).

Images